IGEP-based boards can have two different flash memories, a OneNAND or a NAND device. The boot configuration pins (sys_boot) are used to specify which memory is available.
Also, this patch removes unnecesary code for registering the OneNAND.
Signed-off-by: Javier Martinez Canillas javier@dowhile0.org --- arch/arm/mach-omap2/board-igep0020.c | 75 ++++++++++++++-------------------- 1 files changed, 31 insertions(+), 44 deletions(-)
diff --git a/arch/arm/mach-omap2/board-igep0020.c b/arch/arm/mach-omap2/board-igep0020.c index 930c0d3..4af615a 100644 --- a/arch/arm/mach-omap2/board-igep0020.c +++ b/arch/arm/mach-omap2/board-igep0020.c @@ -24,6 +24,8 @@ #include <linux/i2c/twl.h> #include <linux/mmc/host.h>
+#include <linux/mtd/nand.h> + #include <asm/mach-types.h> #include <asm/mach/arch.h>
@@ -39,6 +41,8 @@ #include "hsmmc.h" #include "sdram-numonyx-m65kxxxxam.h" #include "common-board-devices.h" +#include "board-flash.h" +#include "control.h"
#define IGEP2_SMSC911X_CS 5 #define IGEP2_SMSC911X_GPIO 176 @@ -60,6 +64,10 @@ #define IGEP3_GPIO_LED1_RED 16 #define IGEP3_GPIO_USBH_NRESET 183
+#define IGEP_SYSBOOT_MASK 0x1f +#define IGEP_SYSBOOT_NAND 0x0f +#define IGEP_SYSBOOT_ONENAND 0x10 + /* * IGEP2 Hardware Revision Table * @@ -110,8 +118,10 @@ static void __init igep2_get_revision(void) gpio_free(IGEP2_GPIO_LED1_RED); }
-#if defined(CONFIG_MTD_ONENAND_OMAP2) || \ - defined(CONFIG_MTD_ONENAND_OMAP2_MODULE) +#if defined(CONFIG_MTD_ONENAND_OMAP2) || \ + defined(CONFIG_MTD_ONENAND_OMAP2_MODULE) || \ + defined(CONFIG_MTD_NAND_OMAP2) || \ + defined(CONFIG_MTD_NAND_OMAP2_MODULE)
#define ONENAND_MAP 0x20000000
@@ -123,7 +133,7 @@ static void __init igep2_get_revision(void) * So MTD regards it as 4KiB page size and 256KiB block size 64*(2*2048) */
-static struct mtd_partition igep_onenand_partitions[] = { +static struct mtd_partition igep_flash_partitions[] = { { .name = "X-Loader", .offset = 0, @@ -151,50 +161,27 @@ static struct mtd_partition igep_onenand_partitions[] = { }, };
-static struct omap_onenand_platform_data igep_onenand_data = { - .parts = igep_onenand_partitions, - .nr_parts = ARRAY_SIZE(igep_onenand_partitions), - .dma_channel = -1, /* disable DMA in OMAP OneNAND driver */ -}; - -static struct platform_device igep_onenand_device = { - .name = "omap2-onenand", - .id = -1, - .dev = { - .platform_data = &igep_onenand_data, - }, -}; +static inline u32 igep_get_sysboot_value(void) +{ + return omap_ctrl_readl(OMAP343X_CONTROL_STATUS) & IGEP_SYSBOOT_MASK; +}
static void __init igep_flash_init(void) { - u8 cs = 0; - u8 onenandcs = GPMC_CS_NUM + 1; - - for (cs = 0; cs < GPMC_CS_NUM; cs++) { - u32 ret; - ret = gpmc_cs_read_reg(cs, GPMC_CS_CONFIG1); - - /* Check if NAND/oneNAND is configured */ - if ((ret & 0xC00) == 0x800) - /* NAND found */ - pr_err("IGEP: Unsupported NAND found\n"); - else { - ret = gpmc_cs_read_reg(cs, GPMC_CS_CONFIG7); - if ((ret & 0x3F) == (ONENAND_MAP >> 24)) - /* ONENAND found */ - onenandcs = cs; - } - } - - if (onenandcs > GPMC_CS_NUM) { - pr_err("IGEP: Unable to find configuration in GPMC\n"); - return; - } - - igep_onenand_data.cs = onenandcs; - - if (platform_device_register(&igep_onenand_device) < 0) - pr_err("IGEP: Unable to register OneNAND device\n"); + u32 mux; + mux = igep_get_sysboot_value(); + + if (mux == IGEP_SYSBOOT_NAND) { + pr_info("IGEP: initializing NAND memory device\n"); + board_nand_init(igep_flash_partitions, + ARRAY_SIZE(igep_flash_partitions), + 0, NAND_BUSWIDTH_16); + } else if (mux == IGEP_SYSBOOT_ONENAND) { + pr_info("IGEP: initializing OneNAND memory device\n"); + board_onenand_init(igep_flash_partitions, + ARRAY_SIZE(igep_flash_partitions), 0); + } else + pr_err("IGEP: Flash: unsupported sysboot sequence found\n"); }
#else