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. This patch is necessary in order to use
newer boards that come with NAND memories.
Also, it removes unnecesary code for registering the OneNAND.
Signed-off-by: Javier Martinez Canillas <javier@xxxxxxxxxxxx>
---
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 e558800..dbd13b2 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
--
1.7.7.6
--
To unsubscribe from this list: send the line "unsubscribe linux-omap" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
