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build.mak: Improve and streamline .SFO creation

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The current state of building .SFO binaries is rather primitive --
as it stood, build.mak forced its own flags to be used, always.
If you were building without PSP_LARGE_MEMORY, build.mak would use
a deprecated tool for generation as well, one that cobbles together
undocumented flags in an array of bytes and shoves it into a file.

The first change this commit makes is by enabling use of the "new"
mkfsoex, which creates a smaller but still bootable SFO without
any arguments given. Developers are now able to provide custom
SFO flags now using this, added via `SFOFLAGS` in their Makefile.

This means that developers can now (at their own discretion) provide
custom region information, parental control level, minimum firmware
boot level, etc. with:

```make
SFOFLAGS = -d REGION=16394 -d PARENTAL_LEVEL=4 -s PSP_SYSTEM_VER=4.01
```

As a side-effect, this also makes the SDK more adapted to new
custom firmware releases that may add new SFO flags.

The second change made is turning `PSP_LARGE_MEMORY` into an opt-out
/enabled by default flag if developers are targeting a firmware
version newer than 3.90. Custom firmware versions starting from
4.01 M33 guard against expanding the user memory partition to 52mB
if the unit detected is PSP-1000. Therefore having this check in
place becomes redundant, potentially complicating Makefiles. A
warning is printed out allowing developers to be aware of this fact
and removing the flag from their Makefile.
This commit is contained in:
Steam Deck User
2023-04-14 10:55:00 -04:00
parent 5f2af5d358
commit e87d3fa804
1 changed files with 20 additions and 6 deletions
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26
src/base/build.mak
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@@ -21,7 +21,7 @@ LD = psp-gcc
AR = psp-gcc-ar
RANLIB = psp-gcc-ranlib
STRIP = psp-strip
MKSFO = mksfo
MKSFO = mksfoex
PACK_PBP = pack-pbp
FIXUP = psp-fixup-imports
ENC = PrxEncrypter
@@ -34,14 +34,28 @@ CFLAGS := $(addprefix -I,$(INCDIR)) -G0 $(CFLAGS)
CXXFLAGS := $(CFLAGS) $(CXXFLAGS)
ASFLAGS := $(CFLAGS) $(ASFLAGS)
ifeq ($(PSP_LARGE_MEMORY),1)
MKSFO = mksfoex -d MEMSIZE=1
endif
ifeq ($(PSP_FW_VERSION),)
PSP_FW_VERSION=150
endif
# CFW versions after M33 3.90 guard against expanding the
# user memory partition on PSP-1000, making MEMSIZE obsolete.
# It is now an opt-out policy with PSP_LARGE_MEMORY=0
ifeq ($(shell test $(PSP_FW_VERSION) -gt 390; echo $$?),0)
ifeq ($(PSP_LARGE_MEMORY),1)
$(warning "PSP_LARGE_MEMORY" flag is not necessary targeting firmware versions above 3.90)
else ifeq ($(PSP_LARGE_MEMORY),0)
SFOFLAGS := -d MEMSIZE=0 $(SFOFLAGS)
else
SFOFLAGS := -d MEMSIZE=1 $(SFOFLAGS)
endif
else
ifeq ($(PSP_LARGE_MEMORY),1)
SFOFLAGS := -d MEMSIZE=1 $(SFOFLAGS)
endif
endif
CFLAGS += -D_PSP_FW_VERSION=$(PSP_FW_VERSION)
CXXFLAGS += -D_PSP_FW_VERSION=$(PSP_FW_VERSION)
@@ -152,7 +166,7 @@ $(TARGET_LIB): $(OBJS)
$(RANLIB) $@
$(PSP_EBOOT_SFO):
$(MKSFO) '$(PSP_EBOOT_TITLE)' $@
$(MKSFO) $(SFOFLAGS) '$(PSP_EBOOT_TITLE)' $@
ifeq ($(BUILD_PRX),1)
$(PSP_EBOOT): $(TARGET).prx $(PSP_EBOOT_SFO)