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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 <config.h>
#include <env_internal.h>
#include <fdt_support.h>
#include <log.h>
#include <misc.h>
#include <mmc.h>
#include <asm/global_data.h>
#include <asm/arch/sys_proto.h>
#include <dm/device.h>
#include <dm/ofnode.h>
#include <dm/uclass.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;
}
/* board dependent setup after realloc */
int board_init(void)
{
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;
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_SYS_MMC_ENV_DEV), (-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;
}
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