+++ /dev/null
-/*
- * NOR Flash memory access on TI Toto board
- *
- * jzhang@ti.com (C) 2003 Texas Instruments.
- *
- * (C) 2002 MontVista Software, Inc.
- */
-
-#include <linux/module.h>
-#include <linux/types.h>
-#include <linux/kernel.h>
-#include <linux/errno.h>
-#include <linux/init.h>
-#include <linux/slab.h>
-
-#include <linux/mtd/mtd.h>
-#include <linux/mtd/map.h>
-#include <linux/mtd/partitions.h>
-
-#include <asm/hardware.h>
-#include <asm/io.h>
-
-
-#ifndef CONFIG_ARCH_OMAP
-#error This is for OMAP architecture only
-#endif
-
-//these lines need be moved to a hardware header file
-#define OMAP_TOTO_FLASH_BASE 0xd8000000
-#define OMAP_TOTO_FLASH_SIZE 0x80000
-
-static struct map_info omap_toto_map_flash = {
- .name = "OMAP Toto flash",
- .bankwidth = 2,
- .virt = (void __iomem *)OMAP_TOTO_FLASH_BASE,
-};
-
-
-static struct mtd_partition toto_flash_partitions[] = {
- {
- .name = "BootLoader",
- .size = 0x00040000, /* hopefully u-boot will stay 128k + 128*/
- .offset = 0,
- .mask_flags = MTD_WRITEABLE, /* force read-only */
- }, {
- .name = "ReservedSpace",
- .size = 0x00030000,
- .offset = MTDPART_OFS_APPEND,
- //mask_flags: MTD_WRITEABLE, /* force read-only */
- }, {
- .name = "EnvArea", /* bottom 64KiB for env vars */
- .size = MTDPART_SIZ_FULL,
- .offset = MTDPART_OFS_APPEND,
- }
-};
-
-static struct mtd_partition *parsed_parts;
-
-static struct mtd_info *flash_mtd;
-
-static int __init init_flash (void)
-{
-
- struct mtd_partition *parts;
- int nb_parts = 0;
- int parsed_nr_parts = 0;
- const char *part_type;
-
- /*
- * Static partition definition selection
- */
- part_type = "static";
-
- parts = toto_flash_partitions;
- nb_parts = ARRAY_SIZE(toto_flash_partitions);
- omap_toto_map_flash.size = OMAP_TOTO_FLASH_SIZE;
- omap_toto_map_flash.phys = virt_to_phys(OMAP_TOTO_FLASH_BASE);
-
- simple_map_init(&omap_toto_map_flash);
- /*
- * Now let's probe for the actual flash. Do it here since
- * specific machine settings might have been set above.
- */
- printk(KERN_NOTICE "OMAP toto flash: probing %d-bit flash bus\n",
- omap_toto_map_flash.bankwidth*8);
- flash_mtd = do_map_probe("jedec_probe", &omap_toto_map_flash);
- if (!flash_mtd)
- return -ENXIO;
-
- if (parsed_nr_parts > 0) {
- parts = parsed_parts;
- nb_parts = parsed_nr_parts;
- }
-
- if (nb_parts == 0) {
- printk(KERN_NOTICE "OMAP toto flash: no partition info available,"
- "registering whole flash at once\n");
- if (add_mtd_device(flash_mtd)){
- return -ENXIO;
- }
- } else {
- printk(KERN_NOTICE "Using %s partition definition\n",
- part_type);
- return add_mtd_partitions(flash_mtd, parts, nb_parts);
- }
- return 0;
-}
-
-int __init omap_toto_mtd_init(void)
-{
- int status;
-
- if (status = init_flash()) {
- printk(KERN_ERR "OMAP Toto Flash: unable to init map for toto flash\n");
- }
- return status;
-}
-
-static void __exit omap_toto_mtd_cleanup(void)
-{
- if (flash_mtd) {
- del_mtd_partitions(flash_mtd);
- map_destroy(flash_mtd);
- kfree(parsed_parts);
- }
-}
-
-module_init(omap_toto_mtd_init);
-module_exit(omap_toto_mtd_cleanup);
-
-MODULE_AUTHOR("Jian Zhang");
-MODULE_DESCRIPTION("OMAP Toto board map driver");
-MODULE_LICENSE("GPL");
+++ /dev/null
-/*
- * drivers/mtd/nand/toto.c
- *
- * Copyright (c) 2003 Texas Instruments
- *
- * Derived from drivers/mtd/autcpu12.c
- *
- * Copyright (c) 2002 Thomas Gleixner <tgxl@linutronix.de>
- *
- * 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.
- *
- * Overview:
- * This is a device driver for the NAND flash device found on the
- * TI fido board. It supports 32MiB and 64MiB cards
- */
-
-#include <linux/slab.h>
-#include <linux/init.h>
-#include <linux/module.h>
-#include <linux/delay.h>
-#include <linux/mtd/mtd.h>
-#include <linux/mtd/nand.h>
-#include <linux/mtd/partitions.h>
-#include <asm/io.h>
-#include <asm/arch/hardware.h>
-#include <asm/sizes.h>
-#include <asm/arch/toto.h>
-#include <asm/arch-omap1510/hardware.h>
-#include <asm/arch/gpio.h>
-
-#define CONFIG_NAND_WORKAROUND 1
-
-/*
- * MTD structure for TOTO board
- */
-static struct mtd_info *toto_mtd = NULL;
-
-static unsigned long toto_io_base = OMAP_FLASH_1_BASE;
-
-/*
- * Define partitions for flash devices
- */
-
-static struct mtd_partition partition_info64M[] = {
- { .name = "toto kernel partition 1",
- .offset = 0,
- .size = 2 * SZ_1M },
- { .name = "toto file sys partition 2",
- .offset = 2 * SZ_1M,
- .size = 14 * SZ_1M },
- { .name = "toto user partition 3",
- .offset = 16 * SZ_1M,
- .size = 16 * SZ_1M },
- { .name = "toto devboard extra partition 4",
- .offset = 32 * SZ_1M,
- .size = 32 * SZ_1M },
-};
-
-static struct mtd_partition partition_info32M[] = {
- { .name = "toto kernel partition 1",
- .offset = 0,
- .size = 2 * SZ_1M },
- { .name = "toto file sys partition 2",
- .offset = 2 * SZ_1M,
- .size = 14 * SZ_1M },
- { .name = "toto user partition 3",
- .offset = 16 * SZ_1M,
- .size = 16 * SZ_1M },
-};
-
-#define NUM_PARTITIONS32M 3
-#define NUM_PARTITIONS64M 4
-
-/*
- * hardware specific access to control-lines
- *
- * ctrl:
- * NAND_NCE: bit 0 -> bit 14 (0x4000)
- * NAND_CLE: bit 1 -> bit 12 (0x1000)
- * NAND_ALE: bit 2 -> bit 1 (0x0002)
- */
-static void toto_hwcontrol(struct mtd_info *mtd, int cmd,
- unsigned int ctrl)
-{
- struct nand_chip *chip = mtd->priv;
-
- if (ctrl & NAND_CTRL_CHANGE) {
- unsigned long bits;
-
- /* hopefully enough time for tc make proceding write to clear */
- udelay(1);
-
- bits = (~ctrl & NAND_NCE) << 14;
- bits |= (ctrl & NAND_CLE) << 12;
- bits |= (ctrl & NAND_ALE) >> 1;
-
-#warning Wild guess as gpiosetout() is nowhere defined in the kernel source - tglx
- gpiosetout(0x5002, bits);
-
-#ifdef CONFIG_NAND_WORKAROUND
- /* "some" dev boards busted, blue wired to rts2 :( */
- rts2setout(2, (ctrl & NAND_CLE) << 1);
-#endif
- /* allow time to ensure gpio state to over take memory write */
- udelay(1);
- }
-
- if (cmd != NAND_CMD_NONE)
- writeb(cmd, chip->IO_ADDR_W);
-}
-
-/*
- * Main initialization routine
- */
-static int __init toto_init(void)
-{
- struct nand_chip *this;
- int err = 0;
-
- /* Allocate memory for MTD device structure and private data */
- toto_mtd = kmalloc(sizeof(struct mtd_info) + sizeof(struct nand_chip), GFP_KERNEL);
- if (!toto_mtd) {
- printk(KERN_WARNING "Unable to allocate toto NAND MTD device structure.\n");
- err = -ENOMEM;
- goto out;
- }
-
- /* Get pointer to private data */
- this = (struct nand_chip *)(&toto_mtd[1]);
-
- /* Initialize structures */
- memset(toto_mtd, 0, sizeof(struct mtd_info));
- memset(this, 0, sizeof(struct nand_chip));
-
- /* Link the private data with the MTD structure */
- toto_mtd->priv = this;
- toto_mtd->owner = THIS_MODULE;
-
- /* Set address of NAND IO lines */
- this->IO_ADDR_R = toto_io_base;
- this->IO_ADDR_W = toto_io_base;
- this->cmd_ctrl = toto_hwcontrol;
- this->dev_ready = NULL;
- /* 25 us command delay time */
- this->chip_delay = 30;
- this->ecc.mode = NAND_ECC_SOFT;
-
- /* Scan to find existance of the device */
- if (nand_scan(toto_mtd, 1)) {
- err = -ENXIO;
- goto out_mtd;
- }
-
- /* Register the partitions */
- switch (toto_mtd->size) {
- case SZ_64M:
- add_mtd_partitions(toto_mtd, partition_info64M, NUM_PARTITIONS64M);
- break;
- case SZ_32M:
- add_mtd_partitions(toto_mtd, partition_info32M, NUM_PARTITIONS32M);
- break;
- default:{
- printk(KERN_WARNING "Unsupported Nand device\n");
- err = -ENXIO;
- goto out_buf;
- }
- }
-
- gpioreserve(NAND_MASK); /* claim our gpios */
- archflashwp(0, 0); /* open up flash for writing */
-
- goto out;
-
- out_mtd:
- kfree(toto_mtd);
- out:
- return err;
-}
-
-module_init(toto_init);
-
-/*
- * Clean up routine
- */
-static void __exit toto_cleanup(void)
-{
- /* Release resources, unregister device */
- nand_release(toto_mtd);
-
- /* Free the MTD device structure */
- kfree(toto_mtd);
-
- /* stop flash writes */
- archflashwp(0, 1);
-
- /* release gpios to system */
- gpiorelease(NAND_MASK);
-}
-
-module_exit(toto_cleanup);
-
-MODULE_LICENSE("GPL");
-MODULE_AUTHOR("Richard Woodruff <r-woodruff2@ti.com>");
-MODULE_DESCRIPTION("Glue layer for NAND flash on toto board");
projects / linux-2.6-omap-h63xx.git / commitdiff