powerpc: mmc: Add corenet devices support in esdhc spl

Existing eSDHC SPL framework assumes booting from sd-image
with boot_format header which contains final u-boot Image
offset and size. No such header is present in case of
corenet devices like T1040 as corenet deivces use PBI-RCW
based intialization.

So, for corenet deives, SPL bootloader use values provided
at compilation time. These values can be defined in board
specific config file.

Signed-off-by: Priyanka Jain <Priyanka.Jain@freescale.com>
Acked-by: Pantelis Antoniou <panto@antoniou-consulting.com>

diff --git a/drivers/mmc/fsl_esdhc_spl.c b/drivers/mmc/fsl_esdhc_spl.c
index 65c52a2..8fc263f 100644 (file)
--- a/drivers/mmc/fsl_esdhc_spl.c
+++ b/drivers/mmc/fsl_esdhc_spl.c
@@ -42,6 +42,10 @@ void __noreturn mmc_boot(void)
                hang();
        }
 
+#ifdef CONFIG_FSL_CORENET
+       offset = CONFIG_SYS_MMC_U_BOOT_OFFS;
+       code_len = CONFIG_SYS_MMC_U_BOOT_SIZE;
+#else
        blklen = mmc->read_bl_len;
        tmp_buf = malloc(blklen);
        if (!tmp_buf) {
@@ -91,6 +95,7 @@ void __noreturn mmc_boot(void)
        /*
        * Load U-Boot image from mmc into RAM
        */
+#endif
        blk_start = ALIGN(offset, mmc->read_bl_len) / mmc->read_bl_len;
        blk_cnt = ALIGN(code_len, mmc->read_bl_len) / mmc->read_bl_len;
        err = mmc->block_dev.block_read(0, blk_start, blk_cnt,