altos: Add STM ao_arch_reboot implementation

Uses the AIRCR register to force a reset

Signed-off-by: Keith Packard <keithp@keithp.com>

diff --git a/src/stm/ao_arch.h b/src/stm/ao_arch.h
index dd9579f1093252b303cfff84506ebb68d5734b6b..adb6eb947a30daec3e4c6ff02c051ff3f5e69fc8 100644 (file)
--- a/src/stm/ao_arch.h
+++ b/src/stm/ao_arch.h
@@ -42,7 +42,9 @@
 #define __interrupt(n)
 #define __at(n)
 
-#define ao_arch_reboot()       /* XXX */
+#define CORTEX_M3_AIRCR                ((uint32_t *) 0xe000ed0c)
+
+#define ao_arch_reboot()       (*((uint32_t *) 0xe000ed0c) = 0x05fa0004)
 
 #define ao_arch_nop()          asm("nop")