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Atmosphere/fusee/fusee-secondary/src/panic.c

98 lines
3.3 KiB
C

/*
* Copyright (c) 2018-2020 Atmosphère-NX
*
* 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 "panic.h"
#include "di.h"
#include "pmc.h"
#include "fuse.h"
#include "utils.h"
static uint32_t g_panic_code = 0;
void check_and_display_panic(void) {
/* We also handle our own panics. */
bool has_panic = ((APBDEV_PMC_RST_STATUS_0 != 0) || (g_panic_code != 0));
uint32_t code = (g_panic_code == 0) ? APBDEV_PMC_SCRATCH200_0 : g_panic_code;
has_panic = has_panic && !((APBDEV_PMC_RST_STATUS_0 != 1) && (code == PANIC_CODE_SAFEMODE));
if (has_panic) {
uint32_t color;
/* Check for predefined codes: */
switch (code & MASK(20)) {
case 0x01: /* Package2 signature verification failed. */
case 0x02: /* Package2 meta verification failed. */
case 0x03: /* Package2 version check failed. */
case 0x04: /* Package2 payload verification failed. */
color = PANIC_COLOR_KERNEL;
break;
case 0x05: /* Unknown SMC. */
case 0x06: /* Unknown Abort. */
color = PANIC_COLOR_SECMON_GENERIC;
break;
case 0x07: /* Invalid CPU context. */
case 0x08: /* Invalid SE state. */
case 0x09: /* CPU is already awake (2.0.0+). */
color = PANIC_COLOR_SECMON_DEEPSLEEP;
break;
case 0x10: /* Unknown exception. */
color = PANIC_COLOR_SECMON_EXCEPTION;
break;
case 0x30: /* General bootloader error. */
case 0x31: /* Invalid DRAM ID. */
case 0x32: /* Invalid size. */
case 0x33: /* Invalid arguement. */
case 0x34: /* Bad GPT. */
case 0x35: /* Failed to boot SafeMode. */
case 0x36: /* Activity monitor fired (4.0.0+). */
color = PANIC_COLOR_BOOTLOADER_GENERIC;
break;
case 0x40: /* Kernel panic. */
color = PANIC_COLOR_KERNEL;
break;
default:
color = code >> 20;
color |= color << 4;
break;
}
/* Initialize the display. */
display_init();
/* Fill the screen. */
display_color_screen(color);
/* Wait for button and reboot. */
wait_for_button_and_reboot();
} else {
g_panic_code = 0;
APBDEV_PMC_SCRATCH200_0 = 0;
}
}
__attribute__ ((noreturn)) void panic(uint32_t code) {
/* Set panic code. */
if (g_panic_code == 0) {
g_panic_code = code;
APBDEV_PMC_SCRATCH200_0 = code;
}
fuse_disable_programming();
APBDEV_PMC_CRYPTO_OP_0 = 1; /* Disable all SE operations. */
check_and_display_panic();
while(true);
}