diff options
Diffstat (limited to 'src/lpc/ao_interrupt.c')
| -rw-r--r-- | src/lpc/ao_interrupt.c | 155 |
1 files changed, 155 insertions, 0 deletions
diff --git a/src/lpc/ao_interrupt.c b/src/lpc/ao_interrupt.c new file mode 100644 index 00000000..b5e67007 --- /dev/null +++ b/src/lpc/ao_interrupt.c @@ -0,0 +1,155 @@ +/* + * Copyright © 2013 Keith Packard <keithp@keithp.com> + * + * 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. + * + * This program 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 this program; if not, write to the Free Software Foundation, Inc., + * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. + */ + +#include <ao.h> +#include <string.h> + +extern void main(void); +extern char __stack__; +extern char __text_start__, __text_end__; +extern char __data_start__, __data_end__; +extern char __bss_start__, __bss_end__; + +/* Interrupt functions */ + +void lpc_halt_isr(void) +{ + ao_panic(AO_PANIC_CRASH); +} + +void lpc_ignore_isr(void) +{ +} + +int x; + +void start(void) { + x = 0; + memcpy(&__data_start__, &__text_end__, &__data_end__ - &__data_start__); + memset(&__bss_start__, '\0', &__bss_end__ - &__bss_start__); + main(); +} + +#define STRINGIFY(x) #x + +#define isr(name) \ + void __attribute__ ((weak)) lpc_ ## name ## _isr(void); \ + _Pragma(STRINGIFY(weak lpc_ ## name ## _isr = lpc_ignore_isr)) + +#define isr_halt(name) \ + void __attribute__ ((weak)) lpc_ ## name ## _isr(void); \ + _Pragma(STRINGIFY(weak lpc_ ## name ## _isr = lpc_halt_isr)) + +isr(nmi) +isr_halt(hardfault) +isr_halt(memmanage) +isr_halt(busfault) +isr_halt(usagefault) +isr(svc) +isr(debugmon) +isr(pendsv) +isr(systick) + +isr(pin_int0) /* IRQ0 */ +isr(pin_int1) +isr(pin_int2) +isr(pin_int3) +isr(pin_int4) /* IRQ4 */ +isr(pin_int5) +isr(pin_int6) +isr(pin_int7) + +isr(gint0) /* IRQ8 */ +isr(gint1) +isr(ssp1) +isr(i2c) + +isr(ct16b0) /* IRQ16 */ +isr(ct16b1) +isr(ct32b0) +isr(ct32b1) +isr(ssp0) /* IRQ20 */ +isr(usart) +isr(usb_irq) +isr(usb_fiq) + +isr(adc) /* IRQ24 */ +isr(wwdt) +isr(bod) +isr(flash) + +isr(usb_wakeup) + +#define i(addr,name) [(addr)/4] = lpc_ ## name ## _isr +#define c(addr,value) [(addr)/4] = (value) + +__attribute__ ((section(".interrupt"))) +const void *lpc_interrupt_vector[] = { + [0] = &__stack__, + [1] = start, + i(0x08, nmi), + i(0x0c, hardfault), + c(0x10, 0), + c(0x14, 0), + c(0x18, 0), + c(0x1c, 0), + c(0x20, 0), + c(0x24, 0), + c(0x28, 0), + i(0x2c, svc), + i(0x30, hardfault), + i(0x34, hardfault), + i(0x38, pendsv), + i(0x3c, systick), + + i(0x40, pin_int0), /* IRQ0 */ + i(0x44, pin_int1), + i(0x48, pin_int2), + i(0x4c, pin_int3), + i(0x50, pin_int4), /* IRQ4 */ + i(0x54, pin_int5), + i(0x58, pin_int6), + i(0x5c, pin_int7), + + i(0x60, gint0), /* IRQ8 */ + i(0x64, gint1), + i(0x68, hardfault), + i(0x6c, hardfault), + i(0x70, hardfault), /* IRQ12 */ + i(0x74, hardfault), + i(0x78, ssp1), + i(0x7c, i2c), + + i(0x80, ct16b0), /* IRQ16 */ + i(0x84, ct16b1), + i(0x88, ct32b0), + i(0x8c, ct32b1), + i(0x90, ssp0), /* IRQ20 */ + i(0x94, usart), + i(0x98, usb_irq), + i(0x9c, usb_fiq), + + i(0xa0, adc), /* IRQ24 */ + i(0xa4, wwdt), + i(0xa8, bod), + i(0xac, flash), + + i(0xb0, hardfault), /* IRQ28 */ + i(0xb4, hardfault), + i(0xb8, usb_wakeup), + i(0xbc, hardfault), +}; |