Merge pull request #403 from TuxSH/master

Add a lot of TWL_FIRM patches, see https://gist.github.com/Steveice10/8a6965c59192ac970832

rxmode/twl_firm/Makefile

@@ -39,7 +39,7 @@ $(BUILD):
 %_unstrip.elf: %_linked.elf
 	$(call Q,LINK,$@)$(LD) -i -Tscript.ld $< -o $@
 
-$(BUILD)/$(TARGET)_linked.elf: $(BUILD)/p9_signatures_spoof.o
+$(BUILD)/$(TARGET)_linked.elf: $(BUILD)/p9_signatures_spoof.o $(BUILD)/p9_sha_compare_stub.o $(BUILD)/p9_whitelist_check_disable.o $(BUILD)/p9_cartridge_save_type_check_disable.o $(BUILD)/p9_dsi_cartridge_save_exploit_check_disable.o $(BUILD)/p9_ninlogo_check_disable.o $(BUILD)/p9_blacklist_check_disable.o
 	$(call Q,LINK,$@)$(LD) -Tscript.ld $^ -o $@
 
 $(BUILD)/%.o: $(SOURCE)/%.s $(BUILD)

rxmode/twl_firm/script.ld

@@ -1,5 +1,25 @@
+twl_p9 = 0x8014A00;
+
 SECTIONS
 {
-	. = 0x080182C0;
+	. = twl_p9 + 0x38C0;
 	.patch.p9.sig : { *(.patch.p9.sig) }
+
+	. = twl_p9 + 0x13656;
+	.patch.p9.sha_compare_stub : { *(.patch.p9.sha_compare_stub) }
+
+	. = twl_p9 + 0x13164;
+	.patch.p9.whitelist_check_disable : { *(.patch.p9.whitelist_check_disable) }
+
+	. = twl_p9 + 0x1355E;
+	.patch.p9.cartridge_save_type_check_disable : { *(.patch.p9.cartridge_save_type_check_disable) }
+
+	. = twl_p9 + 0x1356A;
+	.patch.p9.dsi_cartridge_save_exploit_check_disable : { *(.patch.p9.dsi_cartridge_save_exploit_check_disable) }
+
+	. = twl_p9 + 0x13002;
+	.patch.p9.ninlogo_check_disable : { *(.patch.p9.ninlogo_check_disable) }
+
+	. = twl_p9 + 0x13552;
+	.patch.p9.blacklist_check_disable : { *(.patch.p9.blacklist_check_disable) }
 }

rxmode/twl_firm/source/p9_blacklist_check_disable.s

@@ -0,0 +1,8 @@
+@ Blacklist check patch found by TuxSH (see https://gist.github.com/Steveice10/8a6965c59192ac970832).
+@ Disables the cartridge blacklist check (mostly, if not entirely, demo carts). This check was introduced in firmware 4.4.0-10.
+
+.section .patch.p9.blacklist_check_disable, "a"
+.thumb
+	mov		r0, #1
+	nop
+.pool

rxmode/twl_firm/source/p9_cartridge_save_type_check_disable.s

@@ -0,0 +1,8 @@
+@ Cartridge save type check patch found by TuxSH (see https://gist.github.com/Steveice10/8a6965c59192ac970832).
+@ This check was introduced firmware 4.4.0-10, and blocked most DSi-compatible flashcarts as a result.
+
+.section .patch.p9.cartridge_save_type_check_disable, "a"
+.thumb
+	mov		r0, #1
+	nop
+.pool

rxmode/twl_firm/source/p9_dsi_cartridge_save_exploit_check_disable.s

@@ -0,0 +1,8 @@
+@ DSi cartridge save file exploit check patch found by Steveice10 (see https://gist.github.com/Steveice10/8a6965c59192ac970832).
+@ This check was blocking, for instance, the "Classic Word Games" and "Cooking Coach" DSi-mode exploits. 
+
+.section .patch.p9.dsi_cartridge_save_exploit_check_disable, "a"
+.thumb
+	mov		r0, #1
+	nop
+.pool

rxmode/twl_firm/source/p9_ninlogo_check_disable.s

@@ -0,0 +1,8 @@
+@ Nintendo logo check patch found by Steveice10 (see https://gist.github.com/Steveice10/8a6965c59192ac970832)
+@ It isn't generally needed
+
+.section .patch.p9.ninlogo_check_disable, "a"
+.thumb
+	mov		r0, #0
+	nop
+.pool

rxmode/twl_firm/source/p9_sha_compare_stub.s

@@ -0,0 +1,8 @@
+@ Signature/hash patch found by Steveice10, see https://gist.github.com/Steveice10/8a6965c59192ac970832
+@ This stubs the function commonly used to compare SHA hashes to always succeed. It's at least used to check SRL (DSi titles) signatures and SHA hashes in general.
+
+.section .patch.p9.sha_compare_stub, "a"
+.thumb
+	mov		r0, #1
+	bx		lr
+.pool

rxmode/twl_firm/source/p9_whitelist_check_disable.s

@@ -0,0 +1,7 @@
+@ Whitelist check patch found by Steveice10, see https://gist.github.com/Steveice10/8a6965c59192ac970832
+
+.section .patch.p9.whitelist_check_disable, "a"
+.thumb
+	mov		r0, #0
+	nop
+.pool