blob: 5fcadcdf503d98f2f2b622ea0b124b03497af556 [file] [log] [blame]
// SPDX-License-Identifier: BSD-2-Clause
/*
* Copyright (C) 2016 The Android Open Source Project
*/
#include <common.h>
#include <command.h>
#include <env.h>
#include <fastboot.h>
#include <fastboot-internal.h>
#include <fb_mmc.h>
#include <fb_nand.h>
#include <part.h>
#include <stdlib.h>
#include <linux/printk.h>
/**
* image_size - final fastboot image size
*/
static u32 image_size;
/**
* fastboot_bytes_received - number of bytes received in the current download
*/
static u32 fastboot_bytes_received;
/**
* fastboot_bytes_expected - number of bytes expected in the current download
*/
static u32 fastboot_bytes_expected;
static void okay(char *, char *);
static void getvar(char *, char *);
static void download(char *, char *);
static void flash(char *, char *);
static void erase(char *, char *);
static void reboot_bootloader(char *, char *);
static void reboot_fastbootd(char *, char *);
static void reboot_recovery(char *, char *);
static void oem_format(char *, char *);
static void oem_partconf(char *, char *);
static void oem_bootbus(char *, char *);
static void run_ucmd(char *, char *);
static void run_acmd(char *, char *);
static const struct {
const char *command;
void (*dispatch)(char *cmd_parameter, char *response);
} commands[FASTBOOT_COMMAND_COUNT] = {
[FASTBOOT_COMMAND_GETVAR] = {
.command = "getvar",
.dispatch = getvar
},
[FASTBOOT_COMMAND_DOWNLOAD] = {
.command = "download",
.dispatch = download
},
[FASTBOOT_COMMAND_FLASH] = {
.command = "flash",
.dispatch = CONFIG_IS_ENABLED(FASTBOOT_FLASH, (flash), (NULL))
},
[FASTBOOT_COMMAND_ERASE] = {
.command = "erase",
.dispatch = CONFIG_IS_ENABLED(FASTBOOT_FLASH, (erase), (NULL))
},
[FASTBOOT_COMMAND_BOOT] = {
.command = "boot",
.dispatch = okay
},
[FASTBOOT_COMMAND_CONTINUE] = {
.command = "continue",
.dispatch = okay
},
[FASTBOOT_COMMAND_REBOOT] = {
.command = "reboot",
.dispatch = okay
},
[FASTBOOT_COMMAND_REBOOT_BOOTLOADER] = {
.command = "reboot-bootloader",
.dispatch = reboot_bootloader
},
[FASTBOOT_COMMAND_REBOOT_FASTBOOTD] = {
.command = "reboot-fastboot",
.dispatch = reboot_fastbootd
},
[FASTBOOT_COMMAND_REBOOT_RECOVERY] = {
.command = "reboot-recovery",
.dispatch = reboot_recovery
},
[FASTBOOT_COMMAND_SET_ACTIVE] = {
.command = "set_active",
.dispatch = okay
},
[FASTBOOT_COMMAND_OEM_FORMAT] = {
.command = "oem format",
.dispatch = CONFIG_IS_ENABLED(FASTBOOT_CMD_OEM_FORMAT, (oem_format), (NULL))
},
[FASTBOOT_COMMAND_OEM_PARTCONF] = {
.command = "oem partconf",
.dispatch = CONFIG_IS_ENABLED(FASTBOOT_CMD_OEM_PARTCONF, (oem_partconf), (NULL))
},
[FASTBOOT_COMMAND_OEM_BOOTBUS] = {
.command = "oem bootbus",
.dispatch = CONFIG_IS_ENABLED(FASTBOOT_CMD_OEM_BOOTBUS, (oem_bootbus), (NULL))
},
[FASTBOOT_COMMAND_OEM_RUN] = {
.command = "oem run",
.dispatch = CONFIG_IS_ENABLED(FASTBOOT_OEM_RUN, (run_ucmd), (NULL))
},
[FASTBOOT_COMMAND_UCMD] = {
.command = "UCmd",
.dispatch = CONFIG_IS_ENABLED(FASTBOOT_UUU_SUPPORT, (run_ucmd), (NULL))
},
[FASTBOOT_COMMAND_ACMD] = {
.command = "ACmd",
.dispatch = CONFIG_IS_ENABLED(FASTBOOT_UUU_SUPPORT, (run_acmd), (NULL))
},
};
/**
* fastboot_handle_command - Handle fastboot command
*
* @cmd_string: Pointer to command string
* @response: Pointer to fastboot response buffer
*
* Return: Executed command, or -1 if not recognized
*/
int fastboot_handle_command(char *cmd_string, char *response)
{
int i;
char *cmd_parameter;
cmd_parameter = cmd_string;
strsep(&cmd_parameter, ":");
for (i = 0; i < FASTBOOT_COMMAND_COUNT; i++) {
if (!strcmp(commands[i].command, cmd_string)) {
if (commands[i].dispatch) {
commands[i].dispatch(cmd_parameter,
response);
return i;
} else {
pr_err("command %s not supported.\n", cmd_string);
fastboot_fail("Unsupported command", response);
return -1;
}
}
}
pr_err("command %s not recognized.\n", cmd_string);
fastboot_fail("unrecognized command", response);
return -1;
}
/**
* okay() - Send bare OKAY response
*
* @cmd_parameter: Pointer to command parameter
* @response: Pointer to fastboot response buffer
*
* Send a bare OKAY fastboot response. This is used where the command is
* valid, but all the work is done after the response has been sent (e.g.
* boot, reboot etc.)
*/
static void okay(char *cmd_parameter, char *response)
{
fastboot_okay(NULL, response);
}
/**
* getvar() - Read a config/version variable
*
* @cmd_parameter: Pointer to command parameter
* @response: Pointer to fastboot response buffer
*/
static void getvar(char *cmd_parameter, char *response)
{
fastboot_getvar(cmd_parameter, response);
}
/**
* fastboot_download() - Start a download transfer from the client
*
* @cmd_parameter: Pointer to command parameter
* @response: Pointer to fastboot response buffer
*/
static void download(char *cmd_parameter, char *response)
{
char *tmp;
if (!cmd_parameter) {
fastboot_fail("Expected command parameter", response);
return;
}
fastboot_bytes_received = 0;
fastboot_bytes_expected = hextoul(cmd_parameter, &tmp);
if (fastboot_bytes_expected == 0) {
fastboot_fail("Expected nonzero image size", response);
return;
}
/*
* Nothing to download yet. Response is of the form:
* [DATA|FAIL]$cmd_parameter
*
* where cmd_parameter is an 8 digit hexadecimal number
*/
if (fastboot_bytes_expected > fastboot_buf_size) {
fastboot_fail(cmd_parameter, response);
} else {
printf("Starting download of %d bytes\n",
fastboot_bytes_expected);
fastboot_response("DATA", response, "%s", cmd_parameter);
}
}
/**
* fastboot_data_remaining() - return bytes remaining in current transfer
*
* Return: Number of bytes left in the current download
*/
u32 fastboot_data_remaining(void)
{
return fastboot_bytes_expected - fastboot_bytes_received;
}
/**
* fastboot_data_download() - Copy image data to fastboot_buf_addr.
*
* @fastboot_data: Pointer to received fastboot data
* @fastboot_data_len: Length of received fastboot data
* @response: Pointer to fastboot response buffer
*
* Copies image data from fastboot_data to fastboot_buf_addr. Writes to
* response. fastboot_bytes_received is updated to indicate the number
* of bytes that have been transferred.
*
* On completion sets image_size and ${filesize} to the total size of the
* downloaded image.
*/
void fastboot_data_download(const void *fastboot_data,
unsigned int fastboot_data_len,
char *response)
{
#define BYTES_PER_DOT 0x20000
u32 pre_dot_num, now_dot_num;
if (fastboot_data_len == 0 ||
(fastboot_bytes_received + fastboot_data_len) >
fastboot_bytes_expected) {
fastboot_fail("Received invalid data length",
response);
return;
}
/* Download data to fastboot_buf_addr */
memcpy(fastboot_buf_addr + fastboot_bytes_received,
fastboot_data, fastboot_data_len);
pre_dot_num = fastboot_bytes_received / BYTES_PER_DOT;
fastboot_bytes_received += fastboot_data_len;
now_dot_num = fastboot_bytes_received / BYTES_PER_DOT;
if (pre_dot_num != now_dot_num) {
putc('.');
if (!(now_dot_num % 74))
putc('\n');
}
*response = '\0';
}
/**
* fastboot_data_complete() - Mark current transfer complete
*
* @response: Pointer to fastboot response buffer
*
* Set image_size and ${filesize} to the total size of the downloaded image.
*/
void fastboot_data_complete(char *response)
{
/* Download complete. Respond with "OKAY" */
fastboot_okay(NULL, response);
printf("\ndownloading of %d bytes finished\n", fastboot_bytes_received);
image_size = fastboot_bytes_received;
env_set_hex("filesize", image_size);
fastboot_bytes_expected = 0;
fastboot_bytes_received = 0;
}
/**
* flash() - write the downloaded image to the indicated partition.
*
* @cmd_parameter: Pointer to partition name
* @response: Pointer to fastboot response buffer
*
* Writes the previously downloaded image to the partition indicated by
* cmd_parameter. Writes to response.
*/
static void __maybe_unused flash(char *cmd_parameter, char *response)
{
if (IS_ENABLED(CONFIG_FASTBOOT_FLASH_MMC))
fastboot_mmc_flash_write(cmd_parameter, fastboot_buf_addr,
image_size, response);
if (IS_ENABLED(CONFIG_FASTBOOT_FLASH_NAND))
fastboot_nand_flash_write(cmd_parameter, fastboot_buf_addr,
image_size, response);
}
/**
* erase() - erase the indicated partition.
*
* @cmd_parameter: Pointer to partition name
* @response: Pointer to fastboot response buffer
*
* Erases the partition indicated by cmd_parameter (clear to 0x00s). Writes
* to response.
*/
static void __maybe_unused erase(char *cmd_parameter, char *response)
{
if (IS_ENABLED(CONFIG_FASTBOOT_FLASH_MMC))
fastboot_mmc_erase(cmd_parameter, response);
if (IS_ENABLED(CONFIG_FASTBOOT_FLASH_NAND))
fastboot_nand_erase(cmd_parameter, response);
}
/**
* run_ucmd() - Execute the UCmd command
*
* @cmd_parameter: Pointer to command parameter
* @response: Pointer to fastboot response buffer
*/
static void __maybe_unused run_ucmd(char *cmd_parameter, char *response)
{
if (!cmd_parameter) {
pr_err("missing slot suffix\n");
fastboot_fail("missing command", response);
return;
}
if (run_command(cmd_parameter, 0))
fastboot_fail("", response);
else
fastboot_okay(NULL, response);
}
static char g_a_cmd_buff[64];
void fastboot_acmd_complete(void)
{
run_command(g_a_cmd_buff, 0);
}
/**
* run_acmd() - Execute the ACmd command
*
* @cmd_parameter: Pointer to command parameter
* @response: Pointer to fastboot response buffer
*/
static void __maybe_unused run_acmd(char *cmd_parameter, char *response)
{
if (!cmd_parameter) {
pr_err("missing slot suffix\n");
fastboot_fail("missing command", response);
return;
}
if (strlen(cmd_parameter) > sizeof(g_a_cmd_buff)) {
pr_err("too long command\n");
fastboot_fail("too long command", response);
return;
}
strcpy(g_a_cmd_buff, cmd_parameter);
fastboot_okay(NULL, response);
}
/**
* reboot_bootloader() - Sets reboot bootloader flag.
*
* @cmd_parameter: Pointer to command parameter
* @response: Pointer to fastboot response buffer
*/
static void reboot_bootloader(char *cmd_parameter, char *response)
{
if (fastboot_set_reboot_flag(FASTBOOT_REBOOT_REASON_BOOTLOADER))
fastboot_fail("Cannot set reboot flag", response);
else
fastboot_okay(NULL, response);
}
/**
* reboot_fastbootd() - Sets reboot fastboot flag.
*
* @cmd_parameter: Pointer to command parameter
* @response: Pointer to fastboot response buffer
*/
static void reboot_fastbootd(char *cmd_parameter, char *response)
{
if (fastboot_set_reboot_flag(FASTBOOT_REBOOT_REASON_FASTBOOTD))
fastboot_fail("Cannot set fastboot flag", response);
else
fastboot_okay(NULL, response);
}
/**
* reboot_recovery() - Sets reboot recovery flag.
*
* @cmd_parameter: Pointer to command parameter
* @response: Pointer to fastboot response buffer
*/
static void reboot_recovery(char *cmd_parameter, char *response)
{
if (fastboot_set_reboot_flag(FASTBOOT_REBOOT_REASON_RECOVERY))
fastboot_fail("Cannot set recovery flag", response);
else
fastboot_okay(NULL, response);
}
/**
* oem_format() - Execute the OEM format command
*
* @cmd_parameter: Pointer to command parameter
* @response: Pointer to fastboot response buffer
*/
static void __maybe_unused oem_format(char *cmd_parameter, char *response)
{
char cmdbuf[32];
const int mmc_dev = config_opt_enabled(CONFIG_FASTBOOT_FLASH_MMC,
CONFIG_FASTBOOT_FLASH_MMC_DEV, -1);
if (!env_get("partitions")) {
fastboot_fail("partitions not set", response);
} else {
sprintf(cmdbuf, "gpt write mmc %x $partitions", mmc_dev);
if (run_command(cmdbuf, 0))
fastboot_fail("", response);
else
fastboot_okay(NULL, response);
}
}
/**
* oem_partconf() - Execute the OEM partconf command
*
* @cmd_parameter: Pointer to command parameter
* @response: Pointer to fastboot response buffer
*/
static void __maybe_unused oem_partconf(char *cmd_parameter, char *response)
{
char cmdbuf[32];
const int mmc_dev = config_opt_enabled(CONFIG_FASTBOOT_FLASH_MMC,
CONFIG_FASTBOOT_FLASH_MMC_DEV, -1);
if (!cmd_parameter) {
fastboot_fail("Expected command parameter", response);
return;
}
/* execute 'mmc partconfg' command with cmd_parameter arguments*/
snprintf(cmdbuf, sizeof(cmdbuf), "mmc partconf %x %s 0", mmc_dev, cmd_parameter);
printf("Execute: %s\n", cmdbuf);
if (run_command(cmdbuf, 0))
fastboot_fail("Cannot set oem partconf", response);
else
fastboot_okay(NULL, response);
}
/**
* oem_bootbus() - Execute the OEM bootbus command
*
* @cmd_parameter: Pointer to command parameter
* @response: Pointer to fastboot response buffer
*/
static void __maybe_unused oem_bootbus(char *cmd_parameter, char *response)
{
char cmdbuf[32];
const int mmc_dev = config_opt_enabled(CONFIG_FASTBOOT_FLASH_MMC,
CONFIG_FASTBOOT_FLASH_MMC_DEV, -1);
if (!cmd_parameter) {
fastboot_fail("Expected command parameter", response);
return;
}
/* execute 'mmc bootbus' command with cmd_parameter arguments*/
snprintf(cmdbuf, sizeof(cmdbuf), "mmc bootbus %x %s", mmc_dev, cmd_parameter);
printf("Execute: %s\n", cmdbuf);
if (run_command(cmdbuf, 0))
fastboot_fail("Cannot set oem bootbus", response);
else
fastboot_okay(NULL, response);
}