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https://github.com/Telecominfraproject/OpenCellular.git
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41e3b58258
Now that we can jump directly to other images, we don't need this. We jump to image A by default, unless the recovery button or signal is asserted. Signed-off-by: Randall Spangler <rspangler@chromium.org> BUG=chrome-os-partner:8562 TEST=manual Reboot -> runs image A Reboot with reload (F3) held down -> runs RO Reboot with 'dut-control goog_rec_mode:on' -> runs RO Change-Id: I8259fe0d738ce0ca897d2f4427d8cf61858b8901
66 lines
1.7 KiB
C
66 lines
1.7 KiB
C
/* Copyright (c) 2012 The Chromium OS Authors. All rights reserved.
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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/* Verified boot module for Chrome EC */
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#include "gpio.h"
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#include "keyboard_scan.h"
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#include "system.h"
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#include "uart.h"
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#include "util.h"
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#include "vboot.h"
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/* Jumps to one of the RW images if necessary. */
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static void jump_to_other_image(void)
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{
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/* Only jump to another image if we're currently in RO */
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if (system_get_image_copy() != SYSTEM_IMAGE_RO)
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return;
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/* Don't jump if recovery requested */
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if (keyboard_scan_recovery_pressed()) {
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uart_puts("Vboot staying in RO because key pressed.\n");
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return;
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}
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#if !defined(BOARD_daisy) && !defined(BOARD_discovery)
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/* TODO: (crosbug.com/p/8572) Daisy and discovery don't define a GPIO
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* for the recovery signal from servo, so can't check it. */
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if (gpio_get_level(GPIO_RECOVERYn) == 0) {
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uart_puts("Vboot staying in RO due to recovery signal.\n");
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return;
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}
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#endif
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#ifdef BOARD_link
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/* TODO: (crosbug.com/p/8561) once daisy can warm-boot to another
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* image, enable this there too. */
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/* TODO: real verified boot (including recovery reason); for now, just
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* jump to image A. */
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system_run_image_copy(SYSTEM_IMAGE_RW_A);
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#endif
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}
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/*****************************************************************************/
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/* Initialization */
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int vboot_pre_init(void)
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{
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/* FIXME(wfrichar): crosbug.com/p/7453: should protect flash */
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return EC_SUCCESS;
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}
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int vboot_init(void)
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{
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/* FIXME(wfrichar): placeholder for full verified boot implementation.
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* TBD exactly how, but we may want to continue in RO firmware, jump
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* directly to one of the RW firmwares, etc. */
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jump_to_other_image();
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return EC_SUCCESS;
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}
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