Hi,

Thank you for your reply.

I have the U-boot source code of SAMSUNG EXYNOS SMDKV310 board. When i compiled the U-boot source code I got uboot.bin file and bl1.bin file. Actually bl1.bin file is extracted from the uboot.bin file by using the mkbl2 tool(tool's source code is present in the U-boot source itself)and used as a first stage bootloader.Uboot.bin file is used as a second stage bootloader.

"bl1.bin responsibility is to load the second stage bootloader from the sd card to SD RAM".*I have the doubt in the bl1.bin file *how the above mentioned transforming is done from the following device copy function.

#define SDMMC_ReadBlocks_eMMC_ByCPU(uNumOfBlks, uDstAddr) \ (((void(*)(u32, u32*))(*((u32 *)EXT_eMMC43_BL2_ByCPU_ADDRESS)))(uNumOfBlks, uDstAddr))

The above MACRO is the Physical adress which is mapped to IRAM

The above indirect function is present in the following source code path

board/samsung/smdkv310/lowlevel_init.S.

Actually I have to design the IROM code similar to SAMSUNG EXYNOS SOC. Please Help me in this.

Thanks

Balaji