To build RAMBOOT, replace this section the main Makefile pcm030_config \ pcm030_RAMBOOT_config \ pcm030_LOWBOOT_config: unconfig @ >include/config.h @[ -z "$(findstring LOWBOOT_,$@)" ] || \ { echo "CONFIG_SYS_TEXT_BASE = 0xFF000000" >board/phytec/pcm030/config.tmp ; \ echo "... with LOWBOOT configuration" ; \ } @[ -z "$(findstring RAMBOOT_,$@)" ] || \ { echo "CONFIG_SYS_TEXT_BASE = 0x00100000" >board/phycore_mpc5200b_tiny/\ config.tmp ; \ echo "... with RAMBOOT configuration" ; \ echo "... remember to make sure that MBAR is already \ switched to 0xF0000000 !!!" ; \ } @$(MKCONFIG) -a pcm030 ppc mpc5xxx pcm030 phytec @ echo "remember to set pcm030_REV to 0 for rev 1245.0 rev or to 1 for rev 1245.1" Alternative SDRAM settings: #define SDRAM_MODE 0x018D0000 #define SDRAM_EMODE 0x40090000 #define SDRAM_CONTROL 0x715f0f00 #define SDRAM_CONFIG1 0x73722930 #define SDRAM_CONFIG2 0x47770000 /* Settings for XLB = 99 MHz */ #define SDRAM_MODE 0x008D0000 #define SDRAM_EMODE 0x40090000 #define SDRAM_CONTROL 0x714b0f00 #define SDRAM_CONFIG1 0x63611730 #define SDRAM_CONFIG2 0x47670000 The board ships default with the environment in EEPROM Moving the environment to flash can be more reliable #define CONFIG_ENV_IS_IN_FLASH 1 #define CONFIG_ENV_ADDR (CONFIG_SYS_FLASH_BASE + 0xfe0000) #define CONFIG_ENV_SIZE 0x20000 #define CONFIG_ENV_SECT_SIZE 0x20000