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// SPDX-License-Identifier: GPL-2.0-or-later OR BSD-3-Clause
/*
* Copyright (C) 2023, STMicroelectronics - All Rights Reserved
*/
#define LOG_CATEGORY LOGC_BOARD
#include <button.h>
#include <config.h>
#include <env_internal.h>
#include <fdt_support.h>
#include <led.h>
#include <log.h>
#include <misc.h>
#include <mmc.h>
#include <asm/global_data.h>
#include <asm/io.h>
#include <asm/arch/sys_proto.h>
#include <dm/device.h>
#include <dm/ofnode.h>
#include <dm/uclass.h>
#include <linux/delay.h>
/*
* Get a global data pointer
*/
DECLARE_GLOBAL_DATA_PTR;
int checkboard(void)
{
int ret;
u32 otp;
struct udevice *dev;
const char *fdt_compat;
int fdt_compat_len;
fdt_compat = ofnode_get_property(ofnode_root(), "compatible", &fdt_compat_len);
log_info("Board: stm32mp2 (%s)\n", fdt_compat && fdt_compat_len ? fdt_compat : "");
/* display the STMicroelectronics board identification */
if (CONFIG_IS_ENABLED(CMD_STBOARD)) {
ret = uclass_get_device_by_driver(UCLASS_MISC,
DM_DRIVER_GET(stm32mp_bsec),
&dev);
if (!ret)
ret = misc_read(dev, STM32_BSEC_SHADOW(BSEC_OTP_BOARD),
&otp, sizeof(otp));
if (ret > 0 && otp)
log_info("Board: MB%04x Var%d.%d Rev.%c-%02d\n",
otp >> 16,
(otp >> 12) & 0xF,
(otp >> 4) & 0xF,
((otp >> 8) & 0xF) - 1 + 'A',
otp & 0xF);
}
return 0;
}
static int get_led(struct udevice **dev, char *led_string)
{
const char *led_name;
int ret;
led_name = ofnode_conf_read_str(led_string);
if (!led_name) {
log_debug("could not find %s config string\n", led_string);
return -ENOENT;
}
ret = led_get_by_label(led_name, dev);
if (ret) {
log_debug("get=%d\n", ret);
return ret;
}
return 0;
}
static int setup_led(enum led_state_t cmd)
{
struct udevice *dev;
int ret;
if (!CONFIG_IS_ENABLED(LED))
return 0;
ret = get_led(&dev, "u-boot,boot-led");
if (ret)
return ret;
ret = led_set_state(dev, cmd);
return ret;
}
static void check_user_button(void)
{
struct udevice *button;
int i;
if (!IS_ENABLED(CONFIG_CMD_STM32PROG) || !IS_ENABLED(CONFIG_BUTTON))
return;
if (button_get_by_label("User-2", &button))
return;
for (i = 0; i < 21; ++i) {
if (button_get_state(button) != BUTTON_ON)
return;
if (i < 20)
mdelay(50);
}
log_notice("entering download mode...\n");
clrsetbits_le32(TAMP_BOOT_CONTEXT, TAMP_BOOT_FORCED_MASK, BOOT_STM32PROG);
}
/* board dependent setup after realloc */
int board_init(void)
{
setup_led(LEDST_ON);
check_user_button();
return 0;
}
enum env_location env_get_location(enum env_operation op, int prio)
{
u32 bootmode = get_bootmode();
if (prio)
return ENVL_UNKNOWN;
switch (bootmode & TAMP_BOOT_DEVICE_MASK) {
case BOOT_FLASH_SD:
case BOOT_FLASH_EMMC:
if (CONFIG_IS_ENABLED(ENV_IS_IN_MMC))
return ENVL_MMC;
else
return ENVL_NOWHERE;
case BOOT_FLASH_NAND:
case BOOT_FLASH_SPINAND:
if (CONFIG_IS_ENABLED(ENV_IS_IN_UBI))
return ENVL_UBI;
else
return ENVL_NOWHERE;
case BOOT_FLASH_NOR:
if (CONFIG_IS_ENABLED(ENV_IS_IN_SPI_FLASH))
return ENVL_SPI_FLASH;
else
return ENVL_NOWHERE;
default:
return ENVL_NOWHERE;
}
}
int mmc_get_boot(void)
{
struct udevice *dev;
u32 boot_mode = get_bootmode();
unsigned int instance = (boot_mode & TAMP_BOOT_INSTANCE_MASK) - 1;
char cmd[20];
const u32 sdmmc_addr[] = {
STM32_SDMMC1_BASE,
STM32_SDMMC2_BASE,
STM32_SDMMC3_BASE
};
if (instance > ARRAY_SIZE(sdmmc_addr))
return 0;
/* search associated sdmmc node in devicetree */
snprintf(cmd, sizeof(cmd), "mmc@%x", sdmmc_addr[instance]);
if (uclass_get_device_by_name(UCLASS_MMC, cmd, &dev)) {
log_err("mmc%d = %s not found in device tree!\n", instance, cmd);
return 0;
}
return dev_seq(dev);
};
int mmc_get_env_dev(void)
{
const int mmc_env_dev = CONFIG_IS_ENABLED(ENV_IS_IN_MMC, (CONFIG_ENV_MMC_DEVICE_INDEX), (-1));
if (mmc_env_dev >= 0)
return mmc_env_dev;
/* use boot instance to select the correct mmc device identifier */
return mmc_get_boot();
}
int board_late_init(void)
{
const void *fdt_compat;
int fdt_compat_len;
char dtb_name[256];
int buf_len;
if (IS_ENABLED(CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG)) {
fdt_compat = fdt_getprop(gd->fdt_blob, 0, "compatible",
&fdt_compat_len);
if (fdt_compat && fdt_compat_len) {
if (strncmp(fdt_compat, "st,", 3) != 0) {
env_set("board_name", fdt_compat);
} else {
env_set("board_name", fdt_compat + 3);
buf_len = sizeof(dtb_name);
strlcpy(dtb_name, fdt_compat + 3, buf_len);
buf_len -= strlen(fdt_compat + 3);
strlcat(dtb_name, ".dtb", buf_len);
env_set("fdtfile", dtb_name);
}
}
}
return 0;
}
void board_quiesce_devices(void)
{
setup_led(LEDST_OFF);
}
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