mirror of
https://github.com/AsahiLinux/u-boot
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7b51b576d6
Move env_get() over to the new header file. Acked-by: Joe Hershberger <joe.hershberger@ni.com> Signed-off-by: Simon Glass <sjg@chromium.org>
297 lines
7.6 KiB
C
297 lines
7.6 KiB
C
// SPDX-License-Identifier: BSD-2-Clause
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/*
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* Copyright (C) 2016 The Android Open Source Project
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*/
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#include <common.h>
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#include <env.h>
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#include <fastboot.h>
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#include <fastboot-internal.h>
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#include <fb_mmc.h>
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#include <fb_nand.h>
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#include <fs.h>
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#include <version.h>
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static void getvar_version(char *var_parameter, char *response);
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static void getvar_version_bootloader(char *var_parameter, char *response);
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static void getvar_downloadsize(char *var_parameter, char *response);
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static void getvar_serialno(char *var_parameter, char *response);
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static void getvar_version_baseband(char *var_parameter, char *response);
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static void getvar_product(char *var_parameter, char *response);
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static void getvar_platform(char *var_parameter, char *response);
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static void getvar_current_slot(char *var_parameter, char *response);
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#if CONFIG_IS_ENABLED(FASTBOOT_FLASH)
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static void getvar_has_slot(char *var_parameter, char *response);
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#endif
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#if CONFIG_IS_ENABLED(FASTBOOT_FLASH_MMC)
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static void getvar_partition_type(char *part_name, char *response);
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#endif
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#if CONFIG_IS_ENABLED(FASTBOOT_FLASH)
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static void getvar_partition_size(char *part_name, char *response);
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#endif
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static void getvar_is_userspace(char *var_parameter, char *response);
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static const struct {
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const char *variable;
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void (*dispatch)(char *var_parameter, char *response);
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} getvar_dispatch[] = {
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{
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.variable = "version",
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.dispatch = getvar_version
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}, {
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.variable = "version-bootloader",
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.dispatch = getvar_version_bootloader
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}, {
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.variable = "downloadsize",
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.dispatch = getvar_downloadsize
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}, {
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.variable = "max-download-size",
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.dispatch = getvar_downloadsize
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}, {
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.variable = "serialno",
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.dispatch = getvar_serialno
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}, {
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.variable = "version-baseband",
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.dispatch = getvar_version_baseband
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}, {
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.variable = "product",
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.dispatch = getvar_product
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}, {
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.variable = "platform",
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.dispatch = getvar_platform
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}, {
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.variable = "current-slot",
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.dispatch = getvar_current_slot
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#if CONFIG_IS_ENABLED(FASTBOOT_FLASH)
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}, {
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.variable = "has-slot",
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.dispatch = getvar_has_slot
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#endif
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#if CONFIG_IS_ENABLED(FASTBOOT_FLASH_MMC)
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}, {
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.variable = "partition-type",
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.dispatch = getvar_partition_type
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#endif
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#if CONFIG_IS_ENABLED(FASTBOOT_FLASH)
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}, {
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.variable = "partition-size",
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.dispatch = getvar_partition_size
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#endif
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}, {
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.variable = "is-userspace",
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.dispatch = getvar_is_userspace
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}
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};
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#if CONFIG_IS_ENABLED(FASTBOOT_FLASH)
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/**
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* Get partition number and size for any storage type.
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*
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* Can be used to check if partition with specified name exists.
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*
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* If error occurs, this function guarantees to fill @p response with fail
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* string. @p response can be rewritten in caller, if needed.
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*
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* @param[in] part_name Info for which partition name to look for
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* @param[in,out] response Pointer to fastboot response buffer
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* @param[out] size If not NULL, will contain partition size (in blocks)
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* @return Partition number or negative value on error
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*/
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static int getvar_get_part_info(const char *part_name, char *response,
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size_t *size)
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{
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int r;
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# if CONFIG_IS_ENABLED(FASTBOOT_FLASH_MMC)
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struct blk_desc *dev_desc;
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disk_partition_t part_info;
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r = fastboot_mmc_get_part_info(part_name, &dev_desc, &part_info,
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response);
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if (r >= 0 && size)
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*size = part_info.size;
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# elif CONFIG_IS_ENABLED(FASTBOOT_FLASH_NAND)
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struct part_info *part_info;
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r = fastboot_nand_get_part_info(part_name, &part_info, response);
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if (r >= 0 && size)
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*size = part_info->size;
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# else
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fastboot_fail("this storage is not supported in bootloader", response);
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r = -ENODEV;
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# endif
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return r;
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}
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#endif
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static void getvar_version(char *var_parameter, char *response)
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{
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fastboot_okay(FASTBOOT_VERSION, response);
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}
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static void getvar_version_bootloader(char *var_parameter, char *response)
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{
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fastboot_okay(U_BOOT_VERSION, response);
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}
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static void getvar_downloadsize(char *var_parameter, char *response)
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{
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fastboot_response("OKAY", response, "0x%08x", fastboot_buf_size);
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}
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static void getvar_serialno(char *var_parameter, char *response)
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{
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const char *tmp = env_get("serial#");
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if (tmp)
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fastboot_okay(tmp, response);
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else
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fastboot_fail("Value not set", response);
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}
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static void getvar_version_baseband(char *var_parameter, char *response)
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{
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fastboot_okay("N/A", response);
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}
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static void getvar_product(char *var_parameter, char *response)
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{
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const char *board = env_get("board");
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if (board)
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fastboot_okay(board, response);
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else
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fastboot_fail("Board not set", response);
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}
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static void getvar_platform(char *var_parameter, char *response)
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{
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const char *p = env_get("platform");
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if (p)
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fastboot_okay(p, response);
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else
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fastboot_fail("platform not set", response);
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}
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static void getvar_current_slot(char *var_parameter, char *response)
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{
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/* A/B not implemented, for now always return "a" */
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fastboot_okay("a", response);
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}
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#if CONFIG_IS_ENABLED(FASTBOOT_FLASH)
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static void getvar_has_slot(char *part_name, char *response)
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{
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char part_name_wslot[PART_NAME_LEN];
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size_t len;
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int r;
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if (!part_name || part_name[0] == '\0')
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goto fail;
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/* part_name_wslot = part_name + "_a" */
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len = strlcpy(part_name_wslot, part_name, PART_NAME_LEN - 3);
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if (len > PART_NAME_LEN - 3)
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goto fail;
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strcat(part_name_wslot, "_a");
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r = getvar_get_part_info(part_name_wslot, response, NULL);
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if (r >= 0) {
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fastboot_okay("yes", response); /* part exists and slotted */
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return;
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}
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r = getvar_get_part_info(part_name, response, NULL);
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if (r >= 0)
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fastboot_okay("no", response); /* part exists but not slotted */
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/* At this point response is filled with okay or fail string */
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return;
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fail:
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fastboot_fail("invalid partition name", response);
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}
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#endif
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#if CONFIG_IS_ENABLED(FASTBOOT_FLASH_MMC)
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static void getvar_partition_type(char *part_name, char *response)
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{
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int r;
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struct blk_desc *dev_desc;
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disk_partition_t part_info;
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r = fastboot_mmc_get_part_info(part_name, &dev_desc, &part_info,
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response);
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if (r >= 0) {
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r = fs_set_blk_dev_with_part(dev_desc, r);
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if (r < 0)
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fastboot_fail("failed to set partition", response);
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else
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fastboot_okay(fs_get_type_name(), response);
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}
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}
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#endif
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#if CONFIG_IS_ENABLED(FASTBOOT_FLASH)
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static void getvar_partition_size(char *part_name, char *response)
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{
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int r;
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size_t size;
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r = getvar_get_part_info(part_name, response, &size);
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if (r >= 0)
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fastboot_response("OKAY", response, "0x%016zx", size);
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}
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#endif
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static void getvar_is_userspace(char *var_parameter, char *response)
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{
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fastboot_okay("no", response);
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}
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/**
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* fastboot_getvar() - Writes variable indicated by cmd_parameter to response.
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*
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* @cmd_parameter: Pointer to command parameter
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* @response: Pointer to fastboot response buffer
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*
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* Look up cmd_parameter first as an environment variable of the form
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* fastboot.<cmd_parameter>, if that exists return use its value to set
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* response.
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*
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* Otherwise lookup the name of variable and execute the appropriate
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* function to return the requested value.
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*/
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void fastboot_getvar(char *cmd_parameter, char *response)
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{
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if (!cmd_parameter) {
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fastboot_fail("missing var", response);
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} else {
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#define FASTBOOT_ENV_PREFIX "fastboot."
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int i;
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char *var_parameter = cmd_parameter;
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char envstr[FASTBOOT_RESPONSE_LEN];
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const char *s;
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snprintf(envstr, sizeof(envstr) - 1,
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FASTBOOT_ENV_PREFIX "%s", cmd_parameter);
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s = env_get(envstr);
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if (s) {
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fastboot_response("OKAY", response, "%s", s);
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return;
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}
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strsep(&var_parameter, ":");
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for (i = 0; i < ARRAY_SIZE(getvar_dispatch); ++i) {
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if (!strcmp(getvar_dispatch[i].variable,
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cmd_parameter)) {
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getvar_dispatch[i].dispatch(var_parameter,
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response);
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return;
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}
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}
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pr_warn("WARNING: unknown variable: %s\n", cmd_parameter);
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fastboot_fail("Variable not implemented", response);
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}
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}
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