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

libpayload/arch/x86: Add support for initializing the APIC

Browse Source 
This is just the bare minimum required to initialize the APIC. I only
support xAPIC and chose not to support x2APIC. We can add that
functionality later when it's required.

I also made the exception dispatcher call apic_eoi so that the callbacks
won't forget to call it.

BUG=b:109749762
TEST=Booted grunt and verified that depthcharge continued to function
and that linux booted correctly. Also verified GDB still works.

Change-Id: I420a4eadae84df088525e727b481089ef615183f
Signed-off-by: Raul E Rangel <rrangel@chromium.org>
Reviewed-on: https://review.coreboot.org/28241
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Martin Roth <martinroth@google.com>
This commit is contained in:
Raul E Rangel
2018-08-20 11:14:44 -06:00
committed by Martin Roth
parent 3d398ad37a
commit ac8ebd0e73
6 changed files with 255 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

7
payloads/libpayload/arch/x86/main.c
View File

@ -29,6 +29,7 @@
#include <exception.h>
#include <libpayload.h>
#include <arch/apic.h>
unsigned long loader_eax; /**< The value of EAX passed from the loader */
unsigned long loader_ebx; /**< The value of EBX passed from the loader */
@ -57,6 +58,12 @@ int start_main(void)
exception_init();
if (IS_ENABLED(CONFIG_LP_ENABLE_APIC)) {
apic_init();
enable_interrupts();
}
/*
* Any other system init that has to happen before the
* user gets control goes here.