Merge pull request #4 from kirathenotebook/patch-1

Update README.md

README.md

@@ -156,6 +156,14 @@ git clone https://github.com/ps5-linux/ps5-linux-loader
 cd ps5-linux-loader
 make
 ```
+## Compiling on ARM64 Linux
+
+Install the x86-64 cross-compilation tools before:
+
+```bash
+sudo apt install gcc-x86-64-linux-gnu binutils-x86-64-linux-gnu
+```
+
 
 Find your PS5 IP at `Settings → Network → View Connection Status`.
 
@@ -169,9 +177,11 @@ If the LED is white, but you still have a blackscreen then:
 
 - Try different monitors or capture cards, ideally with different resolutions. Currently, some monitors have issues.
 - Try setting `amdgpu.force_1080p=1` in `cmdline.txt` in the FAT32 partition of the USB drive.
+- Try removing `video=DP-1:1920x1080@60` line in cmdline.txt.
 
 If none of this helps, please report the issue in our [Discord server](https://discord.gg/PeMGVB7BAm) and provide your EDID information.
 
+
 ## First Boot
 
 Configure your system and memorize your login password.
@@ -258,7 +268,7 @@ Always turn on fan when your turn on boost, as this is what the official PS5 OS
 - Q: Does the DualSense controller work?
   - A: Via a Bluetooth dongle. Built-in Bluetooth is not yet supported.
 - Q: What resolutions and refresh rates are supported?
-  - A: So far only 1080p, 1440p and 2160p at 60Hz. 120Hz or 30Hz may be added in the future.
+  - A: 1080p, 1440p and 2160p at 60Hz are broadly supported. 1440p@120Hz has been the only confirmed working on the DELL S3225QC yet. 120Hz or 30Hz may be added in the future.
 
 
 ## Tips and tricks
@@ -266,7 +276,9 @@ Always turn on fan when your turn on boost, as this is what the official PS5 OS
 - You can adjust the kernel cmdline in `cmdline.txt` in the FAT32 partition.
 - You can adjust the VRAM size in `vram.txt` in the FAT32 partition. By default, it uses 512MB (0x20000000) which enables [Dynamic VRAM allocation](https://elektricm.github.io/amd-bc250-docs/bios/flashing/#why-flash-the-bios).
 - Monitor hotswap may work, but it will not change resolution automatically.
-
+- Some monitors have a black screen if a video=DP-1: parameter is set in `cmdline.txt`. Confirmed working without `video=DP-1:1920x1080@60` on:
+  - MSI MAG274Q QD E2, DELL S2721DGF, DELL U2515H (1440p@60Hz)
+  - Possibly also: LG 27GL850, Lenovo Legion Y27q, ViewSonic Elite XG270QG
 Many configurations, tips and tricks from the [AMD BC250 Documentation](https://elektricm.github.io/amd-bc250-docs/) also apply to PS5.
 
 ## Bugs

shellcode_hypervisor/Makefile

@@ -3,9 +3,16 @@ ifndef PS5_PAYLOAD_SDK
 endif
 
 # 1. Variables
+ifeq ($(shell uname -m),aarch64)
+CC      = x86_64-linux-gnu-gcc
+LD      = x86_64-linux-gnu-ld
+OBJCOPY = x86_64-linux-gnu-objcopy
+else
 CC      = gcc
 LD      = ld
-CFLAGS  = -O2 -fno-stack-protector -ffreestanding -nostdlib -fcf-protection=none -I$(PS5_PAYLOAD_SDK)/target/include
+OBJCOPY = objcopy
+endif
+CFLAGS  = -O2 -fno-stack-protector -ffreestanding -nostdlib -fcf-protection=none -m64 -I$(PS5_PAYLOAD_SDK)/target/include
 LDFLAGS = -T linker.ld
 TARGET  = shellcode_hypervisor.elf
 TEXT_BIN = shellcode_hypervisor.bin
@@ -23,7 +30,7 @@ $(TARGET): $(OBJ)
 	$(CC) $(CFLAGS) -c $< -o $@
 
 $(TEXT_BIN): $(TARGET)
-	objcopy -O binary -j .shell_code $(TARGET) $(TEXT_BIN)
+	$(OBJCOPY) -O binary -j .shell_code $(TARGET) $(TEXT_BIN)
 
 clean:
 	rm -f $(OBJ) $(TARGET) $(TEXT_BIN) $(dump)

shellcode_kernel/Makefile

@@ -3,9 +3,16 @@ ifndef PS5_PAYLOAD_SDK
 endif
 
 
+ifeq ($(shell uname -m),aarch64)
+CC      = x86_64-linux-gnu-gcc
+LD      = x86_64-linux-gnu-ld
+OBJCOPY = x86_64-linux-gnu-objcopy
+else
 CC      = gcc
 LD      = ld
-CFLAGS  = -O2 -fno-stack-protector -ffreestanding -nostdlib -I$(PS5_PAYLOAD_SDK)/target/include
+OBJCOPY = objcopy
+endif
+CFLAGS  = -O2 -fno-stack-protector -ffreestanding -nostdlib -m64 -I$(PS5_PAYLOAD_SDK)/target/include
 LDFLAGS = -T linker.ld
 TARGET  = shellcode_kernel.elf
 TEXT_BIN = shellcode_text.bin
@@ -24,7 +31,7 @@ $(TARGET): $(OBJ)
 	$(CC) $(CFLAGS) -c $< -o $@
 
 $(TEXT_BIN): $(TARGET)
-	objcopy -O binary -j .text $(TARGET) $(TEXT_BIN)
+	$(OBJCOPY) -O binary -j .text $(TARGET) $(TEXT_BIN)
 
 clean:
 	rm -f $(OBJ) $(TARGET) $(TEXT_BIN) $(dump)