Mirrors/u-boot
2
0
Fork 0
mirror of https://github.com/AsahiLinux/u-boot synced 2024-11-25 06:00:43 +00:00
Code Issues Projects Releases Packages Wiki Activity

x86: mtrr: Skip MSRs that were already programmed in mtrr_commit()

Browse source 
At present mtrr_commit() programs the MTRR MSRs starting from
index 0, which may overwrite MSRs that were already programmed
by previous boot stage or FSP.

Switch to call mtrr_set_next_var() instead.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Tested on chromebook_coral, chromebook_samus, chromebook_link, minnowmax
Tested-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Bin Meng 2021-07-31 16:45:25 +08:00
parent 596bd0589a
commit 3bcd6cf89e
1 changed files with 1 additions and 1 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

2
arch/x86/cpu/mtrr.c
View file

@ -155,7 +155,7 @@ int mtrr_commit(bool do_caches)
debug("open done\n");
qsort(req, gd->arch.mtrr_req_count, sizeof(*req), h_comp_mtrr);
for (i = 0; i < gd->arch.mtrr_req_count; i++, req++)
set_var_mtrr(i, req->type, req->start, req->size);
mtrr_set_next_var(req->type, req->start, req->size);
debug("close\n");
mtrr_close(&state, do_caches);