Add nand support to omap3beagle
Signed-off-by: Steve Sakoman <steve@xxxxxxxxxxx>
---
arch/arm/mach-omap2/Makefile | 3
arch/arm/mach-omap2/board-omap3beagle-flash.c | 119 ++++++++++++++++++++++++++
arch/arm/mach-omap2/board-omap3beagle.c | 1
include/asm-arm/arch-omap/board-omap3beagle.h | 2
4 files changed, 124 insertions(+), 1 deletion(-)
diff --git a/arch/arm/mach-omap2/Makefile b/arch/arm/mach-omap2/Makefile
index 13d0043..d582b8f 100644
--- a/arch/arm/mach-omap2/Makefile
+++ b/arch/arm/mach-omap2/Makefile
@@ -44,7 +44,8 @@ obj-$(CONFIG_MACH_OMAP3EVM) += board-omap3evm.o \
board-omap3evm-flash.o
obj-$(CONFIG_MACH_OMAP3_BEAGLE) += board-omap3beagle.o \
usb-musb.o usb-ehci.o \
- hsmmc.o
+ hsmmc.o \
+ board-omap3beagle-flash.o
obj-$(CONFIG_MACH_OMAP_LDP) += board-ldp.o \
hsmmc.o \
usb-musb.o
diff --git a/arch/arm/mach-omap2/board-omap3beagle-flash.c b/arch/arm/mach-omap2/board-omap3beagle-flash.c
new file mode 100644
index 0000000..5346df0
--- /dev/null
+++ b/arch/arm/mach-omap2/board-omap3beagle-flash.c
@@ -0,0 +1,119 @@
+/*
+ * board-omap3beagle-flash.c
+ *
+ * Copyright (c) 2008 Texas Instruments
+ *
+ * Modified from board-omap3evm-flash.c
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/kernel.h>
+#include <linux/platform_device.h>
+#include <linux/mtd/mtd.h>
+#include <linux/mtd/partitions.h>
+#include <linux/mtd/nand.h>
+#include <linux/types.h>
+#include <linux/io.h>
+
+#include <asm/mach/flash.h>
+#include <asm/arch/board.h>
+#include <asm/arch/gpmc.h>
+#include <asm/arch/nand.h>
+
+#define GPMC_CS0_BASE 0x60
+#define GPMC_CS_SIZE 0x30
+
+static struct mtd_partition omap3beagle_nand_partitions[] = {
+ /* All the partition sizes are listed in terms of NAND block size */
+ {
+ .name = "X-Loader",
+ .offset = 0,
+ .size = 4*(64 * 2048),
+ .mask_flags = MTD_WRITEABLE, /* force read-only */
+ },
+ {
+ .name = "U-Boot",
+ .offset = MTDPART_OFS_APPEND, /* Offset = 0x80000 */
+ .size = 15*(64 * 2048),
+ .mask_flags = MTD_WRITEABLE, /* force read-only */
+ },
+ {
+ .name = "U-Boot Env",
+ .offset = MTDPART_OFS_APPEND, /* Offset = 0x260000 */
+ .size = 1*(64 * 2048),
+ },
+ {
+ .name = "Kernel",
+ .offset = MTDPART_OFS_APPEND, /* Offset = 0x280000 */
+ .size = 32*(64 * 2048),
+ },
+ {
+ .name = "File System",
+ .offset = MTDPART_OFS_APPEND, /* Offset = 0x680000 */
+ .size = MTDPART_SIZ_FULL,
+ },
+};
+
+static struct omap_nand_platform_data omap3beagle_nand_data = {
+ .parts = omap3beagle_nand_partitions,
+ .nr_parts = ARRAY_SIZE(omap3beagle_nand_partitions),
+ .dma_channel = -1, /* disable DMA in OMAP NAND driver */
+ .nand_setup = NULL,
+ .dev_ready = NULL,
+};
+
+static struct resource omap3beagle_nand_resource = {
+ .flags = IORESOURCE_MEM,
+};
+
+static struct platform_device omap3beagle_nand_device = {
+ .name = "omap2-nand",
+ .id = -1,
+ .dev = {
+ .platform_data = &omap3beagle_nand_data,
+ },
+ .num_resources = 1,
+ .resource = &omap3beagle_nand_resource,
+};
+
+
+void __init omap3beagle_flash_init(void)
+{
+ u8 cs = 0;
+ u8 nandcs = GPMC_CS_NUM + 1;
+
+ u32 gpmc_base_add = OMAP34XX_GPMC_VIRT;
+
+ /* find out the chip-select on which NAND exists */
+ while (cs < GPMC_CS_NUM) {
+ u32 ret = 0;
+ ret = gpmc_cs_read_reg(cs, GPMC_CS_CONFIG1);
+
+ if ((ret & 0xC00) == 0x800) {
+ printk(KERN_INFO "Found NAND on CS%d\n", cs);
+ if (nandcs > GPMC_CS_NUM)
+ nandcs = cs;
+ }
+ cs++;
+ }
+
+ if (nandcs > GPMC_CS_NUM) {
+ printk(KERN_INFO "NAND: Unable to find configuration "
+ "in GPMC\n ");
+ return;
+ }
+
+ if (nandcs < GPMC_CS_NUM) {
+ omap3beagle_nand_data.cs = nandcs;
+ omap3beagle_nand_data.gpmc_cs_baseaddr = (void *)
+ (gpmc_base_add + GPMC_CS0_BASE + nandcs * GPMC_CS_SIZE);
+ omap3beagle_nand_data.gpmc_baseaddr = (void *) (gpmc_base_add);
+
+ printk(KERN_INFO "Registering NAND on CS%d\n", nandcs);
+ if (platform_device_register(&omap3beagle_nand_device) < 0)
+ printk(KERN_ERR "Unable to register NAND device\n");
+ }
+}
diff --git a/arch/arm/mach-omap2/board-omap3beagle.c b/arch/arm/mach-omap2/board-omap3beagle.c
index c992cc7..99e042e 100644
--- a/arch/arm/mach-omap2/board-omap3beagle.c
+++ b/arch/arm/mach-omap2/board-omap3beagle.c
@@ -94,6 +94,7 @@ static void __init omap3_beagle_init(void)
hsmmc_init();
usb_musb_init();
usb_ehci_init();
+ omap3beagle_flash_init();
}
arch_initcall(omap3_beagle_i2c_init);
diff --git a/include/asm-arm/arch-omap/board-omap3beagle.h b/include/asm-arm/arch-omap/board-omap3beagle.h
index 46dff31..26ecfb8 100644
--- a/include/asm-arm/arch-omap/board-omap3beagle.h
+++ b/include/asm-arm/arch-omap/board-omap3beagle.h
@@ -29,5 +29,7 @@
#ifndef __ASM_ARCH_OMAP3_BEAGLE_H
#define __ASM_ARCH_OMAP3_BEAGLE_H
+extern void omap3beagle_flash_init(void);
+
#endif /* __ASM_ARCH_OMAP3_BEAGLE_H */
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