*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
#include <ao.h>
#include "stm32l.h"
#include <string.h>
+#include <ao_boot.h>
extern void main(void);
extern char __stack__;
extern char __text_start__, __text_end__;
-extern char __data_start__, __data_end__;
+extern char _start__, _end__;
extern char __bss_start__, __bss_end__;
/* Interrupt functions */
const void *stm_interrupt_vector[];
-#define BOOT_FETCH(o) (*((uint32_t *) (AO_BOOT_APPLICATION_BASE + (o))))
-
-#ifdef AO_BOOT_APPLICATION_PIN
-#include <ao_exti.h>
-
-#define AO_BOOT_APPLICATION 0x5a5aa5a5
-#define AO_BOOT_APPLICATION_CHECK 0xc3c33c3c
-
-static uint32_t ao_boot_application;
-static uint32_t ao_boot_application_check;
-
-static void
-ao_boot_chain(void) {
- uint32_t sp;
- uint32_t pc;
-
- sp = BOOT_FETCH(0);
- pc = BOOT_FETCH(4);
- asm ("mov sp, %0" : : "r" (sp));
- asm ("mov lr, %0" : : "r" (pc));
- asm ("bx lr");
+uint32_t
+stm_flash_size(void) {
+ uint16_t dev_id = stm_dev_id();
+ uint16_t kbytes = 0;
+
+ switch (dev_id) {
+ case 0x416: /* cat 1 */
+ kbytes = stm_flash_size_medium.f_size;
+ break;
+ case 0x429: /* cat 2 */
+ kbytes = stm_flash_size_medium.f_size & 0xff;
+ break;
+ case 0x427: /* cat 3 */
+ kbytes = stm_flash_size_large.f_size;
+ break;
+ case 0x436: /* cat 4 */
+ switch (stm_flash_size_large.f_size) {
+ case 0:
+ kbytes = 256;
+ break;
+ case 1:
+ kbytes = 384;
+ break;
+ }
+ break;
+ case 0x437: /* cat 5 */
+ kbytes = stm_flash_size_large.f_size;
+ break;
+ }
+ return (uint32_t) kbytes * 1024;
}
-void
-ao_reboot_application(void)
+void start(void)
{
- ao_boot_application = AO_BOOT_APPLICATION;
- ao_boot_application_check = AO_BOOT_APPLICATION_CHECK;
- ao_arch_reboot();
-}
-
+#ifdef AO_BOOT_CHAIN
+ if (ao_boot_check_chain()) {
+#ifdef AO_BOOT_PIN
+ ao_boot_check_pin();
#endif
-
-void start(void) {
-#ifdef AO_BOOT_APPLICATION_PIN
- uint16_t v;
-
- if (ao_boot_application == AO_BOOT_APPLICATION &&
- ao_boot_application_check == AO_BOOT_APPLICATION_CHECK) {
- ao_boot_application = 0;
- ao_boot_application_check = 0;
- ao_boot_chain();
}
- /* Enable power interface clock */
- stm_rcc.apb1enr |= (1 << STM_RCC_APB1ENR_PWREN);
-
- /* Enable the input pin */
- ao_enable_input(&AO_BOOT_APPLICATION_GPIO, AO_BOOT_APPLICATION_PIN,
- AO_BOOT_APPLICATION_MODE);
-
- /* Read the value */
- v = stm_gpio_get(&AO_BOOT_APPLICATION_GPIO, AO_BOOT_APPLICATION_PIN);
-
- /* Reset the chip to turn off the port and the power interface clock */
- ao_gpio_set_mode(&AO_BOOT_APPLICATION_GPIO, AO_BOOT_APPLICATION_PIN, 0);
- ao_disable_port(&AO_BOOT_APPLICATION_GPIO);
- stm_rcc.apb1enr &= ~(1 << STM_RCC_APB1ENR_PWREN);
- if (v == AO_BOOT_APPLICATION_VALUE)
- ao_boot_chain();
#endif
-
/* Set interrupt vector table offset */
stm_nvic.vto = (uint32_t) &stm_interrupt_vector;
- memcpy(&__data_start__, &__text_end__, &__data_end__ - &__data_start__);
+ memcpy(&_start__, &__text_end__, &_end__ - &_start__);
memset(&__bss_start__, '\0', &__bss_end__ - &__bss_start__);
main();
}