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// SPDX-License-Identifier: BSD-2-Clause
/*
* Copyright (C) 2016 The Android Open Source Project
*/
#include <common.h>
#include <fastboot.h>
#include <fastboot-internal.h>
#include <fb_mmc.h>
#include <fb_nand.h>
#include <fs.h>
#include <version.h>
static void getvar_version(char *var_parameter, char *response);
static void getvar_bootloader_version(char *var_parameter, char *response);
static void getvar_downloadsize(char *var_parameter, char *response);
static void getvar_serialno(char *var_parameter, char *response);
static void getvar_version_baseband(char *var_parameter, char *response);
static void getvar_product(char *var_parameter, char *response);
static void getvar_current_slot(char *var_parameter, char *response);
static void getvar_slot_suffixes(char *var_parameter, char *response);
static void getvar_has_slot(char *var_parameter, char *response);
#if CONFIG_IS_ENABLED(FASTBOOT_FLASH_MMC)
static void getvar_partition_type(char *part_name, char *response);
#endif
#if CONFIG_IS_ENABLED(FASTBOOT_FLASH)
static void getvar_partition_size(char *part_name, char *response);
#endif
static const struct {
const char *variable;
void (*dispatch)(char *var_parameter, char *response);
} getvar_dispatch[] = {
{
.variable = "version",
.dispatch = getvar_version
}, {
.variable = "bootloader-version",
.dispatch = getvar_bootloader_version
}, {
.variable = "version-bootloader",
.dispatch = getvar_bootloader_version
}, {
.variable = "downloadsize",
.dispatch = getvar_downloadsize
}, {
.variable = "max-download-size",
.dispatch = getvar_downloadsize
}, {
.variable = "serialno",
.dispatch = getvar_serialno
}, {
.variable = "version-baseband",
.dispatch = getvar_version_baseband
}, {
.variable = "product",
.dispatch = getvar_product
}, {
.variable = "current-slot",
.dispatch = getvar_current_slot
}, {
.variable = "slot-suffixes",
.dispatch = getvar_slot_suffixes
}, {
.variable = "has_slot",
.dispatch = getvar_has_slot
#if CONFIG_IS_ENABLED(FASTBOOT_FLASH_MMC)
}, {
.variable = "partition-type",
.dispatch = getvar_partition_type
#endif
#if CONFIG_IS_ENABLED(FASTBOOT_FLASH)
}, {
.variable = "partition-size",
.dispatch = getvar_partition_size
#endif
}
};
static void getvar_version(char *var_parameter, char *response)
{
fastboot_okay(FASTBOOT_VERSION, response);
}
static void getvar_bootloader_version(char *var_parameter, char *response)
{
fastboot_okay(U_BOOT_VERSION, response);
}
static void getvar_downloadsize(char *var_parameter, char *response)
{
fastboot_response("OKAY", response, "0x%08x", fastboot_buf_size);
}
static void getvar_serialno(char *var_parameter, char *response)
{
const char *tmp = env_get("serial#");
if (tmp)
fastboot_okay(tmp, response);
else
fastboot_fail("Value not set", response);
}
static void getvar_version_baseband(char *var_parameter, char *response)
{
fastboot_okay("N/A", response);
}
static void getvar_product(char *var_parameter, char *response)
{
const char *board = env_get("board");
if (board)
fastboot_okay(board, response);
else
fastboot_fail("Board not set", response);
}
static void getvar_current_slot(char *var_parameter, char *response)
{
/* A/B not implemented, for now always return _a */
fastboot_okay("_a", response);
}
static void getvar_slot_suffixes(char *var_parameter, char *response)
{
fastboot_okay("_a,_b", response);
}
static void getvar_has_slot(char *part_name, char *response)
{
if (part_name && (!strcmp(part_name, "boot") ||
!strcmp(part_name, "system")))
fastboot_okay("yes", response);
else
fastboot_okay("no", response);
}
#if CONFIG_IS_ENABLED(FASTBOOT_FLASH_MMC)
static void getvar_partition_type(char *part_name, char *response)
{
int r;
struct blk_desc *dev_desc;
disk_partition_t part_info;
r = fastboot_mmc_get_part_info(part_name, &dev_desc, &part_info,
response);
if (r >= 0) {
r = fs_set_blk_dev_with_part(dev_desc, r);
if (r < 0)
fastboot_fail("failed to set partition", response);
else
fastboot_okay(fs_get_type_name(), response);
}
}
#endif
#if CONFIG_IS_ENABLED(FASTBOOT_FLASH)
static void getvar_partition_size(char *part_name, char *response)
{
int r;
size_t size;
#if CONFIG_IS_ENABLED(FASTBOOT_FLASH_MMC)
struct blk_desc *dev_desc;
disk_partition_t part_info;
r = fastboot_mmc_get_part_info(part_name, &dev_desc, &part_info,
response);
if (r >= 0)
size = part_info.size;
#endif
#if CONFIG_IS_ENABLED(FASTBOOT_FLASH_NAND)
struct part_info *part_info;
r = fastboot_nand_get_part_info(part_name, &part_info, response);
if (r >= 0)
size = part_info->size;
#endif
if (r >= 0)
fastboot_response("OKAY", response, "0x%016zx", size);
}
#endif
/**
* fastboot_getvar() - Writes variable indicated by cmd_parameter to response.
*
* @cmd_parameter: Pointer to command parameter
* @response: Pointer to fastboot response buffer
*
* Look up cmd_parameter first as an environment variable of the form
* fastboot.<cmd_parameter>, if that exists return use its value to set
* response.
*
* Otherwise lookup the name of variable and execute the appropriate
* function to return the requested value.
*/
void fastboot_getvar(char *cmd_parameter, char *response)
{
if (!cmd_parameter) {
fastboot_fail("missing var", response);
} else {
#define FASTBOOT_ENV_PREFIX "fastboot."
int i;
char *var_parameter = cmd_parameter;
char envstr[FASTBOOT_RESPONSE_LEN];
const char *s;
snprintf(envstr, sizeof(envstr) - 1,
FASTBOOT_ENV_PREFIX "%s", cmd_parameter);
s = env_get(envstr);
if (s) {
fastboot_response("OKAY", response, "%s", s);
return;
}
strsep(&var_parameter, ":");
for (i = 0; i < ARRAY_SIZE(getvar_dispatch); ++i) {
if (!strcmp(getvar_dispatch[i].variable,
cmd_parameter)) {
getvar_dispatch[i].dispatch(var_parameter,
response);
return;
}
}
pr_warn("WARNING: unknown variable: %s\n", cmd_parameter);
fastboot_fail("Variable not implemented", response);
}
}
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