diff options
Diffstat (limited to 'cpu')
| -rw-r--r-- | cpu/ppc4xx/44x_spd_ddr2.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/cpu/ppc4xx/44x_spd_ddr2.c b/cpu/ppc4xx/44x_spd_ddr2.c index aa4a530..5214918 100644 --- a/cpu/ppc4xx/44x_spd_ddr2.c +++ b/cpu/ppc4xx/44x_spd_ddr2.c @@ -3083,6 +3083,16 @@ static void ppc440sp_sdram_register_dump(void) *---------------------------------------------------------------------------*/ long initdram(int board_type) { + /* + * Only run this SDRAM init code once. For NAND booting + * targets like Kilauea, we call initdram() early from the + * 4k NAND booting image (CONFIG_NAND_SPL) from nand_boot(). + * Later on the NAND U-Boot image runs (CONFIG_NAND_U_BOOT) + * which calls initdram() again. This time the controller + * mustn't be reconfigured again since we're already running + * from SDRAM. + */ +#if !defined(CONFIG_NAND_U_BOOT) || defined(CONFIG_NAND_SPL) unsigned long val; /* Set Memory Bank Configuration Registers */ @@ -3178,6 +3188,7 @@ long initdram(int board_type) #if defined(CONFIG_DDR_ECC) ecc_init(CFG_SDRAM_BASE, CFG_MBYTES_SDRAM << 20); #endif /* defined(CONFIG_DDR_ECC) */ +#endif /* !defined(CONFIG_NAND_U_BOOT) || defined(CONFIG_NAND_SPL) */ return (CFG_MBYTES_SDRAM << 20); } |