b36934bf5f
Support v3 header format when changing the command line with fastboot boot or using flash:raw. Bug: 151750405 Test: fastboot boot and flash:raw with updated cmdline and v3 header Merged-In: Ibf396e2d18d8b22cad50db290f3fd4e46ff85d9b Change-Id: Ibf396e2d18d8b22cad50db290f3fd4e46ff85d9b
126 lines
5.2 KiB
C++
126 lines
5.2 KiB
C++
/*
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* Copyright (C) 2008 The Android Open Source Project
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include "bootimg_utils.h"
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#include "util.h"
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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static void bootimg_set_cmdline_v3(boot_img_hdr_v3* h, const std::string& cmdline) {
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if (cmdline.size() >= sizeof(h->cmdline)) die("command line too large: %zu", cmdline.size());
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strcpy(reinterpret_cast<char*>(h->cmdline), cmdline.c_str());
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}
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void bootimg_set_cmdline(boot_img_hdr_v2* h, const std::string& cmdline) {
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if (h->header_version == 3) {
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return bootimg_set_cmdline_v3(reinterpret_cast<boot_img_hdr_v3*>(h), cmdline);
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}
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if (cmdline.size() >= sizeof(h->cmdline)) die("command line too large: %zu", cmdline.size());
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strcpy(reinterpret_cast<char*>(h->cmdline), cmdline.c_str());
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}
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static boot_img_hdr_v3* mkbootimg_v3(const std::vector<char>& kernel,
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const std::vector<char>& ramdisk, const boot_img_hdr_v2& src,
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std::vector<char>* out) {
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#define V3_PAGE_SIZE 4096
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const size_t page_mask = V3_PAGE_SIZE - 1;
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int64_t kernel_actual = (kernel.size() + page_mask) & (~page_mask);
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int64_t ramdisk_actual = (ramdisk.size() + page_mask) & (~page_mask);
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int64_t bootimg_size = V3_PAGE_SIZE + kernel_actual + ramdisk_actual;
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out->resize(bootimg_size);
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boot_img_hdr_v3* hdr = reinterpret_cast<boot_img_hdr_v3*>(out->data());
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memcpy(hdr->magic, BOOT_MAGIC, BOOT_MAGIC_SIZE);
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hdr->kernel_size = kernel.size();
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hdr->ramdisk_size = ramdisk.size();
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hdr->os_version = src.os_version;
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hdr->header_size = sizeof(boot_img_hdr_v3);
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hdr->header_version = 3;
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memcpy(hdr->magic + V3_PAGE_SIZE, kernel.data(), kernel.size());
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memcpy(hdr->magic + V3_PAGE_SIZE + kernel_actual, ramdisk.data(), ramdisk.size());
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return hdr;
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}
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boot_img_hdr_v2* mkbootimg(const std::vector<char>& kernel, const std::vector<char>& ramdisk,
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const std::vector<char>& second, const std::vector<char>& dtb,
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size_t base, const boot_img_hdr_v2& src, std::vector<char>* out) {
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if (src.header_version == 3) {
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if (!second.empty() || !dtb.empty()) {
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die("Second stage bootloader and dtb not supported in v3 boot image\n");
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}
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return reinterpret_cast<boot_img_hdr_v2*>(mkbootimg_v3(kernel, ramdisk, src, out));
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}
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const size_t page_mask = src.page_size - 1;
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int64_t header_actual = (sizeof(boot_img_hdr_v1) + page_mask) & (~page_mask);
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int64_t kernel_actual = (kernel.size() + page_mask) & (~page_mask);
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int64_t ramdisk_actual = (ramdisk.size() + page_mask) & (~page_mask);
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int64_t second_actual = (second.size() + page_mask) & (~page_mask);
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int64_t dtb_actual = (dtb.size() + page_mask) & (~page_mask);
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int64_t bootimg_size =
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header_actual + kernel_actual + ramdisk_actual + second_actual + dtb_actual;
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out->resize(bootimg_size);
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boot_img_hdr_v2* hdr = reinterpret_cast<boot_img_hdr_v2*>(out->data());
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*hdr = src;
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memcpy(hdr->magic, BOOT_MAGIC, BOOT_MAGIC_SIZE);
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hdr->kernel_size = kernel.size();
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hdr->ramdisk_size = ramdisk.size();
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hdr->second_size = second.size();
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hdr->kernel_addr += base;
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hdr->ramdisk_addr += base;
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hdr->second_addr += base;
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hdr->tags_addr += base;
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if (hdr->header_version == 1) {
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hdr->header_size = sizeof(boot_img_hdr_v1);
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} else if (hdr->header_version == 2) {
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hdr->header_size = sizeof(boot_img_hdr_v2);
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hdr->dtb_size = dtb.size();
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hdr->dtb_addr += base;
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}
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memcpy(hdr->magic + hdr->page_size, kernel.data(), kernel.size());
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memcpy(hdr->magic + hdr->page_size + kernel_actual, ramdisk.data(), ramdisk.size());
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memcpy(hdr->magic + hdr->page_size + kernel_actual + ramdisk_actual, second.data(),
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second.size());
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memcpy(hdr->magic + hdr->page_size + kernel_actual + ramdisk_actual + second_actual, dtb.data(),
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dtb.size());
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return hdr;
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}
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