2 * Copyright © 2012 Keith Packard <keithp@keithp.com>
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
9 * This program is distributed in the hope that it will be useful, but
10 * WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * General Public License for more details.
14 * You should have received a copy of the GNU General Public License along
15 * with this program; if not, write to the Free Software Foundation, Inc.,
16 * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
24 #ifndef IS_FLASH_LOADER
25 #error Should define IS_FLASH_LOADER
26 #define IS_FLASH_LOADER 0
29 #ifndef RELOCATE_INTERRUPT
31 #define RELOCATE_INTERRUPT 1
35 extern void main(void);
36 extern char __stack__;
37 extern char __text_start__, __text_end__;
38 extern char _start__, _end__;
39 extern char __bss_start__, __bss_end__;
40 #if RELOCATE_INTERRUPT
41 extern char __interrupt_rom__, __interrupt_start__, __interrupt_end__;
44 /* Interrupt functions */
46 void stm_halt_isr(void)
48 ao_panic(AO_PANIC_CRASH);
51 void stm_ignore_isr(void)
55 const void *stm_interrupt_vector[];
58 stm_flash_size(void) {
59 uint16_t dev_id = stm_dev_id();
64 kbytes = stm_flash_size_04x.f_size;
67 return (uint32_t) kbytes * 1024;
73 if (ao_boot_check_chain()) {
80 stm_rcc.apb2enr |= (1 << STM_RCC_APB2ENR_SYSCFGCOMPEN);
82 #if RELOCATE_INTERRUPT
83 memcpy(&__interrupt_start__, &__interrupt_rom__, &__interrupt_end__ - &__interrupt_start__);
84 stm_syscfg.cfgr1 = (stm_syscfg.cfgr1 & ~(STM_SYSCFG_CFGR1_MEM_MODE_MASK << STM_SYSCFG_CFGR1_MEM_MODE)) |
85 (STM_SYSCFG_CFGR1_MEM_MODE_SRAM << STM_SYSCFG_CFGR1_MEM_MODE);
87 /* Switch to Main Flash mode (DFU loader leaves us in System mode) */
88 stm_syscfg.cfgr1 = (stm_syscfg.cfgr1 & ~(STM_SYSCFG_CFGR1_MEM_MODE_MASK << STM_SYSCFG_CFGR1_MEM_MODE)) |
89 (STM_SYSCFG_CFGR1_MEM_MODE_MAIN_FLASH << STM_SYSCFG_CFGR1_MEM_MODE);
91 memcpy(&_start__, &__text_end__, &_end__ - &_start__);
92 memset(&__bss_start__, '\0', &__bss_end__ - &__bss_start__);
96 #define STRINGIFY(x) #x
99 void __attribute__ ((weak)) stm_ ## name ## _isr(void); \
100 _Pragma(STRINGIFY(weak stm_ ## name ## _isr = stm_ignore_isr))
102 #define isr_halt(name) \
103 void __attribute__ ((weak)) stm_ ## name ## _isr(void); \
104 _Pragma(STRINGIFY(weak stm_ ## name ## _isr = stm_halt_isr))
128 isr(tim1_brk_up_trg_com)
144 isr(usart3_4_5_6_7_8)
151 #define i(addr,name) [(addr)/4] = stm_ ## name ## _isr
153 __attribute__ ((section(".interrupt")))
154 const void *stm_interrupt_vector[] = {
163 i(0x40, wwdg), /* IRQ0 */
174 i(0x6c, dma_ch4_5_6),
176 i(0x74, tim1_brk_up_trg_com),
192 i(0xb4, usart3_4_5_6_7_8),