diff options
| author | Arthur Heymans <arthur@aheymans.xyz> | 2022-05-24 08:46:09 +0200 |
|---|---|---|
| committer | Lean Sheng Tan <sheng.tan@9elements.com> | 2023-04-06 15:19:00 +0000 |
| commit | 71bc9f0eba4fce8ffa2b0b90e388f3596ffb6a5d (patch) | |
| tree | 55a6762b4b59e78f88a365cc2203a62749293965 /src/cpu/x86/Makefile.inc | |
| parent | 21ca7753bf619f1de8dca79fd1113a9c22335f11 (diff) | |
cpu/x86/mp_init.c: Generate a C header to get start32 offset
In the current design the relocatable parameters are used to know the
offset of the 32bit startpoint. This requires back and forward
interaction between the stub, the loader and the mp init code. This
makes the code hard to read.
This is static information known at buildtime, so a better way to deal
with this is to generate a header that contains this offset.
Change-Id: Ic01badd2af11a6e1dbc27c8e928916fedf104b5b
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/64625
Reviewed-by: Patrick Rudolph <siro@das-labor.org>
Reviewed-by: Maximilian Brune <maximilian.brune@9elements.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Diffstat (limited to 'src/cpu/x86/Makefile.inc')
| -rw-r--r-- | src/cpu/x86/Makefile.inc | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/src/cpu/x86/Makefile.inc b/src/cpu/x86/Makefile.inc index 3ef3a90313..2381b6fa20 100644 --- a/src/cpu/x86/Makefile.inc +++ b/src/cpu/x86/Makefile.inc @@ -8,6 +8,20 @@ subdirs-$(CONFIG_ARCH_BOOTBLOCK_X86_64) += 64bit subdirs-y += cache subdirs-$(CONFIG_PARALLEL_MP) += name + +ifeq ($(CONFIG_HAVE_SMI_HANDLER),y) +$(obj)/ramstage/cpu/x86/smm_start32_offset.h: $(dir)/smm_start32_offset.h.template $(obj)/smmstub/smmstub.elf + cp $< $@.temp + sed -i 's/##START32_OFFSET##/0x'$$($(NM_smmstub) -an $(obj)/smmstub/smmstub.elf | grep smm_trampolin | cut -d' ' -f1)'/' $@.temp + mv $@.temp $@ +else +$(obj)/ramstage/cpu/x86/smm_start32_offset.h: $(dir)/smm_start32_offset.h.template + cp $< $@.temp + sed -i 's/##START32_OFFSET##/0x0/' $@.temp + mv $@.temp $@ +endif + +$(call src-to-obj,ramstage,$(dir)/mp_init.c): $(obj)/ramstage/cpu/x86/smm_start32_offset.h ramstage-$(CONFIG_PARALLEL_MP) += mp_init.c ramstage-y += backup_default_smm.c |