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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>
tags/2020-06-01
Lothar Waßmann 4 years ago
committed by Tom Rini
parent
commit
69c5d76f2f
1 changed files with 4 additions and 1 deletions
  1. +4
    -1
      arch/arm/lib/vectors.S

+ 4
- 1
arch/arm/lib/vectors.S View File

@@ -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.