From: Simon Glass sjg@chromium.org
This function used to be for adding a list of requests to be actioned on relocation. Revert it back to this purpose, to avoid problems with boards which need control of their MTRRs (i.e. those which don't use FSP).
The mtrr_set_next_var() function is available when the next free variable-MTRR must be set, so this can be used instead.
Signed-off-by: Simon Glass sjg@chromium.org Reviewed-by: Bin Meng bmeng.cn@gmail.com Fixes: 3bcd6cf89ef ("x86: mtrr: Skip MSRs that were already programmed..") Fixes: 596bd0589ad ("x86: mtrr: Do not clear the unused ones..") Signed-off-by: Bin Meng bmeng.cn@gmail.com
---
(no changes since v1)
arch/x86/cpu/mtrr.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/arch/x86/cpu/mtrr.c b/arch/x86/cpu/mtrr.c index d57fcface0..9c24ae984e 100644 --- a/arch/x86/cpu/mtrr.c +++ b/arch/x86/cpu/mtrr.c @@ -166,8 +166,12 @@ 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++) - mtrr_set_next_var(req->type, req->start, req->size); + set_var_mtrr(i, req->type, req->start, req->size);
+ /* Clear the ones that are unused */ + debug("clear\n"); + for (; i < mtrr_get_var_count(); i++) + wrmsrl(MTRR_PHYS_MASK_MSR(i), 0); debug("close\n"); mtrr_close(&state, do_caches); debug("mtrr done\n");