Add parsing i.MX8 Container file support, this is to let SPL could load images in a container file to destination address.
Signed-off-by: Peng Fan peng.fan@nxp.com --- arch/arm/include/asm/arch-imx8/image.h | 56 +++++++++++++++ arch/arm/mach-imx/imx8/Kconfig | 6 ++ arch/arm/mach-imx/imx8/Makefile | 4 ++ arch/arm/mach-imx/imx8/parse-container.c | 120 +++++++++++++++++++++++++++++++ 4 files changed, 186 insertions(+) create mode 100644 arch/arm/include/asm/arch-imx8/image.h create mode 100644 arch/arm/mach-imx/imx8/parse-container.c
diff --git a/arch/arm/include/asm/arch-imx8/image.h b/arch/arm/include/asm/arch-imx8/image.h new file mode 100644 index 0000000000..c1e5700859 --- /dev/null +++ b/arch/arm/include/asm/arch-imx8/image.h @@ -0,0 +1,56 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ +/* + * Copyright 2018-2019 NXP + */ + +#ifndef __CONTAINER_HEADER_H_ +#define __CONTAINER_HEADER_H_ + +#include <linux/sizes.h> +#include <linux/types.h> + +#define IV_MAX_LEN 32 +#define HASH_MAX_LEN 64 + +#define CONTAINER_HDR_ALIGNMENT 0x400 +#define CONTAINER_HDR_EMMC_OFFSET 0 +#define CONTAINER_HDR_MMCSD_OFFSET SZ_32K +#define CONTAINER_HDR_QSPI_OFFSET SZ_4K +#define CONTAINER_HDR_NAND_OFFSET SZ_128M + +struct container_hdr { + u8 version; + u8 length_lsb; + u8 length_msb; + u8 tag; + u32 flags; + u16 sw_version; + u8 fuse_version; + u8 num_images; + u16 sig_blk_offset; + u16 reserved; +} __packed; + +struct boot_img_t { + u32 offset; + u32 size; + u64 dst; + u64 entry; + u32 hab_flags; + u32 meta; + u8 hash[HASH_MAX_LEN]; + u8 iv[IV_MAX_LEN]; +} __packed; + +struct signature_block_hdr { + u8 version; + u8 length_lsb; + u8 length_msb; + u8 tag; + u16 srk_table_offset; + u16 cert_offset; + u16 blob_offset; + u16 signature_offset; + u32 reserved; +} __packed; +#endif diff --git a/arch/arm/mach-imx/imx8/Kconfig b/arch/arm/mach-imx/imx8/Kconfig index bbe323d5ca..e9496cb611 100644 --- a/arch/arm/mach-imx/imx8/Kconfig +++ b/arch/arm/mach-imx/imx8/Kconfig @@ -23,6 +23,12 @@ config IMX8QXP config SYS_SOC default "imx8"
+config SPL_LOAD_IMX_CONTAINER + bool "Enable SPL loading U-Boot as a i.MX Container image" + depends on SPL + help + This is to let SPL could load i.MX8 Container image + choice prompt "i.MX8 board select" optional diff --git a/arch/arm/mach-imx/imx8/Makefile b/arch/arm/mach-imx/imx8/Makefile index 31ad169ccf..19690110a5 100644 --- a/arch/arm/mach-imx/imx8/Makefile +++ b/arch/arm/mach-imx/imx8/Makefile @@ -5,3 +5,7 @@ #
obj-y += cpu.o iomux.o + +ifdef CONFIG_SPL_BUILD +obj-$(CONFIG_SPL_LOAD_IMX_CONTAINER) += parse-container.o +endif diff --git a/arch/arm/mach-imx/imx8/parse-container.c b/arch/arm/mach-imx/imx8/parse-container.c new file mode 100644 index 0000000000..32f78bdddf --- /dev/null +++ b/arch/arm/mach-imx/imx8/parse-container.c @@ -0,0 +1,120 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright 2018-2019 NXP + */ + +#include <common.h> +#include <errno.h> +#include <spl.h> +#include <asm/arch/image.h> + +static struct boot_img_t *read_auth_image(struct spl_image_info *spl_image, + struct spl_load_info *info, + struct container_hdr *container, + int image_index, + u32 container_sector) +{ + struct boot_img_t *images; + ulong sector; + u32 sectors; + + if (image_index > container->num_images) { + debug("Invalid image number\n"); + return NULL; + } + + images = (struct boot_img_t *)((u8 *)container + + sizeof(struct container_hdr)); + + if (images[image_index].offset % info->bl_len) { + printf("%s: image%d offset not aligned to %u\n", + __func__, image_index, info->bl_len); + return NULL; + } + + sectors = roundup(images[image_index].size, info->bl_len) / + info->bl_len; + sector = images[image_index].offset / info->bl_len + + container_sector; + + debug("%s: container: %p sector: %lu sectors: %u\n", __func__, + container, sector, sectors); + if (info->read(info, sector, sectors, + (void *)images[image_index].entry) != sectors) { + printf("%s wrong\n", __func__); + return NULL; + } + + return &images[image_index]; +} + +static int read_auth_container(struct spl_image_info *spl_image, + struct spl_load_info *info, ulong sector) +{ + struct container_hdr *container = NULL; + u16 length; + u32 sectors; + int i, size; + + size = roundup(CONTAINER_HDR_ALIGNMENT, info->bl_len); + sectors = size / info->bl_len; + + /* + * It will not override the ATF code, so safe to use it here, + * no need malloc + */ + container = (struct container_hdr *)spl_get_load_buffer(-size, size); + + debug("%s: container: %p sector: %lu sectors: %u\n", __func__, + container, sector, sectors); + if (info->read(info, sector, sectors, container) != sectors) + return -EIO; + + if (container->tag != 0x87 && container->version != 0x0) { + printf("Wrong container header"); + return -ENOENT; + } + + if (!container->num_images) { + printf("Wrong container, no image found"); + return -ENOENT; + } + + length = container->length_lsb + (container->length_msb << 8); + debug("Container length %u\n", length); + + if (length > CONTAINER_HDR_ALIGNMENT) { + size = roundup(length, info->bl_len); + sectors = size / info->bl_len; + + container = (struct container_hdr *)spl_get_load_buffer(-size, size); + + debug("%s: container: %p sector: %lu sectors: %u\n", + __func__, container, sector, sectors); + if (info->read(info, sector, sectors, container) != + sectors) + return -EIO; + } + + for (i = 0; i < container->num_images; i++) { + struct boot_img_t *image = read_auth_image(spl_image, info, + container, i, + sector); + + if (!image) + return -EINVAL; + + if (i == 0) { + spl_image->load_addr = image->dst; + spl_image->entry_point = image->entry; + } + } + + return 0; +} + +int spl_load_imx_container(struct spl_image_info *spl_image, + struct spl_load_info *info, ulong sector) +{ + return read_auth_container(spl_image, info, sector); +}