From: Marek Vasut Date: Fri, 2 Dec 2011 03:47:40 +0000 (+0000) Subject: i.MX28: Move SPL to arch/arm/cpu/arm926ejs/mx28 X-Git-Tag: v2011.12-rc1~28^2~1 X-Git-Url: https://git.sur5r.net/?a=commitdiff_plain;h=c944a3ef8224a2d5936b31ebd72a6ebd842409d1;p=u-boot i.MX28: Move SPL to arch/arm/cpu/arm926ejs/mx28 This moves SPL to common location so it can be reused by multiple boards. Also, this commit adjusts M28 SoM to avoid breakage due to the move. Signed-off-by: Marek Vasut Cc: Wolfgang Denk Cc: Detlev Zundel Cc: Stefano Babic --- diff --git a/arch/arm/cpu/arm926ejs/mx28/Makefile b/arch/arm/cpu/arm926ejs/mx28/Makefile index 7845310cfe..372de8a5e4 100644 --- a/arch/arm/cpu/arm926ejs/mx28/Makefile +++ b/arch/arm/cpu/arm926ejs/mx28/Makefile @@ -27,6 +27,10 @@ LIB = $(obj)lib$(SOC).o COBJS = clock.o mx28.o iomux.o timer.o +ifdef CONFIG_SPL_BUILD +COBJS += memsize.o spl_boot.o spl_mem_init.o spl_power_init.o +endif + SRCS := $(START:.o=.S) $(COBJS:.o=.c) OBJS := $(addprefix $(obj),$(COBJS)) START := $(addprefix $(obj),$(START)) @@ -36,6 +40,11 @@ all: $(obj).depend $(LIB) $(LIB): $(OBJS) $(call cmd_link_o_target, $(OBJS)) +ifdef CONFIG_SPL_BUILD +memsize.c: + ln -sf $(TOPDIR)/common/memsize.c $@ +endif + ######################################################################### # defines $(obj).depend target diff --git a/arch/arm/cpu/arm926ejs/mx28/mx28_init.h b/arch/arm/cpu/arm926ejs/mx28/mx28_init.h new file mode 100644 index 0000000000..98d363199d --- /dev/null +++ b/arch/arm/cpu/arm926ejs/mx28/mx28_init.h @@ -0,0 +1,41 @@ +/* + * Freescale i.MX28 SPL functions + * + * Copyright (C) 2011 Marek Vasut + * on behalf of DENX Software Engineering GmbH + * + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + +#ifndef __M28_INIT_H__ +#define __M28_INIT_H__ + +void early_delay(int delay); + +void mx28_power_init(void); + +#ifdef CONFIG_SPL_MX28_PSWITCH_WAIT +void mx28_power_wait_pswitch(void); +#else +static inline void mx28_power_wait_pswitch(void) { } +#endif + +void mx28_mem_init(void); + +#endif /* __M28_INIT_H__ */ diff --git a/arch/arm/cpu/arm926ejs/mx28/spl_boot.c b/arch/arm/cpu/arm926ejs/mx28/spl_boot.c new file mode 100644 index 0000000000..3cd4c249ab --- /dev/null +++ b/arch/arm/cpu/arm926ejs/mx28/spl_boot.c @@ -0,0 +1,87 @@ +/* + * Freescale i.MX28 Boot setup + * + * Copyright (C) 2011 Marek Vasut + * on behalf of DENX Software Engineering GmbH + * + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + +#include +#include +#include +#include +#include + +#include "mx28_init.h" + +/* + * This delay function is intended to be used only in early stage of boot, where + * clock are not set up yet. The timer used here is reset on every boot and + * takes a few seconds to roll. The boot doesn't take that long, so to keep the + * code simple, it doesn't take rolling into consideration. + */ +#define HW_DIGCTRL_MICROSECONDS 0x8001c0c0 +void early_delay(int delay) +{ + uint32_t st = readl(HW_DIGCTRL_MICROSECONDS); + st += delay; + while (st > readl(HW_DIGCTRL_MICROSECONDS)) + ; +} + +void mx28_common_spl_init(const iomux_cfg_t *iomux_setup, + const unsigned int iomux_size) +{ + mxs_iomux_setup_multiple_pads(iomux_setup, iomux_size); + mx28_power_init(); + mx28_mem_init(); + mx28_power_wait_pswitch(); +} + +/* Support aparatus */ +inline void board_init_f(unsigned long bootflag) +{ + for (;;) + ; +} + +inline void board_init_r(gd_t *id, ulong dest_addr) +{ + for (;;) + ; +} + +inline int printf(const char *fmt, ...) +{ + return 0; +} + +inline void __coloured_LED_init(void) {} +inline void __red_LED_on(void) {} +void coloured_LED_init(void) + __attribute__((weak, alias("__coloured_LED_init"))); +void red_LED_on(void) + __attribute__((weak, alias("__red_LED_on"))); +void hang(void) __attribute__ ((noreturn)); +void hang(void) +{ + for (;;) + ; +} diff --git a/arch/arm/cpu/arm926ejs/mx28/spl_mem_init.c b/arch/arm/cpu/arm926ejs/mx28/spl_mem_init.c new file mode 100644 index 0000000000..00493b8bf9 --- /dev/null +++ b/arch/arm/cpu/arm926ejs/mx28/spl_mem_init.c @@ -0,0 +1,240 @@ +/* + * Freescale i.MX28 RAM init + * + * Copyright (C) 2011 Marek Vasut + * on behalf of DENX Software Engineering GmbH + * + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + +#include +#include +#include +#include +#include + +#include "mx28_init.h" + +uint32_t dram_vals[] = { + 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, + 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, + 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, + 0x00000000, 0x00000000, 0x00000100, 0x00000000, 0x00000000, + 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, + 0x00000000, 0x00010101, 0x01010101, 0x000f0f01, 0x0f02020a, + 0x00000000, 0x00010101, 0x00000100, 0x00000100, 0x00000000, + 0x00000002, 0x01010000, 0x05060302, 0x06005003, 0x0a0000c8, + 0x02009c40, 0x0000030c, 0x0036a609, 0x031a0612, 0x02030202, + 0x00c8001c, 0x00000000, 0x00000000, 0x00012100, 0xffff0303, + 0x00012100, 0xffff0303, 0x00012100, 0xffff0303, 0x00012100, + 0xffff0303, 0x00000003, 0x00000000, 0x00000000, 0x00000000, + 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, + 0x00000000, 0x00000612, 0x01000F02, 0x06120612, 0x00000200, + 0x00020007, 0xf5014b27, 0xf5014b27, 0xf5014b27, 0xf5014b27, + 0x07000300, 0x07000300, 0x07000300, 0x07000300, 0x00000006, + 0x00000000, 0x00000000, 0x01000000, 0x01020408, 0x08040201, + 0x000f1133, 0x00000000, 0x00001f04, 0x00001f04, 0x00001f04, + 0x00001f04, 0x00001f04, 0x00001f04, 0x00001f04, 0x00001f04, + 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, + 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, + 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, + 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, + 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, + 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, + 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, + 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, + 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, + 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, + 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, + 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, + 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, + 0x00000000, 0x00000000, 0x00010000, 0x00020304, 0x00000004, + 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, + 0x00000000, 0x01010000, 0x01000000, 0x03030000, 0x00010303, + 0x01020202, 0x00000000, 0x02040303, 0x21002103, 0x00061200, + 0x06120612, 0x04320432, 0x04320432, 0x00040004, 0x00040004, + 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00010001 +}; + +void init_m28_200mhz_ddr2(void) +{ + int i; + + for (i = 0; i < ARRAY_SIZE(dram_vals); i++) + writel(dram_vals[i], MXS_DRAM_BASE + (4 * i)); +} + +void mx28_mem_init_clock(void) +{ + struct mx28_clkctrl_regs *clkctrl_regs = + (struct mx28_clkctrl_regs *)MXS_CLKCTRL_BASE; + + /* Gate EMI clock */ + writel(CLKCTRL_FRAC0_CLKGATEEMI, + &clkctrl_regs->hw_clkctrl_frac0_set); + + /* EMI = 205MHz */ + writel(CLKCTRL_FRAC0_EMIFRAC_MASK, + &clkctrl_regs->hw_clkctrl_frac0_set); + writel((0x2a << CLKCTRL_FRAC0_EMIFRAC_OFFSET) & + CLKCTRL_FRAC0_EMIFRAC_MASK, + &clkctrl_regs->hw_clkctrl_frac0_clr); + + /* Ungate EMI clock */ + writel(CLKCTRL_FRAC0_CLKGATEEMI, + &clkctrl_regs->hw_clkctrl_frac0_clr); + + early_delay(11000); + + writel((2 << CLKCTRL_EMI_DIV_EMI_OFFSET) | + (1 << CLKCTRL_EMI_DIV_XTAL_OFFSET), + &clkctrl_regs->hw_clkctrl_emi); + + /* Unbypass EMI */ + writel(CLKCTRL_CLKSEQ_BYPASS_EMI, + &clkctrl_regs->hw_clkctrl_clkseq_clr); + + early_delay(10000); +} + +void mx28_mem_setup_cpu_and_hbus(void) +{ + struct mx28_clkctrl_regs *clkctrl_regs = + (struct mx28_clkctrl_regs *)MXS_CLKCTRL_BASE; + + /* CPU = 454MHz and ungate CPU clock */ + clrsetbits_le32(&clkctrl_regs->hw_clkctrl_frac0, + CLKCTRL_FRAC0_CPUFRAC_MASK | CLKCTRL_FRAC0_CLKGATECPU, + 19 << CLKCTRL_FRAC0_CPUFRAC_OFFSET); + + /* Set CPU bypass */ + writel(CLKCTRL_CLKSEQ_BYPASS_CPU, + &clkctrl_regs->hw_clkctrl_clkseq_set); + + /* HBUS = 151MHz */ + writel(CLKCTRL_HBUS_DIV_MASK, &clkctrl_regs->hw_clkctrl_hbus_set); + writel(((~3) << CLKCTRL_HBUS_DIV_OFFSET) & CLKCTRL_HBUS_DIV_MASK, + &clkctrl_regs->hw_clkctrl_hbus_clr); + + early_delay(10000); + + /* CPU clock divider = 1 */ + clrsetbits_le32(&clkctrl_regs->hw_clkctrl_cpu, + CLKCTRL_CPU_DIV_CPU_MASK, 1); + + /* Disable CPU bypass */ + writel(CLKCTRL_CLKSEQ_BYPASS_CPU, + &clkctrl_regs->hw_clkctrl_clkseq_clr); +} + +void mx28_mem_setup_vdda(void) +{ + struct mx28_power_regs *power_regs = + (struct mx28_power_regs *)MXS_POWER_BASE; + + writel((0xc << POWER_VDDACTRL_TRG_OFFSET) | + (0x7 << POWER_VDDACTRL_BO_OFFSET_OFFSET) | + POWER_VDDACTRL_LINREG_OFFSET_1STEPS_BELOW, + &power_regs->hw_power_vddactrl); +} + +void mx28_mem_setup_vddd(void) +{ + struct mx28_power_regs *power_regs = + (struct mx28_power_regs *)MXS_POWER_BASE; + + writel((0x1c << POWER_VDDDCTRL_TRG_OFFSET) | + (0x7 << POWER_VDDDCTRL_BO_OFFSET_OFFSET) | + POWER_VDDDCTRL_LINREG_OFFSET_1STEPS_BELOW, + &power_regs->hw_power_vdddctrl); +} + +#define HW_DIGCTRL_SCRATCH0 0x8001c280 +#define HW_DIGCTRL_SCRATCH1 0x8001c290 +void data_abort_memdetect_handler(void) __attribute__((naked)); +void data_abort_memdetect_handler(void) +{ + asm volatile("subs pc, r14, #4"); +} + +void mx28_mem_get_size(void) +{ + uint32_t sz, da; + uint32_t *vt = (uint32_t *)0x20; + + /* Replace the DABT handler. */ + da = vt[4]; + vt[4] = (uint32_t)&data_abort_memdetect_handler; + + sz = get_ram_size((long *)PHYS_SDRAM_1, PHYS_SDRAM_1_SIZE); + writel(sz, HW_DIGCTRL_SCRATCH0); + writel(sz, HW_DIGCTRL_SCRATCH1); + + /* Restore the old DABT handler. */ + vt[4] = da; +} + +void mx28_mem_init(void) +{ + struct mx28_clkctrl_regs *clkctrl_regs = + (struct mx28_clkctrl_regs *)MXS_CLKCTRL_BASE; + struct mx28_pinctrl_regs *pinctrl_regs = + (struct mx28_pinctrl_regs *)MXS_PINCTRL_BASE; + + /* Set DDR2 mode */ + writel(PINCTRL_EMI_DS_CTRL_DDR_MODE_DDR2, + &pinctrl_regs->hw_pinctrl_emi_ds_ctrl_set); + + /* Power up PLL0 */ + writel(CLKCTRL_PLL0CTRL0_POWER, + &clkctrl_regs->hw_clkctrl_pll0ctrl0_set); + + early_delay(11000); + + mx28_mem_init_clock(); + + mx28_mem_setup_vdda(); + + /* + * Configure the DRAM registers + */ + + /* Clear START bit from DRAM_CTL16 */ + clrbits_le32(MXS_DRAM_BASE + 0x40, 1); + + init_m28_200mhz_ddr2(); + + /* Clear SREFRESH bit from DRAM_CTL17 */ + clrbits_le32(MXS_DRAM_BASE + 0x44, 1); + + /* Set START bit in DRAM_CTL16 */ + setbits_le32(MXS_DRAM_BASE + 0x40, 1); + + /* Wait for bit 20 (DRAM init complete) in DRAM_CTL58 */ + while (!(readl(MXS_DRAM_BASE + 0xe8) & (1 << 20))) + ; + + mx28_mem_setup_vddd(); + + early_delay(10000); + + mx28_mem_setup_cpu_and_hbus(); + + mx28_mem_get_size(); +} diff --git a/arch/arm/cpu/arm926ejs/mx28/spl_power_init.c b/arch/arm/cpu/arm926ejs/mx28/spl_power_init.c new file mode 100644 index 0000000000..a4dc2a31b7 --- /dev/null +++ b/arch/arm/cpu/arm926ejs/mx28/spl_power_init.c @@ -0,0 +1,913 @@ +/* + * Freescale i.MX28 Boot PMIC init + * + * Copyright (C) 2011 Marek Vasut + * on behalf of DENX Software Engineering GmbH + * + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + +#include +#include +#include +#include + +#include "mx28_init.h" + +void mx28_power_clock2xtal(void) +{ + struct mx28_clkctrl_regs *clkctrl_regs = + (struct mx28_clkctrl_regs *)MXS_CLKCTRL_BASE; + + /* Set XTAL as CPU reference clock */ + writel(CLKCTRL_CLKSEQ_BYPASS_CPU, + &clkctrl_regs->hw_clkctrl_clkseq_set); +} + +void mx28_power_clock2pll(void) +{ + struct mx28_clkctrl_regs *clkctrl_regs = + (struct mx28_clkctrl_regs *)MXS_CLKCTRL_BASE; + + writel(CLKCTRL_PLL0CTRL0_POWER, + &clkctrl_regs->hw_clkctrl_pll0ctrl0_set); + early_delay(100); + writel(CLKCTRL_CLKSEQ_BYPASS_CPU, + &clkctrl_regs->hw_clkctrl_clkseq_clr); +} + +void mx28_power_clear_auto_restart(void) +{ + struct mx28_rtc_regs *rtc_regs = + (struct mx28_rtc_regs *)MXS_RTC_BASE; + + writel(RTC_CTRL_SFTRST, &rtc_regs->hw_rtc_ctrl_clr); + while (readl(&rtc_regs->hw_rtc_ctrl) & RTC_CTRL_SFTRST) + ; + + writel(RTC_CTRL_CLKGATE, &rtc_regs->hw_rtc_ctrl_clr); + while (readl(&rtc_regs->hw_rtc_ctrl) & RTC_CTRL_CLKGATE) + ; + + /* + * Due to the hardware design bug of mx28 EVK-A + * we need to set the AUTO_RESTART bit. + */ + if (readl(&rtc_regs->hw_rtc_persistent0) & RTC_PERSISTENT0_AUTO_RESTART) + return; + + while (readl(&rtc_regs->hw_rtc_stat) & RTC_STAT_NEW_REGS_MASK) + ; + + setbits_le32(&rtc_regs->hw_rtc_persistent0, + RTC_PERSISTENT0_AUTO_RESTART); + writel(RTC_CTRL_FORCE_UPDATE, &rtc_regs->hw_rtc_ctrl_set); + writel(RTC_CTRL_FORCE_UPDATE, &rtc_regs->hw_rtc_ctrl_clr); + while (readl(&rtc_regs->hw_rtc_stat) & RTC_STAT_NEW_REGS_MASK) + ; + while (readl(&rtc_regs->hw_rtc_stat) & RTC_STAT_STALE_REGS_MASK) + ; +} + +void mx28_power_set_linreg(void) +{ + struct mx28_power_regs *power_regs = + (struct mx28_power_regs *)MXS_POWER_BASE; + + /* Set linear regulator 25mV below switching converter */ + clrsetbits_le32(&power_regs->hw_power_vdddctrl, + POWER_VDDDCTRL_LINREG_OFFSET_MASK, + POWER_VDDDCTRL_LINREG_OFFSET_1STEPS_BELOW); + + clrsetbits_le32(&power_regs->hw_power_vddactrl, + POWER_VDDACTRL_LINREG_OFFSET_MASK, + POWER_VDDACTRL_LINREG_OFFSET_1STEPS_BELOW); + + clrsetbits_le32(&power_regs->hw_power_vddioctrl, + POWER_VDDIOCTRL_LINREG_OFFSET_MASK, + POWER_VDDIOCTRL_LINREG_OFFSET_1STEPS_BELOW); +} + +void mx28_power_setup_5v_detect(void) +{ + struct mx28_power_regs *power_regs = + (struct mx28_power_regs *)MXS_POWER_BASE; + + /* Start 5V detection */ + clrsetbits_le32(&power_regs->hw_power_5vctrl, + POWER_5VCTRL_VBUSVALID_TRSH_MASK, + POWER_5VCTRL_VBUSVALID_TRSH_4V4 | + POWER_5VCTRL_PWRUP_VBUS_CMPS); +} + +void mx28_src_power_init(void) +{ + struct mx28_power_regs *power_regs = + (struct mx28_power_regs *)MXS_POWER_BASE; + + /* Improve efficieny and reduce transient ripple */ + writel(POWER_LOOPCTRL_TOGGLE_DIF | POWER_LOOPCTRL_EN_CM_HYST | + POWER_LOOPCTRL_EN_DF_HYST, &power_regs->hw_power_loopctrl_set); + + clrsetbits_le32(&power_regs->hw_power_dclimits, + POWER_DCLIMITS_POSLIMIT_BUCK_MASK, + 0x30 << POWER_DCLIMITS_POSLIMIT_BUCK_OFFSET); + + setbits_le32(&power_regs->hw_power_battmonitor, + POWER_BATTMONITOR_EN_BATADJ); + + /* Increase the RCSCALE level for quick DCDC response to dynamic load */ + clrsetbits_le32(&power_regs->hw_power_loopctrl, + POWER_LOOPCTRL_EN_RCSCALE_MASK, + POWER_LOOPCTRL_RCSCALE_THRESH | + POWER_LOOPCTRL_EN_RCSCALE_8X); + + clrsetbits_le32(&power_regs->hw_power_minpwr, + POWER_MINPWR_HALFFETS, POWER_MINPWR_DOUBLE_FETS); + + /* 5V to battery handoff ... FIXME */ + setbits_le32(&power_regs->hw_power_5vctrl, POWER_5VCTRL_DCDC_XFER); + early_delay(30); + clrbits_le32(&power_regs->hw_power_5vctrl, POWER_5VCTRL_DCDC_XFER); +} + +void mx28_power_init_4p2_params(void) +{ + struct mx28_power_regs *power_regs = + (struct mx28_power_regs *)MXS_POWER_BASE; + + /* Setup 4P2 parameters */ + clrsetbits_le32(&power_regs->hw_power_dcdc4p2, + POWER_DCDC4P2_CMPTRIP_MASK | POWER_DCDC4P2_TRG_MASK, + POWER_DCDC4P2_TRG_4V2 | (31 << POWER_DCDC4P2_CMPTRIP_OFFSET)); + + clrsetbits_le32(&power_regs->hw_power_5vctrl, + POWER_5VCTRL_HEADROOM_ADJ_MASK, + 0x4 << POWER_5VCTRL_HEADROOM_ADJ_OFFSET); + + clrsetbits_le32(&power_regs->hw_power_dcdc4p2, + POWER_DCDC4P2_DROPOUT_CTRL_MASK, + POWER_DCDC4P2_DROPOUT_CTRL_100MV | + POWER_DCDC4P2_DROPOUT_CTRL_SRC_SEL); + + clrsetbits_le32(&power_regs->hw_power_5vctrl, + POWER_5VCTRL_CHARGE_4P2_ILIMIT_MASK, + 0x3f << POWER_5VCTRL_CHARGE_4P2_ILIMIT_OFFSET); +} + +void mx28_enable_4p2_dcdc_input(int xfer) +{ + struct mx28_power_regs *power_regs = + (struct mx28_power_regs *)MXS_POWER_BASE; + uint32_t tmp, vbus_thresh, vbus_5vdetect, pwd_bo; + uint32_t prev_5v_brnout, prev_5v_droop; + + prev_5v_brnout = readl(&power_regs->hw_power_5vctrl) & + POWER_5VCTRL_PWDN_5VBRNOUT; + prev_5v_droop = readl(&power_regs->hw_power_ctrl) & + POWER_CTRL_ENIRQ_VDD5V_DROOP; + + clrbits_le32(&power_regs->hw_power_5vctrl, POWER_5VCTRL_PWDN_5VBRNOUT); + writel(POWER_RESET_UNLOCK_KEY | POWER_RESET_PWD_OFF, + &power_regs->hw_power_reset); + + clrbits_le32(&power_regs->hw_power_ctrl, POWER_CTRL_ENIRQ_VDD5V_DROOP); + + if (xfer && (readl(&power_regs->hw_power_5vctrl) & + POWER_5VCTRL_ENABLE_DCDC)) { + return; + } + + /* + * Recording orignal values that will be modified temporarlily + * to handle a chip bug. See chip errata for CQ ENGR00115837 + */ + tmp = readl(&power_regs->hw_power_5vctrl); + vbus_thresh = tmp & POWER_5VCTRL_VBUSVALID_TRSH_MASK; + vbus_5vdetect = tmp & POWER_5VCTRL_VBUSVALID_5VDETECT; + + pwd_bo = readl(&power_regs->hw_power_minpwr) & POWER_MINPWR_PWD_BO; + + /* + * Disable mechanisms that get erroneously tripped by when setting + * the DCDC4P2 EN_DCDC + */ + clrbits_le32(&power_regs->hw_power_5vctrl, + POWER_5VCTRL_VBUSVALID_5VDETECT | + POWER_5VCTRL_VBUSVALID_TRSH_MASK); + + writel(POWER_MINPWR_PWD_BO, &power_regs->hw_power_minpwr_set); + + if (xfer) { + setbits_le32(&power_regs->hw_power_5vctrl, + POWER_5VCTRL_DCDC_XFER); + early_delay(20); + clrbits_le32(&power_regs->hw_power_5vctrl, + POWER_5VCTRL_DCDC_XFER); + + setbits_le32(&power_regs->hw_power_5vctrl, + POWER_5VCTRL_ENABLE_DCDC); + } else { + setbits_le32(&power_regs->hw_power_dcdc4p2, + POWER_DCDC4P2_ENABLE_DCDC); + } + + early_delay(25); + + clrsetbits_le32(&power_regs->hw_power_5vctrl, + POWER_5VCTRL_VBUSVALID_TRSH_MASK, vbus_thresh); + + if (vbus_5vdetect) + writel(vbus_5vdetect, &power_regs->hw_power_5vctrl_set); + + if (!pwd_bo) + clrbits_le32(&power_regs->hw_power_minpwr, POWER_MINPWR_PWD_BO); + + while (readl(&power_regs->hw_power_ctrl) & POWER_CTRL_VBUS_VALID_IRQ) + clrbits_le32(&power_regs->hw_power_ctrl, + POWER_CTRL_VBUS_VALID_IRQ); + + if (prev_5v_brnout) { + writel(POWER_5VCTRL_PWDN_5VBRNOUT, + &power_regs->hw_power_5vctrl_set); + writel(POWER_RESET_UNLOCK_KEY, + &power_regs->hw_power_reset); + } else { + writel(POWER_5VCTRL_PWDN_5VBRNOUT, + &power_regs->hw_power_5vctrl_clr); + writel(POWER_RESET_UNLOCK_KEY | POWER_RESET_PWD_OFF, + &power_regs->hw_power_reset); + } + + while (readl(&power_regs->hw_power_ctrl) & POWER_CTRL_VDD5V_DROOP_IRQ) + clrbits_le32(&power_regs->hw_power_ctrl, + POWER_CTRL_VDD5V_DROOP_IRQ); + + if (prev_5v_droop) + clrbits_le32(&power_regs->hw_power_ctrl, + POWER_CTRL_ENIRQ_VDD5V_DROOP); + else + setbits_le32(&power_regs->hw_power_ctrl, + POWER_CTRL_ENIRQ_VDD5V_DROOP); +} + +void mx28_power_init_4p2_regulator(void) +{ + struct mx28_power_regs *power_regs = + (struct mx28_power_regs *)MXS_POWER_BASE; + uint32_t tmp, tmp2; + + setbits_le32(&power_regs->hw_power_dcdc4p2, POWER_DCDC4P2_ENABLE_4P2); + + writel(POWER_CHARGE_ENABLE_LOAD, &power_regs->hw_power_charge_set); + + writel(POWER_5VCTRL_CHARGE_4P2_ILIMIT_MASK, + &power_regs->hw_power_5vctrl_clr); + clrbits_le32(&power_regs->hw_power_dcdc4p2, POWER_DCDC4P2_TRG_MASK); + + /* Power up the 4p2 rail and logic/control */ + writel(POWER_5VCTRL_PWD_CHARGE_4P2_MASK, + &power_regs->hw_power_5vctrl_clr); + + /* + * Start charging up the 4p2 capacitor. We ramp of this charge + * gradually to avoid large inrush current from the 5V cable which can + * cause transients/problems + */ + mx28_enable_4p2_dcdc_input(0); + + if (readl(&power_regs->hw_power_ctrl) & POWER_CTRL_VBUS_VALID_IRQ) { + /* + * If we arrived here, we were unable to recover from mx23 chip + * errata 5837. 4P2 is disabled and sufficient battery power is + * not present. Exiting to not enable DCDC power during 5V + * connected state. + */ + clrbits_le32(&power_regs->hw_power_dcdc4p2, + POWER_DCDC4P2_ENABLE_DCDC); + writel(POWER_5VCTRL_PWD_CHARGE_4P2_MASK, + &power_regs->hw_power_5vctrl_set); + hang(); + } + + /* + * Here we set the 4p2 brownout level to something very close to 4.2V. + * We then check the brownout status. If the brownout status is false, + * the voltage is already close to the target voltage of 4.2V so we + * can go ahead and set the 4P2 current limit to our max target limit. + * If the brownout status is true, we need to ramp us the current limit + * so that we don't cause large inrush current issues. We step up the + * current limit until the brownout status is false or until we've + * reached our maximum defined 4p2 current limit. + */ + clrsetbits_le32(&power_regs->hw_power_dcdc4p2, + POWER_DCDC4P2_BO_MASK, + 22 << POWER_DCDC4P2_BO_OFFSET); /* 4.15V */ + + if (!(readl(&power_regs->hw_power_sts) & POWER_STS_DCDC_4P2_BO)) { + setbits_le32(&power_regs->hw_power_5vctrl, + 0x3f << POWER_5VCTRL_CHARGE_4P2_ILIMIT_OFFSET); + } else { + tmp = (readl(&power_regs->hw_power_5vctrl) & + POWER_5VCTRL_CHARGE_4P2_ILIMIT_MASK) >> + POWER_5VCTRL_CHARGE_4P2_ILIMIT_OFFSET; + while (tmp < 0x3f) { + if (!(readl(&power_regs->hw_power_sts) & + POWER_STS_DCDC_4P2_BO)) { + tmp = readl(&power_regs->hw_power_5vctrl); + tmp |= POWER_5VCTRL_CHARGE_4P2_ILIMIT_MASK; + early_delay(100); + writel(tmp, &power_regs->hw_power_5vctrl); + break; + } else { + tmp++; + tmp2 = readl(&power_regs->hw_power_5vctrl); + tmp2 &= ~POWER_5VCTRL_CHARGE_4P2_ILIMIT_MASK; + tmp2 |= tmp << + POWER_5VCTRL_CHARGE_4P2_ILIMIT_OFFSET; + writel(tmp2, &power_regs->hw_power_5vctrl); + early_delay(100); + } + } + } + + clrbits_le32(&power_regs->hw_power_dcdc4p2, POWER_DCDC4P2_BO_MASK); + writel(POWER_CTRL_DCDC4P2_BO_IRQ, &power_regs->hw_power_ctrl_clr); +} + +void mx28_power_init_dcdc_4p2_source(void) +{ + struct mx28_power_regs *power_regs = + (struct mx28_power_regs *)MXS_POWER_BASE; + + if (!(readl(&power_regs->hw_power_dcdc4p2) & + POWER_DCDC4P2_ENABLE_DCDC)) { + hang(); + } + + mx28_enable_4p2_dcdc_input(1); + + if (readl(&power_regs->hw_power_ctrl) & POWER_CTRL_VBUS_VALID_IRQ) { + clrbits_le32(&power_regs->hw_power_dcdc4p2, + POWER_DCDC4P2_ENABLE_DCDC); + writel(POWER_5VCTRL_ENABLE_DCDC, + &power_regs->hw_power_5vctrl_clr); + writel(POWER_5VCTRL_PWD_CHARGE_4P2_MASK, + &power_regs->hw_power_5vctrl_set); + } +} + +void mx28_power_enable_4p2(void) +{ + struct mx28_power_regs *power_regs = + (struct mx28_power_regs *)MXS_POWER_BASE; + uint32_t vdddctrl, vddactrl, vddioctrl; + uint32_t tmp; + + vdddctrl = readl(&power_regs->hw_power_vdddctrl); + vddactrl = readl(&power_regs->hw_power_vddactrl); + vddioctrl = readl(&power_regs->hw_power_vddioctrl); + + setbits_le32(&power_regs->hw_power_vdddctrl, + POWER_VDDDCTRL_DISABLE_FET | POWER_VDDDCTRL_ENABLE_LINREG | + POWER_VDDDCTRL_PWDN_BRNOUT); + + setbits_le32(&power_regs->hw_power_vddactrl, + POWER_VDDACTRL_DISABLE_FET | POWER_VDDACTRL_ENABLE_LINREG | + POWER_VDDACTRL_PWDN_BRNOUT); + + setbits_le32(&power_regs->hw_power_vddioctrl, + POWER_VDDIOCTRL_DISABLE_FET | POWER_VDDIOCTRL_PWDN_BRNOUT); + + mx28_power_init_4p2_params(); + mx28_power_init_4p2_regulator(); + + /* Shutdown battery (none present) */ + clrbits_le32(&power_regs->hw_power_dcdc4p2, POWER_DCDC4P2_BO_MASK); + writel(POWER_CTRL_DCDC4P2_BO_IRQ, &power_regs->hw_power_ctrl_clr); + writel(POWER_CTRL_ENIRQ_DCDC4P2_BO, &power_regs->hw_power_ctrl_clr); + + mx28_power_init_dcdc_4p2_source(); + + writel(vdddctrl, &power_regs->hw_power_vdddctrl); + early_delay(20); + writel(vddactrl, &power_regs->hw_power_vddactrl); + early_delay(20); + writel(vddioctrl, &power_regs->hw_power_vddioctrl); + + /* + * Check if FET is enabled on either powerout and if so, + * disable load. + */ + tmp = 0; + tmp |= !(readl(&power_regs->hw_power_vdddctrl) & + POWER_VDDDCTRL_DISABLE_FET); + tmp |= !(readl(&power_regs->hw_power_vddactrl) & + POWER_VDDACTRL_DISABLE_FET); + tmp |= !(readl(&power_regs->hw_power_vddioctrl) & + POWER_VDDIOCTRL_DISABLE_FET); + if (tmp) + writel(POWER_CHARGE_ENABLE_LOAD, + &power_regs->hw_power_charge_clr); +} + +void mx28_boot_valid_5v(void) +{ + struct mx28_power_regs *power_regs = + (struct mx28_power_regs *)MXS_POWER_BASE; + + /* + * Use VBUSVALID level instead of VDD5V_GT_VDDIO level to trigger a 5V + * disconnect event. FIXME + */ + writel(POWER_5VCTRL_VBUSVALID_5VDETECT, + &power_regs->hw_power_5vctrl_set); + + /* Configure polarity to check for 5V disconnection. */ + writel(POWER_CTRL_POLARITY_VBUSVALID | + POWER_CTRL_POLARITY_VDD5V_GT_VDDIO, + &power_regs->hw_power_ctrl_clr); + + writel(POWER_CTRL_VBUS_VALID_IRQ | POWER_CTRL_VDD5V_GT_VDDIO_IRQ, + &power_regs->hw_power_ctrl_clr); + + mx28_power_enable_4p2(); +} + +void mx28_powerdown(void) +{ + struct mx28_power_regs *power_regs = + (struct mx28_power_regs *)MXS_POWER_BASE; + writel(POWER_RESET_UNLOCK_KEY, &power_regs->hw_power_reset); + writel(POWER_RESET_UNLOCK_KEY | POWER_RESET_PWD_OFF, + &power_regs->hw_power_reset); +} + +void mx28_handle_5v_conflict(void) +{ + struct mx28_power_regs *power_regs = + (struct mx28_power_regs *)MXS_POWER_BASE; + uint32_t tmp; + + setbits_le32(&power_regs->hw_power_vddioctrl, + POWER_VDDIOCTRL_BO_OFFSET_MASK); + + for (;;) { + tmp = readl(&power_regs->hw_power_sts); + + if (tmp & POWER_STS_VDDIO_BO) { + mx28_powerdown(); + break; + } + + if (tmp & POWER_STS_VDD5V_GT_VDDIO) { + mx28_boot_valid_5v(); + break; + } else { + mx28_powerdown(); + break; + } + } +} + +int mx28_get_batt_volt(void) +{ + struct mx28_power_regs *power_regs = + (struct mx28_power_regs *)MXS_POWER_BASE; + uint32_t volt = readl(&power_regs->hw_power_battmonitor); + volt &= POWER_BATTMONITOR_BATT_VAL_MASK; + volt >>= POWER_BATTMONITOR_BATT_VAL_OFFSET; + volt *= 8; + return volt; +} + +int mx28_is_batt_ready(void) +{ + return (mx28_get_batt_volt() >= 3600); +} + +void mx28_5v_boot(void) +{ + struct mx28_power_regs *power_regs = + (struct mx28_power_regs *)MXS_POWER_BASE; + + /* + * NOTE: In original IMX-Bootlets, this also checks for VBUSVALID, + * but their implementation always returns 1 so we omit it here. + */ + if (readl(&power_regs->hw_power_sts) & POWER_STS_VDD5V_GT_VDDIO) { + mx28_boot_valid_5v(); + return; + } + + early_delay(1000); + if (readl(&power_regs->hw_power_sts) & POWER_STS_VDD5V_GT_VDDIO) { + mx28_boot_valid_5v(); + return; + } + + mx28_handle_5v_conflict(); +} + +void mx28_init_batt_bo(void) +{ + struct mx28_power_regs *power_regs = + (struct mx28_power_regs *)MXS_POWER_BASE; + + /* Brownout at 3V */ + clrsetbits_le32(&power_regs->hw_power_battmonitor, + POWER_BATTMONITOR_BRWNOUT_LVL_MASK, + 15 << POWER_BATTMONITOR_BRWNOUT_LVL_OFFSET); + + writel(POWER_CTRL_BATT_BO_IRQ, &power_regs->hw_power_ctrl_clr); + writel(POWER_CTRL_ENIRQ_BATT_BO, &power_regs->hw_power_ctrl_clr); +} + +void mx28_switch_vddd_to_dcdc_source(void) +{ + struct mx28_power_regs *power_regs = + (struct mx28_power_regs *)MXS_POWER_BASE; + + clrsetbits_le32(&power_regs->hw_power_vdddctrl, + POWER_VDDDCTRL_LINREG_OFFSET_MASK, + POWER_VDDDCTRL_LINREG_OFFSET_1STEPS_BELOW); + + clrbits_le32(&power_regs->hw_power_vdddctrl, + POWER_VDDDCTRL_DISABLE_FET | POWER_VDDDCTRL_ENABLE_LINREG | + POWER_VDDDCTRL_DISABLE_STEPPING); +} + +int mx28_is_batt_good(void) +{ + struct mx28_power_regs *power_regs = + (struct mx28_power_regs *)MXS_POWER_BASE; + uint32_t volt; + + volt = readl(&power_regs->hw_power_battmonitor); + volt &= POWER_BATTMONITOR_BATT_VAL_MASK; + volt >>= POWER_BATTMONITOR_BATT_VAL_OFFSET; + volt *= 8; + + if ((volt >= 2400) && (volt <= 4300)) + return 1; + + clrsetbits_le32(&power_regs->hw_power_5vctrl, + POWER_5VCTRL_CHARGE_4P2_ILIMIT_MASK, + 0x3 << POWER_5VCTRL_CHARGE_4P2_ILIMIT_OFFSET); + writel(POWER_5VCTRL_PWD_CHARGE_4P2_MASK, + &power_regs->hw_power_5vctrl_clr); + + clrsetbits_le32(&power_regs->hw_power_charge, + POWER_CHARGE_STOP_ILIMIT_MASK | POWER_CHARGE_BATTCHRG_I_MASK, + POWER_CHARGE_STOP_ILIMIT_10MA | 0x3); + + writel(POWER_CHARGE_PWD_BATTCHRG, &power_regs->hw_power_charge_clr); + writel(POWER_5VCTRL_PWD_CHARGE_4P2_MASK, + &power_regs->hw_power_5vctrl_clr); + + early_delay(500000); + + volt = readl(&power_regs->hw_power_battmonitor); + volt &= POWER_BATTMONITOR_BATT_VAL_MASK; + volt >>= POWER_BATTMONITOR_BATT_VAL_OFFSET; + volt *= 8; + + if (volt >= 3500) + return 0; + + if (volt >= 2400) + return 1; + + writel(POWER_CHARGE_STOP_ILIMIT_MASK | POWER_CHARGE_BATTCHRG_I_MASK, + &power_regs->hw_power_charge_clr); + writel(POWER_CHARGE_PWD_BATTCHRG, &power_regs->hw_power_charge_set); + + return 0; +} + +void mx28_power_configure_power_source(void) +{ + mx28_src_power_init(); + + mx28_5v_boot(); + mx28_power_clock2pll(); + + mx28_init_batt_bo(); + mx28_switch_vddd_to_dcdc_source(); +} + +void mx28_enable_output_rail_protection(void) +{ + struct mx28_power_regs *power_regs = + (struct mx28_power_regs *)MXS_POWER_BASE; + + writel(POWER_CTRL_VDDD_BO_IRQ | POWER_CTRL_VDDA_BO_IRQ | + POWER_CTRL_VDDIO_BO_IRQ, &power_regs->hw_power_ctrl_clr); + + setbits_le32(&power_regs->hw_power_vdddctrl, + POWER_VDDDCTRL_PWDN_BRNOUT); + + setbits_le32(&power_regs->hw_power_vddactrl, + POWER_VDDACTRL_PWDN_BRNOUT); + + setbits_le32(&power_regs->hw_power_vddioctrl, + POWER_VDDIOCTRL_PWDN_BRNOUT); +} + +int mx28_get_vddio_power_source_off(void) +{ + struct mx28_power_regs *power_regs = + (struct mx28_power_regs *)MXS_POWER_BASE; + uint32_t tmp; + + if (readl(&power_regs->hw_power_sts) & POWER_STS_VDD5V_GT_VDDIO) { + tmp = readl(&power_regs->hw_power_vddioctrl); + if (tmp & POWER_VDDIOCTRL_DISABLE_FET) { + if ((tmp & POWER_VDDIOCTRL_LINREG_OFFSET_MASK) == + POWER_VDDDCTRL_LINREG_OFFSET_0STEPS) { + return 1; + } + } + + if (!(readl(&power_regs->hw_power_5vctrl) & + POWER_5VCTRL_ENABLE_DCDC)) { + if ((tmp & POWER_VDDIOCTRL_LINREG_OFFSET_MASK) == + POWER_VDDDCTRL_LINREG_OFFSET_0STEPS) { + return 1; + } + } + } + + return 0; + +} + +int mx28_get_vddd_power_source_off(void) +{ + struct mx28_power_regs *power_regs = + (struct mx28_power_regs *)MXS_POWER_BASE; + uint32_t tmp; + + tmp = readl(&power_regs->hw_power_vdddctrl); + if (tmp & POWER_VDDDCTRL_DISABLE_FET) { + if ((tmp & POWER_VDDDCTRL_LINREG_OFFSET_MASK) == + POWER_VDDDCTRL_LINREG_OFFSET_0STEPS) { + return 1; + } + } + + if (readl(&power_regs->hw_power_sts) & POWER_STS_VDD5V_GT_VDDIO) { + if (!(readl(&power_regs->hw_power_5vctrl) & + POWER_5VCTRL_ENABLE_DCDC)) { + return 1; + } + } + + if (!(tmp & POWER_VDDDCTRL_ENABLE_LINREG)) { + if ((tmp & POWER_VDDDCTRL_LINREG_OFFSET_MASK) == + POWER_VDDDCTRL_LINREG_OFFSET_1STEPS_BELOW) { + return 1; + } + } + + return 0; +} + +void mx28_power_set_vddio(uint32_t new_target, uint32_t new_brownout) +{ + struct mx28_power_regs *power_regs = + (struct mx28_power_regs *)MXS_POWER_BASE; + uint32_t cur_target, diff, bo_int = 0; + uint32_t powered_by_linreg = 0; + + new_brownout = new_target - new_brownout; + + cur_target = readl(&power_regs->hw_power_vddioctrl); + cur_target &= POWER_VDDIOCTRL_TRG_MASK; + cur_target *= 50; /* 50 mV step*/ + cur_target += 2800; /* 2800 mV lowest */ + + powered_by_linreg = mx28_get_vddio_power_source_off(); + if (new_target > cur_target) { + + if (powered_by_linreg) { + bo_int = readl(&power_regs->hw_power_vddioctrl); + clrbits_le32(&power_regs->hw_power_vddioctrl, + POWER_CTRL_ENIRQ_VDDIO_BO); + } + + setbits_le32(&power_regs->hw_power_vddioctrl, + POWER_VDDIOCTRL_BO_OFFSET_MASK); + do { + if (new_target - cur_target > 100) + diff = cur_target + 100; + else + diff = new_target; + + diff -= 2800; + diff /= 50; + + clrsetbits_le32(&power_regs->hw_power_vddioctrl, + POWER_VDDIOCTRL_TRG_MASK, diff); + + if (powered_by_linreg) + early_delay(1500); + else { + while (!(readl(&power_regs->hw_power_sts) & + POWER_STS_DC_OK)) + ; + + } + + cur_target = readl(&power_regs->hw_power_vddioctrl); + cur_target &= POWER_VDDIOCTRL_TRG_MASK; + cur_target *= 50; /* 50 mV step*/ + cur_target += 2800; /* 2800 mV lowest */ + } while (new_target > cur_target); + + if (powered_by_linreg) { + writel(POWER_CTRL_VDDIO_BO_IRQ, + &power_regs->hw_power_ctrl_clr); + if (bo_int & POWER_CTRL_ENIRQ_VDDIO_BO) + setbits_le32(&power_regs->hw_power_vddioctrl, + POWER_CTRL_ENIRQ_VDDIO_BO); + } + } else { + do { + if (cur_target - new_target > 100) + diff = cur_target - 100; + else + diff = new_target; + + diff -= 2800; + diff /= 50; + + clrsetbits_le32(&power_regs->hw_power_vddioctrl, + POWER_VDDIOCTRL_TRG_MASK, diff); + + if (powered_by_linreg) + early_delay(1500); + else { + while (!(readl(&power_regs->hw_power_sts) & + POWER_STS_DC_OK)) + ; + + } + + cur_target = readl(&power_regs->hw_power_vddioctrl); + cur_target &= POWER_VDDIOCTRL_TRG_MASK; + cur_target *= 50; /* 50 mV step*/ + cur_target += 2800; /* 2800 mV lowest */ + } while (new_target < cur_target); + } + + clrsetbits_le32(&power_regs->hw_power_vddioctrl, + POWER_VDDDCTRL_BO_OFFSET_MASK, + new_brownout << POWER_VDDDCTRL_BO_OFFSET_OFFSET); +} + +void mx28_power_set_vddd(uint32_t new_target, uint32_t new_brownout) +{ + struct mx28_power_regs *power_regs = + (struct mx28_power_regs *)MXS_POWER_BASE; + uint32_t cur_target, diff, bo_int = 0; + uint32_t powered_by_linreg = 0; + + new_brownout = new_target - new_brownout; + + cur_target = readl(&power_regs->hw_power_vdddctrl); + cur_target &= POWER_VDDDCTRL_TRG_MASK; + cur_target *= 25; /* 25 mV step*/ + cur_target += 800; /* 800 mV lowest */ + + powered_by_linreg = mx28_get_vddd_power_source_off(); + if (new_target > cur_target) { + if (powered_by_linreg) { + bo_int = readl(&power_regs->hw_power_vdddctrl); + clrbits_le32(&power_regs->hw_power_vdddctrl, + POWER_CTRL_ENIRQ_VDDD_BO); + } + + setbits_le32(&power_regs->hw_power_vdddctrl, + POWER_VDDDCTRL_BO_OFFSET_MASK); + + do { + if (new_target - cur_target > 100) + diff = cur_target + 100; + else + diff = new_target; + + diff -= 800; + diff /= 25; + + clrsetbits_le32(&power_regs->hw_power_vdddctrl, + POWER_VDDDCTRL_TRG_MASK, diff); + + if (powered_by_linreg) + early_delay(1500); + else { + while (!(readl(&power_regs->hw_power_sts) & + POWER_STS_DC_OK)) + ; + + } + + cur_target = readl(&power_regs->hw_power_vdddctrl); + cur_target &= POWER_VDDDCTRL_TRG_MASK; + cur_target *= 25; /* 25 mV step*/ + cur_target += 800; /* 800 mV lowest */ + } while (new_target > cur_target); + + if (powered_by_linreg) { + writel(POWER_CTRL_VDDD_BO_IRQ, + &power_regs->hw_power_ctrl_clr); + if (bo_int & POWER_CTRL_ENIRQ_VDDD_BO) + setbits_le32(&power_regs->hw_power_vdddctrl, + POWER_CTRL_ENIRQ_VDDD_BO); + } + } else { + do { + if (cur_target - new_target > 100) + diff = cur_target - 100; + else + diff = new_target; + + diff -= 800; + diff /= 25; + + clrsetbits_le32(&power_regs->hw_power_vdddctrl, + POWER_VDDDCTRL_TRG_MASK, diff); + + if (powered_by_linreg) + early_delay(1500); + else { + while (!(readl(&power_regs->hw_power_sts) & + POWER_STS_DC_OK)) + ; + + } + + cur_target = readl(&power_regs->hw_power_vdddctrl); + cur_target &= POWER_VDDDCTRL_TRG_MASK; + cur_target *= 25; /* 25 mV step*/ + cur_target += 800; /* 800 mV lowest */ + } while (new_target < cur_target); + } + + clrsetbits_le32(&power_regs->hw_power_vdddctrl, + POWER_VDDDCTRL_BO_OFFSET_MASK, + new_brownout << POWER_VDDDCTRL_BO_OFFSET_OFFSET); +} + +void mx28_power_init(void) +{ + struct mx28_power_regs *power_regs = + (struct mx28_power_regs *)MXS_POWER_BASE; + + mx28_power_clock2xtal(); + mx28_power_clear_auto_restart(); + mx28_power_set_linreg(); + mx28_power_setup_5v_detect(); + mx28_power_configure_power_source(); + mx28_enable_output_rail_protection(); + + mx28_power_set_vddio(3300, 3150); + + mx28_power_set_vddd(1350, 1200); + + writel(POWER_CTRL_VDDD_BO_IRQ | POWER_CTRL_VDDA_BO_IRQ | + POWER_CTRL_VDDIO_BO_IRQ | POWER_CTRL_VDD5V_DROOP_IRQ | + POWER_CTRL_VBUS_VALID_IRQ | POWER_CTRL_BATT_BO_IRQ | + POWER_CTRL_DCDC4P2_BO_IRQ, &power_regs->hw_power_ctrl_clr); + + writel(POWER_5VCTRL_PWDN_5VBRNOUT, &power_regs->hw_power_5vctrl_set); + + early_delay(1000); +} + +#ifdef CONFIG_SPL_MX28_PSWITCH_WAIT +void mx28_power_wait_pswitch(void) +{ + struct mx28_power_regs *power_regs = + (struct mx28_power_regs *)MXS_POWER_BASE; + + while (!(readl(&power_regs->hw_power_sts) & POWER_STS_PSWITCH_MASK)) + ; +} +#endif diff --git a/arch/arm/cpu/arm926ejs/mx28/start.S b/arch/arm/cpu/arm926ejs/mx28/start.S new file mode 100644 index 0000000000..94696d6cdc --- /dev/null +++ b/arch/arm/cpu/arm926ejs/mx28/start.S @@ -0,0 +1,234 @@ +/* + * armboot - Startup Code for ARM926EJS CPU-core + * + * Copyright (c) 2003 Texas Instruments + * + * ----- Adapted for OMAP1610 OMAP730 from ARM925t code ------ + * + * Copyright (c) 2001 Marius Groger + * Copyright (c) 2002 Alex Zupke + * Copyright (c) 2002 Gary Jennejohn + * Copyright (c) 2003 Richard Woodruff + * Copyright (c) 2003 Kshitij + * Copyright (c) 2010 Albert Aribaud + * + * Change to support call back into iMX28 bootrom + * Copyright (c) 2011 Marek Vasut + * on behalf of DENX Software Engineering GmbH + * + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + +#include +#include +#include +#include + +#if defined(CONFIG_OMAP1610) +#include <./configs/omap1510.h> +#elif defined(CONFIG_OMAP730) +#include <./configs/omap730.h> +#endif + +/* + ************************************************************************* + * + * Jump vector table as in table 3.1 in [1] + * + ************************************************************************* + */ + + +.globl _start +_start: + b reset + b undefined_instruction + b software_interrupt + b prefetch_abort + b data_abort + b not_used + b irq + b fiq + +/* + * Vector table, located at address 0x20. + * This table allows the code running AFTER SPL, the U-Boot, to install it's + * interrupt handlers here. The problem is that the U-Boot is loaded into RAM, + * including it's interrupt vectoring table and the table at 0x0 is still the + * SPLs. So if interrupt happens in U-Boot, the SPLs interrupt vectoring table + * is still used. + */ +_vt_reset: + .word _reset +_vt_undefined_instruction: + .word _hang +_vt_software_interrupt: + .word _hang +_vt_prefetch_abort: + .word _hang +_vt_data_abort: + .word _hang +_vt_not_used: + .word _reset +_vt_irq: + .word _hang +_vt_fiq: + .word _hang + +reset: + ldr pc, _vt_reset +undefined_instruction: + ldr pc, _vt_undefined_instruction +software_interrupt: + ldr pc, _vt_software_interrupt +prefetch_abort: + ldr pc, _vt_prefetch_abort +data_abort: + ldr pc, _vt_data_abort +not_used: + ldr pc, _vt_not_used +irq: + ldr pc, _vt_irq +fiq: + ldr pc, _vt_fiq + + .balignl 16,0xdeadbeef + +/* + ************************************************************************* + * + * Startup Code (reset vector) + * + * do important init only if we don't start from memory! + * setup Memory and board specific bits prior to relocation. + * relocate armboot to ram + * setup stack + * + ************************************************************************* + */ + +.globl _TEXT_BASE +_TEXT_BASE: + .word CONFIG_SYS_TEXT_BASE + +/* + * These are defined in the board-specific linker script. + * Subtracting _start from them lets the linker put their + * relative position in the executable instead of leaving + * them null. + */ +.globl _bss_start_ofs +_bss_start_ofs: + .word __bss_start - _start + +.globl _bss_end_ofs +_bss_end_ofs: + .word __bss_end__ - _start + +.globl _end_ofs +_end_ofs: + .word _end - _start + +#ifdef CONFIG_USE_IRQ +/* IRQ stack memory (calculated at run-time) */ +.globl IRQ_STACK_START +IRQ_STACK_START: + .word 0x0badc0de + +/* IRQ stack memory (calculated at run-time) */ +.globl FIQ_STACK_START +FIQ_STACK_START: + .word 0x0badc0de +#endif + +/* IRQ stack memory (calculated at run-time) + 8 bytes */ +.globl IRQ_STACK_START_IN +IRQ_STACK_START_IN: + .word 0x0badc0de + +/* + * the actual reset code + */ + +_reset: + /* + * Store all registers on old stack pointer, this will allow us later to + * return to the BootROM and let the BootROM load U-Boot into RAM. + */ + push {r0-r12,r14} + + /* + * set the cpu to SVC32 mode + */ + mrs r0,cpsr + bic r0,r0,#0x1f + orr r0,r0,#0xd3 + msr cpsr,r0 + + /* + * we do sys-critical inits only at reboot, + * not when booting from ram! + */ +#ifndef CONFIG_SKIP_LOWLEVEL_INIT + bl cpu_init_crit +#endif + + bl board_init_ll + + pop {r0-r12,r14} + bx lr + +/* + ************************************************************************* + * + * CPU_init_critical registers + * + * setup important registers + * setup memory timing + * + ************************************************************************* + */ +#ifndef CONFIG_SKIP_LOWLEVEL_INIT +cpu_init_crit: + /* + * flush v4 I/D caches + */ + mov r0, #0 + mcr p15, 0, r0, c7, c7, 0 /* flush v3/v4 cache */ + mcr p15, 0, r0, c8, c7, 0 /* flush v4 TLB */ + + /* + * disable MMU stuff and caches + */ + mrc p15, 0, r0, c1, c0, 0 + bic r0, r0, #0x00002300 /* clear bits 13, 9:8 (--V- --RS) */ + bic r0, r0, #0x00000087 /* clear bits 7, 2:0 (B--- -CAM) */ + orr r0, r0, #0x00000002 /* set bit 2 (A) Align */ + orr r0, r0, #0x00001000 /* set bit 12 (I) I-Cache */ + mcr p15, 0, r0, c1, c0, 0 + + mov pc, lr /* back to my caller */ + + .align 5 +#endif /* CONFIG_SKIP_LOWLEVEL_INIT */ + +_hang: + ldr sp, _TEXT_BASE /* switch to abort stack */ +1: + bl 1b /* hang and never return */ diff --git a/arch/arm/cpu/arm926ejs/mx28/u-boot-spl.lds b/arch/arm/cpu/arm926ejs/mx28/u-boot-spl.lds new file mode 100644 index 0000000000..893320f993 --- /dev/null +++ b/arch/arm/cpu/arm926ejs/mx28/u-boot-spl.lds @@ -0,0 +1,87 @@ +/* + * Copyright (C) 2011 Marek Vasut + * on behalf of DENX Software Engineering GmbH + * + * January 2004 - Changed to support H4 device + * Copyright (c) 2004-2008 Texas Instruments + * + * (C) Copyright 2002 + * Gary Jennejohn, DENX Software Engineering, + * + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + +OUTPUT_FORMAT("elf32-littlearm", "elf32-littlearm", "elf32-littlearm") +OUTPUT_ARCH(arm) +ENTRY(_start) +SECTIONS +{ + . = 0x00000000; + + . = ALIGN(4); + .text : + { + arch/arm/cpu/arm926ejs/mx28/start.o (.text) + *(.text) + } + + . = ALIGN(4); + .rodata : { *(SORT_BY_ALIGNMENT(SORT_BY_NAME(.rodata*))) } + + . = ALIGN(4); + .data : { + *(.data) + } + + . = ALIGN(4); + __u_boot_cmd_start = .; + .u_boot_cmd : { *(.u_boot_cmd) } + __u_boot_cmd_end = .; + + . = ALIGN(4); + + .rel.dyn : { + __rel_dyn_start = .; + *(.rel*) + __rel_dyn_end = .; + } + + .dynsym : { + __dynsym_start = .; + *(.dynsym) + } + + _end = .; + + .bss __rel_dyn_start (OVERLAY) : { + __bss_start = .; + *(.bss) + . = ALIGN(4); + __bss_end__ = .; + } + + /DISCARD/ : { *(.bss*) } + /DISCARD/ : { *(.dynstr*) } + /DISCARD/ : { *(.dynsym*) } + /DISCARD/ : { *(.dynamic*) } + /DISCARD/ : { *(.hash*) } + /DISCARD/ : { *(.plt*) } + /DISCARD/ : { *(.interp*) } + /DISCARD/ : { *(.gnu*) } +} diff --git a/arch/arm/include/asm/arch-mx28/sys_proto.h b/arch/arm/include/asm/arch-mx28/sys_proto.h index a226ea4840..be1f7db2ae 100644 --- a/arch/arm/include/asm/arch-mx28/sys_proto.h +++ b/arch/arm/include/asm/arch-mx28/sys_proto.h @@ -29,4 +29,10 @@ int mx28_wait_mask_clr(struct mx28_register *reg, uint32_t mask, int timeout); int mxsmmc_initialize(bd_t *bis, int id, int (*wp)(int)); +#ifdef CONFIG_SPL_BUILD +#include +void mx28_common_spl_init(const iomux_cfg_t *iomux_setup, + const unsigned int iomux_size); +#endif + #endif /* __MX28_H__ */ diff --git a/board/denx/m28evk/Makefile b/board/denx/m28evk/Makefile index b6f002fe36..aa16c7d156 100644 --- a/board/denx/m28evk/Makefile +++ b/board/denx/m28evk/Makefile @@ -27,10 +27,8 @@ LIB = $(obj)lib$(BOARD).o ifndef CONFIG_SPL_BUILD COBJS := m28evk.o -endif - -ifdef CONFIG_SPL_BUILD -COBJS := mem_init.o mmc_boot.o power_init.o memsize.o +else +COBJS := spl_boot.o endif SRCS := $(COBJS:.o=.c) @@ -41,11 +39,6 @@ $(LIB): $(obj).depend $(OBJS) all: $(ALL) -ifdef CONFIG_SPL_BUILD -memsize.c: - ln -sf $(TOPDIR)/common/memsize.c $@ -endif - ######################################################################### # defines $(obj).depend target diff --git a/board/denx/m28evk/m28_init.h b/board/denx/m28evk/m28_init.h deleted file mode 100644 index 98d363199d..0000000000 --- a/board/denx/m28evk/m28_init.h +++ /dev/null @@ -1,41 +0,0 @@ -/* - * Freescale i.MX28 SPL functions - * - * Copyright (C) 2011 Marek Vasut - * on behalf of DENX Software Engineering GmbH - * - * See file CREDITS for list of people who contributed to this - * project. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation; either version 2 of - * the License, or (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, - * MA 02111-1307 USA - */ - -#ifndef __M28_INIT_H__ -#define __M28_INIT_H__ - -void early_delay(int delay); - -void mx28_power_init(void); - -#ifdef CONFIG_SPL_MX28_PSWITCH_WAIT -void mx28_power_wait_pswitch(void); -#else -static inline void mx28_power_wait_pswitch(void) { } -#endif - -void mx28_mem_init(void); - -#endif /* __M28_INIT_H__ */ diff --git a/board/denx/m28evk/mem_init.c b/board/denx/m28evk/mem_init.c deleted file mode 100644 index 17d1f9b6a1..0000000000 --- a/board/denx/m28evk/mem_init.c +++ /dev/null @@ -1,240 +0,0 @@ -/* - * Freescale i.MX28 RAM init - * - * Copyright (C) 2011 Marek Vasut - * on behalf of DENX Software Engineering GmbH - * - * See file CREDITS for list of people who contributed to this - * project. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation; either version 2 of - * the License, or (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, - * MA 02111-1307 USA - */ - -#include -#include -#include -#include -#include - -#include "m28_init.h" - -uint32_t dram_vals[] = { - 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, - 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, - 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, - 0x00000000, 0x00000000, 0x00000100, 0x00000000, 0x00000000, - 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, - 0x00000000, 0x00010101, 0x01010101, 0x000f0f01, 0x0f02020a, - 0x00000000, 0x00010101, 0x00000100, 0x00000100, 0x00000000, - 0x00000002, 0x01010000, 0x05060302, 0x06005003, 0x0a0000c8, - 0x02009c40, 0x0000030c, 0x0036a609, 0x031a0612, 0x02030202, - 0x00c8001c, 0x00000000, 0x00000000, 0x00012100, 0xffff0303, - 0x00012100, 0xffff0303, 0x00012100, 0xffff0303, 0x00012100, - 0xffff0303, 0x00000003, 0x00000000, 0x00000000, 0x00000000, - 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, - 0x00000000, 0x00000612, 0x01000F02, 0x06120612, 0x00000200, - 0x00020007, 0xf5014b27, 0xf5014b27, 0xf5014b27, 0xf5014b27, - 0x07000300, 0x07000300, 0x07000300, 0x07000300, 0x00000006, - 0x00000000, 0x00000000, 0x01000000, 0x01020408, 0x08040201, - 0x000f1133, 0x00000000, 0x00001f04, 0x00001f04, 0x00001f04, - 0x00001f04, 0x00001f04, 0x00001f04, 0x00001f04, 0x00001f04, - 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, - 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, - 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, - 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, - 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, - 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, - 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, - 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, - 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, - 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, - 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, - 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, - 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, - 0x00000000, 0x00000000, 0x00010000, 0x00020304, 0x00000004, - 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, - 0x00000000, 0x01010000, 0x01000000, 0x03030000, 0x00010303, - 0x01020202, 0x00000000, 0x02040303, 0x21002103, 0x00061200, - 0x06120612, 0x04320432, 0x04320432, 0x00040004, 0x00040004, - 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00010001 -}; - -void init_m28_200mhz_ddr2(void) -{ - int i; - - for (i = 0; i < ARRAY_SIZE(dram_vals); i++) - writel(dram_vals[i], MXS_DRAM_BASE + (4 * i)); -} - -void mx28_mem_init_clock(void) -{ - struct mx28_clkctrl_regs *clkctrl_regs = - (struct mx28_clkctrl_regs *)MXS_CLKCTRL_BASE; - - /* Gate EMI clock */ - writel(CLKCTRL_FRAC0_CLKGATEEMI, - &clkctrl_regs->hw_clkctrl_frac0_set); - - /* EMI = 205MHz */ - writel(CLKCTRL_FRAC0_EMIFRAC_MASK, - &clkctrl_regs->hw_clkctrl_frac0_set); - writel((0x2a << CLKCTRL_FRAC0_EMIFRAC_OFFSET) & - CLKCTRL_FRAC0_EMIFRAC_MASK, - &clkctrl_regs->hw_clkctrl_frac0_clr); - - /* Ungate EMI clock */ - writel(CLKCTRL_FRAC0_CLKGATEEMI, - &clkctrl_regs->hw_clkctrl_frac0_clr); - - early_delay(11000); - - writel((2 << CLKCTRL_EMI_DIV_EMI_OFFSET) | - (1 << CLKCTRL_EMI_DIV_XTAL_OFFSET), - &clkctrl_regs->hw_clkctrl_emi); - - /* Unbypass EMI */ - writel(CLKCTRL_CLKSEQ_BYPASS_EMI, - &clkctrl_regs->hw_clkctrl_clkseq_clr); - - early_delay(10000); -} - -void mx28_mem_setup_cpu_and_hbus(void) -{ - struct mx28_clkctrl_regs *clkctrl_regs = - (struct mx28_clkctrl_regs *)MXS_CLKCTRL_BASE; - - /* CPU = 454MHz and ungate CPU clock */ - clrsetbits_le32(&clkctrl_regs->hw_clkctrl_frac0, - CLKCTRL_FRAC0_CPUFRAC_MASK | CLKCTRL_FRAC0_CLKGATECPU, - 19 << CLKCTRL_FRAC0_CPUFRAC_OFFSET); - - /* Set CPU bypass */ - writel(CLKCTRL_CLKSEQ_BYPASS_CPU, - &clkctrl_regs->hw_clkctrl_clkseq_set); - - /* HBUS = 151MHz */ - writel(CLKCTRL_HBUS_DIV_MASK, &clkctrl_regs->hw_clkctrl_hbus_set); - writel(((~3) << CLKCTRL_HBUS_DIV_OFFSET) & CLKCTRL_HBUS_DIV_MASK, - &clkctrl_regs->hw_clkctrl_hbus_clr); - - early_delay(10000); - - /* CPU clock divider = 1 */ - clrsetbits_le32(&clkctrl_regs->hw_clkctrl_cpu, - CLKCTRL_CPU_DIV_CPU_MASK, 1); - - /* Disable CPU bypass */ - writel(CLKCTRL_CLKSEQ_BYPASS_CPU, - &clkctrl_regs->hw_clkctrl_clkseq_clr); -} - -void mx28_mem_setup_vdda(void) -{ - struct mx28_power_regs *power_regs = - (struct mx28_power_regs *)MXS_POWER_BASE; - - writel((0xc << POWER_VDDACTRL_TRG_OFFSET) | - (0x7 << POWER_VDDACTRL_BO_OFFSET_OFFSET) | - POWER_VDDACTRL_LINREG_OFFSET_1STEPS_BELOW, - &power_regs->hw_power_vddactrl); -} - -void mx28_mem_setup_vddd(void) -{ - struct mx28_power_regs *power_regs = - (struct mx28_power_regs *)MXS_POWER_BASE; - - writel((0x1c << POWER_VDDDCTRL_TRG_OFFSET) | - (0x7 << POWER_VDDDCTRL_BO_OFFSET_OFFSET) | - POWER_VDDDCTRL_LINREG_OFFSET_1STEPS_BELOW, - &power_regs->hw_power_vdddctrl); -} - -#define HW_DIGCTRL_SCRATCH0 0x8001c280 -#define HW_DIGCTRL_SCRATCH1 0x8001c290 -void data_abort_memdetect_handler(void) __attribute__((naked)); -void data_abort_memdetect_handler(void) -{ - asm volatile("subs pc, r14, #4"); -} - -void mx28_mem_get_size(void) -{ - uint32_t sz, da; - uint32_t *vt = (uint32_t *)0x20; - - /* Replace the DABT handler. */ - da = vt[4]; - vt[4] = (uint32_t)&data_abort_memdetect_handler; - - sz = get_ram_size((long *)PHYS_SDRAM_1, PHYS_SDRAM_1_SIZE); - writel(sz, HW_DIGCTRL_SCRATCH0); - writel(sz, HW_DIGCTRL_SCRATCH1); - - /* Restore the old DABT handler. */ - vt[4] = da; -} - -void mx28_mem_init(void) -{ - struct mx28_clkctrl_regs *clkctrl_regs = - (struct mx28_clkctrl_regs *)MXS_CLKCTRL_BASE; - struct mx28_pinctrl_regs *pinctrl_regs = - (struct mx28_pinctrl_regs *)MXS_PINCTRL_BASE; - - /* Set DDR2 mode */ - writel(PINCTRL_EMI_DS_CTRL_DDR_MODE_DDR2, - &pinctrl_regs->hw_pinctrl_emi_ds_ctrl_set); - - /* Power up PLL0 */ - writel(CLKCTRL_PLL0CTRL0_POWER, - &clkctrl_regs->hw_clkctrl_pll0ctrl0_set); - - early_delay(11000); - - mx28_mem_init_clock(); - - mx28_mem_setup_vdda(); - - /* - * Configure the DRAM registers - */ - - /* Clear START bit from DRAM_CTL16 */ - clrbits_le32(MXS_DRAM_BASE + 0x40, 1); - - init_m28_200mhz_ddr2(); - - /* Clear SREFRESH bit from DRAM_CTL17 */ - clrbits_le32(MXS_DRAM_BASE + 0x44, 1); - - /* Set START bit in DRAM_CTL16 */ - setbits_le32(MXS_DRAM_BASE + 0x40, 1); - - /* Wait for bit 20 (DRAM init complete) in DRAM_CTL58 */ - while (!(readl(MXS_DRAM_BASE + 0xe8) & (1 << 20))) - ; - - mx28_mem_setup_vddd(); - - early_delay(10000); - - mx28_mem_setup_cpu_and_hbus(); - - mx28_mem_get_size(); -} diff --git a/board/denx/m28evk/mmc_boot.c b/board/denx/m28evk/mmc_boot.c deleted file mode 100644 index 86d3ab5e1c..0000000000 --- a/board/denx/m28evk/mmc_boot.c +++ /dev/null @@ -1,273 +0,0 @@ -/* - * Freescale i.MX28 Boot setup - * - * Copyright (C) 2011 Marek Vasut - * on behalf of DENX Software Engineering GmbH - * - * See file CREDITS for list of people who contributed to this - * project. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation; either version 2 of - * the License, or (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, - * MA 02111-1307 USA - */ - -#include -#include -#include -#include - -#include "m28_init.h" - -/* - * This delay function is intended to be used only in early stage of boot, where - * clock are not set up yet. The timer used here is reset on every boot and - * takes a few seconds to roll. The boot doesn't take that long, so to keep the - * code simple, it doesn't take rolling into consideration. - */ -#define HW_DIGCTRL_MICROSECONDS 0x8001c0c0 -void early_delay(int delay) -{ - uint32_t st = readl(HW_DIGCTRL_MICROSECONDS); - st += delay; - while (st > readl(HW_DIGCTRL_MICROSECONDS)) - ; -} - -#define MUX_CONFIG_LED (MXS_PAD_3V3 | MXS_PAD_4MA | MXS_PAD_NOPULL) -#define MUX_CONFIG_LCD (MXS_PAD_3V3 | MXS_PAD_4MA) -#define MUX_CONFIG_TSC (MXS_PAD_3V3 | MXS_PAD_8MA | MXS_PAD_PULLUP) -#define MUX_CONFIG_SSP0 (MXS_PAD_3V3 | MXS_PAD_12MA | MXS_PAD_PULLUP) -#define MUX_CONFIG_SSP2 (MXS_PAD_3V3 | MXS_PAD_4MA | MXS_PAD_PULLUP) -#define MUX_CONFIG_GPMI (MXS_PAD_1V8 | MXS_PAD_4MA | MXS_PAD_NOPULL) -#define MUX_CONFIG_ENET (MXS_PAD_3V3 | MXS_PAD_4MA | MXS_PAD_PULLUP) -#define MUX_CONFIG_EMI (MXS_PAD_3V3 | MXS_PAD_12MA | MXS_PAD_NOPULL) - -const iomux_cfg_t iomux_setup[] = { - /* LED */ - MX28_PAD_ENET0_RXD3__GPIO_4_10 | MUX_CONFIG_LED, - - /* framebuffer */ - MX28_PAD_LCD_D00__LCD_D0 | MUX_CONFIG_LCD, - MX28_PAD_LCD_D01__LCD_D1 | MUX_CONFIG_LCD, - MX28_PAD_LCD_D02__LCD_D2 | MUX_CONFIG_LCD, - MX28_PAD_LCD_D03__LCD_D3 | MUX_CONFIG_LCD, - MX28_PAD_LCD_D04__LCD_D4 | MUX_CONFIG_LCD, - MX28_PAD_LCD_D05__LCD_D5 | MUX_CONFIG_LCD, - MX28_PAD_LCD_D06__LCD_D6 | MUX_CONFIG_LCD, - MX28_PAD_LCD_D07__LCD_D7 | MUX_CONFIG_LCD, - MX28_PAD_LCD_D08__LCD_D8 | MUX_CONFIG_LCD, - MX28_PAD_LCD_D09__LCD_D9 | MUX_CONFIG_LCD, - MX28_PAD_LCD_D10__LCD_D10 | MUX_CONFIG_LCD, - MX28_PAD_LCD_D11__LCD_D11 | MUX_CONFIG_LCD, - MX28_PAD_LCD_D12__LCD_D12 | MUX_CONFIG_LCD, - MX28_PAD_LCD_D13__LCD_D13 | MUX_CONFIG_LCD, - MX28_PAD_LCD_D14__LCD_D14 | MUX_CONFIG_LCD, - MX28_PAD_LCD_D15__LCD_D15 | MUX_CONFIG_LCD, - MX28_PAD_LCD_D16__LCD_D16 | MUX_CONFIG_LCD, - MX28_PAD_LCD_D17__LCD_D17 | MUX_CONFIG_LCD, - MX28_PAD_LCD_D18__LCD_D18 | MUX_CONFIG_LCD, - MX28_PAD_LCD_D19__LCD_D19 | MUX_CONFIG_LCD, - MX28_PAD_LCD_D20__LCD_D20 | MUX_CONFIG_LCD, - MX28_PAD_LCD_D21__LCD_D21 | MUX_CONFIG_LCD, - MX28_PAD_LCD_D22__LCD_D22 | MUX_CONFIG_LCD, - MX28_PAD_LCD_D23__LCD_D23 | MUX_CONFIG_LCD, - MX28_PAD_LCD_RD_E__LCD_VSYNC | MUX_CONFIG_LCD, - MX28_PAD_LCD_WR_RWN__LCD_HSYNC | MUX_CONFIG_LCD, - MX28_PAD_LCD_RS__LCD_DOTCLK | MUX_CONFIG_LCD, - MX28_PAD_LCD_CS__LCD_CS | MUX_CONFIG_LCD, - MX28_PAD_LCD_VSYNC__LCD_VSYNC | MUX_CONFIG_LCD, - MX28_PAD_LCD_HSYNC__LCD_HSYNC | MUX_CONFIG_LCD, - MX28_PAD_LCD_DOTCLK__LCD_DOTCLK | MUX_CONFIG_LCD, - MX28_PAD_LCD_ENABLE__GPIO_1_31 | MUX_CONFIG_LCD, - MX28_PAD_LCD_RESET__GPIO_3_30 | MUX_CONFIG_LCD, - - /* UART1 */ - MX28_PAD_PWM0__DUART_RX, - MX28_PAD_PWM1__DUART_TX, - MX28_PAD_AUART0_TX__DUART_RTS, - MX28_PAD_AUART0_RX__DUART_CTS, - - /* UART2 */ - MX28_PAD_AUART1_RX__AUART1_RX, - MX28_PAD_AUART1_TX__AUART1_TX, - MX28_PAD_AUART1_RTS__AUART1_RTS, - MX28_PAD_AUART1_CTS__AUART1_CTS, - - /* CAN */ - MX28_PAD_GPMI_RDY2__CAN0_TX, - MX28_PAD_GPMI_RDY3__CAN0_RX, - - /* I2C */ - MX28_PAD_I2C0_SCL__I2C0_SCL, - MX28_PAD_I2C0_SDA__I2C0_SDA, - - /* TSC2007 */ - MX28_PAD_SAIF0_MCLK__GPIO_3_20 | MUX_CONFIG_TSC, - - /* MMC0 */ - MX28_PAD_SSP0_DATA0__SSP0_D0 | MUX_CONFIG_SSP0, - MX28_PAD_SSP0_DATA1__SSP0_D1 | MUX_CONFIG_SSP0, - MX28_PAD_SSP0_DATA2__SSP0_D2 | MUX_CONFIG_SSP0, - MX28_PAD_SSP0_DATA3__SSP0_D3 | MUX_CONFIG_SSP0, - MX28_PAD_SSP0_DATA4__SSP0_D4 | MUX_CONFIG_SSP0, - MX28_PAD_SSP0_DATA5__SSP0_D5 | MUX_CONFIG_SSP0, - MX28_PAD_SSP0_DATA6__SSP0_D6 | MUX_CONFIG_SSP0, - MX28_PAD_SSP0_DATA7__SSP0_D7 | MUX_CONFIG_SSP0, - MX28_PAD_SSP0_CMD__SSP0_CMD | MUX_CONFIG_SSP0, - MX28_PAD_SSP0_DETECT__SSP0_CARD_DETECT | - (MXS_PAD_3V3 | MXS_PAD_12MA | MXS_PAD_NOPULL), - MX28_PAD_SSP0_SCK__SSP0_SCK | - (MXS_PAD_3V3 | MXS_PAD_12MA | MXS_PAD_NOPULL), - MX28_PAD_PWM3__GPIO_3_28 | MUX_CONFIG_SSP0, /* Power .. FIXME */ - MX28_PAD_AUART2_CTS__GPIO_3_10, /* WP ... FIXME */ - - /* GPMI NAND */ - MX28_PAD_GPMI_D00__GPMI_D0 | MUX_CONFIG_GPMI, - MX28_PAD_GPMI_D01__GPMI_D1 | MUX_CONFIG_GPMI, - MX28_PAD_GPMI_D02__GPMI_D2 | MUX_CONFIG_GPMI, - MX28_PAD_GPMI_D03__GPMI_D3 | MUX_CONFIG_GPMI, - MX28_PAD_GPMI_D04__GPMI_D4 | MUX_CONFIG_GPMI, - MX28_PAD_GPMI_D05__GPMI_D5 | MUX_CONFIG_GPMI, - MX28_PAD_GPMI_D06__GPMI_D6 | MUX_CONFIG_GPMI, - MX28_PAD_GPMI_D07__GPMI_D7 | MUX_CONFIG_GPMI, - MX28_PAD_GPMI_CE0N__GPMI_CE0N | MUX_CONFIG_GPMI, - MX28_PAD_GPMI_RDY0__GPMI_READY0 | MUX_CONFIG_GPMI, - MX28_PAD_GPMI_RDN__GPMI_RDN | - (MXS_PAD_1V8 | MXS_PAD_8MA | MXS_PAD_PULLUP), - MX28_PAD_GPMI_WRN__GPMI_WRN | MUX_CONFIG_GPMI, - MX28_PAD_GPMI_ALE__GPMI_ALE | MUX_CONFIG_GPMI, - MX28_PAD_GPMI_CLE__GPMI_CLE | MUX_CONFIG_GPMI, - MX28_PAD_GPMI_RESETN__GPMI_RESETN | MUX_CONFIG_GPMI, - - /* FEC Ethernet */ - MX28_PAD_ENET0_MDC__ENET0_MDC | MUX_CONFIG_ENET, - MX28_PAD_ENET0_MDIO__ENET0_MDIO | MUX_CONFIG_ENET, - MX28_PAD_ENET0_RX_EN__ENET0_RX_EN | MUX_CONFIG_ENET, - MX28_PAD_ENET0_TX_EN__ENET0_TX_EN | MUX_CONFIG_ENET, - MX28_PAD_ENET0_RXD0__ENET0_RXD0 | MUX_CONFIG_ENET, - MX28_PAD_ENET0_RXD1__ENET0_RXD1 | MUX_CONFIG_ENET, - MX28_PAD_ENET0_TXD0__ENET0_TXD0 | MUX_CONFIG_ENET, - MX28_PAD_ENET0_TXD1__ENET0_TXD1 | MUX_CONFIG_ENET, - MX28_PAD_ENET_CLK__CLKCTRL_ENET | MUX_CONFIG_ENET, - - MX28_PAD_ENET0_COL__ENET1_TX_EN | MUX_CONFIG_ENET, - MX28_PAD_ENET0_CRS__ENET1_RX_EN | MUX_CONFIG_ENET, - MX28_PAD_ENET0_RXD2__ENET1_RXD0 | MUX_CONFIG_ENET, - MX28_PAD_ENET0_RXD3__ENET1_RXD1 | MUX_CONFIG_ENET, - MX28_PAD_ENET0_TXD2__ENET1_TXD0 | MUX_CONFIG_ENET, - MX28_PAD_ENET0_TXD3__ENET1_TXD1 | MUX_CONFIG_ENET, - - /* I2C */ - MX28_PAD_I2C0_SCL__I2C0_SCL, - MX28_PAD_I2C0_SDA__I2C0_SDA, - - /* EMI */ - MX28_PAD_EMI_D00__EMI_DATA0 | MUX_CONFIG_EMI, - MX28_PAD_EMI_D01__EMI_DATA1 | MUX_CONFIG_EMI, - MX28_PAD_EMI_D02__EMI_DATA2 | MUX_CONFIG_EMI, - MX28_PAD_EMI_D03__EMI_DATA3 | MUX_CONFIG_EMI, - MX28_PAD_EMI_D04__EMI_DATA4 | MUX_CONFIG_EMI, - MX28_PAD_EMI_D05__EMI_DATA5 | MUX_CONFIG_EMI, - MX28_PAD_EMI_D06__EMI_DATA6 | MUX_CONFIG_EMI, - MX28_PAD_EMI_D07__EMI_DATA7 | MUX_CONFIG_EMI, - MX28_PAD_EMI_D08__EMI_DATA8 | MUX_CONFIG_EMI, - MX28_PAD_EMI_D09__EMI_DATA9 | MUX_CONFIG_EMI, - MX28_PAD_EMI_D10__EMI_DATA10 | MUX_CONFIG_EMI, - MX28_PAD_EMI_D11__EMI_DATA11 | MUX_CONFIG_EMI, - MX28_PAD_EMI_D12__EMI_DATA12 | MUX_CONFIG_EMI, - MX28_PAD_EMI_D13__EMI_DATA13 | MUX_CONFIG_EMI, - MX28_PAD_EMI_D14__EMI_DATA14 | MUX_CONFIG_EMI, - MX28_PAD_EMI_D15__EMI_DATA15 | MUX_CONFIG_EMI, - MX28_PAD_EMI_ODT0__EMI_ODT0 | MUX_CONFIG_EMI, - MX28_PAD_EMI_DQM0__EMI_DQM0 | MUX_CONFIG_EMI, - MX28_PAD_EMI_ODT1__EMI_ODT1 | MUX_CONFIG_EMI, - MX28_PAD_EMI_DQM1__EMI_DQM1 | MUX_CONFIG_EMI, - MX28_PAD_EMI_DDR_OPEN_FB__EMI_DDR_OPEN_FEEDBACK | MUX_CONFIG_EMI, - MX28_PAD_EMI_CLK__EMI_CLK | MUX_CONFIG_EMI, - MX28_PAD_EMI_DQS0__EMI_DQS0 | MUX_CONFIG_EMI, - MX28_PAD_EMI_DQS1__EMI_DQS1 | MUX_CONFIG_EMI, - MX28_PAD_EMI_DDR_OPEN__EMI_DDR_OPEN | MUX_CONFIG_EMI, - - MX28_PAD_EMI_A00__EMI_ADDR0 | MUX_CONFIG_EMI, - MX28_PAD_EMI_A01__EMI_ADDR1 | MUX_CONFIG_EMI, - MX28_PAD_EMI_A02__EMI_ADDR2 | MUX_CONFIG_EMI, - MX28_PAD_EMI_A03__EMI_ADDR3 | MUX_CONFIG_EMI, - MX28_PAD_EMI_A04__EMI_ADDR4 | MUX_CONFIG_EMI, - MX28_PAD_EMI_A05__EMI_ADDR5 | MUX_CONFIG_EMI, - MX28_PAD_EMI_A06__EMI_ADDR6 | MUX_CONFIG_EMI, - MX28_PAD_EMI_A07__EMI_ADDR7 | MUX_CONFIG_EMI, - MX28_PAD_EMI_A08__EMI_ADDR8 | MUX_CONFIG_EMI, - MX28_PAD_EMI_A09__EMI_ADDR9 | MUX_CONFIG_EMI, - MX28_PAD_EMI_A10__EMI_ADDR10 | MUX_CONFIG_EMI, - MX28_PAD_EMI_A11__EMI_ADDR11 | MUX_CONFIG_EMI, - MX28_PAD_EMI_A12__EMI_ADDR12 | MUX_CONFIG_EMI, - MX28_PAD_EMI_A13__EMI_ADDR13 | MUX_CONFIG_EMI, - MX28_PAD_EMI_A14__EMI_ADDR14 | MUX_CONFIG_EMI, - MX28_PAD_EMI_BA0__EMI_BA0 | MUX_CONFIG_EMI, - MX28_PAD_EMI_BA1__EMI_BA1 | MUX_CONFIG_EMI, - MX28_PAD_EMI_BA2__EMI_BA2 | MUX_CONFIG_EMI, - MX28_PAD_EMI_CASN__EMI_CASN | MUX_CONFIG_EMI, - MX28_PAD_EMI_RASN__EMI_RASN | MUX_CONFIG_EMI, - MX28_PAD_EMI_WEN__EMI_WEN | MUX_CONFIG_EMI, - MX28_PAD_EMI_CE0N__EMI_CE0N | MUX_CONFIG_EMI, - MX28_PAD_EMI_CE1N__EMI_CE1N | MUX_CONFIG_EMI, - MX28_PAD_EMI_CKE__EMI_CKE | MUX_CONFIG_EMI, - - /* SPI2 (for flash) */ - MX28_PAD_SSP2_SCK__SSP2_SCK | MUX_CONFIG_SSP2, - MX28_PAD_SSP2_MOSI__SSP2_CMD | MUX_CONFIG_SSP2, - MX28_PAD_SSP2_MISO__SSP2_D0 | MUX_CONFIG_SSP2, - MX28_PAD_SSP2_SS0__SSP2_D3 | - (MXS_PAD_3V3 | MXS_PAD_8MA | MXS_PAD_PULLUP), -}; - -void board_init_ll(void) -{ - mxs_iomux_setup_multiple_pads(iomux_setup, ARRAY_SIZE(iomux_setup)); - mx28_power_init(); - mx28_mem_init(); - mx28_power_wait_pswitch(); -} - -/* Support aparatus */ -inline void board_init_f(unsigned long bootflag) -{ - for (;;) - ; -} - -inline void board_init_r(gd_t *id, ulong dest_addr) -{ - for (;;) - ; -} - -inline int printf(const char *fmt, ...) -{ - return 0; -} - -inline void __coloured_LED_init(void) {} -inline void __red_LED_on(void) {} -void coloured_LED_init(void) - __attribute__((weak, alias("__coloured_LED_init"))); -void red_LED_on(void) - __attribute__((weak, alias("__red_LED_on"))); -void hang(void) __attribute__ ((noreturn)); -void hang(void) -{ - for (;;) - ; -} diff --git a/board/denx/m28evk/power_init.c b/board/denx/m28evk/power_init.c deleted file mode 100644 index 27322b4ec1..0000000000 --- a/board/denx/m28evk/power_init.c +++ /dev/null @@ -1,913 +0,0 @@ -/* - * Freescale i.MX28 Boot PMIC init - * - * Copyright (C) 2011 Marek Vasut - * on behalf of DENX Software Engineering GmbH - * - * See file CREDITS for list of people who contributed to this - * project. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation; either version 2 of - * the License, or (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, - * MA 02111-1307 USA - */ - -#include -#include -#include -#include - -#include "m28_init.h" - -void mx28_power_clock2xtal(void) -{ - struct mx28_clkctrl_regs *clkctrl_regs = - (struct mx28_clkctrl_regs *)MXS_CLKCTRL_BASE; - - /* Set XTAL as CPU reference clock */ - writel(CLKCTRL_CLKSEQ_BYPASS_CPU, - &clkctrl_regs->hw_clkctrl_clkseq_set); -} - -void mx28_power_clock2pll(void) -{ - struct mx28_clkctrl_regs *clkctrl_regs = - (struct mx28_clkctrl_regs *)MXS_CLKCTRL_BASE; - - writel(CLKCTRL_PLL0CTRL0_POWER, - &clkctrl_regs->hw_clkctrl_pll0ctrl0_set); - early_delay(100); - writel(CLKCTRL_CLKSEQ_BYPASS_CPU, - &clkctrl_regs->hw_clkctrl_clkseq_clr); -} - -void mx28_power_clear_auto_restart(void) -{ - struct mx28_rtc_regs *rtc_regs = - (struct mx28_rtc_regs *)MXS_RTC_BASE; - - writel(RTC_CTRL_SFTRST, &rtc_regs->hw_rtc_ctrl_clr); - while (readl(&rtc_regs->hw_rtc_ctrl) & RTC_CTRL_SFTRST) - ; - - writel(RTC_CTRL_CLKGATE, &rtc_regs->hw_rtc_ctrl_clr); - while (readl(&rtc_regs->hw_rtc_ctrl) & RTC_CTRL_CLKGATE) - ; - - /* - * Due to the hardware design bug of mx28 EVK-A - * we need to set the AUTO_RESTART bit. - */ - if (readl(&rtc_regs->hw_rtc_persistent0) & RTC_PERSISTENT0_AUTO_RESTART) - return; - - while (readl(&rtc_regs->hw_rtc_stat) & RTC_STAT_NEW_REGS_MASK) - ; - - setbits_le32(&rtc_regs->hw_rtc_persistent0, - RTC_PERSISTENT0_AUTO_RESTART); - writel(RTC_CTRL_FORCE_UPDATE, &rtc_regs->hw_rtc_ctrl_set); - writel(RTC_CTRL_FORCE_UPDATE, &rtc_regs->hw_rtc_ctrl_clr); - while (readl(&rtc_regs->hw_rtc_stat) & RTC_STAT_NEW_REGS_MASK) - ; - while (readl(&rtc_regs->hw_rtc_stat) & RTC_STAT_STALE_REGS_MASK) - ; -} - -void mx28_power_set_linreg(void) -{ - struct mx28_power_regs *power_regs = - (struct mx28_power_regs *)MXS_POWER_BASE; - - /* Set linear regulator 25mV below switching converter */ - clrsetbits_le32(&power_regs->hw_power_vdddctrl, - POWER_VDDDCTRL_LINREG_OFFSET_MASK, - POWER_VDDDCTRL_LINREG_OFFSET_1STEPS_BELOW); - - clrsetbits_le32(&power_regs->hw_power_vddactrl, - POWER_VDDACTRL_LINREG_OFFSET_MASK, - POWER_VDDACTRL_LINREG_OFFSET_1STEPS_BELOW); - - clrsetbits_le32(&power_regs->hw_power_vddioctrl, - POWER_VDDIOCTRL_LINREG_OFFSET_MASK, - POWER_VDDIOCTRL_LINREG_OFFSET_1STEPS_BELOW); -} - -void mx28_power_setup_5v_detect(void) -{ - struct mx28_power_regs *power_regs = - (struct mx28_power_regs *)MXS_POWER_BASE; - - /* Start 5V detection */ - clrsetbits_le32(&power_regs->hw_power_5vctrl, - POWER_5VCTRL_VBUSVALID_TRSH_MASK, - POWER_5VCTRL_VBUSVALID_TRSH_4V4 | - POWER_5VCTRL_PWRUP_VBUS_CMPS); -} - -void mx28_src_power_init(void) -{ - struct mx28_power_regs *power_regs = - (struct mx28_power_regs *)MXS_POWER_BASE; - - /* Improve efficieny and reduce transient ripple */ - writel(POWER_LOOPCTRL_TOGGLE_DIF | POWER_LOOPCTRL_EN_CM_HYST | - POWER_LOOPCTRL_EN_DF_HYST, &power_regs->hw_power_loopctrl_set); - - clrsetbits_le32(&power_regs->hw_power_dclimits, - POWER_DCLIMITS_POSLIMIT_BUCK_MASK, - 0x30 << POWER_DCLIMITS_POSLIMIT_BUCK_OFFSET); - - setbits_le32(&power_regs->hw_power_battmonitor, - POWER_BATTMONITOR_EN_BATADJ); - - /* Increase the RCSCALE level for quick DCDC response to dynamic load */ - clrsetbits_le32(&power_regs->hw_power_loopctrl, - POWER_LOOPCTRL_EN_RCSCALE_MASK, - POWER_LOOPCTRL_RCSCALE_THRESH | - POWER_LOOPCTRL_EN_RCSCALE_8X); - - clrsetbits_le32(&power_regs->hw_power_minpwr, - POWER_MINPWR_HALFFETS, POWER_MINPWR_DOUBLE_FETS); - - /* 5V to battery handoff ... FIXME */ - setbits_le32(&power_regs->hw_power_5vctrl, POWER_5VCTRL_DCDC_XFER); - early_delay(30); - clrbits_le32(&power_regs->hw_power_5vctrl, POWER_5VCTRL_DCDC_XFER); -} - -void mx28_power_init_4p2_params(void) -{ - struct mx28_power_regs *power_regs = - (struct mx28_power_regs *)MXS_POWER_BASE; - - /* Setup 4P2 parameters */ - clrsetbits_le32(&power_regs->hw_power_dcdc4p2, - POWER_DCDC4P2_CMPTRIP_MASK | POWER_DCDC4P2_TRG_MASK, - POWER_DCDC4P2_TRG_4V2 | (31 << POWER_DCDC4P2_CMPTRIP_OFFSET)); - - clrsetbits_le32(&power_regs->hw_power_5vctrl, - POWER_5VCTRL_HEADROOM_ADJ_MASK, - 0x4 << POWER_5VCTRL_HEADROOM_ADJ_OFFSET); - - clrsetbits_le32(&power_regs->hw_power_dcdc4p2, - POWER_DCDC4P2_DROPOUT_CTRL_MASK, - POWER_DCDC4P2_DROPOUT_CTRL_100MV | - POWER_DCDC4P2_DROPOUT_CTRL_SRC_SEL); - - clrsetbits_le32(&power_regs->hw_power_5vctrl, - POWER_5VCTRL_CHARGE_4P2_ILIMIT_MASK, - 0x3f << POWER_5VCTRL_CHARGE_4P2_ILIMIT_OFFSET); -} - -void mx28_enable_4p2_dcdc_input(int xfer) -{ - struct mx28_power_regs *power_regs = - (struct mx28_power_regs *)MXS_POWER_BASE; - uint32_t tmp, vbus_thresh, vbus_5vdetect, pwd_bo; - uint32_t prev_5v_brnout, prev_5v_droop; - - prev_5v_brnout = readl(&power_regs->hw_power_5vctrl) & - POWER_5VCTRL_PWDN_5VBRNOUT; - prev_5v_droop = readl(&power_regs->hw_power_ctrl) & - POWER_CTRL_ENIRQ_VDD5V_DROOP; - - clrbits_le32(&power_regs->hw_power_5vctrl, POWER_5VCTRL_PWDN_5VBRNOUT); - writel(POWER_RESET_UNLOCK_KEY | POWER_RESET_PWD_OFF, - &power_regs->hw_power_reset); - - clrbits_le32(&power_regs->hw_power_ctrl, POWER_CTRL_ENIRQ_VDD5V_DROOP); - - if (xfer && (readl(&power_regs->hw_power_5vctrl) & - POWER_5VCTRL_ENABLE_DCDC)) { - return; - } - - /* - * Recording orignal values that will be modified temporarlily - * to handle a chip bug. See chip errata for CQ ENGR00115837 - */ - tmp = readl(&power_regs->hw_power_5vctrl); - vbus_thresh = tmp & POWER_5VCTRL_VBUSVALID_TRSH_MASK; - vbus_5vdetect = tmp & POWER_5VCTRL_VBUSVALID_5VDETECT; - - pwd_bo = readl(&power_regs->hw_power_minpwr) & POWER_MINPWR_PWD_BO; - - /* - * Disable mechanisms that get erroneously tripped by when setting - * the DCDC4P2 EN_DCDC - */ - clrbits_le32(&power_regs->hw_power_5vctrl, - POWER_5VCTRL_VBUSVALID_5VDETECT | - POWER_5VCTRL_VBUSVALID_TRSH_MASK); - - writel(POWER_MINPWR_PWD_BO, &power_regs->hw_power_minpwr_set); - - if (xfer) { - setbits_le32(&power_regs->hw_power_5vctrl, - POWER_5VCTRL_DCDC_XFER); - early_delay(20); - clrbits_le32(&power_regs->hw_power_5vctrl, - POWER_5VCTRL_DCDC_XFER); - - setbits_le32(&power_regs->hw_power_5vctrl, - POWER_5VCTRL_ENABLE_DCDC); - } else { - setbits_le32(&power_regs->hw_power_dcdc4p2, - POWER_DCDC4P2_ENABLE_DCDC); - } - - early_delay(25); - - clrsetbits_le32(&power_regs->hw_power_5vctrl, - POWER_5VCTRL_VBUSVALID_TRSH_MASK, vbus_thresh); - - if (vbus_5vdetect) - writel(vbus_5vdetect, &power_regs->hw_power_5vctrl_set); - - if (!pwd_bo) - clrbits_le32(&power_regs->hw_power_minpwr, POWER_MINPWR_PWD_BO); - - while (readl(&power_regs->hw_power_ctrl) & POWER_CTRL_VBUS_VALID_IRQ) - clrbits_le32(&power_regs->hw_power_ctrl, - POWER_CTRL_VBUS_VALID_IRQ); - - if (prev_5v_brnout) { - writel(POWER_5VCTRL_PWDN_5VBRNOUT, - &power_regs->hw_power_5vctrl_set); - writel(POWER_RESET_UNLOCK_KEY, - &power_regs->hw_power_reset); - } else { - writel(POWER_5VCTRL_PWDN_5VBRNOUT, - &power_regs->hw_power_5vctrl_clr); - writel(POWER_RESET_UNLOCK_KEY | POWER_RESET_PWD_OFF, - &power_regs->hw_power_reset); - } - - while (readl(&power_regs->hw_power_ctrl) & POWER_CTRL_VDD5V_DROOP_IRQ) - clrbits_le32(&power_regs->hw_power_ctrl, - POWER_CTRL_VDD5V_DROOP_IRQ); - - if (prev_5v_droop) - clrbits_le32(&power_regs->hw_power_ctrl, - POWER_CTRL_ENIRQ_VDD5V_DROOP); - else - setbits_le32(&power_regs->hw_power_ctrl, - POWER_CTRL_ENIRQ_VDD5V_DROOP); -} - -void mx28_power_init_4p2_regulator(void) -{ - struct mx28_power_regs *power_regs = - (struct mx28_power_regs *)MXS_POWER_BASE; - uint32_t tmp, tmp2; - - setbits_le32(&power_regs->hw_power_dcdc4p2, POWER_DCDC4P2_ENABLE_4P2); - - writel(POWER_CHARGE_ENABLE_LOAD, &power_regs->hw_power_charge_set); - - writel(POWER_5VCTRL_CHARGE_4P2_ILIMIT_MASK, - &power_regs->hw_power_5vctrl_clr); - clrbits_le32(&power_regs->hw_power_dcdc4p2, POWER_DCDC4P2_TRG_MASK); - - /* Power up the 4p2 rail and logic/control */ - writel(POWER_5VCTRL_PWD_CHARGE_4P2_MASK, - &power_regs->hw_power_5vctrl_clr); - - /* - * Start charging up the 4p2 capacitor. We ramp of this charge - * gradually to avoid large inrush current from the 5V cable which can - * cause transients/problems - */ - mx28_enable_4p2_dcdc_input(0); - - if (readl(&power_regs->hw_power_ctrl) & POWER_CTRL_VBUS_VALID_IRQ) { - /* - * If we arrived here, we were unable to recover from mx23 chip - * errata 5837. 4P2 is disabled and sufficient battery power is - * not present. Exiting to not enable DCDC power during 5V - * connected state. - */ - clrbits_le32(&power_regs->hw_power_dcdc4p2, - POWER_DCDC4P2_ENABLE_DCDC); - writel(POWER_5VCTRL_PWD_CHARGE_4P2_MASK, - &power_regs->hw_power_5vctrl_set); - hang(); - } - - /* - * Here we set the 4p2 brownout level to something very close to 4.2V. - * We then check the brownout status. If the brownout status is false, - * the voltage is already close to the target voltage of 4.2V so we - * can go ahead and set the 4P2 current limit to our max target limit. - * If the brownout status is true, we need to ramp us the current limit - * so that we don't cause large inrush current issues. We step up the - * current limit until the brownout status is false or until we've - * reached our maximum defined 4p2 current limit. - */ - clrsetbits_le32(&power_regs->hw_power_dcdc4p2, - POWER_DCDC4P2_BO_MASK, - 22 << POWER_DCDC4P2_BO_OFFSET); /* 4.15V */ - - if (!(readl(&power_regs->hw_power_sts) & POWER_STS_DCDC_4P2_BO)) { - setbits_le32(&power_regs->hw_power_5vctrl, - 0x3f << POWER_5VCTRL_CHARGE_4P2_ILIMIT_OFFSET); - } else { - tmp = (readl(&power_regs->hw_power_5vctrl) & - POWER_5VCTRL_CHARGE_4P2_ILIMIT_MASK) >> - POWER_5VCTRL_CHARGE_4P2_ILIMIT_OFFSET; - while (tmp < 0x3f) { - if (!(readl(&power_regs->hw_power_sts) & - POWER_STS_DCDC_4P2_BO)) { - tmp = readl(&power_regs->hw_power_5vctrl); - tmp |= POWER_5VCTRL_CHARGE_4P2_ILIMIT_MASK; - early_delay(100); - writel(tmp, &power_regs->hw_power_5vctrl); - break; - } else { - tmp++; - tmp2 = readl(&power_regs->hw_power_5vctrl); - tmp2 &= ~POWER_5VCTRL_CHARGE_4P2_ILIMIT_MASK; - tmp2 |= tmp << - POWER_5VCTRL_CHARGE_4P2_ILIMIT_OFFSET; - writel(tmp2, &power_regs->hw_power_5vctrl); - early_delay(100); - } - } - } - - clrbits_le32(&power_regs->hw_power_dcdc4p2, POWER_DCDC4P2_BO_MASK); - writel(POWER_CTRL_DCDC4P2_BO_IRQ, &power_regs->hw_power_ctrl_clr); -} - -void mx28_power_init_dcdc_4p2_source(void) -{ - struct mx28_power_regs *power_regs = - (struct mx28_power_regs *)MXS_POWER_BASE; - - if (!(readl(&power_regs->hw_power_dcdc4p2) & - POWER_DCDC4P2_ENABLE_DCDC)) { - hang(); - } - - mx28_enable_4p2_dcdc_input(1); - - if (readl(&power_regs->hw_power_ctrl) & POWER_CTRL_VBUS_VALID_IRQ) { - clrbits_le32(&power_regs->hw_power_dcdc4p2, - POWER_DCDC4P2_ENABLE_DCDC); - writel(POWER_5VCTRL_ENABLE_DCDC, - &power_regs->hw_power_5vctrl_clr); - writel(POWER_5VCTRL_PWD_CHARGE_4P2_MASK, - &power_regs->hw_power_5vctrl_set); - } -} - -void mx28_power_enable_4p2(void) -{ - struct mx28_power_regs *power_regs = - (struct mx28_power_regs *)MXS_POWER_BASE; - uint32_t vdddctrl, vddactrl, vddioctrl; - uint32_t tmp; - - vdddctrl = readl(&power_regs->hw_power_vdddctrl); - vddactrl = readl(&power_regs->hw_power_vddactrl); - vddioctrl = readl(&power_regs->hw_power_vddioctrl); - - setbits_le32(&power_regs->hw_power_vdddctrl, - POWER_VDDDCTRL_DISABLE_FET | POWER_VDDDCTRL_ENABLE_LINREG | - POWER_VDDDCTRL_PWDN_BRNOUT); - - setbits_le32(&power_regs->hw_power_vddactrl, - POWER_VDDACTRL_DISABLE_FET | POWER_VDDACTRL_ENABLE_LINREG | - POWER_VDDACTRL_PWDN_BRNOUT); - - setbits_le32(&power_regs->hw_power_vddioctrl, - POWER_VDDIOCTRL_DISABLE_FET | POWER_VDDIOCTRL_PWDN_BRNOUT); - - mx28_power_init_4p2_params(); - mx28_power_init_4p2_regulator(); - - /* Shutdown battery (none present) */ - clrbits_le32(&power_regs->hw_power_dcdc4p2, POWER_DCDC4P2_BO_MASK); - writel(POWER_CTRL_DCDC4P2_BO_IRQ, &power_regs->hw_power_ctrl_clr); - writel(POWER_CTRL_ENIRQ_DCDC4P2_BO, &power_regs->hw_power_ctrl_clr); - - mx28_power_init_dcdc_4p2_source(); - - writel(vdddctrl, &power_regs->hw_power_vdddctrl); - early_delay(20); - writel(vddactrl, &power_regs->hw_power_vddactrl); - early_delay(20); - writel(vddioctrl, &power_regs->hw_power_vddioctrl); - - /* - * Check if FET is enabled on either powerout and if so, - * disable load. - */ - tmp = 0; - tmp |= !(readl(&power_regs->hw_power_vdddctrl) & - POWER_VDDDCTRL_DISABLE_FET); - tmp |= !(readl(&power_regs->hw_power_vddactrl) & - POWER_VDDACTRL_DISABLE_FET); - tmp |= !(readl(&power_regs->hw_power_vddioctrl) & - POWER_VDDIOCTRL_DISABLE_FET); - if (tmp) - writel(POWER_CHARGE_ENABLE_LOAD, - &power_regs->hw_power_charge_clr); -} - -void mx28_boot_valid_5v(void) -{ - struct mx28_power_regs *power_regs = - (struct mx28_power_regs *)MXS_POWER_BASE; - - /* - * Use VBUSVALID level instead of VDD5V_GT_VDDIO level to trigger a 5V - * disconnect event. FIXME - */ - writel(POWER_5VCTRL_VBUSVALID_5VDETECT, - &power_regs->hw_power_5vctrl_set); - - /* Configure polarity to check for 5V disconnection. */ - writel(POWER_CTRL_POLARITY_VBUSVALID | - POWER_CTRL_POLARITY_VDD5V_GT_VDDIO, - &power_regs->hw_power_ctrl_clr); - - writel(POWER_CTRL_VBUS_VALID_IRQ | POWER_CTRL_VDD5V_GT_VDDIO_IRQ, - &power_regs->hw_power_ctrl_clr); - - mx28_power_enable_4p2(); -} - -void mx28_powerdown(void) -{ - struct mx28_power_regs *power_regs = - (struct mx28_power_regs *)MXS_POWER_BASE; - writel(POWER_RESET_UNLOCK_KEY, &power_regs->hw_power_reset); - writel(POWER_RESET_UNLOCK_KEY | POWER_RESET_PWD_OFF, - &power_regs->hw_power_reset); -} - -void mx28_handle_5v_conflict(void) -{ - struct mx28_power_regs *power_regs = - (struct mx28_power_regs *)MXS_POWER_BASE; - uint32_t tmp; - - setbits_le32(&power_regs->hw_power_vddioctrl, - POWER_VDDIOCTRL_BO_OFFSET_MASK); - - for (;;) { - tmp = readl(&power_regs->hw_power_sts); - - if (tmp & POWER_STS_VDDIO_BO) { - mx28_powerdown(); - break; - } - - if (tmp & POWER_STS_VDD5V_GT_VDDIO) { - mx28_boot_valid_5v(); - break; - } else { - mx28_powerdown(); - break; - } - } -} - -int mx28_get_batt_volt(void) -{ - struct mx28_power_regs *power_regs = - (struct mx28_power_regs *)MXS_POWER_BASE; - uint32_t volt = readl(&power_regs->hw_power_battmonitor); - volt &= POWER_BATTMONITOR_BATT_VAL_MASK; - volt >>= POWER_BATTMONITOR_BATT_VAL_OFFSET; - volt *= 8; - return volt; -} - -int mx28_is_batt_ready(void) -{ - return (mx28_get_batt_volt() >= 3600); -} - -void mx28_5v_boot(void) -{ - struct mx28_power_regs *power_regs = - (struct mx28_power_regs *)MXS_POWER_BASE; - - /* - * NOTE: In original IMX-Bootlets, this also checks for VBUSVALID, - * but their implementation always returns 1 so we omit it here. - */ - if (readl(&power_regs->hw_power_sts) & POWER_STS_VDD5V_GT_VDDIO) { - mx28_boot_valid_5v(); - return; - } - - early_delay(1000); - if (readl(&power_regs->hw_power_sts) & POWER_STS_VDD5V_GT_VDDIO) { - mx28_boot_valid_5v(); - return; - } - - mx28_handle_5v_conflict(); -} - -void mx28_init_batt_bo(void) -{ - struct mx28_power_regs *power_regs = - (struct mx28_power_regs *)MXS_POWER_BASE; - - /* Brownout at 3V */ - clrsetbits_le32(&power_regs->hw_power_battmonitor, - POWER_BATTMONITOR_BRWNOUT_LVL_MASK, - 15 << POWER_BATTMONITOR_BRWNOUT_LVL_OFFSET); - - writel(POWER_CTRL_BATT_BO_IRQ, &power_regs->hw_power_ctrl_clr); - writel(POWER_CTRL_ENIRQ_BATT_BO, &power_regs->hw_power_ctrl_clr); -} - -void mx28_switch_vddd_to_dcdc_source(void) -{ - struct mx28_power_regs *power_regs = - (struct mx28_power_regs *)MXS_POWER_BASE; - - clrsetbits_le32(&power_regs->hw_power_vdddctrl, - POWER_VDDDCTRL_LINREG_OFFSET_MASK, - POWER_VDDDCTRL_LINREG_OFFSET_1STEPS_BELOW); - - clrbits_le32(&power_regs->hw_power_vdddctrl, - POWER_VDDDCTRL_DISABLE_FET | POWER_VDDDCTRL_ENABLE_LINREG | - POWER_VDDDCTRL_DISABLE_STEPPING); -} - -int mx28_is_batt_good(void) -{ - struct mx28_power_regs *power_regs = - (struct mx28_power_regs *)MXS_POWER_BASE; - uint32_t volt; - - volt = readl(&power_regs->hw_power_battmonitor); - volt &= POWER_BATTMONITOR_BATT_VAL_MASK; - volt >>= POWER_BATTMONITOR_BATT_VAL_OFFSET; - volt *= 8; - - if ((volt >= 2400) && (volt <= 4300)) - return 1; - - clrsetbits_le32(&power_regs->hw_power_5vctrl, - POWER_5VCTRL_CHARGE_4P2_ILIMIT_MASK, - 0x3 << POWER_5VCTRL_CHARGE_4P2_ILIMIT_OFFSET); - writel(POWER_5VCTRL_PWD_CHARGE_4P2_MASK, - &power_regs->hw_power_5vctrl_clr); - - clrsetbits_le32(&power_regs->hw_power_charge, - POWER_CHARGE_STOP_ILIMIT_MASK | POWER_CHARGE_BATTCHRG_I_MASK, - POWER_CHARGE_STOP_ILIMIT_10MA | 0x3); - - writel(POWER_CHARGE_PWD_BATTCHRG, &power_regs->hw_power_charge_clr); - writel(POWER_5VCTRL_PWD_CHARGE_4P2_MASK, - &power_regs->hw_power_5vctrl_clr); - - early_delay(500000); - - volt = readl(&power_regs->hw_power_battmonitor); - volt &= POWER_BATTMONITOR_BATT_VAL_MASK; - volt >>= POWER_BATTMONITOR_BATT_VAL_OFFSET; - volt *= 8; - - if (volt >= 3500) - return 0; - - if (volt >= 2400) - return 1; - - writel(POWER_CHARGE_STOP_ILIMIT_MASK | POWER_CHARGE_BATTCHRG_I_MASK, - &power_regs->hw_power_charge_clr); - writel(POWER_CHARGE_PWD_BATTCHRG, &power_regs->hw_power_charge_set); - - return 0; -} - -void mx28_power_configure_power_source(void) -{ - mx28_src_power_init(); - - mx28_5v_boot(); - mx28_power_clock2pll(); - - mx28_init_batt_bo(); - mx28_switch_vddd_to_dcdc_source(); -} - -void mx28_enable_output_rail_protection(void) -{ - struct mx28_power_regs *power_regs = - (struct mx28_power_regs *)MXS_POWER_BASE; - - writel(POWER_CTRL_VDDD_BO_IRQ | POWER_CTRL_VDDA_BO_IRQ | - POWER_CTRL_VDDIO_BO_IRQ, &power_regs->hw_power_ctrl_clr); - - setbits_le32(&power_regs->hw_power_vdddctrl, - POWER_VDDDCTRL_PWDN_BRNOUT); - - setbits_le32(&power_regs->hw_power_vddactrl, - POWER_VDDACTRL_PWDN_BRNOUT); - - setbits_le32(&power_regs->hw_power_vddioctrl, - POWER_VDDIOCTRL_PWDN_BRNOUT); -} - -int mx28_get_vddio_power_source_off(void) -{ - struct mx28_power_regs *power_regs = - (struct mx28_power_regs *)MXS_POWER_BASE; - uint32_t tmp; - - if (readl(&power_regs->hw_power_sts) & POWER_STS_VDD5V_GT_VDDIO) { - tmp = readl(&power_regs->hw_power_vddioctrl); - if (tmp & POWER_VDDIOCTRL_DISABLE_FET) { - if ((tmp & POWER_VDDIOCTRL_LINREG_OFFSET_MASK) == - POWER_VDDDCTRL_LINREG_OFFSET_0STEPS) { - return 1; - } - } - - if (!(readl(&power_regs->hw_power_5vctrl) & - POWER_5VCTRL_ENABLE_DCDC)) { - if ((tmp & POWER_VDDIOCTRL_LINREG_OFFSET_MASK) == - POWER_VDDDCTRL_LINREG_OFFSET_0STEPS) { - return 1; - } - } - } - - return 0; - -} - -int mx28_get_vddd_power_source_off(void) -{ - struct mx28_power_regs *power_regs = - (struct mx28_power_regs *)MXS_POWER_BASE; - uint32_t tmp; - - tmp = readl(&power_regs->hw_power_vdddctrl); - if (tmp & POWER_VDDDCTRL_DISABLE_FET) { - if ((tmp & POWER_VDDDCTRL_LINREG_OFFSET_MASK) == - POWER_VDDDCTRL_LINREG_OFFSET_0STEPS) { - return 1; - } - } - - if (readl(&power_regs->hw_power_sts) & POWER_STS_VDD5V_GT_VDDIO) { - if (!(readl(&power_regs->hw_power_5vctrl) & - POWER_5VCTRL_ENABLE_DCDC)) { - return 1; - } - } - - if (!(tmp & POWER_VDDDCTRL_ENABLE_LINREG)) { - if ((tmp & POWER_VDDDCTRL_LINREG_OFFSET_MASK) == - POWER_VDDDCTRL_LINREG_OFFSET_1STEPS_BELOW) { - return 1; - } - } - - return 0; -} - -void mx28_power_set_vddio(uint32_t new_target, uint32_t new_brownout) -{ - struct mx28_power_regs *power_regs = - (struct mx28_power_regs *)MXS_POWER_BASE; - uint32_t cur_target, diff, bo_int = 0; - uint32_t powered_by_linreg = 0; - - new_brownout = new_target - new_brownout; - - cur_target = readl(&power_regs->hw_power_vddioctrl); - cur_target &= POWER_VDDIOCTRL_TRG_MASK; - cur_target *= 50; /* 50 mV step*/ - cur_target += 2800; /* 2800 mV lowest */ - - powered_by_linreg = mx28_get_vddio_power_source_off(); - if (new_target > cur_target) { - - if (powered_by_linreg) { - bo_int = readl(&power_regs->hw_power_vddioctrl); - clrbits_le32(&power_regs->hw_power_vddioctrl, - POWER_CTRL_ENIRQ_VDDIO_BO); - } - - setbits_le32(&power_regs->hw_power_vddioctrl, - POWER_VDDIOCTRL_BO_OFFSET_MASK); - do { - if (new_target - cur_target > 100) - diff = cur_target + 100; - else - diff = new_target; - - diff -= 2800; - diff /= 50; - - clrsetbits_le32(&power_regs->hw_power_vddioctrl, - POWER_VDDIOCTRL_TRG_MASK, diff); - - if (powered_by_linreg) - early_delay(1500); - else { - while (!(readl(&power_regs->hw_power_sts) & - POWER_STS_DC_OK)) - ; - - } - - cur_target = readl(&power_regs->hw_power_vddioctrl); - cur_target &= POWER_VDDIOCTRL_TRG_MASK; - cur_target *= 50; /* 50 mV step*/ - cur_target += 2800; /* 2800 mV lowest */ - } while (new_target > cur_target); - - if (powered_by_linreg) { - writel(POWER_CTRL_VDDIO_BO_IRQ, - &power_regs->hw_power_ctrl_clr); - if (bo_int & POWER_CTRL_ENIRQ_VDDIO_BO) - setbits_le32(&power_regs->hw_power_vddioctrl, - POWER_CTRL_ENIRQ_VDDIO_BO); - } - } else { - do { - if (cur_target - new_target > 100) - diff = cur_target - 100; - else - diff = new_target; - - diff -= 2800; - diff /= 50; - - clrsetbits_le32(&power_regs->hw_power_vddioctrl, - POWER_VDDIOCTRL_TRG_MASK, diff); - - if (powered_by_linreg) - early_delay(1500); - else { - while (!(readl(&power_regs->hw_power_sts) & - POWER_STS_DC_OK)) - ; - - } - - cur_target = readl(&power_regs->hw_power_vddioctrl); - cur_target &= POWER_VDDIOCTRL_TRG_MASK; - cur_target *= 50; /* 50 mV step*/ - cur_target += 2800; /* 2800 mV lowest */ - } while (new_target < cur_target); - } - - clrsetbits_le32(&power_regs->hw_power_vddioctrl, - POWER_VDDDCTRL_BO_OFFSET_MASK, - new_brownout << POWER_VDDDCTRL_BO_OFFSET_OFFSET); -} - -void mx28_power_set_vddd(uint32_t new_target, uint32_t new_brownout) -{ - struct mx28_power_regs *power_regs = - (struct mx28_power_regs *)MXS_POWER_BASE; - uint32_t cur_target, diff, bo_int = 0; - uint32_t powered_by_linreg = 0; - - new_brownout = new_target - new_brownout; - - cur_target = readl(&power_regs->hw_power_vdddctrl); - cur_target &= POWER_VDDDCTRL_TRG_MASK; - cur_target *= 25; /* 25 mV step*/ - cur_target += 800; /* 800 mV lowest */ - - powered_by_linreg = mx28_get_vddd_power_source_off(); - if (new_target > cur_target) { - if (powered_by_linreg) { - bo_int = readl(&power_regs->hw_power_vdddctrl); - clrbits_le32(&power_regs->hw_power_vdddctrl, - POWER_CTRL_ENIRQ_VDDD_BO); - } - - setbits_le32(&power_regs->hw_power_vdddctrl, - POWER_VDDDCTRL_BO_OFFSET_MASK); - - do { - if (new_target - cur_target > 100) - diff = cur_target + 100; - else - diff = new_target; - - diff -= 800; - diff /= 25; - - clrsetbits_le32(&power_regs->hw_power_vdddctrl, - POWER_VDDDCTRL_TRG_MASK, diff); - - if (powered_by_linreg) - early_delay(1500); - else { - while (!(readl(&power_regs->hw_power_sts) & - POWER_STS_DC_OK)) - ; - - } - - cur_target = readl(&power_regs->hw_power_vdddctrl); - cur_target &= POWER_VDDDCTRL_TRG_MASK; - cur_target *= 25; /* 25 mV step*/ - cur_target += 800; /* 800 mV lowest */ - } while (new_target > cur_target); - - if (powered_by_linreg) { - writel(POWER_CTRL_VDDD_BO_IRQ, - &power_regs->hw_power_ctrl_clr); - if (bo_int & POWER_CTRL_ENIRQ_VDDD_BO) - setbits_le32(&power_regs->hw_power_vdddctrl, - POWER_CTRL_ENIRQ_VDDD_BO); - } - } else { - do { - if (cur_target - new_target > 100) - diff = cur_target - 100; - else - diff = new_target; - - diff -= 800; - diff /= 25; - - clrsetbits_le32(&power_regs->hw_power_vdddctrl, - POWER_VDDDCTRL_TRG_MASK, diff); - - if (powered_by_linreg) - early_delay(1500); - else { - while (!(readl(&power_regs->hw_power_sts) & - POWER_STS_DC_OK)) - ; - - } - - cur_target = readl(&power_regs->hw_power_vdddctrl); - cur_target &= POWER_VDDDCTRL_TRG_MASK; - cur_target *= 25; /* 25 mV step*/ - cur_target += 800; /* 800 mV lowest */ - } while (new_target < cur_target); - } - - clrsetbits_le32(&power_regs->hw_power_vdddctrl, - POWER_VDDDCTRL_BO_OFFSET_MASK, - new_brownout << POWER_VDDDCTRL_BO_OFFSET_OFFSET); -} - -void mx28_power_init(void) -{ - struct mx28_power_regs *power_regs = - (struct mx28_power_regs *)MXS_POWER_BASE; - - mx28_power_clock2xtal(); - mx28_power_clear_auto_restart(); - mx28_power_set_linreg(); - mx28_power_setup_5v_detect(); - mx28_power_configure_power_source(); - mx28_enable_output_rail_protection(); - - mx28_power_set_vddio(3300, 3150); - - mx28_power_set_vddd(1350, 1200); - - writel(POWER_CTRL_VDDD_BO_IRQ | POWER_CTRL_VDDA_BO_IRQ | - POWER_CTRL_VDDIO_BO_IRQ | POWER_CTRL_VDD5V_DROOP_IRQ | - POWER_CTRL_VBUS_VALID_IRQ | POWER_CTRL_BATT_BO_IRQ | - POWER_CTRL_DCDC4P2_BO_IRQ, &power_regs->hw_power_ctrl_clr); - - writel(POWER_5VCTRL_PWDN_5VBRNOUT, &power_regs->hw_power_5vctrl_set); - - early_delay(1000); -} - -#ifdef CONFIG_SPL_MX28_PSWITCH_WAIT -void mx28_power_wait_pswitch(void) -{ - struct mx28_power_regs *power_regs = - (struct mx28_power_regs *)MXS_POWER_BASE; - - while (!(readl(&power_regs->hw_power_sts) & POWER_STS_PSWITCH_MASK)) - ; -} -#endif diff --git a/board/denx/m28evk/spl_boot.c b/board/denx/m28evk/spl_boot.c new file mode 100644 index 0000000000..86d7d876da --- /dev/null +++ b/board/denx/m28evk/spl_boot.c @@ -0,0 +1,220 @@ +/* + * DENX M28 Boot setup + * + * Copyright (C) 2011 Marek Vasut + * on behalf of DENX Software Engineering GmbH + * + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + +#include +#include +#include +#include +#include +#include + +#define MUX_CONFIG_LED (MXS_PAD_3V3 | MXS_PAD_4MA | MXS_PAD_NOPULL) +#define MUX_CONFIG_LCD (MXS_PAD_3V3 | MXS_PAD_4MA) +#define MUX_CONFIG_TSC (MXS_PAD_3V3 | MXS_PAD_8MA | MXS_PAD_PULLUP) +#define MUX_CONFIG_SSP0 (MXS_PAD_3V3 | MXS_PAD_12MA | MXS_PAD_PULLUP) +#define MUX_CONFIG_SSP2 (MXS_PAD_3V3 | MXS_PAD_4MA | MXS_PAD_PULLUP) +#define MUX_CONFIG_GPMI (MXS_PAD_1V8 | MXS_PAD_4MA | MXS_PAD_NOPULL) +#define MUX_CONFIG_ENET (MXS_PAD_3V3 | MXS_PAD_4MA | MXS_PAD_PULLUP) +#define MUX_CONFIG_EMI (MXS_PAD_3V3 | MXS_PAD_12MA | MXS_PAD_NOPULL) + +const iomux_cfg_t iomux_setup[] = { + /* LED */ + MX28_PAD_ENET0_RXD3__GPIO_4_10 | MUX_CONFIG_LED, + + /* framebuffer */ + MX28_PAD_LCD_D00__LCD_D0 | MUX_CONFIG_LCD, + MX28_PAD_LCD_D01__LCD_D1 | MUX_CONFIG_LCD, + MX28_PAD_LCD_D02__LCD_D2 | MUX_CONFIG_LCD, + MX28_PAD_LCD_D03__LCD_D3 | MUX_CONFIG_LCD, + MX28_PAD_LCD_D04__LCD_D4 | MUX_CONFIG_LCD, + MX28_PAD_LCD_D05__LCD_D5 | MUX_CONFIG_LCD, + MX28_PAD_LCD_D06__LCD_D6 | MUX_CONFIG_LCD, + MX28_PAD_LCD_D07__LCD_D7 | MUX_CONFIG_LCD, + MX28_PAD_LCD_D08__LCD_D8 | MUX_CONFIG_LCD, + MX28_PAD_LCD_D09__LCD_D9 | MUX_CONFIG_LCD, + MX28_PAD_LCD_D10__LCD_D10 | MUX_CONFIG_LCD, + MX28_PAD_LCD_D11__LCD_D11 | MUX_CONFIG_LCD, + MX28_PAD_LCD_D12__LCD_D12 | MUX_CONFIG_LCD, + MX28_PAD_LCD_D13__LCD_D13 | MUX_CONFIG_LCD, + MX28_PAD_LCD_D14__LCD_D14 | MUX_CONFIG_LCD, + MX28_PAD_LCD_D15__LCD_D15 | MUX_CONFIG_LCD, + MX28_PAD_LCD_D16__LCD_D16 | MUX_CONFIG_LCD, + MX28_PAD_LCD_D17__LCD_D17 | MUX_CONFIG_LCD, + MX28_PAD_LCD_D18__LCD_D18 | MUX_CONFIG_LCD, + MX28_PAD_LCD_D19__LCD_D19 | MUX_CONFIG_LCD, + MX28_PAD_LCD_D20__LCD_D20 | MUX_CONFIG_LCD, + MX28_PAD_LCD_D21__LCD_D21 | MUX_CONFIG_LCD, + MX28_PAD_LCD_D22__LCD_D22 | MUX_CONFIG_LCD, + MX28_PAD_LCD_D23__LCD_D23 | MUX_CONFIG_LCD, + MX28_PAD_LCD_RD_E__LCD_VSYNC | MUX_CONFIG_LCD, + MX28_PAD_LCD_WR_RWN__LCD_HSYNC | MUX_CONFIG_LCD, + MX28_PAD_LCD_RS__LCD_DOTCLK | MUX_CONFIG_LCD, + MX28_PAD_LCD_CS__LCD_CS | MUX_CONFIG_LCD, + MX28_PAD_LCD_VSYNC__LCD_VSYNC | MUX_CONFIG_LCD, + MX28_PAD_LCD_HSYNC__LCD_HSYNC | MUX_CONFIG_LCD, + MX28_PAD_LCD_DOTCLK__LCD_DOTCLK | MUX_CONFIG_LCD, + MX28_PAD_LCD_ENABLE__GPIO_1_31 | MUX_CONFIG_LCD, + MX28_PAD_LCD_RESET__GPIO_3_30 | MUX_CONFIG_LCD, + + /* UART1 */ + MX28_PAD_PWM0__DUART_RX, + MX28_PAD_PWM1__DUART_TX, + MX28_PAD_AUART0_TX__DUART_RTS, + MX28_PAD_AUART0_RX__DUART_CTS, + + /* UART2 */ + MX28_PAD_AUART1_RX__AUART1_RX, + MX28_PAD_AUART1_TX__AUART1_TX, + MX28_PAD_AUART1_RTS__AUART1_RTS, + MX28_PAD_AUART1_CTS__AUART1_CTS, + + /* CAN */ + MX28_PAD_GPMI_RDY2__CAN0_TX, + MX28_PAD_GPMI_RDY3__CAN0_RX, + + /* TSC2007 */ + MX28_PAD_SAIF0_MCLK__GPIO_3_20 | MUX_CONFIG_TSC, + + /* MMC0 */ + MX28_PAD_SSP0_DATA0__SSP0_D0 | MUX_CONFIG_SSP0, + MX28_PAD_SSP0_DATA1__SSP0_D1 | MUX_CONFIG_SSP0, + MX28_PAD_SSP0_DATA2__SSP0_D2 | MUX_CONFIG_SSP0, + MX28_PAD_SSP0_DATA3__SSP0_D3 | MUX_CONFIG_SSP0, + MX28_PAD_SSP0_DATA4__SSP0_D4 | MUX_CONFIG_SSP0, + MX28_PAD_SSP0_DATA5__SSP0_D5 | MUX_CONFIG_SSP0, + MX28_PAD_SSP0_DATA6__SSP0_D6 | MUX_CONFIG_SSP0, + MX28_PAD_SSP0_DATA7__SSP0_D7 | MUX_CONFIG_SSP0, + MX28_PAD_SSP0_CMD__SSP0_CMD | MUX_CONFIG_SSP0, + MX28_PAD_SSP0_DETECT__SSP0_CARD_DETECT | + (MXS_PAD_3V3 | MXS_PAD_12MA | MXS_PAD_NOPULL), + MX28_PAD_SSP0_SCK__SSP0_SCK | + (MXS_PAD_3V3 | MXS_PAD_12MA | MXS_PAD_NOPULL), + MX28_PAD_PWM3__GPIO_3_28 | MUX_CONFIG_SSP0, /* Power .. FIXME */ + MX28_PAD_AUART2_CTS__GPIO_3_10, /* WP ... FIXME */ + + /* GPMI NAND */ + MX28_PAD_GPMI_D00__GPMI_D0 | MUX_CONFIG_GPMI, + MX28_PAD_GPMI_D01__GPMI_D1 | MUX_CONFIG_GPMI, + MX28_PAD_GPMI_D02__GPMI_D2 | MUX_CONFIG_GPMI, + MX28_PAD_GPMI_D03__GPMI_D3 | MUX_CONFIG_GPMI, + MX28_PAD_GPMI_D04__GPMI_D4 | MUX_CONFIG_GPMI, + MX28_PAD_GPMI_D05__GPMI_D5 | MUX_CONFIG_GPMI, + MX28_PAD_GPMI_D06__GPMI_D6 | MUX_CONFIG_GPMI, + MX28_PAD_GPMI_D07__GPMI_D7 | MUX_CONFIG_GPMI, + MX28_PAD_GPMI_CE0N__GPMI_CE0N | MUX_CONFIG_GPMI, + MX28_PAD_GPMI_RDY0__GPMI_READY0 | MUX_CONFIG_GPMI, + MX28_PAD_GPMI_RDN__GPMI_RDN | + (MXS_PAD_1V8 | MXS_PAD_8MA | MXS_PAD_PULLUP), + MX28_PAD_GPMI_WRN__GPMI_WRN | MUX_CONFIG_GPMI, + MX28_PAD_GPMI_ALE__GPMI_ALE | MUX_CONFIG_GPMI, + MX28_PAD_GPMI_CLE__GPMI_CLE | MUX_CONFIG_GPMI, + MX28_PAD_GPMI_RESETN__GPMI_RESETN | MUX_CONFIG_GPMI, + + /* FEC Ethernet */ + MX28_PAD_ENET0_MDC__ENET0_MDC | MUX_CONFIG_ENET, + MX28_PAD_ENET0_MDIO__ENET0_MDIO | MUX_CONFIG_ENET, + MX28_PAD_ENET0_RX_EN__ENET0_RX_EN | MUX_CONFIG_ENET, + MX28_PAD_ENET0_TX_EN__ENET0_TX_EN | MUX_CONFIG_ENET, + MX28_PAD_ENET0_RXD0__ENET0_RXD0 | MUX_CONFIG_ENET, + MX28_PAD_ENET0_RXD1__ENET0_RXD1 | MUX_CONFIG_ENET, + MX28_PAD_ENET0_TXD0__ENET0_TXD0 | MUX_CONFIG_ENET, + MX28_PAD_ENET0_TXD1__ENET0_TXD1 | MUX_CONFIG_ENET, + MX28_PAD_ENET_CLK__CLKCTRL_ENET | MUX_CONFIG_ENET, + + MX28_PAD_ENET0_COL__ENET1_TX_EN | MUX_CONFIG_ENET, + MX28_PAD_ENET0_CRS__ENET1_RX_EN | MUX_CONFIG_ENET, + MX28_PAD_ENET0_RXD2__ENET1_RXD0 | MUX_CONFIG_ENET, + MX28_PAD_ENET0_RXD3__ENET1_RXD1 | MUX_CONFIG_ENET, + MX28_PAD_ENET0_TXD2__ENET1_TXD0 | MUX_CONFIG_ENET, + MX28_PAD_ENET0_TXD3__ENET1_TXD1 | MUX_CONFIG_ENET, + + /* I2C */ + MX28_PAD_I2C0_SCL__I2C0_SCL, + MX28_PAD_I2C0_SDA__I2C0_SDA, + + /* EMI */ + MX28_PAD_EMI_D00__EMI_DATA0 | MUX_CONFIG_EMI, + MX28_PAD_EMI_D01__EMI_DATA1 | MUX_CONFIG_EMI, + MX28_PAD_EMI_D02__EMI_DATA2 | MUX_CONFIG_EMI, + MX28_PAD_EMI_D03__EMI_DATA3 | MUX_CONFIG_EMI, + MX28_PAD_EMI_D04__EMI_DATA4 | MUX_CONFIG_EMI, + MX28_PAD_EMI_D05__EMI_DATA5 | MUX_CONFIG_EMI, + MX28_PAD_EMI_D06__EMI_DATA6 | MUX_CONFIG_EMI, + MX28_PAD_EMI_D07__EMI_DATA7 | MUX_CONFIG_EMI, + MX28_PAD_EMI_D08__EMI_DATA8 | MUX_CONFIG_EMI, + MX28_PAD_EMI_D09__EMI_DATA9 | MUX_CONFIG_EMI, + MX28_PAD_EMI_D10__EMI_DATA10 | MUX_CONFIG_EMI, + MX28_PAD_EMI_D11__EMI_DATA11 | MUX_CONFIG_EMI, + MX28_PAD_EMI_D12__EMI_DATA12 | MUX_CONFIG_EMI, + MX28_PAD_EMI_D13__EMI_DATA13 | MUX_CONFIG_EMI, + MX28_PAD_EMI_D14__EMI_DATA14 | MUX_CONFIG_EMI, + MX28_PAD_EMI_D15__EMI_DATA15 | MUX_CONFIG_EMI, + MX28_PAD_EMI_ODT0__EMI_ODT0 | MUX_CONFIG_EMI, + MX28_PAD_EMI_DQM0__EMI_DQM0 | MUX_CONFIG_EMI, + MX28_PAD_EMI_ODT1__EMI_ODT1 | MUX_CONFIG_EMI, + MX28_PAD_EMI_DQM1__EMI_DQM1 | MUX_CONFIG_EMI, + MX28_PAD_EMI_DDR_OPEN_FB__EMI_DDR_OPEN_FEEDBACK | MUX_CONFIG_EMI, + MX28_PAD_EMI_CLK__EMI_CLK | MUX_CONFIG_EMI, + MX28_PAD_EMI_DQS0__EMI_DQS0 | MUX_CONFIG_EMI, + MX28_PAD_EMI_DQS1__EMI_DQS1 | MUX_CONFIG_EMI, + MX28_PAD_EMI_DDR_OPEN__EMI_DDR_OPEN | MUX_CONFIG_EMI, + + MX28_PAD_EMI_A00__EMI_ADDR0 | MUX_CONFIG_EMI, + MX28_PAD_EMI_A01__EMI_ADDR1 | MUX_CONFIG_EMI, + MX28_PAD_EMI_A02__EMI_ADDR2 | MUX_CONFIG_EMI, + MX28_PAD_EMI_A03__EMI_ADDR3 | MUX_CONFIG_EMI, + MX28_PAD_EMI_A04__EMI_ADDR4 | MUX_CONFIG_EMI, + MX28_PAD_EMI_A05__EMI_ADDR5 | MUX_CONFIG_EMI, + MX28_PAD_EMI_A06__EMI_ADDR6 | MUX_CONFIG_EMI, + MX28_PAD_EMI_A07__EMI_ADDR7 | MUX_CONFIG_EMI, + MX28_PAD_EMI_A08__EMI_ADDR8 | MUX_CONFIG_EMI, + MX28_PAD_EMI_A09__EMI_ADDR9 | MUX_CONFIG_EMI, + MX28_PAD_EMI_A10__EMI_ADDR10 | MUX_CONFIG_EMI, + MX28_PAD_EMI_A11__EMI_ADDR11 | MUX_CONFIG_EMI, + MX28_PAD_EMI_A12__EMI_ADDR12 | MUX_CONFIG_EMI, + MX28_PAD_EMI_A13__EMI_ADDR13 | MUX_CONFIG_EMI, + MX28_PAD_EMI_A14__EMI_ADDR14 | MUX_CONFIG_EMI, + MX28_PAD_EMI_BA0__EMI_BA0 | MUX_CONFIG_EMI, + MX28_PAD_EMI_BA1__EMI_BA1 | MUX_CONFIG_EMI, + MX28_PAD_EMI_BA2__EMI_BA2 | MUX_CONFIG_EMI, + MX28_PAD_EMI_CASN__EMI_CASN | MUX_CONFIG_EMI, + MX28_PAD_EMI_RASN__EMI_RASN | MUX_CONFIG_EMI, + MX28_PAD_EMI_WEN__EMI_WEN | MUX_CONFIG_EMI, + MX28_PAD_EMI_CE0N__EMI_CE0N | MUX_CONFIG_EMI, + MX28_PAD_EMI_CE1N__EMI_CE1N | MUX_CONFIG_EMI, + MX28_PAD_EMI_CKE__EMI_CKE | MUX_CONFIG_EMI, + + /* SPI2 (for flash) */ + MX28_PAD_SSP2_SCK__SSP2_SCK | MUX_CONFIG_SSP2, + MX28_PAD_SSP2_MOSI__SSP2_CMD | MUX_CONFIG_SSP2, + MX28_PAD_SSP2_MISO__SSP2_D0 | MUX_CONFIG_SSP2, + MX28_PAD_SSP2_SS0__SSP2_D3 | + (MXS_PAD_3V3 | MXS_PAD_8MA | MXS_PAD_PULLUP), +}; + +void board_init_ll(void) +{ + mx28_common_spl_init(iomux_setup, ARRAY_SIZE(iomux_setup)); +} diff --git a/board/denx/m28evk/start.S b/board/denx/m28evk/start.S deleted file mode 100644 index 94696d6cdc..0000000000 --- a/board/denx/m28evk/start.S +++ /dev/null @@ -1,234 +0,0 @@ -/* - * armboot - Startup Code for ARM926EJS CPU-core - * - * Copyright (c) 2003 Texas Instruments - * - * ----- Adapted for OMAP1610 OMAP730 from ARM925t code ------ - * - * Copyright (c) 2001 Marius Groger - * Copyright (c) 2002 Alex Zupke - * Copyright (c) 2002 Gary Jennejohn - * Copyright (c) 2003 Richard Woodruff - * Copyright (c) 2003 Kshitij - * Copyright (c) 2010 Albert Aribaud - * - * Change to support call back into iMX28 bootrom - * Copyright (c) 2011 Marek Vasut - * on behalf of DENX Software Engineering GmbH - * - * See file CREDITS for list of people who contributed to this - * project. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation; either version 2 of - * the License, or (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, - * MA 02111-1307 USA - */ - -#include -#include -#include -#include - -#if defined(CONFIG_OMAP1610) -#include <./configs/omap1510.h> -#elif defined(CONFIG_OMAP730) -#include <./configs/omap730.h> -#endif - -/* - ************************************************************************* - * - * Jump vector table as in table 3.1 in [1] - * - ************************************************************************* - */ - - -.globl _start -_start: - b reset - b undefined_instruction - b software_interrupt - b prefetch_abort - b data_abort - b not_used - b irq - b fiq - -/* - * Vector table, located at address 0x20. - * This table allows the code running AFTER SPL, the U-Boot, to install it's - * interrupt handlers here. The problem is that the U-Boot is loaded into RAM, - * including it's interrupt vectoring table and the table at 0x0 is still the - * SPLs. So if interrupt happens in U-Boot, the SPLs interrupt vectoring table - * is still used. - */ -_vt_reset: - .word _reset -_vt_undefined_instruction: - .word _hang -_vt_software_interrupt: - .word _hang -_vt_prefetch_abort: - .word _hang -_vt_data_abort: - .word _hang -_vt_not_used: - .word _reset -_vt_irq: - .word _hang -_vt_fiq: - .word _hang - -reset: - ldr pc, _vt_reset -undefined_instruction: - ldr pc, _vt_undefined_instruction -software_interrupt: - ldr pc, _vt_software_interrupt -prefetch_abort: - ldr pc, _vt_prefetch_abort -data_abort: - ldr pc, _vt_data_abort -not_used: - ldr pc, _vt_not_used -irq: - ldr pc, _vt_irq -fiq: - ldr pc, _vt_fiq - - .balignl 16,0xdeadbeef - -/* - ************************************************************************* - * - * Startup Code (reset vector) - * - * do important init only if we don't start from memory! - * setup Memory and board specific bits prior to relocation. - * relocate armboot to ram - * setup stack - * - ************************************************************************* - */ - -.globl _TEXT_BASE -_TEXT_BASE: - .word CONFIG_SYS_TEXT_BASE - -/* - * These are defined in the board-specific linker script. - * Subtracting _start from them lets the linker put their - * relative position in the executable instead of leaving - * them null. - */ -.globl _bss_start_ofs -_bss_start_ofs: - .word __bss_start - _start - -.globl _bss_end_ofs -_bss_end_ofs: - .word __bss_end__ - _start - -.globl _end_ofs -_end_ofs: - .word _end - _start - -#ifdef CONFIG_USE_IRQ -/* IRQ stack memory (calculated at run-time) */ -.globl IRQ_STACK_START -IRQ_STACK_START: - .word 0x0badc0de - -/* IRQ stack memory (calculated at run-time) */ -.globl FIQ_STACK_START -FIQ_STACK_START: - .word 0x0badc0de -#endif - -/* IRQ stack memory (calculated at run-time) + 8 bytes */ -.globl IRQ_STACK_START_IN -IRQ_STACK_START_IN: - .word 0x0badc0de - -/* - * the actual reset code - */ - -_reset: - /* - * Store all registers on old stack pointer, this will allow us later to - * return to the BootROM and let the BootROM load U-Boot into RAM. - */ - push {r0-r12,r14} - - /* - * set the cpu to SVC32 mode - */ - mrs r0,cpsr - bic r0,r0,#0x1f - orr r0,r0,#0xd3 - msr cpsr,r0 - - /* - * we do sys-critical inits only at reboot, - * not when booting from ram! - */ -#ifndef CONFIG_SKIP_LOWLEVEL_INIT - bl cpu_init_crit -#endif - - bl board_init_ll - - pop {r0-r12,r14} - bx lr - -/* - ************************************************************************* - * - * CPU_init_critical registers - * - * setup important registers - * setup memory timing - * - ************************************************************************* - */ -#ifndef CONFIG_SKIP_LOWLEVEL_INIT -cpu_init_crit: - /* - * flush v4 I/D caches - */ - mov r0, #0 - mcr p15, 0, r0, c7, c7, 0 /* flush v3/v4 cache */ - mcr p15, 0, r0, c8, c7, 0 /* flush v4 TLB */ - - /* - * disable MMU stuff and caches - */ - mrc p15, 0, r0, c1, c0, 0 - bic r0, r0, #0x00002300 /* clear bits 13, 9:8 (--V- --RS) */ - bic r0, r0, #0x00000087 /* clear bits 7, 2:0 (B--- -CAM) */ - orr r0, r0, #0x00000002 /* set bit 2 (A) Align */ - orr r0, r0, #0x00001000 /* set bit 12 (I) I-Cache */ - mcr p15, 0, r0, c1, c0, 0 - - mov pc, lr /* back to my caller */ - - .align 5 -#endif /* CONFIG_SKIP_LOWLEVEL_INIT */ - -_hang: - ldr sp, _TEXT_BASE /* switch to abort stack */ -1: - bl 1b /* hang and never return */ diff --git a/board/denx/m28evk/u-boot-spl.lds b/board/denx/m28evk/u-boot-spl.lds deleted file mode 100644 index e296a92ed8..0000000000 --- a/board/denx/m28evk/u-boot-spl.lds +++ /dev/null @@ -1,87 +0,0 @@ -/* - * Copyright (C) 2011 Marek Vasut - * on behalf of DENX Software Engineering GmbH - * - * January 2004 - Changed to support H4 device - * Copyright (c) 2004-2008 Texas Instruments - * - * (C) Copyright 2002 - * Gary Jennejohn, DENX Software Engineering, - * - * See file CREDITS for list of people who contributed to this - * project. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation; either version 2 of - * the License, or (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, - * MA 02111-1307 USA - */ - -OUTPUT_FORMAT("elf32-littlearm", "elf32-littlearm", "elf32-littlearm") -OUTPUT_ARCH(arm) -ENTRY(_start) -SECTIONS -{ - . = 0x00000000; - - . = ALIGN(4); - .text : - { - board/denx/m28evk/start.o (.text) - *(.text) - } - - . = ALIGN(4); - .rodata : { *(SORT_BY_ALIGNMENT(SORT_BY_NAME(.rodata*))) } - - . = ALIGN(4); - .data : { - *(.data) - } - - . = ALIGN(4); - __u_boot_cmd_start = .; - .u_boot_cmd : { *(.u_boot_cmd) } - __u_boot_cmd_end = .; - - . = ALIGN(4); - - .rel.dyn : { - __rel_dyn_start = .; - *(.rel*) - __rel_dyn_end = .; - } - - .dynsym : { - __dynsym_start = .; - *(.dynsym) - } - - _end = .; - - .bss __rel_dyn_start (OVERLAY) : { - __bss_start = .; - *(.bss) - . = ALIGN(4); - __bss_end__ = .; - } - - /DISCARD/ : { *(.bss*) } - /DISCARD/ : { *(.dynstr*) } - /DISCARD/ : { *(.dynsym*) } - /DISCARD/ : { *(.dynamic*) } - /DISCARD/ : { *(.hash*) } - /DISCARD/ : { *(.plt*) } - /DISCARD/ : { *(.interp*) } - /DISCARD/ : { *(.gnu*) } -} diff --git a/include/configs/m28evk.h b/include/configs/m28evk.h index d4bd207d58..cdf7636c2f 100644 --- a/include/configs/m28evk.h +++ b/include/configs/m28evk.h @@ -48,8 +48,8 @@ */ #define CONFIG_SPL #define CONFIG_SPL_NO_CPU_SUPPORT_CODE -#define CONFIG_SPL_START_S_PATH "board/denx/m28evk" -#define CONFIG_SPL_LDSCRIPT "board/denx/m28evk/u-boot-spl.lds" +#define CONFIG_SPL_START_S_PATH "arch/arm/cpu/arm926ejs/mx28" +#define CONFIG_SPL_LDSCRIPT "arch/arm/cpu/arm926ejs/mx28/u-boot-spl.lds" /* * U-Boot Commands