mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-07-21 18:39:43 +09:00
82239aa7cd
Add JTAG recovery support into the M2 Porter TPL. This allows the TPL to be loaded over JTAG, initialize the system, wait for the JTAG debugger to load U-Boot image into RAM and then resume and start U-Boot from RAM. The procedure is as follows: 1) Load u-boot-tpl.bin to 0xe6300000 2) Write magic number 0x1337c0de to 0xe6300020 TPL checks for this particular magic and starts JTAG recovery if this number is present. This is not present by default. 3) Start U-Boot TPL from 0xe6300000 4) Wait for a message from TPL on UART indicating JTAG boot: "JTAG boot detected!" 5) Halt the system in JTAG debugger 6) Load U-Boot image (u-boot.img) to 0x4fffffc0 7) Write magic number 0xb33fc0de to 0xe6300024 TPL checks for this particular magic to verify that the U-Boot image was loaded into DRAM by the JTAG debugger. 8) Resume the system in JTAG debugger Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com> Cc: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
496 lines
12 KiB
C
496 lines
12 KiB
C
/*
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* board/renesas/porter/porter_spl.c
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*
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* Copyright (C) 2018 Marek Vasut <marek.vasut@gmail.com>
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*
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* SPDX-License-Identifier: GPL-2.0
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*/
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#include <common.h>
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#include <malloc.h>
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#include <dm/platform_data/serial_sh.h>
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#include <asm/processor.h>
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#include <asm/mach-types.h>
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#include <asm/io.h>
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#include <linux/errno.h>
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#include <asm/arch/sys_proto.h>
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#include <asm/gpio.h>
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#include <asm/arch/rmobile.h>
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#include <asm/arch/rcar-mstp.h>
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#include <spl.h>
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#define TMU0_MSTP125 BIT(25)
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#define SCIF0_MSTP721 BIT(21)
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#define QSPI_MSTP917 BIT(17)
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#define SD2CKCR 0xE615026C
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#define SD_97500KHZ 0x7
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#ifdef CONFIG_TPL_BUILD
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struct reg_config {
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u16 off;
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u32 val;
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};
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static void dbsc_wait(u16 reg)
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{
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static const u32 dbsc3_0_base = DBSC3_0_BASE;
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static const u32 dbsc3_1_base = DBSC3_0_BASE + 0x10000;
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while (!(readl(dbsc3_0_base + reg) & BIT(0)))
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;
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while (!(readl(dbsc3_1_base + reg) & BIT(0)))
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;
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}
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static void tpl_init_sys(void)
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{
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u32 r0 = 0;
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writel(0xa5a5a500, 0xe6020004);
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writel(0xa5a5a500, 0xe6030004);
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asm volatile(
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/* ICIALLU - Invalidate I$ to PoU */
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"mcr 15, 0, %0, cr7, cr5, 0 \n"
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/* BPIALL - Invalidate branch predictors */
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"mcr 15, 0, %0, cr7, cr5, 6 \n"
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/* Set SCTLR[IZ] */
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"mrc 15, 0, %0, cr1, cr0, 0 \n"
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"orr %0, #0x1800 \n"
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"mcr 15, 0, %0, cr1, cr0, 0 \n"
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"isb sy \n"
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:"=r"(r0));
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}
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static void tpl_init_pfc(void)
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{
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static const struct reg_config pfc_with_unlock[] = {
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{ 0x0090, 0x60000000 },
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{ 0x0094, 0x60000000 },
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{ 0x0098, 0x00800200 },
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{ 0x009c, 0x00000000 },
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{ 0x0020, 0x00000000 },
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{ 0x0024, 0x00000000 },
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{ 0x0028, 0x000244c8 },
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{ 0x002c, 0x00000000 },
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{ 0x0030, 0x00002400 },
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{ 0x0034, 0x01520000 },
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{ 0x0038, 0x00724003 },
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{ 0x003c, 0x00000000 },
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{ 0x0040, 0x00000000 },
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{ 0x0044, 0x00000000 },
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{ 0x0048, 0x00000000 },
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{ 0x004c, 0x00000000 },
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{ 0x0050, 0x00000000 },
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{ 0x0054, 0x00000000 },
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{ 0x0058, 0x00000000 },
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{ 0x005c, 0x00000000 },
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{ 0x0160, 0x00000000 },
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{ 0x0004, 0xffffffff },
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{ 0x0008, 0x00ec3fff },
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{ 0x000c, 0x3bc001e7 },
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{ 0x0010, 0x5bffffff },
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{ 0x0014, 0x1ffffffb },
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{ 0x0018, 0x01bffff0 },
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{ 0x001c, 0xcf7fffff },
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{ 0x0074, 0x0381fc00 },
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};
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static const struct reg_config pfc_without_unlock[] = {
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{ 0x0100, 0xffffffdf },
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{ 0x0104, 0xc883c3ff },
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{ 0x0108, 0x1201f3c9 },
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{ 0x010c, 0x00000000 },
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{ 0x0110, 0xffffeb04 },
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{ 0x0114, 0xc003ffff },
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{ 0x0118, 0x0800000f },
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{ 0x011c, 0x00187ff0 },
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};
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static const u32 pfc_base = 0xe6060000;
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unsigned int i;
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for (i = 0; i < ARRAY_SIZE(pfc_with_unlock); i++) {
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writel(~pfc_with_unlock[i].val, pfc_base);
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writel(pfc_with_unlock[i].val,
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pfc_base | pfc_with_unlock[i].off);
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}
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for (i = 0; i < ARRAY_SIZE(pfc_without_unlock); i++)
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writel(pfc_without_unlock[i].val,
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pfc_base | pfc_without_unlock[i].off);
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}
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static void tpl_init_gpio(void)
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{
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static const u16 gpio_offs[] = {
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0x1000, 0x2000, 0x3000, 0x4000, 0x5000, 0x5400, 0x5800
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};
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static const struct reg_config gpio_set[] = {
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{ 0x2000, 0x04381000 },
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{ 0x5000, 0x00000000 },
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{ 0x5800, 0x000e0000 },
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};
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static const struct reg_config gpio_clr[] = {
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{ 0x1000, 0x00000000 },
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{ 0x2000, 0x04381010 },
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{ 0x3000, 0x00000000 },
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{ 0x4000, 0x00000000 },
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{ 0x5000, 0x00400000 },
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{ 0x5400, 0x00000000 },
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{ 0x5800, 0x000e0380 },
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};
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static const u32 gpio_base = 0xe6050000;
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unsigned int i;
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for (i = 0; i < ARRAY_SIZE(gpio_offs); i++)
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writel(0, gpio_base | 0x20 | gpio_offs[i]);
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for (i = 0; i < ARRAY_SIZE(gpio_offs); i++)
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writel(0, gpio_base | 0x00 | gpio_offs[i]);
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for (i = 0; i < ARRAY_SIZE(gpio_set); i++)
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writel(gpio_set[i].val, gpio_base | 0x08 | gpio_set[i].off);
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for (i = 0; i < ARRAY_SIZE(gpio_clr); i++)
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writel(gpio_clr[i].val, gpio_base | 0x04 | gpio_clr[i].off);
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}
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static void tpl_init_lbsc(void)
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{
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static const struct reg_config lbsc_config[] = {
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{ 0x00, 0x00000020 },
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{ 0x08, 0x00002020 },
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{ 0x10, 0x2a103320 },
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{ 0x18, 0xff70ff70 },
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};
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static const u16 lbsc_offs[] = {
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0x80, 0x84, 0x88, 0x8c, 0xa0, 0xc0, 0xc4, 0xc8, 0x180
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};
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static const u32 lbsc_base = 0xfec00200;
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unsigned int i;
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for (i = 0; i < ARRAY_SIZE(lbsc_config); i++) {
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writel(lbsc_config[i].val,
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lbsc_base | lbsc_config[i].off);
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writel(lbsc_config[i].val,
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lbsc_base | (lbsc_config[i].off + 4));
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}
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for (i = 0; i < ARRAY_SIZE(lbsc_offs); i++)
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writel(0, lbsc_base | lbsc_offs[i]);
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}
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static void tpl_init_dbsc(void)
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{
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static const struct reg_config dbsc_config1[] = {
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{ 0x0280, 0x0000a55a },
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{ 0x4000, 0x0000a55a },
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{ 0x4008, 0x00000001 },
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{ 0x0018, 0x21000000 },
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{ 0x0018, 0x11000000 },
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{ 0x0018, 0x10000000 },
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{ 0x0290, 0x00000001 },
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{ 0x02a0, 0x80000000 },
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{ 0x0290, 0x00000004 },
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};
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static const struct reg_config dbsc_config2[] = {
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{ 0x0290, 0x00000006 },
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{ 0x02a0, 0x0001c000 },
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};
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static const struct reg_config dbsc_config3r0d0[] = {
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{ 0x0290, 0x0000000f },
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{ 0x02a0, 0x00181885 },
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{ 0x0290, 0x00000070 },
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{ 0x02a0, 0x7c000887 },
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{ 0x0290, 0x00000080 },
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{ 0x02a0, 0x7c000887 },
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{ 0x0290, 0x00000090 },
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{ 0x02a0, 0x7c000887 },
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{ 0x0290, 0x000000a0 },
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{ 0x02a0, 0x7c000887 },
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{ 0x0290, 0x000000b0 },
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{ 0x02a0, 0x7c000880 },
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{ 0x0290, 0x000000c0 },
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{ 0x02a0, 0x7c000880 },
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{ 0x0290, 0x000000d0 },
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{ 0x02a0, 0x7c000880 },
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{ 0x0290, 0x000000e0 },
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{ 0x02a0, 0x7c000880 },
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};
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static const struct reg_config dbsc_config3r0d1[] = {
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{ 0x0290, 0x0000000f },
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{ 0x02a0, 0x00181885 },
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{ 0x0290, 0x00000070 },
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{ 0x02a0, 0x7c000887 },
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{ 0x0290, 0x00000080 },
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{ 0x02a0, 0x7c000887 },
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{ 0x0290, 0x00000090 },
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{ 0x02a0, 0x7c000887 },
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{ 0x0290, 0x000000a0 },
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{ 0x02a0, 0x7c000887 },
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};
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static const struct reg_config dbsc_config3r2[] = {
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{ 0x0290, 0x0000000f },
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{ 0x02a0, 0x00181224 },
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};
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static const struct reg_config dbsc_config4[] = {
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{ 0x0290, 0x00000010 },
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{ 0x02a0, 0xf004649b },
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{ 0x0290, 0x00000061 },
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{ 0x02a0, 0x0000006d },
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{ 0x0290, 0x00000001 },
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{ 0x02a0, 0x00000073 },
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{ 0x0020, 0x00000007 },
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{ 0x0024, 0x0f030a02 },
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{ 0x0030, 0x00000001 },
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{ 0x00b0, 0x00000000 },
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{ 0x0040, 0x0000000b },
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{ 0x0044, 0x00000008 },
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{ 0x0048, 0x00000000 },
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{ 0x0050, 0x0000000b },
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{ 0x0054, 0x000c000b },
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{ 0x0058, 0x00000027 },
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{ 0x005c, 0x0000001c },
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{ 0x0060, 0x00000006 },
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{ 0x0064, 0x00000020 },
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{ 0x0068, 0x00000008 },
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{ 0x006c, 0x0000000c },
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{ 0x0070, 0x00000009 },
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{ 0x0074, 0x00000012 },
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{ 0x0078, 0x000000d0 },
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{ 0x007c, 0x00140005 },
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{ 0x0080, 0x00050004 },
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{ 0x0084, 0x70233005 },
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{ 0x0088, 0x000c0000 },
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{ 0x008c, 0x00000200 },
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{ 0x0090, 0x00000040 },
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{ 0x0100, 0x00000001 },
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{ 0x00c0, 0x00020001 },
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{ 0x00c8, 0x20042004 },
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{ 0x0380, 0x00020002 },
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{ 0x0390, 0x0000001f },
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};
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static const struct reg_config dbsc_config5[] = {
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{ 0x0244, 0x00000011 },
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{ 0x0290, 0x00000003 },
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{ 0x02a0, 0x0300c561 },
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{ 0x0290, 0x00000023 },
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{ 0x02a0, 0x00fcdb60 },
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{ 0x0290, 0x00000011 },
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{ 0x02a0, 0x1000040b },
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{ 0x0290, 0x00000012 },
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{ 0x02a0, 0x9d9cbb66 },
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{ 0x0290, 0x00000013 },
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{ 0x02a0, 0x1a868400 },
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{ 0x0290, 0x00000014 },
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{ 0x02a0, 0x300214d8 },
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{ 0x0290, 0x00000015 },
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{ 0x02a0, 0x00000d70 },
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{ 0x0290, 0x00000016 },
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{ 0x02a0, 0x00000006 },
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{ 0x0290, 0x00000017 },
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{ 0x02a0, 0x00000018 },
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{ 0x0290, 0x0000001a },
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{ 0x02a0, 0x910035c7 },
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{ 0x0290, 0x00000004 },
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};
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static const struct reg_config dbsc_config6[] = {
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{ 0x0290, 0x00000001 },
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{ 0x02a0, 0x00000181 },
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{ 0x0018, 0x11000000 },
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{ 0x0290, 0x00000004 },
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};
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static const struct reg_config dbsc_config7[] = {
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{ 0x0290, 0x00000001 },
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{ 0x02a0, 0x0000fe01 },
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{ 0x0304, 0x00000000 },
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{ 0x00f4, 0x01004c20 },
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{ 0x00f8, 0x014a00b9 },
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{ 0x00e0, 0x00000140 },
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{ 0x00e4, 0x00081860 },
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{ 0x00e8, 0x00010000 },
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{ 0x0290, 0x00000004 },
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};
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static const struct reg_config dbsc_config8[] = {
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{ 0x0014, 0x00000001 },
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{ 0x0290, 0x00000010 },
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{ 0x02a0, 0xf00464db },
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{ 0x4008, 0x00000000 },
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{ 0x4000, 0x00000000 },
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{ 0x0010, 0x00000001 },
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{ 0x0280, 0x00000000 },
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};
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static const u32 dbsc3_0_base = DBSC3_0_BASE;
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static const u32 dbsc3_1_base = DBSC3_0_BASE + 0x10000;
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static const u32 prr_base = 0xff000044;
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const u16 prr_rev = readl(prr_base) & 0x7fff;
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unsigned int i;
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for (i = 0; i < ARRAY_SIZE(dbsc_config1); i++) {
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writel(dbsc_config1[i].val, dbsc3_0_base | dbsc_config1[i].off);
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writel(dbsc_config1[i].val, dbsc3_1_base | dbsc_config1[i].off);
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}
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dbsc_wait(0x2a0);
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for (i = 0; i < ARRAY_SIZE(dbsc_config2); i++) {
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writel(dbsc_config2[i].val, dbsc3_0_base | dbsc_config2[i].off);
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writel(dbsc_config2[i].val, dbsc3_1_base | dbsc_config2[i].off);
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}
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if (prr_rev == 0x4700) {
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for (i = 0; i < ARRAY_SIZE(dbsc_config3r0d0); i++) {
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writel(dbsc_config3r0d0[i].val,
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dbsc3_0_base | dbsc_config3r0d0[i].off);
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}
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for (i = 0; i < ARRAY_SIZE(dbsc_config3r0d1); i++) {
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writel(dbsc_config3r0d1[i].val,
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dbsc3_1_base | dbsc_config3r0d1[i].off);
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}
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} else if (prr_rev != 0x4710) {
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for (i = 0; i < ARRAY_SIZE(dbsc_config3r2); i++) {
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writel(dbsc_config3r2[i].val,
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dbsc3_0_base | dbsc_config3r2[i].off);
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writel(dbsc_config3r2[i].val,
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dbsc3_1_base | dbsc_config3r2[i].off);
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}
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}
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for (i = 0; i < ARRAY_SIZE(dbsc_config4); i++) {
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writel(dbsc_config4[i].val, dbsc3_0_base | dbsc_config4[i].off);
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writel(dbsc_config4[i].val, dbsc3_1_base | dbsc_config4[i].off);
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}
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dbsc_wait(0x240);
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for (i = 0; i < ARRAY_SIZE(dbsc_config5); i++) {
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writel(dbsc_config5[i].val, dbsc3_0_base | dbsc_config5[i].off);
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writel(dbsc_config5[i].val, dbsc3_1_base | dbsc_config5[i].off);
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}
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dbsc_wait(0x2a0);
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for (i = 0; i < ARRAY_SIZE(dbsc_config6); i++) {
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writel(dbsc_config6[i].val, dbsc3_0_base | dbsc_config6[i].off);
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writel(dbsc_config6[i].val, dbsc3_1_base | dbsc_config6[i].off);
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}
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dbsc_wait(0x2a0);
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for (i = 0; i < ARRAY_SIZE(dbsc_config7); i++) {
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writel(dbsc_config7[i].val, dbsc3_0_base | dbsc_config7[i].off);
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writel(dbsc_config7[i].val, dbsc3_1_base | dbsc_config7[i].off);
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}
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dbsc_wait(0x2a0);
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for (i = 0; i < ARRAY_SIZE(dbsc_config8); i++) {
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writel(dbsc_config8[i].val, dbsc3_0_base | dbsc_config8[i].off);
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writel(dbsc_config8[i].val, dbsc3_1_base | dbsc_config8[i].off);
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}
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}
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static void tpl_init_qspi(void)
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{
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mstp_clrbits_le32(MSTPSR9, SMSTPCR9, QSPI_MSTP917);
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static const u32 qspi_base = 0xe6b10000;
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writeb(0x08, qspi_base + 0x00);
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writeb(0x00, qspi_base + 0x01);
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writeb(0x06, qspi_base + 0x02);
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writeb(0x01, qspi_base + 0x0a);
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writeb(0x00, qspi_base + 0x0b);
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writeb(0x00, qspi_base + 0x0c);
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writeb(0x00, qspi_base + 0x0d);
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writeb(0x00, qspi_base + 0x0e);
|
|
|
|
writew(0xe080, qspi_base + 0x10);
|
|
|
|
writeb(0xc0, qspi_base + 0x18);
|
|
writeb(0x00, qspi_base + 0x18);
|
|
writeb(0x00, qspi_base + 0x08);
|
|
writeb(0x48, qspi_base + 0x00);
|
|
}
|
|
|
|
void board_init_f(ulong dummy)
|
|
{
|
|
mstp_clrbits_le32(MSTPSR1, SMSTPCR1, TMU0_MSTP125);
|
|
mstp_clrbits_le32(MSTPSR7, SMSTPCR7, SCIF0_MSTP721);
|
|
|
|
/*
|
|
* SD0 clock is set to 97.5MHz by default.
|
|
* Set SD2 to the 97.5MHz as well.
|
|
*/
|
|
writel(SD_97500KHZ, SD2CKCR);
|
|
|
|
tpl_init_sys();
|
|
tpl_init_pfc();
|
|
tpl_init_gpio();
|
|
tpl_init_lbsc();
|
|
tpl_init_dbsc();
|
|
tpl_init_qspi();
|
|
}
|
|
#endif
|
|
|
|
void spl_board_init(void)
|
|
{
|
|
/* UART clocks enabled and gd valid - init serial console */
|
|
preloader_console_init();
|
|
}
|
|
|
|
void board_boot_order(u32 *spl_boot_list)
|
|
{
|
|
#ifdef CONFIG_TPL_BUILD
|
|
const u32 jtag_magic = 0x1337c0de;
|
|
const u32 load_magic = 0xb33fc0de;
|
|
|
|
/*
|
|
* If JTAG probe sets special word at 0xe6300020, then it must
|
|
* put U-Boot into RAM and TPL will start it from RAM.
|
|
*/
|
|
if (readl(CONFIG_TPL_TEXT_BASE + 0x20) == jtag_magic) {
|
|
printf("JTAG boot detected!\n");
|
|
|
|
while (readl(CONFIG_TPL_TEXT_BASE + 0x24) != load_magic)
|
|
;
|
|
|
|
spl_boot_list[0] = BOOT_DEVICE_RAM;
|
|
spl_boot_list[1] = BOOT_DEVICE_NONE;
|
|
|
|
return;
|
|
}
|
|
#endif
|
|
|
|
/* Boot from SPI NOR with YMODEM UART fallback. */
|
|
spl_boot_list[0] = BOOT_DEVICE_SPI;
|
|
spl_boot_list[1] = BOOT_DEVICE_UART;
|
|
spl_boot_list[2] = BOOT_DEVICE_NONE;
|
|
}
|
|
|
|
void reset_cpu(ulong addr)
|
|
{
|
|
}
|