panic_puts() can be called in early boot to display a message. It might help with early debugging.
Signed-off-by: Simon Glass sjg@chromium.org Reviewed-by: Tom Wai-Hong Tam waihong@chromium.org --- arch/x86/cpu/coreboot/coreboot.c | 10 ++++++++++ arch/x86/include/asm/u-boot-x86.h | 1 + 2 files changed, 11 insertions(+)
diff --git a/arch/x86/cpu/coreboot/coreboot.c b/arch/x86/cpu/coreboot/coreboot.c index f8e28f0..4a7dae49 100644 --- a/arch/x86/cpu/coreboot/coreboot.c +++ b/arch/x86/cpu/coreboot/coreboot.c @@ -26,6 +26,7 @@ #include <asm/u-boot-x86.h> #include <flash.h> #include <netdev.h> +#include <ns16550.h> #include <asm/msr.h> #include <asm/cache.h> #include <asm/io.h> @@ -135,3 +136,12 @@ int board_final_cleanup(void)
return 0; } + +void panic_puts(const char *str) +{ + NS16550_t port = (NS16550_t)0x3f8; + + NS16550_init(port, 1); + while (*str) + NS16550_putc(port, *str++); +} diff --git a/arch/x86/include/asm/u-boot-x86.h b/arch/x86/include/asm/u-boot-x86.h index ae0c388..5a59db6 100644 --- a/arch/x86/include/asm/u-boot-x86.h +++ b/arch/x86/include/asm/u-boot-x86.h @@ -33,6 +33,7 @@ void init_gd(gd_t *id, u64 *gdt_addr); void setup_gdt(gd_t *id, u64 *gdt_addr); int init_cache(void); int cleanup_before_linux(void); +void panic_puts(const char *str);
/* cpu/.../timer.c */ void timer_isr(void *);