[U-Boot] [PATCH V4 1/6] imx8: support parsing i.MX8 Container file
Peng Fan
peng.fan at nxp.com
Thu Aug 22 07:42:33 UTC 2019
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 at 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 92b5c56acb..5f62b2826e 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 misc.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);
+}
--
2.16.4
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