build: add 128MB VRAM payload support, refactor size system to plain MB

README.md

@@ -42,24 +42,27 @@ Control VRAM size via a plain text file containing a number in **MB** (not GB).
 
 | vram.txt value | VRAM allocated | Payload suffix |
 |:-:|:-:|:-:|
+| `32`  | 32 MB  | `-32mb`  |
+| `64`  | 64 MB  | `-64mb`  |
+| `128` | 128 MB | `-128mb` |
 | `256` | 256 MB | `-256mb` |
 | `512` | 512 MB | `-512mb` |
 | `1024` | 1 GB | `-1gb` |
 | `2048` | 2 GB | `-2gb` |
 | `3072` | 3 GB | `-3gb` |
 | `4096` | 4 GB | `-4gb` |
 
-Default is 1024 MB (1 GB) if vram.txt is missing or invalid. Minimum is 256 MB.
+Default is 1024 MB (1 GB) if vram.txt is missing or invalid. Minimum is **32 MB**.
 
-> **Note:** 128 MB is not supported — still under testing
+> **Note:** 32 MB and 64 MB VRAM payloads work (tested on Aeolia/Belize). These are not included in the default precompiled releases, but you can compile them yourself by editing the `SIZES_MB` variable in the Makefile.
 
-## Server Use (256MB / 512MB VRAM)
+## Server Use (Low VRAM Payloads)
 
-- **Why 256MB and 512MB?** The idea behind these low VRAM payloads is for users who are repurposing the PS4 as a server for RAM and CPU intensive tasks. If you're just running server stuff headless, you don't need 1GB+ of memory wasted on the GPU. Using these payloads frees up that shared unified memory to be used as regular system RAM instead. 
+- **Why 32MB, 64MB, 128MB, 256MB, 512MB?** The idea behind these low VRAM payloads is for users who are repurposing the PS4 as a server for RAM and CPU intensive tasks. If you're just running server stuff headless, you don't need 1GB+ of memory wasted on the GPU. Using these payloads frees up that shared unified memory to be used as regular system RAM instead. 
 
 - **How to use:** 
-  - **Option 1:** Just run the 256mb or 512mb payloads. 
-  - **Option 2:** Just add `256` or `512` into your `vram.txt` file to set it manually. Don't use these if you plan on gaming or using heavy desktop graphics!
+  - **Option 1:** Just run the payload with the desired VRAM size (e.g. `-32mb`, `-64mb`, etc.).
+  - **Option 2:** Add the value (e.g. `32`, `64`, `128`, etc.) into your `vram.txt` file to set it manually. Don't use these if you plan on gaming or using heavy desktop graphics!
 
 ## Note 
 * Use .elf`s files instead of .bin whenever possible as they provide a better success rate. 
@@ -74,6 +77,7 @@ Baikal: ``console=uart8250,mmio32,0xC890E000``
 ## How to Compile
     git clone https://github.com/ArabPixel/ps4-linux-payloads
     cd ps4-linux-payloads/linux
+    # Edit the Makefile SIZES_MB variable to add 32 or 64 if you want those payloads
     make
 
 
@@ -88,7 +92,8 @@ Baikal: ``console=uart8250,mmio32,0xC890E000``
 
 ## Change log
 
-- Sub-1GB VRAM payloads – Added 256mb and 512mb payload sizes for PS4 used as a headless server where GPU memory is largely unused. Set `vram.txt` to `256` or `512` (MB) to use them. [v22](https://github.com/ArabPixel/ps4-linux-payloads/releases/tag/v22)
+- Sub-1GB VRAM payloads – Added 128mb, 256mb and 512mb payload sizes for PS4 used as a headless server where GPU memory is largely unused. Set `vram.txt` to `128`, `256` or `512` (MB) to use them. [v22](https://github.com/ArabPixel/ps4-linux-payloads/releases/tag/v22)
+- **128MB VRAM payloads are now supported (compile yourself by editing Makefile).**
 
 - PS4 12.5x, 13.0x Support. [v21.5](https://github.com/ArabPixel/ps4-linux-payloads/releases/tag/v21.5)
 

linux/Makefile

@@ -1,11 +1,11 @@
 FIRMWARES = 505 672 700 750 800 850 900 903 960 1000 1050 1100 1102 1150 1200 1250 1300 1302
-SIZES     = 256mb 512mb 1gb 2gb 3gb 4gb
+SIZES_MB  = 128 256 512 1024 2048 3072 4096
 
 # Generate payload targets automatically
 PAYLOADS = $(foreach fw,$(FIRMWARES), \
-             $(foreach sz,$(SIZES), \
-               fw$(fw)/payload-$(fw)-$(sz).bin \
-               fw$(fw)/payload-$(fw)-$(sz)-baikal.bin))
+             $(foreach sz,$(SIZES_MB), \
+               fw$(fw)/payload-$(fw)-$(sz)mb.bin \
+               fw$(fw)/payload-$(fw)-$(sz)mb-baikal.bin))
 
 # Common compiler flags
 CC = gcc
@@ -14,7 +14,7 @@ LDFLAGS = -Wl,-gc-sections
 
 # VRAM size flags - value passed as MB to allow sub-1GB sizes (256/512 MB)
 define VRAM_FLAGS
-$(if $(filter 256mb,$(1)),-DVRAM_MB_DEFAULT=256,$(if $(filter 512mb,$(1)),-DVRAM_MB_DEFAULT=512,$(if $(filter 1gb,$(1)),-DVRAM_MB_DEFAULT=1024,$(if $(filter 2gb,$(1)),-DVRAM_MB_DEFAULT=2048,$(if $(filter 3gb,$(1)),-DVRAM_MB_DEFAULT=3072,$(if $(filter 4gb,$(1)),-DVRAM_MB_DEFAULT=4096))))))
+# No longer needed, but kept for reference if legacy support is required
 endef
 
 # Firmware version formatting helper (handles both 3-digit and 4-digit versions)
@@ -52,15 +52,21 @@ ps4-kexec-%/kexec.bin:
 	file $@ | fgrep -q '$@: DOS executable (COM)'
 
 # Template function to generate rules
-# Usage: $(call make-payload-rule,firmware,size,main-source,variant-suffix)
+# Usage: $(call make-payload-rule,firmware,size_in_mb,main-source,variant-suffix)
 define make-payload-rule
-fw$(1)/payload-$(1)-$(2)$(4).elf: ../lib/lib.a $(3) ps4-kexec-$(1)$(4)/kexec.bin
-	$(CC) $(CFLAGS) ../lib/lib.a -D__$(call FW_VERSION,$(1))__ -DPS4_$(call FW_VERSION,$(1)) $(call VRAM_FLAGS,$(2)) $(3) $(LDFLAGS) -o $$@
+fw$(1)/payload-$(1)-$(2)mb$(4).elf: ../lib/lib.a $(3) ps4-kexec-$(1)$(4)/kexec.bin
+	@mkdir -p fw$(1)
+	$(CC) $(CFLAGS) ../lib/lib.a \
+		-D__$(call FW_VERSION,$(1))__ -DPS4_$(call FW_VERSION,$(1)) \
+		-DVRAM_MB_DEFAULT=$(2) \
+		-DVRAM_MB_MIN=32 \
+		-DVRAM_MB_MAX=4096 \
+		$(3) $(LDFLAGS) -o $$@
 endef
 
 # Generate all rules for each firmware
 $(foreach fw,$(FIRMWARES), \
-  $(foreach sz,$(SIZES), \
+  $(foreach sz,$(SIZES_MB), \
     $(eval $(call make-payload-rule,$(fw),$(sz),main.c,)) \
     $(eval $(call make-payload-rule,$(fw),$(sz),main-baikal.c,-baikal)) \
   ) \

linux/main-baikal.c

@@ -177,11 +177,13 @@ int my_atoi(const char *s)
 #endif
 
 #ifndef VRAM_MB_MIN
-#define VRAM_MB_MIN 256
+#define VRAM_MB_MIN 128
 #endif
 
+// VRAM_MB_MAX is injected by the Makefile
+// Provide a safe fallback only if somehow not set (should not happen in normal builds).
 #ifndef VRAM_MB_MAX
-#define VRAM_MB_MAX 5120
+#define VRAM_MB_MAX 4096
 #endif
 
 #ifndef HDD_BOOT_PATH

linux/main.c

@@ -177,11 +177,13 @@ int my_atoi(const char *s)
 #endif
 
 #ifndef VRAM_MB_MIN
-#define VRAM_MB_MIN 256
+#define VRAM_MB_MIN 128
 #endif
 
+// VRAM_MB_MAX is injected by the Makefile
+// Provide a safe fallback only if somehow not set (should not happen in normal builds).
 #ifndef VRAM_MB_MAX
-#define VRAM_MB_MAX 5120
+#define VRAM_MB_MAX 4096
 #endif
 
 #ifndef HDD_BOOT_PATH