Add libdragon ipl3 as makefile option

Makefile

@@ -5,9 +5,19 @@ include util.mk
 # Default target
 default: all
 
+# Use Libdragon IPL3
+# WARNING: This CAN and WILL break certain (most) emulators.
+# Use if you care about console or ares boot times.
+
+LIBDRAGON_IPL3 := 0
+
 # Preprocessor definitions
 DEFINES :=
 
+ifeq ($(LIBDRAGON_IPL3), 1)
+  DEFINES += LIBDRAGON_IPL3=1
+endif
+
 #==============================================================================#
 # Build Options                                                                #
 #==============================================================================#
@@ -111,7 +121,7 @@ ifeq ($(filter $(TARGET_STRING), sm64.jp.f3d_old sm64.us.f3d_old sm64.eu.f3d_new
 endif
 
 # Whether to hide commands or not
-VERBOSE ?= 1
+VERBOSE ?= 0
 ifeq ($(VERBOSE),0)
   V := @
 endif
@@ -125,15 +135,10 @@ ifeq ($(filter clean distclean,$(MAKECMDGOALS)),)
   $(info Version:        $(VERSION))
   $(info Microcode:      $(GRUCODE))
   $(info Target:         $(TARGET))
-  ifeq ($(COMPARE),1)
-    $(info Compare ROM:    yes)
+  ifeq ($(LIBDRAGON_IPL3),1)
+    $(info IPL:            Libdragon IPL3 Compat)
   else
-    $(info Compare ROM:    no)
-  endif
-  ifeq ($(NON_MATCHING),1)
-    $(info Build Matching: no)
-  else
-    $(info Build Matching: yes)
+    $(info IPL:            Nintendo IPL3)
   endif
   $(info =======================)
 endif
@@ -657,8 +662,12 @@ $(ELF): $(LIBULTRA_BUILD_DIR)/libgultra_rom.a $(O_FILES) $(MIO0_OBJ_FILES) $(SEG
 
 $(ROM): $(ELF)
 	$(call print,Building ROM:,$<,$@)
+ifeq ($(LIBDRAGON_IPL3), 0)
 	$(V)$(OBJCOPY) $(PAD_TO_GAP_FILL) $< $(@:.z64=.bin) -O binary
 	$(V)$(N64CKSUM) $(@:.z64=.bin) $@
+else
+	$(V)$(OBJCOPY) $(PAD_TO_GAP_FILL) $< $@ -O binary
+endif
 
 $(BUILD_DIR)/$(TARGET).objdump: $(ELF)
 	$(OBJDUMP) -D $< > $@

asm/boot.s

@@ -4,7 +4,6 @@
 
 #include "macros.inc"
 #include <PR/rcp.h>
-
 #define PHYS_TO_CART(addr) ((addr) | 0xB0000000)
 .equ CART_ENTRYPOINT, 0x00000008
 .equ CART_CHECKSUM0, 0x00000010
@@ -38,7 +37,7 @@
 // 0xA4000000-0xA4000FFF: RSP DMEM
 
 .section .text, "ax"
-
+#ifndef LIBDRAGON_IPL3
 // 0xA4000040-0xA4000B6F: IPL3
 
 // IPL3 entry point jumped to from IPL2
@@ -1158,3 +1157,7 @@ func_A4000AD0:
 #endif
 
 .end ipl3_entry
+#else
+.section .text, "ax"
+.incbin "asm/libdragon_ipl3.bin"
+#endif

asm/entry.s

@@ -7,28 +7,7 @@
 .section .text, "ax"
 
 glabel entry_point
-#ifdef VERSION_CN
-    // Get main segment bss address and size
-    lui   $t0, %lo(_mainSegmentNoloadStartHi)
-    ori   $t0, %lo(_mainSegmentNoloadStartLo)
-    lui   $t1, %lo(_mainSegmentNoloadSizeHi)
-    ori   $t1, %lo(_mainSegmentNoloadSizeLo)
-.clear_bytes:
-    // Clear bss section until they are zeroed out
-    sw    $zero, ($t0) // Clear 4 bytes
-    sw    $zero, 4($t0) // Clear the next 4 bytes
-    addi  $t0, $t0, 8 // Increment the address of bytes to clear
-    addi  $t1, $t1, -8 // Subtract 8 bytes from the amount remaining
-    bnez  $t1, .clear_bytes // Continue clearing until clear_bytes is 0
-    nop
-    // Get init function and idle thread stack
-    lui   $sp, %lo(gIdleThreadStackHi)
-    ori   $sp, %lo(gIdleThreadStackLo)
-    lui   $t2, %lo(main_funcHi)
-    ori   $t2, %lo(main_funcLo)
-    jr    $t2 // Jump to the init function
-    nop
-#else
+#ifndef LIBDRAGON_IPL3
     // Get main segment bss address and size
     lui   $t0, %hi(_mainSegmentNoloadStart)
     lui   $t1, %lo(_mainSegmentNoloadSizeHi)
@@ -41,13 +20,13 @@ glabel entry_point
     sw    $zero, 4($t0) // Clear the next 4 bytes
     bnez  $t1, .clear_bytes // Continue clearing until clear_bytes is 0
     addi  $t0, $t0, 8 // Increment the address of bytes to clear
+#endif
     // Get init function and idle thread stack
     lui   $t2, %hi(main_func)
     lui   $sp, %hi(gIdleThreadStack)
     addiu $t2, %lo(main_func)
     jr    $t2 // Jump to the init function
     addiu $sp, %lo(gIdleThreadStack)
-#endif
     nop
     nop
     nop

asm/rom_header.s

@@ -16,7 +16,7 @@
     .fill 0x30
 #else
 
-.word  0x4EAA3D0E               /* Checksum 1 */
+.word  _mainSegmentRomEnd       /* Checksum 1 / Libdragon IPL3 load end */
 .word  0x74757C24               /* Checksum 2 */
 .word  0x00000000               /* Unknown */
 .word  0x00000000               /* Unknown */

sm64.ld

@@ -17,7 +17,9 @@ SECTIONS
     {
         BUILD_DIR/asm/rom_header.o(.text);
         BUILD_DIR/asm/boot.o(.text);
+#ifndef LIBDRAGON_IPL3
         BUILD_DIR/asm/ipl3_font.o(.text);
+#endif
     }
     END_SEG(boot)