diff options
Diffstat (limited to 'arch/powerpc/cpu/mpc85xx/cpu.c')
| -rw-r--r-- | arch/powerpc/cpu/mpc85xx/cpu.c | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/arch/powerpc/cpu/mpc85xx/cpu.c b/arch/powerpc/cpu/mpc85xx/cpu.c index 55ee36d0bc7..bea8e10af7e 100644 --- a/arch/powerpc/cpu/mpc85xx/cpu.c +++ b/arch/powerpc/cpu/mpc85xx/cpu.c @@ -34,6 +34,7 @@ #include <asm/io.h> #include <asm/mmu.h> #include <asm/fsl_law.h> +#include <asm/fsl_lbc.h> #include <post.h> #include <asm/processor.h> #include <asm/fsl_ddr_sdram.h> @@ -286,6 +287,57 @@ void mpc85xx_reginfo(void) print_lbc_regs(); } +/* Common ddr init for non-corenet fsl 85xx platforms */ +#ifndef CONFIG_FSL_CORENET +phys_size_t initdram(int board_type) +{ + phys_size_t dram_size = 0; + +#if defined(CONFIG_DDR_DLL) + { + ccsr_gur_t *gur = (void *)(CONFIG_SYS_MPC85xx_GUTS_ADDR); + unsigned int x = 10; + unsigned int i; + + /* + * Work around to stabilize DDR DLL + */ + out_be32(&gur->ddrdllcr, 0x81000000); + asm("sync;isync;msync"); + udelay(200); + while (in_be32(&gur->ddrdllcr) != 0x81000100) { + setbits_be32(&gur->devdisr, 0x00010000); + for (i = 0; i < x; i++) + ; + clrbits_be32(&gur->devdisr, 0x00010000); + x++; + } + } +#endif + +#if defined(CONFIG_SPD_EEPROM) || defined(CONFIG_DDR_SPD) + dram_size = fsl_ddr_sdram(); +#else + dram_size = fixed_sdram(); +#endif + dram_size = setup_ddr_tlbs(dram_size / 0x100000); + dram_size *= 0x100000; + +#if defined(CONFIG_DDR_ECC) && !defined(CONFIG_ECC_INIT_VIA_DDRCONTROLLER) + /* + * Initialize and enable DDR ECC. + */ + ddr_enable_ecc(dram_size); +#endif + + /* Some boards also have sdram on the lbc */ + sdram_init(); + + puts("DDR: "); + return dram_size; +} +#endif + #if CONFIG_POST & CONFIG_SYS_POST_MEMORY /* Board-specific functions defined in each board's ddr.c */ |