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Proper warmboot exploit impl and documentation

Side effect:
Fixed a bug where the dumped patched bootrom had the warmboot exploit patch

Co-Authored-By: Balázs Triszka <balika011@gmail.com>
This commit is contained in:
Kostas Missos 2018-12-17 21:10:13 +02:00
parent 4781dc2ab4
commit e105634b0d
5 changed files with 64 additions and 35 deletions

View file

@ -1165,7 +1165,7 @@ void ipl_main()
set_default_configuration();
// Save sdram lp0 config.
if (ianos_loader(true, "bootloader/sys/libsys_lp0.bso", DRAM_LIB, (void *)sdram_get_params()))
if (ianos_loader(true, "bootloader/sys/libsys_lp0.bso", DRAM_LIB, (void *)sdram_get_params_patched()))
h_cfg.errors |= ERR_LIBSYS_LP0;
display_init();

View file

@ -18,11 +18,11 @@
#include "../soc/t210.h"
#include "mc.h"
#include "emc.h"
#include "sdram_param_t210.h"
#include "../soc/pmc.h"
#include "../utils/util.h"
#include "../soc/fuse.h"
#include "../power/max77620.h"
#include "../mem/sdram_param_t210.h"
#include "../soc/clock.h"
#define CONFIG_SDRAM_COMPRESS_CFG
@ -388,9 +388,9 @@ break_nosleep:
EMC(EMC_ACPD_CONTROL) = params->emc_acpd_control;
EMC(EMC_TXDSRVTTGEN) = params->emc_txdsrvttgen;
EMC(EMC_CFG) = (params->emc_cfg & 0xE) | 0x3C00000;
if (params->boot_rom_patch_control & 0x80000000)
if (params->boot_rom_patch_control & (1 << 31))
{
*(vu32 *)(4 * (params->boot_rom_patch_control + 0x1C000000)) = params->boot_rom_patch_data;
*(vu32 *)(APB_MISC_BASE + params->boot_rom_patch_control * 4) = params->boot_rom_patch_data;
MC(MC_TIMING_CONTROL) = 1;
}
PMC(APBDEV_PMC_IO_DPD3_REQ) = ((4 * params->emc_pmc_scratch1 >> 2) + 0x40000000) & 0xCFFF0000;
@ -489,19 +489,47 @@ break_nosleep:
MC(MC_EMEM_CFG_ACCESS_CTRL) = 1; //Disable write access to a bunch of EMC registers.
}
const void *sdram_get_params()
sdram_params_t *sdram_get_params()
{
//TODO: sdram_id should be in [0, 7].
#ifdef CONFIG_SDRAM_COMPRESS_CFG
u8 *buf = (u8 *)0x40030000;
LZ_Uncompress(_dram_cfg_lz, buf, sizeof(_dram_cfg_lz));
return (const void *)&buf[sizeof(sdram_params_t) * _get_sdram_id()];
return (sdram_params_t *)&buf[sizeof(sdram_params_t) * _get_sdram_id()];
#else
return _dram_cfgs[_get_sdram_id()];
#endif
}
/*
* Function: sdram_get_params_patched
*
* This code implements a warmboot exploit. Warmboot, that is actually so hot, it burns Nvidia once again.
* If the boot_rom_patch_control's MSB is set, it uses it as an index to
* APB_MISC_BASE (u32 array) and sets it to the value of boot_rom_patch_data.
* (The MSB falls out when it gets multiplied by sizeof(u32)).
* Because the bootrom does not do any the boundary checks, it lets us write anywhere and anything.
* Ipatch hardware let us apply 12 changes to the bootrom and can be changed any time.
* The first patch is not needed any more when the exploit is triggered, so we overwrite that.
* 0x10459E is the address where it returns an error when the signature is not valid.
* We change that to MOV R0, #0, so we pass the check.
*
* Note: The modulus in the header must match and validated.
*/
sdram_params_t *sdram_get_params_patched()
{
sdram_params_t *sdram_params = sdram_get_params();
sdram_params->boot_rom_patch_control = (1 << 31) | (((IPATCH_BASE + 4) - APB_MISC_BASE) / 4);
u32 addr = 0x10459E; // Bootrom address for warmboot sig check.
u32 data = 0x2000; // MOV R0, #0.
sdram_params->boot_rom_patch_data = (addr / 2) << 16 | (data & 0xffff);
return sdram_params;
}
void sdram_init()
{
//TODO: sdram_id should be in [0,4].

View file

@ -17,8 +17,11 @@
#ifndef _SDRAM_H_
#define _SDRAM_H_
#include "sdram_param_t210.h"
void sdram_init();
const void *sdram_get_params();
sdram_params_t *sdram_get_params();
sdram_params_t *sdram_get_params_patched();
void sdram_lp0_save_params(const void *params);
#endif

View file

@ -1,6 +1,5 @@
/*
* Copyright (c) 2018 naehrwert
* 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,
@ -172,7 +171,7 @@ static const u8 _dram_cfg_0[1896] = {
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x46, 0x2C, 0x00, 0x04, 0x00, 0x00, 0x00, 0x00, 0xEC, 0x00, 0x00, 0x00,
0x01, 0x77, 0x00, 0xFC, 0x00, 0x20, 0xCF, 0x22, 0x00, 0x00, 0xF0, 0xFF,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xF0, 0xFF,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
};
@ -333,7 +332,7 @@ static const u8 _dram_cfg_1[1896] = {
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x46, 0x2C, 0x00, 0x04, 0x00, 0x00, 0x00, 0x00, 0xEC, 0x00, 0x00, 0x00,
0x01, 0x77, 0x00, 0xFC, 0x00, 0x20, 0xCF, 0x22, 0x00, 0x00, 0xF0, 0xFF,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xF0, 0xFF,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
};
@ -494,7 +493,7 @@ static const u8 _dram_cfg_2[1896] = {
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x46, 0x2C, 0x00, 0x04, 0x00, 0x00, 0x00, 0x00, 0xEC, 0x00, 0x00, 0x00,
0x01, 0x77, 0x00, 0xFC, 0x00, 0x20, 0xCF, 0x22, 0x00, 0x00, 0xF0, 0xFF,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xF0, 0xFF,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
};
@ -655,7 +654,7 @@ static const u8 _dram_cfg_3[1896] = {
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x46, 0x2C, 0x00, 0x04, 0x00, 0x00, 0x00, 0x00, 0xEC, 0x00, 0x00, 0x00,
0x01, 0x77, 0x00, 0xFC, 0x00, 0x20, 0xCF, 0x22, 0x00, 0x00, 0xF0, 0xFF,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xF0, 0xFF,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
};
@ -816,7 +815,7 @@ static const u8 _dram_cfg_4[1896] = {
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x46, 0x2C, 0x00, 0x04, 0x00, 0x00, 0x00, 0x00, 0xEC, 0x00, 0x00, 0x00,
0x01, 0x77, 0x00, 0xFC, 0x00, 0x20, 0xCF, 0x22, 0x00, 0x00, 0xF0, 0xFF,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xF0, 0xFF,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
};
@ -977,7 +976,7 @@ static const u8 _dram_cfg_5[1896] = {
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x46, 0x2C, 0x00, 0x04, 0x00, 0x00, 0x00, 0x00, 0xEC, 0x00, 0x00, 0x00,
0x01, 0x77, 0x00, 0xFC, 0x00, 0x20, 0xCF, 0x22, 0x00, 0x00, 0xF0, 0xFF,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xF0, 0xFF,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
};
@ -1138,7 +1137,7 @@ static const u8 _dram_cfg_6[1896] = {
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x46, 0x2C, 0x00, 0x04, 0x00, 0x00, 0x00, 0x00, 0xEC, 0x00, 0x00, 0x00,
0x01, 0x77, 0x00, 0xFC, 0x00, 0x20, 0xCF, 0x22, 0x00, 0x00, 0xF0, 0xFF,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xF0, 0xFF,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
};

View file

@ -1,6 +1,5 @@
/*
* Copyright (c) 2018 naehrwert
* 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,
@ -15,7 +14,7 @@
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
static const u8 _dram_cfg_lz[1270] = {
static const u8 _dram_cfg_lz[1262] = {
0x17, 0x03, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x22, 0x00, 0x00,
0x00, 0x2C, 0x17, 0x04, 0x09, 0x00, 0x17, 0x04, 0x04, 0x17, 0x08, 0x08,
0x17, 0x10, 0x10, 0x00, 0x00, 0x68, 0xBC, 0x01, 0x70, 0x0A, 0x00, 0x00,
@ -104,22 +103,22 @@ static const u8 _dram_cfg_lz[1270] = {
0x17, 0x17, 0x3A, 0x7E, 0x16, 0x40, 0x17, 0x0C, 0x8B, 0x1F, 0x17, 0x2A,
0x38, 0x1E, 0x17, 0x0A, 0x38, 0x17, 0x13, 0x81, 0x28, 0x00, 0xC0, 0x17,
0x17, 0x55, 0x46, 0x24, 0x17, 0x0A, 0x81, 0x28, 0x17, 0x14, 0x38, 0x17,
0x18, 0x81, 0x60, 0x46, 0x2C, 0x17, 0x06, 0x38, 0xEC, 0x00, 0x00, 0x00,
0x01, 0x77, 0x00, 0xFC, 0x00, 0x20, 0xCF, 0x22, 0x17, 0x10, 0x82, 0x3C,
0x17, 0x82, 0x0C, 0x8E, 0x68, 0x17, 0x04, 0x24, 0x17, 0x5C, 0x8E, 0x68,
0x17, 0x07, 0x82, 0x5F, 0x80, 0x17, 0x87, 0x01, 0x8E, 0x68, 0x02, 0x17,
0x81, 0x4A, 0x8E, 0x68, 0x17, 0x0C, 0x87, 0x78, 0x17, 0x85, 0x28, 0x8E,
0x68, 0x17, 0x8E, 0x68, 0x9D, 0x50, 0x17, 0x81, 0x24, 0x8E, 0x68, 0x17,
0x04, 0x2C, 0x17, 0x28, 0x8E, 0x68, 0x17, 0x04, 0x30, 0x17, 0x85, 0x3C,
0x8E, 0x68, 0x12, 0x17, 0x07, 0x85, 0x70, 0x17, 0x88, 0x74, 0x8E, 0x68,
0x17, 0x87, 0x3E, 0x9D, 0x50, 0x0C, 0x17, 0x04, 0x04, 0x17, 0x12, 0x8E,
0x68, 0x18, 0x17, 0x87, 0x12, 0xBB, 0x20, 0x17, 0x83, 0x04, 0x9D, 0x50,
0x15, 0x17, 0x05, 0x8D, 0x76, 0x17, 0x0F, 0x8B, 0x49, 0x17, 0x0B, 0x18,
0x32, 0x00, 0x2F, 0x00, 0x32, 0x00, 0x31, 0x00, 0x34, 0x00, 0x36, 0x00,
0x2F, 0x00, 0x33, 0x17, 0x09, 0x84, 0x0C, 0x17, 0x18, 0x18, 0x17, 0x20,
0x8E, 0x68, 0x15, 0x17, 0x07, 0x5A, 0x17, 0x06, 0x5E, 0x16, 0x00, 0x15,
0x17, 0x82, 0x40, 0x9D, 0x50, 0x17, 0x86, 0x5F, 0xBB, 0x20, 0x3A, 0x00,
0x00, 0x00, 0x1D, 0x17, 0x81, 0x4F, 0xAC, 0x38, 0x3B, 0x17, 0x04, 0x04,
0x17, 0x86, 0x30, 0x8E, 0x68, 0x17, 0x81, 0x53, 0xAC, 0x38, 0x07, 0x17,
0x0D, 0x8E, 0x68, 0xA3, 0x72, 0x17, 0x83, 0x10, 0x8E, 0x68
0x18, 0x81, 0x60, 0x46, 0x2C, 0x17, 0x06, 0x38, 0xEC, 0x17, 0x0D, 0x16,
0x17, 0x0E, 0x82, 0x3C, 0x17, 0x82, 0x0C, 0x8E, 0x68, 0x17, 0x04, 0x24,
0x17, 0x5C, 0x8E, 0x68, 0x17, 0x07, 0x82, 0x5F, 0x80, 0x17, 0x87, 0x01,
0x8E, 0x68, 0x02, 0x17, 0x81, 0x4A, 0x8E, 0x68, 0x17, 0x0C, 0x87, 0x78,
0x17, 0x85, 0x28, 0x8E, 0x68, 0x17, 0x8E, 0x68, 0x9D, 0x50, 0x17, 0x81,
0x24, 0x8E, 0x68, 0x17, 0x04, 0x2C, 0x17, 0x28, 0x8E, 0x68, 0x17, 0x04,
0x30, 0x17, 0x85, 0x3C, 0x8E, 0x68, 0x12, 0x17, 0x07, 0x85, 0x70, 0x17,
0x88, 0x74, 0x8E, 0x68, 0x17, 0x87, 0x3E, 0x9D, 0x50, 0x0C, 0x17, 0x04,
0x04, 0x17, 0x12, 0x8E, 0x68, 0x18, 0x17, 0x87, 0x12, 0xBB, 0x20, 0x17,
0x83, 0x04, 0x9D, 0x50, 0x15, 0x17, 0x05, 0x8D, 0x76, 0x17, 0x0F, 0x8B,
0x49, 0x17, 0x0B, 0x18, 0x32, 0x00, 0x2F, 0x00, 0x32, 0x00, 0x31, 0x00,
0x34, 0x00, 0x36, 0x00, 0x2F, 0x00, 0x33, 0x17, 0x09, 0x84, 0x0C, 0x17,
0x18, 0x18, 0x17, 0x20, 0x8E, 0x68, 0x15, 0x17, 0x07, 0x5A, 0x17, 0x06,
0x5E, 0x16, 0x00, 0x15, 0x17, 0x82, 0x40, 0x9D, 0x50, 0x17, 0x86, 0x5F,
0xBB, 0x20, 0x3A, 0x00, 0x00, 0x00, 0x1D, 0x17, 0x81, 0x4F, 0xAC, 0x38,
0x3B, 0x17, 0x04, 0x04, 0x17, 0x86, 0x30, 0x8E, 0x68, 0x17, 0x81, 0x53,
0xAC, 0x38, 0x07, 0x17, 0x0D, 0x8E, 0x68, 0xA3, 0x72, 0x17, 0x83, 0x10,
0x8E, 0x68
};