sravan/system76-coreboot
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

make early serial console support more generic

Browse Source 
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)
This commit is contained in:
David Hendricks
2012-12-31 17:28:43 -08:00
committed by Ronald G. Minnich
parent 10c90d3126
commit 6a503b6a0f
9 changed files with 33 additions and 12 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
src/console/console.c
View File

@ -99,13 +99,15 @@ int console_tst_byte(void)
#else // __PRE_RAM__ ^^^ NOT defined vvv defined
#include <uart.h>
void console_init(void)
{
#if CONFIG_USBDEBUG
enable_usbdebug(CONFIG_USBDEBUG_DEFAULT_PORT);
early_usbdebug_init();
#endif
#if CONFIG_CONSOLE_SERIAL8250
#if CONFIG_HAVE_UART_IO_MAPPED || CONFIG_HAVE_UART_MEMORY_MAPPED
uart_init();
#endif
#if CONFIG_DRIVERS_OXFORD_OXPCIE && CONFIG_CONSOLE_SERIAL8250MEM