diff options
Diffstat (limited to 'arch/powerpc')
| -rw-r--r-- | arch/powerpc/cpu/mpc85xx/cpu.c | 52 | ||||
| -rw-r--r-- | arch/powerpc/cpu/mpc8xxx/fsl_lbc.c | 10 | ||||
| -rw-r--r-- | arch/powerpc/include/asm/fsl_ddr_sdram.h | 13 | ||||
| -rw-r--r-- | arch/powerpc/include/asm/fsl_lbc.h | 4 |
4 files changed, 79 insertions, 0 deletions
diff --git a/arch/powerpc/cpu/mpc85xx/cpu.c b/arch/powerpc/cpu/mpc85xx/cpu.c index 55ee36d..bea8e10 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 */ diff --git a/arch/powerpc/cpu/mpc8xxx/fsl_lbc.c b/arch/powerpc/cpu/mpc8xxx/fsl_lbc.c index fcef40c..10fcd24 100644 --- a/arch/powerpc/cpu/mpc8xxx/fsl_lbc.c +++ b/arch/powerpc/cpu/mpc8xxx/fsl_lbc.c @@ -9,6 +9,16 @@ #include <common.h> #include <asm/fsl_lbc.h> +#ifdef CONFIG_MPC85xx +/* Boards should provide their own version of this if they use lbc sdram */ +void __sdram_init(void) +{ + /* Do nothing */ +} +void sdram_init(void) __attribute__((weak, alias("__sdram_init"))); +#endif + + void print_lbc_regs(void) { int i; diff --git a/arch/powerpc/include/asm/fsl_ddr_sdram.h b/arch/powerpc/include/asm/fsl_ddr_sdram.h index 17d4b31..8ceae18 100644 --- a/arch/powerpc/include/asm/fsl_ddr_sdram.h +++ b/arch/powerpc/include/asm/fsl_ddr_sdram.h @@ -214,6 +214,19 @@ typedef struct memctl_options_s { extern phys_size_t fsl_ddr_sdram(void); +/* + * The 85xx boards have a common prototype for fixed_sdram so put the + * declaration here. + */ +#ifdef CONFIG_MPC85xx +extern phys_size_t fixed_sdram(void); +#endif + +#if defined(CONFIG_DDR_ECC) +extern void ddr_enable_ecc(unsigned int dram_size); +#endif + + typedef struct fixed_ddr_parm{ int min_freq; int max_freq; diff --git a/arch/powerpc/include/asm/fsl_lbc.h b/arch/powerpc/include/asm/fsl_lbc.h index 82d24ab..fcf3371 100644 --- a/arch/powerpc/include/asm/fsl_lbc.h +++ b/arch/powerpc/include/asm/fsl_lbc.h @@ -16,6 +16,10 @@ #include <config.h> #include <common.h> +#ifdef CONFIG_MPC85xx +void sdram_init(void); +#endif + /* BR - Base Registers */ #define BR0 0x5000 /* Register offset to immr */ |