The MPC8536E is capable of booting form NAND/eSDHC/eSPI, this patchset implements these three bootup methods in a unified way - all of these use the general cpu/mpc85xx/start.S, and load the second stage image to L2SRAM which lets us use the SPD to initialize the SDRAM.
[PATCH 01/10] mkconfig: parse top level makefile target to multiple config targets [PATCH 02/10] NAND boot: change NAND loader's relocate SP to CONFIG param [PATCH 03/10] Add L2SRAM Register's macro definition
[PATCH 04/10] 85xx: add boot from NAND/eSDHC/eSPI support [PATCH 05/10] NAND boot: MPC8536DS support [PATCH 06/10] On-chip ROM boot: MPC8536DS support
Add description for the different boot method: [PATCH 07/10] Add README.mpc8536ds
The follow three patches implement save env to SDCard: [PATCH 08/10] Make mmc init come before env_relocate [PATCH 09/10] Add support for save environment variable to MMC/SD card [PATCH 10/10] Get the address of env on the SDCard