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authorDavid Hendricks <dhendrix@chromium.org>2012-11-05 12:34:09 -0800
committerDavid Hendricks <dhendrix@chromium.org>2012-11-27 02:03:03 +0100
commit6b908d08ab4c256b6a8d4f7d863fe9eb65ea6fe3 (patch)
tree3890f15a64b2d3ab2917bc3baf633f7489a210d0
parentd5d340695b84ef6351818236dc514cd9734e87b1 (diff)
downloadcoreboot-6b908d08ab4c256b6a8d4f7d863fe9eb65ea6fe3.tar.xz
Make POST codes written to IO port optional
This adds more configurability to POST codes. The current assumption is that POST codes should be written to an IO port (e.g. LPC) if POST codes are enabled. This changes the assumption so that POST codes can be written to the serial console without being written to an IO port. This enables POST codes by default using "default y" to avoid changing current behavior. Change-Id: I3db91c358ccb1557096983c4d07f70b2e872c4b3 Signed-off-by: David Hendricks <dhendrix@chromium.org> Reviewed-on: http://review.coreboot.org/1685 Reviewed-by: Ronald G. Minnich <rminnich@gmail.com> Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
-rw-r--r--src/console/Kconfig20
-rw-r--r--src/console/post.c4
2 files changed, 19 insertions, 5 deletions
diff --git a/src/console/Kconfig b/src/console/Kconfig
index c1c201227f..303a81d0be 100644
--- a/src/console/Kconfig
+++ b/src/console/Kconfig
@@ -360,9 +360,6 @@ config NO_POST
bool "Don't show any POST codes"
default n
-config POST_PORT
- hex
- default 0x80
config CONSOLE_POST
bool "Show POST codes on the debug console"
@@ -391,5 +388,20 @@ config CMOS_POST_OFFSET
If CONFIG_HAVE_OPTION_TABLE is enabled then it will use the value
defined in the mainboard option table.
-endmenu
+config IO_POST
+ bool "Send POST codes to an IO port"
+ default y
+ help
+ If enabled, POST codes will be written to an IO port.
+config IO_POST_PORT
+ depends on IO_POST
+ hex "IO port for POST codes"
+ default 0x80
+ help
+ POST codes on x86 are typically written to the LPC bus on port
+ 0x80. However, it may be desireable to change the port number
+ depending on the presence of coprocessors/microcontrollers or if the
+ platform does not support IO in the conventional x86 manner.
+
+endmenu
diff --git a/src/console/post.c b/src/console/post.c
index a565c6bcfb..81a9d398c7 100644
--- a/src/console/post.c
+++ b/src/console/post.c
@@ -100,7 +100,9 @@ void post_code(uint8_t value)
#if CONFIG_CMOS_POST
cmos_post_code(value);
#endif
- outb(value, CONFIG_POST_PORT);
+#if CONFIG_IO_POST
+ outb(value, CONFIG_IO_POST_PORT);
+#endif
#endif
mainboard_post(value);
}