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Virtual memory: add ability to read NAND/SD CID

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d0k3 2017-08-25 14:19:16 +02:00
parent ff7b9749ad
commit 0fd5261516
1 changed files with 20 additions and 4 deletions
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24
source/virtual/vmem.c
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@ -2,6 +2,7 @@
#include "unittype.h"
#include "sha.h"
#include "aes.h"
#include "sdmmc.h"
#include "itcm.h"
#include "i2c.h"
@ -43,15 +44,18 @@ typedef int ReadVMemFileCallback(const VirtualFile* vfile, void* buffer, u64 off
enum VMemCallbackType {
VMEM_CALLBACK_OTP_DECRYPTED,
VMEM_CALLBACK_MCU_REGISTERS,
VMEM_CALLBACK_FLASH_CID,
VMEM_NUM_CALLBACKS
};
ReadVMemFileCallback ReadVMemOTPDecrypted;
ReadVMemFileCallback ReadVMemMCURegisters;
ReadVMemFileCallback ReadVMemFlashCID;
static ReadVMemFileCallback* const vMemCallbacks[] = {
ReadVMemOTPDecrypted,
ReadVMemMCURegisters,
ReadVMemFlashCID
};
STATIC_ASSERT(sizeof(vMemCallbacks) / sizeof(vMemCallbacks[0]) == VMEM_NUM_CALLBACKS);
@ -75,8 +79,10 @@ static const VirtualFile vMemFileTemplates[] = {
// Custom callback implementations.
// Keyslot field has arbitrary meaning, and may not actually be a keyslot.
{ "otp_dec.mem" , VMEM_CALLBACK_OTP_DECRYPTED, OTP_LEN , 0x11, VFLAG_CALLBACK | VFLAG_READONLY | VFLAG_OTP | VFLAG_BOOT9 },
{ "mcu_3ds_regs.bin" , VMEM_CALLBACK_MCU_REGISTERS, 0x00000100, I2C_DEV_MCU, VFLAG_CALLBACK | VFLAG_READONLY },
{ "mcu_dsi_regs.bin" , VMEM_CALLBACK_MCU_REGISTERS, 0x00000100, I2C_DEV_POWER, VFLAG_CALLBACK | VFLAG_READONLY },
{ "mcu_3ds_regs.mem" , VMEM_CALLBACK_MCU_REGISTERS, 0x00000100, I2C_DEV_MCU, VFLAG_CALLBACK | VFLAG_READONLY },
{ "mcu_dsi_regs.mem" , VMEM_CALLBACK_MCU_REGISTERS, 0x00000100, I2C_DEV_POWER, VFLAG_CALLBACK | VFLAG_READONLY },
{ "sd_cid.mem" , VMEM_CALLBACK_FLASH_CID , 0x00000010, 0x01, VFLAG_CALLBACK | VFLAG_READONLY },
{ "nand_cid.mem" , VMEM_CALLBACK_FLASH_CID , 0x00000010, 0x00, VFLAG_CALLBACK | VFLAG_READONLY }
};
bool ReadVMemDir(VirtualFile* vfile, VirtualDir* vdir) { // uses a generic vdir object generated in virtual.c
@ -125,8 +131,18 @@ int ReadVMemMCURegisters(const VirtualFile* vfile, void* buffer, u64 offset, u64
u8 device = (u8) vfile->keyslot;
// Read the data.
u8* dest = (u8*) buffer;
return (I2C_readRegBuf(device, (u8) offset, dest, (u32) count)) ? 0 : 1;
return (I2C_readRegBuf(device, (u8) offset, (u8*) buffer, (u32) count)) ? 0 : 1;
}
// Read NAND / SD CID.
int ReadVMemFlashCID(const VirtualFile* vfile, void* buffer, u64 offset, u64 count) {
// NAND CID if keyslot field != 0.
bool is_nand = (bool)vfile->keyslot;
u32 cid[4]; // CID is 16 byte in size
sdmmc_get_cid(is_nand, (u32*) cid);
memcpy(buffer, ((u8*) cid) + offset, count);
return 0;
}
int ReadVMemFile(const VirtualFile* vfile, void* buffer, u64 offset, u64 count) {