2 * Copyright © 2013 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.
23 #ifndef IS_FLASH_LOADER
24 #error Should define IS_FLASH_LOADER
25 #define IS_FLASH_LOADER 0
29 #define RELOCATE_INTERRUPT 1
32 /* Interrupt functions */
34 void lpc_halt_isr(void)
36 ao_panic(AO_PANIC_CRASH);
39 void lpc_ignore_isr(void)
43 #define STRINGIFY(x) #x
46 void __attribute__ ((weak)) lpc_ ## name ## _isr(void); \
47 _Pragma(STRINGIFY(weak lpc_ ## name ## _isr = lpc_ignore_isr))
49 #define isr_halt(name) \
50 void __attribute__ ((weak)) lpc_ ## name ## _isr(void); \
51 _Pragma(STRINGIFY(weak lpc_ ## name ## _isr = lpc_halt_isr))
63 isr(pin_int0) /* IRQ0 */
67 isr(pin_int4) /* IRQ4 */
77 isr(ct16b0) /* IRQ16 */
93 #define i(addr,name) [(addr)/4] = lpc_ ## name ## _isr
94 #define c(addr,value) [(addr)/4] = (value)
96 extern char __stack[];
97 void _start(void) __attribute__((__noreturn__));
99 __attribute__ ((section(".init")))
100 const void *const __interrupt_vector[0x30] = {
118 i(0x40, pin_int0), /* IRQ0 */
122 i(0x50, pin_int4), /* IRQ4 */
127 i(0x60, gint0), /* IRQ8 */
131 i(0x70, hardfault), /* IRQ12 */
136 i(0x80, ct16b0), /* IRQ16 */
140 i(0x90, ssp0), /* IRQ20 */
145 i(0xa0, adc), /* IRQ24 */
150 i(0xb0, hardfault), /* IRQ28 */
157 * Previous versions of this code had a 256 byte interupt vector. Add
158 * some padding to make sure the other low ROM variables land at the
162 __attribute__ ((section(".init.0")))
163 const void *const __interrupt_pad[0x10];
165 void main(void) __attribute__((__noreturn__));
167 void *__interrupt_ram[sizeof(__interrupt_vector)/sizeof(__interrupt_vector[0])] __attribute((section(".preserve.1")));
169 extern char __data_source[];
170 extern char __data_start[];
171 extern char __data_size[];
172 extern char __bss_start[];
173 extern char __bss_size[];
176 memcpy(__data_start, __data_source, (uintptr_t) __data_size);
177 memset(__bss_start, '\0', (uintptr_t) __bss_size);
180 if (ao_boot_check_chain()) {
182 if (ao_boot_check_pin())
185 ao_boot_chain(AO_BOOT_APPLICATION_BASE);
189 #if RELOCATE_INTERRUPT
190 memcpy(__interrupt_ram, __interrupt_vector, sizeof(__interrupt_ram));
191 lpc_scb.sysmemremap = LPC_SCB_SYSMEMREMAP_MAP_RAM << LPC_SCB_SYSMEMREMAP_MAP;