--- /dev/null
+/*
+ * linux/arch/arm/mach-omap2/board-3430sdp-flash.c
+ *
+ * Copyright (c) 2007 Texas Instruments
+ *
+ * Modified from mach-omap2/board-2430sdp-flash.c
+ * Author: Rohit Choraria <rohitkc@ti.com>
+ *
+ * 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 NAND_BLOCK_SIZE SZ_128K
+
+/* NAND */
+/* IMPORTANT NOTE ON MAPPING
+ * 3430SDP - 34XX
+ * ----------
+ * NOR always on 0x04000000 for SDPV1
+ * NOR always on 0x10000000 for SDPV2
+ * MPDB always on 0x08000000
+ * NAND always on 0x0C000000
+ * OneNand Mapped to 0x20000000
+ * Boot Mode(NAND/NOR). The other on CS1
+ */
+#define FLASH_BASE_SDPV1 0x04000000 /* NOR flash (64 Meg aligned) */
+#define FLASH_BASE_SDPV2 0x10000000 /* NOR flash (256 Meg aligned) */
+#define DEBUG_BASE 0x08000000 /* debug board */
+#define NAND_BASE 0x0C000000 /* NAND flash */
+#define ONENAND_MAP 0x20000000 /* OneNand flash */
+
+/* various memory sizes */
+#define FLASH_SIZE_SDPV1 SZ_64M
+#define FLASH_SIZE_SDPV2 SZ_128M
+
+static struct mtd_partition sdp_nor_partitions[] = {
+ /* bootloader (U-Boot, etc) in first sector */
+ {
+ .name = "Bootloader-NOR",
+ .offset = 0,
+ .size = SZ_256K,
+ .mask_flags = MTD_WRITEABLE, /* force read-only */
+ },
+ /* bootloader params in the next sector */
+ {
+ .name = "Params-NOR",
+ .offset = MTDPART_OFS_APPEND,
+ .size = SZ_256K,
+ .mask_flags = 0,
+ },
+ /* kernel */
+ {
+ .name = "Kernel-NOR",
+ .offset = MTDPART_OFS_APPEND,
+ .size = SZ_2M,
+ .mask_flags = 0
+ },
+ /* file system */
+ {
+ .name = "Filesystem-NOR",
+ .offset = MTDPART_OFS_APPEND,
+ .size = MTDPART_SIZ_FULL,
+ .mask_flags = 0
+ }
+};
+
+static struct flash_platform_data sdp_nor_data = {
+ .map_name = "cfi_probe",
+ .width = 2,
+ .parts = sdp_nor_partitions,
+ .nr_parts = ARRAY_SIZE(sdp_nor_partitions),
+};
+
+static struct resource sdp_nor_resource = {
+ .start = 0,
+ .end = 0,
+ .flags = IORESOURCE_MEM,
+};
+
+static struct platform_device sdp_nor_device = {
+ .name = "omapflash",
+ .id = 0,
+ .dev = {
+ .platform_data = &sdp_nor_data,
+ },
+ .num_resources = 1,
+ .resource = &sdp_nor_resource,
+};
+
+static int sdp_onenand_setup(void __iomem *, int freq);
+
+static struct mtd_partition sdp_onenand_partitions[] = {
+ {
+ .name = "X-Loader-OneNAND",
+ .offset = 0,
+ .size = 4 * (64 * 2048),
+ .mask_flags = MTD_WRITEABLE /* force read-only */
+ },
+ {
+ .name = "U-Boot-OneNAND",
+ .offset = MTDPART_OFS_APPEND,
+ .size = 2 * (64 * 2048),
+ .mask_flags = MTD_WRITEABLE /* force read-only */
+ },
+ {
+ .name = "U-Boot Environment-OneNAND",
+ .offset = MTDPART_OFS_APPEND,
+ .size = 1 * (64 * 2048),
+ },
+ {
+ .name = "Kernel-OneNAND",
+ .offset = MTDPART_OFS_APPEND,
+ .size = 16 * (64 * 2048),
+ },
+ {
+ .name = "File System-OneNAND",
+ .offset = MTDPART_OFS_APPEND,
+ .size = MTDPART_SIZ_FULL,
+ },
+};
+
+static struct omap_onenand_platform_data sdp_onenand_data = {
+ .parts = sdp_onenand_partitions,
+ .nr_parts = ARRAY_SIZE(sdp_onenand_partitions),
+ .onenand_setup = sdp_onenand_setup,
+ .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,
+ },
+};
+
+/*
+ * sdp_onenand_setup - The function configures the onenand flash.
+ * @onenand_base: Onenand base address
+ *
+ * @return int: Currently always returning zero.
+ */
+static int sdp_onenand_setup(void __iomem *onenand_base, int freq)
+{
+ /* Onenand setup does nothing at present */
+ return 0;
+}
+
+static struct mtd_partition sdp_nand_partitions[] = {
+ /* All the partition sizes are listed in terms of NAND block size */
+ {
+ .name = "X-Loader-NAND",
+ .offset = 0,
+ .size = 4 * NAND_BLOCK_SIZE,
+ .mask_flags = MTD_WRITEABLE, /* force read-only */
+ },
+ {
+ .name = "U-Boot-NAND",
+ .offset = MTDPART_OFS_APPEND, /* Offset = 0x80000 */
+ .size = 4 * NAND_BLOCK_SIZE,
+ .mask_flags = MTD_WRITEABLE, /* force read-only */
+ },
+ {
+ .name = "Boot Env-NAND",
+ .offset = MTDPART_OFS_APPEND, /* Offset = 0x100000 */
+ .size = 2 * NAND_BLOCK_SIZE,
+ },
+ {
+ .name = "Kernel-NAND",
+ .offset = MTDPART_OFS_APPEND, /* Offset = 0x140000 */
+ .size = 32 * NAND_BLOCK_SIZE,
+ },
+ {
+ .name = "File System - NAND",
+ .size = MTDPART_SIZ_FULL,
+ .offset = MTDPART_OFS_APPEND, /* Offset = 0x540000 */
+ },
+};
+
+static struct omap_nand_platform_data sdp_nand_data = {
+ .parts = sdp_nand_partitions,
+ .nr_parts = ARRAY_SIZE(sdp_nand_partitions),
+ .nand_setup = NULL,
+ .dma_channel = -1, /* disable DMA in OMAP NAND driver */
+ .dev_ready = NULL,
+};
+
+static struct resource sdp_nand_resource = {
+ .flags = IORESOURCE_MEM,
+};
+
+static struct platform_device sdp_nand_device = {
+ .name = "omap2-nand",
+ .id = 0,
+ .dev = {
+ .platform_data = &sdp_nand_data,
+ },
+ .num_resources = 1,
+ .resource = &sdp_nand_resource,
+};
+
+
+/**
+ * sdp3430_flash_init - Identify devices connected to GPMC and register.
+ *
+ * @return - void.
+ */
+void __init sdp3430_flash_init(void)
+{
+ u8 cs = 0;
+ u8 nandcs = GPMC_CS_NUM + 1;
+ u8 onenandcs = GPMC_CS_NUM + 1;
+ unsigned long gpmc_base_add;
+
+ gpmc_base_add = OMAP34XX_GPMC_VIRT;
+
+ /* Configure start address and size of NOR device */
+ if (omap_rev() > OMAP3430_REV_ES1_0) {
+ sdp_nor_resource.start = FLASH_BASE_SDPV2;
+ sdp_nor_resource.end = FLASH_BASE_SDPV2
+ + FLASH_SIZE_SDPV2 - 1;
+ } else {
+ sdp_nor_resource.start = FLASH_BASE_SDPV1;
+ sdp_nor_resource.end = FLASH_BASE_SDPV1
+ + FLASH_SIZE_SDPV1 - 1;
+ }
+
+ if (platform_device_register(&sdp_nor_device) < 0)
+ printk(KERN_ERR "Unable to register NOR device\n");
+
+ 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 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) {
+ sdp_nand_data.cs = nandcs;
+ sdp_nand_data.gpmc_cs_baseaddr = (void *)(gpmc_base_add +
+ GPMC_CS0_BASE + nandcs*GPMC_CS_SIZE);
+ sdp_nand_data.gpmc_baseaddr = (void *) (gpmc_base_add);
+
+ if (platform_device_register(&sdp_nand_device) < 0)
+ printk(KERN_ERR "Unable to register NAND device\n");
+ }
+
+ if (onenandcs < GPMC_CS_NUM) {
+ sdp_onenand_data.cs = onenandcs;
+ if (platform_device_register(&sdp_onenand_device) < 0)
+ printk(KERN_ERR "Unable to register OneNAND device\n");
+ }
+}
projects / linux-2.6-omap-h63xx.git / blobdiff