diff options
| author | Raul E Rangel <rrangel@chromium.org> | 2021-09-21 10:56:35 -0600 |
|---|---|---|
| committer | Felix Held <felix-coreboot@felixheld.de> | 2021-09-24 17:11:54 +0000 |
| commit | 333652c5b2dd3291a73f922e0b86c3ab9612f4b1 (patch) | |
| tree | 46ac8abe4ad1a0db3a3b9709272884820c0393c9 /src/cpu/x86 | |
| parent | 5ef58735764c2eb8d3593b61f9dd122f2f3d6e44 (diff) | |
cpu/x86/mp_init: Add comment to smm_do_relocation
It took me a while to understand the SMM set up flow. This adds a
clarifying comment.
BUG=b:194391185, b:179699789
TEST=None
Signed-off-by: Raul E Rangel <rrangel@chromium.org>
Change-Id: I9c73e416b8c583cf870e7a29b0bd7dcc99c2f5f4
Reviewed-on: https://review.coreboot.org/c/coreboot/+/57858
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-by: Paul Menzel <paulepanter@mailbox.org>
Diffstat (limited to 'src/cpu/x86')
| -rw-r--r-- | src/cpu/x86/mp_init.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/src/cpu/x86/mp_init.c b/src/cpu/x86/mp_init.c index aa037f3001..f54a7b714d 100644 --- a/src/cpu/x86/mp_init.c +++ b/src/cpu/x86/mp_init.c @@ -714,6 +714,11 @@ static void smm_enable(void) mp_state.do_smm = 1; } +/* + * This code is built as part of ramstage, but it actually runs in SMM. This + * means that ENV_SMM is 0, but we are actually executing in the environment + * setup by the smm_stub. + */ static void asmlinkage smm_do_relocation(void *arg) { const struct smm_module_params *p; |