First commit

Author: xerpi

Makefile

@@ -0,0 +1,64 @@
+ifeq ($(strip $(DEVKITARM)),)
+$(error "Please set DEVKITARM in your environment. export DEVKITARM=<path to>devkitARM")
+endif
+
+include $(DEVKITARM)/base_tools
+
+TARGET		= firm_linux_loader
+ARM9_SOURCES	= source_arm9 source_arm9/fatfs
+ARM9_INCLUDES	= include_arm9 include_arm9/fatfs
+ARM11_SOURCES	= source_arm11
+ARM11_INCLUDES	= include_arm11
+
+ARM9_SFILES	= $(foreach dir, $(ARM9_SOURCES), $(wildcard $(dir)/*.s))
+ARM9_CFILES	= $(foreach dir, $(ARM9_SOURCES), $(wildcard $(dir)/*.c))
+ARM11_SFILES	= $(foreach dir, $(ARM11_SOURCES), $(wildcard $(dir)/*.s))
+ARM11_CFILES	= $(foreach dir, $(ARM11_SOURCES), $(wildcard $(dir)/*.c))
+
+ARM9_OBJS	= $(ARM9_SFILES:.s=.arm9.o) $(ARM9_CFILES:.c=.arm9.o)
+ARM9_INCLUDE	= $(foreach dir, $(ARM9_INCLUDES), -I$(CURDIR)/$(dir)) -Iinclude_common
+ARM11_OBJS	= $(ARM11_SFILES:.s=.arm11.o) $(ARM11_CFILES:.c=.arm11.o)
+ARM11_INCLUDE	= $(foreach dir, $(ARM11_INCLUDES), -I$(CURDIR)/$(dir)) -Iinclude_common
+
+COMMON_ARCH	= -mlittle-endian -mthumb-interwork
+ARM9_ARCH	= -mcpu=arm946e-s -march=armv5te
+ARM11_ARCH	= -mcpu=mpcore -march=armv6k
+
+ARM9_ASFLAGS	= $(ARM9_ARCH) $(COMMON_ARCH) $(ARM9_INCLUDE) -x assembler-with-cpp
+ARM11_ASFLAGS	= $(ARM11_ARCH) $(COMMON_ARCH) $(ARM11_INCLUDE) -x assembler-with-cpp
+
+ARM9_CFLAGS	= -Wall -O0 -fno-builtin -nostartfiles $(ARM9_ARCH) $(ARM9_INCLUDE)
+ARM11_CFLAGS	= -Wall -O0 -fno-builtin -nostartfiles $(ARM11_ARCH) $(ARM11_INCLUDE)
+
+.PHONY: all clean copy
+
+all: $(TARGET).firm
+
+$(TARGET).firm: $(TARGET).arm9.elf $(TARGET).arm11.elf
+	firmtool build $@ \
+		-n 0x08006800 -e 0x1FF80000 \
+		-D $(TARGET).arm9.elf $(TARGET).arm11.elf \
+		-A 0x08006800 0x1FF80000 \
+		-C NDMA XDMA -i
+
+$(TARGET).arm9.elf: $(ARM9_OBJS)
+	$(CC) -T link_arm9.ld $^ -o $@
+
+$(TARGET).arm11.elf: $(ARM11_OBJS)
+	$(CC) -T link_arm11.ld $^ -o $@
+
+%.arm9.o: %.c
+	$(CC) $(ARM9_CFLAGS) -c $< -o $@
+%.arm9.o: %.s
+	$(CC) $(ARM9_ASFLAGS) -c $< -o $@
+
+%.arm11.o: %.c
+	$(CC) $(ARM11_CFLAGS) -c $< -o $@
+%.arm11.o: %.s
+	$(CC) $(ARM11_ASFLAGS) -c $< -o $@
+
+clean:
+	@rm -f $(ARM9_OBJS) $(ARM11_OBJS) $(TARGET).arm9.elf $(TARGET).arm11.elf $(TARGET).firm
+
+copy: $(TARGET).firm
+	cp $< $(SD3DS)/luma/payloads/down_$(TARGET).firm && sync

README.md

@@ -0,0 +1,18 @@
+# FIRM Linux Loader
+_FIRM Linux Loader for the Nintendo 3DS_
+
+## How to run this
+
+You need the Linux image in order to make use of this.
+
+More info at: [GBAtemp: [Release] Linux for the 3DS](https://gbatemp.net/threads/release-linux-for-the-3ds.407187/)
+
+## Working folders
+
+This Linux loader will first try to load the necessary Linux files from the root of the SD card, if it can't find them there, it will try to load them from inside a /linux folder placed at the root of the SD.
+
+## License
+You may use this under the terms of the GNU General Public License GPL v2 or under the terms of any later revisions of the GPL. Refer to the provided `LICENSE.txt` file for further information.
+
+## Credits
+* Everybody credited at [Decrypt9WIP](https://github.com/d0k3/Decrypt9WIP)

include_arm9/cache.h

@@ -0,0 +1,3 @@
+#pragma once
+
+void flushCaches(void);

include_arm9/common.h

@@ -0,0 +1,51 @@
+#pragma once
+
+#include <inttypes.h>
+#include <stddef.h>
+#include <stdbool.h>
+#include <string.h>
+#include <ctype.h>
+#include <stdlib.h>
+#include <stdio.h>
+
+#define u8 uint8_t
+#define u16 uint16_t
+#define u32 uint32_t
+#define u64 uint64_t
+
+#define vu8 volatile u8
+#define vu16 volatile u16
+#define vu32 volatile u32
+#define vu64 volatile u64
+
+#define max(a,b) \
+    (((a) > (b)) ? (a) : (b))
+#define min(a,b) \
+    (((a) < (b)) ? (a) : (b))
+#define getbe16(d) \
+    (((d)[0]<<8) | (d)[1])
+#define getbe32(d) \
+    ((((u32) getbe16(d))<<16) | ((u32) getbe16(d+2)))
+#define getbe64(d) \
+    ((((u64) getbe32(d))<<32) | ((u64) getbe32(d+4)))
+#define getle16(d) (*((u16*) (d)))
+#define getle32(d) (*((u32*) (d)))
+#define getle64(d) (*((u64*) (d)))
+#define align(v,a) \
+    (((v) % (a)) ? ((v) + (a) - ((v) % (a))) : (v))
+
+// standard work area, size must be a multiple of 0x200 (512)
+#define BUFFER_ADDRESS  ((u8*) 0x21000000)
+#define BUFFER_MAX_SIZE ((u32) (1 * 1024 * 1024))
+
+// log file name
+#define LOG_FILE "firm_linux_loader.log"
+
+static inline u32 strchrcount(const char* str, char symbol) {
+    u32 count = 0;
+    for (u32 i = 0; str[i] != '\0'; i++) {
+        if (str[i] == symbol)
+            count++;
+    }
+    return count;
+}

include_arm9/draw.h

@@ -0,0 +1,61 @@
+// Copyright 2013 Normmatt
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include "common.h"
+
+#define BYTES_PER_PIXEL 3
+#define SCREEN_HEIGHT 240
+#define SCREEN_WIDTH_TOP 400
+#define SCREEN_WIDTH_BOT 320
+
+#define RGB(r,g,b) (r<<24|b<<16|g<<8|r)
+
+#define COLOR_BLACK         RGB(0x00, 0x00, 0x00)
+#define COLOR_WHITE         RGB(0xFF, 0xFF, 0xFF)
+#define COLOR_RED           RGB(0xFF, 0x00, 0x00)
+#define COLOR_GREEN         RGB(0x00, 0xFF, 0x00)
+#define COLOR_BLUE          RGB(0x00, 0x00, 0xFF)
+#define COLOR_CYAN          RGB(0x00, 0xFF, 0xFF)
+#define COLOR_MAGENTA       RGB(0xFF, 0x00, 0xFF)
+#define COLOR_YELLOW        RGB(0xFF, 0xFF, 0x00)
+#define COLOR_GREY          RGB(0x77, 0x77, 0x77)
+#define COLOR_TRANSPARENT   RGB(0xFF, 0x00, 0xEF) // otherwise known as 'super fuchsia'
+
+#define STD_COLOR_BG   COLOR_BLACK
+#define STD_COLOR_FONT COLOR_WHITE
+
+#define DBG_COLOR_BG   COLOR_BLACK
+#define DBG_COLOR_FONT COLOR_WHITE
+
+#define DBG_START_Y 10
+#define DBG_END_Y   (SCREEN_HEIGHT - 10)
+#define DBG_START_X 10
+#define DBG_END_X   (SCREEN_WIDTH_TOP - 10)
+#define DBG_STEP_Y  10
+
+#define DBG_N_CHARS_Y ((DBG_END_Y - DBG_START_Y) / DBG_STEP_Y)
+#define DBG_N_CHARS_X (((DBG_END_X - DBG_START_X) / 8) + 1)
+
+#define TOP_SCREEN0 (u8*)(*(u32*)0x23FFFE00)
+#define TOP_SCREEN1 (u8*)(*(u32*)0x23FFFE00)
+#define BOT_SCREEN0 (u8*)(*(u32*)0x23FFFE08)
+#define BOT_SCREEN1 (u8*)(*(u32*)0x23FFFE08)
+
+
+void ClearScreen(unsigned char *screen, int width, int color);
+void ClearScreenFull(bool clear_top, bool clear_bottom);
+
+void DrawCharacter(unsigned char *screen, int character, int x, int y, int color, int bgcolor);
+void DrawString(unsigned char *screen, const char *str, int x, int y, int color, int bgcolor);
+void DrawStringF(int x, int y, bool use_top, const char *format, ...);
+
+void Screenshot(const char* path);
+void DebugClear();
+void DebugSet(const char **strs);
+void DebugColor(u32 color, const char *format, ...);
+void Debug(const char *format, ...);
+
+void ShowProgress(u64 current, u64 total);

include_arm9/fatfs/diskio.h

@@ -0,0 +1,80 @@
+/*-----------------------------------------------------------------------/
+/  Low level disk interface modlue include file   (C)ChaN, 2014          /
+/-----------------------------------------------------------------------*/
+
+#ifndef _DISKIO_DEFINED
+#define _DISKIO_DEFINED
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define _USE_WRITE	1	/* 1: Enable disk_write function */
+#define _USE_IOCTL	1	/* 1: Enable disk_ioctl fucntion */
+
+#include "integer.h"
+
+
+/* Status of Disk Functions */
+typedef BYTE	DSTATUS;
+
+/* Results of Disk Functions */
+typedef enum {
+	RES_OK = 0,		/* 0: Successful */
+	RES_ERROR,		/* 1: R/W Error */
+	RES_WRPRT,		/* 2: Write Protected */
+	RES_NOTRDY,		/* 3: Not Ready */
+	RES_PARERR		/* 4: Invalid Parameter */
+} DRESULT;
+
+
+/*---------------------------------------*/
+/* Prototypes for disk control functions */
+
+
+DSTATUS disk_initialize (BYTE pdrv);
+DSTATUS disk_status (BYTE pdrv);
+DRESULT disk_read (BYTE pdrv, BYTE* buff, DWORD sector, UINT count);
+DRESULT disk_write (BYTE pdrv, const BYTE* buff, DWORD sector, UINT count);
+DRESULT disk_ioctl (BYTE pdrv, BYTE cmd, void* buff);
+
+
+/* Disk Status Bits (DSTATUS) */
+
+#define STA_NOINIT		0x01	/* Drive not initialized */
+#define STA_NODISK		0x02	/* No medium in the drive */
+#define STA_PROTECT		0x04	/* Write protected */
+
+
+/* Command code for disk_ioctrl fucntion */
+
+/* Generic command (Used by FatFs) */
+#define CTRL_SYNC			0	/* Complete pending write process (needed at _FS_READONLY == 0) */
+#define GET_SECTOR_COUNT	1	/* Get media size (needed at _USE_MKFS == 1) */
+#define GET_SECTOR_SIZE		2	/* Get sector size (needed at _MAX_SS != _MIN_SS) */
+#define GET_BLOCK_SIZE		3	/* Get erase block size (needed at _USE_MKFS == 1) */
+#define CTRL_TRIM			4	/* Inform device that the data on the block of sectors is no longer used (needed at _USE_TRIM == 1) */
+
+/* Generic command (Not used by FatFs) */
+#define CTRL_POWER			5	/* Get/Set power status */
+#define CTRL_LOCK			6	/* Lock/Unlock media removal */
+#define CTRL_EJECT			7	/* Eject media */
+#define CTRL_FORMAT			8	/* Create physical format on the media */
+
+/* MMC/SDC specific ioctl command */
+#define MMC_GET_TYPE		10	/* Get card type */
+#define MMC_GET_CSD			11	/* Get CSD */
+#define MMC_GET_CID			12	/* Get CID */
+#define MMC_GET_OCR			13	/* Get OCR */
+#define MMC_GET_SDSTAT		14	/* Get SD status */
+
+/* ATA/CF specific ioctl command */
+#define ATA_GET_REV			20	/* Get F/W revision */
+#define ATA_GET_MODEL		21	/* Get model name */
+#define ATA_GET_SN			22	/* Get serial number */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif