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authorDavid Hendricks <dhendrix@chromium.org>2012-12-31 17:28:43 -0800
committerRonald G. Minnich <rminnich@gmail.com>2013-01-04 01:36:27 +0100
commit6a503b6a0f08bf4236c4c37d75c67182a7af4b02 (patch)
tree79aaedcb8283cb543fe47072c839de6f22354d7f /src/console/Kconfig
parent10c90d31264b5698320a1ac2666823532d110258 (diff)
downloadcoreboot-6a503b6a0f08bf4236c4c37d75c67182a7af4b02.tar.xz
make early serial console support more generic
This patch makes pre-RAM serial init more generic, particularly for platforms which do not necessarily need cache-as-RAM in order to use the serial console and do not have a standard 8250 serial port. This adds a Kconfig variable to set romstage-* for very early serial console init. The current method assumes that cache-as-RAM should enable this, so to maintain compatibility selecting CACHE_AS_RAM will also select EARLY_SERIAL_CONSOLE. The UART code structure needs some rework, but the use of ROMCC, romstage, and then ramstage makes things complex. uart.h now includes all .h files for all uarts. All 2 of them. This is actually a simplifying change. Change-Id: I089e7af633c227baf3c06c685f005e9d0e4b38ce Signed-off-by: David Hendricks <dhendrix@chromium.org> Signed-off-by: Ronald G. Minnich <rminnich@gmail.com> Reviewed-on: http://review.coreboot.org/2086 Tested-by: build bot (Jenkins)
Diffstat (limited to 'src/console/Kconfig')
-rw-r--r--src/console/Kconfig7
1 files changed, 7 insertions, 0 deletions
diff --git a/src/console/Kconfig b/src/console/Kconfig
index 117fdb890a..b1f41de12b 100644
--- a/src/console/Kconfig
+++ b/src/console/Kconfig
@@ -5,6 +5,13 @@ config SERIAL_CONSOLE
help
Send coreboot debug output to a serial port
+config EARLY_SERIAL_CONSOLE
+ bool
+ depends on SERIAL_CONSOLE
+ default n
+ help
+ Use serial console during early (pre-RAM) boot stages
+
config CONSOLE_SERIAL8250
bool "Serial port console output (I/O mapped, 8250-compatible)"
depends on SERIAL_CONSOLE