x86: Update mtrr functions to allow leaving cache alone
At present the mtrr functions disable the cache before making changes and
enable it again afterwards. This is fine in U-Boot, but does not work if
running in CAR (such as we are in SPL).
Update the functions so that the caller can request that caches be left
alone.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
diff --git a/cmd/x86/mtrr.c b/cmd/x86/mtrr.c
index 70f373a..d3fd959 100644
--- a/cmd/x86/mtrr.c
+++ b/cmd/x86/mtrr.c
@@ -73,10 +73,10 @@
mask |= MTRR_PHYS_MASK_VALID;
printf("base=%llx, mask=%llx\n", base, mask);
- mtrr_open(&state);
+ mtrr_open(&state, true);
wrmsrl(MTRR_PHYS_BASE_MSR(reg), base);
wrmsrl(MTRR_PHYS_MASK_MSR(reg), mask);
- mtrr_close(&state);
+ mtrr_close(&state, true);
return 0;
}
@@ -86,14 +86,14 @@
struct mtrr_state state;
uint64_t mask;
- mtrr_open(&state);
+ mtrr_open(&state, true);
mask = native_read_msr(MTRR_PHYS_MASK_MSR(reg));
if (valid)
mask |= MTRR_PHYS_MASK_VALID;
else
mask &= ~MTRR_PHYS_MASK_VALID;
wrmsrl(MTRR_PHYS_MASK_MSR(reg), mask);
- mtrr_close(&state);
+ mtrr_close(&state, true);
return 0;
}