Picklock_RCM/source/hos/sept.c

185 lines
4.7 KiB
C

/*
* Copyright (c) 2019 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,
* 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 "hos.h"
#include "fss.h"
#include "sept.h"
#include "../config.h"
#include <utils/ini.h>
#include <gfx/di.h>
#include <libs/fatfs/ff.h>
#include <mem/heap.h>
#include <soc/hw_init.h>
#include <soc/pmc.h>
#include <soc/t210.h>
#include "../storage/nx_emmc.h"
#include <storage/nx_sd.h>
#include <storage/sdmmc.h>
#include <utils/btn.h>
#include <utils/list.h>
#include <utils/types.h>
#include <gfx_utils.h>
#define PATCHED_RELOC_SZ 0x94
#define WB_RST_ADDR 0x40010ED0
#define WB_RST_SIZE 0x30
u8 warmboot_reboot[] = {
0x14, 0x00, 0x9F, 0xE5, // LDR R0, =0x7000E450
0x01, 0x10, 0xB0, 0xE3, // MOVS R1, #1
0x00, 0x10, 0x80, 0xE5, // STR R1, [R0]
0x0C, 0x00, 0x9F, 0xE5, // LDR R0, =0x7000E400
0x10, 0x10, 0xB0, 0xE3, // MOVS R1, #0x10
0x00, 0x10, 0x80, 0xE5, // STR R1, [R0]
0xFE, 0xFF, 0xFF, 0xEA, // LOOP
0x50, 0xE4, 0x00, 0x70, // #0x7000E450
0x00, 0xE4, 0x00, 0x70 // #0x7000E400
};
#define SEPT_PRI_ADDR 0x4003F000
#define SEPT_PK1T_ADDR 0xC0400000
#define SEPT_PK1T_STACK 0x40008000
#define SEPT_TCSZ_ADDR (SEPT_PK1T_ADDR - 0x4)
#define SEPT_STG1_ADDR (SEPT_PK1T_ADDR + 0x2E100)
#define SEPT_STG2_ADDR (SEPT_PK1T_ADDR + 0x60E0)
#define SEPT_PKG_SZ (0x2F100 + WB_RST_SIZE)
extern u32 color_idx;
extern boot_cfg_t b_cfg;
extern void reloc_patcher(u32 payload_dst, u32 payload_src, u32 payload_size);
int reboot_to_sept(const u8 *tsec_fw, const u32 tsec_size, const u32 kb)
{
FIL fp;
bool fss0_sept_used = false;
// Copy warmboot reboot code and TSEC fw.
memcpy((u8 *)(SEPT_PK1T_ADDR - WB_RST_SIZE), (u8 *)warmboot_reboot, sizeof(warmboot_reboot));
memcpy((void *)SEPT_PK1T_ADDR, tsec_fw, tsec_size);
*(vu32 *)SEPT_TCSZ_ADDR = tsec_size;
LIST_INIT(ini_sections);
if (ini_parse(&ini_sections, "bootloader/hekate_ipl.ini", false))
{
bool found = false;
LIST_FOREACH_ENTRY(ini_sec_t, ini_sec, &ini_sections, link)
{
// Only parse non config sections.
if (ini_sec->type == INI_CHOICE && strcmp(ini_sec->name, "config"))
{
LIST_FOREACH_ENTRY(ini_kv_t, kv, &ini_sec->kvs, link)
{
if (!strcmp("fss0", kv->key))
{
fss0_sept_t sept_ctxt;
sept_ctxt.kb = kb;
sept_ctxt.sept_primary = (void *)SEPT_STG1_ADDR;
sept_ctxt.sept_secondary = (void *)SEPT_STG2_ADDR;
fss0_sept_used = parse_fss(NULL, kv->val, &sept_ctxt);
found = true;
break;
}
}
}
if (found)
break;
}
}
if (!fss0_sept_used)
{
// Copy sept-primary.
if (f_open(&fp, "sd:/sept/sept-primary.bin", FA_READ))
goto error;
if (f_read(&fp, (u8 *)SEPT_STG1_ADDR, f_size(&fp), NULL))
{
f_close(&fp);
goto error;
}
f_close(&fp);
// Copy sept-secondary.
if (kb < KB_FIRMWARE_VERSION_810)
{
if (f_open(&fp, "sd:/sept/sept-secondary_00.enc", FA_READ))
if (f_open(&fp, "sd:/sept/sept-secondary.enc", FA_READ)) // Try the deprecated version.
goto error;
}
else
{
if (f_open(&fp, "sd:/sept/sept-secondary_01.enc", FA_READ))
goto error;
}
if (f_read(&fp, (u8 *)SEPT_STG2_ADDR, f_size(&fp), NULL))
{
f_close(&fp);
goto error;
}
f_close(&fp);
}
// Save auto boot config to sept payload, if any.
boot_cfg_t *tmp_cfg = malloc(sizeof(boot_cfg_t));
memcpy(tmp_cfg, &b_cfg, sizeof(boot_cfg_t));
tmp_cfg->boot_cfg |= BOOT_CFG_SEPT_RUN;
if (f_open(&fp, "sd:/sept/payload.bin", FA_READ | FA_WRITE))
{
free(tmp_cfg);
goto error;
}
f_lseek(&fp, PATCHED_RELOC_SZ);
f_write(&fp, tmp_cfg, sizeof(boot_cfg_t), NULL);
f_close(&fp);
sd_unmount();
u32 pk1t_sept = SEPT_PK1T_ADDR - (ALIGN(PATCHED_RELOC_SZ, 0x10) + WB_RST_SIZE);
void (*sept)() = (void *)pk1t_sept;
reloc_patcher(WB_RST_ADDR, pk1t_sept, SEPT_PKG_SZ);
// Patch SDRAM init to perform an SVC immediately after second write.
PMC(APBDEV_PMC_SCRATCH45) = 0x2E38DFFF;
PMC(APBDEV_PMC_SCRATCH46) = 0x6001DC28;
// Set SVC handler to jump to sept-primary in IRAM.
PMC(APBDEV_PMC_SCRATCH33) = SEPT_PRI_ADDR;
PMC(APBDEV_PMC_SCRATCH40) = 0x6000F208;
hw_reinit_workaround(false, 0);
(*sept)();
error:
EPRINTF("\nSept files not found in sd:/sept!\nPlace appropriate files and try again.");
display_backlight_brightness(100, 1000);
btn_wait();
return 0;
}