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hekate/nyx: move emmc ops to bdk and adhere to changes

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This commit is contained in:
CTCaer
2022-01-20 13:15:04 +02:00
parent b08e36a7b0
commit 28167b7304
24 changed files with 176 additions and 576 deletions
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94
nyx/nyx_gui/storage/nx_emmc_bis.c
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@@ -2,7 +2,7 @@
* eMMC BIS driver for Nintendo Switch
*
* Copyright (c) 2019-2020 shchmue
* Copyright (c) 2019-2021 CTCaer
* Copyright (c) 2019-2022 CTCaer
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
@@ -21,8 +21,6 @@
#include <bdk.h>
#include "../storage/nx_emmc.h"
#define BIS_CLUSTER_SECTORS 32
#define BIS_CLUSTER_SIZE 16384
#define BIS_CACHE_MAX_ENTRIES 16384
@@ -52,74 +50,6 @@ static emmc_part_t *system_part = NULL;
static u32 *cache_lookup_tbl = (u32 *)NX_BIS_LOOKUP_ADDR;
static bis_cache_t *bis_cache = (bis_cache_t *)NX_BIS_CACHE_ADDR;
static void _gf256_mul_x_le(void *block)
{
u32 *pdata = (u32 *)block;
u32 carry = 0;
for (u32 i = 0; i < 4; i++)
{
u32 b = pdata[i];
pdata[i] = (b << 1) | carry;
carry = b >> 31;
}
if (carry)
pdata[0x0] ^= 0x87;
}
static int _nx_aes_xts_crypt_sec(u32 tweak_ks, u32 crypt_ks, u32 enc, u8 *tweak, bool regen_tweak, u32 tweak_exp, u64 sec, void *dst, void *src, u32 sec_size)
{
u32 *pdst = (u32 *)dst;
u32 *psrc = (u32 *)src;
u32 *ptweak = (u32 *)tweak;
if (regen_tweak)
{
for (int i = 0xF; i >= 0; i--)
{
tweak[i] = sec & 0xFF;
sec >>= 8;
}
if (!se_aes_crypt_block_ecb(tweak_ks, ENCRYPT, tweak, tweak))
return 0;
}
// tweak_exp allows us to use a saved tweak to reduce _gf256_mul_x_le calls.
for (u32 i = 0; i < (tweak_exp << 5); i++)
_gf256_mul_x_le(tweak);
u8 orig_tweak[SE_KEY_128_SIZE] __attribute__((aligned(4)));
memcpy(orig_tweak, tweak, SE_KEY_128_SIZE);
// We are assuming a 16 sector aligned size in this implementation.
for (u32 i = 0; i < (sec_size >> 4); i++)
{
for (u32 j = 0; j < 4; j++)
pdst[j] = psrc[j] ^ ptweak[j];
_gf256_mul_x_le(tweak);
psrc += 4;
pdst += 4;
}
if (!se_aes_crypt_ecb(crypt_ks, enc, dst, sec_size, dst, sec_size))
return 0;
pdst = (u32 *)dst;
ptweak = (u32 *)orig_tweak;
for (u32 i = 0; i < (sec_size >> 4); i++)
{
for (u32 j = 0; j < 4; j++)
pdst[j] = pdst[j] ^ ptweak[j];
_gf256_mul_x_le(orig_tweak);
pdst += 4;
}
return 1;
}
static int nx_emmc_bis_write_block(u32 sector, u32 count, void *buff, bool flush)
{
if (!system_part)
@@ -137,7 +67,7 @@ static int nx_emmc_bis_write_block(u32 sector, u32 count, void *buff, bool flush
if (is_cached)
{
if (buff)
memcpy(bis_cache->clusters[lookup_idx].data + sector_in_cluster * NX_EMMC_BLOCKSIZE, buff, count * NX_EMMC_BLOCKSIZE);
memcpy(bis_cache->clusters[lookup_idx].data + sector_in_cluster * EMMC_BLOCKSIZE, buff, count * EMMC_BLOCKSIZE);
else
buff = bis_cache->clusters[lookup_idx].data;
if (!bis_cache->clusters[lookup_idx].dirty)
@@ -154,12 +84,12 @@ static int nx_emmc_bis_write_block(u32 sector, u32 count, void *buff, bool flush
}
// Encrypt cluster.
if (!_nx_aes_xts_crypt_sec(ks_tweak, ks_crypt, 1, tweak, true, sector_in_cluster, cluster, bis_cache->dma_buff, buff, count * NX_EMMC_BLOCKSIZE))
if (!se_aes_xts_crypt_sec_nx(ks_tweak, ks_crypt, ENCRYPT, cluster, tweak, true, sector_in_cluster, bis_cache->dma_buff, buff, count * EMMC_BLOCKSIZE))
return 1; // Encryption error.
// If not reading from cache, do a regular read and decrypt.
if (!emu_offset)
res = nx_emmc_part_write(&emmc_storage, system_part, sector, count, bis_cache->dma_buff);
res = emmc_part_write(system_part, sector, count, bis_cache->dma_buff);
else
res = sdmmc_storage_write(&sd_storage, emu_offset + system_part->lba_start + sector, count, bis_cache->dma_buff);
if (!res)
@@ -219,7 +149,7 @@ static int nx_emmc_bis_read_block_normal(u32 sector, u32 count, void *buff)
// If not reading from cache, do a regular read and decrypt.
if (!emu_offset)
res = nx_emmc_part_read(&emmc_storage, system_part, sector, count, bis_cache->dma_buff);
res = emmc_part_read(system_part, sector, count, bis_cache->dma_buff);
else
res = sdmmc_storage_read(&sd_storage, emu_offset + system_part->lba_start + sector, count, bis_cache->dma_buff);
if (!res)
@@ -240,7 +170,7 @@ static int nx_emmc_bis_read_block_normal(u32 sector, u32 count, void *buff)
tweak_exp = sector_in_cluster;
// Maximum one cluster (1 XTS crypto block 16KB).
if (!_nx_aes_xts_crypt_sec(ks_tweak, ks_crypt, 0, tweak, regen_tweak, tweak_exp, prev_cluster, buff, bis_cache->dma_buff, count * NX_EMMC_BLOCKSIZE))
if (!se_aes_xts_crypt_sec_nx(ks_tweak, ks_crypt, DECRYPT, prev_cluster, tweak, regen_tweak, tweak_exp, buff, bis_cache->dma_buff, count * EMMC_BLOCKSIZE))
return 1; // R/W error.
prev_sector = sector + count - 1;
@@ -260,7 +190,7 @@ static int nx_emmc_bis_read_block_cached(u32 sector, u32 count, void *buff)
// Read from cached cluster.
if (lookup_idx != (u32)BIS_CACHE_LOOKUP_TBL_EMPTY_ENTRY)
{
memcpy(buff, bis_cache->clusters[lookup_idx].data + sector_in_cluster * NX_EMMC_BLOCKSIZE, count * NX_EMMC_BLOCKSIZE);
memcpy(buff, bis_cache->clusters[lookup_idx].data + sector_in_cluster * EMMC_BLOCKSIZE, count * EMMC_BLOCKSIZE);
return 0; // Success.
}
@@ -276,19 +206,19 @@ static int nx_emmc_bis_read_block_cached(u32 sector, u32 count, void *buff)
// Read the whole cluster the sector resides in.
if (!emu_offset)
res = nx_emmc_part_read(&emmc_storage, system_part, cluster_sector, BIS_CLUSTER_SECTORS, bis_cache->dma_buff);
res = emmc_part_read(system_part, cluster_sector, BIS_CLUSTER_SECTORS, bis_cache->dma_buff);
else
res = sdmmc_storage_read(&sd_storage, emu_offset + system_part->lba_start + cluster_sector, BIS_CLUSTER_SECTORS, bis_cache->dma_buff);
if (!res)
return 1; // R/W error.
// Decrypt cluster.
if (!_nx_aes_xts_crypt_sec(ks_tweak, ks_crypt, 0, cache_tweak, true, 0, cluster, bis_cache->dma_buff, bis_cache->dma_buff, BIS_CLUSTER_SIZE))
if (!se_aes_xts_crypt_sec_nx(ks_tweak, ks_crypt, DECRYPT, cluster, cache_tweak, true, 0, bis_cache->dma_buff, bis_cache->dma_buff, BIS_CLUSTER_SIZE))
return 1; // Decryption error.
// Copy to cluster cache.
memcpy(bis_cache->clusters[bis_cache->top_idx].data, bis_cache->dma_buff, BIS_CLUSTER_SIZE);
memcpy(buff, bis_cache->dma_buff + sector_in_cluster * NX_EMMC_BLOCKSIZE, count * NX_EMMC_BLOCKSIZE);
memcpy(buff, bis_cache->dma_buff + sector_in_cluster * EMMC_BLOCKSIZE, count * EMMC_BLOCKSIZE);
// Increment cache count.
bis_cache->top_idx++;
@@ -320,7 +250,7 @@ int nx_emmc_bis_read(u32 sector, u32 count, void *buff)
count -= sct_cnt;
curr_sct += sct_cnt;
buf += sct_cnt * NX_EMMC_BLOCKSIZE;
buf += sct_cnt * EMMC_BLOCKSIZE;
}
return 1;
@@ -339,7 +269,7 @@ int nx_emmc_bis_write(u32 sector, u32 count, void *buff)
count -= sct_cnt;
curr_sct += sct_cnt;
buf += sct_cnt * NX_EMMC_BLOCKSIZE;
buf += sct_cnt * EMMC_BLOCKSIZE;
}
return 1;