diff options
| author | Simon Glass <sjg@chromium.org> | 2021-06-27 17:51:01 -0600 |
|---|---|---|
| committer | Bin Meng <bmeng.cn@gmail.com> | 2021-07-15 19:50:00 +0800 |
| commit | 92873f83d19fa8cedcace2b4c384e6b89ffd5faf (patch) | |
| tree | 831b4cb5c7d2d7a4e97485b91ba6a291c08db3bd /arch/x86 | |
| parent | bca2d579f415140adcf984c5517aa2d14af2c0db (diff) | |
| download | u-boot-92873f83d19fa8cedcace2b4c384e6b89ffd5faf.tar.gz | |
x86: Don't set up MTRRs if previously done
When starting U-Boot from a previous-stage bootloader we presumably don't
need to set up the variable MTRRs. In fact this could be harmful if the
existing settings are not what U-Boot uses.
Skip that step in this case.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Diffstat (limited to 'arch/x86')
| -rw-r--r-- | arch/x86/cpu/i386/cpu.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/cpu/i386/cpu.c b/arch/x86/cpu/i386/cpu.c index e59215cc20..c7f6c5a013 100644 --- a/arch/x86/cpu/i386/cpu.c +++ b/arch/x86/cpu/i386/cpu.c @@ -423,7 +423,7 @@ static void setup_mtrr(void) u64 mtrr_cap; /* Configure fixed range MTRRs for some legacy regions */ - if (!gd->arch.has_mtrr) + if (!gd->arch.has_mtrr || !ll_boot_init()) return; mtrr_cap = native_read_msr(MTRR_CAP_MSR); |