blob: b8bb48b0c14ff24ea679cead29b597a7997e5b57 [file] [log] [blame] [edit]
/* Copyright 2018 The Chromium OS Authors. All rights reserved.
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*
* A reference implementation for AP (and supporting images) firmware updater.
*/
#include <assert.h>
#include <ctype.h>
#include "2rsa.h"
#include "crossystem.h"
#include "futility.h"
#include "host_misc.h"
#include "updater.h"
#include "util_misc.h"
#define REMOVE_WP_URL "https://goo.gl/ces83U"
static const char ROOTKEY_HASH_DEV[] =
"b11d74edd286c144e1135b49e7f0bc20cf041f10";
enum target_type {
TARGET_SELF,
TARGET_UPDATE,
};
enum rootkey_compat_result {
ROOTKEY_COMPAT_OK,
ROOTKEY_COMPAT_ERROR,
ROOTKEY_COMPAT_REKEY,
ROOTKEY_COMPAT_REKEY_TO_DEV,
};
/*
* Gets the system property by given type.
* If the property was not loaded yet, invoke the property getter function
* and cache the result.
* Returns the property value.
*/
int get_system_property(enum system_property_type property_type,
struct updater_config *cfg)
{
struct system_property *prop;
assert(property_type < SYS_PROP_MAX);
prop = &cfg->system_properties[property_type];
if (!prop->initialized) {
prop->initialized = 1;
prop->value = prop->getter();
}
return prop->value;
}
static void print_system_properties(struct updater_config *cfg)
{
int i;
/*
* There may be error messages when fetching properties from active
* system, so we want to peek at them first and then print out.
*/
VB2_DEBUG("Scanning system properties...\n");
for (i = 0; i < SYS_PROP_MAX; i++) {
get_system_property((enum system_property_type)i, cfg);
}
printf("System properties: [");
for (i = 0; i < SYS_PROP_MAX; i++) {
printf("%d,",
get_system_property((enum system_property_type)i, cfg));
}
printf("]\n");
}
/*
* Overrides the return value of a system property.
* After invoked, next call to get_system_property(type, cfg) will return
* the given value.
*/
static void override_system_property(enum system_property_type property_type,
struct updater_config *cfg,
int value)
{
struct system_property *prop;
assert(property_type < SYS_PROP_MAX);
prop = &cfg->system_properties[property_type];
prop->initialized = 1;
prop->value = value;
}
/*
* Overrides system properties from a given list.
* The list should be string of integers eliminated by comma and/or space.
* For example, "1 2 3" and "1,2,3" both overrides first 3 properties.
* To skip some properties you have to use comma, for example
* "1, , 3" will only override the first and 3rd properties.
* Invalid characters and fields will be ignored.
*
* The current implementation is only for unit testing.
* In future we may extend this with name=value so users can use it easily on
* actual systems.
*/
static void override_properties_from_list(const char *override_list,
struct updater_config *cfg)
{
const char *s = override_list;
char *e, c;
int i = 0, wait_comma = 0;
long int v;
VB2_DEBUG("Input is <%s>\n", override_list);
for (c = *s; c; c = *++s) {
if (c == ',') {
if (!wait_comma)
i++;
wait_comma = 0;
}
if (!isascii(c) || !(isdigit(c) || c == '-'))
continue;
if (i >= SYS_PROP_MAX) {
ERROR("Too many fields (max is %d): %s.\n",
SYS_PROP_MAX, override_list);
return;
}
v = strtol(s, &e, 0);
s = e - 1;
VB2_DEBUG("property[%d].value = %ld\n", i, v);
override_system_property((enum system_property_type)i, cfg, v);
wait_comma = 1;
i++;
}
}
/* Gets the value (setting) of specified quirks from updater configuration. */
int get_config_quirk(enum quirk_types quirk, const struct updater_config *cfg)
{
assert(quirk < QUIRK_MAX);
return cfg->quirks[quirk].value;
}
/* Prints the name and description from all supported quirks. */
void updater_list_config_quirks(const struct updater_config *cfg)
{
const struct quirk_entry *entry = cfg->quirks;
int i;
printf("Supported quirks:\n");
for (i = 0; i < QUIRK_MAX; i++, entry++) {
printf(" '%s': %s (default: %d)\n", entry->name,
entry->help ? entry->help : "(no description)",
get_config_quirk((enum quirk_types)i, cfg));
}
}
/*
* Applies a quirk if applicable (the value should be non-zero).
* Returns 0 on success, otherwise failure.
*/
static int try_apply_quirk(enum quirk_types quirk, struct updater_config *cfg)
{
const struct quirk_entry *entry = cfg->quirks + quirk;
assert(quirk < QUIRK_MAX);
if (!entry->value)
return 0;
if (!entry->apply) {
ERROR("<%s> not implemented.\n", entry->name);
return -1;
}
VB2_DEBUG("Applying quirk <%s>.\n", entry->name);
return entry->apply(cfg);
}
/*
* Initialize the updater_config quirks from a list of settings.
* Returns 0 on success, otherwise failure.
*/
static int setup_config_quirks(const char *quirks, struct updater_config *cfg)
{
/*
* The list should be in NAME[=VALUE],...
* Value defaults to 1 if not specified.
*/
int r = 0;
char *buf = strdup(quirks);
char *token;
const char *delimiters = ", \n\r\t";
token = strtok(buf, delimiters);
for (; token; token = strtok(NULL, delimiters)) {
const char *name = token;
char *equ = strchr(token, '=');
int i, value = 1;
struct quirk_entry *entry = cfg->quirks;
if (!*name)
continue;
if (equ) {
*equ = '\0';
value = strtol(equ + 1, NULL, 0);
}
VB2_DEBUG("Looking for quirk <%s=%d>.\n", name, value);
for (i = 0; i < QUIRK_MAX; i++, entry++) {
if (strcmp(name, entry->name))
continue;
entry->value = value;
VB2_DEBUG("Set quirk %s to %d.\n", entry->name, value);
break;
}
if (i >= QUIRK_MAX) {
ERROR("Unknown quirk: %s\n", name);
r++;
}
}
free(buf);
return r;
}
/*
* Checks if the section is filled with given character.
* If section size is 0, return 0. If section is not empty, return non-zero if
* the section is filled with same character c, otherwise 0.
*/
static int section_is_filled_with(const struct firmware_section *section,
uint8_t c)
{
uint32_t i;
if (!section->size)
return 0;
for (i = 0; i < section->size; i++)
if (section->data[i] != c)
return 0;
return 1;
}
/*
* Decides which target in RW firmware to manipulate.
* The `target` argument specifies if we want to know "the section to be
* update" (TARGET_UPDATE), or "the (active) section * to check" (TARGET_SELF).
* Returns the section name if success, otherwise NULL.
*/
static const char *decide_rw_target(struct updater_config *cfg,
enum target_type target,
int is_vboot2)
{
const char *a = FMAP_RW_SECTION_A, *b = FMAP_RW_SECTION_B;
int slot = get_system_property(SYS_PROP_MAINFW_ACT, cfg);
/* In vboot1, always update B and check content with A. */
if (!is_vboot2)
return target == TARGET_UPDATE ? b : a;
switch (slot) {
case SLOT_A:
return target == TARGET_UPDATE ? b : a;
case SLOT_B:
return target == TARGET_UPDATE ? a : b;
}
return NULL;
}
/*
* Sets any needed system properties to indicate system should try the new
* firmware on next boot.
* The `target` argument is an FMAP section name indicating which to try.
* Returns 0 if success, non-zero if error.
*/
static int set_try_cookies(struct updater_config *cfg, const char *target,
int has_update, int is_vboot2)
{
int tries = 8;
const char *slot;
/* EC Software Sync needs few more reboots. */
if (cfg->ec_image.data)
tries += 2;
if (!has_update)
tries = 0;
/* Find new slot according to target (section) name. */
if (strcmp(target, FMAP_RW_SECTION_A) == 0)
slot = FWACT_A;
else if (strcmp(target, FMAP_RW_SECTION_B) == 0)
slot = FWACT_B;
else {
ERROR("Unknown target: %s\n", target);
return -1;
}
if (cfg->emulation) {
INFO("(emulation) %s slot %s on next boot, try_count=%d.\n",
has_update ? "Try" : "Keep", slot, tries);
return 0;
}
if (is_vboot2) {
if (VbSetSystemPropertyString("fw_try_next", slot)) {
ERROR("Failed to set fw_try_next to %s.\n", slot);
return -1;
}
if (!has_update &&
VbSetSystemPropertyString("fw_result", "success")) {
ERROR("Failed to set fw_result to success.\n");
return -1;
}
}
/* fw_try_count is identical to fwb_tries in vboot1. */
if (VbSetSystemPropertyInt("fw_try_count", tries)) {
ERROR("Failed to set fw_try_count to %d.\n", tries);
return -1;
}
return 0;
}
/*
* Writes a single section from the given firmware image to the system.
* Writes the whole firmware image if the section_name is NULL.
* Returns 0 if success, non-zero if error.
*/
static int write_firmware(struct updater_config *cfg,
const struct firmware_image *image,
const char *section_name)
{
const char *sections[2] = {0};
sections[0] = section_name;
return write_system_firmware(
cfg, image, section_name ? sections : NULL);
}
/*
* Returns True if we should start the update process for given image.
*/
static int has_valid_update(struct updater_config *cfg,
const struct firmware_image *image,
const char *section_name,
int is_host)
{
if (!image->data) {
VB2_DEBUG("No data in <%s> image.\n", image->programmer);
return 0;
}
if (section_name && !firmware_section_exists(image, section_name)) {
VB2_DEBUG("Image %s<%s> does not have section %s.\n",
image->file_name, image->programmer, section_name);
return 0;
}
/* Currently only host emulation is supported. */
if (cfg->emulation && !is_host) {
INFO("(emulation) Update %s from %s to %s (%d bytes), "
"skipped for non-host targets in emulation.\n",
section_name ? section_name : "whole image",
image->file_name, image->programmer, image->size);
return 0;
}
return 1;
}
/*
* Write a section from given firmware image to system firmware if possible.
* If section_name is NULL, write whole image. If the image has no data or if
* the section does not exist, ignore and return success.
* Returns 0 if success, non-zero if error.
*/
static int write_optional_firmware(struct updater_config *cfg,
const struct firmware_image *image,
const char *section_name,
int check_programmer_wp,
int is_host)
{
if (!has_valid_update(cfg, image, section_name, is_host))
return 0;
/*
* EC & PD may have different WP settings and we want to write
* only if it is OK.
*/
if (check_programmer_wp &&
get_system_property(SYS_PROP_WP_HW, cfg) == WP_ENABLED &&
flashrom_get_wp(image->programmer) == WP_ENABLED) {
ERROR("Target %s is write protected, skip updating.\n",
image->programmer);
return 0;
}
return write_firmware(cfg, image, section_name);
}
/*
* Preserve the GBB contents from image_from to image_to.
* HWID is always preserved, and flags are preserved only if preserve_flags set.
* Returns 0 if success, otherwise -1 if GBB header can't be found or if HWID is
* too large.
*/
static int preserve_gbb(const struct firmware_image *image_from,
struct firmware_image *image_to,
int preserve_flags, int override_flags,
uint64_t override_value)
{
const struct vb2_gbb_header *gbb_from;
struct vb2_gbb_header *gbb_to;
/* Cast to non-const because we do want to change GBB contents later. */
gbb_to = (struct vb2_gbb_header *)find_gbb(image_to);
/*
* For all cases, we need a valid gbb_to. Note for 'override GBB flags
* on a erased device', we only need gbb_to, not gbb_from.
*/
if (!gbb_to)
return -1;
gbb_from = find_gbb(image_from);
/* Preserve (for non-factory mode) or override flags. */
if (override_flags)
gbb_to->flags = override_value;
else if (preserve_flags && gbb_from)
gbb_to->flags = gbb_from->flags;
if (!gbb_from)
return -1;
/* Preserve HWID. */
return futil_set_gbb_hwid(
gbb_to, (const char *)gbb_from + gbb_from->hwid_offset);
}
/*
* Preserves the regions locked by Intel management engine.
*/
static int preserve_management_engine(struct updater_config *cfg,
const struct firmware_image *image_from,
struct firmware_image *image_to)
{
struct firmware_section section;
find_firmware_section(&section, image_from, FMAP_SI_ME);
if (!section.data) {
VB2_DEBUG("Skipped because no section %s.\n", FMAP_SI_ME);
return 0;
}
if (section_is_filled_with(&section, 0xFF)) {
VB2_DEBUG("ME is probably locked - preserving %s.\n",
FMAP_SI_DESC);
return preserve_firmware_section(
image_from, image_to, FMAP_SI_DESC);
}
if (!strcmp(image_from->programmer, PROG_HOST)) {
if (try_apply_quirk(QUIRK_PRESERVE_ME, cfg) > 0) {
VB2_DEBUG("ME needs to be preserved - preserving %s.\n",
FMAP_SI_ME);
return preserve_firmware_section(image_from, image_to,
FMAP_SI_ME);
}
} else {
VB2_DEBUG("Flashing via non-host programmer %s - no need to "
"preserve ME.\n", image_from->programmer);
}
return try_apply_quirk(QUIRK_UNLOCK_ME_FOR_UPDATE, cfg);
}
/* Preserve firmware sections by FMAP area flags. */
static int preserve_fmap_sections(struct firmware_image *from,
struct firmware_image *to,
int *count)
{
int i, errcnt = 0;
FmapHeader *fmap = to->fmap_header;
FmapAreaHeader *ah = (FmapAreaHeader*)(
(uint8_t *)fmap + sizeof(FmapHeader));
*count = 0;
for (i = 0; i < fmap->fmap_nareas; i++, ah++) {
if (!(ah->area_flags & FMAP_AREA_PRESERVE))
continue;
/* Warning: area_name 'may' not end with NUL. */
if (!firmware_section_exists(from, ah->area_name)) {
VB2_DEBUG("FMAP area does not exist in source: %.*s\n",
FMAP_NAMELEN, ah->area_name);
continue;
}
VB2_DEBUG("Preserve FMAP area: %.*s\n", FMAP_NAMELEN,
ah->area_name);
errcnt += preserve_firmware_section(from, to, ah->area_name);
(*count)++;
}
return errcnt;
}
/*
* Preserve old images without "preserve" information in FMAP.
* We have to use the legacy hard-coded list of names.
*/
static int preserve_known_sections(struct firmware_image *from,
struct firmware_image *to)
{
int errcnt = 0, i;
const char * const names[] = {
"RW_PRESERVE", /* Only octopus fw branch is using this. */
"RO_VPD",
"RW_VPD",
"SMMSTORE",
"RW_NVRAM",
"RW_ELOG",
};
for (i = 0; i < ARRAY_SIZE(names); i++) {
if (!firmware_section_exists(from, names[i]))
continue;
VB2_DEBUG("Preserve firmware section: %s\n", names[i]);
errcnt += preserve_firmware_section(from, to, names[i]);
}
return errcnt;
}
/*
* Preserves the critical sections from the current (active) firmware.
* Currently preserved sections: GBB (HWID and flags), x86 ME, and any firmware
* sections with FMAP_AREA_PRESERVE flag set (or a list of known names).
* Returns 0 if success, non-zero if error.
*/
static int preserve_images(struct updater_config *cfg)
{
int errcnt = 0, found;
struct firmware_image *from = &cfg->image_current, *to = &cfg->image;
errcnt += preserve_gbb(from, to, !cfg->factory_update,
cfg->override_gbb_flags, cfg->gbb_flags);
errcnt += preserve_management_engine(cfg, from, to);
errcnt += preserve_fmap_sections(from, to, &found);
if (!found)
errcnt += preserve_known_sections(from, to);
return errcnt;
}
/*
* Compares if two sections have same size and data.
* Returns 0 if given sections are the same, otherwise non-zero.
*/
static int compare_section(const struct firmware_section *a,
const struct firmware_section *b)
{
if (a->size != b->size)
return a->size - b->size;
return memcmp(a->data, b->data, a->size);
}
/*
* Returns if the images are different (should be updated) in given section.
* If the section contents are the same or if the section does not exist on both
* images, return value is 0 (no need to update). Otherwise the return value is
* non-zero, indicating an update should be performed.
* If section_name is NULL, compare whole images.
*/
static int section_needs_update(const struct firmware_image *image_from,
const struct firmware_image *image_to,
const char *section_name)
{
struct firmware_section from, to;
if (!section_name) {
if (image_from->size != image_to->size)
return -1;
return memcmp(image_from->data, image_to->data, image_to->size);
}
find_firmware_section(&from, image_from, section_name);
find_firmware_section(&to, image_to, section_name);
return compare_section(&from, &to);
}
/*
* Returns true if the write protection is enabled on current system.
*/
static int is_write_protection_enabled(struct updater_config *cfg)
{
/* Default to enabled. */
int wp = get_system_property(SYS_PROP_WP_HW, cfg);
if (wp == WP_DISABLED)
return wp;
/* For error or enabled, check WP SW. */
wp = get_system_property(SYS_PROP_WP_SW, cfg);
/* Consider all errors as enabled. */
if (wp != WP_DISABLED)
return WP_ENABLED;
return wp;
}
/*
* Checks if the given firmware images are compatible with current platform.
* In current implementation (following Chrome OS style), we assume the platform
* is identical to the name before a dot (.) in firmware version.
* Returns 0 for success, otherwise failure.
*/
static int check_compatible_platform(struct updater_config *cfg)
{
int len;
struct firmware_image *image_from = &cfg->image_current,
*image_to = &cfg->image;
const char *from_dot = strchr(image_from->ro_version, '.'),
*to_dot = strchr(image_to->ro_version, '.');
if (!from_dot || !to_dot) {
VB2_DEBUG("Missing dot (from=%p, to=%p)\n", from_dot, to_dot);
return -1;
}
len = from_dot - image_from->ro_version + 1;
VB2_DEBUG("Platform: %*.*s\n", len, len, image_from->ro_version);
return strncasecmp(image_from->ro_version, image_to->ro_version, len);
}
/*
* Returns a valid root key from GBB header, or NULL on failure.
*/
const struct vb2_packed_key *get_rootkey(
const struct vb2_gbb_header *gbb)
{
struct vb2_packed_key *key = NULL;
key = (struct vb2_packed_key *)((uint8_t *)gbb + gbb->rootkey_offset);
if (vb2_packed_key_looks_ok(key, gbb->rootkey_size)) {
ERROR("Invalid root key.\n");
return NULL;
}
return key;
}
/*
* Returns a keyblock key from given image section, or NULL on failure.
*/
static const struct vb2_keyblock *get_keyblock(
const struct firmware_image *image,
const char *section_name)
{
struct firmware_section section;
find_firmware_section(&section, image, section_name);
/* A keyblock must be followed by a vb2_fw_preamble. */
if (section.size < sizeof(struct vb2_keyblock) +
sizeof(struct vb2_fw_preamble)) {
ERROR("Invalid section: %s\n", section_name);
return NULL;
}
return (const struct vb2_keyblock *)section.data;
}
/*
* Duplicates a keyblock and returns the duplicated block.
* The caller must free the returned keyblock after being used.
*/
static struct vb2_keyblock *dupe_keyblock(const struct vb2_keyblock *block)
{
struct vb2_keyblock *new_block;
new_block = (struct vb2_keyblock *)malloc(block->keyblock_size);
assert(new_block);
memcpy(new_block, block, block->keyblock_size);
return new_block;
}
/*
* Verifies if keyblock is signed with given key.
* Returns 0 on success, otherwise failure.
*/
static int verify_keyblock(const struct vb2_keyblock *block,
const struct vb2_packed_key *sign_key) {
int r;
uint8_t workbuf[VB2_FIRMWARE_WORKBUF_RECOMMENDED_SIZE]
__attribute__((aligned(VB2_WORKBUF_ALIGN)));
struct vb2_workbuf wb;
struct vb2_public_key key;
struct vb2_keyblock *new_block;
if (block->keyblock_signature.sig_size == 0) {
ERROR("Keyblock is not signed.\n");
return -1;
}
vb2_workbuf_init(&wb, workbuf, sizeof(workbuf));
if (VB2_SUCCESS != vb2_unpack_key(&key, sign_key)) {
ERROR("Invalid signing key.\n");
return -1;
}
/*
* vb2_verify_keyblock will destroy the signature inside keyblock
* so we have to verify with a local copy.
*/
new_block = dupe_keyblock(block);
r = vb2_verify_keyblock(new_block, new_block->keyblock_size, &key, &wb);
free(new_block);
if (r != VB2_SUCCESS) {
ERROR("Failed verifying keyblock.\n");
return -1;
}
return 0;
}
/*
* Gets the data key and firmware version from a section on firmware image.
* The section should contain a vb2_keyblock and a vb2_fw_preamble immediately
* after keyblock so we can decode and save the data key and firmware version
* into argument `data_key_version` and `firmware_version`.
* Returns 0 for success, otherwise failure.
*/
static int get_key_versions(const struct firmware_image *image,
const char *section_name,
unsigned int *data_key_version,
unsigned int *firmware_version)
{
const struct vb2_keyblock *keyblock = get_keyblock(image, section_name);
const struct vb2_fw_preamble *pre;
if (!keyblock)
return -1;
*data_key_version = keyblock->data_key.key_version;
pre = (struct vb2_fw_preamble *)((uint8_t*)keyblock +
keyblock->keyblock_size);
*firmware_version = pre->firmware_version;
VB2_DEBUG("%s: data key version = %d, firmware version = %d\n",
image->file_name, *data_key_version, *firmware_version);
return 0;
}
/*
* Checks if the root key in ro_image can verify vblocks in rw_image.
* Returns 0 for success, otherwise failure.
*/
static enum rootkey_compat_result check_compatible_root_key(
const struct firmware_image *ro_image,
const struct firmware_image *rw_image)
{
const struct vb2_gbb_header *gbb = find_gbb(ro_image);
const struct vb2_packed_key *rootkey;
const struct vb2_keyblock *keyblock;
if (!gbb)
return ROOTKEY_COMPAT_ERROR;
rootkey = get_rootkey(gbb);
if (!rootkey)
return ROOTKEY_COMPAT_ERROR;
/* Assume VBLOCK_A and VBLOCK_B are signed in same way. */
keyblock = get_keyblock(rw_image, FMAP_RW_VBLOCK_A);
if (!keyblock)
return ROOTKEY_COMPAT_ERROR;
if (verify_keyblock(keyblock, rootkey) != 0) {
const struct vb2_gbb_header *gbb_rw = find_gbb(rw_image);
const struct vb2_packed_key *rootkey_rw = NULL;
int is_same_key = 0, to_dev = 0;
/*
* Try harder to provide more info.
* packed_key_sha1_string uses static buffer so don't call
* it twice in args list of one expression.
*/
if (gbb_rw)
rootkey_rw = get_rootkey(gbb_rw);
if (rootkey_rw) {
if (rootkey->key_offset == rootkey_rw->key_offset &&
rootkey->key_size == rootkey_rw->key_size &&
memcmp(rootkey, rootkey_rw, rootkey->key_size +
rootkey->key_offset) == 0)
is_same_key = 1;
if (strcmp(packed_key_sha1_string(rootkey_rw),
ROOTKEY_HASH_DEV) == 0)
to_dev = 1;
}
INFO("Current (RO) firmware image has root key: %s\n",
packed_key_sha1_string(rootkey));
if (is_same_key) {
ERROR("Rootkey is same as target (RW) image. \n"
"Maybe RW corrupted?");
return ROOTKEY_COMPAT_ERROR;
}
WARN("Target (RW) image is signed by root key: %s%s\n",
rootkey_rw ? packed_key_sha1_string(rootkey_rw) :
"<invalid>", to_dev ? " (DEV/unsigned)" : "");
return to_dev ? ROOTKEY_COMPAT_REKEY_TO_DEV :
ROOTKEY_COMPAT_REKEY;
}
return ROOTKEY_COMPAT_OK;
}
/*
* Returns non-zero if the RW_LEGACY needs to be updated, otherwise 0.
*/
static int legacy_needs_update(struct updater_config *cfg)
{
int has_from, has_to;
const char * const tag = "cros_allow_auto_update";
const char *section = FMAP_RW_LEGACY;
const char *tmp_to, *tmp_from;
VB2_DEBUG("Checking %s contents...\n", FMAP_RW_LEGACY);
tmp_to = get_firmware_image_temp_file(&cfg->image, &cfg->tempfiles);
tmp_from = get_firmware_image_temp_file(&cfg->image_current,
&cfg->tempfiles);
if (!tmp_from || !tmp_to)
return 0;
has_to = cbfs_file_exists(tmp_to, section, tag);
has_from = cbfs_file_exists(tmp_from, section, tag);
if (!has_from || !has_to) {
VB2_DEBUG("Current legacy firmware has%s updater tag (%s) and "
"target firmware has%s updater tag, won't update.\n",
has_from ? "" : " no", tag, has_to ? "" : " no");
return 0;
}
return section_needs_update(
&cfg->image_current, &cfg->image, FMAP_RW_LEGACY);
}
/*
* Checks if the given firmware image is signed with a key that won't be
* blocked by TPM's anti-rollback detection.
* Returns 0 for success, otherwise failure.
*/
static int do_check_compatible_tpm_keys(struct updater_config *cfg,
const struct firmware_image *rw_image)
{
unsigned int data_key_version = 0, firmware_version = 0,
tpm_data_key_version = 0, tpm_firmware_version = 0;
int tpm_fwver = 0;
/* Fail if the given image does not look good. */
if (get_key_versions(rw_image, FMAP_RW_VBLOCK_A, &data_key_version,
&firmware_version) != 0)
return -1;
/* The stored tpm_fwver can be 0 (b/116298359#comment3). */
tpm_fwver = get_system_property(SYS_PROP_TPM_FWVER, cfg);
if (tpm_fwver < 0) {
/*
* tpm_fwver is commonly misreported in --ccd mode, so allow
* force_update to ignore the reported value.
*/
if (!cfg->force_update)
ERROR("Invalid tpm_fwver: %d.\n", tpm_fwver);
return -1;
}
tpm_data_key_version = tpm_fwver >> 16;
tpm_firmware_version = tpm_fwver & 0xffff;
VB2_DEBUG("TPM: data_key_version = %d, firmware_version = %d\n",
tpm_data_key_version, tpm_firmware_version);
if (tpm_data_key_version > data_key_version) {
ERROR("Data key version rollback detected (%d->%d).\n",
tpm_data_key_version, data_key_version);
return -1;
}
if (tpm_firmware_version > firmware_version) {
ERROR("Firmware version rollback detected (%d->%d).\n",
tpm_firmware_version, firmware_version);
return -1;
}
return 0;
}
/*
* Wrapper for do_check_compatible_tpm_keys.
* Will return 0 if do_check_compatible_tpm_keys success or if cfg.force_update
* is set; otherwise non-zero.
*/
static int check_compatible_tpm_keys(struct updater_config *cfg,
const struct firmware_image *rw_image)
{
int r = do_check_compatible_tpm_keys(cfg, rw_image);
if (!r)
return r;
if (!cfg->force_update) {
ERROR("Add --force if you want to waive TPM checks.\n");
return r;
}
WARN("TPM KEYS CHECK IS WAIVED BY --force. YOU ARE ON YOUR OWN.\n");
return 0;
}
/*
* Update EC (RO+RW) firmware.
* Returns 0 if success, non-zero if error.
*/
static int update_ec_firmware(struct updater_config *cfg)
{
struct firmware_image *ec_image = &cfg->ec_image;
if (!has_valid_update(cfg, ec_image, NULL, 0))
return 0;
int r = try_apply_quirk(QUIRK_EC_PARTIAL_RECOVERY, cfg);
switch (r) {
case EC_RECOVERY_FULL:
return write_optional_firmware(cfg, ec_image, NULL, 1, 0);
case EC_RECOVERY_RO:
return write_optional_firmware(cfg, ec_image, "WP_RO", 1, 0);
case EC_RECOVERY_DONE:
/* Done by some quirks, for example EC RO software sync. */
return 0;
}
return r;
}
const char * const updater_error_messages[] = {
[UPDATE_ERR_DONE] = "Done (no error)",
[UPDATE_ERR_NEED_RO_UPDATE] = "RO changed and no WP. Need full update.",
[UPDATE_ERR_NO_IMAGE] = "No image to update; try specify with -i.",
[UPDATE_ERR_SYSTEM_IMAGE] = "Cannot load system active firmware.",
[UPDATE_ERR_INVALID_IMAGE] = "The given firmware image is not valid.",
[UPDATE_ERR_SET_COOKIES] = "Failed writing system flags to try update.",
[UPDATE_ERR_WRITE_FIRMWARE] = "Failed writing firmware.",
[UPDATE_ERR_PLATFORM] = "Your system platform is not compatible.",
[UPDATE_ERR_TARGET] = "No valid RW target to update. Abort.",
[UPDATE_ERR_ROOT_KEY] = "RW signed by incompatible root key "
"(different from RO).",
[UPDATE_ERR_TPM_ROLLBACK] = "RW not usable due to TPM anti-rollback.",
[UPDATE_ERR_UNKNOWN] = "Unknown error.",
};
/*
* The main updater for "Try-RW update", to update only one RW section
* and try if it can boot properly on reboot.
* This was also known as --mode=autoupdate,--wp=1 in legacy updater.
* Returns UPDATE_ERR_DONE if success, otherwise error.
*/
static enum updater_error_codes update_try_rw_firmware(
struct updater_config *cfg,
struct firmware_image *image_from,
struct firmware_image *image_to,
int wp_enabled)
{
const char *target;
int has_update = 1;
int is_vboot2 = get_system_property(SYS_PROP_FW_VBOOT2, cfg);
preserve_gbb(image_from, image_to, 1, 0, 0);
if (!wp_enabled && section_needs_update(
image_from, image_to, FMAP_RO_SECTION))
return UPDATE_ERR_NEED_RO_UPDATE;
INFO("Checking compatibility...\n");
if (check_compatible_root_key(image_from, image_to))
return UPDATE_ERR_ROOT_KEY;
if (check_compatible_tpm_keys(cfg, image_to))
return UPDATE_ERR_TPM_ROLLBACK;
VB2_DEBUG("Firmware %s vboot2.\n", is_vboot2 ? "is" : "is NOT");
target = decide_rw_target(cfg, TARGET_SELF, is_vboot2);
if (target == NULL) {
ERROR("TRY-RW update needs system to boot in RW firmware.\n");
return UPDATE_ERR_TARGET;
}
INFO("Checking %s contents...\n", target);
if (!firmware_section_exists(image_to, target)) {
ERROR("Cannot find section '%s' on firmware image: %s\n",
target, image_to->file_name);
return UPDATE_ERR_INVALID_IMAGE;
}
if (!cfg->force_update)
has_update = section_needs_update(image_from, image_to, target);
if (has_update) {
target = decide_rw_target(cfg, TARGET_UPDATE, is_vboot2);
STATUS("TRY-RW UPDATE: Updating %s to try on reboot.\n",
target);
if (write_firmware(cfg, image_to, target))
return UPDATE_ERR_WRITE_FIRMWARE;
}
/* Always set right cookies for next boot. */
if (set_try_cookies(cfg, target, has_update, is_vboot2))
return UPDATE_ERR_SET_COOKIES;
/* Do not fail on updating legacy. */
if (legacy_needs_update(cfg)) {
has_update = 1;
STATUS("LEGACY UPDATE: Updating %s.\n", FMAP_RW_LEGACY);
write_firmware(cfg, image_to, FMAP_RW_LEGACY);
}
if (!has_update)
STATUS("NO UPDATE: No need to update.\n");
return UPDATE_ERR_DONE;
}
/*
* The main updater for "RW update".
* This was also known as --mode=recovery, --wp=1 in legacy updater.
* Returns UPDATE_ERR_DONE if success, otherwise error.
*/
static enum updater_error_codes update_rw_firmware(
struct updater_config *cfg,
struct firmware_image *image_from,
struct firmware_image *image_to)
{
int i, num = 0;
static const char * const required_sections[] = {
FMAP_RW_SECTION_A,
FMAP_RW_SECTION_B,
};
static const char * const optional_sections[] = {
FMAP_RW_LEGACY,
FMAP_RW_SHARED,
};
const char *sections[ARRAY_SIZE(required_sections) +
ARRAY_SIZE(optional_sections) + 1];
STATUS("RW UPDATE: Updating RW sections (%s, %s, %s, and %s).\n",
FMAP_RW_SECTION_A, FMAP_RW_SECTION_B, FMAP_RW_SHARED,
FMAP_RW_LEGACY);
INFO("Checking compatibility...\n");
if (check_compatible_root_key(image_from, image_to))
return UPDATE_ERR_ROOT_KEY;
if (check_compatible_tpm_keys(cfg, image_to))
return UPDATE_ERR_TPM_ROLLBACK;
for (i = 0; i < ARRAY_SIZE(required_sections); i++)
sections[num++] = required_sections[i];
/*
* The FMAP_RW_LEGACY is a special optional section.
* We may also consider only updating legacy if legacy_needs_update()
* returns true. However, given this is for 'recovery', it is probably
* better to restore everything to the default states. We may revisit
* this if a new scenario is found.
*/
for (i = 0; i < ARRAY_SIZE(optional_sections); i++) {
const char *name = optional_sections[i];
if (!firmware_section_exists(image_from, name) ||
!firmware_section_exists(image_to, name)) {
VB2_DEBUG("Skipped optional section: %s\n", name);
continue;
}
sections[num++] = name;
}
assert(num < ARRAY_SIZE(sections));
sections[num] = NULL;
if (write_system_firmware(cfg, image_to, sections))
return UPDATE_ERR_WRITE_FIRMWARE;
return UPDATE_ERR_DONE;
}
/*
* The main updater for "Legacy update".
* This is equivalent to --mode=legacy.
* Returns UPDATE_ERR_DONE if success, otherwise error.
*/
static enum updater_error_codes update_legacy_firmware(
struct updater_config *cfg,
struct firmware_image *image_to)
{
STATUS("LEGACY UPDATE: Updating firmware %s.\n", FMAP_RW_LEGACY);
if (write_firmware(cfg, image_to, FMAP_RW_LEGACY))
return UPDATE_ERR_WRITE_FIRMWARE;
return UPDATE_ERR_DONE;
}
/*
* The main updater for "Full update".
* This was also known as "--mode=factory" or "--mode=recovery, --wp=0" in
* legacy updater.
* Returns UPDATE_ERR_DONE if success, otherwise error.
*/
static enum updater_error_codes update_whole_firmware(
struct updater_config *cfg,
struct firmware_image *image_to)
{
STATUS("FULL UPDATE: Updating whole firmware image(s), RO+RW.\n");
if (preserve_images(cfg))
VB2_DEBUG("Failed to preserve some sections - ignore.\n");
INFO("Checking compatibility...\n");
if (!cfg->force_update) {
/* Check if the image_to itself is broken */
enum rootkey_compat_result r = check_compatible_root_key(
image_to, image_to);
if (r != ROOTKEY_COMPAT_OK) {
ERROR("Target image does not look valid. \n"
"Add --force if you really want to use it.");
return UPDATE_ERR_ROOT_KEY;
}
/* Check if the system is going to re-key. */
r = check_compatible_root_key(&cfg->image_current, image_to);
/* We only allow re-key to non-dev keys. */
switch (r) {
case ROOTKEY_COMPAT_OK:
break;
case ROOTKEY_COMPAT_REKEY:
INFO("Will change firmware signing key.\n");
break;
case ROOTKEY_COMPAT_REKEY_TO_DEV:
ERROR("Re-key to DEV is not allowed. \n"
"Add --force if you really want to do that.");
return UPDATE_ERR_ROOT_KEY;
default:
return UPDATE_ERR_ROOT_KEY;
}
}
if (check_compatible_tpm_keys(cfg, image_to))
return UPDATE_ERR_TPM_ROLLBACK;
/* FMAP may be different so we should just update all. */
if (write_firmware(cfg, image_to, NULL) ||
update_ec_firmware(cfg) ||
write_optional_firmware(cfg, &cfg->pd_image, NULL, 1, 0))
return UPDATE_ERR_WRITE_FIRMWARE;
return UPDATE_ERR_DONE;
}
/*
* The main updater to update system firmware using the configuration parameter.
* Returns UPDATE_ERR_DONE if success, otherwise failure.
*/
enum updater_error_codes update_firmware(struct updater_config *cfg)
{
int wp_enabled, done = 0;
enum updater_error_codes r = UPDATE_ERR_UNKNOWN;
struct firmware_image *image_from = &cfg->image_current,
*image_to = &cfg->image;
if (!image_to->data)
return UPDATE_ERR_NO_IMAGE;
STATUS("Target image: %s (RO:%s, RW/A:%s, RW/B:%s).\n",
image_to->file_name, image_to->ro_version,
image_to->rw_version_a, image_to->rw_version_b);
try_apply_quirk(QUIRK_NO_VERIFY, cfg);
if (try_apply_quirk(QUIRK_MIN_PLATFORM_VERSION, cfg)) {
if (!cfg->force_update) {
ERROR("Add --force to waive checking the version.\n");
return UPDATE_ERR_PLATFORM;
}
}
if (!image_from->data) {
int ret;
INFO("Loading current system firmware...\n");
ret = load_system_firmware(cfg, image_from);
if (ret == IMAGE_PARSE_FAILURE && cfg->force_update) {
WARN("No compatible firmware in system.\n");
cfg->check_platform = 0;
} else if (ret)
return UPDATE_ERR_SYSTEM_IMAGE;
}
STATUS("Current system: %s (RO:%s, RW/A:%s, RW/B:%s).\n",
image_from->file_name, image_from->ro_version,
image_from->rw_version_a, image_from->rw_version_b);
try_apply_quirk(QUIRK_NO_CHECK_PLATFORM, cfg);
if (cfg->check_platform && check_compatible_platform(cfg)) {
ERROR("The firmware image is not compatible with your system. "
"If you really want to proceed, please run again with: "
"--quirks=no_check_platform\n");
return UPDATE_ERR_PLATFORM;
}
wp_enabled = is_write_protection_enabled(cfg);
STATUS("Write protection: %d (%s; HW=%d, SW=%d).\n", wp_enabled,
wp_enabled ? "enabled" : "disabled",
get_system_property(SYS_PROP_WP_HW, cfg),
get_system_property(SYS_PROP_WP_SW, cfg));
if (try_apply_quirk(QUIRK_ENLARGE_IMAGE, cfg))
return UPDATE_ERR_SYSTEM_IMAGE;
if (try_apply_quirk(QUIRK_EVE_SMM_STORE, cfg))
return UPDATE_ERR_INVALID_IMAGE;
if (debugging_enabled)
print_system_properties(cfg);
if (cfg->legacy_update)
return update_legacy_firmware(cfg, image_to);
if (cfg->try_update) {
r = update_try_rw_firmware(cfg, image_from, image_to,
wp_enabled);
if (r == UPDATE_ERR_NEED_RO_UPDATE)
WARN("%s\n", updater_error_messages[r]);
else
done = 1;
}
if (!done) {
r = wp_enabled ? update_rw_firmware(cfg, image_from, image_to) :
update_whole_firmware(cfg, image_to);
}
/* Providing more hints for what to do on failure. */
if (r == UPDATE_ERR_ROOT_KEY && wp_enabled)
ERROR("To change keys in RO area, you must first remove "
"write protection ( " REMOVE_WP_URL " ).\n");
return r;
}
/*
* Allocates and initializes a updater_config object with default values.
* Returns the newly allocated object, or NULL on error.
*/
struct updater_config *updater_new_config(void)
{
struct updater_config *cfg = (struct updater_config *)calloc(
1, sizeof(struct updater_config));
if (!cfg)
return cfg;
cfg->image.programmer = PROG_HOST;
cfg->image_current.programmer = PROG_HOST;
cfg->ec_image.programmer = PROG_EC;
cfg->pd_image.programmer = PROG_PD;
cfg->check_platform = 1;
cfg->do_verify = 1;
init_system_properties(&cfg->system_properties[0],
ARRAY_SIZE(cfg->system_properties));
updater_register_quirks(cfg);
return cfg;
}
/*
* Setup quirks for updating current image.
*
* Quirks must be loaded after image loaded because we use image contents to
* decide default quirks to load. Also, we have to load default quirks first so
* user can override them using command line.
*
* Returns 0 on success, otherwise number of failures.
*/
static int updater_setup_quirks(struct updater_config *cfg,
const struct updater_config_arguments *arg)
{
int errorcnt = 0;
const char *model_quirks = updater_get_model_quirks(cfg);
char *cbfs_quirks = updater_get_cbfs_quirks(cfg);
if (model_quirks)
errorcnt += !!setup_config_quirks(model_quirks, cfg);
if (cbfs_quirks) {
errorcnt += !!setup_config_quirks(cbfs_quirks, cfg);
free(cbfs_quirks);
}
if (arg->quirks)
errorcnt += !!setup_config_quirks(arg->quirks, cfg);
return errorcnt;
}
/*
* Loads images into updater configuration.
* Returns 0 on success, otherwise number of failures.
*/
static int updater_load_images(struct updater_config *cfg,
const struct updater_config_arguments *arg,
const char *image,
const char *ec_image,
const char *pd_image)
{
int errorcnt = 0;
struct archive *ar = cfg->archive;
if (!cfg->image.data && image) {
if (image && strcmp(image, "-") == 0) {
INFO("Reading image from stdin...\n");
image = create_temp_file(&cfg->tempfiles);
if (image)
errorcnt += !!save_file_from_stdin(image);
}
errorcnt += !!load_firmware_image(&cfg->image, image, ar);
if (!errorcnt)
errorcnt += updater_setup_quirks(cfg, arg);
}
if (arg->host_only)
return errorcnt;
if (!cfg->ec_image.data && ec_image)
errorcnt += !!load_firmware_image(&cfg->ec_image, ec_image, ar);
if (!cfg->pd_image.data && pd_image)
errorcnt += !!load_firmware_image(&cfg->pd_image, pd_image, ar);
return errorcnt;
}
/*
* Writes a firmware image to specified file.
* Returns 0 on success, otherwise failure.
*/
static int updater_output_image(const struct firmware_image *image,
const char *fname, const char *root)
{
int r = 0;
char *fpath;
if (!image->data)
return 0;
ASPRINTF(&fpath, "%s/%s", root, fname);
r = vb2_write_file(fpath, image->data, image->size);
if (r)
ERROR("Failed writing firmware image to: %s\n", fpath);
else
printf("Firmware image saved in: %s\n", fpath);
free(fpath);
return !!r;
}
/*
* Applies custom label information to an existing model config.
* Returns 0 on success, otherwise failure.
*/
static int updater_apply_custom_label(struct updater_config *cfg,
struct model_config *model,
const char *signature_id)
{
const char *tmp_image = NULL;
assert(model->is_custom_label);
if (!signature_id) {
if (!cfg->image_current.data) {
INFO("Loading system firmware for custom label...\n");
load_system_firmware(cfg, &cfg->image_current);
}
tmp_image = get_firmware_image_temp_file(
&cfg->image_current, &cfg->tempfiles);
if (!tmp_image) {
ERROR("Failed to get system current firmware\n");
return 1;
}
if (get_config_quirk(QUIRK_OVERRIDE_SIGNATURE_ID, cfg) &&
is_write_protection_enabled(cfg))
quirk_override_signature_id(
cfg, model, &signature_id);
}
return !!model_apply_custom_label(
model, cfg->archive, signature_id, tmp_image);
}
/*
* Setup what the updater has to do against an archive.
* Returns number of failures, or 0 on success.
*/
static int updater_setup_archive(
struct updater_config *cfg,
const struct updater_config_arguments *arg,
struct manifest *manifest,
int is_factory)
{
int errorcnt = 0;
struct archive *ar = cfg->archive;
const struct model_config *model;
if (arg->do_manifest) {
assert(!arg->image);
print_json_manifest(manifest);
/* No additional error. */
return errorcnt;
}
model = manifest_find_model(manifest, arg->model);
if (!model)
return ++errorcnt;
/* Load images now so we can get quirks in custom label checks. */
errorcnt += updater_load_images(
cfg, arg, model->image, model->ec_image,
model->pd_image);
if (model->is_custom_label && !manifest->has_keyset) {
/*
* Developers running unsigned updaters (usually local build)
* won't be able match any custom label tags.
*/
WARN("No keysets found - this is probably a local build of \n"
"unsigned firmware updater. Skip applying custom label.");
} else if (model->is_custom_label) {
/*
* It is fine to fail in updater_apply_custom_label for factory
* mode so we are not checking the return value; instead we
* verify if the patches do contain new root key.
*/
updater_apply_custom_label(cfg, (struct model_config *)model,
arg->signature_id);
if (!model->patches.rootkey) {
if (is_factory ||
is_write_protection_enabled(cfg) ||
get_config_quirk(QUIRK_ALLOW_EMPTY_CUSTOM_LABEL_TAG,
cfg)) {
WARN("No VPD for custom label.\n");
} else {
ERROR("Need VPD set for custom label.\n");
return ++errorcnt;
}
}
}
errorcnt += patch_image_by_model(&cfg->image, model, ar);
return errorcnt;
}
/*
* Helper function to setup an allocated updater_config object.
* Returns number of failures, or 0 on success.
*/
int updater_setup_config(struct updater_config *cfg,
const struct updater_config_arguments *arg,
int *do_update)
{
int errorcnt = 0;
int check_single_image = 0, check_wp_disabled = 0;
int do_output = 0;
const char *archive_path = arg->archive;
/* Setup values that may change output or decision of other argument. */
cfg->verbosity = arg->verbosity;
cfg->use_diff_image = arg->fast_update;
cfg->do_verify = !arg->fast_update;
cfg->factory_update = arg->is_factory;
if (arg->force_update)
cfg->force_update = 1;
/* Check incompatible options and return early. */
if (arg->do_manifest) {
if (!!arg->archive == !!arg->image) {
ERROR("--manifest needs either -a or -i\n");
return ++errorcnt;
}
if (arg->archive && (arg->ec_image || arg->pd_image)) {
ERROR("--manifest for archive (-a) does not accept \n"
"additional images (--ec_image, --pd_image).");
return ++errorcnt;
}
*do_update = 0;
}
if (arg->repack || arg->unpack) {
if (!arg->archive) {
ERROR("--{re,un}pack needs --archive.\n");
return ++errorcnt;
}
*do_update = 0;
}
/* Setup update mode. */
if (arg->try_update)
cfg->try_update = 1;
if (arg->mode) {
if (strcmp(arg->mode, "autoupdate") == 0) {
cfg->try_update = 1;
} else if (strcmp(arg->mode, "recovery") == 0) {
cfg->try_update = 0;
} else if (strcmp(arg->mode, "legacy") == 0) {
cfg->legacy_update = 1;
} else if (strcmp(arg->mode, "factory") == 0 ||
strcmp(arg->mode, "factory_install") == 0) {
cfg->factory_update = 1;
} else if (strcmp(arg->mode, "output") == 0) {
do_output = 1;
} else {
errorcnt++;
ERROR("Invalid mode: %s\n", arg->mode);
}
}
if (cfg->factory_update) {
/* factory_update must be processed after arg->mode. */
check_wp_disabled = 1;
cfg->try_update = 0;
}
cfg->gbb_flags = arg->gbb_flags;
cfg->override_gbb_flags = arg->override_gbb_flags;
/* Setup properties and fields that do not have external dependency. */
if (arg->programmer) {
check_single_image = 1;
cfg->image.programmer = arg->programmer;
cfg->image_current.programmer = arg->programmer;
VB2_DEBUG("AP (host) programmer changed to %s.\n",
arg->programmer);
}
if (arg->sys_props)
override_properties_from_list(arg->sys_props, cfg);
if (arg->write_protection) {
/* arg->write_protection must be done after arg->sys_props. */
int r = strtol(arg->write_protection, NULL, 0);
override_system_property(SYS_PROP_WP_HW, cfg, r);
override_system_property(SYS_PROP_WP_SW, cfg, r);
}
/* Set up archive and load images. */
if (arg->emulation) {
/* Process emulation file first. */
cfg->emulation = arg->emulation;
VB2_DEBUG("Using file %s for emulation.\n", arg->emulation);
errorcnt += !!load_firmware_image(
&cfg->image_current, arg->emulation, NULL);
}
/* Always load images specified from command line directly. */
errorcnt += updater_load_images(
cfg, arg, arg->image, arg->ec_image, arg->pd_image);
if (!archive_path)
archive_path = ".";
cfg->archive = archive_open(archive_path);
if (!cfg->archive) {
ERROR("Failed to open archive: %s\n", archive_path);
return ++errorcnt;
}
/* Process archives which may not have valid contents. */
if (arg->repack || arg->unpack) {
const char *work_name = arg->repack ? arg->repack : arg->unpack;
struct archive *from, *to, *work;
work = archive_open(work_name);
if (arg->repack) {
from = work;
to = cfg->archive;
} else {
to = work;
from = cfg->archive;
}
if (!work) {
ERROR("Failed to open: %s\n", work_name);
return ++errorcnt;
}
errorcnt += !!archive_copy(from, to);
/* TODO(hungte) Update manifest after copied. */
archive_close(work);
return errorcnt;
}
/* Load images from archive. */
if (arg->archive) {
struct manifest *m = new_manifest_from_archive(cfg->archive);
if (m) {
errorcnt += updater_setup_archive(
cfg, arg, m, cfg->factory_update);
delete_manifest(m);
} else {
ERROR("Failure in archive: %s\n", arg->archive);
++errorcnt;
}
} else if (arg->do_manifest) {
char name[] = "default";
struct model_config model = {
.name = name,
.image = arg->image,
.ec_image = arg->ec_image,
.pd_image = arg->pd_image,
};
struct manifest manifest = {
.num = 1,
.models = &model,
};
assert(model.image);
print_json_manifest(&manifest);
}
/*
* Images should be loaded now (either in first updater_load_images or
* second call from updater_setup_archive) and quirks should be loaded.
* For invocation without image, we want to get quirks now.
*/
if (!cfg->image.data && arg->quirks)
errorcnt += !!setup_config_quirks(arg->quirks, cfg);
/* Additional checks. */
if (check_single_image && !do_output && (cfg->ec_image.data || cfg->pd_image.data)) {
errorcnt++;
ERROR("EC/PD images are not supported in current mode.\n");
}
if (check_wp_disabled && is_write_protection_enabled(cfg)) {
errorcnt++;
ERROR("Please remove write protection for factory mode \n"
"( " REMOVE_WP_URL " ).");
}
if (!errorcnt && do_output) {
const char *r = arg->output_dir;
if (!r)
r = ".";
/* TODO(hungte) Remove bios.bin when migration is done. */
errorcnt += updater_output_image(&cfg->image, "bios.bin", r);
errorcnt += updater_output_image(&cfg->image, "image.bin", r);
errorcnt += updater_output_image(&cfg->ec_image, "ec.bin", r);
errorcnt += updater_output_image(&cfg->pd_image, "pd.bin", r);
*do_update = 0;
}
return errorcnt;
}
/*
* Releases all resources in an updater configuration object.
*/
void updater_delete_config(struct updater_config *cfg)
{
assert(cfg);
free_firmware_image(&cfg->image);
free_firmware_image(&cfg->image_current);
free_firmware_image(&cfg->ec_image);
free_firmware_image(&cfg->pd_image);
remove_all_temp_files(&cfg->tempfiles);
if (cfg->archive)
archive_close(cfg->archive);
free(cfg);
}