mirror of
https://github.com/CTCaer/hekate
synced 2024-11-08 21:06:34 +00:00
458 lines
14 KiB
C
458 lines
14 KiB
C
/*
|
|
* Copyright (c) 2018 naehrwert
|
|
* Copyright (c) 2018 st4rk
|
|
* Copyright (c) 2018-2021 CTCaer
|
|
* Copyright (c) 2018 balika011
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify it
|
|
* under the terms and conditions of the GNU General Public License,
|
|
* version 2, as published by the Free Software Foundation.
|
|
*
|
|
* This program is distributed in the hope it will be useful, but WITHOUT
|
|
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
|
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
|
|
* more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#include <string.h>
|
|
#include <stdlib.h>
|
|
|
|
#include <bdk.h>
|
|
|
|
#include "hos.h"
|
|
#include "pkg1.h"
|
|
#include "../config.h"
|
|
#include <libs/compr/lz4.h>
|
|
|
|
extern hekate_config h_cfg;
|
|
|
|
// Secmon package2 signature/hash checks patches for Erista.
|
|
#define SM_100_ADR 0x4002B020 // Original: 0x40014020.
|
|
PATCHSET_DEF(_secmon_1_patchset,
|
|
// Patch the relocator to be able to run from SM_100_ADR.
|
|
{ 0x1E0, _ADRP(0, 0x7C013000 - _PAGEOFF(SM_100_ADR)) },
|
|
// Patch package2 signature/hash checks.
|
|
{ 0x9F0 + 0xADC, _NOP() }
|
|
);
|
|
|
|
PATCHSET_DEF(_secmon_2_patchset,
|
|
// Patch package2 signature/hash checks.
|
|
{ 0xAC8 + 0xAAC, _NOP() }
|
|
);
|
|
|
|
PATCHSET_DEF(_secmon_3_patchset,
|
|
// Patch package2 signature/hash checks.
|
|
{ 0xAC8 + 0xA30, _NOP() }
|
|
);
|
|
|
|
PATCHSET_DEF(_secmon_4_patchset,
|
|
// Patch package2 signature/hash checks.
|
|
{ 0x2300 + 0x5EFC, _NOP() }
|
|
);
|
|
|
|
PATCHSET_DEF(_secmon_5_patchset,
|
|
// Patch package2 signature/hash checks.
|
|
{ 0xDA8 + 0xC9C, _NOP() }
|
|
);
|
|
|
|
PATCHSET_DEF(_secmon_6_patchset,
|
|
// Patch package2 signature/hash checks.
|
|
{ 0xDC8 + 0xE90, _NOP() }
|
|
// Fix sleep mode for debug.
|
|
// { 0x1A68 + 0x3854, 0x94000E45 }, //gpio_config_for_uart.
|
|
// { 0x1A68 + 0x3858, 0x97FFFC0F }, //clkrst_reboot_uarta.
|
|
// { 0x1A68 + 0x385C, 0x52A00021 }, //MOV W1, #0x10000 ; baudrate.
|
|
// { 0x1A68 + 0x3860, 0x2A1F03E0 }, //MOV W0, WZR ; uart_port -> A.
|
|
// { 0x1A68 + 0x3864, 0x72984001 }, //MOVK W1, #0xC200 ; baudrate.
|
|
// { 0x1A68 + 0x3868, 0x94000C8C }, //uart_configure.
|
|
// { 0x1A68 + 0x3A6C, _NOP() } // warmboot UARTA cfg.
|
|
);
|
|
|
|
PATCHSET_DEF(_secmon_62_patchset,
|
|
// Patch package2 signature/hash checks.
|
|
{ 0xDC8 + 0xC74, _NOP() }
|
|
// Fix sleep mode for debug.
|
|
// { 0x2AC8 + 0x3854, 0x94000F42 }, //gpio_config_for_uart.
|
|
// { 0x2AC8 + 0x3858, 0x97FFFC0F }, //clkrst_reboot_uarta.
|
|
// { 0x2AC8 + 0x385C, 0x52A00021 }, //MOV W1, #0x10000 ; baudrate.
|
|
// { 0x2AC8 + 0x3860, 0x2A1F03E0 }, //MOV W0, WZR ; uart_port -> A.
|
|
// { 0x2AC8 + 0x3864, 0x72984001 }, //MOVK W1, #0xC200 ; baudrate.
|
|
// { 0x2AC8 + 0x3868, 0x94000D89 }, //uart_configure.
|
|
// { 0x2AC8 + 0x3A6C, _NOP() } // warmboot UARTA cfg.
|
|
);
|
|
|
|
// Secmon patches for Mariko.
|
|
#define TZRAM_PROG_ADDR (TZRAM_BASE + 0x800)
|
|
#define TZRAM_COMPR_PROG_OFF 0xE04
|
|
#define TZRAM_PROG_PK2_SIG_PATCH (TZRAM_PROG_ADDR + 0xC10)
|
|
#define TZRAM_PROG_PK2_SIG_PATCH_1000 (TZRAM_PROG_ADDR + 0xD70)
|
|
PATCHSET_DEF(_secmon_6_mariko_patchset,
|
|
// Patch package2 decryption and signature/hash checks.
|
|
{ 0xDC8 + 0xE94, _NOP() }
|
|
);
|
|
|
|
PATCHSET_DEF(_secmon_620_mariko_patchset,
|
|
// Patch package2 decryption and signature/hash checks.
|
|
{ 0xDC8 + 0xC78, _NOP() }
|
|
);
|
|
|
|
// From 7.0.0 and above secmon is compressed.
|
|
PATCHSET_DEF(_secmon_7_mariko_patchset,
|
|
// Patch out decompression of program payload.
|
|
{ 0x82C, _NOP() }
|
|
);
|
|
|
|
const u16 _secmon_mariko_prog_comp_size[] = {
|
|
0x6B03, // 7.0.0. Patch offset: 0xC10.
|
|
0x6B16, // 7.0.1. Patch offset: 0xC10.
|
|
0x6B23, // 8.0.0. Patch offset: 0xC10.
|
|
0x6B84, // 8.1.0. Patch offset: 0xC10.
|
|
0x6C90, // 9.0.0. Patch offset: 0xC10.
|
|
0x6CE5, // 9.1.0. Patch offset: 0xC10.
|
|
0x6EE9, // 10.0.0. Patch offset: 0xD70.
|
|
};
|
|
|
|
// Erista fuse check warmboot patches.
|
|
#define _NOPv7() 0xE320F000
|
|
PATCHSET_DEF(_warmboot_1_patchset,
|
|
{ 0x4DC, _NOPv7() } // Fuse check.
|
|
);
|
|
|
|
PATCHSET_DEF(_warmboot_3_patchset,
|
|
{ 0x4DC, _NOPv7() }, // Fuse check.
|
|
{ 0x4F0, _NOPv7() } // Segment id check.
|
|
);
|
|
|
|
PATCHSET_DEF(_warmboot_4_patchset,
|
|
{ 0x544, _NOPv7() }, // Fuse check.
|
|
{ 0x558, _NOPv7() } // Segment id check.
|
|
);
|
|
|
|
/*
|
|
* package1.1 header: <wb, ldr, sm>
|
|
* package1.1 layout:
|
|
* 1.0: {sm, ldr, wb} { 2, 1, 0 }
|
|
* 2.0+: {wb, ldr, sm} { 0, 1, 2 }
|
|
* 4.0+: {ldr, sm, wb} { 1, 2, 0 }
|
|
*/
|
|
|
|
static const u8 sec_map_100[3] = { PK11_SECTION_SM, PK11_SECTION_LD, PK11_SECTION_WB };
|
|
static const u8 sec_map_2xx[3] = { PK11_SECTION_WB, PK11_SECTION_LD, PK11_SECTION_SM };
|
|
static const u8 sec_map_4xx[3] = { PK11_SECTION_LD, PK11_SECTION_SM, PK11_SECTION_WB };
|
|
|
|
// ID (Timestamp), KB, Fuses, TSEC, PK11, SECMON, Warmboot.
|
|
static const pkg1_id_t _pkg1_ids[] = {
|
|
{ "20161121183008", 0, 1, 0x1900, 0x3FE0, SM_100_ADR, 0x8000D000, _secmon_1_patchset }, // 1.0.0 (Patched relocator).
|
|
{ "20170210155124", 0, 2, 0x1900, 0x3FE0, 0x4002D000, 0x8000D000, _secmon_2_patchset }, // 2.0.0 - 2.3.0.
|
|
{ "20170519101410", 1, 3, 0x1A00, 0x3FE0, 0x4002D000, 0x8000D000, _secmon_3_patchset }, // 3.0.0.
|
|
{ "20170710161758", 2, 4, 0x1A00, 0x3FE0, 0x4002D000, 0x8000D000, _secmon_3_patchset }, // 3.0.1 - 3.0.2.
|
|
{ "20170921172629", 3, 5, 0x1800, 0x3FE0, 0x4002B000, 0x4003B000, _secmon_4_patchset }, // 4.0.0 - 4.1.0.
|
|
{ "20180220163747", 4, 6, 0x1900, 0x3FE0, 0x4002B000, 0x4003B000, _secmon_5_patchset }, // 5.0.0 - 5.1.0.
|
|
{ "20180802162753", 5, 7, 0x1900, 0x3FE0, 0x4002B000, 0x4003D800, _secmon_6_patchset }, // 6.0.0 - 6.1.0.
|
|
{ "20181107105733", 6, 8, 0x0E00, 0x6FE0, 0x4002B000, 0x4003D800, _secmon_62_patchset}, // 6.2.0.
|
|
{ "20181218175730", 7, 9, 0x0F00, 0x6FE0, 0x40030000, 0x4003E000, NULL }, // 7.0.0.
|
|
{ "20190208150037", 7, 9, 0x0F00, 0x6FE0, 0x40030000, 0x4003E000, NULL }, // 7.0.1.
|
|
{ "20190314172056", 7, 9, 0x0E00, 0x6FE0, 0x40030000, 0x4003E000, NULL }, // 8.0.0 - 8.0.1.
|
|
{ "20190531152432", 8, 10, 0x0E00, 0x6FE0, 0x40030000, 0x4003E000, NULL }, // 8.1.0 - 8.1.1.
|
|
{ "20190809135709", 9, 11, 0x0E00, 0x6FE0, 0x40030000, 0x4003E000, NULL }, // 9.0.0 - 9.0.1.
|
|
{ "20191021113848", 10, 12, 0x0E00, 0x6FE0, 0x40030000, 0x4003E000, NULL }, // 9.1.0 - 9.2.0.
|
|
{ "20200303104606", 10, 13, 0x0E00, 0x6FE0, 0x40030000, 0x4003E000, NULL }, // 10.0.0 - 10.2.0.
|
|
{ "20201030110855", 10, 14, 0x0E00, 0x6FE0, 0x40030000, 0x4003E000, NULL }, // 11.0.0 - 11.0.1.
|
|
{ "20210129111626", 10, 14, 0x0E00, 0x6FE0, 0x40030000, 0x4003E000, NULL }, // 12.0.0 - 12.0.1.
|
|
{ "20210422145837", 10, 15, 0x0E00, 0x6FE0, 0x40030000, 0x4003E000, NULL }, // 12.0.2 - 12.0.3.
|
|
{ "20210607122020", 11, 15, 0x0E00, 0x6FE0, 0x40030000, 0x4003E000, NULL }, // 12.1.0.
|
|
{ "20210805123730", 12, 15, 0x0E00, 0x6FE0, 0x40030000, 0x4003E000, NULL }, // 13.0.0 - 13.2.0.
|
|
{ "20220105094454", 12, 16, 0x0E00, 0x6FE0, 0x40030000, 0x4003E000, NULL }, // 13.2.1.
|
|
{ "20220209100018", 13, 16, 0x0E00, 0x6FE0, 0x40030000, 0x4003E000, NULL }, // 14.0.0+
|
|
};
|
|
|
|
const pkg1_id_t *pkg1_get_latest()
|
|
{
|
|
return &_pkg1_ids[ARRAY_SIZE(_pkg1_ids) - 1];
|
|
}
|
|
|
|
const pkg1_id_t *pkg1_identify(u8 *pkg1)
|
|
{
|
|
char build_date[15];
|
|
pk1_hdr_t *hdr = (pk1_hdr_t *)pkg1;
|
|
|
|
memcpy(build_date, hdr->timestamp, 14);
|
|
build_date[14] = 0;
|
|
gfx_printf("Found pkg1 ('%s').\n\n", build_date);
|
|
|
|
for (int i = ARRAY_SIZE(_pkg1_ids) - 1; i >= 0; i--)
|
|
if (!memcmp(hdr->timestamp, _pkg1_ids[i].id, 8))
|
|
return &_pkg1_ids[i];
|
|
|
|
return NULL;
|
|
}
|
|
|
|
int pkg1_decrypt(const pkg1_id_t *id, u8 *pkg1)
|
|
{
|
|
pk11_hdr_t *hdr;
|
|
|
|
// Decrypt package1.
|
|
if (!h_cfg.t210b01)
|
|
{
|
|
u8 *pkg11 = pkg1 + id->pkg11_off;
|
|
u32 pkg11_size = *(u32 *)pkg11;
|
|
hdr = (pk11_hdr_t *)(pkg11 + 0x20);
|
|
se_aes_crypt_ctr(11, hdr, pkg11_size, hdr, pkg11_size, pkg11 + 0x10);
|
|
}
|
|
else
|
|
{
|
|
bl_hdr_t210b01_t *oem_hdr = (bl_hdr_t210b01_t *)pkg1;
|
|
pkg1 += sizeof(bl_hdr_t210b01_t);
|
|
hdr = (pk11_hdr_t *)(pkg1 + id->pkg11_off + 0x20);
|
|
|
|
// Use BEK for T210B01.
|
|
// Additionally, skip 0x20 bytes from decryption to maintain the header.
|
|
se_aes_iv_clear(13);
|
|
se_aes_crypt_cbc(13, DECRYPT, pkg1 + 0x20, oem_hdr->size - 0x20, pkg1 + 0x20, oem_hdr->size - 0x20);
|
|
}
|
|
|
|
// Return if header is valid.
|
|
return (hdr->magic == PKG1_MAGIC);
|
|
}
|
|
|
|
const u8 *pkg1_unpack(void *wm_dst, u32 *wb_sz, void *sm_dst, void *ldr_dst, const pkg1_id_t *id, u8 *pkg1)
|
|
{
|
|
const u8 *sec_map;
|
|
const pk11_hdr_t *hdr = (pk11_hdr_t *)(pkg1 + id->pkg11_off + 0x20);
|
|
|
|
u32 sec_size[3] = { hdr->wb_size, hdr->ldr_size, hdr->sm_size };
|
|
//u32 sec_off[3] = { hdr->wb_off, hdr->ldr_off, hdr->sm_off };
|
|
|
|
// Get correct header mapping.
|
|
if (id->fuses == 1) // 1.0.0.
|
|
sec_map = sec_map_100;
|
|
else if (id->fuses >= 2 && id->fuses <= 4) // 2.0.0 - 3.0.2.
|
|
sec_map = sec_map_2xx;
|
|
else // 4.0.0+
|
|
sec_map = sec_map_4xx;
|
|
|
|
// Copy secmon, warmboot and nx bootloader payloads.
|
|
u8 *pdata = (u8 *)hdr + sizeof(pk11_hdr_t);
|
|
for (u32 i = 0; i < 3; i++)
|
|
{
|
|
if (sec_map[i] == PK11_SECTION_WB && wm_dst)
|
|
{
|
|
memcpy(wm_dst, pdata, sec_size[sec_map[i]]);
|
|
if (wb_sz)
|
|
*wb_sz = sec_size[sec_map[i]];
|
|
}
|
|
else if (sec_map[i] == PK11_SECTION_LD && ldr_dst)
|
|
memcpy(ldr_dst, pdata, sec_size[sec_map[i]]);
|
|
else if (sec_map[i] == PK11_SECTION_SM && sm_dst)
|
|
memcpy(sm_dst, pdata, sec_size[sec_map[i]]);
|
|
pdata += sec_size[sec_map[i]];
|
|
}
|
|
|
|
return sec_map;
|
|
}
|
|
|
|
void pkg1_secmon_patch(void *hos_ctxt, u32 secmon_base, bool t210b01)
|
|
{
|
|
patch_t *secmon_patchset;
|
|
launch_ctxt_t *ctxt = (launch_ctxt_t *)hos_ctxt;
|
|
|
|
// Patch Secmon to allow for an unsigned package2 and patched kernel.
|
|
if (!t210b01 && ctxt->pkg1_id->secmon_patchset)
|
|
{
|
|
// For T210 till 6.2.0 the patching is used as is, because of no compression.
|
|
secmon_patchset = ctxt->pkg1_id->secmon_patchset;
|
|
}
|
|
#ifdef HOS_MARIKO_STOCK_SECMON
|
|
else if (t210b01)
|
|
{
|
|
// For T210B01 we patch 6.X.X as is. Otherwise we decompress the program payload.
|
|
if (ctxt->pkg1_id->kb == KB_FIRMWARE_VERSION_600)
|
|
secmon_patchset = _secmon_6_mariko_patchset;
|
|
else if (ctxt->pkg1_id->kb == KB_FIRMWARE_VERSION_620)
|
|
secmon_patchset = _secmon_620_mariko_patchset;
|
|
else
|
|
{
|
|
// Patch uncompress of program payload clear TZRAM.
|
|
secmon_patchset = _secmon_7_mariko_patchset;
|
|
memset((void *)TZRAM_PROG_ADDR, 0, 0x38800);
|
|
|
|
// Get size of compressed program payload and set patch offset.
|
|
u32 idx = ctxt->pkg1_id->kb - KB_FIRMWARE_VERSION_700;
|
|
u32 patch_offset = TZRAM_PROG_PK2_SIG_PATCH;
|
|
if (ctxt->pkg1_id->kb > KB_FIRMWARE_VERSION_910 || !memcmp(ctxt->pkg1_id->id, "20200303104606", 8)) //TODO: Add 11.0.0 support.
|
|
{
|
|
idx++;
|
|
patch_offset = TZRAM_PROG_PK2_SIG_PATCH_1000;
|
|
}
|
|
|
|
// Uncompress directly to TZRAM.
|
|
LZ4_decompress_fast((const char*)(secmon_base + TZRAM_COMPR_PROG_OFF),
|
|
(char *)TZRAM_PROG_ADDR, _secmon_mariko_prog_comp_size[idx]);
|
|
|
|
// Patch package2 signature/hash checks.
|
|
*(vu32 *)patch_offset = _NOP();
|
|
}
|
|
}
|
|
#endif
|
|
else
|
|
return;
|
|
|
|
// Patch Secmon.
|
|
gfx_printf("%kPatching Secure Monitor%k\n", TXT_CLR_ORANGE, TXT_CLR_DEFAULT);
|
|
for (u32 i = 0; secmon_patchset[i].off != 0xFFFFFFFF; i++)
|
|
*(vu32 *)(secmon_base + secmon_patchset[i].off) = secmon_patchset[i].val;
|
|
}
|
|
|
|
void pkg1_warmboot_patch(void *hos_ctxt)
|
|
{
|
|
launch_ctxt_t *ctxt = (launch_ctxt_t *)hos_ctxt;
|
|
patch_t *warmboot_patchset;
|
|
|
|
// Patch warmboot on T210 to allow downgrading.
|
|
switch (ctxt->pkg1_id->kb)
|
|
{
|
|
case 0:
|
|
warmboot_patchset = _warmboot_1_patchset;
|
|
break;
|
|
case 1 ... 2:
|
|
warmboot_patchset = _warmboot_3_patchset;
|
|
break;
|
|
default: // 4.0.0 - 6.2.0.
|
|
warmboot_patchset = _warmboot_4_patchset;
|
|
break;
|
|
}
|
|
gfx_printf("%kPatching Warmboot%k\n", TXT_CLR_ORANGE, TXT_CLR_DEFAULT);
|
|
for (u32 i = 0; warmboot_patchset[i].off != 0xFFFFFFFF; i++)
|
|
*(vu32 *)(ctxt->pkg1_id->warmboot_base + warmboot_patchset[i].off) = warmboot_patchset[i].val;
|
|
}
|
|
|
|
static void _warmboot_filename(char *out, u32 fuses)
|
|
{
|
|
if (fuses < 16)
|
|
{
|
|
out[19] = '0';
|
|
itoa(fuses, &out[19 + 1], 16);
|
|
}
|
|
else
|
|
itoa(fuses, &out[19], 16);
|
|
strcat(out, ".bin");
|
|
}
|
|
|
|
int pkg1_warmboot_config(void *hos_ctxt, u32 warmboot_base)
|
|
{
|
|
launch_ctxt_t *ctxt = (launch_ctxt_t *)hos_ctxt;
|
|
u32 kb = ctxt->pkg1_id->kb;
|
|
int res = 1;
|
|
|
|
// Set warmboot address in PMC if required.
|
|
if (kb <= KB_FIRMWARE_VERSION_301)
|
|
PMC(APBDEV_PMC_SCRATCH1) = warmboot_base;
|
|
|
|
if (h_cfg.t210b01)
|
|
{
|
|
u32 pa_id;
|
|
u32 fuses_max = 32; // Current ODM7 max.
|
|
u32 fuses_fw = ctxt->pkg1_id->fuses;
|
|
u8 burnt_fuses = bit_count(fuse_read_odm(7));
|
|
|
|
// Save current warmboot in storage cache (MWS) and check if another one is needed.
|
|
if (!ctxt->warmboot)
|
|
{
|
|
char path[128];
|
|
f_mkdir("warmboot_mariko");
|
|
strcpy(path, "warmboot_mariko/wb_");
|
|
_warmboot_filename(path, fuses_fw);
|
|
if (f_stat(path, NULL))
|
|
sd_save_to_file((void *)warmboot_base, ctxt->warmboot_size, path);
|
|
|
|
// Load warmboot fw from storage (MWS) if not matched.
|
|
if (burnt_fuses > fuses_fw)
|
|
{
|
|
u32 tmp_fuses = burnt_fuses;
|
|
while (true)
|
|
{
|
|
_warmboot_filename(path, burnt_fuses);
|
|
if (!f_stat(path, NULL))
|
|
{
|
|
ctxt->warmboot = sd_file_read(path, &ctxt->warmboot_size);
|
|
burnt_fuses = tmp_fuses;
|
|
break;
|
|
}
|
|
if (tmp_fuses >= fuses_max)
|
|
break;
|
|
tmp_fuses++;
|
|
}
|
|
|
|
// Check if proper warmboot firmware was found.
|
|
if (!ctxt->warmboot)
|
|
res = 0;
|
|
}
|
|
else // Replace burnt fuses with higher count.
|
|
burnt_fuses = fuses_fw;
|
|
}
|
|
|
|
// Configure Warmboot parameters. Anything lower is not supported.
|
|
switch (burnt_fuses)
|
|
{
|
|
case 7:
|
|
pa_id = 0x87;
|
|
break;
|
|
case 8: // 0x21 raise.
|
|
pa_id = 0xA8;
|
|
break;
|
|
default: // From 7.0.0 and up PA id raises by 0x21 with a static base.
|
|
pa_id = 0x108;
|
|
pa_id += 0x21 * (burnt_fuses - 8);
|
|
break;
|
|
}
|
|
|
|
// Set Warmboot Physical Address ID and lock SECURE_SCRATCH32 register.
|
|
PMC(APBDEV_PMC_SECURE_SCRATCH32) = pa_id;
|
|
PMC(APBDEV_PMC_SEC_DISABLE3) |= BIT(16);
|
|
}
|
|
else
|
|
{
|
|
// Set Warmboot Physical Address ID for 3.0.0 - 3.0.2.
|
|
if (kb == KB_FIRMWARE_VERSION_300)
|
|
PMC(APBDEV_PMC_SECURE_SCRATCH32) = 0xE3; // Warmboot 3.0.0 PA address id.
|
|
else if (kb == KB_FIRMWARE_VERSION_301)
|
|
PMC(APBDEV_PMC_SECURE_SCRATCH32) = 0x104; // Warmboot 3.0.1/.2 PA address id.
|
|
}
|
|
|
|
return res;
|
|
}
|
|
|
|
void pkg1_warmboot_rsa_mod(u32 warmboot_base)
|
|
{
|
|
// Set warmboot binary rsa modulus.
|
|
u8 *rsa_mod = (u8 *)malloc(512);
|
|
|
|
sdmmc_storage_set_mmc_partition(&emmc_storage, EMMC_BOOT0);
|
|
|
|
u32 sector;
|
|
u8 mod0, mod1;
|
|
|
|
// Get the correct RSA modulus byte masks.
|
|
nx_emmc_get_autorcm_masks(&mod0, &mod1);
|
|
|
|
// Iterate BCTs.
|
|
for (u32 i = 0; i < 4; i++)
|
|
{
|
|
sector = 1 + (32 * i); // 0x4000 bct + 0x200 offset.
|
|
sdmmc_storage_read(&emmc_storage, sector, 1, rsa_mod);
|
|
|
|
// Check if 2nd byte of modulus is correct.
|
|
if (rsa_mod[0x11] != mod1)
|
|
continue;
|
|
|
|
// Patch AutoRCM out.
|
|
rsa_mod[0x10] = mod0;
|
|
|
|
break;
|
|
}
|
|
|
|
memcpy((void *)(warmboot_base + 0x10), rsa_mod + 0x10, 0x100);
|
|
}
|