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/* Copyright 2020 The Chromium OS Authors. All rights reserved.
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*
* Firmware screen definitions.
*/
#include "2common.h"
#include "2misc.h"
#include "2nvstorage.h"
#include "2ui.h"
#include "2ui_private.h"
#include "vboot_api.h" /* for VB_KEY_ */
#define MENU_ITEMS(a) \
.num_items = ARRAY_SIZE(a), \
.items = a
static const struct vb2_menu_item empty_menu[] = { };
/******************************************************************************/
/* VB2_SCREEN_BLANK */
static const struct vb2_screen_info blank_screen = {
.id = VB2_SCREEN_BLANK,
.name = "Blank",
MENU_ITEMS(empty_menu),
};
/******************************************************************************/
/* VB2_SCREEN_RECOVERY_BROKEN */
static const struct vb2_screen_info recovery_broken_screen = {
.id = VB2_SCREEN_RECOVERY_BROKEN,
.name = "Recover broken device",
MENU_ITEMS(empty_menu),
};
/******************************************************************************/
/* VB2_SCREEN_RECOVERY_SELECT */
static const struct vb2_menu_item recovery_select_items[] = {
{
.text = "Recovery using phone",
.target = VB2_SCREEN_RECOVERY_PHONE_STEP1,
},
{
.text = "Recovery using external disk",
.target = VB2_SCREEN_RECOVERY_DISK_STEP1,
},
};
static const struct vb2_screen_info recovery_select_screen = {
.id = VB2_SCREEN_RECOVERY_SELECT,
.name = "Recovery method selection",
MENU_ITEMS(recovery_select_items),
};
/******************************************************************************/
/* VB2_SCREEN_RECOVERY_INVALID */
static const struct vb2_screen_info recovery_invalid_screen = {
.id = VB2_SCREEN_RECOVERY_INVALID,
.name = "Invalid recovery inserted",
MENU_ITEMS(empty_menu),
};
/******************************************************************************/
/* VB2_SCREEN_RECOVERY_TO_DEV */
#define RECOVERY_TO_DEV_ITEM_CONFIRM 0
vb2_error_t recovery_to_dev_init(struct vb2_ui_context *ui)
{
if (vb2_get_sd(ui->ctx)->flags & VB2_SD_FLAG_DEV_MODE_ENABLED) {
VB2_DEBUG("Dev mode already enabled?\n");
return vb2_ui_back_action(ui);
}
if (!PHYSICAL_PRESENCE_KEYBOARD && vb2ex_physical_presence_pressed()) {
VB2_DEBUG("Presence button stuck?\n");
return vb2_ui_back_action(ui);
}
/* Disable "Confirm" button for other physical presence types. */
if (!PHYSICAL_PRESENCE_KEYBOARD)
ui->state.disabled_item_mask =
1 << RECOVERY_TO_DEV_ITEM_CONFIRM;
return VB2_REQUEST_UI_CONTINUE;
}
vb2_error_t vb2_ui_recovery_to_dev_action(struct vb2_ui_context *ui)
{
static int pressed_last;
int pressed;
if (ui->state.screen->id != VB2_SCREEN_RECOVERY_TO_DEV) {
VB2_DEBUG("Action needs RECOVERY_TO_DEV screen\n");
return VB2_REQUEST_UI_CONTINUE;
}
if (ui->key == ' ') {
VB2_DEBUG("SPACE means cancel dev mode transition\n");
return vb2_ui_back_action(ui);
}
if (PHYSICAL_PRESENCE_KEYBOARD) {
if (ui->key != VB_KEY_ENTER &&
ui->key != VB_BUTTON_POWER_SHORT_PRESS)
return VB2_REQUEST_UI_CONTINUE;
if (!ui->key_trusted) {
VB2_DEBUG("Reject untrusted %s confirmation\n",
ui->key == VB_KEY_ENTER ?
"ENTER" : "POWER");
return VB2_REQUEST_UI_CONTINUE;
}
} else {
pressed = vb2ex_physical_presence_pressed();
if (pressed) {
VB2_DEBUG("Physical presence button pressed, "
"awaiting release\n");
pressed_last = 1;
return VB2_REQUEST_UI_CONTINUE;
}
if (!pressed_last)
return VB2_REQUEST_UI_CONTINUE;
VB2_DEBUG("Physical presence button released\n");
}
VB2_DEBUG("Physical presence confirmed!\n");
/* Sanity check, should never happen. */
if ((vb2_get_sd(ui->ctx)->flags & VB2_SD_FLAG_DEV_MODE_ENABLED) ||
!vb2_allow_recovery(ui->ctx)) {
VB2_DEBUG("ERROR: dev transition sanity check failed\n");
return VB2_REQUEST_UI_CONTINUE;
}
VB2_DEBUG("Enabling dev mode and rebooting...\n");
vb2_enable_developer_mode(ui->ctx);
return VB2_REQUEST_REBOOT_EC_TO_RO;
}
static const struct vb2_menu_item recovery_to_dev_items[] = {
[RECOVERY_TO_DEV_ITEM_CONFIRM] = {
.text = "Confirm",
.action = vb2_ui_recovery_to_dev_action,
},
{
.text = "Cancel",
.action = vb2_ui_back_action,
},
};
static const struct vb2_screen_info recovery_to_dev_screen = {
.id = VB2_SCREEN_RECOVERY_TO_DEV,
.name = "Transition to developer mode",
.init = recovery_to_dev_init,
.action = vb2_ui_recovery_to_dev_action,
MENU_ITEMS(recovery_to_dev_items),
};
/******************************************************************************/
/* VB2_SCREEN_RECOVERY_PHONE_STEP1 */
static const struct vb2_screen_info recovery_phone_step1_screen = {
.id = VB2_SCREEN_RECOVERY_PHONE_STEP1,
.name = "Phone recovery step 1",
MENU_ITEMS(empty_menu),
};
/******************************************************************************/
/* VB2_SCREEN_RECOVERY_DISK_STEP1 */
static const struct vb2_screen_info recovery_disk_step1_screen = {
.id = VB2_SCREEN_RECOVERY_DISK_STEP1,
.name = "Disk recovery step 1",
MENU_ITEMS(empty_menu),
};
/******************************************************************************/
/*
* TODO(chromium:1035800): Refactor UI code across vboot and depthcharge.
* Currently vboot and depthcharge maintain their own copies of menus/screens.
* vboot detects keyboard input and controls the navigation among different menu
* items and screens, while depthcharge performs the actual rendering of each
* screen, based on the menu information passed from vboot.
*/
static const struct vb2_screen_info *screens[] = {
&blank_screen,
&recovery_broken_screen,
&recovery_select_screen,
&recovery_invalid_screen,
&recovery_to_dev_screen,
&recovery_phone_step1_screen,
&recovery_disk_step1_screen,
};
const struct vb2_screen_info *vb2_get_screen_info(enum vb2_screen id)
{
int i;
for (i = 0; i < ARRAY_SIZE(screens); i++) {
if (screens[i]->id == id)
return screens[i];
}
return NULL;
}
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