+++ /dev/null
-/*
- * (C) Copyright 2009
- * Marvell Semiconductor <www.marvell.com>
- * Written-by: Prafulla Wadaskar <prafulla@marvell.com>
- *
- * 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., 51 Franklin Street, Fifth Floor, Boston,
- * MA 02110-1301 USA
- */
-
-#include <common.h>
-#include <netdev.h>
-#include <asm/cache.h>
-#include <u-boot/md5.h>
-#include <asm/arch/kirkwood.h>
-#include <hush.h>
-
-#define BUFLEN 16
-
-void reset_cpu(unsigned long ignored)
-{
- struct kwcpu_registers *cpureg =
- (struct kwcpu_registers *)KW_CPU_REG_BASE;
-
- writel(readl(&cpureg->rstoutn_mask) | (1 << 2),
- &cpureg->rstoutn_mask);
- writel(readl(&cpureg->sys_soft_rst) | 1,
- &cpureg->sys_soft_rst);
- while (1) ;
-}
-
-/*
- * Generates Ramdom hex number reading some time varient system registers
- * and using md5 algorithm
- */
-unsigned char get_random_hex(void)
-{
- int i;
- u32 inbuf[BUFLEN];
- u8 outbuf[BUFLEN];
-
- /*
- * in case of 88F6281/88F6192 A0,
- * Bit7 need to reset to generate random values in KW_REG_UNDOC_0x1470
- * Soc reg offsets KW_REG_UNDOC_0x1470 and KW_REG_UNDOC_0x1478 are reserved regs and
- * Does not have names at this moment (no errata available)
- */
- writel(readl(KW_REG_UNDOC_0x1478) & ~(1 << 7), KW_REG_UNDOC_0x1478);
- for (i = 0; i < BUFLEN; i++) {
- inbuf[i] = readl(KW_REG_UNDOC_0x1470);
- }
- md5((u8 *) inbuf, (BUFLEN * sizeof(u32)), outbuf);
- return outbuf[outbuf[7] % 0x0f];
-}
-
-/*
- * Window Size
- * Used with the Base register to set the address window size and location.
- * Must be programmed from LSB to MSB as sequence of ones followed by
- * sequence of zeros. The number of ones specifies the size of the window in
- * 64 KByte granularity (e.g., a value of 0x00FF specifies 256 = 16 MByte).
- * NOTE: A value of 0x0 specifies 64-KByte size.
- */
-unsigned int kw_winctrl_calcsize(unsigned int sizeval)
-{
- int i;
- unsigned int j = 0;
- u32 val = sizeval >> 1;
-
- for (i = 0; val > 0x10000; i++) {
- j |= (1 << i);
- val = val >> 1;
- }
- return (0x0000ffff & j);
-}
-
-/*
- * kw_config_adr_windows - Configure address Windows
- *
- * There are 8 address windows supported by Kirkwood Soc to addess different
- * devices. Each window can be configured for size, BAR and remap addr
- * Below configuration is standard for most of the cases
- *
- * If remap function not used, remap_lo must be set as base
- *
- * Reference Documentation:
- * Mbus-L to Mbus Bridge Registers Configuration.
- * (Sec 25.1 and 25.3 of Datasheet)
- */
-int kw_config_adr_windows(void)
-{
- struct kwwin_registers *winregs =
- (struct kwwin_registers *)KW_CPU_WIN_BASE;
-
- /* Window 0: PCIE MEM address space */
- writel(KWCPU_WIN_CTRL_DATA(1024 * 1024 * 256, KWCPU_TARGET_PCIE,
- KWCPU_ATTR_PCIE_MEM, KWCPU_WIN_ENABLE), &winregs[0].ctrl);
-
- writel(KW_DEFADR_PCI_MEM, &winregs[0].base);
- writel(KW_DEFADR_PCI_MEM, &winregs[0].remap_lo);
- writel(0x0, &winregs[0].remap_hi);
-
- /* Window 1: PCIE IO address space */
- writel(KWCPU_WIN_CTRL_DATA(1024 * 64, KWCPU_TARGET_PCIE,
- KWCPU_ATTR_PCIE_IO, KWCPU_WIN_ENABLE), &winregs[1].ctrl);
- writel(KW_DEFADR_PCI_IO, &winregs[1].base);
- writel(KW_DEFADR_PCI_IO_REMAP, &winregs[1].remap_lo);
- writel(0x0, &winregs[1].remap_hi);
-
- /* Window 2: NAND Flash address space */
- writel(KWCPU_WIN_CTRL_DATA(1024 * 1024 * 128, KWCPU_TARGET_MEMORY,
- KWCPU_ATTR_NANDFLASH, KWCPU_WIN_ENABLE), &winregs[2].ctrl);
- writel(KW_DEFADR_NANDF, &winregs[2].base);
- writel(KW_DEFADR_NANDF, &winregs[2].remap_lo);
- writel(0x0, &winregs[2].remap_hi);
-
- /* Window 3: SPI Flash address space */
- writel(KWCPU_WIN_CTRL_DATA(1024 * 1024 * 128, KWCPU_TARGET_MEMORY,
- KWCPU_ATTR_SPIFLASH, KWCPU_WIN_ENABLE), &winregs[3].ctrl);
- writel(KW_DEFADR_SPIF, &winregs[3].base);
- writel(KW_DEFADR_SPIF, &winregs[3].remap_lo);
- writel(0x0, &winregs[3].remap_hi);
-
- /* Window 4: BOOT Memory address space */
- writel(KWCPU_WIN_CTRL_DATA(1024 * 1024 * 128, KWCPU_TARGET_MEMORY,
- KWCPU_ATTR_BOOTROM, KWCPU_WIN_ENABLE), &winregs[4].ctrl);
- writel(KW_DEFADR_BOOTROM, &winregs[4].base);
-
- /* Window 5: Security SRAM address space */
- writel(KWCPU_WIN_CTRL_DATA(1024 * 64, KWCPU_TARGET_SASRAM,
- KWCPU_ATTR_SASRAM, KWCPU_WIN_ENABLE), &winregs[5].ctrl);
- writel(KW_DEFADR_SASRAM, &winregs[5].base);
-
- /* Window 6-7: Disabled */
- writel(KWCPU_WIN_DISABLE, &winregs[6].ctrl);
- writel(KWCPU_WIN_DISABLE, &winregs[7].ctrl);
-
- return 0;
-}
-
-/*
- * kw_config_gpio - GPIO configuration
- */
-void kw_config_gpio(u32 gpp0_oe_val, u32 gpp1_oe_val, u32 gpp0_oe, u32 gpp1_oe)
-{
- struct kwgpio_registers *gpio0reg =
- (struct kwgpio_registers *)KW_GPIO0_BASE;
- struct kwgpio_registers *gpio1reg =
- (struct kwgpio_registers *)KW_GPIO1_BASE;
-
- /* Init GPIOS to default values as per board requirement */
- writel(gpp0_oe_val, &gpio0reg->dout);
- writel(gpp1_oe_val, &gpio1reg->dout);
- writel(gpp0_oe, &gpio0reg->oe);
- writel(gpp1_oe, &gpio1reg->oe);
-}
-
-/*
- * kw_config_mpp - Multi-Purpose Pins Functionality configuration
- *
- * Each MPP can be configured to different functionality through
- * MPP control register, ref (sec 6.1 of kirkwood h/w specification)
- *
- * There are maximum 64 Multi-Pourpose Pins on Kirkwood
- * Each MPP functionality can be configuration by a 4bit value
- * of MPP control reg, the value and associated functionality depends
- * upon used SoC varient
- */
-int kw_config_mpp(u32 mpp0_7, u32 mpp8_15, u32 mpp16_23, u32 mpp24_31,
- u32 mpp32_39, u32 mpp40_47, u32 mpp48_55)
-{
- u32 *mppreg = (u32 *) KW_MPP_BASE;
-
- /* program mpp registers */
- writel(mpp0_7, &mppreg[0]);
- writel(mpp8_15, &mppreg[1]);
- writel(mpp16_23, &mppreg[2]);
- writel(mpp24_31, &mppreg[3]);
- writel(mpp32_39, &mppreg[4]);
- writel(mpp40_47, &mppreg[5]);
- writel(mpp48_55, &mppreg[6]);
- return 0;
-}
-
-/*
- * SYSRSTn Duration Counter Support
- *
- * Kirkwood SoC implements a hardware-based SYSRSTn duration counter.
- * When SYSRSTn is asserted low, a SYSRSTn duration counter is running.
- * The SYSRSTn duration counter is useful for implementing a manufacturer
- * or factory reset. Upon a long reset assertion that is greater than a
- * pre-configured environment variable value for sysrstdelay,
- * The counter value is stored in the SYSRSTn Length Counter Register
- * The counter is based on the 25-MHz reference clock (40ns)
- * It is a 29-bit counter, yielding a maximum counting duration of
- * 2^29/25 MHz (21.4 seconds). When the counter reach its maximum value,
- * it remains at this value until counter reset is triggered by setting
- * bit 31 of KW_REG_SYSRST_CNT
- */
-static void kw_sysrst_action(void)
-{
- int ret;
- char *s = getenv("sysrstcmd");
-
- if (!s) {
- debug("Error.. %s failed, check sysrstcmd\n",
- __FUNCTION__);
- return;
- }
-
- debug("Starting %s process...\n", __FUNCTION__);
-#if !defined(CONFIG_SYS_HUSH_PARSER)
- ret = run_command (s, 0);
-#else
- ret = parse_string_outer(s, FLAG_PARSE_SEMICOLON
- | FLAG_EXIT_FROM_LOOP);
-#endif
- if (ret < 0)
- debug("Error.. %s failed\n", __FUNCTION__);
- else
- debug("%s process finished\n", __FUNCTION__);
-}
-
-static void kw_sysrst_check(void)
-{
- u32 sysrst_cnt, sysrst_dly;
- char *s;
-
- /*
- * no action if sysrstdelay environment variable is not defined
- */
- s = getenv("sysrstdelay");
- if (s == NULL)
- return;
-
- /* read sysrstdelay value */
- sysrst_dly = (u32) simple_strtoul(s, NULL, 10);
-
- /* read SysRst Length counter register (bits 28:0) */
- sysrst_cnt = (0x1fffffff & readl(KW_REG_SYSRST_CNT));
- debug("H/w Rst hold time: %d.%d secs\n",
- sysrst_cnt / SYSRST_CNT_1SEC_VAL,
- sysrst_cnt % SYSRST_CNT_1SEC_VAL);
-
- /* clear the counter for next valid read*/
- writel(1 << 31, KW_REG_SYSRST_CNT);
-
- /*
- * sysrst_action:
- * if H/w Reset key is pressed and hold for time
- * more than sysrst_dly in seconds
- */
- if (sysrst_cnt >= SYSRST_CNT_1SEC_VAL * sysrst_dly)
- kw_sysrst_action();
-}
-
-#if defined(CONFIG_DISPLAY_CPUINFO)
-int print_cpuinfo(void)
-{
- char *name = "Unknown";
-
- switch (readl(KW_REG_DEVICE_ID) & 0x03) {
- case 1:
- name = "88F6192_A0";
- break;
- case 2:
- name = "88F6281_A0";
- break;
- default:
- printf("SoC: Unsupported Kirkwood\n");
- return -1;
- }
- printf("SoC: Kirkwood %s\n", name);
- return 0;
-}
-#endif /* CONFIG_DISPLAY_CPUINFO */
-
-#ifdef CONFIG_ARCH_CPU_INIT
-int arch_cpu_init(void)
-{
- u32 reg;
- struct kwcpu_registers *cpureg =
- (struct kwcpu_registers *)KW_CPU_REG_BASE;
-
- /* Linux expects` the internal registers to be at 0xf1000000 */
- writel(KW_REGS_PHY_BASE, KW_OFFSET_REG);
-
- /* Enable and invalidate L2 cache in write through mode */
- writel(readl(&cpureg->l2_cfg) | 0x18, &cpureg->l2_cfg);
- invalidate_l2_cache();
-
- kw_config_adr_windows();
-
-#ifdef CONFIG_KIRKWOOD_RGMII_PAD_1V8
- /*
- * Configures the I/O voltage of the pads connected to Egigabit
- * Ethernet interface to 1.8V
- * By defult it is set to 3.3V
- */
- reg = readl(KW_REG_MPP_OUT_DRV_REG);
- reg |= (1 << 7);
- writel(reg, KW_REG_MPP_OUT_DRV_REG);
-#endif
-#ifdef CONFIG_KIRKWOOD_EGIGA_INIT
- /*
- * Set egiga port0/1 in normal functional mode
- * This is required becasue on kirkwood by default ports are in reset mode
- * OS egiga driver may not have provision to set them in normal mode
- * and if u-boot is build without network support, network may fail at OS level
- */
- reg = readl(KWGBE_PORT_SERIAL_CONTROL1_REG(0));
- reg &= ~(1 << 4); /* Clear PortReset Bit */
- writel(reg, (KWGBE_PORT_SERIAL_CONTROL1_REG(0)));
- reg = readl(KWGBE_PORT_SERIAL_CONTROL1_REG(1));
- reg &= ~(1 << 4); /* Clear PortReset Bit */
- writel(reg, (KWGBE_PORT_SERIAL_CONTROL1_REG(1)));
-#endif
-#ifdef CONFIG_KIRKWOOD_PCIE_INIT
- /*
- * Enable PCI Express Port0
- */
- reg = readl(&cpureg->ctrl_stat);
- reg |= (1 << 0); /* Set PEX0En Bit */
- writel(reg, &cpureg->ctrl_stat);
-#endif
- return 0;
-}
-#endif /* CONFIG_ARCH_CPU_INIT */
-
-/*
- * SOC specific misc init
- */
-#if defined(CONFIG_ARCH_MISC_INIT)
-int arch_misc_init(void)
-{
- volatile u32 temp;
-
- /*CPU streaming & write allocate */
- temp = readfr_extra_feature_reg();
- temp &= ~(1 << 28); /* disable wr alloc */
- writefr_extra_feature_reg(temp);
-
- temp = readfr_extra_feature_reg();
- temp &= ~(1 << 29); /* streaming disabled */
- writefr_extra_feature_reg(temp);
-
- /* L2Cache settings */
- temp = readfr_extra_feature_reg();
- /* Disable L2C pre fetch - Set bit 24 */
- temp |= (1 << 24);
- /* enable L2C - Set bit 22 */
- temp |= (1 << 22);
- writefr_extra_feature_reg(temp);
-
- icache_enable();
- /* Change reset vector to address 0x0 */
- temp = get_cr();
- set_cr(temp & ~CR_V);
-
- /* checks and execute resset to factory event */
- kw_sysrst_check();
-
- return 0;
-}
-#endif /* CONFIG_ARCH_MISC_INIT */
-
-#ifdef CONFIG_KIRKWOOD_EGIGA
-int cpu_eth_init(bd_t *bis)
-{
- kirkwood_egiga_initialize(bis);
- return 0;
-}
-#endif
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