diff options
Diffstat (limited to 'drivers/mtd/maps/tqm8xxl.c')
| -rw-r--r-- | drivers/mtd/maps/tqm8xxl.c | 249 |
1 files changed, 0 insertions, 249 deletions
diff --git a/drivers/mtd/maps/tqm8xxl.c b/drivers/mtd/maps/tqm8xxl.c deleted file mode 100644 index d78587990e7e..000000000000 --- a/drivers/mtd/maps/tqm8xxl.c +++ /dev/null @@ -1,249 +0,0 @@ -/* - * Handle mapping of the flash memory access routines - * on TQM8xxL based devices. - * - * based on rpxlite.c - * - * Copyright(C) 2001 Kirk Lee <kirk@hpc.ee.ntu.edu.tw> - * - * This code is GPLed - * - */ - -/* - * According to TQM8xxL hardware manual, TQM8xxL series have - * following flash memory organisations: - * | capacity | | chip type | | bank0 | | bank1 | - * 2MiB 512Kx16 2MiB 0 - * 4MiB 1Mx16 4MiB 0 - * 8MiB 1Mx16 4MiB 4MiB - * Thus, we choose CONFIG_MTD_CFI_I2 & CONFIG_MTD_CFI_B4 at - * kernel configuration. - */ -#include <linux/module.h> -#include <linux/types.h> -#include <linux/kernel.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/io.h> - -#define FLASH_ADDR 0x40000000 -#define FLASH_SIZE 0x00800000 -#define FLASH_BANK_MAX 4 - -// trivial struct to describe partition information -struct mtd_part_def -{ - int nums; - unsigned char *type; - struct mtd_partition* mtd_part; -}; - -//static struct mtd_info *mymtd; -static struct mtd_info* mtd_banks[FLASH_BANK_MAX]; -static struct map_info* map_banks[FLASH_BANK_MAX]; -static struct mtd_part_def part_banks[FLASH_BANK_MAX]; -static unsigned long num_banks; -static void __iomem *start_scan_addr; - -/* - * Here are partition information for all known TQM8xxL series devices. - * See include/linux/mtd/partitions.h for definition of the mtd_partition - * structure. - * - * The *_max_flash_size is the maximum possible mapped flash size which - * is not necessarily the actual flash size. It must correspond to the - * value specified in the mapping definition defined by the - * "struct map_desc *_io_desc" for the corresponding machine. - */ - -/* Currently, TQM8xxL has up to 8MiB flash */ -static unsigned long tqm8xxl_max_flash_size = 0x00800000; - -/* partition definition for first flash bank - * (cf. "drivers/char/flash_config.c") - */ -static struct mtd_partition tqm8xxl_partitions[] = { - { - .name = "ppcboot", - .offset = 0x00000000, - .size = 0x00020000, /* 128KB */ - .mask_flags = MTD_WRITEABLE, /* force read-only */ - }, - { - .name = "kernel", /* default kernel image */ - .offset = 0x00020000, - .size = 0x000e0000, - .mask_flags = MTD_WRITEABLE, /* force read-only */ - }, - { - .name = "user", - .offset = 0x00100000, - .size = 0x00100000, - }, - { - .name = "initrd", - .offset = 0x00200000, - .size = 0x00200000, - } -}; -/* partition definition for second flash bank */ -static struct mtd_partition tqm8xxl_fs_partitions[] = { - { - .name = "cramfs", - .offset = 0x00000000, - .size = 0x00200000, - }, - { - .name = "jffs", - .offset = 0x00200000, - .size = 0x00200000, - //.size = MTDPART_SIZ_FULL, - } -}; - -static int __init init_tqm_mtd(void) -{ - int idx = 0, ret = 0; - unsigned long flash_addr, flash_size, mtd_size = 0; - /* pointer to TQM8xxL board info data */ - bd_t *bd = (bd_t *)__res; - - flash_addr = bd->bi_flashstart; - flash_size = bd->bi_flashsize; - - //request maximum flash size address space - start_scan_addr = ioremap(flash_addr, flash_size); - if (!start_scan_addr) { - printk(KERN_WARNING "%s:Failed to ioremap address:0x%x\n", __func__, flash_addr); - return -EIO; - } - - for (idx = 0 ; idx < FLASH_BANK_MAX ; idx++) { - if(mtd_size >= flash_size) - break; - - printk(KERN_INFO "%s: chip probing count %d\n", __func__, idx); - - map_banks[idx] = kzalloc(sizeof(struct map_info), GFP_KERNEL); - if(map_banks[idx] == NULL) { - ret = -ENOMEM; - /* FIXME: What if some MTD devices were probed already? */ - goto error_mem; - } - - map_banks[idx]->name = kmalloc(16, GFP_KERNEL); - - if (!map_banks[idx]->name) { - ret = -ENOMEM; - /* FIXME: What if some MTD devices were probed already? */ - goto error_mem; - } - sprintf(map_banks[idx]->name, "TQM8xxL%d", idx); - - map_banks[idx]->size = flash_size; - map_banks[idx]->bankwidth = 4; - - simple_map_init(map_banks[idx]); - - map_banks[idx]->virt = start_scan_addr; - map_banks[idx]->phys = flash_addr; - /* FIXME: This looks utterly bogus, but I'm trying to - preserve the behaviour of the original (shown here)... - - map_banks[idx]->map_priv_1 = - start_scan_addr + ((idx > 0) ? - (mtd_banks[idx-1] ? mtd_banks[idx-1]->size : 0) : 0); - */ - - if (idx && mtd_banks[idx-1]) { - map_banks[idx]->virt += mtd_banks[idx-1]->size; - map_banks[idx]->phys += mtd_banks[idx-1]->size; - } - - //start to probe flash chips - mtd_banks[idx] = do_map_probe("cfi_probe", map_banks[idx]); - - if (mtd_banks[idx]) { - mtd_banks[idx]->owner = THIS_MODULE; - mtd_size += mtd_banks[idx]->size; - num_banks++; - - printk(KERN_INFO "%s: bank%d, name:%s, size:%dbytes \n", __func__, num_banks, - mtd_banks[idx]->name, mtd_banks[idx]->size); - } - } - - /* no supported flash chips found */ - if (!num_banks) { - printk(KERN_NOTICE "TQM8xxL: No support flash chips found!\n"); - ret = -ENXIO; - goto error_mem; - } - - /* - * Select Static partition definitions - */ - part_banks[0].mtd_part = tqm8xxl_partitions; - part_banks[0].type = "Static image"; - part_banks[0].nums = ARRAY_SIZE(tqm8xxl_partitions); - - part_banks[1].mtd_part = tqm8xxl_fs_partitions; - part_banks[1].type = "Static file system"; - part_banks[1].nums = ARRAY_SIZE(tqm8xxl_fs_partitions); - - for(idx = 0; idx < num_banks ; idx++) { - if (part_banks[idx].nums == 0) - printk(KERN_NOTICE "TQM flash%d: no partition info available, registering whole flash at once\n", idx); - else - printk(KERN_NOTICE "TQM flash%d: Using %s partition definition\n", - idx, part_banks[idx].type); - mtd_device_register(mtd_banks[idx], part_banks[idx].mtd_part, - part_banks[idx].nums); - } - return 0; -error_mem: - for(idx = 0 ; idx < FLASH_BANK_MAX ; idx++) { - if(map_banks[idx] != NULL) { - kfree(map_banks[idx]->name); - map_banks[idx]->name = NULL; - kfree(map_banks[idx]); - map_banks[idx] = NULL; - } - } -error: - iounmap(start_scan_addr); - return ret; -} - -static void __exit cleanup_tqm_mtd(void) -{ - unsigned int idx = 0; - for(idx = 0 ; idx < num_banks ; idx++) { - /* destroy mtd_info previously allocated */ - if (mtd_banks[idx]) { - mtd_device_unregister(mtd_banks[idx]); - map_destroy(mtd_banks[idx]); - } - /* release map_info not used anymore */ - kfree(map_banks[idx]->name); - kfree(map_banks[idx]); - } - - if (start_scan_addr) { - iounmap(start_scan_addr); - start_scan_addr = 0; - } -} - -module_init(init_tqm_mtd); -module_exit(cleanup_tqm_mtd); - -MODULE_LICENSE("GPL"); -MODULE_AUTHOR("Kirk Lee <kirk@hpc.ee.ntu.edu.tw>"); -MODULE_DESCRIPTION("MTD map driver for TQM8xxL boards"); |