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| author | Simon Glass <sjg@chromium.org> | 2013-04-17 16:13:34 +0000 |
|---|---|---|
| committer | Simon Glass <sjg@chromium.org> | 2013-05-13 13:33:20 -0700 |
| commit | c78a62acdfbc0a1cc75ee934f7897b9e99bd3e8d (patch) | |
| tree | 16420e7fc6498f05676977beeca8dab55d656e73 | |
| parent | 7282d834cd47cabc481a5cbe6e686ef40751436f (diff) | |
| download | olio-uboot-2014.01-c78a62acdfbc0a1cc75ee934f7897b9e99bd3e8d.tar.xz olio-uboot-2014.01-c78a62acdfbc0a1cc75ee934f7897b9e99bd3e8d.zip | |
x86: Implement panic output for coreboot
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>
| -rw-r--r-- | arch/x86/cpu/coreboot/coreboot.c | 10 | ||||
| -rw-r--r-- | arch/x86/include/asm/u-boot-x86.h | 1 |
2 files changed, 11 insertions, 0 deletions
diff --git a/arch/x86/cpu/coreboot/coreboot.c b/arch/x86/cpu/coreboot/coreboot.c index f8e28f0c8..4a7dae493 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 ae0c3883e..5a59db61b 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 *); |