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authorZheng Bao <fishbaozi@gmail.com>2015-11-21 12:19:22 +0800
committerMartin Roth <martinroth@google.com>2015-11-24 20:57:47 +0100
commit22861385613e34a16ef745917f6956a92243d88b (patch)
tree4994983a5acc00de8340ff9cb260bdf2cc3b66f7 /src/mainboard/amd
parentab1e77fb01df5315fc291a801ca60db2582a111d (diff)
downloadcoreboot-22861385613e34a16ef745917f6956a92243d88b.tar.xz
AMD/bettong: Add UART support
The function delay in uart8250mem.c is not enough for hudson. I guess there are some problems in lapic_timer(). I uploaded a patch to gerrit to show the way to enable UART feature. http://review.coreboot.org/#/c/12343/4 Currently the HUDSON_UART is unchecked by default. Select HUDSON_UART to enable this feature. The UART is test at BIOS stage. Since it is not a standart UART device, the windows internal UART driver doesnt support it. I guess we need a driver to use it on windows. Change-Id: I4cec833cc2ff8069c82886837f7cbd4483ff11bb Signed-off-by: Zheng Bao <zheng.bao@amd.com> Signed-off-by: Zheng Bao <fishbaozi@gmail.com> Reviewed-on: http://review.coreboot.org/11749 Tested-by: build bot (Jenkins) Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Diffstat (limited to 'src/mainboard/amd')
-rw-r--r--src/mainboard/amd/bettong/romstage.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/src/mainboard/amd/bettong/romstage.c b/src/mainboard/amd/bettong/romstage.c
index 6399804ac2..b0ec8fdc19 100644
--- a/src/mainboard/amd/bettong/romstage.c
+++ b/src/mainboard/amd/bettong/romstage.c
@@ -39,6 +39,9 @@ void cache_as_ram_main(unsigned long bist, unsigned long cpu_init_detectedx)
if (!cpu_init_detectedx && boot_cpu()) {
post_code(0x30);
+#if IS_ENABLED(CONFIG_HUDSON_UART)
+ configure_hudson_uart();
+#endif
post_code(0x31);
console_init();
}