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util/cbfstool: Add AMD BIOS compression tool for PSP

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Add a utility to generate a compressed BIOS image for AMD Family 17h.

If the input is an elf file, the utility extracts the program portion
for compression.  Otherwise the file is compressed as-is.

In modern AMD systems, the PSP brings up DRAM then uncompresses the
BIOS image into memory prior to x86 beginning execution.  The PSP
supports a zlib engine, and interprets the first 256 bytes as a
header, where offset 0x14 containing the uncompressed size.  For
further details, see AMD Platform Security Processor BIOS Architecture
Design Guide for AMD Family 17h Processors (NDA only, #55758).

BUG=b:127766506
TEST=Use with WIP Picasso

Change-Id: Id1c54e0a6dae9e4a0362c6635fe8b8aa48a369d8
Signed-off-by: Marshall Dawson <marshalldawson3rd@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/33401
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Raul Rangel <rrangel@chromium.org>
Reviewed-by: Edward O'Callaghan <quasisec@chromium.org>
This commit is contained in:
Marshall Dawson
2019-03-19 14:48:33 -06:00
committed by Martin Roth
parent 5e4a26a76e
commit 30cf155168
3 changed files with 379 additions and 1 deletions
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10
util/cbfstool/Makefile.inc
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@@ -98,6 +98,12 @@ cbfscompobj :=
cbfscompobj += $(compressionobj)
cbfscompobj += cbfscomptool.o
amdcompobj :=
amdcompobj += amdcompress.o
amdcompobj += elfheaders.o
amdcompobj += common.o
amdcompobj += xdr.o
TOOLCFLAGS ?= -Werror -Wall -Wextra
TOOLCFLAGS += -Wcast-qual -Wmissing-prototypes -Wredundant-decls -Wshadow
TOOLCFLAGS += -Wstrict-prototypes -Wwrite-strings
@@ -185,6 +191,10 @@ $(objutil)/cbfstool/cbfs-compression-tool: $(addprefix $(objutil)/cbfstool/,$(cb
printf " HOSTCC $(subst $(objutil)/,,$(@)) (link)\n"
$(HOSTCC) $(TOOLLDFLAGS) -o $@ $(addprefix $(objutil)/cbfstool/,$(cbfscompobj))
$(objutil)/cbfstool/amdcompress: $(addprefix $(objutil)/cbfstool/,$(amdcompobj))
printf " HOSTCC $(subst $(objutil)/,,$(@)) (link)\n"
$(HOSTCC) $(TOOLLDFLAGS) -o $@ $(addprefix $(objutil)/cbfstool/,$(amdcompobj)) -lz
# Yacc source is superset of header
$(objutil)/cbfstool/fmd.o: TOOLCFLAGS += -Wno-redundant-decls
$(objutil)/cbfstool/fmd_parser.o: TOOLCFLAGS += -Wno-redundant-decls