diff options
Diffstat (limited to 'target/linux')
-rw-r--r-- | target/linux/generic/config-3.18 | 1 | ||||
-rw-r--r-- | target/linux/generic/config-4.1 | 1 | ||||
-rw-r--r-- | target/linux/generic/config-4.3 | 1 | ||||
-rw-r--r-- | target/linux/generic/config-4.4 | 1 | ||||
-rw-r--r-- | target/linux/generic/files/drivers/mtd/mtdsplit/Kconfig | 5 | ||||
-rw-r--r-- | target/linux/generic/files/drivers/mtd/mtdsplit/Makefile | 1 | ||||
-rw-r--r-- | target/linux/generic/files/drivers/mtd/mtdsplit/mtdsplit_brnimage.c | 104 |
7 files changed, 114 insertions, 0 deletions
diff --git a/target/linux/generic/config-3.18 b/target/linux/generic/config-3.18 index 36d8590..c8ba328 100644 --- a/target/linux/generic/config-3.18 +++ b/target/linux/generic/config-3.18 @@ -2265,6 +2265,7 @@ CONFIG_MTD_ROOTFS_SPLIT=y # CONFIG_MTD_SPI_NOR is not set # CONFIG_MTD_SPINAND_MT29F is not set CONFIG_MTD_SPLIT=y +# CONFIG_MTD_SPLIT_BRNIMAGE_FW is not set # CONFIG_MTD_SPLIT_FIRMWARE is not set CONFIG_MTD_SPLIT_FIRMWARE_NAME="firmware" # CONFIG_MTD_SPLIT_FIT_FW is not set diff --git a/target/linux/generic/config-4.1 b/target/linux/generic/config-4.1 index 0f76041..ade6807 100644 --- a/target/linux/generic/config-4.1 +++ b/target/linux/generic/config-4.1 @@ -2357,6 +2357,7 @@ CONFIG_MTD_ROOTFS_ROOT_DEV=y # CONFIG_MTD_SPI_NOR is not set # CONFIG_MTD_SPINAND_MT29F is not set CONFIG_MTD_SPLIT=y +# CONFIG_MTD_SPLIT_BRNIMAGE_FW is not set # CONFIG_MTD_SPLIT_FIRMWARE is not set CONFIG_MTD_SPLIT_FIRMWARE_NAME="firmware" # CONFIG_MTD_SPLIT_FIT_FW is not set diff --git a/target/linux/generic/config-4.3 b/target/linux/generic/config-4.3 index 5ec85fe..f5d8ce8 100644 --- a/target/linux/generic/config-4.3 +++ b/target/linux/generic/config-4.3 @@ -2415,6 +2415,7 @@ CONFIG_MTD_ROOTFS_ROOT_DEV=y # CONFIG_MTD_SPI_NOR is not set # CONFIG_MTD_SPINAND_MT29F is not set CONFIG_MTD_SPLIT=y +# CONFIG_MTD_SPLIT_BRNIMAGE_FW is not set # CONFIG_MTD_SPLIT_FIRMWARE is not set CONFIG_MTD_SPLIT_FIRMWARE_NAME="firmware" # CONFIG_MTD_SPLIT_FIT_FW is not set diff --git a/target/linux/generic/config-4.4 b/target/linux/generic/config-4.4 index 5313222..c27192d 100644 --- a/target/linux/generic/config-4.4 +++ b/target/linux/generic/config-4.4 @@ -2318,6 +2318,7 @@ CONFIG_MTD_ROOTFS_ROOT_DEV=y # CONFIG_MTD_SPI_NOR is not set # CONFIG_MTD_SPI_NOR_USE_4K_SECTORS is not set CONFIG_MTD_SPLIT=y +# CONFIG_MTD_SPLIT_BRNIMAGE_FW is not set # CONFIG_MTD_SPLIT_FIRMWARE is not set CONFIG_MTD_SPLIT_FIRMWARE_NAME="firmware" # CONFIG_MTD_SPLIT_FIT_FW is not set diff --git a/target/linux/generic/files/drivers/mtd/mtdsplit/Kconfig b/target/linux/generic/files/drivers/mtd/mtdsplit/Kconfig index c4e3418..0370a21 100644 --- a/target/linux/generic/files/drivers/mtd/mtdsplit/Kconfig +++ b/target/linux/generic/files/drivers/mtd/mtdsplit/Kconfig @@ -49,3 +49,8 @@ config MTD_SPLIT_TRX_FW bool "TRX image based firmware partition parser" depends on MTD_SPLIT_SUPPORT select MTD_SPLIT + +config MTD_SPLIT_BRNIMAGE_FW + bool "brnImage (brnboot image) firmware parser" + depends on MTD_SPLIT_SUPPORT + select MTD_SPLIT diff --git a/target/linux/generic/files/drivers/mtd/mtdsplit/Makefile b/target/linux/generic/files/drivers/mtd/mtdsplit/Makefile index e09476b..ca24c71 100644 --- a/target/linux/generic/files/drivers/mtd/mtdsplit/Makefile +++ b/target/linux/generic/files/drivers/mtd/mtdsplit/Makefile @@ -6,3 +6,4 @@ obj-$(CONFIG_MTD_SPLIT_FIT_FW) += mtdsplit_fit.o obj-$(CONFIG_MTD_SPLIT_LZMA_FW) += mtdsplit_lzma.o obj-$(CONFIG_MTD_SPLIT_TPLINK_FW) += mtdsplit_tplink.o obj-$(CONFIG_MTD_SPLIT_TRX_FW) += mtdsplit_trx.o +obj-$(CONFIG_MTD_SPLIT_BRNIMAGE_FW) += mtdsplit_brnimage.o diff --git a/target/linux/generic/files/drivers/mtd/mtdsplit/mtdsplit_brnimage.c b/target/linux/generic/files/drivers/mtd/mtdsplit/mtdsplit_brnimage.c new file mode 100644 index 0000000..7ddd69b --- /dev/null +++ b/target/linux/generic/files/drivers/mtd/mtdsplit/mtdsplit_brnimage.c @@ -0,0 +1,104 @@ +/* + * Copyright (C) 2012 John Crispin <blogic@openwrt.org> + * Copyright (C) 2015 Martin Blumenstingl <martin.blumenstingl@googlemail.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/module.h> +#include <linux/init.h> +#include <linux/kernel.h> +#include <linux/slab.h> +#include <linux/mtd/mtd.h> +#include <linux/mtd/partitions.h> +#include <linux/byteorder/generic.h> + +#include "mtdsplit.h" + +#define BRNIMAGE_NR_PARTS 2 + +#define BRNIMAGE_ALIGN_BYTES 0x400 +#define BRNIMAGE_FOOTER_SIZE 12 + +#define BRNIMAGE_MIN_OVERHEAD (BRNIMAGE_FOOTER_SIZE) +#define BRNIMAGE_MAX_OVERHEAD (BRNIMAGE_ALIGN_BYTES + BRNIMAGE_FOOTER_SIZE) + +static int mtdsplit_parse_brnimage(struct mtd_info *master, + struct mtd_partition **pparts, + struct mtd_part_parser_data *data) +{ + struct mtd_partition *parts; + uint32_t buf; + unsigned long rootfs_offset, rootfs_size, kernel_size; + size_t len; + int ret; + + for (rootfs_offset = 0; rootfs_offset < master->size; + rootfs_offset += BRNIMAGE_ALIGN_BYTES) { + ret = mtd_check_rootfs_magic(master, rootfs_offset); + if (!ret) + break; + } + + if (ret) + return ret; + + if (rootfs_offset >= master->size) + return -EINVAL; + + ret = mtd_read(master, rootfs_offset - BRNIMAGE_FOOTER_SIZE, 4, &len, + (void *)&buf); + if (ret) + return ret; + + if (len != 4) + return -EIO; + + kernel_size = le32_to_cpu(buf); + + if (kernel_size > (rootfs_offset - BRNIMAGE_MIN_OVERHEAD)) + return -EINVAL; + + if (kernel_size < (rootfs_offset - BRNIMAGE_MAX_OVERHEAD)) + return -EINVAL; + + /* + * The footer must be untouched as it contains the checksum of the + * original brnImage (kernel + squashfs)! + */ + rootfs_size = master->size - rootfs_offset - BRNIMAGE_FOOTER_SIZE; + + parts = kzalloc(BRNIMAGE_NR_PARTS * sizeof(*parts), GFP_KERNEL); + if (!parts) + return -ENOMEM; + + parts[0].name = KERNEL_PART_NAME; + parts[0].offset = 0; + parts[0].size = kernel_size; + + parts[1].name = ROOTFS_PART_NAME; + parts[1].offset = rootfs_offset; + parts[1].size = rootfs_size; + + *pparts = parts; + return BRNIMAGE_NR_PARTS; +} + +static struct mtd_part_parser mtdsplit_brnimage_parser = { + .owner = THIS_MODULE, + .name = "brnimage-fw", + .parse_fn = mtdsplit_parse_brnimage, + .type = MTD_PARSER_TYPE_FIRMWARE, +}; + +static int __init mtdsplit_brnimage_init(void) +{ + register_mtd_parser(&mtdsplit_brnimage_parser); + + return 0; +} + +subsys_initcall(mtdsplit_brnimage_init); |