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https://github.com/Telecominfraproject/OpenCellular.git
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b2ac77b37b
This is necessary at init-time for verified boot to jump from RO to one of the RW images. It's also used by factory EC update to update one image and then jump to the updated image to finish the update. In this case, the x86 does NOT reboot. Signed-off-by: Randall Spangler <rspangler@chromium.org> BUG=chrome-os-partner:8449 TEST=manual 1) power on x86 and log in 2) sysjump a --> system is in a; x86 has not rebooted 3) sysjump ro --> system is back in RO; x86 has not rebooted 4) reboot -> system is in RO; x86 HAS rebooted Change-Id: I9dbadcf9775e146a0718abfd4ee0758b65350a87
154 lines
3.9 KiB
C
154 lines
3.9 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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* Main routine for Chrome EC
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*/
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#include "adc.h"
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#include "charger.h"
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#include "chip_temp_sensor.h"
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#include "clock.h"
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#include "config.h"
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#include "console.h"
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#include "eeprom.h"
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#include "flash.h"
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#include "gpio.h"
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#include "i2c.h"
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#include "jtag.h"
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#include "keyboard.h"
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#include "keyboard_scan.h"
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#include "lpc.h"
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#include "memory_commands.h"
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#include "onewire.h"
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#include "peci.h"
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#include "port80.h"
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#include "power_button.h"
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#include "powerdemo.h"
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#include "pwm.h"
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#include "system.h"
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#include "task.h"
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#include "temp_sensor.h"
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#include "tmp006.h"
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#include "timer.h"
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#include "uart.h"
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#include "usb_charge.h"
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#include "vboot.h"
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#include "watchdog.h"
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int main(void)
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{
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/* Pre-initialization (pre-verified boot) stage. Initialization at
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* this level should do as little as possible, because verified boot
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* may need to jump to another image, which will repeat this
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* initialization. In particular, modules should NOT enable
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* interrupts.*/
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/* Configure the pin multiplexers and GPIOs */
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configure_board();
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jtag_pre_init();
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gpio_pre_init();
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/* Initialize interrupts, but don't enable any of them. Note that
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* task scheduling is not enabled until task_start() below. */
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task_pre_init();
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#ifdef CONFIG_FLASH
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flash_pre_init();
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#endif
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/* Verified boot pre-init. This write-protects flash if necessary.
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* Flash and GPIOs must be initialized first. */
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vboot_pre_init();
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/* Initialize the system module. This enables the hibernate clock
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* source we need to calibrate the internal oscillator. */
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system_pre_init();
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/* Set the CPU clocks / PLLs. System is now running at full speed. */
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clock_init();
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/* Main initialization stage. Modules may enable interrupts here. */
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/* Initialize UART. uart_printf(), etc. may now be used. */
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uart_init();
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#ifdef CONFIG_TASK_WATCHDOG
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/* Intialize watchdog timer. All lengthy operations between now and
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* task_start() must periodically call watchdog_reload() to avoid
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* triggering a watchdog reboot. (This pretty much applies only to
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* verified boot, because all *other* lengthy operations should be done
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* by tasks.) */
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watchdog_init(1100);
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#endif
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/* Initialize timer. Everything after this can be benchmarked.
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* get_time() and udelay() may now be used. usleep() requires task
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* scheduling, so cannot be used yet. */
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timer_init();
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/* Verified boot needs to read the initial keyboard state and EEPROM
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* contents. */
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#ifdef CONFIG_TASK_KEYSCAN
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keyboard_scan_init();
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#endif
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#ifdef CONFIG_EEPROM
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eeprom_init();
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#endif
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/* Verified boot initialization. This may jump to another image, which
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* will need to reconfigure / reinitialize the system, so as little as
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* possible should be done above this step. */
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vboot_init();
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system_init();
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gpio_init();
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#ifdef CONFIG_LPC
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port_80_init();
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lpc_init();
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uart_comx_enable();
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#endif
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#ifdef CONFIG_PWM
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pwm_init();
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#endif
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#ifdef CONFIG_I2C
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i2c_init();
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#endif
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#ifdef CONFIG_TASK_TEMPSENSOR
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temp_sensor_init();
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chip_temp_sensor_init();
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#endif
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#ifdef CONFIG_TASK_POWERBTN
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power_button_init();
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#endif
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#ifdef CONFIG_ADC
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adc_init();
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#endif
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#ifdef CONFIG_ONEWIRE
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onewire_init();
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#endif
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#ifdef CONFIG_CHARGER
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charger_init();
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#endif
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#ifdef CONFIG_PECI
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peci_init();
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#endif
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#ifdef CONFIG_USB_CHARGE
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usb_charge_init();
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#endif
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/* Print the init time and reset cause. Init time isn't completely
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* accurate because it can't take into account the time for the first
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* few module inits, but it'll at least catch the majority of them. */
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uart_printf("\n\n--- Chrome EC initialized in %d us ---\n",
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get_time().le.lo);
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uart_printf("build: %s\n", system_get_build_info());
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uart_printf("(image: %s, last reset: %s)\n",
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system_get_image_copy_string(),
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system_get_reset_cause_string());
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/* Launch task scheduling (never returns) */
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return task_start();
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}
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