diff options
Diffstat (limited to 'nand_spl/board/freescale/p1023rds/nand_boot.c')
| -rw-r--r-- | nand_spl/board/freescale/p1023rds/nand_boot.c | 19 |
1 files changed, 15 insertions, 4 deletions
diff --git a/nand_spl/board/freescale/p1023rds/nand_boot.c b/nand_spl/board/freescale/p1023rds/nand_boot.c index 0065c876d..6ab1f5037 100644 --- a/nand_spl/board/freescale/p1023rds/nand_boot.c +++ b/nand_spl/board/freescale/p1023rds/nand_boot.c @@ -25,6 +25,10 @@ #include <asm/io.h> #include <nand.h> #include <asm/fsl_law.h> +#include <asm/fsl_ddr_sdram.h> +#include <asm/global_data.h> + +DECLARE_GLOBAL_DATA_PTR; /* Fixed sdram init -- doesn't use serial presence detect. */ void sdram_init(void) @@ -53,20 +57,27 @@ void sdram_init(void) out_be32(&ddr->ddr_wrlvl_cntl, CONFIG_SYS_DDR_WRLVL_CNTL); out_be32(&ddr->ddr_cdr1, CONFIG_SYS_DDR_CDR_1); out_be32(&ddr->ddr_cdr2, CONFIG_SYS_DDR_CDR_2); - out_be32(&ddr->sdram_cfg, CONFIG_SYS_DDR_CONTROL); + /* Set, but do not enable the memory */ + out_be32(&ddr->sdram_cfg, CONFIG_SYS_DDR_CONTROL & ~SDRAM_CFG_MEM_EN); + + asm volatile("sync;isync"); + udelay(500); + + /* Let the controller go */ + out_be32(&ddr->sdram_cfg, in_be32(&ddr->sdram_cfg) | SDRAM_CFG_MEM_EN); } void board_init_f(ulong bootflag) { - u32 plat_ratio, bus_clk; + u32 plat_ratio; ccsr_gur_t *gur = (void *)CONFIG_SYS_MPC85xx_GUTS_ADDR; /* initialize selected port with appropriate baud rate */ plat_ratio = in_be32(&gur->porpllsr) & MPC85xx_PORPLLSR_PLAT_RATIO; plat_ratio >>= 1; - bus_clk = CONFIG_SYS_CLK_FREQ * plat_ratio; + gd->bus_clk = CONFIG_SYS_CLK_FREQ * plat_ratio; NS16550_init((NS16550_t)CONFIG_SYS_NS16550_COM1, - bus_clk / 16 / CONFIG_BAUDRATE); + gd->bus_clk / 16 / CONFIG_BAUDRATE); puts("\nNAND boot... "); /* Initialize the DDR3 */ |