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Diffstat (limited to '')
| -rw-r--r-- | firmware.c | 131 |
1 files changed, 0 insertions, 131 deletions
diff --git a/firmware.c b/firmware.c deleted file mode 100644 index 2e2469908..000000000 --- a/firmware.c +++ /dev/null @@ -1,131 +0,0 @@ -/* - * Copyright (C) 2008 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 "bootloader.h" -#include "common.h" -#include "firmware.h" -#include "roots.h" - -#include <errno.h> -#include <string.h> -#include <sys/reboot.h> - -static const char *update_type = NULL; -static const char *update_data = NULL; -static int update_length = 0; - -int remember_firmware_update(const char *type, const char *data, int length) { - if (update_type != NULL || update_data != NULL) { - LOGE("Multiple firmware images\n"); - return -1; - } - - update_type = type; - update_data = data; - update_length = length; - return 0; -} - -// Return true if there is a firmware update pending. -int firmware_update_pending() { - return update_data != NULL && update_length > 0; -} - -/* Bootloader / Recovery Flow - * - * On every boot, the bootloader will read the bootloader_message - * from flash and check the command field. The bootloader should - * deal with the command field not having a 0 terminator correctly - * (so as to not crash if the block is invalid or corrupt). - * - * The bootloader will have to publish the partition that contains - * the bootloader_message to the linux kernel so it can update it. - * - * if command == "boot-recovery" -> boot recovery.img - * else if command == "update-radio" -> update radio image (below) - * else if command == "update-hboot" -> update hboot image (below) - * else -> boot boot.img (normal boot) - * - * Radio/Hboot Update Flow - * 1. the bootloader will attempt to load and validate the header - * 2. if the header is invalid, status="invalid-update", goto #8 - * 3. display the busy image on-screen - * 4. if the update image is invalid, status="invalid-radio-image", goto #8 - * 5. attempt to update the firmware (depending on the command) - * 6. if successful, status="okay", goto #8 - * 7. if failed, and the old image can still boot, status="failed-update" - * 8. write the bootloader_message, leaving the recovery field - * unchanged, updating status, and setting command to - * "boot-recovery" - * 9. reboot - * - * The bootloader will not modify or erase the cache partition. - * It is recovery's responsibility to clean up the mess afterwards. - */ - -int maybe_install_firmware_update(const char *send_intent) { - if (update_data == NULL || update_length == 0) return 0; - - /* We destroy the cache partition to pass the update image to the - * bootloader, so all we can really do afterwards is wipe cache and reboot. - * Set up this instruction now, in case we're interrupted while writing. - */ - - struct bootloader_message boot; - memset(&boot, 0, sizeof(boot)); - strlcpy(boot.command, "boot-recovery", sizeof(boot.command)); - strlcpy(boot.recovery, "recovery\n--wipe_cache\n", sizeof(boot.command)); - if (send_intent != NULL) { - strlcat(boot.recovery, "--send_intent=", sizeof(boot.recovery)); - strlcat(boot.recovery, send_intent, sizeof(boot.recovery)); - strlcat(boot.recovery, "\n", sizeof(boot.recovery)); - } - if (set_bootloader_message(&boot)) return -1; - - int width = 0, height = 0, bpp = 0; - char *busy_image = NULL;/*ui_copy_image( - BACKGROUND_ICON_FIRMWARE_INSTALLING, &width, &height, &bpp);*/ - char *fail_image = NULL;/*ui_copy_image( - BACKGROUND_ICON_FIRMWARE_ERROR, &width, &height, &bpp);*/ - - ui_print("Writing %s image...\n", update_type); - if (write_update_for_bootloader( - update_data, update_length, - width, height, bpp, busy_image, fail_image)) { - LOGE("Can't write %s image\n(%s)\n", update_type, strerror(errno)); - format_volume("/cache"); // Attempt to clean cache up, at least. - return -1; - } - - free(busy_image); - free(fail_image); - - /* The update image is fully written, so now we can instruct the bootloader - * to install it. (After doing so, it will come back here, and we will - * wipe the cache and reboot into the system.) - */ - snprintf(boot.command, sizeof(boot.command), "update-%s", update_type); - if (set_bootloader_message(&boot)) { - format_volume("/cache"); - return -1; - } - - reboot(RB_AUTOBOOT); - - // Can't reboot? WTF? - LOGE("Can't reboot\n"); - return -1; -} |