diff options
Diffstat (limited to 'board/freescale/p1_p2_rdb/ddr.c')
| -rw-r--r-- | board/freescale/p1_p2_rdb/ddr.c | 29 |
1 files changed, 24 insertions, 5 deletions
diff --git a/board/freescale/p1_p2_rdb/ddr.c b/board/freescale/p1_p2_rdb/ddr.c index d1e659b..37c4b0a 100644 --- a/board/freescale/p1_p2_rdb/ddr.c +++ b/board/freescale/p1_p2_rdb/ddr.c @@ -23,10 +23,13 @@ #include <common.h> #include <asm/mmu.h> #include <asm/immap_85xx.h> +#include <asm/processor.h> #include <asm/fsl_ddr_sdram.h> #include <asm/io.h> #include <asm/fsl_law.h> +DECLARE_GLOBAL_DATA_PTR; + extern void fsl_ddr_set_memctl_regs(const fsl_ddr_cfg_regs_t *regs, unsigned int ctrl_num); @@ -203,24 +206,40 @@ phys_size_t fixed_sdram (void) { sys_info_t sysinfo; char buf[32]; + fsl_ddr_cfg_regs_t *ddr_cfg_regs = NULL; + size_t ddr_size; + struct cpu_type *cpu; get_sys_info(&sysinfo); printf("Configuring DDR for %s MT/s data rate\n", strmhz(buf, sysinfo.freqDDRBus)); if(sysinfo.freqDDRBus <= DATARATE_400MHZ) - fsl_ddr_set_memctl_regs(&ddr_cfg_regs_400, 0); + ddr_cfg_regs = &ddr_cfg_regs_400; else if(sysinfo.freqDDRBus <= DATARATE_533MHZ) - fsl_ddr_set_memctl_regs(&ddr_cfg_regs_533, 0); + ddr_cfg_regs = &ddr_cfg_regs_533; else if(sysinfo.freqDDRBus <= DATARATE_667MHZ) - fsl_ddr_set_memctl_regs(&ddr_cfg_regs_667, 0); + ddr_cfg_regs = &ddr_cfg_regs_667; else if(sysinfo.freqDDRBus <= DATARATE_800MHZ) - fsl_ddr_set_memctl_regs(&ddr_cfg_regs_800, 0); + ddr_cfg_regs = &ddr_cfg_regs_800; else panic("Unsupported DDR data rate %s MT/s data rate\n", strmhz(buf, sysinfo.freqDDRBus)); - return CONFIG_SYS_SDRAM_SIZE * 1024 * 1024; + cpu = gd->cpu; + /* P1020 and it's derivatives support max 32bit DDR width */ + if(cpu->soc_ver == SVR_P1020 || cpu->soc_ver == SVR_P1020_E || + cpu->soc_ver == SVR_P1011 || cpu->soc_ver == SVR_P1011_E) { + ddr_cfg_regs->ddr_sdram_cfg |= SDRAM_CFG_32_BE; + ddr_cfg_regs->cs[0].bnds = 0x0000001F; + ddr_size = (CONFIG_SYS_SDRAM_SIZE * 1024 * 1024 / 2); + } + else + ddr_size = CONFIG_SYS_SDRAM_SIZE * 1024 * 1024; + + fsl_ddr_set_memctl_regs(ddr_cfg_regs, 0); + + return ddr_size; } phys_size_t initdram(int board_type) |