X-Git-Url: http://www.pilppa.org/gitweb/gitweb.cgi?p=linux-2.6-omap-h63xx.git;a=blobdiff_plain;f=arch%2Farm%2Fmach-omap2%2Fboard-omap3evm-flash.c;fp=arch%2Farm%2Fmach-omap2%2Fboard-omap3evm-flash.c;h=b58b7c6b1af7e01e79b162fa58476fa20c835053;hp=0000000000000000000000000000000000000000;hb=b934c987ee1764eb09b8843a3ee00eabc24bd52c;hpb=14fc69723d3442ef46f8f82b3f481e82f06a346d

diff --git a/arch/arm/mach-omap2/board-omap3evm-flash.c b/arch/arm/mach-omap2/board-omap3evm-flash.c
new file mode 100644
index 00000000000..b58b7c6b1af
--- /dev/null
+++ b/arch/arm/mach-omap2/board-omap3evm-flash.c
@@ -0,0 +1,192 @@
+/*
+ * 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 <mach/onenand.h>
+#include <mach/board.h>
+#include <mach/gpmc.h>
+#include <mach/nand.h>
+
+#define ONENAND_MAP		0x20000000
+
+static int omap3evm_onenand_setup(void __iomem *, int freq);
+
+static struct mtd_partition omap3evm_onenand_partitions[] = {
+	{
+		.name           = "xloader-onenand",
+		.offset         = 0,
+		.size           = 4*(64*2048),
+		.mask_flags     = MTD_WRITEABLE
+	},
+	{
+		.name           = "uboot-onenand",
+		.offset         = MTDPART_OFS_APPEND,
+		.size           =  15*(64*2048),
+		.mask_flags     = MTD_WRITEABLE
+	},
+	{
+		.name           = "params-onenand",
+		.offset         = MTDPART_OFS_APPEND,
+		.size           = 1*(64*2048),
+	},
+	{
+		.name           = "linux-onenand",
+		.offset         = MTDPART_OFS_APPEND,
+		.size           = 40*(64*2048),
+	},
+	{
+		.name           = "jffs2-onenand",
+		.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,
+	},
+};
+
+static struct mtd_partition omap3evm_nand_partitions[] = {
+	/* All the partition sizes are listed in terms of NAND block size */
+	{
+		.name		= "xloader-nand",
+		.offset		= 0,
+		.size		= 4*(128 * 1024),
+		.mask_flags	= MTD_WRITEABLE
+	},
+	{
+		.name		= "uboot-nand",
+		.offset		= MTDPART_OFS_APPEND,
+		.size		= 14*(128 * 1024),
+		.mask_flags	= MTD_WRITEABLE
+	},
+	{
+		.name		= "params-nand",
+
+		.offset		= MTDPART_OFS_APPEND,
+		.size		= 2*(128 * 1024)
+	},
+	{
+		.name		= "linux-nand",
+		.offset		= MTDPART_OFS_APPEND,
+		.size		= 40*(128 * 1024)
+	},
+	{
+		.name		= "jffs2-nand",
+		.size		= MTDPART_SIZ_FULL,
+		.offset		= MTDPART_OFS_APPEND,
+	},
+};
+
+static struct omap_nand_platform_data omap3evm_nand_data = {
+	.parts		= omap3evm_nand_partitions,
+	.nr_parts	= ARRAY_SIZE(omap3evm_nand_partitions),
+	.nand_setup	= NULL,
+	.dma_channel	= -1,		/* disable DMA in OMAP NAND driver */
+	.dev_ready	= NULL,
+};
+
+static struct resource omap3evm_nand_resource = {
+	.flags		= IORESOURCE_MEM,
+};
+
+static struct platform_device omap3evm_nand_device = {
+	.name		= "omap2-nand",
+	.id		= 0,
+	.dev		= {
+		.platform_data	= &omap3evm_nand_data,
+	},
+	.num_resources	= 1,
+	.resource	= &omap3evm_nand_resource,
+};
+
+/*
+ *      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, int freq)
+{
+	/* 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, nandcs = GPMC_CS_NUM + 1;
+	u32		gpmc_base_add = OMAP34XX_GPMC_VIRT;
+
+	while (cs < GPMC_CS_NUM) {
+		u32 ret = 0;
+		ret = gpmc_cs_read_reg(cs, GPMC_CS_CONFIG1);
+
+		/*
+		* xloader/Uboot would have programmed the NAND/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 NAND/oneNAND is configured
+		*/
+		if ((ret & 0xC00) == 0x800) {
+			/* Found it!! */
+			if (nandcs > GPMC_CS_NUM)
+				nandcs = cs;
+		} else {
+			ret = gpmc_cs_read_reg(cs, GPMC_CS_CONFIG7);
+			if ((ret & 0x3F) == (ONENAND_MAP >> 24))
+				onenandcs = cs;
+		}
+		cs++;
+	}
+	if ((nandcs > GPMC_CS_NUM) && (onenandcs > GPMC_CS_NUM)) {
+		printk(KERN_INFO "NAND/OneNAND: Unable to find configuration "
+				" in GPMC\n ");
+		return;
+	}
+
+	if (nandcs < GPMC_CS_NUM) {
+		omap3evm_nand_data.cs	= nandcs;
+		omap3evm_nand_data.gpmc_cs_baseaddr = (void *)(gpmc_base_add +
+					GPMC_CS0_BASE + nandcs*GPMC_CS_SIZE);
+		omap3evm_nand_data.gpmc_baseaddr   = (void *) (gpmc_base_add);
+
+		if (platform_device_register(&omap3evm_nand_device) < 0) {
+			printk(KERN_ERR "Unable to register NAND device\n");
+		}
+	}
+
+	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");
+	}
+}
+