140 lines
3.8 KiB
C
140 lines
3.8 KiB
C
/*
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* Copyright (c) 2019 CTCaer
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <string.h>
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#include "sept.h"
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#include "../gfx/di.h"
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#include "../libs/fatfs/ff.h"
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#include "../mem/heap.h"
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#include "../soc/pmc.h"
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#include "../soc/t210.h"
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#include "../storage/nx_emmc.h"
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#include "../storage/sdmmc.h"
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#include "../utils/btn.h"
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#include "../utils/types.h"
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#include "../gfx/gfx.h"
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extern gfx_con_t gfx_con;
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#define EPRINTF(text) gfx_printf(&gfx_con, "%k"text"%k\n", 0xFFFF0000, 0xFFCCCCCC)
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#define EPRINTFARGS(text, args...) gfx_printf(&gfx_con, "%k"text"%k\n", 0xFFFF0000, args, 0xFFCCCCCC)
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#define PATCHED_RELOC_SZ 0x94
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#define WB_RST_ADDR 0x40010ED0
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#define WB_RST_SIZE 0x30
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u8 warmboot_reboot[] = {
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0x14, 0x00, 0x9F, 0xE5, // LDR R0, =0x7000E450
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0x01, 0x10, 0xB0, 0xE3, // MOVS R1, #1
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0x00, 0x10, 0x80, 0xE5, // STR R1, [R0]
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0x0C, 0x00, 0x9F, 0xE5, // LDR R0, =0x7000E400
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0x10, 0x10, 0xB0, 0xE3, // MOVS R1, #0x10
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0x00, 0x10, 0x80, 0xE5, // STR R1, [R0]
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0xFE, 0xFF, 0xFF, 0xEA, // LOOP
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0x50, 0xE4, 0x00, 0x70, // #0x7000E450
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0x00, 0xE4, 0x00, 0x70 // #0x7000E400
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};
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#define SEPT_PRI_ADDR 0x4003F000
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#define SEPT_PK1T_ADDR 0xC0400000
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#define SEPT_PK1T_STACK 0x40008000
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#define SEPT_TCSZ_ADDR (SEPT_PK1T_ADDR - 0x4)
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#define SEPT_STG1_ADDR (SEPT_PK1T_ADDR + 0x2E100)
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#define SEPT_STG2_ADDR (SEPT_PK1T_ADDR + 0x60E0)
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#define SEPT_PKG_SZ (0x2F100 + WB_RST_SIZE)
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extern boot_cfg_t *b_cfg;
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extern void sd_unmount();
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extern void reloc_patcher(u32 payload_dst, u32 payload_src, u32 payload_size);
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int reboot_to_sept(const u8 *tsec_fw)
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{
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FIL fp;
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// Copy warmboot reboot code and TSEC fw.
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memcpy((u8 *)(SEPT_PK1T_ADDR - WB_RST_SIZE), (u8 *)warmboot_reboot, sizeof(warmboot_reboot));
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memcpy((void *)SEPT_PK1T_ADDR, tsec_fw, 0x3000);
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*(vu32 *)SEPT_TCSZ_ADDR = 0x3000;
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// Copy sept-primary.
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if (f_open(&fp, "sd:/sept/sept-primary.bin", FA_READ))
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goto error;
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if (f_read(&fp, (u8 *)SEPT_STG1_ADDR, f_size(&fp), NULL))
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{
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f_close(&fp);
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goto error;
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}
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f_close(&fp);
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// Copy sept-secondary.
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if (f_open(&fp, "sd:/sept/sept-secondary.enc", FA_READ))
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goto error;
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if (f_read(&fp, (u8 *)SEPT_STG2_ADDR, f_size(&fp), NULL))
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{
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f_close(&fp);
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goto error;
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}
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f_close(&fp);
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// Save auto boot config to payload, if any.
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boot_cfg_t *tmp_cfg = malloc(sizeof(boot_cfg_t));
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memcpy(tmp_cfg, b_cfg, sizeof(boot_cfg_t));
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tmp_cfg->boot_cfg |= BOOT_CFG_SEPT_RUN;
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if (f_open(&fp, "sd:/sept/payload.bin", FA_READ | FA_WRITE))
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goto error;
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f_lseek(&fp, PATCHED_RELOC_SZ);
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f_write(&fp, tmp_cfg, sizeof(boot_cfg_t), NULL);
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f_close(&fp);
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sd_unmount();
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gfx_printf(&gfx_con, "\n%kPress Power or Vol +/-\n%k to Reboot to Sept...", COLOR_BLUE, COLOR_VIOLET);
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btn_wait();
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u32 pk1t_sept = SEPT_PK1T_ADDR - (ALIGN(PATCHED_RELOC_SZ, 0x10) + WB_RST_SIZE);
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void (*sept)() = (void *)pk1t_sept;
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reloc_patcher(WB_RST_ADDR, pk1t_sept, SEPT_PKG_SZ);
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// Patch SDRAM init to perform an SVC immediately after second write.
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PMC(APBDEV_PMC_SCRATCH45) = 0x2E38DFFF;
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PMC(APBDEV_PMC_SCRATCH46) = 0x6001DC28;
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// Set SVC handler to jump to sept-primary in IRAM.
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PMC(APBDEV_PMC_SCRATCH33) = SEPT_PRI_ADDR;
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PMC(APBDEV_PMC_SCRATCH40) = 0x6000F208;
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display_end();
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(*sept)();
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return 1;
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error:
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EPRINTF("Sept payloads not found in sd:/sept!\nPlace appropriate files and try again.");
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display_backlight_brightness(100, 1000);
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btn_wait();
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return 0;
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} |