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libpayload: Add x86_64 (64-bit) support

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This patch introduces x86_64 (64-bit) support to the payload, building
upon the existing x86 (32-bit) architecture. Files necessary for 64-bit
compilation are now guarded by the `CONFIG_LP_ARCH_X86_64` Kconfig
option.

BUG=b:242829490
TEST=Able to verify all valid combinations between coreboot and
payload with this patch.

Payload Entry Point Behavior with below code.

+----------------+--------------------+----------------------------+
| LP_ARCH_X86_64 | Payload Entry Mode | Description                |
+----------------+--------------------+----------------------------+
| No             | 32-bit             | Direct protected mode init |
+----------------+--------------------+----------------------------+
| Yes            | 32-bit             | Protected to long mode     |
+----------------+--------------------+----------------------------+
| Yes            | 64-bit             | Long mode initialization   |
+----------------+--------------------+----------------------------+

Change-Id: I69fda47bedf1a14807b1515c4aed6e3a1d5b8585
Signed-off-by: Subrata Banik <subratabanik@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/81968
Reviewed-by: Julius Werner <jwerner@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
This commit is contained in:
Subrata Banik
2024-05-18 12:26:40 +00:00
parent 4244527d8c
commit afa39105d8
18 changed files with 686 additions and 58 deletions
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8
payloads/libpayload/Makefile.mk
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@@ -96,7 +96,7 @@ $(obj)/libpayload-config.h: $(KCONFIG_AUTOHEADER) $(obj)/libpayload.config
cmp $@ $< 2>/dev/null || cp $< $@
library-targets = $(addsuffix .a,$(addprefix $(obj)/,$(libraries))) $(obj)/libpayload.a
lib: $$(library-targets)
lib: $$(library-targets) $(obj)/libpayload.ldscript
extract_nth=$(word $(1), $(subst |, ,$(2)))
@@ -115,11 +115,15 @@ $(obj)/%.a: $$(%-objs)
printf " AR $(subst $(CURDIR)/,,$(@))\n"
printf "create $@\n$(foreach objc,$(filter-out %.a,$^),addmod $(objc)\n)$(foreach lib,$(filter %.a,$^),addlib $(lib)\n)save\nend\n" | $(AR) -M
$(obj)/libpayload.ldscript: arch/$(ARCHDIR-y)/libpayload.ldscript
@printf " LDSCRIPT $@\n"
$(CC) $(CFLAGS) $(EXTRA_CFLAGS) -E -P -x assembler-with-cpp -undef -o $@ $<
install: real-target
printf " INSTALL $(DESTDIR)/libpayload/lib\n"
install -m 755 -d $(DESTDIR)/libpayload/lib
install -m 644 $(library-targets) $(DESTDIR)/libpayload/lib/
install -m 644 arch/$(ARCHDIR-y)/libpayload.ldscript $(DESTDIR)/libpayload/lib/
install -m 644 $(obj)/libpayload.ldscript $(DESTDIR)/libpayload/lib/
install -m 755 -d $(DESTDIR)/libpayload/lib/$(ARCHDIR-y)
printf " INSTALL $(DESTDIR)/libpayload/include\n"
install -m 755 -d $(DESTDIR)/libpayload/include