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

arch|cpu/x86: Add Kconfig option for x86 reset vector

Browse Source 
Prepare for an implementation supporting the reset vector in RAM and
not the traditional 0xfffffff0.  Add a Kconfig symbol that can be used
in place of hardcoded values.

Change-Id: I6a814f7179ee4251aeeccb2555221616e944e03d
Signed-off-by: Marshall Dawson <marshalldawson3rd@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/37485
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
This commit is contained in:
Marshall Dawson
2019-11-01 17:30:05 -06:00
committed by Patrick Georgi
parent 4ba70a7575
commit 67910db907
6 changed files with 19 additions and 11 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
src/cpu/intel/fit/fit.ld
View File

@@ -12,7 +12,7 @@
*/
SECTIONS {
. = 0xffffffc0;
. = CONFIG_X86_RESET_VECTOR - 0x30; /* 0xffffffc0 */
.fit_pointer (.): {
KEEP(*(.fit_pointer))
}

12
src/cpu/x86/16bit/reset16.ld
View File

@@ -11,16 +11,14 @@
* GNU General Public License for more details.
*/
/*
* _ROMTOP : The top of the ROM used where we
* need to put the reset vector.
*/
/* _RESET_VECTOR: typically the top of the ROM */
SECTIONS {
/* Trigger an error if I have an unuseable start address */
_bogus = ASSERT(_start16bit >= 0xffff0000, "_start16bit too low. Please report.");
_ROMTOP = 0xfffffff0;
. = _ROMTOP;
_TOO_LOW = CONFIG_X86_RESET_VECTOR - 0xfff0;
_bogus = ASSERT(_start16bit >= _TOO_LOW, "_start16bit too low. Please report.");
. = CONFIG_X86_RESET_VECTOR;
.reset . : {
*(.reset);
. = 15;