Merge "Add fastboot --os-version and --os-patch-level." (09f2af48) · Commits · e / os / android_system_core

fastboot/bootimg_utils.cpp

+17 −22

Original line number	Diff line number	Diff line
		@@ -34,16 +34,15 @@
		#include <stdlib.h>
		#include <string.h>

		void bootimg_set_cmdline(boot_img_hdr_v1* h, const char* cmdline) {
		if (strlen(cmdline) >= sizeof(h->cmdline)) die("command line too large: %zu", strlen(cmdline));
		strcpy(reinterpret_cast<char*>(h->cmdline), cmdline);
		void bootimg_set_cmdline(boot_img_hdr_v1* h, const std::string& cmdline) {
		if (cmdline.size() >= sizeof(h->cmdline)) die("command line too large: %zu", cmdline.size());
		strcpy(reinterpret_cast<char*>(h->cmdline), cmdline.c_str());
		}

		boot_img_hdr_v1* mkbootimg(void* kernel, int64_t kernel_size, off_t kernel_offset, void* ramdisk,
		int64_t ramdisk_size, off_t ramdisk_offset, void* second,
		int64_t second_size, off_t second_offset, size_t page_size, size_t base,
		off_t tags_offset, uint32_t header_version, int64_t* bootimg_size) {
		size_t page_mask = page_size - 1;
		boot_img_hdr_v1* mkbootimg(void* kernel, int64_t kernel_size, void* ramdisk, int64_t ramdisk_size,
		void* second, int64_t second_size, size_t base,
		const boot_img_hdr_v1& src, int64_t* bootimg_size) {
		const size_t page_mask = src.page_size - 1;

		int64_t header_actual = sizeof(boot_img_hdr_v1) & (~page_mask);
		int64_t kernel_actual = (kernel_size + page_mask) & (~page_mask);
		@@ -53,30 +52,26 @@ boot_img_hdr_v1* mkbootimg(void* kernel, int64_t kernel_size, off_t kernel_offse
		*bootimg_size = header_actual + kernel_actual + ramdisk_actual + second_actual;

		boot_img_hdr_v1* hdr = reinterpret_cast<boot_img_hdr_v1>(calloc(bootimg_size, 1));
		if (hdr == nullptr) {
		return hdr;
		}
		if (hdr == nullptr) die("couldn't allocate boot image: %" PRId64 " bytes", *bootimg_size);

		*hdr = src;
		memcpy(hdr->magic, BOOT_MAGIC, BOOT_MAGIC_SIZE);

		hdr->kernel_size = kernel_size;
		hdr->ramdisk_size = ramdisk_size;
		hdr->second_size = second_size;

		hdr->kernel_addr = base + kernel_offset;
		hdr->ramdisk_addr = base + ramdisk_offset;
		hdr->second_addr = base + second_offset;
		hdr->tags_addr = base + tags_offset;

		hdr->page_size = page_size;
		hdr->kernel_addr += base;
		hdr->ramdisk_addr += base;
		hdr->second_addr += base;
		hdr->tags_addr += base;

		if (header_version) {
		hdr->header_version = header_version;
		if (hdr->header_version != 0) {
		hdr->header_size = sizeof(boot_img_hdr_v1);
		}

		memcpy(hdr->magic + page_size, kernel, kernel_size);
		memcpy(hdr->magic + page_size + kernel_actual, ramdisk, ramdisk_size);
		memcpy(hdr->magic + page_size + kernel_actual + ramdisk_actual, second, second_size);
		memcpy(hdr->magic + hdr->page_size, kernel, kernel_size);
		memcpy(hdr->magic + hdr->page_size + kernel_actual, ramdisk, ramdisk_size);
		memcpy(hdr->magic + hdr->page_size + kernel_actual + ramdisk_actual, second, second_size);
		return hdr;
		}

fastboot/bootimg_utils.h

+6 −8

Original line number	Diff line number	Diff line
		@@ -26,17 +26,15 @@
		* SUCH DAMAGE.
		*/

		#ifndef _FASTBOOT_BOOTIMG_UTILS_H_
		#define _FASTBOOT_BOOTIMG_UTILS_H_
		#pragma once

		#include <bootimg.h>
		#include <inttypes.h>
		#include <sys/types.h>

		void bootimg_set_cmdline(boot_img_hdr_v1* h, const char* cmdline);
		boot_img_hdr_v1* mkbootimg(void* kernel, int64_t kernel_size, off_t kernel_offset, void* ramdisk,
		int64_t ramdisk_size, off_t ramdisk_offset, void* second,
		int64_t second_size, off_t second_offset, size_t page_size, size_t base,
		off_t tags_offset, uint32_t header_version, int64_t* bootimg_size);
		#include <string>

		#endif
		boot_img_hdr_v1* mkbootimg(void* kernel, int64_t kernel_size, void* ramdisk, int64_t ramdisk_size,
		void* second, int64_t second_size, size_t base,
		const boot_img_hdr_v1& src, int64_t* bootimg_size);
		void bootimg_set_cmdline(boot_img_hdr_v1* h, const std::string& cmdline);

fastboot/fastboot.cpp

+134 −123

Original line number	Diff line number	Diff line
		@@ -76,9 +76,9 @@ using android::base::unique_fd;
		char cur_product[FB_RESPONSE_SZ + 1];

		static const char* serial = nullptr;
		static const char* cmdline = nullptr;

		static unsigned short vendor_id = 0;
		static int long_listing = 0;
		static bool g_long_listing = false;
		// Don't resparse files in too-big chunks.
		// libsparse will support INT_MAX, but this results in large allocations, so
		// let's keep it at 1GB to avoid memory pressure on the host.
		@@ -86,12 +86,9 @@ static constexpr int64_t RESPARSE_LIMIT = 1 * 1024 * 1024 * 1024;
		static int64_t sparse_limit = -1;
		static int64_t target_sparse_limit = -1;

		static unsigned page_size = 2048;
		static unsigned base_addr = 0x10000000;
		static unsigned kernel_offset = 0x00008000;
		static unsigned ramdisk_offset = 0x01000000;
		static unsigned second_offset = 0x00f00000;
		static unsigned tags_offset = 0x00000100;
		static unsigned g_base_addr = 0x10000000;
		static boot_img_hdr_v1 g_boot_img_hdr = {};
		static std::string g_cmdline;

		static bool g_disable_verity = false;
		static bool g_disable_verification = false;
		@@ -223,7 +220,7 @@ static int list_devices_callback(usb_ifc_info* info) {
		serial = "????????????";
		}
		// output compatible with "adb devices"
		if (!long_listing) {
		if (!g_long_listing) {
		printf("%s\tfastboot", serial.c_str());
		} else {
		printf("%-22s fastboot", serial.c_str());
		@@ -360,14 +357,18 @@ static int show_help() {
		" Download and boot kernel from RAM.\n"
		" flash:raw PARTITION KERNEL [RAMDISK [SECOND]]\n"
		" Create boot image and flash it.\n"
		// TODO: give -c a long option, and remove the short options for this group?
		" -c CMDLINE Override kernel command line.\n"
		" --cmdline CMDLINE Override kernel command line.\n"
		" --base ADDRESS Set kernel base address (default: 0x10000000).\n"
		" --kernel-offset Set kernel offset (default: 0x00008000).\n"
		" --ramdisk-offset Set ramdisk offset (default: 0x01000000).\n"
		" --tags-offset Set tags offset (default: 0x00000100).\n"
		" --page-size BYTES Set flash page size (default: 2048).\n"
		" --header-version VERSION Set boot image header version.\n"
		" --os-version MAJOR[.MINOR[.PATCH]]\n"
		" Set boot image OS version (default: 0.0.0).\n"
		" --os-patch-level YYYY-MM-DD\n"
		" Set boot image OS security patch level.\n"
		// TODO: still missing: `second_addr`, `name`, `id`, `recovery_dtbo_*`.
		"\n"
		// TODO: what device(s) used this? is there any documentation?
		//" continue Continue with autoboot.\n"
		@@ -404,8 +405,7 @@ static int show_help() {
		}

		static void* load_bootable_image(const std::string& kernel, const std::string& ramdisk,
		const std::string& second_stage, int64_t* sz,
		const char* cmdline, uint32_t header_version) {
		const std::string& second_stage, int64_t* sz) {
		int64_t ksize;
		void* kdata = load_file(kernel.c_str(), &ksize);
		if (kdata == nullptr) die("cannot load '%s': %s", kernel.c_str(), strerror(errno));
		@@ -415,12 +415,14 @@ static void* load_bootable_image(const std::string& kernel, const std::string& r
		die("cannot load '%s': too short", kernel.c_str());
		}
		if (!memcmp(kdata, BOOT_MAGIC, BOOT_MAGIC_SIZE)) {
		if (cmdline) bootimg_set_cmdline(reinterpret_cast<boot_img_hdr_v1*>(kdata), cmdline);
		if (!g_cmdline.empty()) {
		bootimg_set_cmdline(reinterpret_cast<boot_img_hdr_v1*>(kdata), g_cmdline);
		}
		uint32_t header_version_existing =
		reinterpret_cast<boot_img_hdr_v1*>(kdata)->header_version;
		if (header_version != header_version_existing) {
		if (g_boot_img_hdr.header_version != header_version_existing) {
		die("header version mismatch, expected: %" PRIu32 " found %" PRIu32 "",
		header_version, header_version_existing);
		g_boot_img_hdr.header_version, header_version_existing);
		}

		if (!ramdisk.empty()) die("cannot boot a boot.img and ramdisk");
		@@ -444,16 +446,12 @@ static void* load_bootable_image(const std::string& kernel, const std::string& r
		}

		fprintf(stderr,"creating boot image...\n");
		int64_t bsize = 0;
		boot_img_hdr_v1* bdata = mkbootimg(kdata, ksize, kernel_offset,
		rdata, rsize, ramdisk_offset,
		sdata, ssize, second_offset,
		page_size, base_addr, tags_offset, header_version, &bsize);
		boot_img_hdr_v1* bdata = mkbootimg(kdata, ksize, rdata, rsize, sdata, ssize,
		g_base_addr, g_boot_img_hdr, sz);
		if (bdata == nullptr) die("failed to create boot.img");

		if (cmdline) bootimg_set_cmdline(bdata, cmdline);
		fprintf(stderr, "creating boot image - %" PRId64 " bytes\n", bsize);
		*sz = bsize;
		if (!g_cmdline.empty()) bootimg_set_cmdline(bdata, g_cmdline);
		fprintf(stderr, "creating boot image - %" PRId64 " bytes\n", *sz);

		return bdata;
		}
		@@ -1422,34 +1420,37 @@ int main(int argc, char **argv)
		bool skip_secondary = false;
		bool set_fbe_marker = false;
		void *data;
		uint32_t header_version = 0;
		int64_t sz;
		int longindex;
		std::string slot_override;
		std::string next_active;

		g_boot_img_hdr.kernel_addr = 0x00008000;
		g_boot_img_hdr.ramdisk_addr = 0x01000000;
		g_boot_img_hdr.second_addr = 0x00f00000;
		g_boot_img_hdr.tags_addr = 0x00000100;
		g_boot_img_hdr.page_size = 2048;

		const struct option longopts[] = {
		{"base", required_argument, 0, 'b'},
		{"kernel_offset", required_argument, 0, 'k'},
		{"kernel-offset", required_argument, 0, 'k'},
		{"page_size", required_argument, 0, 'n'},
		{"page-size", required_argument, 0, 'n'},
		{"ramdisk_offset", required_argument, 0, 'r'},
		{"ramdisk-offset", required_argument, 0, 'r'},
		{"tags_offset", required_argument, 0, 't'},
		{"tags-offset", required_argument, 0, 't'},
		{"base", required_argument, 0, 0},
		{"cmdline", required_argument, 0, 0},
		{"disable-verification", no_argument, 0, 0},
		{"disable-verity", no_argument, 0, 0},
		{"header-version", required_argument, 0, 0},
		{"help", no_argument, 0, 'h'},
		{"unbuffered", no_argument, 0, 0},
		{"slot", required_argument, 0, 0},
		{"set_active", optional_argument, 0, 'a'},
		{"kernel-offset", required_argument, 0, 0},
		{"os-patch-level", required_argument, 0, 0},
		{"os-version", required_argument, 0, 0},
		{"page-size", required_argument, 0, 0},
		{"ramdisk-offset", required_argument, 0, 0},
		{"set-active", optional_argument, 0, 'a'},
		{"skip-secondary", no_argument, 0, 0},
		{"skip-reboot", no_argument, 0, 0},
		{"skip-secondary", no_argument, 0, 0},
		{"slot", required_argument, 0, 0},
		{"tags-offset", required_argument, 0, 0},
		{"unbuffered", no_argument, 0, 0},
		{"verbose", no_argument, 0, 'v'},
		{"version", no_argument, 0, 0},
		{"disable-verity", no_argument, 0, 0},
		{"disable-verification", no_argument, 0, 0},
		{"header-version", required_argument, 0, 0},
		#if !defined(_WIN32)
		{"wipe-and-use-fbe", no_argument, 0, 0},
		#endif
		@@ -1458,51 +1459,89 @@ int main(int argc, char **argv)

		serial = getenv("ANDROID_SERIAL");

		while (1) {
		int c = getopt_long(argc, argv, "vwb:k:n:r:t:s:S:lc:i:m:ha::", longopts, &longindex);
		if (c < 0) {
		break;
		int c;
		while ((c = getopt_long(argc, argv, "a::hi:ls:S:vw", longopts, &longindex)) != -1) {
		if (c == 0) {
		std::string name{longopts[longindex].name};
		if (name == "base") {
		g_base_addr = strtoul(optarg, 0, 16);
		} else if (name == "cmdline") {
		g_cmdline = optarg;
		} else if (name == "disable-verification") {
		g_disable_verification = true;
		} else if (name == "disable-verity") {
		g_disable_verity = true;
		} else if (name == "header-version") {
		g_boot_img_hdr.header_version = strtoul(optarg, nullptr, 0);
		} else if (name == "kernel-offset") {
		g_boot_img_hdr.kernel_addr = strtoul(optarg, 0, 16);
		} else if (name == "os-patch-level") {
		unsigned year, month, day;
		if (sscanf(optarg, "%u-%u-%u", &year, &month, &day) != 3) {
		syntax_error("OS patch level should be YYYY-MM-DD: %s", optarg);
		}
		if (year < 2000 \|\| year >= 2128) syntax_error("year out of range: %d", year);
		if (month < 1 \|\| month > 12) syntax_error("month out of range: %d", month);
		g_boot_img_hdr.SetOsPatchLevel(year, month);
		} else if (name == "os-version") {
		unsigned major = 0, minor = 0, patch = 0;
		std::vector<std::string> versions = android::base::Split(optarg, ".");
		if (versions.size() < 1 \|\| versions.size() > 3 \|\|
		(versions.size() >= 1 && !android::base::ParseUint(versions[0], &major)) \|\|
		(versions.size() >= 2 && !android::base::ParseUint(versions[1], &minor)) \|\|
		(versions.size() == 3 && !android::base::ParseUint(versions[2], &patch)) \|\|
		(major > 0x7f \|\| minor > 0x7f \|\| patch > 0x7f)) {
		syntax_error("bad OS version: %s", optarg);
		}
		g_boot_img_hdr.SetOsVersion(major, minor, patch);
		} else if (name == "page-size") {
		g_boot_img_hdr.page_size = strtoul(optarg, nullptr, 0);
		if (g_boot_img_hdr.page_size == 0) die("invalid page size");
		} else if (name == "ramdisk-offset") {
		g_boot_img_hdr.ramdisk_addr = strtoul(optarg, 0, 16);
		} else if (name == "skip-reboot") {
		skip_reboot = true;
		} else if (name == "skip-secondary") {
		skip_secondary = true;
		} else if (name == "slot") {
		slot_override = optarg;
		} else if (name == "tags-offset") {
		g_boot_img_hdr.tags_addr = strtoul(optarg, 0, 16);
		} else if (name == "unbuffered") {
		setvbuf(stdout, nullptr, _IONBF, 0);
		setvbuf(stderr, nullptr, _IONBF, 0);
		} else if (name == "version") {
		fprintf(stdout, "fastboot version %s\n", FASTBOOT_VERSION);
		fprintf(stdout, "Installed as %s\n", android::base::GetExecutablePath().c_str());
		return 0;
		#if !defined(_WIN32)
		} else if (name == "wipe-and-use-fbe") {
		wants_wipe = true;
		set_fbe_marker = true;
		#endif
		} else {
		die("unknown option %s", longopts[longindex].name);
		}
		/* Alphabetical cases */
		} else {
		switch (c) {
		case 'a':
		wants_set_active = true;
		if (optarg)
		next_active = optarg;
		break;
		case 'b':
		base_addr = strtoul(optarg, 0, 16);
		break;
		case 'c':
		cmdline = optarg;
		if (optarg) next_active = optarg;
		break;
		case 'h':
		return show_help();
		case 'i': {
		case 'i':
		{
		char *endptr = nullptr;
		unsigned long val;

		val = strtoul(optarg, &endptr, 0);
		if (!endptr \|\| *endptr != '\0' \|\| (val & ~0xffff))
		unsigned long val = strtoul(optarg, &endptr, 0);
		if (!endptr \|\| *endptr != '\0' \|\| (val & ~0xffff)) {
		die("invalid vendor id '%s'", optarg);
		}
		vendor_id = (unsigned short)val;
		break;
		}
		case 'k':
		kernel_offset = strtoul(optarg, 0, 16);
		break;
		case 'l':
		long_listing = 1;
		break;
		case 'n':
		page_size = (unsigned)strtoul(optarg, nullptr, 0);
		if (!page_size) die("invalid page size");
		break;
		case 'r':
		ramdisk_offset = strtoul(optarg, 0, 16);
		break;
		case 't':
		tags_offset = strtoul(optarg, 0, 16);
		g_long_listing = true;
		break;
		case 's':
		serial = optarg;
		@@ -1519,39 +1558,11 @@ int main(int argc, char **argv)
		break;
		case '?':
		return 1;
		case 0:
		if (strcmp("unbuffered", longopts[longindex].name) == 0) {
		setvbuf(stdout, nullptr, _IONBF, 0);
		setvbuf(stderr, nullptr, _IONBF, 0);
		} else if (strcmp("version", longopts[longindex].name) == 0) {
		fprintf(stdout, "fastboot version %s\n", FASTBOOT_VERSION);
		fprintf(stdout, "Installed as %s\n", android::base::GetExecutablePath().c_str());
		return 0;
		} else if (strcmp("slot", longopts[longindex].name) == 0) {
		slot_override = std::string(optarg);
		} else if (strcmp("skip-secondary", longopts[longindex].name) == 0 ) {
		skip_secondary = true;
		} else if (strcmp("skip-reboot", longopts[longindex].name) == 0 ) {
		skip_reboot = true;
		} else if (strcmp("disable-verity", longopts[longindex].name) == 0 ) {
		g_disable_verity = true;
		} else if (strcmp("disable-verification", longopts[longindex].name) == 0 ) {
		g_disable_verification = true;
		#if !defined(_WIN32)
		} else if (strcmp("wipe-and-use-fbe", longopts[longindex].name) == 0) {
		wants_wipe = true;
		set_fbe_marker = true;
		#endif
		} else if (strcmp("header-version", longopts[longindex].name) == 0) {
		header_version = strtoul(optarg, nullptr, 0);
		} else {
		die("unknown option %s", longopts[longindex].name);
		}
		break;
		default:
		abort();
		}
		}
		}

		argc -= optind;
		argv += optind;
		@@ -1668,7 +1679,7 @@ int main(int argc, char **argv)
		std::string second_stage;
		if (!args.empty()) second_stage = next_arg(&args);

		data = load_bootable_image(kernel, ramdisk, second_stage, &sz, cmdline, header_version);
		data = load_bootable_image(kernel, ramdisk, second_stage, &sz);
		fb_queue_download("boot.img", data, sz);
		fb_queue_command("boot", "booting");
		} else if (command == "flash") {
		@@ -1694,7 +1705,7 @@ int main(int argc, char **argv)
		std::string second_stage;
		if (!args.empty()) second_stage = next_arg(&args);

		data = load_bootable_image(kernel, ramdisk, second_stage, &sz, cmdline, header_version);
		data = load_bootable_image(kernel, ramdisk, second_stage, &sz);
		auto flashraw = [&](const std::string& partition) {
		fb_queue_flash(partition, data, sz);
		};

mkbootimg/include/bootimg/bootimg.h

+42 −58

Original line number	Diff line number	Diff line
		/* tools/mkbootimg/bootimg.h
		**
		** Copyright 2007, The Android Open Source Project
		**
		** Licensed under the Apache License, Version 2.0 (the "License");
		** you may not use this file except in compliance with the License.
		** You may obtain a copy of the License at
		**
		** http://www.apache.org/licenses/LICENSE-2.0
		**
		** Unless required by applicable law or agreed to in writing, software
		** distributed under the License is distributed on an "AS IS" BASIS,
		** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
		** See the License for the specific language governing permissions and
		** limitations under the License.
		/*
		* Copyright (C) 2007 The Android Open Source Project
		*
		* Licensed under the Apache License, Version 2.0 (the "License");
		* you may not use this file except in compliance with the License.
		* You may obtain a copy of the License at
		*
		* http://www.apache.org/licenses/LICENSE-2.0
		*
		* Unless required by applicable law or agreed to in writing, software
		* distributed under the License is distributed on an "AS IS" BASIS,
		* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
		* See the License for the specific language governing permissions and
		* limitations under the License.
		*/

		#include <stdint.h>
		#pragma once

		#ifndef _BOOT_IMAGE_H_
		#define _BOOT_IMAGE_H_
		#include <stdint.h>

		#define BOOT_MAGIC "ANDROID!"
		#define BOOT_MAGIC_SIZE 8
		@@ -26,12 +24,10 @@
		#define BOOT_ARGS_SIZE 512
		#define BOOT_EXTRA_ARGS_SIZE 1024

		#define BOOT_HEADER_VERSION_ZERO 0
		/*
		* Bootloader expects the structure of boot_img_hdr with header version
		* BOOT_HEADER_VERSION_ZERO to be as follows:
		*/
		// The bootloader expects the structure of boot_img_hdr with header
		// version 0 to be as follows:
		struct boot_img_hdr_v0 {
		// Must be BOOT_MAGIC.
		uint8_t magic[BOOT_MAGIC_SIZE];

		uint32_t kernel_size; /* size in bytes */
		@@ -45,26 +41,36 @@ struct boot_img_hdr_v0 {

		uint32_t tags_addr; /* physical addr for kernel tags */
		uint32_t page_size; /* flash page size we assume */
		/*
		* version for the boot image header.
		*/

		// Version of the boot image header.
		uint32_t header_version;

		/* operating system version and security patch level; for
		* version "A.B.C" and patch level "Y-M-D":
		* ver = A << 14 \| B << 7 \| C (7 bits for each of A, B, C)
		* lvl = ((Y - 2000) & 127) << 4 \| M (7 bits for Y, 4 bits for M)
		* os_version = ver << 11 \| lvl */
		// Operating system version and security patch level.
		// For version "A.B.C" and patch level "Y-M-D":
		// (7 bits for each of A, B, C; 7 bits for (Y-2000), 4 bits for M)
		// os_version = A[31:25] B[24:18] C[17:11] (Y-2000)[10:4] M[3:0]
		uint32_t os_version;

		#if __cplusplus
		void SetOsVersion(unsigned major, unsigned minor, unsigned patch) {
		os_version &= ((1 << 11) - 1);
		os_version \|= (((major & 0x7f) << 25) \| ((minor & 0x7f) << 18) \| ((patch & 0x7f) << 11));
		}

		void SetOsPatchLevel(unsigned year, unsigned month) {
		os_version &= ~((1 << 11) - 1);
		os_version \|= (((year - 2000) & 0x7f) << 4) \| ((month & 0xf) << 0);
		}
		#endif

		uint8_t name[BOOT_NAME_SIZE]; /* asciiz product name */

		uint8_t cmdline[BOOT_ARGS_SIZE];

		uint32_t id[8]; /* timestamp / checksum / sha1 / etc */

		/* Supplemental command line data; kept here to maintain
		* binary compatibility with older versions of mkbootimg */
		// Supplemental command line data; kept here to maintain
		// binary compatibility with older versions of mkbootimg.
		uint8_t extra_cmdline[BOOT_EXTRA_ARGS_SIZE];
		} __attribute__((packed));

		@@ -74,7 +80,7 @@ struct boot_img_hdr_v0 {
		*/
		typedef struct boot_img_hdr_v0 boot_img_hdr;

		/* When a boot header is of version BOOT_HEADER_VERSION_ZERO, the structure of boot image is as
		/* When a boot header is of version 0, the structure of boot image is as
		* follows:
		*
		* +-----------------+
		@@ -103,15 +109,13 @@ typedef struct boot_img_hdr_v0 boot_img_hdr;
		* else: jump to kernel_addr
		*/

		#define BOOT_HEADER_VERSION_ONE 1

		struct boot_img_hdr_v1 : public boot_img_hdr_v0 {
		uint32_t recovery_dtbo_size; /* size in bytes for recovery DTBO image */
		uint64_t recovery_dtbo_offset; /* physical load addr */
		uint32_t header_size;
		} __attribute__((packed));

		/* When the boot image header has a version of BOOT_HEADER_VERSION_ONE, the structure of the boot
		/* When the boot image header has a version of 1, the structure of the boot
		* image is as follows:
		*
		* +-----------------+
		@@ -142,23 +146,3 @@ struct boot_img_hdr_v1 : public boot_img_hdr_v0 {
		* 7. if second_size != 0: jump to second_addr
		* else: jump to kernel_addr
		*/

		#if 0
		typedef struct ptentry ptentry;

		struct ptentry {
		char name[16]; /* asciiz partition name */
		unsigned start; /* starting block number */
		unsigned length; /* length in blocks */
		unsigned flags; /* set to zero */
		};

		/* MSM Partition Table ATAG
		**
		** length: 2 + 7 * n
		** atag: 0x4d534d70
		** <ptentry> x n
		*/
		#endif

		#endif