diff options
Diffstat (limited to 'cpu/mpc83xx/spd_sdram.c')
| -rw-r--r-- | cpu/mpc83xx/spd_sdram.c | 74 |
1 files changed, 50 insertions, 24 deletions
diff --git a/cpu/mpc83xx/spd_sdram.c b/cpu/mpc83xx/spd_sdram.c index d9b8753..ee2d038 100644 --- a/cpu/mpc83xx/spd_sdram.c +++ b/cpu/mpc83xx/spd_sdram.c @@ -34,6 +34,30 @@ #include <asm/mmu.h> #include <spd_sdram.h> +void board_add_ram_info(int use_default) +{ + volatile immap_t *immap = (immap_t *) CFG_IMMR; + volatile ddr83xx_t *ddr = &immap->ddr; + + printf(" (DDR%d", ((ddr->sdram_cfg & SDRAM_CFG_SDRAM_TYPE_MASK) + >> SDRAM_CFG_SDRAM_TYPE_SHIFT) - 1); + + if (ddr->sdram_cfg & SDRAM_CFG_32_BE) + puts(", 32-bit"); + else + puts(", 64-bit"); + + if (ddr->sdram_cfg & SDRAM_CFG_ECC_EN) + puts(", ECC on)"); + else + puts(", ECC off)"); + +#if defined(CFG_LB_SDRAM) && defined(CFG_LBC_SDRAM_SIZE) + puts("\nSDRAM: "); + print_size (CFG_LBC_SDRAM_SIZE * 1024 * 1024, " (local bus)"); +#endif +} + #ifdef CONFIG_SPD_EEPROM DECLARE_GLOBAL_DATA_PTR; @@ -58,8 +82,8 @@ picos_to_clk(int picos) int clks; ddr_bus_clk = gd->ddr_clk >> 1; - clks = picos / ((1000000000 / ddr_bus_clk) * 1000); - if (picos % ((1000000000 / ddr_bus_clk) * 1000) != 0) + clks = picos / (1000000000 / (ddr_bus_clk / 1000)); + if (picos % (1000000000 / (ddr_bus_clk / 1000)) != 0) clks++; return clks; @@ -109,7 +133,7 @@ long int spd_sdram() unsigned int n_ranks; unsigned int odt_rd_cfg, odt_wr_cfg; unsigned char twr_clk, twtr_clk; - unsigned char sdram_type; + unsigned int sdram_type; unsigned int memsize; unsigned int law_size; unsigned char caslat, caslat_ctrl; @@ -137,7 +161,7 @@ long int spd_sdram() #endif /* Check the memory type */ if (spd.mem_type != SPD_MEMTYPE_DDR && spd.mem_type != SPD_MEMTYPE_DDR2) { - printf("DDR: Module mem type is %02X\n", spd.mem_type); + debug("DDR: Module mem type is %02X\n", spd.mem_type); return 0; } @@ -574,18 +598,21 @@ long int spd_sdram() /* Check DIMM data bus width */ if (spd.dataw_lsb == 0x20) { - burstlen = 0x03; /* 32 bit data bus, burst len is 8 */ - printf("\n DDR DIMM: data bus width is 32 bit"); + if (spd.mem_type == SPD_MEMTYPE_DDR) + burstlen = 0x03; /* 32 bit data bus, burst len is 8 */ + else + burstlen = 0x02; /* 32 bit data bus, burst len is 4 */ + debug("\n DDR DIMM: data bus width is 32 bit"); } else { burstlen = 0x02; /* Others act as 64 bit bus, burst len is 4 */ - printf("\n DDR DIMM: data bus width is 64 bit"); + debug("\n DDR DIMM: data bus width is 64 bit"); } /* Is this an ECC DDR chip? */ if (spd.config == 0x02) - printf(" with ECC\n"); + debug(" with ECC\n"); else - printf(" without ECC\n"); + debug(" without ECC\n"); /* Burst length is always 4 for 64 bit data bus, 8 for 32 bit data bus, Burst type is sequential @@ -624,7 +651,7 @@ long int spd_sdram() | (1 << (16 + 10)) /* DQS Differential disable */ | (add_lat << (16 + 3)) /* Additive Latency in EMRS1 */ | (mode_odt_enable << 16) /* ODT Enable in EMRS1 */ - | ((twr_clk >> 1) << 9) /* Write Recovery Autopre */ + | ((twr_clk - 1) << 9) /* Write Recovery Autopre */ | (caslat << 4) /* caslat */ | (burstlen << 0) /* Burst length */ ); @@ -693,11 +720,6 @@ long int spd_sdram() #ifdef CFG_DDR_SDRAM_CLK_CNTL /* Optional platform specific value */ ddr->sdram_clk_cntl = CFG_DDR_SDRAM_CLK_CNTL; -#else - /* SS_EN = 0, source synchronous disable - * CLK_ADJST = 0, MCK/MCK# is launched aligned with addr/cmd - */ - ddr->sdram_clk_cntl = 0x00000000; #endif debug("DDR:sdram_clk_cntl=0x%08x\n", ddr->sdram_clk_cntl); @@ -720,23 +742,27 @@ long int spd_sdram() * sdram_cfg[13] = 0 (8_BE =0, 4-beat bursts) */ if (spd.mem_type == SPD_MEMTYPE_DDR) - sdram_type = 2; + sdram_type = SDRAM_CFG_SDRAM_TYPE_DDR1; else - sdram_type = 3; + sdram_type = SDRAM_CFG_SDRAM_TYPE_DDR2; sdram_cfg = (0 - | (1 << 31) /* DDR enable */ - | (1 << 30) /* Self refresh */ - | (sdram_type << 24) /* SDRAM type */ + | SDRAM_CFG_MEM_EN /* DDR enable */ + | SDRAM_CFG_SREN /* Self refresh */ + | sdram_type /* SDRAM type */ ); /* sdram_cfg[3] = RD_EN - registered DIMM enable */ if (spd.mod_attr & 0x02) - sdram_cfg |= 0x10000000; + sdram_cfg |= SDRAM_CFG_RD_EN; /* The DIMM is 32bit width */ - if (spd.dataw_lsb == 0x20) - sdram_cfg |= 0x000C0000; + if (spd.dataw_lsb == 0x20) { + if (spd.mem_type == SPD_MEMTYPE_DDR) + sdram_cfg |= SDRAM_CFG_32_BE | SDRAM_CFG_8_BE; + if (spd.mem_type == SPD_MEMTYPE_DDR2) + sdram_cfg |= SDRAM_CFG_32_BE; + } ddrc_ecc_enable = 0; @@ -756,7 +782,7 @@ long int spd_sdram() debug("DDR:err_disable=0x%08x\n", ddr->err_disable); debug("DDR:err_sbe=0x%08x\n", ddr->err_sbe); #endif - printf(" DDRC ECC mode: %s\n", ddrc_ecc_enable ? "ON":"OFF"); + debug(" DDRC ECC mode: %s\n", ddrc_ecc_enable ? "ON":"OFF"); #if defined(CONFIG_DDR_2T_TIMING) /* |