75 lines
2.2 KiB
C
75 lines
2.2 KiB
C
/* Reflow Oven Controller
|
|
*
|
|
* Copyright (C) 2020 Mario Hüttel <mario.huettel@gmx.net>
|
|
*
|
|
* This file is part of the Reflow Oven Controller Project.
|
|
*
|
|
* The reflow oven controller is free software: you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License version 2 as
|
|
* published by the Free Software Foundation.
|
|
*
|
|
* The Reflow Oven Control Firmware is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with the reflow oven controller project.
|
|
* If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#include <reflow-controller/updater/updater.h>
|
|
#include <reflow-controller/safety/safety-memory.h>
|
|
#include <reflow-controller/safety/watchdog.h>
|
|
#include <generated/updater-ram-code.bin.h>
|
|
#include <stm32/stm32f4xx.h>
|
|
#include <cmsis/core_cm4.h>
|
|
#include <stdint.h>
|
|
#include <stddef.h>
|
|
|
|
void __attribute__((noreturn)) start_updater_ram_code(void)
|
|
{
|
|
const char *updater_src = binary_blob;
|
|
char *dest_ptr = (char *)UPDATER_RAM_CODE_BASE_ADDRESS;
|
|
uint32_t *dest_ptr_words = (uint32_t *)UPDATER_RAM_CODE_BASE_ADDRESS;
|
|
uint32_t updater_size = (uint32_t)sizeof(binary_blob);
|
|
uint32_t i;
|
|
void (*reset_ptr)(void);
|
|
|
|
/* This function will never return
|
|
* because it corrupts memory by copying the ram code for updating
|
|
* Therefore we have to make sure to only use stack in this function
|
|
*/
|
|
|
|
/* Disable all IRQs and ack the watchdog */
|
|
__disable_irq();
|
|
watchdog_ack(WATCHDOG_MAGIC_KEY);
|
|
|
|
for (i = 0UL; i < updater_size; i++)
|
|
*(dest_ptr++) = *(updater_src++);
|
|
|
|
/* Load the reset vector of the RAM code */
|
|
reset_ptr = (void (*)(void))dest_ptr_words[1];
|
|
|
|
/* Move the interrupt vector table to ram code */
|
|
SCB->VTOR = UPDATER_RAM_CODE_BASE_ADDRESS;
|
|
|
|
reset_ptr();
|
|
|
|
while(1);
|
|
}
|
|
|
|
void __attribute__((noreturn)) updater_update_from_file(const char *filename)
|
|
{
|
|
struct safety_memory_boot_status status;
|
|
|
|
safety_memory_get_boot_status(&status);
|
|
status.reboot_to_bootloader = 0xFFFFFFFFUL;
|
|
safety_memory_set_boot_status(&status);
|
|
|
|
safety_memory_set_update_filename(filename);
|
|
|
|
NVIC_SystemReset();
|
|
while (1);
|
|
}
|