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x86: Use mtrr_commit() with FSP2

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With FSP2 we use MTRRs in U-Boot proper even though the 32-bit init
happens in TPL. Enable this, using a variable to try to make the
conditions more palatable.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
This commit is contained in:
Simon Glass 2019-09-25 08:56:49 -06:00 committed by Bin Meng
parent b377ebbd5b
commit cc2d27dcdc
1 changed files with 15 additions and 7 deletions
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22
arch/x86/lib/init_helpers.c
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@ -12,15 +12,23 @@ DECLARE_GLOBAL_DATA_PTR;
int init_cache_f_r(void)
{
#if CONFIG_IS_ENABLED(X86_32BIT_INIT) && !defined(CONFIG_HAVE_FSP) && \
!defined(CONFIG_SYS_SLIMBOOTLOADER)
bool do_mtrr = CONFIG_IS_ENABLED(X86_32BIT_INIT) ||
IS_ENABLED(CONFIG_FSP_VERSION2);
int ret;
ret = mtrr_commit(false);
/* If MTRR MSR is not implemented by the processor, just ignore it */
if (ret && ret != -ENOSYS)
return ret;
#endif
do_mtrr &= !IS_ENABLED(CONFIG_FSP_VERSION1) &&
!IS_ENABLED(CONFIG_SYS_SLIMBOOTLOADER);
if (do_mtrr) {
ret = mtrr_commit(false);
/*
* If MTRR MSR is not implemented by the processor, just ignore
* it
*/
if (ret && ret != -ENOSYS)
return ret;
}
/* Initialise the CPU cache(s) */
return init_cache();
}