diff options
| author | Pali Rohár <pali@kernel.org> | 2022-04-03 00:16:59 +0200 |
|---|---|---|
| committer | Priyanka Jain <priyanka.jain@nxp.com> | 2022-04-26 17:18:39 +0530 |
| commit | 0f58f033d410e91466723bb288d555c710de49fc (patch) | |
| tree | f96480afd671ba41d58d51030407f22291c5444d | |
| parent | efd9914ffa05dc89f7d2830267b27ba2f06ecad1 (diff) | |
mmc: fsl_esdhc_spl: pre-PBL: check for BOOT signature instead of MBR/DBR
Pre-PBL BootROMs (MPC8536E, MPC8569E, P2020, P1011, P1012, P1013, P1020,
P1021, P1022) require custom BOOT signature on sector 0 and MBR/DBR
signature is not required at all.
So add check for BOOT signature and remove check for MBR/DBR.
This allows U-Boot SPL to load proper U-Boot on pre-PBL BootROMs platforms
also from SD cards which do not have MBR/DBR signature on sector 0.
Signed-off-by: Pali Rohár <pali@kernel.org>
Reviewed-by: Priyanka Jain <priyanka.jain@nxp.com>
| -rw-r--r-- | drivers/mmc/fsl_esdhc_spl.c | 27 |
1 files changed, 25 insertions, 2 deletions
diff --git a/drivers/mmc/fsl_esdhc_spl.c b/drivers/mmc/fsl_esdhc_spl.c index bee76572ac6..109f558dcad 100644 --- a/drivers/mmc/fsl_esdhc_spl.c +++ b/drivers/mmc/fsl_esdhc_spl.c @@ -14,6 +14,8 @@ * on SDCard, so we must read the MBR to get the start address and code * length of the u-boot image, then calculate the address of the env. */ +#define ESDHC_BOOT_SIGNATURE_OFF 0x40 +#define ESDHC_BOOT_SIGNATURE 0x424f4f54 #define ESDHC_BOOT_IMAGE_SIZE 0x48 #define ESDHC_BOOT_IMAGE_ADDR 0x50 #define MBRDBR_BOOT_SIG_55 0x1fe @@ -61,6 +63,9 @@ void __noreturn mmc_boot(void) uchar *tmp_buf; u32 blklen; uchar val; +#ifndef CONFIG_SPL_FSL_PBL + u32 val32; +#endif uint i, byte_num; #endif u32 offset, code_len; @@ -94,16 +99,34 @@ void __noreturn mmc_boot(void) hang(); } +#ifdef CONFIG_SPL_FSL_PBL val = *(tmp_buf + MBRDBR_BOOT_SIG_55); if (0x55 != val) { - puts("spl: mmc signature is not valid!!\n"); + puts("spl: mmc MBR/DBR signature is not valid!!\n"); hang(); } val = *(tmp_buf + MBRDBR_BOOT_SIG_AA); if (0xAA != val) { - puts("spl: mmc signature is not valid!!\n"); + puts("spl: mmc MBR/DBR signature is not valid!!\n"); hang(); } +#else + /* + * Booting from On-Chip ROM (eSDHC or eSPI), Document Number: AN3659, Rev. 2, 06/2012. + * Pre-PBL BootROMs (MPC8536E, MPC8569E, P2020, P1011, P1012, P1013, P1020, P1021, P1022) + * require custom BOOT signature on sector 0 and MBR/DBR signature is not required at all. + */ + byte_num = 4; + val32 = 0; + for (i = 0; i < byte_num; i++) { + val = *(tmp_buf + ESDHC_BOOT_SIGNATURE_OFF + i); + val32 = (val32 << 8) + val; + } + if (val32 != ESDHC_BOOT_SIGNATURE) { + puts("spl: mmc BOOT signature is not valid!!\n"); + hang(); + } +#endif byte_num = 4; offset = 0; |