ARM: provide a valid exception stack address for startup code
Create exception stack in IRAM if available to facilitate debugging of
pre-relocation code by catching exceptions rather than stopping dead.
Signed-off-by: Lothar Waßmann <LW@KARO-electronics.de>
diff --git a/arch/arm/lib/vectors.S b/arch/arm/lib/vectors.S
index f53b1e9..1019091 100644
--- a/arch/arm/lib/vectors.S
+++ b/arch/arm/lib/vectors.S
@@ -117,7 +117,6 @@
not_used:
irq:
fiq:
-
1:
bl 1b /* hang and never return */
@@ -126,7 +125,11 @@
/* IRQ stack memory (calculated at run-time) + 8 bytes */
.globl IRQ_STACK_START_IN
IRQ_STACK_START_IN:
+#ifdef IRAM_BASE_ADDR
+ .word IRAM_BASE_ADDR + 0x20
+#else
.word 0x0badc0de
+#endif
@
@ IRQ stack frame.