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adding saveenv-command for bananapi r2

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bananapi r2 can be booted from sd-card and emmc
saving the environment have to choose the storage
from which the device has booted

also the offset is set to 1MB to make sure env is written
to block "user data area" between uboot and first partition

https://www.fw-web.de/dokuwiki/lib/exe/fetch.php?cache=&media=bpi-r2:boot-structure.png

Signed-off-by: Frank Wunderlich <frank-w@public-files.de>
This commit is contained in:
Frank Wunderlich 2019-01-15 18:49:06 +01:00 committed by Tom Rini
parent 5d94158aa9
commit f3af98eca5
3 changed files with 23 additions and 0 deletions
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19
board/mediatek/mt7623/mt7623_rfb.c
View File

@ -14,3 +14,22 @@ int board_init(void)
return 0;
}
int mmc_get_boot_dev(void)
{
int g_mmc_devid = -1;
char *uflag = (char *)0x81DFFFF0;
if (strncmp(uflag,"eMMC",4)==0) {
g_mmc_devid = 0;
printf("Boot From Emmc(id:%d)\n\n", g_mmc_devid);
} else {
g_mmc_devid = 1;
printf("Boot From SD(id:%d)\n\n", g_mmc_devid);
}
return g_mmc_devid;
}
int mmc_get_env_dev(void)
{
return mmc_get_boot_dev();
}

1
configs/mt7623n_bpir2_defconfig
View File

@ -29,6 +29,7 @@ CONFIG_CMD_FS_GENERIC=y
CONFIG_OF_SEPARATE=y
CONFIG_DEFAULT_DEVICE_TREE="mt7623n-bananapi-bpi-r2"
CONFIG_NET_RANDOM_ETHADDR=y
CONFIG_ENV_IS_IN_MMC=y
CONFIG_REGMAP=y
CONFIG_SYSCON=y
# CONFIG_BLOCK_CACHE is not set

3
include/configs/mt7623.h
View File

@ -58,4 +58,7 @@
#define CONFIG_IPADDR 192.168.1.1
#define CONFIG_SERVERIP 192.168.1.2
#define CONFIG_SYS_MMC_ENV_DEV 0
#define CONFIG_ENV_OFFSET 0x100000
#endif