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lib/Makefile.inc: Generate placeholder spd.bin in lib/Makefile.inc 

When a new variant is created, it needs to have a path to its SPD binary
defined. Currently, this is done by setting SPD_SOURCES to a placeholder
SPD file, which just contains zero bytes.

To remove the need for a placeholder file, automatically generate a
single-byte spd.bin in lib/Makefile.inc when SPD_SOURCES is set to the
marker value 'placeholder'.

BUG=b:191776301
TEST=Change cappy/memory/Makefile to `SPD_SOURCES = placeholder`. Build
and check that spd.bin contains a single zero byte.

Signed-off-by: Reka Norman <rekanorman@google.com>
Change-Id: I11f8f9b7ea3bc32aa5c7a617558572a5c1c74c72
Reviewed-on: https://review.coreboot.org/c/coreboot/+/57795
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
This commit is contained in:
Reka Norman 2021-09-21 14:29:24 +10:00 committed by Patrick Georgi
parent c2800a5a60
commit bdc49b2de3
2 changed files with 12 additions and 40 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

32
spd/spd-placeholder.hex
View File

@ -1,32 +0,0 @@
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

6
src/lib/Makefile.inc
View File

@ -366,6 +366,9 @@ $(LIB_SPD_BIN): $(LIB_SPD_DEPS)
(echo "HAVE_SPD_IN_CBFS is set but SPD_SOURCES is empty" && exit 1)
test -n "$(LIB_SPD_DEPS)" || \
(echo "SPD_SOURCES is set but no SPD file was found" && exit 1)
if [ "$(SPD_SOURCES)" = "placeholder" ]; then \
printf '\0'; \
else \
for f in $(LIB_SPD_DEPS); do \
if [ ! -f $$f ]; then \
echo "File not found: $$f" >&2; \
@ -374,7 +377,8 @@ $(LIB_SPD_BIN): $(LIB_SPD_DEPS)
for c in $$(cat $$f | grep --binary-files=text -v ^#); \
do printf $$(printf '\\%o' 0x$$c); \
done; \
done > $@
done; \
fi > $@
cbfs-files-y += spd.bin
spd.bin-file := $(LIB_SPD_BIN)