diff options
Diffstat (limited to 'qemu/roms/u-boot/drivers/mtd/cfi_mtd.c')
-rw-r--r-- | qemu/roms/u-boot/drivers/mtd/cfi_mtd.c | 263 |
1 files changed, 0 insertions, 263 deletions
diff --git a/qemu/roms/u-boot/drivers/mtd/cfi_mtd.c b/qemu/roms/u-boot/drivers/mtd/cfi_mtd.c deleted file mode 100644 index ac805ff1e..000000000 --- a/qemu/roms/u-boot/drivers/mtd/cfi_mtd.c +++ /dev/null @@ -1,263 +0,0 @@ -/* - * (C) Copyright 2008 Semihalf - * - * Written by: Piotr Ziecik <kosmo@semihalf.com> - * - * SPDX-License-Identifier: GPL-2.0+ - */ - -#include <common.h> -#include <flash.h> -#include <malloc.h> - -#include <asm/errno.h> -#include <linux/mtd/mtd.h> -#include <linux/mtd/concat.h> -#include <mtd/cfi_flash.h> - -static struct mtd_info cfi_mtd_info[CFI_MAX_FLASH_BANKS]; -static char cfi_mtd_names[CFI_MAX_FLASH_BANKS][16]; -#ifdef CONFIG_MTD_CONCAT -static char c_mtd_name[16]; -#endif - -static int cfi_mtd_erase(struct mtd_info *mtd, struct erase_info *instr) -{ - flash_info_t *fi = mtd->priv; - size_t a_start = fi->start[0] + instr->addr; - size_t a_end = a_start + instr->len; - int s_first = -1; - int s_last = -1; - int error, sect; - - for (sect = 0; sect < fi->sector_count; sect++) { - if (a_start == fi->start[sect]) - s_first = sect; - - if (sect < fi->sector_count - 1) { - if (a_end == fi->start[sect + 1]) { - s_last = sect; - break; - } - } else { - s_last = sect; - break; - } - } - - if (s_first >= 0 && s_first <= s_last) { - instr->state = MTD_ERASING; - - flash_set_verbose(0); - error = flash_erase(fi, s_first, s_last); - flash_set_verbose(1); - - if (error) { - instr->state = MTD_ERASE_FAILED; - return -EIO; - } - - instr->state = MTD_ERASE_DONE; - mtd_erase_callback(instr); - return 0; - } - - return -EINVAL; -} - -static int cfi_mtd_read(struct mtd_info *mtd, loff_t from, size_t len, - size_t *retlen, u_char *buf) -{ - flash_info_t *fi = mtd->priv; - u_char *f = (u_char*)(fi->start[0]) + from; - - memcpy(buf, f, len); - *retlen = len; - - return 0; -} - -static int cfi_mtd_write(struct mtd_info *mtd, loff_t to, size_t len, - size_t *retlen, const u_char *buf) -{ - flash_info_t *fi = mtd->priv; - u_long t = fi->start[0] + to; - int error; - - flash_set_verbose(0); - error = write_buff(fi, (u_char*)buf, t, len); - flash_set_verbose(1); - - if (!error) { - *retlen = len; - return 0; - } - - return -EIO; -} - -static void cfi_mtd_sync(struct mtd_info *mtd) -{ - /* - * This function should wait until all pending operations - * finish. However this driver is fully synchronous, so - * this function returns immediately - */ -} - -static int cfi_mtd_lock(struct mtd_info *mtd, loff_t ofs, uint64_t len) -{ - flash_info_t *fi = mtd->priv; - - flash_set_verbose(0); - flash_protect(FLAG_PROTECT_SET, fi->start[0] + ofs, - fi->start[0] + ofs + len - 1, fi); - flash_set_verbose(1); - - return 0; -} - -static int cfi_mtd_unlock(struct mtd_info *mtd, loff_t ofs, uint64_t len) -{ - flash_info_t *fi = mtd->priv; - - flash_set_verbose(0); - flash_protect(FLAG_PROTECT_CLEAR, fi->start[0] + ofs, - fi->start[0] + ofs + len - 1, fi); - flash_set_verbose(1); - - return 0; -} - -static int cfi_mtd_set_erasesize(struct mtd_info *mtd, flash_info_t *fi) -{ - int sect_size = 0; - int sect_size_old = 0; - int sect; - int regions = 0; - int numblocks = 0; - ulong offset; - ulong base_addr; - - /* - * First detect the number of eraseregions so that we can allocate - * the array of eraseregions correctly - */ - for (sect = 0; sect < fi->sector_count; sect++) { - if (sect_size_old != flash_sector_size(fi, sect)) - regions++; - sect_size_old = flash_sector_size(fi, sect); - } - - switch (regions) { - case 0: - return 1; - case 1: /* flash has uniform erase size */ - mtd->numeraseregions = 0; - mtd->erasesize = sect_size_old; - return 0; - } - - mtd->numeraseregions = regions; - mtd->eraseregions = malloc(sizeof(struct mtd_erase_region_info) * regions); - - /* - * Now detect the largest sector and fill the eraseregions - */ - regions = 0; - base_addr = offset = fi->start[0]; - sect_size_old = flash_sector_size(fi, 0); - for (sect = 0; sect < fi->sector_count; sect++) { - if (sect_size_old != flash_sector_size(fi, sect)) { - mtd->eraseregions[regions].offset = offset - base_addr; - mtd->eraseregions[regions].erasesize = sect_size_old; - mtd->eraseregions[regions].numblocks = numblocks; - /* Now start counting the next eraseregions */ - numblocks = 0; - regions++; - offset = fi->start[sect]; - } - numblocks++; - - /* - * Select the largest sector size as erasesize (e.g. for UBI) - */ - if (flash_sector_size(fi, sect) > sect_size) - sect_size = flash_sector_size(fi, sect); - - sect_size_old = flash_sector_size(fi, sect); - } - - /* - * Set the last region - */ - mtd->eraseregions[regions].offset = offset - base_addr; - mtd->eraseregions[regions].erasesize = sect_size_old; - mtd->eraseregions[regions].numblocks = numblocks; - - mtd->erasesize = sect_size; - - return 0; -} - -int cfi_mtd_init(void) -{ - struct mtd_info *mtd; - flash_info_t *fi; - int error, i; -#ifdef CONFIG_MTD_CONCAT - int devices_found = 0; - struct mtd_info *mtd_list[CONFIG_SYS_MAX_FLASH_BANKS]; -#endif - - for (i = 0; i < CONFIG_SYS_MAX_FLASH_BANKS; i++) { - fi = &flash_info[i]; - mtd = &cfi_mtd_info[i]; - - memset(mtd, 0, sizeof(struct mtd_info)); - - error = cfi_mtd_set_erasesize(mtd, fi); - if (error) - continue; - - sprintf(cfi_mtd_names[i], "nor%d", i); - mtd->name = cfi_mtd_names[i]; - mtd->type = MTD_NORFLASH; - mtd->flags = MTD_CAP_NORFLASH; - mtd->size = fi->size; - mtd->writesize = 1; - - mtd->_erase = cfi_mtd_erase; - mtd->_read = cfi_mtd_read; - mtd->_write = cfi_mtd_write; - mtd->_sync = cfi_mtd_sync; - mtd->_lock = cfi_mtd_lock; - mtd->_unlock = cfi_mtd_unlock; - mtd->priv = fi; - - if (add_mtd_device(mtd)) - return -ENOMEM; - -#ifdef CONFIG_MTD_CONCAT - mtd_list[devices_found++] = mtd; -#endif - } - -#ifdef CONFIG_MTD_CONCAT - if (devices_found > 1) { - /* - * We detected multiple devices. Concatenate them together. - */ - sprintf(c_mtd_name, "nor%d", devices_found); - mtd = mtd_concat_create(mtd_list, devices_found, c_mtd_name); - - if (mtd == NULL) - return -ENXIO; - - if (add_mtd_device(mtd)) - return -ENOMEM; - } -#endif /* CONFIG_MTD_CONCAT */ - - return 0; -} |