diff options
Diffstat (limited to 'nand_spl/board/freescale/p1010rdb/nand_boot.c')
| -rw-r--r-- | nand_spl/board/freescale/p1010rdb/nand_boot.c | 77 |
1 files changed, 43 insertions, 34 deletions
diff --git a/nand_spl/board/freescale/p1010rdb/nand_boot.c b/nand_spl/board/freescale/p1010rdb/nand_boot.c index 16eeb61d8..9c356901b 100644 --- a/nand_spl/board/freescale/p1010rdb/nand_boot.c +++ b/nand_spl/board/freescale/p1010rdb/nand_boot.c @@ -27,51 +27,61 @@ #include <asm/immap_85xx.h> #include <asm/fsl_ddr_sdram.h> #include <asm/fsl_law.h> +#include <asm/global_data.h> -#define udelay(x) { int j; for (j = 0; j < x * 10000; j++) isync(); } +DECLARE_GLOBAL_DATA_PTR; unsigned long ddr_freq_mhz; void sdram_init(void) { ccsr_ddr_t *ddr = (ccsr_ddr_t *)CONFIG_SYS_MPC85xx_DDR_ADDR; + /* mask off E bit */ + u32 svr = SVR_SOC_VER(mfspr(SPRN_SVR)); - out_be32(&ddr->sdram_cfg, CONFIG_SYS_DDR_CONTROL | SDRAM_CFG_32_BE); - out_be32(&ddr->cs0_bnds, CONFIG_SYS_DDR_CS0_BNDS); - out_be32(&ddr->cs0_config, CONFIG_SYS_DDR_CS0_CONFIG); - out_be32(&ddr->sdram_cfg_2, CONFIG_SYS_DDR_CONTROL_2); - out_be32(&ddr->sdram_data_init, CONFIG_SYS_DDR_DATA_INIT); + __raw_writel(CONFIG_SYS_DDR_CONTROL | SDRAM_CFG_32_BE, &ddr->sdram_cfg); + __raw_writel(CONFIG_SYS_DDR_CS0_BNDS, &ddr->cs0_bnds); + __raw_writel(CONFIG_SYS_DDR_CS0_CONFIG, &ddr->cs0_config); + __raw_writel(CONFIG_SYS_DDR_CONTROL_2, &ddr->sdram_cfg_2); + __raw_writel(CONFIG_SYS_DDR_DATA_INIT, &ddr->sdram_data_init); if (ddr_freq_mhz < 700) { - out_be32(&ddr->timing_cfg_3, CONFIG_SYS_DDR_TIMING_3_667); - out_be32(&ddr->timing_cfg_0, CONFIG_SYS_DDR_TIMING_0_667); - out_be32(&ddr->timing_cfg_1, CONFIG_SYS_DDR_TIMING_1_667); - out_be32(&ddr->timing_cfg_2, CONFIG_SYS_DDR_TIMING_2_667); - out_be32(&ddr->sdram_mode, CONFIG_SYS_DDR_MODE_1_667); - out_be32(&ddr->sdram_mode_2, CONFIG_SYS_DDR_MODE_2_667); - out_be32(&ddr->sdram_interval, CONFIG_SYS_DDR_INTERVAL_667); - out_be32(&ddr->sdram_clk_cntl, CONFIG_SYS_DDR_CLK_CTRL_667); - out_be32(&ddr->ddr_wrlvl_cntl, - CONFIG_SYS_DDR_WRLVL_CONTROL_667); + __raw_writel(CONFIG_SYS_DDR_TIMING_3_667, &ddr->timing_cfg_3); + __raw_writel(CONFIG_SYS_DDR_TIMING_0_667, &ddr->timing_cfg_0); + __raw_writel(CONFIG_SYS_DDR_TIMING_1_667, &ddr->timing_cfg_1); + __raw_writel(CONFIG_SYS_DDR_TIMING_2_667, &ddr->timing_cfg_2); + __raw_writel(CONFIG_SYS_DDR_MODE_1_667, &ddr->sdram_mode); + __raw_writel(CONFIG_SYS_DDR_MODE_2_667, &ddr->sdram_mode_2); + __raw_writel(CONFIG_SYS_DDR_INTERVAL_667, &ddr->sdram_interval); + __raw_writel(CONFIG_SYS_DDR_CLK_CTRL_667, &ddr->sdram_clk_cntl); + __raw_writel(CONFIG_SYS_DDR_WRLVL_CONTROL_667, &ddr->ddr_wrlvl_cntl); } else { - out_be32(&ddr->timing_cfg_3, CONFIG_SYS_DDR_TIMING_3_800); - out_be32(&ddr->timing_cfg_0, CONFIG_SYS_DDR_TIMING_0_800); - out_be32(&ddr->timing_cfg_1, CONFIG_SYS_DDR_TIMING_1_800); - out_be32(&ddr->timing_cfg_2, CONFIG_SYS_DDR_TIMING_2_800); - out_be32(&ddr->sdram_mode, CONFIG_SYS_DDR_MODE_1_800); - out_be32(&ddr->sdram_mode_2, CONFIG_SYS_DDR_MODE_2_800); - out_be32(&ddr->sdram_interval, CONFIG_SYS_DDR_INTERVAL_800); - out_be32(&ddr->sdram_clk_cntl, CONFIG_SYS_DDR_CLK_CTRL_800); - out_be32(&ddr->ddr_wrlvl_cntl, - CONFIG_SYS_DDR_WRLVL_CONTROL_800); + __raw_writel(CONFIG_SYS_DDR_TIMING_3_800, &ddr->timing_cfg_3); + __raw_writel(CONFIG_SYS_DDR_TIMING_0_800, &ddr->timing_cfg_0); + __raw_writel(CONFIG_SYS_DDR_TIMING_1_800, &ddr->timing_cfg_1); + __raw_writel(CONFIG_SYS_DDR_TIMING_2_800, &ddr->timing_cfg_2); + __raw_writel(CONFIG_SYS_DDR_MODE_1_800, &ddr->sdram_mode); + __raw_writel(CONFIG_SYS_DDR_MODE_2_800, &ddr->sdram_mode_2); + __raw_writel(CONFIG_SYS_DDR_INTERVAL_800, &ddr->sdram_interval); + __raw_writel(CONFIG_SYS_DDR_CLK_CTRL_800, &ddr->sdram_clk_cntl); + __raw_writel(CONFIG_SYS_DDR_WRLVL_CONTROL_800, &ddr->ddr_wrlvl_cntl); } - out_be32(&ddr->timing_cfg_4, CONFIG_SYS_DDR_TIMING_4); - out_be32(&ddr->timing_cfg_5, CONFIG_SYS_DDR_TIMING_5); - out_be32(&ddr->ddr_zq_cntl, CONFIG_SYS_DDR_ZQ_CONTROL); + __raw_writel(CONFIG_SYS_DDR_TIMING_4, &ddr->timing_cfg_4); + __raw_writel(CONFIG_SYS_DDR_TIMING_5, &ddr->timing_cfg_5); + __raw_writel(CONFIG_SYS_DDR_ZQ_CONTROL, &ddr->ddr_zq_cntl); - /* mimic 500us delay, with busy isync() loop */ - udelay(100); + /* P1014 and it's derivatives support max 16bit DDR width */ + if (svr == SVR_P1014) { + __raw_writel(ddr->sdram_cfg & ~SDRAM_CFG_DBW_MASK, &ddr->sdram_cfg); + __raw_writel(ddr->sdram_cfg | SDRAM_CFG_16_BE, &ddr->sdram_cfg); + /* For CS0_BNDS we divide the start and end address by 2, so we can just + * shift the entire register to achieve the desired result and the mask + * the value so we don't write reserved fields */ + __raw_writel((CONFIG_SYS_DDR_CS0_BNDS >> 1) & 0x0fff0fff, &ddr->cs0_bnds); + } + + udelay(500); /* Let the controller go */ out_be32(&ddr->sdram_cfg, in_be32(&ddr->sdram_cfg) | SDRAM_CFG_MEM_EN); @@ -82,20 +92,19 @@ void sdram_init(void) void board_init_f(ulong bootflag) { u32 plat_ratio, ddr_ratio; - unsigned long bus_clk; 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; ddr_ratio = in_be32(&gur->porpllsr) & MPC85xx_PORPLLSR_DDR_RATIO; ddr_ratio = ddr_ratio >> MPC85xx_PORPLLSR_DDR_RATIO_SHIFT; ddr_freq_mhz = (CONFIG_SYS_CLK_FREQ * ddr_ratio) / 0x1000000; NS16550_init((NS16550_t)CONFIG_SYS_NS16550_COM1, - bus_clk / 16 / CONFIG_BAUDRATE); + gd->bus_clk / 16 / CONFIG_BAUDRATE); puts("\nNAND boot... "); |