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TegraExplorer
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TegraExplorer/source/main.c

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/*
* Copyright (c) 2018 naehrwert
*
* Copyright (c) 2018-2020 CTCaer
* Copyright (c) 2019-2020 shchmue
*
* 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 "config.h"
#include <display/di.h>
#include <gfx_utils.h>
#include <libs/fatfs/ff.h>
#include <mem/heap.h>
#include <mem/minerva.h>
#include <power/bq24193.h>
#include <power/max17050.h>
#include <power/max77620.h>
#include <rtc/max77620-rtc.h>
#include <soc/bpmp.h>
#include <soc/hw_init.h>
#include "storage/emummc.h"
#include "storage/nx_emmc.h"
#include <storage/nx_sd.h>
#include <storage/sdmmc.h>
#include <utils/btn.h>
#include <utils/dirlist.h>
#include <utils/ini.h>
#include <utils/sprintf.h>
#include <utils/util.h>
#include "hid/hid.h"
#include <input/joycon.h>
#include "gfx/menu.h"
#include "utils/vector.h"
#include "gfx/gfxutils.h"
#include "tegraexplorer/mainmenu.h"
#include "tegraexplorer/tconf.h"
#include "err.h"
#include <soc/pmc.h>
#include "keys/keys.h"
#include "keys/keyfile.h"
#include "storage/mountmanager.h"
#include "fs/fsutils.h"
#include "fs/fstypes.h"
#include "fs/menus/filemenu.h"
hekate_config h_cfg;
boot_cfg_t __attribute__((section ("._boot_cfg"))) b_cfg;
volatile nyx_storage_t *nyx_str = (nyx_storage_t *)NYX_STORAGE_ADDR;
// This is a safe and unused DRAM region for our payloads.
#define RELOC_META_OFF 0x7C
#define PATCHED_RELOC_SZ 0x94
#define PATCHED_RELOC_STACK 0x40007000
#define PATCHED_RELOC_ENTRY 0x40010000
#define EXT_PAYLOAD_ADDR 0xC0000000
#define RCM_PAYLOAD_ADDR (EXT_PAYLOAD_ADDR + ALIGN(PATCHED_RELOC_SZ, 0x10))
#define COREBOOT_END_ADDR 0xD0000000
#define CBFS_DRAM_EN_ADDR 0x4003e000
#define CBFS_DRAM_MAGIC 0x4452414D // "DRAM"
static void *coreboot_addr;
void reloc_patcher(u32 payload_dst, u32 payload_src, u32 payload_size)
{
memcpy((u8 *)payload_src, (u8 *)IPL_LOAD_ADDR, PATCHED_RELOC_SZ);
volatile reloc_meta_t *relocator = (reloc_meta_t *)(payload_src + RELOC_META_OFF);
relocator->start = payload_dst - ALIGN(PATCHED_RELOC_SZ, 0x10);
relocator->stack = PATCHED_RELOC_STACK;
relocator->end = payload_dst + payload_size;
relocator->ep = payload_dst;
if (payload_size == 0x7000)
{
memcpy((u8 *)(payload_src + ALIGN(PATCHED_RELOC_SZ, 0x10)), coreboot_addr, 0x7000); //Bootblock
*(vu32 *)CBFS_DRAM_EN_ADDR = CBFS_DRAM_MAGIC;
}
}
int launch_payload(char *path)
{
gfx_clear_grey(0x1B);
gfx_con_setpos(0, 0);
if (!path)
return 1;
if (sd_mount())
{
FIL fp;
if (f_open(&fp, path, FA_READ))
{
EPRINTFARGS("Payload file is missing!\n(%s)", path);
sd_unmount();
return 1;
}
// Read and copy the payload to our chosen address
void *buf;
u32 size = f_size(&fp);
if (size < 0x30000)
buf = (void *)RCM_PAYLOAD_ADDR;
else
{
coreboot_addr = (void *)(COREBOOT_END_ADDR - size);
buf = coreboot_addr;
}
if (f_read(&fp, buf, size, NULL))
{
f_close(&fp);
sd_unmount();
return 1;
}
f_close(&fp);
sd_unmount();
if (size < 0x30000)
{
reloc_patcher(PATCHED_RELOC_ENTRY, EXT_PAYLOAD_ADDR, ALIGN(size, 0x10));
hw_reinit_workaround(false, byte_swap_32(*(u32 *)(buf + size - sizeof(u32))));
}
else
{
reloc_patcher(PATCHED_RELOC_ENTRY, EXT_PAYLOAD_ADDR, 0x7000);
hw_reinit_workaround(true, 0);
}
// Some cards (Sandisk U1), do not like a fast power cycle. Wait min 100ms.
sdmmc_storage_init_wait_sd();
void (*ext_payload_ptr)() = (void *)EXT_PAYLOAD_ADDR;
// Launch our payload.
(*ext_payload_ptr)();
}
return 1;
}
extern void pivot_stack(u32 stack_top);
#define EXCP_EN_ADDR 0x4003FFFC
#define EXCP_MAGIC 0x30505645 // EVP0
#define EXCP_TYPE_ADDR 0x4003FFF8
#define EXCP_TYPE_RESET 0x545352 // RST
#define EXCP_TYPE_UNDEF 0x464455 // UDF
#define EXCP_TYPE_PABRT 0x54424150 // PABT
#define EXCP_TYPE_DABRT 0x54424144 // DABT
#define EXCP_LR_ADDR 0x4003FFF4
static inline void _show_errors()
{
u32 *excp_enabled = (u32 *)EXCP_EN_ADDR;
u32 *excp_type = (u32 *)EXCP_TYPE_ADDR;
u32 *excp_lr = (u32 *)EXCP_LR_ADDR;
if (*excp_enabled == EXCP_MAGIC)
h_cfg.errors |= ERR_EXCEPTION;
if (h_cfg.errors)
{
/*
if (h_cfg.errors & ERR_SD_BOOT_EN)
WPRINTF("Failed to mount SD!\n");
if (h_cfg.errors & ERR_LIBSYS_LP0)
WPRINTF("Missing LP0 (sleep mode) lib!\n");
if (h_cfg.errors & ERR_LIBSYS_MTC)
WPRINTF("Missing or old Minerva lib!\n");
if (h_cfg.errors & (ERR_LIBSYS_LP0 | ERR_LIBSYS_MTC))
WPRINTF("\nUpdate bootloader folder!\n\n");
*/
if (h_cfg.errors & ERR_EXCEPTION)
{
gfx_clearscreen();
WPRINTFARGS("LR %08X", *excp_lr);
u32 exception = 0;
switch (*excp_type)
{
case EXCP_TYPE_RESET:
exception = TE_EXCEPTION_RESET;
break;
case EXCP_TYPE_UNDEF:
exception = TE_EXCEPTION_UNDEFINED;
break;
case EXCP_TYPE_PABRT:
exception = TE_EXCEPTION_PREF_ABORT;
break;
case EXCP_TYPE_DABRT:
exception = TE_EXCEPTION_DATA_ABORT;
break;
}
// Clear the exception.
*excp_enabled = 0;
DrawError(newErrCode(exception));
}
}
}
void ipl_main()
{
// Do initial HW configuration. This is compatible with consecutive reruns without a reset.
hw_init();
// Pivot the stack so we have enough space.
pivot_stack(IPL_STACK_TOP);
// Tegra/Horizon configuration goes to 0x80000000+, package2 goes to 0xA9800000, we place our heap in between.
heap_init(IPL_HEAP_START);
#ifdef DEBUG_UART_PORT
uart_send(DEBUG_UART_PORT, (u8 *)"hekate: Hello!\r\n", 16);
uart_wait_idle(DEBUG_UART_PORT, UART_TX_IDLE);
#endif
// Set bootloader's default configuration.
set_default_configuration();
// Mount SD Card.
h_cfg.errors |= !sd_mount() ? ERR_SD_BOOT_EN : 0;
TConf.minervaEnabled = !minerva_init();
TConf.FSBuffSize = (TConf.minervaEnabled) ? 0x800000 : 0x10000;
if (!TConf.minervaEnabled) //!TODO: Add Tegra210B01 support to minerva.
h_cfg.errors |= ERR_LIBSYS_MTC;
display_init();
u32 *fb = display_init_framebuffer_pitch();
gfx_init_ctxt(fb, 720, 1280, 720);
gfx_con_init();
display_backlight_pwm_init();
display_backlight_brightness(100, 1000);
// Overclock BPMP.
bpmp_clk_rate_set(BPMP_CLK_DEFAULT_BOOST);
minerva_change_freq(FREQ_800);
emummc_load_cfg();
// Ignore whether emummc is enabled.
h_cfg.emummc_force_disable = emu_cfg.sector == 0 && !emu_cfg.path;
emu_cfg.enabled = !h_cfg.emummc_force_disable;
h_cfg.emummc_force_disable = 1;
TConf.pkg1ID = "Unk";
hidInit();
_show_errors();
gfx_clearscreen();
int res = -1;
if (btn_read() & BTN_VOL_DOWN || DumpKeys())
res = GetKeysFromFile("sd:/switch/prod.keys");
TConf.keysDumped = (res > 0) ? 0 : 1;
if (res > 0)
DrawError(newErrCode(TE_ERR_KEYDUMP_FAIL));
if (TConf.keysDumped)
SetKeySlots();
if (res == 0)
hidWait();
if (FileExists("sd:/startup.te"))
RunScript("sd:/", newFSEntry("startup.te"));
EnterMainMenu();
// Halt BPMP if we managed to get out of execution.
while (true)
bpmp_halt();
}
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