From: Marek Vasut Date: Sat, 26 Nov 2011 06:32:24 +0000 (+0100) Subject: PXA: Separate PXA2xx CPU init X-Git-Tag: v2011.12-rc1~60^2~87 X-Git-Url: https://git.sur5r.net/?a=commitdiff_plain;h=d10237d275300562bbfecbbe2f59a97cfb9dc180;p=u-boot PXA: Separate PXA2xx CPU init Signed-off-by: Marek Vasut --- diff --git a/arch/arm/cpu/pxa/Makefile b/arch/arm/cpu/pxa/Makefile index e8b59a30c9..29dc63781a 100644 --- a/arch/arm/cpu/pxa/Makefile +++ b/arch/arm/cpu/pxa/Makefile @@ -27,7 +27,10 @@ LIB = $(obj)lib$(CPU).o START = start.o -COBJS += cpu.o +COBJS-$(CONFIG_CPU_PXA25X) = pxa2xx.o +COBJS-$(CONFIG_CPU_PXA27X) = pxa2xx.o + +COBJS = $(COBJS-y) COBJS += pxafb.o COBJS += timer.o COBJS += usb.o diff --git a/arch/arm/cpu/pxa/cpu.c b/arch/arm/cpu/pxa/cpu.c deleted file mode 100644 index 77275547aa..0000000000 --- a/arch/arm/cpu/pxa/cpu.c +++ /dev/null @@ -1,346 +0,0 @@ -/* - * (C) Copyright 2002 - * Sysgo Real-Time Solutions, GmbH - * Marius Groeger - * - * (C) Copyright 2002 - * Sysgo Real-Time Solutions, GmbH - * Alex Zuepke - * - * 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 - */ - -/* - * CPU specific code - */ - -#include -#include -#include -#include -#include - -static void cache_flush(void); - -int cleanup_before_linux (void) -{ - /* - * this function is called just before we call linux - * it prepares the processor for linux - * - * just disable everything that can disturb booting linux - */ - - disable_interrupts (); - - /* turn off I-cache */ - icache_disable(); - dcache_disable(); - - /* flush I-cache */ - cache_flush(); - - return (0); -} - -/* flush I/D-cache */ -static void cache_flush (void) -{ - unsigned long i = 0; - - asm ("mcr p15, 0, %0, c7, c5, 0": :"r" (i)); -} - -#ifndef CONFIG_CPU_MONAHANS -void set_GPIO_mode(int gpio_mode) -{ - int gpio = gpio_mode & GPIO_MD_MASK_NR; - int fn = (gpio_mode & GPIO_MD_MASK_FN) >> 8; - int val; - - /* This below changes direction setting of GPIO "gpio" */ - val = readl(GPDR(gpio)); - - if (gpio_mode & GPIO_MD_MASK_DIR) - val |= GPIO_bit(gpio); - else - val &= ~GPIO_bit(gpio); - - writel(val, GPDR(gpio)); - - /* This below updates only AF of GPIO "gpio" */ - val = readl(GAFR(gpio)); - val &= ~(0x3 << (((gpio) & 0xf) * 2)); - val |= fn << (((gpio) & 0xf) * 2); - writel(val, GAFR(gpio)); -} -#endif /* CONFIG_CPU_MONAHANS */ - -void pxa_wait_ticks(int ticks) -{ - writel(0, OSCR); - while (readl(OSCR) < ticks) - asm volatile("":::"memory"); -} - -inline void writelrb(uint32_t val, uint32_t addr) -{ - writel(val, addr); - asm volatile("":::"memory"); - readl(addr); - asm volatile("":::"memory"); -} - -void pxa_dram_init(void) -{ - uint32_t tmp; - int i; - /* - * 1) Initialize Asynchronous static memory controller - */ - - writelrb(CONFIG_SYS_MSC0_VAL, MSC0); - writelrb(CONFIG_SYS_MSC1_VAL, MSC1); - writelrb(CONFIG_SYS_MSC2_VAL, MSC2); - /* - * 2) Initialize Card Interface - */ - - /* MECR: Memory Expansion Card Register */ - writelrb(CONFIG_SYS_MECR_VAL, MECR); - /* MCMEM0: Card Interface slot 0 timing */ - writelrb(CONFIG_SYS_MCMEM0_VAL, MCMEM0); - /* MCMEM1: Card Interface slot 1 timing */ - writelrb(CONFIG_SYS_MCMEM1_VAL, MCMEM1); - /* MCATT0: Card Interface Attribute Space Timing, slot 0 */ - writelrb(CONFIG_SYS_MCATT0_VAL, MCATT0); - /* MCATT1: Card Interface Attribute Space Timing, slot 1 */ - writelrb(CONFIG_SYS_MCATT1_VAL, MCATT1); - /* MCIO0: Card Interface I/O Space Timing, slot 0 */ - writelrb(CONFIG_SYS_MCIO0_VAL, MCIO0); - /* MCIO1: Card Interface I/O Space Timing, slot 1 */ - writelrb(CONFIG_SYS_MCIO1_VAL, MCIO1); - - /* - * 3) Configure Fly-By DMA register - */ - - writelrb(CONFIG_SYS_FLYCNFG_VAL, FLYCNFG); - - /* - * 4) Initialize Timing for Sync Memory (SDCLK0) - */ - - /* - * Before accessing MDREFR we need a valid DRI field, so we set - * this to power on defaults + DRI field. - */ - - /* Read current MDREFR config and zero out DRI */ - tmp = readl(MDREFR) & ~0xfff; - /* Add user-specified DRI */ - tmp |= CONFIG_SYS_MDREFR_VAL & 0xfff; - /* Configure important bits */ - tmp |= MDREFR_K0RUN | MDREFR_SLFRSH; - tmp &= ~(MDREFR_APD | MDREFR_E1PIN); - - /* Write MDREFR back */ - writelrb(tmp, MDREFR); - - /* - * 5) Initialize Synchronous Static Memory (Flash/Peripherals) - */ - - /* Initialize SXCNFG register. Assert the enable bits. - * - * Write SXMRS to cause an MRS command to all enabled banks of - * synchronous static memory. Note that SXLCR need not be written - * at this time. - */ - writelrb(CONFIG_SYS_SXCNFG_VAL, SXCNFG); - - /* - * 6) Initialize SDRAM - */ - - writelrb(CONFIG_SYS_MDREFR_VAL & ~MDREFR_SLFRSH, MDREFR); - writelrb(CONFIG_SYS_MDREFR_VAL | MDREFR_E1PIN, MDREFR); - - /* - * 7) Write MDCNFG with MDCNFG:DEx deasserted (set to 0), to configure - * but not enable each SDRAM partition pair. - */ - - writelrb(CONFIG_SYS_MDCNFG_VAL & - ~(MDCNFG_DE0 | MDCNFG_DE1 | MDCNFG_DE2 | MDCNFG_DE3), MDCNFG); - /* Wait for the clock to the SDRAMs to stabilize, 100..200 usec. */ - pxa_wait_ticks(0x300); - - /* - * 8) Trigger a number (usually 8) refresh cycles by attempting - * non-burst read or write accesses to disabled SDRAM, as commonly - * specified in the power up sequence documented in SDRAM data - * sheets. The address(es) used for this purpose must not be - * cacheable. - */ - for (i = 9; i >= 0; i--) { - writel(i, 0xa0000000); - asm volatile("":::"memory"); - } - /* - * 9) Write MDCNFG with enable bits asserted (MDCNFG:DEx set to 1). - */ - - tmp = CONFIG_SYS_MDCNFG_VAL & - (MDCNFG_DE0 | MDCNFG_DE1 | MDCNFG_DE2 | MDCNFG_DE3); - tmp |= readl(MDCNFG); - writelrb(tmp, MDCNFG); - - /* - * 10) Write MDMRS. - */ - - writelrb(CONFIG_SYS_MDMRS_VAL, MDMRS); - - /* - * 11) Enable APD - */ - - if (CONFIG_SYS_MDREFR_VAL & MDREFR_APD) { - tmp = readl(MDREFR); - tmp |= MDREFR_APD; - writelrb(tmp, MDREFR); - } -} - -void pxa_gpio_setup(void) -{ - writel(CONFIG_SYS_GPSR0_VAL, GPSR0); - writel(CONFIG_SYS_GPSR1_VAL, GPSR1); - writel(CONFIG_SYS_GPSR2_VAL, GPSR2); -#if defined(CONFIG_CPU_PXA27X) || defined(CONFIG_CPU_MONAHANS) - writel(CONFIG_SYS_GPSR3_VAL, GPSR3); -#endif - - writel(CONFIG_SYS_GPCR0_VAL, GPCR0); - writel(CONFIG_SYS_GPCR1_VAL, GPCR1); - writel(CONFIG_SYS_GPCR2_VAL, GPCR2); -#if defined(CONFIG_CPU_PXA27X) || defined(CONFIG_CPU_MONAHANS) - writel(CONFIG_SYS_GPCR3_VAL, GPCR3); -#endif - - writel(CONFIG_SYS_GPDR0_VAL, GPDR0); - writel(CONFIG_SYS_GPDR1_VAL, GPDR1); - writel(CONFIG_SYS_GPDR2_VAL, GPDR2); -#if defined(CONFIG_CPU_PXA27X) || defined(CONFIG_CPU_MONAHANS) - writel(CONFIG_SYS_GPDR3_VAL, GPDR3); -#endif - - writel(CONFIG_SYS_GAFR0_L_VAL, GAFR0_L); - writel(CONFIG_SYS_GAFR0_U_VAL, GAFR0_U); - writel(CONFIG_SYS_GAFR1_L_VAL, GAFR1_L); - writel(CONFIG_SYS_GAFR1_U_VAL, GAFR1_U); - writel(CONFIG_SYS_GAFR2_L_VAL, GAFR2_L); - writel(CONFIG_SYS_GAFR2_U_VAL, GAFR2_U); -#if defined(CONFIG_CPU_PXA27X) || defined(CONFIG_CPU_MONAHANS) - writel(CONFIG_SYS_GAFR3_L_VAL, GAFR3_L); - writel(CONFIG_SYS_GAFR3_U_VAL, GAFR3_U); -#endif - - writel(CONFIG_SYS_PSSR_VAL, PSSR); -} - -void pxa_interrupt_setup(void) -{ - writel(0, ICLR); - writel(0, ICMR); -#if defined(CONFIG_CPU_PXA27X) || defined(CONFIG_CPU_MONAHANS) - writel(0, ICLR2); - writel(0, ICMR2); -#endif -} - -void pxa_clock_setup(void) -{ -#ifndef CONFIG_CPU_MONAHANS - writel(CONFIG_SYS_CKEN, CKEN); - writel(CONFIG_SYS_CCCR, CCCR); - asm volatile("mcr p14, 0, %0, c6, c0, 0"::"r"(2)); -#else -/* Set CKENA/CKENB/ACCR for MH */ -#endif - - /* enable the 32Khz oscillator for RTC and PowerManager */ - writel(OSCC_OON, OSCC); - while(!(readl(OSCC) & OSCC_OOK)) - asm volatile("":::"memory"); -} - -void pxa_wakeup(void) -{ - uint32_t rcsr; - - rcsr = readl(RCSR); - writel(rcsr & (RCSR_GPR | RCSR_SMR | RCSR_WDR | RCSR_HWR), RCSR); - - /* Wakeup */ - if (rcsr & RCSR_SMR) { - writel(PSSR_PH, PSSR); - pxa_dram_init(); - icache_disable(); - dcache_disable(); - asm volatile("mov pc, %0"::"r"(readl(PSPR))); - } -} - -int arch_cpu_init(void) -{ - pxa_gpio_setup(); -/* pxa_wait_ticks(0x8000); */ - pxa_wakeup(); - pxa_interrupt_setup(); - pxa_clock_setup(); - return 0; -} - -void i2c_clk_enable(void) -{ - /* set the global I2C clock on */ -#ifdef CONFIG_CPU_MONAHANS - writel(readl(CKENB) | (CKENB_4_I2C), CKENB); -#else - writel(readl(CKEN) | CKEN14_I2C, CKEN); -#endif -} - -void reset_cpu(ulong ignored) __attribute__((noreturn)); - -void reset_cpu(ulong ignored) -{ - uint32_t tmp; - - setbits_le32(OWER, OWER_WME); - - tmp = readl(OSCR); - tmp += 0x1000; - writel(tmp, OSMR3); - - for (;;) - ; -} diff --git a/arch/arm/cpu/pxa/pxa2xx.c b/arch/arm/cpu/pxa/pxa2xx.c new file mode 100644 index 0000000000..e7b475d162 --- /dev/null +++ b/arch/arm/cpu/pxa/pxa2xx.c @@ -0,0 +1,301 @@ +/* + * (C) Copyright 2002 + * Sysgo Real-Time Solutions, GmbH + * Marius Groeger + * + * (C) Copyright 2002 + * Sysgo Real-Time Solutions, GmbH + * Alex Zuepke + * + * 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 + +/* Flush I/D-cache */ +static void cache_flush(void) +{ + unsigned long i = 0; + + asm ("mcr p15, 0, %0, c7, c5, 0" : : "r" (i)); +} + +int cleanup_before_linux(void) +{ + /* + * This function is called just before we call Linux. It prepares + * the processor for Linux by just disabling everything that can + * disturb booting Linux. + */ + + disable_interrupts(); + icache_disable(); + dcache_disable(); + cache_flush(); + + return 0; +} + +void pxa_wait_ticks(int ticks) +{ + writel(0, OSCR); + while (readl(OSCR) < ticks) + asm volatile("" : : : "memory"); +} + +inline void writelrb(uint32_t val, uint32_t addr) +{ + writel(val, addr); + asm volatile("" : : : "memory"); + readl(addr); + asm volatile("" : : : "memory"); +} + +void pxa_dram_init(void) +{ + uint32_t tmp; + int i; + /* + * 1) Initialize Asynchronous static memory controller + */ + + writelrb(CONFIG_SYS_MSC0_VAL, MSC0); + writelrb(CONFIG_SYS_MSC1_VAL, MSC1); + writelrb(CONFIG_SYS_MSC2_VAL, MSC2); + /* + * 2) Initialize Card Interface + */ + + /* MECR: Memory Expansion Card Register */ + writelrb(CONFIG_SYS_MECR_VAL, MECR); + /* MCMEM0: Card Interface slot 0 timing */ + writelrb(CONFIG_SYS_MCMEM0_VAL, MCMEM0); + /* MCMEM1: Card Interface slot 1 timing */ + writelrb(CONFIG_SYS_MCMEM1_VAL, MCMEM1); + /* MCATT0: Card Interface Attribute Space Timing, slot 0 */ + writelrb(CONFIG_SYS_MCATT0_VAL, MCATT0); + /* MCATT1: Card Interface Attribute Space Timing, slot 1 */ + writelrb(CONFIG_SYS_MCATT1_VAL, MCATT1); + /* MCIO0: Card Interface I/O Space Timing, slot 0 */ + writelrb(CONFIG_SYS_MCIO0_VAL, MCIO0); + /* MCIO1: Card Interface I/O Space Timing, slot 1 */ + writelrb(CONFIG_SYS_MCIO1_VAL, MCIO1); + + /* + * 3) Configure Fly-By DMA register + */ + + writelrb(CONFIG_SYS_FLYCNFG_VAL, FLYCNFG); + + /* + * 4) Initialize Timing for Sync Memory (SDCLK0) + */ + + /* + * Before accessing MDREFR we need a valid DRI field, so we set + * this to power on defaults + DRI field. + */ + + /* Read current MDREFR config and zero out DRI */ + tmp = readl(MDREFR) & ~0xfff; + /* Add user-specified DRI */ + tmp |= CONFIG_SYS_MDREFR_VAL & 0xfff; + /* Configure important bits */ + tmp |= MDREFR_K0RUN | MDREFR_SLFRSH; + tmp &= ~(MDREFR_APD | MDREFR_E1PIN); + + /* Write MDREFR back */ + writelrb(tmp, MDREFR); + + /* + * 5) Initialize Synchronous Static Memory (Flash/Peripherals) + */ + + /* Initialize SXCNFG register. Assert the enable bits. + * + * Write SXMRS to cause an MRS command to all enabled banks of + * synchronous static memory. Note that SXLCR need not be written + * at this time. + */ + writelrb(CONFIG_SYS_SXCNFG_VAL, SXCNFG); + + /* + * 6) Initialize SDRAM + */ + + writelrb(CONFIG_SYS_MDREFR_VAL & ~MDREFR_SLFRSH, MDREFR); + writelrb(CONFIG_SYS_MDREFR_VAL | MDREFR_E1PIN, MDREFR); + + /* + * 7) Write MDCNFG with MDCNFG:DEx deasserted (set to 0), to configure + * but not enable each SDRAM partition pair. + */ + + writelrb(CONFIG_SYS_MDCNFG_VAL & + ~(MDCNFG_DE0 | MDCNFG_DE1 | MDCNFG_DE2 | MDCNFG_DE3), MDCNFG); + /* Wait for the clock to the SDRAMs to stabilize, 100..200 usec. */ + pxa_wait_ticks(0x300); + + /* + * 8) Trigger a number (usually 8) refresh cycles by attempting + * non-burst read or write accesses to disabled SDRAM, as commonly + * specified in the power up sequence documented in SDRAM data + * sheets. The address(es) used for this purpose must not be + * cacheable. + */ + for (i = 9; i >= 0; i--) { + writel(i, 0xa0000000); + asm volatile("" : : : "memory"); + } + /* + * 9) Write MDCNFG with enable bits asserted (MDCNFG:DEx set to 1). + */ + + tmp = CONFIG_SYS_MDCNFG_VAL & + (MDCNFG_DE0 | MDCNFG_DE1 | MDCNFG_DE2 | MDCNFG_DE3); + tmp |= readl(MDCNFG); + writelrb(tmp, MDCNFG); + + /* + * 10) Write MDMRS. + */ + + writelrb(CONFIG_SYS_MDMRS_VAL, MDMRS); + + /* + * 11) Enable APD + */ + + if (CONFIG_SYS_MDREFR_VAL & MDREFR_APD) { + tmp = readl(MDREFR); + tmp |= MDREFR_APD; + writelrb(tmp, MDREFR); + } +} + +void pxa_gpio_setup(void) +{ + writel(CONFIG_SYS_GPSR0_VAL, GPSR0); + writel(CONFIG_SYS_GPSR1_VAL, GPSR1); + writel(CONFIG_SYS_GPSR2_VAL, GPSR2); +#if defined(CONFIG_CPU_PXA27X) + writel(CONFIG_SYS_GPSR3_VAL, GPSR3); +#endif + + writel(CONFIG_SYS_GPCR0_VAL, GPCR0); + writel(CONFIG_SYS_GPCR1_VAL, GPCR1); + writel(CONFIG_SYS_GPCR2_VAL, GPCR2); +#if defined(CONFIG_CPU_PXA27X) + writel(CONFIG_SYS_GPCR3_VAL, GPCR3); +#endif + + writel(CONFIG_SYS_GPDR0_VAL, GPDR0); + writel(CONFIG_SYS_GPDR1_VAL, GPDR1); + writel(CONFIG_SYS_GPDR2_VAL, GPDR2); +#if defined(CONFIG_CPU_PXA27X) + writel(CONFIG_SYS_GPDR3_VAL, GPDR3); +#endif + + writel(CONFIG_SYS_GAFR0_L_VAL, GAFR0_L); + writel(CONFIG_SYS_GAFR0_U_VAL, GAFR0_U); + writel(CONFIG_SYS_GAFR1_L_VAL, GAFR1_L); + writel(CONFIG_SYS_GAFR1_U_VAL, GAFR1_U); + writel(CONFIG_SYS_GAFR2_L_VAL, GAFR2_L); + writel(CONFIG_SYS_GAFR2_U_VAL, GAFR2_U); +#if defined(CONFIG_CPU_PXA27X) + writel(CONFIG_SYS_GAFR3_L_VAL, GAFR3_L); + writel(CONFIG_SYS_GAFR3_U_VAL, GAFR3_U); +#endif + + writel(CONFIG_SYS_PSSR_VAL, PSSR); +} + +void pxa_interrupt_setup(void) +{ + writel(0, ICLR); + writel(0, ICMR); +#if defined(CONFIG_CPU_PXA27X) + writel(0, ICLR2); + writel(0, ICMR2); +#endif +} + +void pxa_clock_setup(void) +{ + writel(CONFIG_SYS_CKEN, CKEN); + writel(CONFIG_SYS_CCCR, CCCR); + asm volatile("mcr p14, 0, %0, c6, c0, 0" : : "r"(2)); + + /* enable the 32Khz oscillator for RTC and PowerManager */ + writel(OSCC_OON, OSCC); + while (!(readl(OSCC) & OSCC_OOK)) + asm volatile("" : : : "memory"); +} + +void pxa_wakeup(void) +{ + uint32_t rcsr; + + rcsr = readl(RCSR); + writel(rcsr & (RCSR_GPR | RCSR_SMR | RCSR_WDR | RCSR_HWR), RCSR); + + /* Wakeup */ + if (rcsr & RCSR_SMR) { + writel(PSSR_PH, PSSR); + pxa_dram_init(); + icache_disable(); + dcache_disable(); + asm volatile("mov pc, %0" : : "r"(readl(PSPR))); + } +} + +int arch_cpu_init(void) +{ + pxa_gpio_setup(); + pxa_wakeup(); + pxa_interrupt_setup(); + pxa_clock_setup(); + return 0; +} + +void i2c_clk_enable(void) +{ + /* Set the global I2C clock on */ + writel(readl(CKEN) | CKEN14_I2C, CKEN); +} + +void reset_cpu(ulong ignored) __attribute__((noreturn)); + +void reset_cpu(ulong ignored) +{ + uint32_t tmp; + + setbits_le32(OWER, OWER_WME); + + tmp = readl(OSCR); + tmp += 0x1000; + writel(tmp, OSMR3); + + for (;;) + ; +}