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