From: Steve Sakoman <steve@xxxxxxxxxxx>
Add onenand support for OMAP3 EVM
Signed-off-by: Steve Sakoman <steve@xxxxxxxxxxx>
---
arch/arm/mach-omap2/Makefile | 3
arch/arm/mach-omap2/board-omap3evm-flash.c | 117 +++++++++++++++++++++++++++++
arch/arm/mach-omap2/board-omap3evm.c | 1
include/asm-arm/arch-omap/board-omap3evm.h | 4 +
4 files changed, 126 insertions(+), 1 deletion(-)
diff -uprN -X a/Documentation/dontdiff
a/arch/arm/mach-omap2/board-omap3evm.c
b/arch/arm/mach-omap2/board-omap3evm.c
--- a/arch/arm/mach-omap2/board-omap3evm.c 2008-04-27 22:48:55.000000000 -0700
+++ b/arch/arm/mach-omap2/board-omap3evm.c 2008-04-28 09:21:22.000000000 -0700
@@ -71,6 +71,7 @@ static void __init omap3_evm_init(void)
hsmmc_init();
usb_musb_init();
usb_ehci_init();
+ omap3evm_flash_init();
}
arch_initcall(omap3_evm_i2c_init);
diff -uprN -X a/Documentation/dontdiff
a/arch/arm/mach-omap2/board-omap3evm-flash.c
b/arch/arm/mach-omap2/board-omap3evm-flash.c
--- a/arch/arm/mach-omap2/board-omap3evm-flash.c 1969-12-31
16:00:00.000000000 -0800
+++ b/arch/arm/mach-omap2/board-omap3evm-flash.c 2008-04-28
09:11:46.000000000 -0700
@@ -0,0 +1,117 @@
+/*
+ * board-omap3evm-flash.c
+ *
+ * Copyright (c) 2008 Texas Instruments,
+ *
+ * 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/mtd/onenand_regs.h>
+#include <linux/types.h>
+#include <linux/io.h>
+
+#include <asm/mach/flash.h>
+#include <asm/arch/onenand.h>
+#include <asm/arch/board.h>
+#include <asm/arch/gpmc.h>
+#include <asm/arch/nand.h>
+
+static int omap3evm_onenand_setup(void __iomem *);
+
+static struct mtd_partition omap3evm_onenand_partitions[] = {
+ {
+ .name = "xloader",
+ .offset = 0,
+ .size = 4*(64*2048),
+ .mask_flags = MTD_WRITEABLE
+ },
+ {
+ .name = "uboot",
+ .offset = MTDPART_OFS_APPEND,
+ .size = 15*(64*2048),
+ .mask_flags = MTD_WRITEABLE
+ },
+ {
+ .name = "params",
+ .offset = MTDPART_OFS_APPEND,
+ .size = 1*(64*2048),
+ },
+ {
+ .name = "linux",
+ .offset = MTDPART_OFS_APPEND,
+ .size = 40*(64*2048),
+ },
+ {
+ .name = "jffs2",
+ .offset = MTDPART_OFS_APPEND,
+ .size = MTDPART_SIZ_FULL,
+ },
+};
+
+static struct omap_onenand_platform_data omap3evm_onenand_data = {
+ .parts = omap3evm_onenand_partitions,
+ .nr_parts = ARRAY_SIZE(omap3evm_onenand_partitions),
+ .onenand_setup = omap3evm_onenand_setup,
+ .dma_channel = -1, /* disable DMA in OMAP OneNAND driver */
+};
+
+static struct platform_device omap3evm_onenand_device = {
+ .name = "omap2-onenand",
+ .id = -1,
+ .dev = {
+ .platform_data = &omap3evm_onenand_data,
+ },
+};
+
+/*
+ * omap3evm_onenand_setup - Set the onenand sync mode
+ * @onenand_base: The onenand base address in GPMC memory map
+ *
+ */
+
+static int omap3evm_onenand_setup(void __iomem *onenand_base)
+ {
+ /* nothing is required to be setup for onenand as of now */
+ return 0;
+}
+
+void __init omap3evm_flash_init(void)
+{
+ u8 cs = 0;
+ u8 onenandcs = GPMC_CS_NUM + 1;
+
+ while (cs < GPMC_CS_NUM) {
+ u32 ret = 0;
+ ret = gpmc_cs_read_reg(cs, GPMC_CS_CONFIG7);
+
+ /*
+ * xloader/Uboot would have programmed the oneNAND
+ * base address for us This is a ugly hack. The proper
+ * way of doing this is to pass the setup of u-boot up
+ * to kernel using kernel params - something on the
+ * lines of machineID. Check if oneNAND is configured
+ */
+ if ((ret & 0x3F) == (ONENAND_MAP >> 24))
+ onenandcs = cs;
+ cs++;
+ }
+ if (onenandcs > GPMC_CS_NUM) {
+ printk(KERN_INFO "OneNAND: Unable to find configuration "
+ " in GPMC\n ");
+ return;
+ }
+
+ if (onenandcs < GPMC_CS_NUM) {
+ omap3evm_onenand_data.cs = onenandcs;
+ if (platform_device_register(&omap3evm_onenand_device) < 0)
+ printk(KERN_ERR "Unable to register OneNAND device\n");
+ }
+}
+
diff -uprN -X a/Documentation/dontdiff a/arch/arm/mach-omap2/Makefile
b/arch/arm/mach-omap2/Makefile
--- a/arch/arm/mach-omap2/Makefile 2008-04-28 07:29:24.000000000 -0700
+++ b/arch/arm/mach-omap2/Makefile 2008-04-28 09:11:46.000000000 -0700
@@ -39,7 +39,8 @@ obj-$(CONFIG_MACH_OMAP_3430SDP) += boar
board-3430sdp-flash.o
obj-$(CONFIG_MACH_OMAP3EVM) += board-omap3evm.o \
hsmmc.o \
- usb-musb.o usb-ehci.o
+ usb-musb.o usb-ehci.o \
+ board-omap3evm-flash.o
obj-$(CONFIG_MACH_OMAP3_BEAGLE) += board-omap3beagle.o \
usb-musb.o usb-ehci.o \
hsmmc.o
diff -uprN -X a/Documentation/dontdiff
a/include/asm-arm/arch-omap/board-omap3evm.h
b/include/asm-arm/arch-omap/board-omap3evm.h
--- a/include/asm-arm/arch-omap/board-omap3evm.h 2008-04-26
06:32:31.000000000 -0700
+++ b/include/asm-arm/arch-omap/board-omap3evm.h 2008-04-28
09:21:19.000000000 -0700
@@ -29,7 +29,11 @@
#ifndef __ASM_ARCH_OMAP3_EVM_H
#define __ASM_ARCH_OMAP3_EVM_H
+extern void omap3evm_flash_init(void);
+
#define TWL4030_IRQNUM INT_34XX_SYS_NIRQ
+#define ONENAND_MAP 0x20000000
+
#endif /* __ASM_ARCH_OMAP3_EVM_H */
--
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