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ARM: provide a valid exception stack address for startup code

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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>
This commit is contained in:
Lothar Waßmann
2017-06-08 10:16:36 +02:00
committed by Tom Rini
parent c88823612d
commit 69c5d76f2f
1 changed files with 4 additions and 1 deletions
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5
arch/arm/lib/vectors.S
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@@ -117,7 +117,6 @@ data_abort:
not_used:
irq:
fiq:
1:
bl 1b /* hang and never return */
@@ -126,7 +125,11 @@ fiq:
/* 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.