diff options
| -rw-r--r-- | arch/arc/core/reset.S | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/arch/arc/core/reset.S b/arch/arc/core/reset.S index c6c432cc2..03e947185 100644 --- a/arch/arc/core/reset.S +++ b/arch/arc/core/reset.S @@ -30,6 +30,7 @@ GDATA(_interrupt_stack) GDATA(_firq_stack) +GDATA(_main_stack) /* use one of the available interrupt stacks during init */ @@ -72,6 +73,26 @@ SECTION_FUNC(TEXT,__start) /* lock interrupts: will get unlocked when switch to main task */ clri +#ifdef CONFIG_INIT_STACKS + /* + * use the main stack to call memset on the interrupt stack and the + * FIRQ stack when CONFIG_INIT_STACKS is enabled before switching to + * one of them for the rest of the early boot + */ + mov sp, _main_stack + add sp, sp, CONFIG_MAIN_STACK_SIZE + + mov_s r0, _interrupt_stack + mov_s r1, 0xaa + mov_s r2, CONFIG_ISR_STACK_SIZE + jl memset + + mov_s r0, _firq_stack + mov_s r1, 0xaa + mov_s r2, CONFIG_FIRQ_STACK_SIZE + jl memset +#endif + mov sp, INIT_STACK add sp, sp, INIT_STACK_SIZE |