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imx: kontron-sl-mx8mm: Export current env config to devicetree

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This allows userspace tools like libubootenv to determine the
location of the currently used environment and select a
matching config.

Signed-off-by: Frieder Schrempf <frieder.schrempf@kontron.de>
This commit is contained in:
Frieder Schrempf
2025-10-07 08:58:28 -03:00
committed by Fabio Estevam
parent 83a18f8241
commit d31ca9e259
1 changed files with 34 additions and 2 deletions
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board/kontron/sl-mx8mm/sl-mx8mm.c
+34 -2
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@@ -14,6 +14,7 @@
#include <fdt_support.h>
#include <linux/errno.h>
#include <linux/kernel.h>
#include <mmc.h>
#include <net.h>
DECLARE_GLOBAL_DATA_PTR;
@@ -108,12 +109,43 @@ int fdt_set_usb_eth_addr(void *blob)
int ft_board_setup(void *blob, struct bd_info *bd)
{
int ret = fdt_set_usb_eth_addr(blob);
enum env_location env_loc;
enum boot_device boot_dev;
char env_str_sd[] = "sd-card";
char env_str_nor[] = "spi-nor";
char env_str_emmc[] = "emmc";
char *env_config_str;
int ret;
ret = fdt_set_usb_eth_addr(blob);
if (ret)
return ret;
return fdt_fixup_memory(blob, PHYS_SDRAM, gd->ram_size);
ret = fdt_fixup_memory(blob, PHYS_SDRAM, gd->ram_size);
if (ret)
return ret;
env_loc = env_get_location(0, 0);
if (env_loc == ENVL_MMC) {
boot_dev = get_boot_device();
if (boot_dev == SD2_BOOT)
env_config_str = env_str_sd;
else if (boot_dev == MMC1_BOOT)
env_config_str = env_str_emmc;
else
return 0;
} else if (env_loc == ENVL_SPI_FLASH) {
env_config_str = env_str_nor;
} else {
return 0;
}
/*
* Export a string to the devicetree that tells userspace tools like
* libubootenv where the environment is currently coming from.
*/
return fdt_find_and_setprop(blob, "/chosen", "u-boot,env-config",
env_config_str, strlen(env_config_str) + 1, 1);
}
int board_late_init(void)