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-2430sdp-flash.c;fp=arch%2Farm%2Fmach-omap2%2Fboard-2430sdp-flash.c;h=57d3b553715bcc07dfacce7f8cd00b5d07e12572;hp=0000000000000000000000000000000000000000;hb=0d5f2216edfeb9904e0d6512f803b0f93871baaf;hpb=14fc69723d3442ef46f8f82b3f481e82f06a346d

diff --git a/arch/arm/mach-omap2/board-2430sdp-flash.c b/arch/arm/mach-omap2/board-2430sdp-flash.c
new file mode 100644
index 00000000000..57d3b553715
--- /dev/null
+++ b/arch/arm/mach-omap2/board-2430sdp-flash.c
@@ -0,0 +1,185 @@
+/*
+ * linux/arch/arm/mach-omap2/board-2430sdp-flash.c
+ *
+ * Copyright (C) 2007 MontaVista Software, Inc. <source@mvista.com>
+ * Author: Kevin Hilman
+ *
+ * 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 <asm/mach/flash.h>
+#include <linux/mtd/mtd.h>
+#include <linux/mtd/partitions.h>
+#include <linux/mtd/onenand_regs.h>
+
+#include <asm/io.h>
+#include <mach/onenand.h>
+#include <mach/board.h>
+#include <mach/gpmc.h>
+#include <mach/nand.h>
+
+#define ONENAND_MAP 0x20000000
+#define GPMC_OFF_CONFIG1_0 0x60
+
+enum fstype {
+	NAND = 0,
+	NOR,
+	ONENAND,
+	UNKNOWN = -1
+};
+
+static enum fstype flash_type = NAND;
+
+static struct mtd_partition nand_partitions[] = {
+	{
+		.name		= "X-Loader",
+		.offset		= 0,
+		.size		= 4*(64*2048),  /* 0-3 blks reserved.
+						   Mandated by ROM code */
+		.mask_flags	= MTD_WRITEABLE	/* force read-only */
+	},
+	{
+		.name		= "U-Boot",
+		.offset		= MTDPART_OFS_APPEND,
+		.size		=  4*(64*2048),
+		.mask_flags	= MTD_WRITEABLE	/* force read-only */
+	},
+	{
+		.name		= "U-Boot Environment",
+		.offset		= MTDPART_OFS_APPEND,
+		.size		= 2*(64*2048),
+	},
+	{
+		.name		= "Kernel",
+		.offset		= MTDPART_OFS_APPEND,
+		.size		= 32*(64*2048),		/* 4*1M */
+	},
+	{
+		.name		= "File System",
+		.offset		= MTDPART_OFS_APPEND,
+		.size		= MTDPART_SIZ_FULL,
+	},
+};
+static struct omap_nand_platform_data sdp_nand_data = {
+	.parts		= nand_partitions,
+	.nr_parts	= ARRAY_SIZE(nand_partitions),
+	.dma_channel	= -1,	/* disable DMA in OMAP OneNAND driver */
+};
+
+static struct platform_device sdp_nand_device = {
+	.name		= "omap2-nand",
+	.id		= -1,
+	.dev = {
+		.platform_data = &sdp_nand_data,
+	},
+};
+
+static struct mtd_partition onenand_partitions[] = {
+	{
+		.name		= "(OneNAND)X-Loader",
+		.offset		= 0,
+		.size		= 4*(64*2048),  /* 0-3 blks reserved.
+						   Mandated by ROM code */
+		.mask_flags	= MTD_WRITEABLE	/* force read-only */
+	},
+	{
+		.name		= "(OneNAND)U-Boot",
+		.offset		= MTDPART_OFS_APPEND,
+		.size		=  2*(64*2048),
+		.mask_flags	= MTD_WRITEABLE	/* force read-only */
+	},
+	{
+		.name		= "(OneNAND)U-Boot Environment",
+		.offset		= MTDPART_OFS_APPEND,
+		.size		= 1*(64*2048),
+	},
+	{
+		.name		= "(OneNAND)Kernel",
+		.offset		= MTDPART_OFS_APPEND,
+		.size		= 4*(64*2048),
+	},
+	{
+		.name		= "(OneNAND)File System",
+		.offset		= MTDPART_OFS_APPEND,
+		.size		= MTDPART_SIZ_FULL,
+	},
+};
+
+static struct omap_onenand_platform_data sdp_onenand_data = {
+	.parts		= onenand_partitions,
+	.nr_parts	= ARRAY_SIZE(onenand_partitions),
+	.dma_channel	= -1,	/* disable DMA in OMAP OneNAND driver */
+};
+
+static struct platform_device sdp_onenand_device = {
+	.name		= "omap2-onenand",
+	.id		= -1,
+	.dev = {
+		.platform_data = &sdp_onenand_data,
+	},
+};
+
+void __init sdp2430_flash_init(void)
+{
+	void __iomem *gpmc_base_add, *gpmc_cs_base_add;
+	unsigned char cs = 0;
+
+	gpmc_base_add = (__force void __iomem *)OMAP243X_GPMC_VIRT;
+	while (cs < GPMC_CS_NUM) {
+		int ret = 0;
+
+		/* Each GPMC set for a single CS is at offset 0x30 */
+		gpmc_cs_base_add = (gpmc_base_add + GPMC_OFF_CONFIG1_0 +
+				    (cs*0x30));
+
+		/* 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 */
+		ret = __raw_readl(gpmc_cs_base_add + GPMC_CS_CONFIG1);
+		if ((ret & 0xC00) == (0x800)) {
+			/* Found it!! */
+			printk(KERN_INFO "NAND: Found NAND on CS %d \n", cs);
+			flash_type = NAND;
+			break;
+		}
+		ret = __raw_readl(gpmc_cs_base_add + GPMC_CS_CONFIG7);
+		if ((ret & 0x3F) == (ONENAND_MAP >> 24)) {
+			/* Found it!! */
+			flash_type = ONENAND;
+			break;
+		}
+		cs++;
+	}
+	if (cs >= GPMC_CS_NUM) {
+		printk(KERN_INFO "MTD: Unable to find MTD configuration in "
+				 "GPMC   - not registering.\n");
+		return;
+	}
+
+	if (flash_type == NAND) {
+		sdp_nand_data.cs	       = cs;
+		sdp_nand_data.gpmc_cs_baseaddr = gpmc_cs_base_add;
+		sdp_nand_data.gpmc_baseaddr    = gpmc_base_add;
+
+		if (platform_device_register(&sdp_nand_device) < 0) {
+			printk(KERN_ERR "Unable to register NAND device\n");
+			return;
+		}
+	}
+
+	if (flash_type == ONENAND) {
+		sdp_onenand_data.cs = cs;
+
+		if (platform_device_register(&sdp_onenand_device) < 0) {
+			printk(KERN_ERR "Unable to register OneNAND device\n");
+			return;
+		}
+	}
+}