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authorjuhosg <juhosg@3c298f89-4303-0410-b956-a3cf2f4a3e73>2008-09-13 17:32:20 +0000
committerjuhosg <juhosg@3c298f89-4303-0410-b956-a3cf2f4a3e73>2008-09-13 17:32:20 +0000
commitb610f4bee85a6f89c767720b1943c7667f7a37ec (patch)
tree41f4281ba10a25b1f486187439631aabab54c8d1 /target/linux/adm5120/files/drivers/mtd
parentefd888e4be8c8b29a77a06a7e6ae1318badf9719 (diff)
[adm5120] remove 2.6.25 specific stuff
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@12598 3c298f89-4303-0410-b956-a3cf2f4a3e73
Diffstat (limited to 'target/linux/adm5120/files/drivers/mtd')
-rw-r--r--target/linux/adm5120/files/drivers/mtd/maps/adm5120-flash.c571
-rw-r--r--target/linux/adm5120/files/drivers/mtd/myloader.c167
-rw-r--r--target/linux/adm5120/files/drivers/mtd/trxsplit.c220
3 files changed, 0 insertions, 958 deletions
diff --git a/target/linux/adm5120/files/drivers/mtd/maps/adm5120-flash.c b/target/linux/adm5120/files/drivers/mtd/maps/adm5120-flash.c
deleted file mode 100644
index c637c4ff0..000000000
--- a/target/linux/adm5120/files/drivers/mtd/maps/adm5120-flash.c
+++ /dev/null
@@ -1,571 +0,0 @@
-/*
- * $Id$
- *
- * Platform driver for NOR flash devices on ADM5120 based boards
- *
- * Copyright (C) 2007 OpenWrt.org
- * Copyright (C) 2007 Gabor Juhos <juhosg at openwrt.org>
- *
- * This file was derived from: drivers/mtd/map/physmap.c
- * Copyright (C) 2003 MontaVista Software Inc.
- * Author: Jun Sun, jsun@mvista.com or jsun@junsun.net
- *
- * 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/module.h>
-#include <linux/types.h>
-#include <linux/kernel.h>
-#include <linux/init.h>
-#include <linux/slab.h>
-#include <linux/io.h>
-#include <linux/device.h>
-#include <linux/platform_device.h>
-
-#include <linux/mtd/mtd.h>
-#include <linux/mtd/map.h>
-#include <linux/mtd/partitions.h>
-
-#include <adm5120_defs.h>
-#include <adm5120_switch.h>
-#include <adm5120_mpmc.h>
-#include <adm5120_platform.h>
-
-#define DRV_NAME "adm5120-flash"
-#define DRV_DESC "ADM5120 flash MAP driver"
-#define MAX_PARSED_PARTS 8
-
-#ifdef ADM5120_FLASH_DEBUG
-#define MAP_DBG(m, f, a...) printk(KERN_INFO "%s: " f, (m->name) , ## a)
-#else
-#define MAP_DBG(m, f, a...) do {} while (0)
-#endif
-#define MAP_ERR(m, f, a...) printk(KERN_ERR "%s: " f, (m->name) , ## a)
-#define MAP_INFO(m, f, a...) printk(KERN_INFO "%s: " f, (m->name) , ## a)
-
-struct adm5120_map_info {
- struct map_info map;
- void (*switch_bank)(unsigned);
- unsigned long window_size;
-};
-
-struct adm5120_flash_info {
- struct mtd_info *mtd;
- struct resource *res;
- struct platform_device *dev;
- struct adm5120_map_info amap;
-#ifdef CONFIG_MTD_PARTITIONS
- int nr_parts;
- struct mtd_partition *parts[MAX_PARSED_PARTS];
-#endif
-};
-
-struct flash_desc {
- u32 phys;
- u32 srs_shift;
-};
-
-/*
- * Globals
- */
-static DEFINE_SPINLOCK(adm5120_flash_spin);
-#define FLASH_LOCK() spin_lock(&adm5120_flash_spin)
-#define FLASH_UNLOCK() spin_unlock(&adm5120_flash_spin)
-
-static u32 flash_bankwidths[4] = { 1, 2, 4, 0 };
-
-static u32 flash_sizes[8] = {
- 0, 512*1024, 1024*1024, 2*1024*1024,
- 4*1024*1024, 0, 0, 0
-};
-
-static struct flash_desc flash_descs[2] = {
- {
- .phys = ADM5120_SRAM0_BASE,
- .srs_shift = MEMCTRL_SRS0_SHIFT,
- }, {
- .phys = ADM5120_SRAM1_BASE,
- .srs_shift = MEMCTRL_SRS1_SHIFT,
- }
-};
-
-static const char *probe_types[] = {
- "cfi_probe",
- "jedec_probe",
- "map_rom",
- NULL
-};
-
-#ifdef CONFIG_MTD_PARTITIONS
-static const char *parse_types[] = {
- "cmdlinepart",
-#ifdef CONFIG_MTD_REDBOOT_PARTS
- "RedBoot",
-#endif
-#ifdef CONFIG_MTD_MYLOADER_PARTS
- "MyLoader",
-#endif
-};
-#endif
-
-#define BANK_SIZE (2<<20)
-#define BANK_SIZE_MAX (4<<20)
-#define BANK_OFFS_MASK (BANK_SIZE-1)
-#define BANK_START_MASK (~BANK_OFFS_MASK)
-
-static inline struct adm5120_map_info *map_to_amap(struct map_info *map)
-{
- return (struct adm5120_map_info *)map;
-}
-
-static void adm5120_flash_switchbank(struct map_info *map,
- unsigned long ofs)
-{
- struct adm5120_map_info *amap = map_to_amap(map);
- unsigned bank;
-
- if (amap->switch_bank == NULL)
- return;
-
- bank = (ofs & BANK_START_MASK) >> 21;
- if (bank > 1)
- BUG();
-
- MAP_DBG(map, "switching to bank %u, ofs=%lX\n", bank, ofs);
- amap->switch_bank(bank);
-}
-
-static map_word adm5120_flash_read(struct map_info *map, unsigned long ofs)
-{
- struct adm5120_map_info *amap = map_to_amap(map);
- map_word ret;
-
- MAP_DBG(map, "reading from ofs %lX\n", ofs);
-
- if (ofs >= amap->window_size)
- return map_word_ff(map);
-
- FLASH_LOCK();
- adm5120_flash_switchbank(map, ofs);
- ret = inline_map_read(map, (ofs & (amap->window_size-1)));
- FLASH_UNLOCK();
-
- return ret;
-}
-
-static void adm5120_flash_write(struct map_info *map, const map_word datum,
- unsigned long ofs)
-{
- struct adm5120_map_info *amap = map_to_amap(map);
-
- MAP_DBG(map, "writing to ofs %lX\n", ofs);
-
- if (ofs > amap->window_size)
- return;
-
- FLASH_LOCK();
- adm5120_flash_switchbank(map, ofs);
- inline_map_write(map, datum, (ofs & (amap->window_size-1)));
- FLASH_UNLOCK();
-}
-
-static void adm5120_flash_copy_from(struct map_info *map, void *to,
- unsigned long from, ssize_t len)
-{
- struct adm5120_map_info *amap = map_to_amap(map);
- char *p;
- ssize_t t;
-
- MAP_DBG(map, "copy_from, to=%lX, from=%lX, len=%lX\n",
- (unsigned long)to, from, (unsigned long)len);
-
- if (from > amap->window_size)
- return;
-
- p = (char *)to;
- while (len > 0) {
- t = len;
- if ((from < BANK_SIZE) && ((from+len) > BANK_SIZE))
- t = BANK_SIZE-from;
-
- FLASH_LOCK();
- MAP_DBG(map, "copying %lu byte(s) from %lX to %lX\n",
- (unsigned long)t, (from & (amap->window_size-1)),
- (unsigned long)p);
- adm5120_flash_switchbank(map, from);
- inline_map_copy_from(map, p, (from & (amap->window_size-1)), t);
- FLASH_UNLOCK();
- p += t;
- from += t;
- len -= t;
- }
-}
-
-static int adm5120_flash_initres(struct adm5120_flash_info *info)
-{
- struct map_info *map = &info->amap.map;
- int err = 0;
-
- info->res = request_mem_region(map->phys, info->amap.window_size,
- map->name);
- if (info->res == NULL) {
- MAP_ERR(map, "could not reserve memory region\n");
- err = -ENOMEM;
- goto out;
- }
-
- map->virt = ioremap_nocache(map->phys, info->amap.window_size);
- if (map->virt == NULL) {
- MAP_ERR(map, "failed to ioremap flash region\n");
- err = -ENOMEM;
- goto out;
- }
-
-out:
- return err;
-}
-
-static int adm5120_flash_initinfo(struct adm5120_flash_info *info,
- struct platform_device *dev)
-{
- struct map_info *map = &info->amap.map;
- struct adm5120_flash_platform_data *pdata = dev->dev.platform_data;
- struct flash_desc *fdesc;
- u32 t = 0;
-
- map->name = dev->dev.bus_id;
-
- if (dev->id > 1) {
- MAP_ERR(map, "invalid flash id\n");
- goto err_out;
- }
-
- fdesc = &flash_descs[dev->id];
-
- if (pdata)
- info->amap.window_size = pdata->window_size;
-
- if (info->amap.window_size == 0) {
- /* get memory window size */
- t = SW_READ_REG(SWITCH_REG_MEMCTRL) >> fdesc->srs_shift;
- t &= MEMCTRL_SRS_MASK;
- info->amap.window_size = flash_sizes[t];
- }
-
- if (info->amap.window_size == 0) {
- MAP_ERR(map, "unable to determine window size\n");
- goto err_out;
- }
-
- /* get flash bus width */
- switch (dev->id) {
- case 0:
- t = MPMC_READ_REG(SC1) & SC_MW_MASK;
- break;
- case 1:
- t = MPMC_READ_REG(SC0) & SC_MW_MASK;
- break;
- }
- map->bankwidth = flash_bankwidths[t];
- if (map->bankwidth == 0) {
- MAP_ERR(map, "invalid bus width detected\n");
- goto err_out;
- }
-
- map->phys = fdesc->phys;
- map->size = BANK_SIZE_MAX;
-
- simple_map_init(map);
- map->read = adm5120_flash_read;
- map->write = adm5120_flash_write;
- map->copy_from = adm5120_flash_copy_from;
-
- if (pdata) {
- map->set_vpp = pdata->set_vpp;
- info->amap.switch_bank = pdata->switch_bank;
- }
-
- info->dev = dev;
-
- MAP_INFO(map, "probing at 0x%lX, size:%ldKiB, width:%d bits\n",
- (unsigned long)map->phys,
- (unsigned long)info->amap.window_size >> 10,
- map->bankwidth*8);
-
- return 0;
-
-err_out:
- return -ENODEV;
-}
-
-static void adm5120_flash_initbanks(struct adm5120_flash_info *info)
-{
- struct map_info *map = &info->amap.map;
-
- if (info->mtd->size <= BANK_SIZE)
- /* no bank switching needed */
- return;
-
- if (info->amap.switch_bank) {
- info->amap.window_size = info->mtd->size;
- return;
- }
-
- MAP_ERR(map, "reduce visibility from %ldKiB to %ldKiB\n",
- (unsigned long)map->size >> 10,
- (unsigned long)info->mtd->size >> 10);
-
- info->mtd->size = info->amap.window_size;
-}
-
-#ifdef CONFIG_MTD_PARTITIONS
-static int adm5120_flash_initparts(struct adm5120_flash_info *info)
-{
- struct adm5120_flash_platform_data *pdata;
- struct map_info *map = &info->amap.map;
- int num_parsers;
- const char *parser[2];
- int err = 0;
- int nr_parts;
- int i;
-
- info->nr_parts = 0;
-
- pdata = info->dev->dev.platform_data;
- if (pdata == NULL)
- goto out;
-
- if (pdata->nr_parts) {
- MAP_INFO(map, "adding static partitions\n");
- err = add_mtd_partitions(info->mtd, pdata->parts,
- pdata->nr_parts);
- if (err == 0) {
- info->nr_parts += pdata->nr_parts;
- goto out;
- }
- }
-
- num_parsers = ARRAY_SIZE(parse_types);
- if (num_parsers > MAX_PARSED_PARTS)
- num_parsers = MAX_PARSED_PARTS;
-
- parser[1] = NULL;
- for (i = 0; i < num_parsers; i++) {
- parser[0] = parse_types[i];
-
- MAP_INFO(map, "parsing \"%s\" partitions\n",
- parser[0]);
- nr_parts = parse_mtd_partitions(info->mtd, parser,
- &info->parts[i], 0);
-
- if (nr_parts <= 0)
- continue;
-
- MAP_INFO(map, "adding \"%s\" partitions\n",
- parser[0]);
-
- err = add_mtd_partitions(info->mtd, info->parts[i], nr_parts);
- if (err)
- break;
-
- info->nr_parts += nr_parts;
- }
-out:
- return err;
-}
-#else
-static int adm5120_flash_initparts(struct adm5120_flash_info *info)
-{
- return 0;
-}
-#endif /* CONFIG_MTD_PARTITIONS */
-
-#ifdef CONFIG_MTD_PARTITIONS
-static void adm5120_flash_remove_mtd(struct adm5120_flash_info *info)
-{
- int i;
-
- if (info->nr_parts) {
- del_mtd_partitions(info->mtd);
- for (i = 0; i < MAX_PARSED_PARTS; i++)
- if (info->parts[i] != NULL)
- kfree(info->parts[i]);
- } else {
- del_mtd_device(info->mtd);
- }
-}
-#else
-static void adm5120_flash_remove_mtd(struct adm5120_flash_info *info)
-{
- del_mtd_device(info->mtd);
-}
-#endif
-
-static int adm5120_flash_remove(struct platform_device *dev)
-{
- struct adm5120_flash_info *info;
-
- info = platform_get_drvdata(dev);
- if (info == NULL)
- return 0;
-
- platform_set_drvdata(dev, NULL);
-
- if (info->mtd != NULL) {
- adm5120_flash_remove_mtd(info);
- map_destroy(info->mtd);
- }
-
- if (info->amap.map.virt != NULL)
- iounmap(info->amap.map.virt);
-
- if (info->res != NULL) {
- release_resource(info->res);
- kfree(info->res);
- }
-
- return 0;
-}
-
-static int adm5120_flash_probe(struct platform_device *dev)
-{
- struct adm5120_flash_info *info;
- struct map_info *map;
- const char **probe_type;
- int err;
-
- info = kzalloc(sizeof(*info), GFP_KERNEL);
- if (info == NULL) {
- err = -ENOMEM;
- goto err_out;
- }
-
- platform_set_drvdata(dev, info);
-
- err = adm5120_flash_initinfo(info, dev);
- if (err)
- goto err_out;
-
- err = adm5120_flash_initres(info);
- if (err)
- goto err_out;
-
- map = &info->amap.map;
- for (probe_type = probe_types; info->mtd == NULL && *probe_type != NULL;
- probe_type++)
- info->mtd = do_map_probe(*probe_type, map);
-
- if (info->mtd == NULL) {
- MAP_ERR(map, "map_probe failed\n");
- err = -ENXIO;
- goto err_out;
- }
-
- adm5120_flash_initbanks(info);
-
- if (info->mtd->size < info->amap.window_size) {
- /* readjust resources */
- iounmap(map->virt);
- release_resource(info->res);
- kfree(info->res);
-
- info->amap.window_size = info->mtd->size;
- map->size = info->mtd->size;
- MAP_INFO(map, "reducing map size to %ldKiB\n",
- (unsigned long)map->size >> 10);
- err = adm5120_flash_initres(info);
- if (err)
- goto err_out;
- }
-
- MAP_INFO(map, "found at 0x%lX, size:%ldKiB, width:%d bits\n",
- (unsigned long)map->phys, (unsigned long)info->mtd->size >> 10,
- map->bankwidth*8);
-
- info->mtd->owner = THIS_MODULE;
-
- err = adm5120_flash_initparts(info);
- if (err)
- goto err_out;
-
- if (info->nr_parts == 0) {
- MAP_INFO(map, "no partitions available, registering "
- "whole flash\n");
- add_mtd_device(info->mtd);
- }
-
- return 0;
-
-err_out:
- adm5120_flash_remove(dev);
- return err;
-}
-
-#ifdef CONFIG_PM
-static int adm5120_flash_suspend(struct platform_device *dev,
- pm_message_t state)
-{
- struct adm5120_flash_info *info = platform_get_drvdata(dev);
- int ret = 0;
-
- if (info)
- ret = info->mtd->suspend(info->mtd);
-
- return ret;
-}
-
-static int adm5120_flash_resume(struct platform_device *dev)
-{
- struct adm5120_flash_info *info = platform_get_drvdata(dev);
-
- if (info)
- info->mtd->resume(info->mtd);
-
- return 0;
-}
-
-static void adm5120_flash_shutdown(struct platform_device *dev)
-{
- struct adm5120_flash_info *info = platform_get_drvdata(dev);
-
- if (info && info->mtd->suspend(info->mtd) == 0)
- info->mtd->resume(info->mtd);
-}
-#endif
-
-static struct platform_driver adm5120_flash_driver = {
- .probe = adm5120_flash_probe,
- .remove = adm5120_flash_remove,
-#ifdef CONFIG_PM
- .suspend = adm5120_flash_suspend,
- .resume = adm5120_flash_resume,
- .shutdown = adm5120_flash_shutdown,
-#endif
- .driver = {
- .name = DRV_NAME,
- },
-};
-
-static int __init adm5120_flash_init(void)
-{
- int err;
-
- err = platform_driver_register(&adm5120_flash_driver);
-
- return err;
-}
-
-static void __exit adm5120_flash_exit(void)
-{
- platform_driver_unregister(&adm5120_flash_driver);
-}
-
-module_init(adm5120_flash_init);
-module_exit(adm5120_flash_exit);
-
-MODULE_LICENSE("GPL v2");
-MODULE_AUTHOR("Gabor Juhos <juhosg at openwrt.org>");
-MODULE_DESCRIPTION(DRV_DESC);
diff --git a/target/linux/adm5120/files/drivers/mtd/myloader.c b/target/linux/adm5120/files/drivers/mtd/myloader.c
deleted file mode 100644
index 9dab9d18d..000000000
--- a/target/linux/adm5120/files/drivers/mtd/myloader.c
+++ /dev/null
@@ -1,167 +0,0 @@
-/*
- * $Id$
- *
- * Parse MyLoader-style flash partition tables and produce a Linux partition
- * array to match.
- *
- * Copyright (C) 2007 OpenWrt.org
- * Copyright (C) 2007 Gabor Juhos <juhosg at openwrt.org>
- *
- * This file was based on drivers/mtd/redboot.c
- * Author: Red Hat, Inc. - David Woodhouse <dwmw2@cambridge.redhat.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/slab.h>
-#include <linux/init.h>
-#include <linux/vmalloc.h>
-
-#include <linux/mtd/mtd.h>
-#include <linux/mtd/partitions.h>
-
-#include <linux/byteorder/generic.h>
-
-#include <prom/myloader.h>
-
-#define NAME_LEN_MAX 20
-#define NAME_MYLOADER "MyLoader"
-#define NAME_PARTITION_TABLE "Partition Table"
-#define BLOCK_LEN_MIN 0x10000
-
-int parse_myloader_partitions(struct mtd_info *master,
- struct mtd_partition **pparts,
- unsigned long origin)
-{
- struct mylo_partition_table *tab;
- struct mylo_partition *part;
- struct mtd_partition *mtd_parts;
- struct mtd_partition *mtd_part;
- int num_parts;
- int ret, i;
- size_t retlen;
- char *names;
- unsigned long offset;
- unsigned long blocklen;
-
- tab = vmalloc(sizeof(*tab));
- if (!tab) {
- return -ENOMEM;
- goto out;
- }
-
- blocklen = master->erasesize;
- if (blocklen < BLOCK_LEN_MIN)
- blocklen = BLOCK_LEN_MIN;
-
- /* Partition Table is always located on the second erase block */
- offset = blocklen;
- printk(KERN_NOTICE "%s: searching for MyLoader partition table at "
- "offset 0x%lx\n", master->name, offset);
-
- ret = master->read(master, offset, sizeof(*tab), &retlen, (void *)tab);
- if (ret)
- goto out;
-
- if (retlen != sizeof(*tab)) {
- ret = -EIO;
- goto out_free_buf;
- }
-
- /* Check for Partition Table magic number */
- if (tab->magic != le32_to_cpu(MYLO_MAGIC_PARTITIONS)) {
- printk(KERN_NOTICE "%s: no MyLoader partition table found\n",
- master->name);
- ret = 0;
- goto out_free_buf;
- }
-
- /* The MyLoader and the Partition Table is always present */
- num_parts = 2;
-
- /* Detect number of used partitions */
- for (i = 0; i < MYLO_MAX_PARTITIONS; i++) {
- part = &tab->partitions[i];
-
- if (le16_to_cpu(part->type) == PARTITION_TYPE_FREE)
- continue;
-
- num_parts++;
- }
-
- mtd_parts = kzalloc((num_parts * sizeof(*mtd_part) +
- num_parts * NAME_LEN_MAX), GFP_KERNEL);
-
- if (!mtd_parts) {
- ret = -ENOMEM;
- goto out_free_buf;
- }
-
- mtd_part = mtd_parts;
- names = (char *)&mtd_parts[num_parts];
-
- strncpy(names, NAME_MYLOADER, NAME_LEN_MAX-1);
- mtd_part->name = names;
- mtd_part->offset = 0;
- mtd_part->size = blocklen;
- mtd_part->mask_flags = MTD_WRITEABLE;
- mtd_part++;
- names += NAME_LEN_MAX;
-
- strncpy(names, NAME_PARTITION_TABLE, NAME_LEN_MAX-1);
- mtd_part->name = names;
- mtd_part->offset = blocklen;
- mtd_part->size = blocklen;
- mtd_part->mask_flags = MTD_WRITEABLE;
- mtd_part++;
- names += NAME_LEN_MAX;
-
- for (i = 0; i < MYLO_MAX_PARTITIONS; i++) {
- part = &tab->partitions[i];
-
- if (le16_to_cpu(part->type) == PARTITION_TYPE_FREE)
- continue;
-
- sprintf(names, "partition%d", i);
- mtd_part->offset = le32_to_cpu(part->addr);
- mtd_part->size = le32_to_cpu(part->size);
- mtd_part->name = names;
- mtd_part++;
- names += NAME_LEN_MAX;
- }
-
- *pparts = mtd_parts;
- ret = num_parts;
-
-out_free_buf:
- vfree(tab);
-out:
- return ret;
-}
-
-static struct mtd_part_parser mylo_mtd_parser = {
- .owner = THIS_MODULE,
- .parse_fn = parse_myloader_partitions,
- .name = NAME_MYLOADER,
-};
-
-static int __init mylo_mtd_parser_init(void)
-{
- return register_mtd_parser(&mylo_mtd_parser);
-}
-
-static void __exit mylo_mtd_parser_exit(void)
-{
- deregister_mtd_parser(&mylo_mtd_parser);
-}
-
-module_init(mylo_mtd_parser_init);
-module_exit(mylo_mtd_parser_exit);
-
-MODULE_AUTHOR("Gabor Juhos <juhosg at openwrt.org>");
-MODULE_DESCRIPTION("Parsing code for MyLoader partition tables");
-MODULE_LICENSE("GPL v2");
diff --git a/target/linux/adm5120/files/drivers/mtd/trxsplit.c b/target/linux/adm5120/files/drivers/mtd/trxsplit.c
deleted file mode 100644
index 49eb0f979..000000000
--- a/target/linux/adm5120/files/drivers/mtd/trxsplit.c
+++ /dev/null
@@ -1,220 +0,0 @@
-/*
- * $Id$
- *
- * Copyright (C) 2007 OpenWrt.org
- * Copyright (C) Gabor Juhos <juhosg at openwrt.org>
- *
- * 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/module.h>
-#include <linux/types.h>
-#include <linux/kernel.h>
-#include <linux/slab.h>
-#include <linux/list.h>
-#include <linux/kmod.h>
-#include <linux/root_dev.h>
-
-#include <linux/mtd/mtd.h>
-#include <linux/mtd/partitions.h>
-
-#include <linux/byteorder/generic.h>
-
-#define PFX "trxsplit: "
-
-#define TRX_MAGIC 0x30524448 /* "HDR0" */
-#define TRX_VERSION 1
-#define TRX_MAX_LEN 0x3A0000
-#define TRX_NO_HEADER 0x1 /* do not write TRX header */
-#define TRX_GZ_FILES 0x2 /* contains individual gzip files */
-#define TRX_MAX_OFFSET 3
-#define TRX_MIN_KERNEL_SIZE 256*1024
-
-struct trx_header {
- u32 magic; /* "HDR0" */
- u32 len; /* Length of file including header */
- u32 crc32; /* 32-bit CRC from flag_version to end of file */
- u32 flag_version; /* 0:15 flags, 16:31 version */
- u32 offsets[TRX_MAX_OFFSET]; /* Offsets of partitions */
-};
-
-#define TRX_ALIGN 0x1000
-
-static int trx_nr_parts;
-static unsigned long trx_offset;
-static struct mtd_info *trx_mtd;
-static struct mtd_partition trx_parts[TRX_MAX_OFFSET];
-static struct trx_header trx_hdr;
-
-static int trxsplit_refresh_partitions(struct mtd_info *mtd);
-
-static int trxsplit_checktrx(struct mtd_info *mtd, unsigned long offset)
-{
- size_t retlen;
- int err;
-
- err = mtd->read(mtd, offset, sizeof(trx_hdr), &retlen,
- (void *)&trx_hdr);
- if (err) {
- printk(KERN_ALERT PFX "unable to read from '%s'\n", mtd->name);
- goto err_out;
- }
-
- if (retlen != sizeof(trx_hdr)) {
- printk(KERN_ALERT PFX "reading failed on '%s'\n", mtd->name);
- goto err_out;
- }
-
- trx_hdr.magic = le32_to_cpu(trx_hdr.magic);
- trx_hdr.len = le32_to_cpu(trx_hdr.len);
- trx_hdr.crc32 = le32_to_cpu(trx_hdr.crc32);
- trx_hdr.flag_version = le32_to_cpu(trx_hdr.flag_version);
- trx_hdr.offsets[0] = le32_to_cpu(trx_hdr.offsets[0]);
- trx_hdr.offsets[1] = le32_to_cpu(trx_hdr.offsets[1]);
- trx_hdr.offsets[2] = le32_to_cpu(trx_hdr.offsets[2]);
-
- /* sanity checks */
- if (trx_hdr.magic != TRX_MAGIC)
- goto err_out;
-
- if (trx_hdr.len > mtd->size - offset)
- goto err_out;
-
- /* TODO: add crc32 checking too? */
-
- return 0;
-
-err_out:
- return -1;
-}
-
-static void trxsplit_findtrx(struct mtd_info *mtd)
-{
- unsigned long offset;
- int err;
-
- printk(KERN_INFO PFX "searching TRX header in '%s'\n", mtd->name);
-
- err = 0;
- for (offset = 0; offset < mtd->size; offset += TRX_ALIGN) {
- err = trxsplit_checktrx(mtd, offset);
- if (err == 0)
- break;
- }
-
- if (err)
- return;
-
- printk(KERN_INFO PFX "TRX header found at 0x%lX\n", offset);
-
- trx_mtd = mtd;
- trx_offset = offset;
-}
-
-static void trxsplit_create_partitions(struct mtd_info *mtd)
-{
- struct mtd_partition *part = trx_parts;
- int err;
- int i;
-
- for (i = 0; i < TRX_MAX_OFFSET; i++) {
- part = &trx_parts[i];
- if (trx_hdr.offsets[i] == 0)
- continue;
- part->offset = trx_offset + trx_hdr.offsets[i];
- trx_nr_parts++;
- }
-
- for (i = 0; i < trx_nr_parts-1; i++)
- trx_parts[i].size = trx_parts[i+1].offset - trx_parts[i].offset;
-
- trx_parts[i].size = mtd->size - trx_parts[i].offset;
-
- i = 0;
- part = &trx_parts[i];
- if (part->size < TRX_MIN_KERNEL_SIZE) {
- part->name = "loader";
- i++;
- }
-
- part = &trx_parts[i];
- part->name = "kernel";
- i++;
-
- part = &trx_parts[i];
- part->name = "rootfs";
-
- err = add_mtd_partitions(mtd, trx_parts, trx_nr_parts);
- if (err) {
- printk(KERN_ALERT PFX "adding TRX partitions failed\n");
- return;
- }
-
- mtd->refresh_device = trxsplit_refresh_partitions;
-}
-
-static int trxsplit_refresh_partitions(struct mtd_info *mtd)
-{
- printk(KERN_INFO PFX "refreshing TRX partitions in '%s' (%d,%d)\n",
- mtd->name, MTD_BLOCK_MAJOR, mtd->index);
-
- /* remove old partitions */
- del_mtd_partitions(mtd);
-
- trxsplit_findtrx(mtd);
- if (!trx_mtd)
- goto err;
-
- trxsplit_create_partitions(trx_mtd);
- return 1;
-
-err:
- return 0;
-}
-
-static void __init trxsplit_add_mtd(struct mtd_info *mtd)
-{
- if (mtd->type != MTD_NORFLASH) {
- printk(KERN_INFO PFX "'%s' is not a NOR flash, skipped\n",
- mtd->name);
- return;
- }
-
- if (!trx_mtd)
- trxsplit_findtrx(mtd);
-}
-
-static void __init trxsplit_remove_mtd(struct mtd_info *mtd)
-{
- /* nothing to do */
-}
-
-static struct mtd_notifier trxsplit_notifier __initdata = {
- .add = trxsplit_add_mtd,
- .remove = trxsplit_remove_mtd,
-};
-
-static void __init trxsplit_scan(void)
-{
- register_mtd_user(&trxsplit_notifier);
- unregister_mtd_user(&trxsplit_notifier);
-}
-
-static int __init trxsplit_init(void)
-{
- trxsplit_scan();
-
- if (trx_mtd) {
- printk(KERN_INFO PFX "creating TRX partitions in '%s' "
- "(%d,%d)\n", trx_mtd->name, MTD_BLOCK_MAJOR,
- trx_mtd->index);
- trxsplit_create_partitions(trx_mtd);
- }
-
- return 0;
-}
-
-late_initcall(trxsplit_init);