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board: stm32mp1: Add env_ext4_get_dev_part() and env_ext4_get_intf()

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This allows to :
- select the current device to save the environment file
- select the correct EXT4 boot device instance
  and partition to save the environment file.

For EXT4, device is mmc, device instance is 0 for sdcard or 1 for eMMC.
The partition is set to "auto" to select the first partition with
bootable flag.

Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
This commit is contained in:
Patrice Chotard 2019-05-02 18:36:01 +02:00
parent d319edcaee
commit 7f90cd6150
1 changed files with 24 additions and 0 deletions
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24
board/st/stm32mp1/stm32mp1.c
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@ -19,6 +19,7 @@
#include <asm/io.h>
#include <asm/gpio.h>
#include <asm/arch/stm32.h>
#include <asm/arch/sys_proto.h>
#include <power/regulator.h>
#include <usb/dwc2_udc.h>
@ -505,6 +506,29 @@ void board_quiesce_devices(void)
setup_led(LEDST_OFF);
}
#if defined(CONFIG_ENV_IS_IN_EXT4)
const char *env_ext4_get_intf(void)
{
u32 bootmode = get_bootmode();
switch (bootmode & TAMP_BOOT_DEVICE_MASK) {
case BOOT_FLASH_SD:
case BOOT_FLASH_EMMC:
return "mmc";
default:
return "";
}
}
const char *env_ext4_get_dev_part(void)
{
static char *const dev_part[] = {"0:auto", "1:auto", "2:auto"};
u32 bootmode = get_bootmode();
return dev_part[(bootmode & TAMP_BOOT_INSTANCE_MASK) - 1];
}
#endif
#ifdef CONFIG_SYS_MTDPARTS_RUNTIME
#define MTDPARTS_LEN 256