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Improved unit detection routines

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d0k3 2017-05-16 23:14:28 +02:00
parent e20ec690b9
commit 2e9659e36a
5 changed files with 18 additions and 28 deletions
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15
source/common/platform.c
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@ -1,15 +0,0 @@
#include "common.h"
#include "platform.h"
#define CONFIG_PLATFORM_REG ((volatile u32*)0x10140FFC)
Platform GetUnitPlatform()
{
switch (*CONFIG_PLATFORM_REG) {
case 7:
return PLATFORM_N3DS;
case 1:
default:
return PLATFORM_3DS;
}
}

8
source/common/platform.h
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@ -1,8 +0,0 @@
#pragma once
typedef enum {
PLATFORM_3DS,
PLATFORM_N3DS,
} Platform;
Platform GetUnitPlatform();

13
source/common/unittype.h Normal file
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@ -0,0 +1,13 @@
#pragma once
#include "common.h"
// see: https://3dbrew.org/wiki/CONFIG11_Registers
#define IS_O3DS ((*(vu32*) 0x10140FFC) != 0x7)
// see: https://www.3dbrew.org/wiki/Memory_layout#ARM9_ITCM
// see: https://www.3dbrew.org/wiki/OTP_Registers#Plaintext_OTP
#define IS_DEVKIT ((*(vu8*) (0x01FFB800+0x19)) != 0x0)
// see: https://3dbrew.org/wiki/CONFIG11_Registers
#define IS_A9LH ((*(vu32*) 0x101401C0) == 0)

6
source/nand/nand.c
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@ -326,7 +326,7 @@ u32 CheckNandHeader(void* header)
// header type check // header type check
u8* header_enc = header; u8* header_enc = header;
if (memcmp(header_enc + 0x100, nand_magic_n3ds, sizeof(nand_magic_n3ds) == 0) == 0) if (memcmp(header_enc + 0x100, nand_magic_n3ds, sizeof(nand_magic_n3ds) == 0) == 0)
return (GetUnitPlatform() == PLATFORM_3DS) ? 0 : NAND_TYPE_N3DS; return (IS_O3DS) ? 0 : NAND_TYPE_N3DS;
else if (memcmp(header_enc + 0x100, nand_magic_o3ds, sizeof(nand_magic_o3ds) == 0) == 0) else if (memcmp(header_enc + 0x100, nand_magic_o3ds, sizeof(nand_magic_o3ds) == 0) == 0)
return NAND_TYPE_O3DS; return NAND_TYPE_O3DS;
@ -338,12 +338,12 @@ u32 CheckNandType(void)
if (ReadNandSectors(NAND_BUFFER, 0, 1, 0xFF) != 0) if (ReadNandSectors(NAND_BUFFER, 0, 1, 0xFF) != 0)
return 0; return 0;
if (memcmp(NAND_BUFFER + 0x100, nand_magic_n3ds, 0x60) == 0) { if (memcmp(NAND_BUFFER + 0x100, nand_magic_n3ds, 0x60) == 0) {
return (GetUnitPlatform() == PLATFORM_3DS) ? 0 : NAND_TYPE_N3DS; return (IS_O3DS) ? 0 : NAND_TYPE_N3DS;
} else if (memcmp(NAND_BUFFER + 0x100, nand_magic_o3ds, 0x60) == 0) { } else if (memcmp(NAND_BUFFER + 0x100, nand_magic_o3ds, 0x60) == 0) {
u8 magic[8] = {0xE9, 0x00, 0x00, 0x43, 0x54, 0x52, 0x20, 0x20}; u8 magic[8] = {0xE9, 0x00, 0x00, 0x43, 0x54, 0x52, 0x20, 0x20};
if (ReadNandSectors(NAND_BUFFER, 0x5CAE5, 1, 0x04) != 0) if (ReadNandSectors(NAND_BUFFER, 0x5CAE5, 1, 0x04) != 0)
return 0; return 0;
return ((GetUnitPlatform() == PLATFORM_3DS) || (memcmp(magic, NAND_BUFFER, 8) == 0)) ? return ((IS_O3DS) || (memcmp(magic, NAND_BUFFER, 8) == 0)) ?
NAND_TYPE_O3DS : NAND_TYPE_NO3DS; NAND_TYPE_O3DS : NAND_TYPE_NO3DS;
} }

4
source/nand/nand.h
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@ -1,9 +1,9 @@
#pragma once #pragma once
#include "common.h" #include "common.h"
#include "platform.h" #include "unittype.h"
#define NAND_MIN_SECTORS ((GetUnitPlatform() == PLATFORM_N3DS) ? NAND_MIN_SECTORS_N3DS : NAND_MIN_SECTORS_O3DS) #define NAND_MIN_SECTORS ((!IS_O3DS) ? NAND_MIN_SECTORS_N3DS : NAND_MIN_SECTORS_O3DS)
#define NAND_SYSNAND (1<<0) #define NAND_SYSNAND (1<<0)
#define NAND_ZERONAND (1<<3) #define NAND_ZERONAND (1<<3)