[SC64][SW] Bootloader fixes

build.sh

@@ -30,12 +30,12 @@ build_bootloader () {
     if [ "$FORCE_CLEAN" = true ]; then
         make clean
     fi
-    FLAGS="$USER_FLAGS"
-    if [ ! -z "${GIT_BRANCH+x}" ]; then FLAGS+=" -DGIT_BRANCH='\"$GIT_BRANCH\"'"; fi
-    if [ ! -z "${GIT_TAG+x}" ]; then FLAGS+=" -DGIT_TAG='\"$GIT_TAG\"'"; fi
-    if [ ! -z "${GIT_SHA+x}" ]; then FLAGS+=" -DGIT_SHA='\"$GIT_SHA\"'"; fi
-    if [ ! -z "${GIT_MESSAGE+x}" ]; then FLAGS+=" -DGIT_MESSAGE='\"$GIT_MESSAGE\"'"; fi
-    make all -j USER_FLAGS="$FLAGS"
+    VERSION=""
+    if [ ! -z "${GIT_BRANCH+x}" ]; then VERSION+=" -DGIT_BRANCH='\"$GIT_BRANCH\"'"; fi
+    if [ ! -z "${GIT_TAG+x}" ]; then VERSION+=" -DGIT_TAG='\"$GIT_TAG\"'"; fi
+    if [ ! -z "${GIT_SHA+x}" ]; then VERSION+=" -DGIT_SHA='\"$GIT_SHA\"'"; fi
+    if [ ! -z "${GIT_MESSAGE+x}" ]; then VERSION+=" -DGIT_MESSAGE='\"$GIT_MESSAGE\"'"; fi
+    make all -j VERSION="$VERSION" USER_FLAGS="$USER_FLAGS"
     popd > /dev/null
 
     BUILT_BOOTLOADER=true

sw/bootloader/Makefile

@@ -10,6 +10,7 @@ FLAGS = -march=vr4300 -mtune=vr4300 $(USER_FLAGS)
 CFLAGS = -Os -Wall -ffunction-sections -fdata-sections -ffreestanding -MMD -MP
 ASFLAGS = -Wa,-I$(N64_INST)/mips64-elf/lib
 LDFLAGS = -lc -nostartfiles -Wl,--gc-sections
+VERSION ?=
 
 SRC_DIR = src
 ASSET_DIR = assets
@@ -57,6 +58,9 @@ $(BUILD_DIR)/%.S.o: %.S
 $(BUILD_DIR)/%.c.o: %.c
 	$(CC) $(FLAGS) $(CFLAGS) -c $< -o $@
 
+$(BUILD_DIR)/version.c.o: version.c .FORCE
+	$(CC) $(FLAGS) $(CFLAGS) $(VERSION) -c $< -o $@
+
 $(BUILD_DIR)/%.asset: $(ASSET_DIR)/%.png tools/asset_converter.py
 	$(PYTHON) tools/asset_converter.py $< $@ --compress
 
@@ -67,13 +71,9 @@ $(BUILD_DIR)/bootloader.elf: $(OBJS) N64.ld
 	$(CXX) $(FLAGS) $(LDFLAGS) -TN64.ld $(OBJS) -o $@
 	@$(OBJDUMP) -S $@ > $(BUILD_DIR)/bootloader.lst
 
-$(BUILD_DIR)/bootloader.bin: $(BUILD_DIR)/bootloader.elf tools/strip.py
+$(BUILD_DIR)/bootloader.bin: $(BUILD_DIR)/bootloader.elf tools/finalize.py
 	@$(OBJCOPY) -O binary $< $@
-	@chksum64 $@ > /dev/null
-	@$(PYTHON) tools/strip.py $@ 1024
-
-$(BUILD_DIR)/bootloader.hex: $(BUILD_DIR)/bootloader.bin
-	@$(OBJCOPY) -I binary -O ihex $< $@
+	@$(PYTHON) tools/finalize.py $@ > /dev/null
 
 print_size: $(BUILD_DIR)/bootloader.elf
 	@echo 'Size of modules:'
@@ -81,13 +81,11 @@ print_size: $(BUILD_DIR)/bootloader.elf
 	@echo 'Size of bootloader:'
 	@$(SIZE) -B -d $<
 
-all: $(BUILD_DIR)/bootloader.hex print_size
+all: $(BUILD_DIR)/bootloader.bin print_size
 
 clean:
 	@rm -rf ./$(BUILD_DIR)/*
 
-$(BUILD_DIR)/version.c.o: .FORCE
-
 .FORCE:
 
 .PHONY: .FORCE all clean print_size

sw/bootloader/N64.ld

@@ -45,12 +45,6 @@ SECTIONS {
         _ebss = .;
     } > ram
 
-    .fill : {
-        FILL(0xFF);
-        BYTE(0xFF);
-        . = ORIGIN(rom) + LENGTH(rom);
-    } > rom
-
     _sheap = .;
     . = ORIGIN(ram) + LENGTH(ram) - __exception_stack_size - __stack_size;
     _eheap = .;

sw/bootloader/assets/assets.S

@@ -1,4 +1,5 @@
-.section .assets.@sym@
+.section .assets.@sym@, "a", %progbits
+.type assets_@sym@, %object
 .global assets_@sym@
 assets_@sym@:
     .incbin "@file@"

sw/bootloader/src/display.c

@@ -14,7 +14,7 @@
 #define LINE_SPACING            (2)
 
 
-static io32_t display_framebuffer[SCREEN_WIDTH * SCREEN_HEIGHT] __attribute__((section(".framebuffer")));
+static io32_t display_framebuffer[SCREEN_WIDTH * SCREEN_HEIGHT] __attribute__((section(".framebuffer, \"aw\", %nobits#")));
 static int char_x;
 static int char_y;
 static const vi_regs_t vi_config[] = {{

sw/bootloader/src/exception.S

@@ -7,6 +7,7 @@
 #define VECTOR_SIZE                 (0x80)
 #define VECTOR_NUM                  (4)
 
+#define ZR_OFFSET                   (0)
 #define AT_OFFSET                   (8)
 #define V0_OFFSET                   (16)
 #define V1_OFFSET                   (24)
@@ -49,6 +50,7 @@
 exception_handler:
     .set noat
     la $k0, (_esp - SAVE_REGISTERS_SIZE)
+    sd $zero, ZR_OFFSET($k0)
     sd $at, AT_OFFSET($k0)
     sd $v0, V0_OFFSET($k0)
     sd $v1, V1_OFFSET($k0)

sw/bootloader/src/ipl2.S

@@ -2,7 +2,8 @@
 .set noreorder
 
 
-.section .data.ipl2
+.section .text.ipl2, "ax", %progbits
+.type ipl2, %object
 ipl2:
     .global ipl2
     lui $t5, 0xBFC0

sw/bootloader/src/version.c

@@ -6,21 +6,25 @@ static version_t version = {
     .git_branch = GIT_BRANCH,
 #else
 #warning "No GIT_BRANCH provided"
+    .git_branch = "GIT_BRANCH",
 #endif
 #ifdef GIT_TAG
     .git_tag = GIT_TAG,
 #else
 #warning "No GIT_TAG provided"
+    .git_tag = "GIT_TAG",
 #endif
 #ifdef GIT_SHA
     .git_sha = GIT_SHA,
 #else
 #warning "No GIT_SHA provided"
+    .git_sha = "GIT_SHA",
 #endif
 #ifdef GIT_MESSAGE
     .git_message = GIT_MESSAGE,
 #else
 #warning "No GIT_MESSAGE provided"
+    .git_message = "GIT_MESSAGE",
 #endif
 };
 

sw/bootloader/tools/asset_converter.py

@@ -33,9 +33,9 @@ def compress(data: bytes, step_size: int=4) -> bytes:
     return compressed_data
 
 
-if __name__ == "__main__":
+if __name__ == '__main__':
     if (len(sys.argv) < 3):
-        print(f"Usage: python {sys.argv[0]} input_path output_path [--compress]")
+        print(f'Usage: python {sys.argv[0]} input_path output_path [--compress]')
         sys.exit(1)
 
     asset_input = sys.argv[1]
@@ -47,17 +47,22 @@ if __name__ == "__main__":
 
     try:
         source_asset = Image.open(asset_input)
-        converted_asset = source_asset.convert("RGBA").tobytes()
+        converted_asset = source_asset.convert('RGBA').tobytes()
+
         if (asset_compress):
             converted_asset = compress(converted_asset)
-        final_asset = open(asset_output, "wb")
+
+        final_asset = open(asset_output, 'wb')
         final_asset.write(converted_asset)
+
     except FileNotFoundError:
-        print(f"Couldn't open file \"{asset_input}\"")
+        print(f'Couldn\'t open file "{asset_input}"')
         sys.exit(2)
+
     except Exception as e:
         print(e)
         sys.exit(3)
+
     finally:
         if (source_asset):
             source_asset.close()

sw/bootloader/tools/finalize.py

@@ -0,0 +1,50 @@
+#!/usr/bin/env python3
+
+import subprocess
+import sys
+
+
+
+if __name__ == '__main__':
+    if (len(sys.argv) != 2):
+        print(f'Usage: python {sys.argv[0]} file_path')
+        sys.exit(1)
+
+    ALIGN = 1024
+    CHECKSUM_SIZE = 0x101000
+
+    bin_file = sys.argv[1]
+
+    try:
+        bin_data = b''
+
+        with open(bin_file, 'rb') as f:
+            bin_data = f.read()
+
+        pad_size = CHECKSUM_SIZE - len(bin_data)
+
+        if (pad_size > 0):
+            bin_data += b'\xFF' * pad_size
+            with open(bin_file, 'wb') as f:
+                f.write(bin_data)
+
+        subprocess.run(['chksum64', bin_file])
+
+        with open(bin_file, 'rb') as f:
+            bin_data = f.read()
+
+        bin_data = bin_data.strip(b'\xFF')
+        modulo = len(bin_data) % ALIGN
+        if (modulo > 0):
+            bin_data += b'\xFF' * (ALIGN - modulo)
+
+        with open(bin_file, 'wb') as f:
+            f.write(bin_data)
+
+    except FileNotFoundError as e:
+        print(f'Couldn\'t open file "{bin_file}" {e}')
+        sys.exit(2)
+
+    except Exception as e:
+        print(e)
+        sys.exit(3)

sw/bootloader/tools/strip.py

@@ -1,28 +0,0 @@
-#!/usr/bin/env python3
-
-import sys
-
-
-
-if __name__ == "__main__":
-    if (len(sys.argv) != 3):
-        print(f"Usage: python {sys.argv[0]} file_path align")
-        sys.exit(1)
-
-    file = sys.argv[1]
-    align = int(sys.argv[2], base=0)
-
-    try:
-        data = b''
-        with open(file, 'rb') as f:
-            data = f.read().strip(b'\xFF')
-        with open(file, 'wb') as f:
-            modulo = (len(data) % align) if (align > 0) else 0
-            data += b'\xFF' * ((align - modulo) if (modulo != 0) else 0)
-            f.write(data)
-    except FileNotFoundError:
-        print(f"Couldn't open file \"{file}\"")
-        sys.exit(2)
-    except Exception as e:
-        print(e)
-        sys.exit(3)