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https://github.com/Telecominfraproject/OpenCellular.git
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ee3edc0116
We can clear the reset cause in system pre-init now because of a previous change which preserves it across a sysjump. Signed-off-by: Randall Spangler <rspangler@chromium.org> BUG=none TEST=if it boots, it works Change-Id: I1d8b99df5a0be0de9545d22ad1a6b7fb3140f813
163 lines
4.3 KiB
C
163 lines
4.3 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 "eoption.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 "spi.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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system_common_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. EEPROM must be up first, so keyboard_scan can toggle
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* debugging settings via keys held at boot. */
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#ifdef CONFIG_EEPROM
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eeprom_init();
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#endif
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#ifdef CONFIG_EOPTION
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eoption_init();
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#endif
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#ifdef CONFIG_TASK_I8042CMD
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keyboard_init();
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#endif
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#ifdef CONFIG_TASK_KEYSCAN
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keyboard_scan_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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*
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* Note that steps above here may be done TWICE per boot, once in the
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* RO image and once in the RW image. */
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vboot_init();
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/* Initialize driver modules. These can occur in any order. State
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* machines are initialized in their task functions, not here. */
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gpio_init();
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#ifdef CONFIG_LPC
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lpc_init();
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#endif
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#ifdef CONFIG_SPI
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spi_init();
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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_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_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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