diff options
Diffstat (limited to 'board/isee')
| -rw-r--r-- | board/isee/igep00x0/igep00x0.c | 71 |
1 files changed, 53 insertions, 18 deletions
diff --git a/board/isee/igep00x0/igep00x0.c b/board/isee/igep00x0/igep00x0.c index 5dfb7d2..b36709c 100644 --- a/board/isee/igep00x0/igep00x0.c +++ b/board/isee/igep00x0/igep00x0.c @@ -17,6 +17,10 @@ #include <asm/arch/mux.h> #include <asm/arch/sys_proto.h> #include <asm/mach-types.h> +#include <linux/mtd/nand.h> +#include <linux/mtd/nand.h> +#include <linux/mtd/onenand.h> +#include <jffs2/load_kernel.h> #include "igep00x0.h" DECLARE_GLOBAL_DATA_PTR; @@ -56,7 +60,25 @@ U_BOOT_DEVICE(igep_uart) = { */ int board_init(void) { - gpmc_init(); /* in SRAM or SDRAM, finish GPMC */ + int loops = 100; + + /* find out flash memory type, assume NAND first */ + gpmc_cs0_flash = MTD_DEV_TYPE_NAND; + gpmc_init(); + + /* Issue a RESET and then READID */ + writeb(NAND_CMD_RESET, &gpmc_cfg->cs[0].nand_cmd); + writeb(NAND_CMD_STATUS, &gpmc_cfg->cs[0].nand_cmd); + while ((readl(&gpmc_cfg->cs[0].nand_dat) & NAND_STATUS_READY) + != NAND_STATUS_READY) { + udelay(1); + if (--loops == 0) { + gpmc_cs0_flash = MTD_DEV_TYPE_ONENAND; + gpmc_init(); /* reinitialize for OneNAND */ + break; + } + } + /* boot param addr */ gd->bd->bi_boot_params = (OMAP34XX_SDRC_CS0 + 0x100); @@ -75,29 +97,42 @@ int board_init(void) */ void get_board_mem_timings(struct board_sdrc_timings *timings) { - timings->mr = MICRON_V_MR_165; -#ifdef CONFIG_BOOT_NAND - timings->mcfg = MICRON_V_MCFG_200(256 << 20); - timings->ctrla = MICRON_V_ACTIMA_200; - timings->ctrlb = MICRON_V_ACTIMB_200; - timings->rfr_ctrl = SDP_3430_SDRC_RFR_CTRL_200MHz; -#else - if (get_cpu_family() == CPU_OMAP34XX) { - timings->mcfg = NUMONYX_V_MCFG_165(256 << 20); - timings->ctrla = NUMONYX_V_ACTIMA_165; - timings->ctrlb = NUMONYX_V_ACTIMB_165; - timings->rfr_ctrl = SDP_3430_SDRC_RFR_CTRL_165MHz; + int mfr, id, err = identify_nand_chip(&mfr, &id); - } else { - timings->mcfg = NUMONYX_V_MCFG_200(256 << 20); - timings->ctrla = NUMONYX_V_ACTIMA_200; - timings->ctrlb = NUMONYX_V_ACTIMB_200; + timings->mr = MICRON_V_MR_165; + if (!err && mfr == NAND_MFR_MICRON) { + timings->mcfg = MICRON_V_MCFG_200(256 << 20); + timings->ctrla = MICRON_V_ACTIMA_200; + timings->ctrlb = MICRON_V_ACTIMB_200; timings->rfr_ctrl = SDP_3430_SDRC_RFR_CTRL_200MHz; + gpmc_cs0_flash = MTD_DEV_TYPE_NAND; + } else { + if (get_cpu_family() == CPU_OMAP34XX) { + timings->mcfg = NUMONYX_V_MCFG_165(256 << 20); + timings->ctrla = NUMONYX_V_ACTIMA_165; + timings->ctrlb = NUMONYX_V_ACTIMB_165; + timings->rfr_ctrl = SDP_3430_SDRC_RFR_CTRL_165MHz; + } else { + timings->mcfg = NUMONYX_V_MCFG_200(256 << 20); + timings->ctrla = NUMONYX_V_ACTIMA_200; + timings->ctrlb = NUMONYX_V_ACTIMB_200; + timings->rfr_ctrl = SDP_3430_SDRC_RFR_CTRL_200MHz; + } + gpmc_cs0_flash = MTD_DEV_TYPE_ONENAND; } -#endif } #endif +int onenand_board_init(struct mtd_info *mtd) +{ + if (gpmc_cs0_flash == MTD_DEV_TYPE_ONENAND) { + struct onenand_chip *this = mtd->priv; + this->base = (void *)CONFIG_SYS_ONENAND_BASE; + return 0; + } + return 1; +} + #if defined(CONFIG_CMD_NET) static void reset_net_chip(int gpio) { |