--- /dev/null
+/*
+ * 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;
+ }
+ }
+}
projects / linux-2.6-omap-h63xx.git / blobdiff