diff options
Diffstat (limited to 'drivers/mtd')
97 files changed, 2285 insertions, 1530 deletions
diff --git a/drivers/mtd/Kconfig b/drivers/mtd/Kconfig index 318a869286a..1be62184140 100644 --- a/drivers/mtd/Kconfig +++ b/drivers/mtd/Kconfig @@ -140,6 +140,14 @@ config MTD_AR7_PARTS ---help--- TI AR7 partitioning support +config MTD_BCM63XX_PARTS + tristate "BCM63XX CFE partitioning support" + depends on BCM63XX + select CRC32 + help + This provides partions parsing for BCM63xx devices with CFE + bootloaders. + comment "User Modules And Translation Layers" config MTD_CHAR diff --git a/drivers/mtd/Makefile b/drivers/mtd/Makefile index 9aaac3ac89f..f90135429dc 100644 --- a/drivers/mtd/Makefile +++ b/drivers/mtd/Makefile @@ -11,6 +11,7 @@ obj-$(CONFIG_MTD_REDBOOT_PARTS) += redboot.o obj-$(CONFIG_MTD_CMDLINE_PARTS) += cmdlinepart.o obj-$(CONFIG_MTD_AFS_PARTS) += afs.o obj-$(CONFIG_MTD_AR7_PARTS) += ar7part.o +obj-$(CONFIG_MTD_BCM63XX_PARTS) += bcm63xxpart.o # 'Users' - code which presents functionality to userspace. obj-$(CONFIG_MTD_CHAR) += mtdchar.o diff --git a/drivers/mtd/afs.c b/drivers/mtd/afs.c index 89a02f6f65d..5a3942bf109 100644 --- a/drivers/mtd/afs.c +++ b/drivers/mtd/afs.c @@ -75,7 +75,7 @@ afs_read_footer(struct mtd_info *mtd, u_int *img_start, u_int *iis_start, size_t sz; int ret; - ret = mtd->read(mtd, ptr, sizeof(fs), &sz, (u_char *) &fs); + ret = mtd_read(mtd, ptr, sizeof(fs), &sz, (u_char *)&fs); if (ret >= 0 && sz != sizeof(fs)) ret = -EINVAL; @@ -132,7 +132,7 @@ afs_read_iis(struct mtd_info *mtd, struct image_info_struct *iis, u_int ptr) int ret, i; memset(iis, 0, sizeof(*iis)); - ret = mtd->read(mtd, ptr, sizeof(*iis), &sz, (u_char *) iis); + ret = mtd_read(mtd, ptr, sizeof(*iis), &sz, (u_char *)iis); if (ret < 0) goto failed; diff --git a/drivers/mtd/ar7part.c b/drivers/mtd/ar7part.c index f40ea454755..94539312995 100644 --- a/drivers/mtd/ar7part.c +++ b/drivers/mtd/ar7part.c @@ -73,8 +73,8 @@ static int create_mtd_partitions(struct mtd_info *master, do { /* Try 10 blocks starting from master->erasesize */ offset = pre_size; - master->read(master, offset, - sizeof(header), &len, (uint8_t *)&header); + mtd_read(master, offset, sizeof(header), &len, + (uint8_t *)&header); if (!strncmp((char *)&header, "TIENV0.8", 8)) ar7_parts[1].offset = pre_size; if (header.checksum == LOADER_MAGIC1) @@ -95,16 +95,16 @@ static int create_mtd_partitions(struct mtd_info *master, case LOADER_MAGIC1: while (header.length) { offset += sizeof(header) + header.length; - master->read(master, offset, sizeof(header), - &len, (uint8_t *)&header); + mtd_read(master, offset, sizeof(header), &len, + (uint8_t *)&header); } root_offset = offset + sizeof(header) + 4; break; case LOADER_MAGIC2: while (header.length) { offset += sizeof(header) + header.length; - master->read(master, offset, sizeof(header), - &len, (uint8_t *)&header); + mtd_read(master, offset, sizeof(header), &len, + (uint8_t *)&header); } root_offset = offset + sizeof(header) + 4 + 0xff; root_offset &= ~(uint32_t)0xff; @@ -114,8 +114,7 @@ static int create_mtd_partitions(struct mtd_info *master, break; } - master->read(master, root_offset, - sizeof(header), &len, (u8 *)&header); + mtd_read(master, root_offset, sizeof(header), &len, (u8 *)&header); if (header.checksum != SQUASHFS_MAGIC) { root_offset += master->erasesize - 1; root_offset &= ~(master->erasesize - 1); diff --git a/drivers/mtd/bcm63xxpart.c b/drivers/mtd/bcm63xxpart.c new file mode 100644 index 00000000000..608321ee056 --- /dev/null +++ b/drivers/mtd/bcm63xxpart.c @@ -0,0 +1,222 @@ +/* + * BCM63XX CFE image tag parser + * + * Copyright © 2006-2008 Florian Fainelli <florian@openwrt.org> + * Mike Albon <malbon@openwrt.org> + * Copyright © 2009-2010 Daniel Dickinson <openwrt@cshore.neomailbox.net> + * Copyright © 2011 Jonas Gorski <jonas.gorski@gmail.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + * + */ + +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt + +#include <linux/crc32.h> +#include <linux/module.h> +#include <linux/kernel.h> +#include <linux/slab.h> +#include <linux/vmalloc.h> +#include <linux/mtd/mtd.h> +#include <linux/mtd/partitions.h> + +#include <asm/mach-bcm63xx/bcm963xx_tag.h> +#include <asm/mach-bcm63xx/board_bcm963xx.h> + +#define BCM63XX_EXTENDED_SIZE 0xBFC00000 /* Extended flash address */ + +#define BCM63XX_MIN_CFE_SIZE 0x10000 /* always at least 64KiB */ +#define BCM63XX_MIN_NVRAM_SIZE 0x10000 /* always at least 64KiB */ + +#define BCM63XX_CFE_MAGIC_OFFSET 0x4e0 + +static int bcm63xx_detect_cfe(struct mtd_info *master) +{ + char buf[9]; + int ret; + size_t retlen; + + ret = mtd_read(master, BCM963XX_CFE_VERSION_OFFSET, 5, &retlen, + (void *)buf); + buf[retlen] = 0; + + if (ret) + return ret; + + if (strncmp("cfe-v", buf, 5) == 0) + return 0; + + /* very old CFE's do not have the cfe-v string, so check for magic */ + ret = mtd_read(master, BCM63XX_CFE_MAGIC_OFFSET, 8, &retlen, + (void *)buf); + buf[retlen] = 0; + + return strncmp("CFE1CFE1", buf, 8); +} + +static int bcm63xx_parse_cfe_partitions(struct mtd_info *master, + struct mtd_partition **pparts, + struct mtd_part_parser_data *data) +{ + /* CFE, NVRAM and global Linux are always present */ + int nrparts = 3, curpart = 0; + struct bcm_tag *buf; + struct mtd_partition *parts; + int ret; + size_t retlen; + unsigned int rootfsaddr, kerneladdr, spareaddr; + unsigned int rootfslen, kernellen, sparelen, totallen; + unsigned int cfelen, nvramlen; + int namelen = 0; + int i; + u32 computed_crc; + + if (bcm63xx_detect_cfe(master)) + return -EINVAL; + + cfelen = max_t(uint32_t, master->erasesize, BCM63XX_MIN_CFE_SIZE); + nvramlen = max_t(uint32_t, master->erasesize, BCM63XX_MIN_NVRAM_SIZE); + + /* Allocate memory for buffer */ + buf = vmalloc(sizeof(struct bcm_tag)); + if (!buf) + return -ENOMEM; + + /* Get the tag */ + ret = mtd_read(master, cfelen, sizeof(struct bcm_tag), &retlen, + (void *)buf); + + if (retlen != sizeof(struct bcm_tag)) { + vfree(buf); + return -EIO; + } + + computed_crc = crc32_le(IMAGETAG_CRC_START, (u8 *)buf, + offsetof(struct bcm_tag, header_crc)); + if (computed_crc == buf->header_crc) { + char *boardid = &(buf->board_id[0]); + char *tagversion = &(buf->tag_version[0]); + + sscanf(buf->kernel_address, "%u", &kerneladdr); + sscanf(buf->kernel_length, "%u", &kernellen); + sscanf(buf->total_length, "%u", &totallen); + + pr_info("CFE boot tag found with version %s and board type %s\n", + tagversion, boardid); + + kerneladdr = kerneladdr - BCM63XX_EXTENDED_SIZE; + rootfsaddr = kerneladdr + kernellen; + spareaddr = roundup(totallen, master->erasesize) + cfelen; + sparelen = master->size - spareaddr - nvramlen; + rootfslen = spareaddr - rootfsaddr; + } else { + pr_warn("CFE boot tag CRC invalid (expected %08x, actual %08x)\n", + buf->header_crc, computed_crc); + kernellen = 0; + rootfslen = 0; + rootfsaddr = 0; + spareaddr = cfelen; + sparelen = master->size - cfelen - nvramlen; + } + + /* Determine number of partitions */ |