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qbootctl
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its ALIIIIIIVE

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not yet properly tested, but it seems to mostly work just fine. Slot
switching and marking boot as successful at least just work!
merge-requests/7/head
Caleb Connolly 3 years ago
parent b28a87499c
commit 55612452e0
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GPG Key ID: 0583312B195F64B6
14 changed files with 701 additions and 697 deletions
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  1. 1
      .gitignore
  2. 95
      BootControl.cpp
  3. 45
      BootControl.h
  4. 15
      CMakeLists.txt
  5. 26
      README.md
  6. 136
      boot_control.h
  7. 202
      gpt-utils.cpp
  8. 30
      include/scsi/ufs/ioctl.h
  9. 86
      include/scsi/ufs/ufs.h
  10. 22
      meson.build
  11. 414
      qbootctl.cpp
  12. 206
      ufs-bsg.cpp
  13. 95
      ufs-bsg.h
  14. 13
      utils.h

1
.gitignore vendored
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@ -1,2 +1,3 @@
.vscode/
.push.settings.jsonc
build/

95
BootControl.cpp
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@ -1,95 +0,0 @@
/*
* Copyright (C) 2016 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 <string>
#include "boot_control.h"
#include "BootControl.h"
BootControl::BootControl(boot_control_module *module) : mModule(module) {
}
// Methods from ::android::hardware::boot::V1_0::IBootControl follow.
unsigned int BootControl::getNumberSlots() {
return mModule->getNumberSlots(mModule);
}
unsigned int BootControl::getCurrentSlot() {
return mModule->getCurrentSlot(mModule);
}
int BootControl::markBootSuccessful() {
int ret = mModule->markBootSuccessful(mModule);
return ret;
}
int BootControl::setActiveBootSlot(unsigned int slot) {
int ret = mModule->setActiveBootSlot(mModule, slot);
return ret;
}
int BootControl::setSlotAsUnbootable(unsigned int slot) {
int ret = mModule->setSlotAsUnbootable(mModule, slot);
return ret;
}
BoolResult BootControl::isSlotBootable(unsigned int slot) {
int32_t ret = mModule->isSlotBootable(mModule, slot);
if (ret < 0) {
return BoolResult::INVALID_SLOT;
}
return ret ? BoolResult::TRUE : BoolResult::FALSE;
}
BoolResult BootControl::isSlotMarkedSuccessful(unsigned int slot) {
int32_t ret = mModule->isSlotMarkedSuccessful(mModule, slot);
if (ret < 0) {
return BoolResult::INVALID_SLOT;
}
return ret ? BoolResult::TRUE : BoolResult::FALSE;
}
std::string BootControl::getSuffix(unsigned int slot) {
std::string ans;
const char *suffix = mModule->getSuffix(mModule, slot);
if (suffix) {
ans = std::string(suffix);
}
return ans;
}
BootControl* BootControlInit() {
boot_control_module* module;
// For devices that don't build a standalone libhardware bootctrl impl for recovery,
// we simulate the hw_get_module() by accessing it from the current process directly.
const boot_control_module* hw_module = &HAL_MODULE_INFO_SYM;
module = reinterpret_cast<boot_control_module*>(const_cast<boot_control_module*>(hw_module));
module->init(module);
return new BootControl(module);
}
int main (int argc, char * argv []) {
BootControl *bootctl = BootControlInit();
printf("======= Current slot: %d\n", bootctl->getCurrentSlot());
printf("======= isslotbootable: a = %d, b = %d\n", bootctl->isSlotBootable(0),
bootctl->isSlotBootable(1));
printf("======= markBootSuccessful\n", bootctl->markBootSuccessful());
printf("======= isSlotMarkedSuccessful: a = %d, b = %d\n", bootctl->isSlotMarkedSuccessful(0),
bootctl->isSlotMarkedSuccessful(1));
// printf("\n\n\n trying to switch to slot b: %d\n",
// bootctl->setActiveBootSlot(1));
}

45
BootControl.h
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@ -1,45 +0,0 @@
/*
* Copyright (C) 2016 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.
*/
#ifndef ANDROID_HARDWARE_BOOT_V1_0_BOOTCONTROL_H
#define ANDROID_HARDWARE_BOOT_V1_0_BOOTCONTROL_H
/**
* A result encapsulating whether a function returned true, false or
* failed due to an invalid slot number
*/
enum class BoolResult : int {
FALSE = 0,
TRUE = 1,
INVALID_SLOT = -1 /* -1 */,
};
struct BootControl {
BootControl(boot_control_module* module);
// Methods from ::android::hardware::boot::V1_0::IBootControl follow.
unsigned int getNumberSlots();
unsigned int getCurrentSlot();
int markBootSuccessful();
int setActiveBootSlot(unsigned int slot);
int setSlotAsUnbootable(unsigned int slot);
BoolResult isSlotBootable(unsigned int slot);
BoolResult isSlotMarkedSuccessful(unsigned int slot);
std::string getSuffix(unsigned int slot);
private:
boot_control_module* mModule;
};
#endif // ANDROID_HARDWARE_BOOT_V1_0_BOOTCONTROL_H

15
CMakeLists.txt
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@ -1,15 +0,0 @@
cmake_minimum_required(VERSION 3.10)
# set the project name
project(qbootctl)
set(BootCtrl_Files BootControl.cpp
boot_control_impl_qcom.cpp
gpt-utils.cpp)
include_directories(include)
# add the executable
add_executable(qbootctl ${BootCtrl_Files})
target_link_libraries(qbootctl libz.so)

26
README.md
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@ -1,7 +1,29 @@
Qualcomm bootctl HAL for Linux
# Qualcomm bootctl HAL for Linux
This HAL was pulled from AOSP source code and bastardised to build and run on a musl/glibc system. This may or may not render any hardware you run it on unusable, you have been warned.
# Dependencies
## Dependencies
* zlib-dev
## Usage
```
qbootctl: qcom bootctrl HAL port for Linux
-------------------------------------------
qbootctl [-c|-m|-s|-u|-b|-n|-x] [SLOT]
<no args> dump slot info (default)
-h this help text
-c get the current slot
-b SLOT check if SLOT is marked as bootable
-n SLOT check if SLOT is marked as successful
-x [SLOT] get the slot suffix for SLOT (default: current)
-s SLOT set to active slot to SLOT
-m [SLOT] mark a boot as successful (default: current)
-u [SLOT] mark SLOT as unbootable (default: current)
```
## Debugging
Set `DEBUG` to 1 in `utils.h` to enable debug logging.

136
boot_control.h
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/*
* Copyright (C) 2015 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.
*/
#ifndef ANDROID_INCLUDE_HARDWARE_BOOT_CONTROL_H
#define ANDROID_INCLUDE_HARDWARE_BOOT_CONTROL_H
#define BOOT_CONTROL_MODULE_API_VERSION_0_1 HARDWARE_MODULE_API_VERSION(0, 1)
/**
* The id of this module
*/
#define BOOT_CONTROL_HARDWARE_MODULE_ID "bootctrl"
/*
* The Boot Control HAL is designed to allow for managing sets of redundant
* partitions, called slots, that can be booted from independantly. Slots
* are sets of partitions whose names differ only by a given suffix.
* They are identified here by a 0 indexed number, and associated with their
* suffix, which can be appended to the base name for any particular partition
* to find the one associated with that slot. The bootloader must pass the suffix
* of the currently active slot either through a kernel command line property at
* androidboot.slot_suffix, or the device tree at /firmware/android/slot_suffix.
* The primary use of this set up is to allow for background updates while the
* device is running, and to provide a fallback in the event that the update fails.
*/
/**
* Every hardware module must have a data structure named HAL_MODULE_INFO_SYM
* and the fields of this data structure must begin with hw_module_t
* followed by module specific information.
*/
struct boot_control_module {
/*
* (*init)() perform any initialization tasks needed for the HAL.
* This is called only once.
*/
void (*init)(struct boot_control_module *module);
/*
* (*getNumberSlots)() returns the number of available slots.
* For instance, a system with a single set of partitions would return
* 1, a system with A/B would return 2, A/B/C -> 3...
*/
unsigned (*getNumberSlots)(struct boot_control_module *module);
/*
* (*getCurrentSlot)() returns the value letting the system know
* whether the current slot is A or B. The meaning of A and B is
* left up to the implementer. It is assumed that if the current slot
* is A, then the block devices underlying B can be accessed directly
* without any risk of corruption.
* The returned value is always guaranteed to be strictly less than the
* value returned by getNumberSlots. Slots start at 0 and
* finish at getNumberSlots() - 1
*/
unsigned (*getCurrentSlot)(struct boot_control_module *module);
/*
* (*markBootSuccessful)() marks the current slot
* as having booted successfully
*
* Returns 0 on success, -errno on error.
*/
int (*markBootSuccessful)(struct boot_control_module *module);
/*
* (*setActiveBootSlot)() marks the slot passed in parameter as
* the active boot slot (see getCurrentSlot for an explanation
* of the "slot" parameter). This overrides any previous call to
* setSlotAsUnbootable.
* Returns 0 on success, -errno on error.
*/
int (*setActiveBootSlot)(struct boot_control_module *module, unsigned slot);
/*
* (*setSlotAsUnbootable)() marks the slot passed in parameter as
* an unbootable. This can be used while updating the contents of the slot's
* partitions, so that the system will not attempt to boot a known bad set up.
* Returns 0 on success, -errno on error.
*/
int (*setSlotAsUnbootable)(struct boot_control_module *module, unsigned slot);
/*
* (*isSlotBootable)() returns if the slot passed in parameter is
* bootable. Note that slots can be made unbootable by both the
* bootloader and by the OS using setSlotAsUnbootable.
* Returns 1 if the slot is bootable, 0 if it's not, and -errno on
* error.
*/
int (*isSlotBootable)(struct boot_control_module *module, unsigned slot);
/*
* (*getSuffix)() returns the string suffix used by partitions that
* correspond to the slot number passed in parameter. The returned string
* is expected to be statically allocated and not need to be freed.
* Returns NULL if slot does not match an existing slot.
*/
const char* (*getSuffix)(struct boot_control_module *module, unsigned slot);
/*
* (*isSlotMarkedSucessful)() returns if the slot passed in parameter has
* been marked as successful using markBootSuccessful.
* Returns 1 if the slot has been marked as successful, 0 if it's
* not the case, and -errno on error.
*/
int (*isSlotMarkedSuccessful)(struct boot_control_module *module, unsigned slot);
/**
* Returns the active slot to boot into on the next boot. If
* setActiveBootSlot() has been called, the getter function should return
* the same slot as the one provided in the last setActiveBootSlot() call.
*/
unsigned (*getActiveBootSlot)(struct boot_control_module *module);
void* reserved[30];
};
extern const struct boot_control_module HAL_MODULE_INFO_SYM;
#endif // ANDROID_INCLUDE_HARDWARE_BOOT_CONTROL_H

202
gpt-utils.cpp
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@ -38,8 +38,6 @@
#include <errno.h>
#include <sys/stat.h>
#include <sys/ioctl.h>
#include <scsi/ufs/ioctl.h>
#include <scsi/ufs/ufs.h>
#include <unistd.h>
#include <linux/fs.h>
#include <limits.h>
@ -53,6 +51,7 @@
#include <endian.h>
#include <zlib.h>
#include "utils.h"
#include "gpt-utils.h"
@ -373,7 +372,7 @@ static int gpt2_set_boot_chain(int fd, enum boot_chain boot)
if (r)
goto EXIT;
crc = 0; // crc32(0, pentries, pentries_array_size);
crc = crc32(0, pentries, pentries_array_size);
if (GET_4_BYTES(gpt_header + PARTITION_CRC_OFFSET) != crc) {
fprintf(stderr, "Primary GPT partition entries array CRC invalid\n");
r = -1;
@ -396,12 +395,12 @@ static int gpt2_set_boot_chain(int fd, enum boot_chain boot)
goto EXIT;
}
crc = 0; // crc32(0, pentries, pentries_array_size);
crc = crc32(0, pentries, pentries_array_size);
PUT_4_BYTES(gpt_header + PARTITION_CRC_OFFSET, crc);
/* header CRC is calculated with this field cleared */
PUT_4_BYTES(gpt_header + HEADER_CRC_OFFSET, 0);
crc = 0; // crc32(0, gpt_header, gpt_header_size);
crc = crc32(0, gpt_header, gpt_header_size);
PUT_4_BYTES(gpt_header + HEADER_CRC_OFFSET, crc);
/* Write the modified GPT header back to block dev */
@ -542,7 +541,7 @@ static int gpt_set_state(int fd, enum gpt_instance gpt, enum gpt_state state)
/* header CRC is calculated with this field cleared */
PUT_4_BYTES(gpt_header + HEADER_CRC_OFFSET, 0);
crc = 0; // crc32(0, gpt_header, gpt_header_size);
crc = crc32(0, gpt_header, gpt_header_size);
PUT_4_BYTES(gpt_header + HEADER_CRC_OFFSET, crc);
if (blk_rw(fd, 1, gpt_header_offset, gpt_header, blk_size)) {
@ -556,127 +555,9 @@ error:
return -1;
}
int get_scsi_node_from_bootdevice(const char *bootdev_path,
char *sg_node_path,
size_t buf_size)
{
char sg_dir_path[PATH_MAX] = {0};
char real_path[PATH_MAX] = {0};
DIR *scsi_dir = NULL;
struct dirent *de;
int node_found = 0;
if (!bootdev_path || !sg_node_path) {
fprintf(stderr, "%s : invalid argument\n",
__func__);
goto error;
}
if (realpath(bootdev_path, real_path) < 0) {
fprintf(stderr, "failed to resolve link for %s(%s)\n",
bootdev_path,
strerror(errno));
goto error;
}
if(strlen(real_path) < PATH_TRUNCATE_LOC + 1){
fprintf(stderr, "Unrecognized path :%s:\n",
real_path);
goto error;
}
//For the safe side in case there are additional partitions on
//the XBL lun we truncate the name.
real_path[PATH_TRUNCATE_LOC] = '\0';
if(strlen(real_path) < LUN_NAME_START_LOC + 1){
fprintf(stderr, "Unrecognized truncated path :%s:\n",
real_path);
goto error;
}
// snprintf(sg_node_path, PATH_MAX, "%s", real_path);
// return 0;
//This will give us /dev/disk/sdb/device/scsi_generic
//which contains a file sgY whose name gives us the path
//to /dev/sgY which we return
snprintf(sg_dir_path, sizeof(sg_dir_path) - 1,
"/sys/block/%s/device/scsi_generic",
&real_path[LUN_NAME_START_LOC]);
scsi_dir = opendir(sg_dir_path);
if (!scsi_dir) {
fprintf(stderr, "%s : Failed to open %s(%s)\n",
__func__,
sg_dir_path,
strerror(errno));
goto error;
}
while((de = readdir(scsi_dir))) {
if (de->d_name[0] == '.')
continue;
else if (!strncmp(de->d_name, "sg\n", 2)) {
snprintf(sg_node_path,
buf_size -1,
"/dev/%s",
de->d_name);
fprintf(stderr, "%s:scsi generic node is :%s:\n",
__func__,
sg_node_path);
node_found = 1;
break;
}
}
if(!node_found) {
fprintf(stderr,"%s: Unable to locate scsi generic node\n",
__func__);
goto error;
}
closedir(scsi_dir);
return 0;
error:
if (scsi_dir)
closedir(scsi_dir);
return -1;
}
int set_boot_lun(char *sg_dev, uint8_t boot_lun_id)
{
int fd = -1;
int rc;
struct ufs_ioctl_query_data *data = NULL;
size_t ioctl_data_size = sizeof(struct ufs_ioctl_query_data) + UFS_ATTR_DATA_SIZE;
data = (struct ufs_ioctl_query_data*)malloc(ioctl_data_size);
if (!data) {
fprintf(stderr, "%s: Failed to alloc query data struct\n",
__func__);
goto error;
}
printf("%s(): sg_dev = %s\n", __func__, sg_dev);
memset(data, 0, ioctl_data_size);
data->opcode = UPIU_QUERY_OPCODE_WRITE_ATTR;
data->idn = QUERY_ATTR_IDN_BOOT_LU_EN;
data->buf_size = UFS_ATTR_DATA_SIZE;
data->buffer[0] = boot_lun_id;
fd = open(sg_dev, O_RDWR);
if (fd < 0) {
fprintf(stderr, "%s: Failed to open %s(%s)\n",
__func__,
sg_dev,
strerror(errno));
goto error;
}
rc = ioctl(fd, UFS_IOCTL_QUERY, data);
if (rc) {
fprintf(stderr, "%s: UFS query ioctl failed(%s)\n",
__func__,
strerror(errno));
goto error;
}
close(fd);
free(data);
return 0;
error:
if (fd >= 0)
close(fd);
if (data)
free(data);
return -1;
}
// Defined in ufs-bsg.cpp
int32_t set_boot_lun(uint8_t lun_id);
//Swtich betwieen using either the primary or the backup
//boot LUN for boot. This is required since UFS boot partitions
@ -698,11 +579,12 @@ error:
int gpt_utils_set_xbl_boot_partition(enum boot_chain chain)
{
struct stat st;
///sys/block/sdX/device/scsi_generic/
char sg_dev_node[PATH_MAX] = {0};
uint8_t boot_lun_id = 0;
const char *boot_dev = NULL;
(void)st;
(void)boot_dev;
if (chain == BACKUP_BOOT) {
boot_lun_id = BOOT_LUN_B_ID;
if (!stat(XBL_BACKUP, &st))
@ -740,17 +622,10 @@ int gpt_utils_set_xbl_boot_partition(enum boot_chain chain)
strerror(errno));
goto error;
}
fprintf(stderr, "%s: setting %s lun as boot lun\n",
__func__,
LOGD("%s: setting %s lun as boot lun\n", __func__,
boot_dev);
if (get_scsi_node_from_bootdevice(boot_dev,
sg_dev_node,
sizeof(sg_dev_node))) {
fprintf(stderr, "%s: Failed to get scsi node path for xblbak\n",
__func__);
goto error;
}
if (set_boot_lun(sg_dev_node, boot_lun_id)) {
if (set_boot_lun(boot_lun_id)) {
fprintf(stderr, "%s: Failed to set xblbak as boot partition\n",
__func__);
goto error;
@ -1050,7 +925,7 @@ int prepare_boot_update(enum boot_update_stage stage)
if (stat(buf, &ufs_dir_stat)) {
continue;
}
if (realpath(buf, real_path) < 0)
if (!realpath(buf, real_path))
{
fprintf(stderr, "%s: realpath error. Skipping %s\n",
__func__,
@ -1097,11 +972,13 @@ static int get_dev_path_from_partition_name(const char *partname,
size_t buflen)
{
struct stat st;
int rc;
char path[PATH_MAX] = {0};
(void)st;
if (!partname || !buf || buflen < ((PATH_TRUNCATE_LOC) + 1)) {
fprintf(stderr, "%s: Invalid argument\n", __func__);
goto error;
return -1;
}
if (gpt_utils_is_ufs_device()) {
//Need to find the lun that holds partition partname
@ -1110,25 +987,20 @@ static int get_dev_path_from_partition_name(const char *partname,
BOOT_DEV_DIR,
partname);
// if (rc = stat(path, &st)) {
// printf("stat failed: errno=%d\n", errno);
// LOGD("stat failed: errno=%d\n", errno);
// goto error;
// }
buf = realpath(path, buf);
if (!buf)
{
printf("realpath failed\n");
goto error;
return -1;
} else {
buf[PATH_TRUNCATE_LOC] = '\0';
}
printf("PATH: %s, realpath: %s\n", path, buf);
} else {
snprintf(buf, buflen, "/dev/mmcblk0");
}
return 0;
error:
return -1;
}
int gpt_utils_get_partition_map(vector<string>& ptn_list,
@ -1199,7 +1071,7 @@ static int gpt_set_header(uint8_t *gpt_header, int fd,
goto error;
}
block_size = gpt_get_block_size(fd);
printf("%s: Block size is : %d\n", __func__, block_size);
LOGD("%s: Block size is : %d\n", __func__, block_size);
if (block_size == 0) {
fprintf(stderr, "%s: Failed to get block size\n", __func__);
goto error;
@ -1212,7 +1084,7 @@ static int gpt_set_header(uint8_t *gpt_header, int fd,
fprintf(stderr, "%s: Failed to get gpt header offset\n",__func__);
goto error;
}
printf("%s: Writing back header to offset %ld\n", __func__,
LOGD("%s: Writing back header to offset %ld\n", __func__,
gpt_header_offset);
if (blk_rw(fd, 1, gpt_header_offset, gpt_header, block_size)) {
fprintf(stderr, "%s: Failed to write back GPT header\n", __func__);
@ -1359,16 +1231,16 @@ static int gpt_set_pentry_arr(uint8_t *hdr, int fd, uint8_t* arr)
__func__);
goto error;
}
printf("%s : Block size is %d\n", __func__, block_size);
LOGD("%s : Block size is %d\n", __func__, block_size);
pentries_start = GET_8_BYTES(hdr + PENTRIES_OFFSET) * block_size;
pentry_size = GET_4_BYTES(hdr + PENTRY_SIZE_OFFSET);
pentries_arr_size =
GET_4_BYTES(hdr + PARTITION_COUNT_OFFSET) * pentry_size;
printf("%s: Writing partition entry array of size %d to offset %" PRIu64 "\n",
LOGD("%s: Writing partition entry array of size %d to offset %" PRIu64 "\n",
__func__,
pentries_arr_size,
pentries_start);
printf("pentries_start: %lu\n", pentries_start);
LOGD("pentries_start: %lu\n", pentries_start);
rc = blk_rw(fd, 1,
pentries_start,
arr,
@ -1436,13 +1308,13 @@ int gpt_disk_get_disk_info(const char *dev, struct gpt_disk *dsk)
}
gpt_header_size = GET_4_BYTES(disk->hdr + HEADER_SIZE_OFFSET);
// FIXME: pointer offsets crc bleh
disk->hdr_crc = 0; //crc32(0, disk->hdr, gpt_header_size);
disk->hdr_crc = crc32(0, disk->hdr, gpt_header_size);
disk->hdr_bak = gpt_get_header(dev, PRIMARY_GPT);
if (!disk->hdr_bak) {
fprintf(stderr, "%s: Failed to get backup header\n", __func__);
goto error;
}
disk->hdr_bak_crc = 0; //crc32(0, disk->hdr_bak, gpt_header_size);
disk->hdr_bak_crc = crc32(0, disk->hdr_bak, gpt_header_size);
//Descriptor for the block device. We will use this for further
//modifications to the partition table
@ -1522,13 +1394,13 @@ int gpt_disk_update_crc(struct gpt_disk *disk)
goto error;
}
//Recalculate the CRC of the primary partiton array
disk->pentry_arr_crc = 0; // crc32(0,
//disk->pentry_arr,
//disk->pentry_arr_size);
disk->pentry_arr_crc = crc32(0,
disk->pentry_arr,
disk->pentry_arr_size);
//Recalculate the CRC of the backup partition array
disk->pentry_arr_bak_crc = 0; // crc32(0,
//disk->pentry_arr_bak,
//disk->pentry_arr_size);
disk->pentry_arr_bak_crc = crc32(0,
disk->pentry_arr_bak,
disk->pentry_arr_size);
//Update the partition CRC value in the primary GPT header
PUT_4_BYTES(disk->hdr + PARTITION_CRC_OFFSET, disk->pentry_arr_crc);
//Update the partition CRC value in the backup GPT header
@ -1539,8 +1411,8 @@ int gpt_disk_update_crc(struct gpt_disk *disk)
//Header CRC is calculated with its own CRC field set to 0
PUT_4_BYTES(disk->hdr + HEADER_CRC_OFFSET, 0);
PUT_4_BYTES(disk->hdr_bak + HEADER_CRC_OFFSET, 0);
disk->hdr_crc = 0; // crc32(0, disk->hdr, gpt_header_size);
disk->hdr_bak_crc = 0; // crc32(0, disk->hdr_bak, gpt_header_size);
disk->hdr_crc = crc32(0, disk->hdr, gpt_header_size);
disk->hdr_bak_crc = crc32(0, disk->hdr_bak, gpt_header_size);
PUT_4_BYTES(disk->hdr + HEADER_CRC_OFFSET, disk->hdr_crc);
PUT_4_BYTES(disk->hdr_bak + HEADER_CRC_OFFSET, disk->hdr_bak_crc);
return 0;
@ -1564,14 +1436,14 @@ int gpt_disk_commit(struct gpt_disk *disk)
strerror(errno));
goto error;
}
printf("%s: Writing back primary GPT header\n", __func__);
LOGD("%s: Writing back primary GPT header\n", __func__);
//Write the primary header
if(gpt_set_header(disk->hdr, fd, PRIMARY_GPT) != 0) {
fprintf(stderr, "%s: Failed to update primary GPT header\n",
__func__);
goto error;
}
printf("%s: Writing back primary partition array\n", __func__);
LOGD("%s: Writing back primary partition array\n", __func__);
//Write back the primary partition array
if (gpt_set_pentry_arr(disk->hdr, fd, disk->pentry_arr)) {
fprintf(stderr, "%s: Failed to write primary GPT partition arr\n",

30
include/scsi/ufs/ioctl.h
Unescape View File

@ -1,30 +0,0 @@
/****************************************************************************
****************************************************************************
***
*** This header was automatically generated from a Linux kernel header
*** of the same name, to make information necessary for userspace to
*** call into the kernel available to libc. It contains only constants,
*** structures, and macros generated from the original header, and thus,
*** contains no copyrightable information.
***
*** To edit the content of this header, modify the corresponding
*** source file (e.g. under external/kernel-headers/original/) then
*** run bionic/libc/kernel/tools/update_all.py
***
*** Any manual change here will be lost the next time this script will
*** be run. You've been warned!
***
****************************************************************************
****************************************************************************/
#ifndef UAPI_UFS_IOCTL_H_
#define UAPI_UFS_IOCTL_H_
#include <linux/types.h>
#define UFS_IOCTL_QUERY 0x5388
struct ufs_ioctl_query_data {
__u32 opcode;
__u8 idn;
__u16 buf_size;
__u8 buffer[0];
};
#endif

86
include/scsi/ufs/ufs.h
Unescape View File

@ -1,86 +0,0 @@
/****************************************************************************
****************************************************************************
***
*** This header was automatically generated from a Linux kernel header
*** of the same name, to make information necessary for userspace to
*** call into the kernel available to libc. It contains only constants,
*** structures, and macros generated from the original header, and thus,
*** contains no copyrightable information.
***
*** To edit the content of this header, modify the corresponding
*** source file (e.g. under external/kernel-headers/original/) then
*** run bionic/libc/kernel/tools/update_all.py
***
*** Any manual change here will be lost the next time this script will
*** be run. You've been warned!
***
****************************************************************************
****************************************************************************/
#ifndef UAPI_UFS_H_
#define UAPI_UFS_H_
#define MAX_QUERY_IDN 0x18
enum flag_idn {
QUERY_FLAG_IDN_FDEVICEINIT = 0x01,
QUERY_FLAG_IDN_PERMANENT_WPE = 0x02,
QUERY_FLAG_IDN_PWR_ON_WPE = 0x03,
QUERY_FLAG_IDN_BKOPS_EN = 0x04,
QUERY_FLAG_IDN_RESERVED1 = 0x05,
QUERY_FLAG_IDN_PURGE_ENABLE = 0x06,
QUERY_FLAG_IDN_RESERVED2 = 0x07,
QUERY_FLAG_IDN_FPHYRESOURCEREMOVAL = 0x08,
QUERY_FLAG_IDN_BUSY_RTC = 0x09,
QUERY_FLAG_IDN_MANUAL_GC_CONT = 0x0E,
};
enum attr_idn {
QUERY_ATTR_IDN_BOOT_LU_EN = 0x00,
QUERY_ATTR_IDN_RESERVED = 0x01,
QUERY_ATTR_IDN_POWER_MODE = 0x02,
QUERY_ATTR_IDN_ACTIVE_ICC_LVL = 0x03,
QUERY_ATTR_IDN_OOO_DATA_EN = 0x04,
QUERY_ATTR_IDN_BKOPS_STATUS = 0x05,
QUERY_ATTR_IDN_PURGE_STATUS = 0x06,
QUERY_ATTR_IDN_MAX_DATA_IN = 0x07,
QUERY_ATTR_IDN_MAX_DATA_OUT = 0x08,
QUERY_ATTR_IDN_DYN_CAP_NEEDED = 0x09,
QUERY_ATTR_IDN_REF_CLK_FREQ = 0x0A,
QUERY_ATTR_IDN_CONF_DESC_LOCK = 0x0B,
QUERY_ATTR_IDN_MAX_NUM_OF_RTT = 0x0C,
QUERY_ATTR_IDN_EE_CONTROL = 0x0D,
QUERY_ATTR_IDN_EE_STATUS = 0x0E,
QUERY_ATTR_IDN_SECONDS_PASSED = 0x0F,
QUERY_ATTR_IDN_CNTX_CONF = 0x10,
QUERY_ATTR_IDN_CORR_PRG_BLK_NUM = 0x11,
QUERY_ATTR_IDN_MANUAL_GC_STATUS = 0x17,
};
#define QUERY_ATTR_IDN_BOOT_LU_EN_MAX 0x02
enum desc_idn {
QUERY_DESC_IDN_DEVICE = 0x0,
QUERY_DESC_IDN_CONFIGURAION = 0x1,
QUERY_DESC_IDN_UNIT = 0x2,
QUERY_DESC_IDN_RFU_0 = 0x3,
QUERY_DESC_IDN_INTERCONNECT = 0x4,
QUERY_DESC_IDN_STRING = 0x5,
QUERY_DESC_IDN_RFU_1 = 0x6,
QUERY_DESC_IDN_GEOMETRY = 0x7,
QUERY_DESC_IDN_POWER = 0x8,
QUERY_DESC_IDN_HEALTH = 0x9,
QUERY_DESC_IDN_RFU_2 = 0xA,
QUERY_DESC_IDN_MAX,
};
enum query_opcode {
UPIU_QUERY_OPCODE_NOP = 0x0,
UPIU_QUERY_OPCODE_READ_DESC = 0x1,
UPIU_QUERY_OPCODE_WRITE_DESC = 0x2,
UPIU_QUERY_OPCODE_READ_ATTR = 0x3,
UPIU_QUERY_OPCODE_WRITE_ATTR = 0x4,
UPIU_QUERY_OPCODE_READ_FLAG = 0x5,
UPIU_QUERY_OPCODE_SET_FLAG = 0x6,
UPIU_QUERY_OPCODE_CLEAR_FLAG = 0x7,
UPIU_QUERY_OPCODE_TOGGLE_FLAG = 0x8,
UPIU_QUERY_OPCODE_MAX,
};
#define UPIU_QUERY_OPCODE_HIGH_HPB 0x5500
#define UPIU_QUERY_OPCODE_HIGH(opcode) ((opcode) >> 16)
#define UPIU_QUERY_OPCODE_LOW(opcode) ((opcode) & 0xffff)
#endif

22
meson.build
Unescape View File

@ -0,0 +1,22 @@
project('qbootctl', 'cpp')
deps = [
dependency('zlib'),
]
src = [
'qbootctl.cpp',
'gpt-utils.cpp',
'ufs-bsg.cpp',
]
inc = [
include_directories('.'),
]
executable('qbootctl', src,
include_directories: inc,
dependencies: deps,
install: true,
c_args: [],
)

414
boot_control_impl_qcom.cpp → qbootctl.cpp
Unescape View File

@ -1,5 +1,6 @@
/*
* Copyright (c) 2016, The Linux Foundation. All rights reserved.
* Copyright (C) 2021-2022 Caleb Connolly <caleb@connolly.tech>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
@ -41,7 +42,7 @@
#include <fcntl.h>
#include <limits.h>
#include "boot_control.h"
#include "utils.h"
#include "gpt-utils.h"
#define BOOTDEV_DIR "/dev/disk/by-partlabel"
@ -72,27 +73,41 @@ enum part_attr_type {
ATTR_SLOT_ACTIVE = 0,
ATTR_BOOT_SUCCESSFUL,
ATTR_UNBOOTABLE,
ATTR_BOOTABLE,
};
void get_kernel_cmdline_arg(const char * arg, const char* buf, const char* def)
void get_kernel_cmdline_arg(const char * arg, char* buf, const char* def)
{
// int fd = open("/proc/cmdline\n", O_RDONLY);
// char buf[MAX_CMDLINE_SIZE];
// int rc = read(fd, &buf, MAX_CMDLINE_SIZE);
// close(fd);
// std::string cmdline(buf);
// std::regex rgx(std::string(arg).append("=.+"))
printf("%s\n", __func__);
buf = def;
int fd;
char pcmd[MAX_CMDLINE_SIZE];
char *val, *found, *ptr = buf;
fd = open("/proc/cmdline", O_RDONLY);
int rc = read(fd, pcmd, MAX_CMDLINE_SIZE);
if (rc < 0) {
fprintf(stderr, "Couldn't open /proc/cmdline: %d (%s)\n", rc, strerror(errno));
goto error;
}
close(fd);
found = strstr(pcmd, arg);
if (!found || !(val = strstr(found, "="))) {
fprintf(stderr, "Couldn't find cmdline arg: '%s'\n", arg);
goto error;
}
val++;
// no this doesn't handle quotes lol
while (*val != ' ') {
*ptr++ = *val++;
}
void boot_control_init(struct boot_control_module *module)
{
printf("%s\n", __func__);
if (!module) {
fprintf(stderr, "Invalid argument passed to %s\n", __func__);
return;
error:
strcpy(buf, def);
}
void boot_control_init()
{
return;
}
@ -100,7 +115,6 @@ void boot_control_init(struct boot_control_module *module)
static int get_partition_attribute(char *partname,
enum part_attr_type part_attr)
{
printf("%s\n", __func__);
struct gpt_disk *disk = NULL;
uint8_t *pentry = NULL;
int retval = -1;
@ -112,7 +126,6 @@ static int get_partition_attribute(char *partname,
fprintf(stderr, "%s: Failed to alloc disk struct\n", __func__);
goto error;
}
printf("gpt_disk_get_disk_info\n");
if (gpt_disk_get_disk_info(partname, disk)) {
fprintf(stderr, "%s: Failed to get disk info\n", __func__);
goto error;
@ -125,16 +138,16 @@ static int get_partition_attribute(char *partname,
goto error;
}
attr = pentry + AB_FLAG_OFFSET;
printf("get_partition_attribute() partname = %s, attr = 0x%x\n", partname, *attr);
LOGD("get_partition_attribute() partname = %s, attr = 0x%x\n", partname, *attr);
if (part_attr == ATTR_SLOT_ACTIVE) {
retval = !!(*attr & AB_PARTITION_ATTR_SLOT_ACTIVE);
printf("ATTR_SLOT_ACTIVE, retval = %d\n", retval);
LOGD("ATTR_SLOT_ACTIVE, retval = %d\n", retval);
} else if (part_attr == ATTR_BOOT_SUCCESSFUL) {
retval = !!(*attr & AB_PARTITION_ATTR_BOOT_SUCCESSFUL);
printf("AB_PARTITION_ATTR_BOOT_SUCCESSFUL, retval = %d\n", retval);
LOGD("AB_PARTITION_ATTR_BOOT_SUCCESSFUL, retval = %d\n", retval);
} else if (part_attr == ATTR_UNBOOTABLE) {
retval = !!(*attr & AB_PARTITION_ATTR_UNBOOTABLE);
printf("AB_PARTITION_ATTR_UNBOOTABLE, retval = %d\n", retval);
LOGD("AB_PARTITION_ATTR_UNBOOTABLE, retval = %d\n", retval);
} else {
retval = -1;
}
@ -161,9 +174,8 @@ static int update_slot_attribute(const char *slot,
uint8_t *attr = NULL;
uint8_t *attr_bak = NULL;
char partName[MAX_GPT_NAME_SIZE + 1] = {0};
const char ptn_list[][MAX_GPT_NAME_SIZE] = { AB_PTN_LIST };
const char ptn_list[][MAX_GPT_NAME_SIZE - 1] = { AB_PTN_LIST };
int slot_name_valid = 0;
printf("%s\n", __func__);
if (!slot) {
fprintf(stderr, "%s: Invalid argument\n", __func__);
goto error;
@ -182,30 +194,30 @@ static int update_slot_attribute(const char *slot,
memset(buf, '\0', sizeof(buf));
//Check if A/B versions of this ptn exist
snprintf(buf, sizeof(buf) - 1,
"%s/%s%s\n",
"%s/%s%s",
BOOT_DEV_DIR,
ptn_list[i],
AB_SLOT_A_SUFFIX
);
if (stat(buf, &st)) {
if (stat(buf, &st) < 0) {
//partition does not have _a version
continue;
}
memset(buf, '\0', sizeof(buf));
snprintf(buf, sizeof(buf) - 1,
"%s/%s%s\n",
"%s/%s%s",
BOOT_DEV_DIR,
ptn_list[i],
AB_SLOT_B_SUFFIX
);
if (stat(buf, &st)) {
//partition does not have _a version
if (stat(buf, &st) < 0) {
//partition does not have _b version
continue;
}
memset(partName, '\0', sizeof(partName));
snprintf(partName,
sizeof(partName) - 1,
"%s%s\n",
"%s%s",
ptn_list[i],
slot);
disk = gpt_disk_alloc();
@ -230,18 +242,27 @@ static int update_slot_attribute(const char *slot,
goto error;
}
attr = pentry + AB_FLAG_OFFSET;
LOGD("%s: got pentry for part '%s': 0x%lx (at flags: 0x%x)\n", __func__, partName, *(uint64_t*)pentry, *attr);
attr_bak = pentry_bak + AB_FLAG_OFFSET;
if (ab_attr == ATTR_BOOT_SUCCESSFUL) {
switch(ab_attr) {
case ATTR_BOOT_SUCCESSFUL:
*attr = (*attr) | AB_PARTITION_ATTR_BOOT_SUCCESSFUL;
*attr_bak = (*attr_bak) |
AB_PARTITION_ATTR_BOOT_SUCCESSFUL;
} else if (ab_attr == ATTR_UNBOOTABLE) {
break;
case ATTR_UNBOOTABLE:
*attr = (*attr) | AB_PARTITION_ATTR_UNBOOTABLE;
*attr_bak = (*attr_bak) | AB_PARTITION_ATTR_UNBOOTABLE;
} else if (ab_attr == ATTR_SLOT_ACTIVE) {
break;
case ATTR_BOOTABLE:
*attr = (*attr) ^ AB_PARTITION_ATTR_UNBOOTABLE;
*attr_bak = (*attr_bak) ^ AB_PARTITION_ATTR_UNBOOTABLE;
break;
case ATTR_SLOT_ACTIVE:
*attr = (*attr) | AB_PARTITION_ATTR_SLOT_ACTIVE;
*attr_bak = (*attr) | AB_PARTITION_ATTR_SLOT_ACTIVE;
} else {
break;
default:
fprintf(stderr, "%s: Unrecognized attr\n", __func__);
goto error;
}
@ -267,15 +288,12 @@ error:
return -1;
}
unsigned get_number_slots(struct boot_control_module *module)
unsigned get_number_slots()
{
struct dirent *de = NULL;
DIR *dir_bootdev = NULL;
unsigned slot_count = 0;
if (!module) {
fprintf(stderr, "%s: Invalid argument\n", __func__);
goto error;
}
dir_bootdev = opendir(BOOTDEV_DIR);
if (!dir_bootdev) {
fprintf(stderr, "%s: Failed to open bootdev dir (%s)\n",
@ -301,16 +319,12 @@ error:
return 0;
}
static unsigned int get_current_slot(struct boot_control_module *module)
static unsigned int get_current_slot()
{
uint32_t num_slots = 0;
char bootSlotProp[MAX_CMDLINE_SIZE] = {'\0'};
unsigned i = 0;
if (!module) {
fprintf(stderr, "%s: Invalid argument\n", __func__);
goto error;
}
num_slots = get_number_slots(module);
num_slots = get_number_slots();
if (num_slots <= 1) {
//Slot 0 is the only slot around.
return 0;
@ -327,7 +341,7 @@ static unsigned int get_current_slot(struct boot_control_module *module)
if (!strncmp(bootSlotProp,
slot_suffix_arr[i],
strlen(slot_suffix_arr[i]))) {
printf("%s current_slot = %d\n", __func__, i);
//printf("%s current_slot = %d\n", __func__, i);
return i;
}
}
@ -338,13 +352,9 @@ error:
return 0;
}
static int boot_control_check_slot_sanity(struct boot_control_module *module,
unsigned slot)
static int boot_control_check_slot_sanity(unsigned slot)
{
printf("%s\n", __func__);
if (!module)
return -1;
uint32_t num_slots = get_number_slots(module);
uint32_t num_slots = get_number_slots();
if ((num_slots < 1) || (slot > num_slots - 1)) {
fprintf(stderr, "Invalid slot number");
return -1;
@ -353,29 +363,60 @@ static int boot_control_check_slot_sanity(struct boot_control_module *module,
}
int mark_boot_successful(struct boot_control_module *module)
int get_boot_attr(unsigned slot, enum part_attr_type attr)
{
printf("%s\n", __func__);
unsigned cur_slot = 0;
if (!module) {
fprintf(stderr, "%s: Invalid argument\n", __func__);
goto error;
char bootPartition[MAX_GPT_NAME_SIZE + 1] = {0};
if (boot_control_check_slot_sanity(slot) != 0) {
fprintf(stderr, "%s: Argument check failed\n", __func__);
return -1;
}
snprintf(bootPartition,
sizeof(bootPartition) - 1, "boot%s",
slot_suffix_arr[slot]);
return get_partition_attribute(bootPartition, attr);
}
int is_slot_bootable(unsigned slot)
{
int attr = 0;
attr = get_boot_attr(slot, ATTR_UNBOOTABLE);
if (attr >= 0)
return !attr;
return -1;
}
int mark_boot_successful(unsigned slot)
{
int successful = get_boot_attr(slot, ATTR_BOOT_SUCCESSFUL);
if (!is_slot_bootable(slot)) {
printf("SLOT %s: was marked unbootable, fixing this"
" (I hope you know what you're doing...)\n", slot_suffix_arr[slot]);
update_slot_attribute(slot_suffix_arr[slot],
ATTR_BOOTABLE);
}
cur_slot = get_current_slot(module);
if (update_slot_attribute(slot_suffix_arr[cur_slot],
if (successful) {
fprintf(stderr, "SLOT %s: already marked successful\n", slot_suffix_arr[slot]);
return -1;
}
if (update_slot_attribute(slot_suffix_arr[slot],
ATTR_BOOT_SUCCESSFUL)) {
goto error;
}
return 0;
error:
fprintf(stderr, "%s: Failed to mark boot successful\n", __func__);
fprintf(stderr, "SLOT %s: Failed to mark boot successful\n", slot_suffix_arr[slot]);
return -1;
}
const char *get_suffix(struct boot_control_module *module, unsigned slot)
const char *get_suffix(unsigned slot)
{
printf("%s\n", __func__);
if (boot_control_check_slot_sanity(module, slot) != 0)
if (boot_control_check_slot_sanity(slot) != 0)
return NULL;
else
return slot_suffix_arr[slot];
@ -386,7 +427,6 @@ const char *get_suffix(struct boot_control_module *module, unsigned slot)
//partition.
static struct gpt_disk* boot_ctl_get_disk_info(char *partition)
{
printf("%s\n", __func__);
struct gpt_disk *disk = NULL;
if (!partition)
return NULL;
@ -413,13 +453,13 @@ error:
static int boot_ctl_set_active_slot_for_partitions(vector<string> part_list,
unsigned slot)
{
printf("%s\n", __func__);
char buf[PATH_MAX] = {0};
struct gpt_disk *disk = NULL;
char slotA[MAX_GPT_NAME_SIZE + 1] = {0};
char slotB[MAX_GPT_NAME_SIZE + 1] = {0};
char active_guid[TYPE_GUID_SIZE + 1] = {0};
char inactive_guid[TYPE_GUID_SIZE + 1] = {0};
int rc;
//Pointer to the partition entry of current 'A' partition
uint8_t *pentryA = NULL;
uint8_t *pentryA_bak = NULL;
@ -429,34 +469,45 @@ static int boot_ctl_set_active_slot_for_partitions(vector<string> part_list,
struct stat st;
vector<string>::iterator partition_iterator;
LOGD("Marking slot %s as active:\n", slot_suffix_arr[slot]);
for (partition_iterator = part_list.begin();
partition_iterator != part_list.end();
partition_iterator++) {
//Chop off the slot suffix from the partition name to
//make the string easier to work with.
string prefix = *partition_iterator;
LOGD("Part: %s\n", prefix.c_str());
if (prefix.size() < (strlen(AB_SLOT_A_SUFFIX) + 1)) {
fprintf(stderr, "Invalid partition name: %s\n", prefix.c_str());
goto error;
}
prefix.resize(prefix.size() - strlen(AB_SLOT_A_SUFFIX));
//Check if A/B versions of this ptn exist
snprintf(buf, sizeof(buf) - 1, "%s/%s%s\n", BOOT_DEV_DIR,
snprintf(buf, sizeof(buf) - 1, "%s/%s%s", BOOT_DEV_DIR,
prefix.c_str(),
AB_SLOT_A_SUFFIX);
if (stat(buf, &st))
LOGD("\t_a Path: '%s'\n", buf);
rc = stat(buf, &st);
if (rc < 0) {
fprintf(stderr, "Failed to stat() path: %d: %s\n", rc, strerror(errno));
continue;
}
memset(buf, '\0', sizeof(buf));
snprintf(buf, sizeof(buf) - 1, "%s/%s%s\n", BOOT_DEV_DIR,
snprintf(buf, sizeof(buf) - 1, "%s/%s%s", BOOT_DEV_DIR,
prefix.c_str(),
AB_SLOT_B_SUFFIX);
if (stat(buf, &st))
LOGD("\t_b Path: '%s'\n", buf);
rc = stat(buf, &st);
if (rc < 0) {
fprintf(stderr, "Failed to stat() path: %d: %s\n", rc, strerror(errno));
continue;
}
memset(slotA, 0, sizeof(slotA));
memset(slotB, 0, sizeof(slotA));
snprintf(slotA, sizeof(slotA) - 1, "%s%s\n", prefix.c_str(),
snprintf(slotA, sizeof(slotA) - 1, "%s%s", prefix.c_str(),
AB_SLOT_A_SUFFIX);
snprintf(slotB, sizeof(slotB) - 1,"%s%s\n", prefix.c_str(),
snprintf(slotB, sizeof(slotB) - 1,"%s%s", prefix.c_str(),
AB_SLOT_B_SUFFIX);
//Get the disk containing the partitions that were passed in.
//All partitions passed in must lie on the same disk.
@ -478,6 +529,12 @@ static int boot_ctl_set_active_slot_for_partitions(vector<string> part_list,
prefix.c_str());
goto error;
}
LOGD("\tAB attr (A): 0x%x (backup: 0x%x)\n",
*(uint16_t*)(pentryA + AB_FLAG_OFFSET),
*(uint16_t*)(pentryA_bak + AB_FLAG_OFFSET));
LOGD("\tAB attr (B): 0x%x (backup: 0x%x)\n",
*(uint16_t*)(pentryB + AB_FLAG_OFFSET),
*(uint16_t*)(pentryB_bak + AB_FLAG_OFFSET));
memset(active_guid, '\0', sizeof(active_guid));
memset(inactive_guid, '\0', sizeof(inactive_guid));
if (get_partition_attribute(slotA, ATTR_SLOT_ACTIVE) == 1) {
@ -497,6 +554,8 @@ static int boot_ctl_set_active_slot_for_partitions(vector<string> part_list,
fprintf(stderr, "Both A & B are inactive..Aborting");
goto error;
}
// printf("\tActive GUID: %s\n", active_guid);
// printf("\tInactive GUID: %s\n", active_guid);
if (!strncmp(slot_suffix_arr[slot], AB_SLOT_A_SUFFIX,
strlen(AB_SLOT_A_SUFFIX))){
//Mark A as active in primary table
@ -522,14 +581,12 @@ static int boot_ctl_set_active_slot_for_partitions(vector<string> part_list,
fprintf(stderr, "%s: Unknown slot suffix!\n", __func__);
goto error;
}
if (disk) {
if (gpt_disk_update_crc(disk) != 0) {
fprintf(stderr, "%s: Failed to update gpt_disk crc\n",
__func__);
goto error;
}
}
}
//write updated content to disk
if (disk) {
if (gpt_disk_commit(disk)) {
@ -546,39 +603,26 @@ error:
return -1;
}
unsigned get_active_boot_slot(struct boot_control_module *module)
unsigned get_active_boot_slot()
{
printf("%s\n", __func__);
if (!module) {
fprintf(stderr, "%s: Invalid argument\n", __func__);
// The HAL spec requires that we return a number between
// 0 to num_slots - 1. Since something went wrong here we
// are just going to return the default slot.
return 0;
}
uint32_t num_slots = get_number_slots(module);
uint32_t num_slots = get_number_slots();
if (num_slots <= 1) {
//Slot 0 is the only slot around.
return 0;
}
for (uint32_t i = 0; i < num_slots; i++) {
char bootPartition[MAX_GPT_NAME_SIZE + 1] = {0};
snprintf(bootPartition, sizeof(bootPartition) - 1, "boot%s",
slot_suffix_arr[i]);
if (get_partition_attribute(bootPartition, ATTR_SLOT_ACTIVE) == 1) {
if (get_boot_attr(i, ATTR_SLOT_ACTIVE))
return i;
}
}
fprintf(stderr, "%s: Failed to find the active boot slot\n", __func__);
return 0;
}
int set_active_boot_slot(struct boot_control_module *module, unsigned slot)
int set_active_boot_slot(unsigned slot)
{
printf("%s\n", __func__);
map<string, vector<string>> ptn_map;
vector<string> ptn_vec;
const char ptn_list[][MAX_GPT_NAME_SIZE] = { AB_PTN_LIST };
@ -587,10 +631,11 @@ int set_active_boot_slot(struct boot_control_module *module, unsigned slot)
int is_ufs = gpt_utils_is_ufs_device();
map<string, vector<string>>::iterator map_iter;
if (boot_control_check_slot_sanity(module, slot)) {
if (boot_control_check_slot_sanity(slot)) {
fprintf(stderr, "%s: Bad arguments\n", __func__);
goto error;
}
//The partition list just contains prefixes(without the _a/_b) of the
//partitions that support A/B. In order to get the layout we need the
//actual names. To do this we append the slot suffix to every member
@ -650,10 +695,9 @@ error:
return -1;
}
int set_slot_as_unbootable(struct boot_control_module *module, unsigned slot)
int set_slot_as_unbootable(unsigned slot)
{
printf("%s\n", __func__);
if (boot_control_check_slot_sanity(module, slot) != 0) {
if (boot_control_check_slot_sanity(slot) != 0) {
fprintf(stderr, "%s: Argument check failed\n", __func__);
goto error;
}
@ -667,32 +711,12 @@ error:
return -1;
}
int is_slot_bootable(struct boot_control_module *module, unsigned slot)
int is_slot_marked_successful(unsigned slot)
{
printf("%s\n", __func__);
int attr = 0;
char bootPartition[MAX_GPT_NAME_SIZE + 1] = {0};
if (boot_control_check_slot_sanity(module, slot) != 0) {
fprintf(stderr, "%s: Argument check failed\n", __func__);
goto error;
}
snprintf(bootPartition,
sizeof(bootPartition) - 1, "boot%s",
slot_suffix_arr[slot]);
attr = get_partition_attribute(bootPartition, ATTR_UNBOOTABLE);
if (attr >= 0)
return !attr;
error:
return -1;
}
int is_slot_marked_successful(struct boot_control_module *module, unsigned slot)
{
int attr = 0;
char bootPartition[MAX_GPT_NAME_SIZE + 1] = {0};
if (boot_control_check_slot_sanity(module, slot) != 0) {
if (boot_control_check_slot_sanity(slot) != 0) {
fprintf(stderr, "%s: Argument check failed\n", __func__);
goto error;
}
@ -700,13 +724,14 @@ int is_slot_marked_successful(struct boot_control_module *module, unsigned slot)
sizeof(bootPartition) - 1,
"boot%s", slot_suffix_arr[slot]);
attr = get_partition_attribute(bootPartition, ATTR_BOOT_SUCCESSFUL);
printf("%s(): slot = %d, attr = 0x%x\n", __func__, slot, attr);
LOGD("%s: slot = %d, attr = 0x%x\n", __func__, slot, attr);
if (attr >= 0)
return attr;
error:
return -1;
}
/*
const struct boot_control_module HAL_MODULE_INFO_SYM = {
.init = boot_control_init,
.getNumberSlots = get_number_slots,
@ -719,3 +744,158 @@ const struct boot_control_module HAL_MODULE_INFO_SYM = {
.isSlotMarkedSuccessful = is_slot_marked_successful,
.getActiveBootSlot = get_active_boot_slot,
};
*/
struct slot_info {
bool active;
bool successful;
bool bootable;
};
int usage()
{
fprintf(stderr, "qbootctl: qcom bootctrl HAL port for Linux\n");
fprintf(stderr, "-------------------------------------------\n");
fprintf(stderr, "qbootctl [-c|-m|-s|-u|-b|-n|-x] [SLOT]\n\n");
fprintf(stderr, " <no args> dump slot info (default)\n");
fprintf(stderr, " -h this help text\n");
fprintf(stderr, " -c get the current slot\n");
fprintf(stderr, " -a get the active slot\n");
fprintf(stderr, " -b SLOT check if SLOT is marked as bootable\n");
fprintf(stderr, " -n SLOT check if SLOT is marked as successful\n");
fprintf(stderr, " -x [SLOT] get the slot suffix for SLOT (default: current)\n");
fprintf(stderr, " -s SLOT set to active slot to SLOT\n");
fprintf(stderr, " -m [SLOT] mark a boot as successful (default: current)\n");
fprintf(stderr, " -u [SLOT] mark SLOT as unbootable (default: current)\n");
return 1;
}
int get_slot_info(struct slot_info *slots) {
int rc;
uint32_t active_slot = get_active_boot_slot();
slots[active_slot].active = true;
for (size_t i = 0; i < 2; i++)
{
rc = is_slot_marked_successful(i);
if (rc < 0)
return rc;
slots[i].successful = rc;
rc = is_slot_bootable(i);
if (rc < 0)
return rc;
slots[i].bootable = rc;
}
return 0;
}
void dump_info() {
struct slot_info slots[2] = {{0}};
int current_slot = get_current_slot();
get_slot_info(slots);
printf("Current slot: %s\n", current_slot >= 0 ? slot_suffix_arr[current_slot] : "N/A");
for (size_t i = 0; i < 2; i++)
{
printf("SLOT %s:\n", slot_suffix_arr[i]);
printf("\tActive : %d\n", slots[i].active);
printf("\tSuccessful : %d\n", slots[i].successful);
printf("\tBootable : %d\n", slots[i].bootable);
}
}
int main (int argc, char **argv) {
int optflag;
int slot = -1;
int rc;
char *end;
switch(argc) {
case 1:
dump_info();
return 0;
case 2:
break;
case 3:
slot = (int)strtol(argv[2], &end, 10);
printf("Using slot %d\n", slot);
if (end == argv[2] || slot < 0 || slot > 1) {
fprintf(stderr, "Expected slot to be '0' or '1' not '%s'\n", argv[2]);
return 1;
}
break;
default:
return usage();
}
if (slot < 0)
slot = get_current_slot();
optflag = getopt(argc, argv, "hcmas:ub:n:x");
switch(optflag) {
case 'c':
slot = get_current_slot();
printf("Current slot: %s\n", slot_suffix_arr[slot]);
return 0;
case 'a':
slot = get_active_boot_slot();
printf("Active slot: %s\n", slot_suffix_arr[slot]);
return 0;
case 'b':
printf("SLOT %s: is %smarked bootable\n", slot_suffix_arr[slot],
is_slot_bootable(slot) == 1 ? "" : "not ");
return 0;
case 'n':
printf("SLOT %s: is %smarked successful\n", slot_suffix_arr[slot],
is_slot_marked_successful(slot) == 1 ? "" : "not ");
return 0;
case 'x':
printf("%s\n", slot_suffix_arr[slot]);
return 0;
case 's':
rc = set_active_boot_slot(slot);
if (rc < 0) {
fprintf(stderr, "SLOT %s: Failed to set active\n",
slot_suffix_arr[slot]);
return 1;
}
printf("SLOT %d: Set as active slot\n", slot);
return 0;
case 'm':
rc = mark_boot_successful(slot);
if (rc < 0)
return 1;
printf("SLOT %s: Marked boot successful\n", slot_suffix_arr[slot]);
return 0;
case 'u':
rc = set_slot_as_unbootable(slot);
if (rc < 0) {
fprintf(stderr, "SLOT %s: Failed to set as unbootable\n",
slot_suffix_arr[slot]);
return 1;
}
printf("SLOT %s: Set as unbootable\n", slot_suffix_arr[slot]);
return 0;
case 'h':
default:
usage();
return 0;
}
// printf("======= Current slot: %d\n", get_current_slot());
// printf("======= isslotbootable: a = %d, b = %d\n", is_slot_bootable(0),
// is_slot_bootable(1));
// printf("======= markBootSuccessful: %d\n", bootctl->markBootSuccessful());
// printf("======= isSlotMarkedSuccessful: a = %d, b = %d\n", bootctl->isSlotMarkedSuccessful(0),
// bootctl->isSlotMarkedSuccessful(1));
// printf("\n\n\n trying to switch to slot b: %d\n",
// bootctl->setActiveBootSlot(1));
return 0;
}

206
ufs-bsg.cpp
Unescape View File

@ -0,0 +1,206 @@
/*
* Copyright (c) 2020 The Linux Foundation. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials provided
* with the distribution.
* * Neither the name of The Linux Foundation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
* IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <linux/bsg.h>
#include <scsi/scsi_bsg_ufs.h>
#include <endian.h>
#include <dirent.h>
#include <string.h>
#include <stdio.h>
#include <stdlib.h>
#include <sys/ioctl.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <fcntl.h>
#include <errno.h>
#include "utils.h"
#include "ufs-bsg.h"
// FIXME: replace this with something that actually works
// static int get_ufs_bsg_dev(void)
// {
// DIR *dir;
// struct dirent *ent;
// int ret = -ENODEV;
// if ((dir = opendir ("/dev")) != NULL) {
// /* read all the files and directories within directory */
// while ((ent = readdir(dir)) != NULL) {
// if (!strcmp(ent->d_name, "bsg") ||
// !strcmp(ent->d_name, "ufs-bsg0")) {
// snprintf(ufs_bsg_dev, FNAME_SZ, "/dev/%s", ent->d_name);
// ret = 0;
// break;
// }
// }
// if (ret)
// fprintf(stderr, "could not find the ufs-bsg dev\n");
// closedir (dir);
// } else {
// /* could not open directory */
// fprintf(stderr, "could not open /dev (error no: %d)\n", errno);
// ret = -EINVAL;
// }
// return ret;
// }
int ufs_bsg_dev_open(void)
{
int ret;
if (!fd_ufs_bsg) {
fd_ufs_bsg = open(ufs_bsg_dev, O_RDWR);
ret = errno;
if (fd_ufs_bsg < 0) {
fprintf(stderr, "Unable to open %s (error no: %d)",
ufs_bsg_dev, errno);
fd_ufs_bsg = 0;
return ret;
}
}
return 0;
}
void ufs_bsg_dev_close(void)
{
if (fd_ufs_bsg) {
close(fd_ufs_bsg);
fd_ufs_bsg = 0;
}
}
static int ufs_bsg_ioctl(int fd, struct ufs_bsg_request *req,
struct ufs_bsg_reply *rsp, __u8 *buf, __u32 buf_len,
enum bsg_ioctl_dir dir)
{
int ret;
struct sg_io_v4 sg_io{};
sg_io.guard = 'Q';
sg_io.protocol = BSG_PROTOCOL_SCSI;
sg_io.subprotocol = BSG_SUB_PROTOCOL_SCSI_TRANSPORT;
sg_io.request_len = sizeof(*req);
sg_io.request = (__u64)req;
sg_io.response = (__u64)rsp;
sg_io.max_response_len = sizeof(*rsp);
if (dir == BSG_IOCTL_DIR_FROM_DEV) {
sg_io.din_xfer_len = buf_len;
sg_io.din_xferp = (__u64)(buf);
} else {
sg_io.dout_xfer_len = buf_len;
sg_io.dout_xferp = (__u64)(buf);
}
ret = ioctl(fd, SG_IO, &sg_io);
if (ret)
fprintf(stderr, "%s: Error from sg_io ioctl (return value: %d, error no: %d, reply result from LLD: %d\n)",
__func__, ret, errno, rsp->result);
if (sg_io.info || rsp->result) {
fprintf(stderr, "%s: Error from sg_io info (check sg info: device_status: 0x%x, transport_status: 0x%x, driver_status: 0x%x, reply result from LLD: %d\n)",
__func__, sg_io.device_status, sg_io.transport_status,
sg_io.driver_status, rsp->result);
ret = -EAGAIN;
}
return ret;
}
static void compose_ufs_bsg_query_req(struct ufs_bsg_request *req, __u8 func,
__u8 opcode, __u8 idn, __u8 index, __u8 sel,
__u16 length)
{
struct utp_upiu_header *hdr = &req->upiu_req.header;
struct utp_upiu_query *qr = &req->upiu_req.qr;
req->msgcode = UTP_UPIU_QUERY_REQ;
hdr->dword_0 = DWORD(UTP_UPIU_QUERY_REQ, 0, 0, 0);
hdr->dword_1 = DWORD(0, func, 0, 0);
hdr->dword_2 = DWORD(0, 0, length >> 8, (__u8)length);
qr->opcode = opcode;
qr->idn = idn;
qr->index = index;
qr->selector = sel;
qr->length = htobe16(length);
}
static int ufs_query_attr(int fd, __u32 value,
__u8 func, __u8 opcode, __u8 idn,
__u8 index, __u8 sel)
{
struct ufs_bsg_request req{};
struct ufs_bsg_reply rsp{};
enum bsg_ioctl_dir dir = BSG_IOCTL_DIR_FROM_DEV;
int ret = 0;
if (opcode == QUERY_REQ_OP_WRITE_DESC || opcode == QUERY_REQ_OP_WRITE_ATTR)
dir = BSG_IOCTL_DIR_TO_DEV;
req.upiu_req.qr.value = htobe32(value);
compose_ufs_bsg_query_req(&req, func, opcode, idn, index, sel, 0);
ret = ufs_bsg_ioctl(fd, &req, &rsp, 0, 0, dir);
if (ret)
fprintf(stderr, "%s: Error from ufs_bsg_ioctl (return value: %d, error no: %d\n)",
__func__, ret, errno);
return ret;
}
int32_t set_boot_lun(__u8 lun_id)
{
int32_t ret;
__u32 boot_lun_id = lun_id;
// ret = get_ufs_bsg_dev();
// if (ret)
// return ret;
LOGD("Using UFS bsg device: %s\n", ufs_bsg_dev);
ret = ufs_bsg_dev_open();
if (ret)
return ret;
LOGD("Opened ufs bsg dev: %s\n", ufs_bsg_dev);
ret = ufs_query_attr(fd_ufs_bsg, boot_lun_id, QUERY_REQ_FUNC_STD_WRITE,
QUERY_REQ_OP_WRITE_ATTR, QUERY_ATTR_IDN_BOOT_LU_EN, 0, 0);
if (ret) {
fprintf(stderr, "Error requesting ufs attr idn %d via query ioctl (return value: %d, error no: %d)",
QUERY_ATTR_IDN_BOOT_LU_EN, ret, errno);
goto out;
}
out:
ufs_bsg_dev_close();
return ret;
}

95
ufs-bsg.h
Unescape View File

@ -0,0 +1,95 @@
#ifndef __RECOVERY_UFS_BSG_H__
#define __RECOVERY_UFS_BSG_H__
/*
* Copyright (c) 2020 The Linux Foundation. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials provided
* with the distribution.
* * Neither the name of The Linux Foundation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
* IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#define FNAME_SZ 64
#define SG_IO 0x2285
#define DWORD(b3, b2, b1, b0) htobe32((b3 << 24) | (b2 << 16) |\
(b1 << 8) | b0)
/* UFS BSG device node */
char ufs_bsg_dev[FNAME_SZ] = "/dev/bsg/ufs-bsg0";
int fd_ufs_bsg;
/* UPIU Transaction Codes */
enum {
UTP_UPIU_NOP_OUT = 0x00,
UTP_UPIU_COMMAND = 0x01,
UTP_UPIU_DATA_OUT = 0x02,
UTP_UPIU_TASK_REQ = 0x04,
UTP_UPIU_QUERY_REQ = 0x16,
};
/* UPIU Query Function field */
enum {
QUERY_REQ_FUNC_STD_READ = 0x01,
QUERY_REQ_FUNC_STD_WRITE = 0x81,
};
enum query_req_opcode {
QUERY_REQ_OP_READ_DESC = 0x1,
QUERY_REQ_OP_WRITE_DESC = 0x2,
QUERY_REQ_OP_READ_ATTR = 0x3,
QUERY_REQ_OP_WRITE_ATTR = 0x4,
QUERY_REQ_OP_READ_FLAG = 0x5,
QUERY_REQ_OP_SET_FLAG = 0x6,
QUERY_REQ_OP_CLEAR_FLAG = 0x7,
QUERY_REQ_OP_TOGGLE_FLAG = 0x8,
};
enum query_desc_idn {
QUERY_DESC_IDN_DEVICE = 0x0,
QUERY_DESC_IDN_UNIT = 0x2,
QUERY_DESC_IDN_GEOMETRY = 0x7,
};
enum query_desc_size {
QUERY_DESC_SIZE_DEVICE = 0x40,
QUERY_DESC_SIZE_GEOMETRY = 0x48,
QUERY_DESC_SIZE_UNIT = 0x23,
};
enum bsg_ioctl_dir {
BSG_IOCTL_DIR_TO_DEV,
BSG_IOCTL_DIR_FROM_DEV,
};
enum query_attr_idn {
QUERY_ATTR_IDN_BOOT_LU_EN = 0x00,
QUERY_ATTR_IDN_RESERVED = 0x01,
QUERY_ATTR_IDN_POWER_MODE = 0x02,
QUERY_ATTR_IDN_ACTIVE_ICC_LVL = 0x03,
};
#endif /* __RECOVERY_UFS_BSG_H__ */

13
utils.h
Unescape View File

@ -0,0 +1,13 @@
#ifndef __UTILS_H__
#define __UTILS_H__
// Enable debug logging
//#define DEBUG 1
#ifdef DEBUG
#define LOGD(fmt, ...) printf(fmt, ##__VA_ARGS__)
#else
#define LOGD(fmtn, ...)
#endif
#endif
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