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cluser and sector aligned reading and writing, needs testing

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This commit is contained in:
James Tophoven 2019-10-04 14:08:33 +02:00
parent 35f38a1526
commit ed43620605
2 changed files with 253 additions and 207 deletions
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193
source/keys/keys.c
View file

@ -393,42 +393,7 @@ static inline u32 _read_le_u32(const void *buffer, u32 offset)
bool readData(u8 *buffer, u32 offset, u32 length, u8 enc)
{
// u8 *tmp = (u8 *)malloc(NX_EMMC_BLOCKSIZE);
// u32 sector = (offset / NX_EMMC_BLOCKSIZE);
// u32 newOffset = offset % NX_EMMC_BLOCKSIZE;
// u32 read = 0;
// if (newOffset > 0 && length >= NX_EMMC_BLOCKSIZE)
// {
// u32 toRead = NX_EMMC_BLOCKSIZE - newOffset;
// disk_read_prod(tmp, sector, 1);
// memcpy(buffer, tmp + newOffset, toRead);
// length -= toRead;
// read += toRead;
// sector++;
// }
// while (length > NX_EMMC_BLOCKSIZE)
// {
// disk_read_prod(tmp, sector, 1);
// memcpy(buffer + read, tmp, NX_EMMC_BLOCKSIZE);
// length -= NX_EMMC_BLOCKSIZE;
// read += NX_EMMC_BLOCKSIZE;
// sector++;
// }
// if (length > 0)
// {
// disk_read_prod(tmp, sector, 1);
// memcpy(buffer + read, tmp, length);
// }
// free(tmp);
bool result = false;
u32 sector = (offset / NX_EMMC_BLOCKSIZE);
u32 newOffset = (offset % NX_EMMC_BLOCKSIZE);
@ -441,77 +406,133 @@ bool readData(u8 *buffer, u32 offset, u32 length, u8 enc)
u32 sectorOffset = 0;
while (clusterOffset + sectorCount > SECTORS_IN_CLUSTER)
{
u32 sectorToRead = SECTORS_IN_CLUSTER - clusterOffset;
disk_read_prod(tmp + (sectorOffset * NX_EMMC_BLOCKSIZE), sector, sectorToRead, enc);
sector += sectorToRead;
sectorCount -= sectorToRead;
u32 sectorsToRead = SECTORS_IN_CLUSTER - clusterOffset;
if (disk_read_prod(tmp + (sectorOffset * NX_EMMC_BLOCKSIZE), sector, sectorsToRead, enc) != RES_OK)
{
goto out;
}
sector += sectorsToRead;
sectorCount -= sectorsToRead;
clusterOffset = 0;
sectorOffset += sectorToRead;
sectorOffset += sectorsToRead;
}
if(sectorCount == 0) goto done;
if (disk_read_prod(tmp + (sectorOffset * NX_EMMC_BLOCKSIZE), sector, sectorCount, enc) != RES_OK)
{
goto out;
}
disk_read_prod(tmp + (sectorOffset * NX_EMMC_BLOCKSIZE), sector, sectorCount, enc);
memcpy(buffer, tmp + newOffset, length);
done:
result = true;
out:
free(tmp);
return true;
return result;
}
bool writeData(u8 *buffer, u32 offset, u32 length, u8 enc)
{
bool result = false;
// u8 *tmp = (u8 *)malloc(NX_EMMC_BLOCKSIZE);
// u32 sector = (offset / NX_EMMC_BLOCKSIZE);
// u32 newOffset = offset % NX_EMMC_BLOCKSIZE;
// u32 read = 0;
// if (newOffset > 0 && length >= NX_EMMC_BLOCKSIZE)
// {
// u32 toRead = NX_EMMC_BLOCKSIZE - newOffset;
// disk_read_prod(tmp, sector, 1);
// memcpy(tmp + newOffset, buffer, toRead);
// disk_write_prod(tmp, sector, 1);
// length -= toRead;
// read += toRead;
// sector++;
// }
// while (length > NX_EMMC_BLOCKSIZE)
// {
// disk_write_prod(buffer + read, sector, 1);
// length -= NX_EMMC_BLOCKSIZE;
// read += NX_EMMC_BLOCKSIZE;
// sector++;
// }
// if (length > 0)
// {
// disk_read_prod(tmp, sector, 1);
// memcpy(tmp, buffer + read, length);
// disk_write_prod(buffer + read, sector, 1);
// }
// free(tmp);
u8 *tmp_sec = (u8 *)malloc(NX_EMMC_BLOCKSIZE);
u8 *tmp = NULL;
u32 sector = (offset / NX_EMMC_BLOCKSIZE);
u32 newOffset = (offset % NX_EMMC_BLOCKSIZE);
u8 sectorCount = ((newOffset + length - 1) / (NX_EMMC_BLOCKSIZE)) + 1;
// if there is a sector offset, read involved sector, write data to it with offset and write back whole sector to be sector aligned
if(newOffset > 0){
u32 bytesToRead;
if(length > NX_EMMC_BLOCKSIZE){
bytesToRead = NX_EMMC_BLOCKSIZE - newOffset;
} else {
bytesToRead = length - newOffset;
}
if(disk_read_prod(tmp_sec, sector, 1, enc) != RES_OK){
goto out;
}
memcpy(tmp_sec + newOffset, buffer, bytesToRead);
if(disk_write_prod(tmp_sec, sector, 1, enc) != RES_OK){
goto out;
}
sector++;
length -= bytesToRead;
newOffset = bytesToRead;
u8 *tmp = (u8 *)malloc(sectorCount * NX_EMMC_BLOCKSIZE);
// are we done?
if(length == 0) goto done;
}
// write whole sectors in chunks while being cluster aligned
u32 sectorCount = (length - 1 / NX_EMMC_BLOCKSIZE) + 1;
tmp = (u8 *)malloc(sectorCount * NX_EMMC_BLOCKSIZE);
disk_read_prod(tmp, sector, sectorCount, 1);
u32 clusterOffset = sector % SECTORS_IN_CLUSTER;
u32 sectorOffset = 0;
while (clusterOffset + sectorCount > SECTORS_IN_CLUSTER)
{
u32 sectorsToRead = SECTORS_IN_CLUSTER - clusterOffset;
if(disk_write_prod(buffer + newOffset + (sectorOffset * NX_EMMC_BLOCKSIZE), sector, sectorsToRead, enc) != RES_OK){
goto out;
}
sector += sectorsToRead;
sectorOffset += sectorsToRead;
sectorCount -= sectorsToRead;
clusterOffset = 0;
length -= sectorsToRead * NX_EMMC_BLOCKSIZE;
}
memcpy(tmp + newOffset, buffer, length);
// write remaining sectors
if(sectorCount > 0){
if(disk_write_prod(buffer + newOffset + (sectorOffset * NX_EMMC_BLOCKSIZE), sector, sectorCount, enc) != RES_OK){
goto out;
}
length -= sectorCount * NX_EMMC_BLOCKSIZE;
sector += sectorCount;
sectorOffset += sectorCount;
}
// if there is data remaining that is smaller than a sector, read that sector, write remaining data to it and write back whole sector
if(length == 0) goto done;
if(length >= NX_EMMC_BLOCKSIZE){
gfx_printf("\n%kERROR, ERROR!! remaining length: %d\n", COLOR_RED, length);
goto out;
}
if(disk_read_prod(tmp_sec, sector, 1, enc) != RES_OK){
goto out;
}
memcpy(tmp, buffer + newOffset + (sectorOffset * NX_EMMC_BLOCKSIZE), length);
if(disk_write_prod(tmp_sec, sector, 1, enc) != RES_OK){
goto out;
}
disk_write_prod(tmp, sector, sectorCount, enc);
done:
result = true;
out:
free(tmp_sec);
free(tmp);
return result;
return true;
// u32 sector = (offset / NX_EMMC_BLOCKSIZE);
// u32 newOffset = (offset % NX_EMMC_BLOCKSIZE);
// u8 sectorCount = ((newOffset + length - 1) / (NX_EMMC_BLOCKSIZE)) + 1;
// u8 *tmp = (u8 *)malloc(sectorCount * NX_EMMC_BLOCKSIZE);
// disk_read_prod(tmp, sector, sectorCount, 1);
// memcpy(tmp + newOffset, buffer, length);
// disk_write_prod(tmp, sector, sectorCount, enc);
// free(tmp);
// return true;
}
bool writeHash(u32 hashOffset, u32 offset, u32 sz)

267
source/libs/fatfs/diskio.c
View file

@ -24,50 +24,52 @@
/*-----------------------------------------------------------------------*/
#include <string.h>
#include "diskio.h" /* FatFs lower layer API */
#include "diskio.h" /* FatFs lower layer API */
#include "../../mem/heap.h"
#include "../../sec/se.h"
#define SDMMC_UPPER_BUFFER 0xB8000000
#define DRAM_START 0x80000000
#define DRAM_START 0x80000000
extern sdmmc_storage_t sd_storage;
extern sdmmc_storage_t storage;
extern emmc_part_t *system_part;
extern emmc_part_t *prodinfo_part;
typedef struct {
typedef struct
{
u32 sector;
u32 visit_count;
u8 tweak[0x10];
u8 cached_sector[0x200];
u8 align[8];
u8 tweak[0x10];
u8 cached_sector[0x200];
u8 align[8];
} sector_cache_t;
#define MAX_SEC_CACHE_ENTRIES 64
static sector_cache_t *sector_cache = (sector_cache_t*)0x40022000;
static sector_cache_t *sector_cache = (sector_cache_t *)0x40022000;
static u32 secindex = 0;
DSTATUS disk_status (
DSTATUS disk_status(
BYTE pdrv /* Physical drive number to identify the drive */
)
{
return 0;
}
DSTATUS disk_initialize (
DSTATUS disk_initialize(
BYTE pdrv /* Physical drive number to identify the drive */
)
{
return 0;
}
static inline void _gf256_mul_x_le(void *block) {
static inline void _gf256_mul_x_le(void *block)
{
u8 *pdata = (u8 *)block;
u32 carry = 0;
for (u32 i = 0; i < 0x10; i++) {
for (u32 i = 0; i < 0x10; i++)
{
u8 b = pdata[i];
pdata[i] = (b << 1) | carry;
carry = b >> 7;
@ -77,13 +79,16 @@ static inline void _gf256_mul_x_le(void *block) {
pdata[0x0] ^= 0x87;
}
static inline int _emmc_xts(u32 ks1, u32 ks2, u32 enc, u8 *tweak, bool regen_tweak, u32 tweak_exp, u64 sec, void *dst, void *src, u32 secsize) {
static inline int _emmc_xts(u32 ks1, u32 ks2, u32 enc, u8 *tweak, bool regen_tweak, u32 tweak_exp, u64 sec, void *dst, void *src, u32 secsize)
{
int res = 0;
u8 *pdst = (u8 *)dst;
u8 *psrc = (u8 *)src;
if (regen_tweak) {
for (int i = 0xF; i >= 0; i--) {
if (regen_tweak)
{
for (int i = 0xF; i >= 0; i--)
{
tweak[i] = sec & 0xFF;
sec >>= 8;
}
@ -98,7 +103,8 @@ static inline int _emmc_xts(u32 ks1, u32 ks2, u32 enc, u8 *tweak, bool regen_twe
memcpy(temptweak, tweak, 0x10);
//We are assuming a 0x10-aligned sector size in this implementation.
for (u32 i = 0; i < secsize / 0x10; i++) {
for (u32 i = 0; i < secsize / 0x10; i++)
{
for (u32 j = 0; j < 0x10; j++)
pdst[j] = psrc[j] ^ tweak[j];
_gf256_mul_x_le(tweak);
@ -111,116 +117,124 @@ static inline int _emmc_xts(u32 ks1, u32 ks2, u32 enc, u8 *tweak, bool regen_twe
pdst = (u8 *)dst;
memcpy(tweak, temptweak, 0x10);
for (u32 i = 0; i < secsize / 0x10; i++) {
for (u32 i = 0; i < secsize / 0x10; i++)
{
for (u32 j = 0; j < 0x10; j++)
pdst[j] = pdst[j] ^ tweak[j];
_gf256_mul_x_le(tweak);
pdst += 0x10;
}
res = 1;
out:;
return res;
}
DRESULT disk_read_prod(
DRESULT disk_read_prod (
BYTE *buff, /* Data buffer to store read data */
DWORD sector, /* Start sector in LBA */
UINT count, /* Number of sectors to read */
BYTE enc
)
BYTE *buff, /* Data buffer to store read data */
DWORD sector, /* Start sector in LBA */
UINT count, /* Number of sectors to read */
BYTE enc)
{
if(enc == 0 ){
if (nx_emmc_part_read(&storage, prodinfo_part, sector, count, buff)) {
return RES_OK;
}
return RES_ERROR;
}
__attribute__ ((aligned (16))) static u8 tweak[0x10];
__attribute__ ((aligned (16))) static u64 prev_cluster = -1;
__attribute__ ((aligned (16))) static u32 prev_sector = 0;
u32 tweak_exp = 0;
bool regen_tweak = true;
if (nx_emmc_part_read(&storage, prodinfo_part, sector, count, buff)) {
if (prev_cluster != sector / 0x20) { // sector in different cluster than last read
prev_cluster = sector / 0x20;
tweak_exp = sector % 0x20;
} else if (sector > prev_sector) { // sector in same cluster and past last sector
tweak_exp = sector - prev_sector - 1;
regen_tweak = false;
} else { // sector in same cluster and before or same as last sector
tweak_exp = sector % 0x20;
}
// fatfs will never pull more than a cluster
_emmc_xts(9, 8, 0, tweak, regen_tweak, tweak_exp, prev_cluster, buff, buff, count * 0x200);
prev_sector = sector + count - 1;
if (enc == 0)
{
if (nx_emmc_part_read(&storage, prodinfo_part, sector, count, buff))
{
return RES_OK;
}
return RES_ERROR;
}
__attribute__((aligned(16))) static u8 tweak[0x10];
__attribute__((aligned(16))) static u64 prev_cluster = -1;
__attribute__((aligned(16))) static u32 prev_sector = 0;
u32 tweak_exp = 0;
bool regen_tweak = true;
if (nx_emmc_part_read(&storage, prodinfo_part, sector, count, buff))
{
if (prev_cluster != sector / 0x20)
{ // sector in different cluster than last read
prev_cluster = sector / 0x20;
tweak_exp = sector % 0x20;
}
else if (sector > prev_sector)
{ // sector in same cluster and past last sector
tweak_exp = sector - prev_sector - 1;
regen_tweak = false;
}
else
{ // sector in same cluster and before or same as last sector
tweak_exp = sector % 0x20;
}
// fatfs will never pull more than a cluster
_emmc_xts(9, 8, 0, tweak, regen_tweak, tweak_exp, prev_cluster, buff, buff, count * 0x200);
prev_sector = sector + count - 1;
return RES_OK;
}
return RES_ERROR;
}
DRESULT disk_write_prod (
DRESULT disk_write_prod(
BYTE *buff, /* Data buffer to store read data */
DWORD sector, /* Start sector in LBA */
UINT count, /* Number of sectors to read */
BYTE enc
)
BYTE *buff, /* Data buffer to store read data */
DWORD sector, /* Start sector in LBA */
UINT count, /* Number of sectors to read */
BYTE enc)
{
if(enc == 0){
nx_emmc_part_write(&storage, prodinfo_part, sector, count, buff);
return RES_OK;
}
__attribute__ ((aligned (16))) static u8 tweak[0x10];
__attribute__ ((aligned (16))) static u64 prev_cluster = -1;
__attribute__ ((aligned (16))) static u32 prev_sector = 0;
u32 tweak_exp = 0;
bool regen_tweak = true;
if (prev_cluster != sector / 0x20) { // sector in different cluster than last read
prev_cluster = sector / 0x20;
tweak_exp = sector % 0x20;
} else if (sector > prev_sector) { // sector in same cluster and past last sector
tweak_exp = sector - prev_sector - 1;
regen_tweak = false;
} else { // sector in same cluster and before or same as last sector
tweak_exp = sector % 0x20;
}
// fatfs will never pull more than a cluster
_emmc_xts(9, 8, 1, tweak, regen_tweak, tweak_exp, prev_cluster, buff, buff, count * 0x200);
nx_emmc_part_write(&storage, prodinfo_part, sector, count, buff);
prev_sector = sector + count - 1;
if (enc == 0)
{
if (nx_emmc_part_write(&storage, prodinfo_part, sector, count, buff))
{
return RES_OK;
}
return RES_ERROR;
}
__attribute__((aligned(16))) static u8 tweak[0x10];
__attribute__((aligned(16))) static u64 prev_cluster = -1;
__attribute__((aligned(16))) static u32 prev_sector = 0;
u32 tweak_exp = 0;
bool regen_tweak = true;
if (prev_cluster != sector / 0x20)
{ // sector in different cluster than last read
prev_cluster = sector / 0x20;
tweak_exp = sector % 0x20;
}
else if (sector > prev_sector)
{ // sector in same cluster and past last sector
tweak_exp = sector - prev_sector - 1;
regen_tweak = false;
}
else
{ // sector in same cluster and before or same as last sector
tweak_exp = sector % 0x20;
}
// fatfs will never pull more than a cluster
_emmc_xts(9, 8, 1, tweak, regen_tweak, tweak_exp, prev_cluster, buff, buff, count * 0x200);
if (nx_emmc_part_write(&storage, prodinfo_part, sector, count, buff))
{
prev_sector = sector + count - 1;
return RES_OK;
}
return RES_ERROR;
}
DRESULT disk_read (
BYTE pdrv, /* Physical drive number to identify the drive */
BYTE *buff, /* Data buffer to store read data */
DWORD sector, /* Start sector in LBA */
UINT count /* Number of sectors to read */
DRESULT disk_read(
BYTE pdrv, /* Physical drive number to identify the drive */
BYTE *buff, /* Data buffer to store read data */
DWORD sector, /* Start sector in LBA */
UINT count /* Number of sectors to read */
)
{
switch (pdrv)
@ -229,16 +243,19 @@ DRESULT disk_read (
return sdmmc_storage_read(&sd_storage, sector, count, buff) ? RES_OK : RES_ERROR;
case 1:;
__attribute__ ((aligned (16))) static u8 tweak[0x10];
__attribute__ ((aligned (16))) static u64 prev_cluster = -1;
__attribute__ ((aligned (16))) static u32 prev_sector = 0;
__attribute__((aligned(16))) static u8 tweak[0x10];
__attribute__((aligned(16))) static u64 prev_cluster = -1;
__attribute__((aligned(16))) static u32 prev_sector = 0;
u32 tweak_exp = 0;
bool regen_tweak = true, cache_sector = false;
u32 s = 0;
if (count == 1) {
for ( ; s < secindex; s++) {
if (sector_cache[s].sector == sector) {
if (count == 1)
{
for (; s < secindex; s++)
{
if (sector_cache[s].sector == sector)
{
sector_cache[s].visit_count++;
memcpy(buff, sector_cache[s].cached_sector, 0x200);
memcpy(tweak, sector_cache[s].tweak, 0x10);
@ -248,7 +265,8 @@ DRESULT disk_read (
}
}
// add to cache
if (s == secindex && s < MAX_SEC_CACHE_ENTRIES) {
if (s == secindex && s < MAX_SEC_CACHE_ENTRIES)
{
sector_cache[s].sector = sector;
sector_cache[s].visit_count++;
cache_sector = true;
@ -256,20 +274,27 @@ DRESULT disk_read (
}
}
if (nx_emmc_part_read(&storage, system_part, sector, count, buff)) {
if (prev_cluster != sector / 0x20) { // sector in different cluster than last read
if (nx_emmc_part_read(&storage, system_part, sector, count, buff))
{
if (prev_cluster != sector / 0x20)
{ // sector in different cluster than last read
prev_cluster = sector / 0x20;
tweak_exp = sector % 0x20;
} else if (sector > prev_sector) { // sector in same cluster and past last sector
}
else if (sector > prev_sector)
{ // sector in same cluster and past last sector
tweak_exp = sector - prev_sector - 1;
regen_tweak = false;
} else { // sector in same cluster and before or same as last sector
}
else
{ // sector in same cluster and before or same as last sector
tweak_exp = sector % 0x20;
}
// fatfs will never pull more than a cluster
_emmc_xts(9, 8, 0, tweak, regen_tweak, tweak_exp, prev_cluster, buff, buff, count * 0x200);
if (cache_sector) {
if (cache_sector)
{
memcpy(sector_cache[s].cached_sector, buff, 0x200);
memcpy(sector_cache[s].tweak, tweak, 0x10);
}
@ -281,11 +306,11 @@ DRESULT disk_read (
return RES_ERROR;
}
DRESULT disk_write (
BYTE pdrv, /* Physical drive number to identify the drive */
const BYTE *buff, /* Data to be written */
DWORD sector, /* Start sector in LBA */
UINT count /* Number of sectors to write */
DRESULT disk_write(
BYTE pdrv, /* Physical drive number to identify the drive */
const BYTE *buff, /* Data to be written */
DWORD sector, /* Start sector in LBA */
UINT count /* Number of sectors to write */
)
{
if (pdrv == 1)
@ -293,10 +318,10 @@ DRESULT disk_write (
return sdmmc_storage_write(&sd_storage, sector, count, (void *)buff) ? RES_OK : RES_ERROR;
}
DRESULT disk_ioctl (
BYTE pdrv, /* Physical drive number (0..) */
BYTE cmd, /* Control code */
void *buff /* Buffer to send/receive control data */
DRESULT disk_ioctl(
BYTE pdrv, /* Physical drive number (0..) */
BYTE cmd, /* Control code */
void *buff /* Buffer to send/receive control data */
)
{
return RES_OK;