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u-boot/board/renesas/silk/silk_spl.c
Harald Seiler 35b65dd8ef reset: Remove addr parameter from reset_cpu() 
Historically, the reset_cpu() function had an `addr` parameter which was
meant to pass in an address of the reset vector location, where the CPU
should reset to.  This feature is no longer used anywhere in U-Boot as
all reset_cpu() implementations now ignore the passed value.  Generic
code has been added which always calls reset_cpu() with `0` which means
this feature can no longer be used easily anyway.

Over time, many implementations seem to have "misunderstood" the
existence of this parameter as a way to customize/parameterize the reset
(e.g.  COLD vs WARM resets).  As this is not properly supported, the
code will almost always not do what it is intended to (because all
call-sites just call reset_cpu() with 0).

To avoid confusion and to clean up the codebase from unused left-overs
of the past, remove the `addr` parameter entirely.  Code which intends
to support different kinds of resets should be rewritten as a sysreset
driver instead.

This transformation was done with the following coccinelle patch:

    @@
    expression argvalue;
    @@
    - reset_cpu(argvalue)
    + reset_cpu()

    @@
    identifier argname;
    type argtype;
    @@
    - reset_cpu(argtype argname)
    + reset_cpu(void)
    { ... }

Signed-off-by: Harald Seiler <hws@denx.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
2021-03-02 14:03:02 -05:00

428 lines
9.8 KiB
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// SPDX-License-Identifier: GPL-2.0
/*
* board/renesas/silk/silk_spl.c
*
* Copyright (C) 2018 Marek Vasut <marek.vasut@gmail.com>
*/
#include <common.h>
#include <cpu_func.h>
#include <init.h>
#include <malloc.h>
#include <dm/platform_data/serial_sh.h>
#include <asm/processor.h>
#include <asm/mach-types.h>
#include <asm/io.h>
#include <linux/bitops.h>
#include <linux/errno.h>
#include <asm/arch/sys_proto.h>
#include <asm/gpio.h>
#include <asm/arch/rmobile.h>
#include <asm/arch/rcar-mstp.h>
#include <spl.h>
#define TMU0_MSTP125 BIT(25)
#define SCIF2_MSTP719 BIT(19)
#define QSPI_MSTP917 BIT(17)
#define SD1CKCR 0xE6150078
#define SD_97500KHZ 0x7
struct reg_config {
u16 off;
u32 val;
};
static void dbsc_wait(u16 reg)
{
static const u32 dbsc3_0_base = DBSC3_0_BASE;
while (!(readl(dbsc3_0_base + reg) & BIT(0)))
;
}
static void spl_init_sys(void)
{
u32 r0 = 0;
writel(0xa5a5a500, 0xe6020004);
writel(0xa5a5a500, 0xe6030004);
asm volatile(
/* ICIALLU - Invalidate I$ to PoU */
"mcr 15, 0, %0, cr7, cr5, 0 \n"
/* BPIALL - Invalidate branch predictors */
"mcr 15, 0, %0, cr7, cr5, 6 \n"
/* Set SCTLR[IZ] */
"mrc 15, 0, %0, cr1, cr0, 0 \n"
"orr %0, #0x1800 \n"
"mcr 15, 0, %0, cr1, cr0, 0 \n"
"isb sy \n"
:"=r"(r0));
}
static void spl_init_pfc(void)
{
static const struct reg_config pfc_with_unlock[] = {
{ 0x0090, 0x00018040 },
{ 0x0094, 0x00000000 },
{ 0x0098, 0x00000000 },
{ 0x0020, 0x94000000 },
{ 0x0024, 0x00000006 },
{ 0x0028, 0x40000000 },
{ 0x002c, 0x00000155 },
{ 0x0030, 0x00000002 },
{ 0x0034, 0x00000000 },
{ 0x0038, 0x00000000 },
{ 0x003c, 0x00000000 },
{ 0x0040, 0x60000000 },
{ 0x0044, 0x36dab6db },
{ 0x0048, 0x926da012 },
{ 0x004c, 0x0008c383 },
{ 0x0050, 0x00000000 },
{ 0x0054, 0x00000140 },
{ 0x0004, 0xffffffff },
{ 0x0008, 0x00ec3fff },
{ 0x000c, 0x5bffffff },
{ 0x0010, 0x01bfe1ff },
{ 0x0014, 0x5bffffff },
{ 0x0018, 0x0f4b200f },
{ 0x001c, 0x03ffffff },
};
static const struct reg_config pfc_without_unlock[] = {
{ 0x0100, 0x00000000 },
{ 0x0104, 0x4203fdf0 },
{ 0x0108, 0x00000000 },
{ 0x010c, 0x159007ff },
{ 0x0110, 0x80000000 },
{ 0x0114, 0x00de481f },
{ 0x0118, 0x00000000 },
};
static const struct reg_config pfc_with_unlock2[] = {
{ 0x0060, 0xffffffff },
{ 0x0064, 0xfffff000 },
{ 0x0068, 0x55555500 },
{ 0x006c, 0xffffff00 },
{ 0x0070, 0x00000000 },
};
static const u32 pfc_base = 0xe6060000;
unsigned int i;
for (i = 0; i < ARRAY_SIZE(pfc_with_unlock); i++) {
writel(~pfc_with_unlock[i].val, pfc_base);
writel(pfc_with_unlock[i].val,
pfc_base | pfc_with_unlock[i].off);
}
for (i = 0; i < ARRAY_SIZE(pfc_without_unlock); i++)
writel(pfc_without_unlock[i].val,
pfc_base | pfc_without_unlock[i].off);
for (i = 0; i < ARRAY_SIZE(pfc_with_unlock2); i++) {
writel(~pfc_with_unlock2[i].val, pfc_base);
writel(pfc_with_unlock2[i].val,
pfc_base | pfc_with_unlock2[i].off);
}
}
static void spl_init_gpio(void)
{
static const u16 gpio_offs[] = {
0x1000, 0x2000, 0x3000, 0x4000
};
static const struct reg_config gpio_set[] = {
{ 0x2000, 0x24000000 },
{ 0x4000, 0xa4000000 },
{ 0x5000, 0x0084c000 },
};
static const struct reg_config gpio_clr[] = {
{ 0x1000, 0x01000000 },
{ 0x2000, 0x24000000 },
{ 0x3000, 0x00000000 },
{ 0x4000, 0xa4000000 },
{ 0x5000, 0x00044380 },
};
static const u32 gpio_base = 0xe6050000;
unsigned int i;
for (i = 0; i < ARRAY_SIZE(gpio_offs); i++)
writel(0, gpio_base | 0x20 | gpio_offs[i]);
writel(BIT(23), gpio_base | 0x5020);
for (i = 0; i < ARRAY_SIZE(gpio_offs); i++)
writel(0, gpio_base | 0x00 | gpio_offs[i]);
writel(BIT(23), gpio_base | 0x5000);
for (i = 0; i < ARRAY_SIZE(gpio_set); i++)
writel(gpio_set[i].val, gpio_base | 0x08 | gpio_set[i].off);
for (i = 0; i < ARRAY_SIZE(gpio_clr); i++)
writel(gpio_clr[i].val, gpio_base | 0x04 | gpio_clr[i].off);
}
static void spl_init_lbsc(void)
{
static const struct reg_config lbsc_config[] = {
{ 0x00, 0x00000020 },
{ 0x08, 0x00002020 },
{ 0x30, 0x2a103320 },
{ 0x38, 0xff70ff70 },
};
static const u16 lbsc_offs[] = {
0x80, 0x84, 0x88, 0x8c, 0xa0, 0xc0, 0xc4, 0xc8
};
static const u32 lbsc_base = 0xfec00200;
unsigned int i;
for (i = 0; i < ARRAY_SIZE(lbsc_config); i++) {
writel(lbsc_config[i].val,
lbsc_base | lbsc_config[i].off);
writel(lbsc_config[i].val,
lbsc_base | (lbsc_config[i].off + 4));
}
for (i = 0; i < ARRAY_SIZE(lbsc_offs); i++)
writel(0, lbsc_base | lbsc_offs[i]);
}
static void spl_init_dbsc(void)
{
static const struct reg_config dbsc_config1[] = {
{ 0x0018, 0x21000000 },
{ 0x0018, 0x11000000 },
{ 0x0018, 0x10000000 },
{ 0x0280, 0x0000a55a },
{ 0x0290, 0x00000001 },
{ 0x02a0, 0x80000000 },
{ 0x0290, 0x00000004 },
};
static const struct reg_config dbsc_config2[] = {
{ 0x0290, 0x00000006 },
{ 0x02a0, 0x0005c000 },
};
static const struct reg_config dbsc_config3r2[] = {
{ 0x0290, 0x0000000f },
{ 0x02a0, 0x00181224 },
};
static const struct reg_config dbsc_config4[] = {
{ 0x0290, 0x00000010 },
{ 0x02a0, 0xf004649b },
{ 0x0290, 0x00000061 },
{ 0x02a0, 0x0000006d },
{ 0x0290, 0x00000001 },
{ 0x02a0, 0x00000073 },
{ 0x0020, 0x00000007 },
{ 0x0024, 0x0f030a02 },
{ 0x0030, 0x00000001 },
{ 0x00b0, 0x00000000 },
{ 0x0040, 0x00000009 },
{ 0x0044, 0x00000007 },
{ 0x0048, 0x00000000 },
{ 0x0050, 0x00000009 },
{ 0x0054, 0x000a0009 },
{ 0x0058, 0x00000021 },
{ 0x005c, 0x00000018 },
{ 0x0060, 0x00000005 },
{ 0x0064, 0x00000020 },
{ 0x0068, 0x00000007 },
{ 0x006c, 0x0000000a },
{ 0x0070, 0x00000009 },
{ 0x0074, 0x00000010 },
{ 0x0078, 0x000000ae },
{ 0x007c, 0x00140005 },
{ 0x0080, 0x00050004 },
{ 0x0084, 0x50213005 },
{ 0x0088, 0x000c0000 },
{ 0x008c, 0x00000200 },
{ 0x0090, 0x00000040 },
{ 0x0100, 0x00000001 },
{ 0x00c0, 0x00020001 },
{ 0x00c8, 0x20042004 },
{ 0x0380, 0x00020003 },
{ 0x0390, 0x0000001f },
};
static const struct reg_config dbsc_config5[] = {
{ 0x0244, 0x00000011 },
{ 0x0290, 0x00000003 },
{ 0x02a0, 0x0300c4e1 },
{ 0x0290, 0x00000023 },
{ 0x02a0, 0x00fcb6d0 },
{ 0x0290, 0x00000011 },
{ 0x02a0, 0x1000040b },
{ 0x0290, 0x00000012 },
{ 0x02a0, 0x85589955 },
{ 0x0290, 0x00000013 },
{ 0x02a0, 0x1a852400 },
{ 0x0290, 0x00000014 },
{ 0x02a0, 0x300210b4 },
{ 0x0290, 0x00000015 },
{ 0x02a0, 0x00000b50 },
{ 0x0290, 0x00000016 },
{ 0x02a0, 0x00000006 },
{ 0x0290, 0x00000017 },
{ 0x02a0, 0x00000010 },
{ 0x0290, 0x0000001a },
{ 0x02a0, 0x910035c7 },
{ 0x0290, 0x00000004 },
};
static const struct reg_config dbsc_config6[] = {
{ 0x0290, 0x00000001 },
{ 0x02a0, 0x00000181 },
{ 0x0018, 0x11000000 },
{ 0x0290, 0x00000004 },
};
static const struct reg_config dbsc_config7[] = {
{ 0x0290, 0x00000001 },
{ 0x02a0, 0x0000fe01 },
{ 0x0304, 0x00000000 },
{ 0x00f4, 0x01004c20 },
{ 0x00f8, 0x012c00be },
{ 0x00e0, 0x00000140 },
{ 0x00e4, 0x00081450 },
{ 0x00e8, 0x00010000 },
{ 0x0290, 0x00000004 },
};
static const struct reg_config dbsc_config8[] = {
{ 0x0014, 0x00000001 },
{ 0x0290, 0x00000010 },
{ 0x02a0, 0xf00464db },
{ 0x0010, 0x00000001 },
{ 0x0280, 0x00000000 },
};
static const u32 dbsc3_0_base = DBSC3_0_BASE;
unsigned int i;
for (i = 0; i < ARRAY_SIZE(dbsc_config1); i++)
writel(dbsc_config1[i].val, dbsc3_0_base | dbsc_config1[i].off);
dbsc_wait(0x2a0);
for (i = 0; i < ARRAY_SIZE(dbsc_config2); i++)
writel(dbsc_config2[i].val, dbsc3_0_base | dbsc_config2[i].off);
for (i = 0; i < ARRAY_SIZE(dbsc_config3r2); i++) {
writel(dbsc_config3r2[i].val,
dbsc3_0_base | dbsc_config3r2[i].off);
}
for (i = 0; i < ARRAY_SIZE(dbsc_config4); i++)
writel(dbsc_config4[i].val, dbsc3_0_base | dbsc_config4[i].off);
dbsc_wait(0x240);
for (i = 0; i < ARRAY_SIZE(dbsc_config5); i++)
writel(dbsc_config5[i].val, dbsc3_0_base | dbsc_config5[i].off);
dbsc_wait(0x2a0);
for (i = 0; i < ARRAY_SIZE(dbsc_config6); i++)
writel(dbsc_config6[i].val, dbsc3_0_base | dbsc_config6[i].off);
dbsc_wait(0x2a0);
for (i = 0; i < ARRAY_SIZE(dbsc_config7); i++)
writel(dbsc_config7[i].val, dbsc3_0_base | dbsc_config7[i].off);
dbsc_wait(0x2a0);
for (i = 0; i < ARRAY_SIZE(dbsc_config8); i++)
writel(dbsc_config8[i].val, dbsc3_0_base | dbsc_config8[i].off);
}
static void spl_init_qspi(void)
{
mstp_clrbits_le32(MSTPSR9, SMSTPCR9, QSPI_MSTP917);
static const u32 qspi_base = 0xe6b10000;
writeb(0x08, qspi_base + 0x00);
writeb(0x00, qspi_base + 0x01);
writeb(0x06, qspi_base + 0x02);
writeb(0x01, qspi_base + 0x0a);
writeb(0x00, qspi_base + 0x0b);
writeb(0x00, qspi_base + 0x0c);
writeb(0x00, qspi_base + 0x0d);
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, SCIF2_MSTP719);
/* Set SD1 to the 97.5MHz */
writel(SD_97500KHZ, SD1CKCR);
spl_init_sys();
spl_init_pfc();
spl_init_gpio();
spl_init_lbsc();
spl_init_dbsc();
spl_init_qspi();
}
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)
{
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 SPL will start it from RAM.
*/
if (readl(CONFIG_SPL_TEXT_BASE + 0x20) == jtag_magic) {
printf("JTAG boot detected!\n");
while (readl(CONFIG_SPL_TEXT_BASE + 0x24) != load_magic)
;
spl_boot_list[0] = BOOT_DEVICE_RAM;
spl_boot_list[1] = BOOT_DEVICE_NONE;
return;
}
/* 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(void)
{
}
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