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

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/*
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* Copyright (c) 2018-2019 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 <stdbool.h>
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#include <stdarg.h>
#include "utils.h"
#include "se.h"
#include "fuse.h"
#include "pmc.h"
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#include "car.h"
#include "timers.h"
#include "btn.h"
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#include "panic.h"
#include "lib/log.h"
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#include <stdio.h>
#include <inttypes.h>
#define u8 uint8_t
#define u32 uint32_t
#include "fusee_primary_bin.h"
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#include "sept_primary_bin.h"
#include "rebootstub_bin.h"
#undef u8
#undef u32
void wait(uint32_t microseconds) {
uint32_t old_time = TIMERUS_CNTR_1US_0;
while (TIMERUS_CNTR_1US_0 - old_time <= microseconds) {
/* Spin-lock. */
}
}
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__attribute__((noreturn)) void watchdog_reboot(void) {
volatile watchdog_timers_t *wdt = GET_WDT(4);
wdt->PATTERN = WDT_REBOOT_PATTERN;
wdt->COMMAND = 2; /* Disable Counter. */
GET_WDT_REBOOT_CFG_REG(4) = 0xC0000000;
wdt->CONFIG = 0x8019; /* Full System Reset after Fourth Counter expires, using TIMER(9). */
wdt->COMMAND = 1; /* Enable Counter. */
while (true) {
/* Wait for reboot. */
}
}
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__attribute__((noreturn)) void pmc_reboot(uint32_t scratch0) {
APBDEV_PMC_SCRATCH0_0 = scratch0;
/* Reset the processor. */
APBDEV_PMC_CONTROL = BIT(4);
while (true) {
/* Wait for reboot. */
}
}
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__attribute__((noreturn)) static void reboot_to_payload(void) {
/* Patch SDRAM init to perform an SVC immediately after second write */
APBDEV_PMC_SCRATCH45_0 = 0x2E38DFFF;
APBDEV_PMC_SCRATCH46_0 = 0x6001DC28;
/* Set SVC handler to jump to reboot stub in IRAM. */
APBDEV_PMC_SCRATCH33_0 = 0x4003F000;
APBDEV_PMC_SCRATCH40_0 = 0x6000F208;
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/* Copy reboot stub into IRAM high. */
for (size_t i = 0; i < rebootstub_bin_size; i += sizeof(uint32_t)) {
write32le((void *)0x4003F000, i, read32le(rebootstub_bin, i));
}
/* Trigger warm reboot. */
pmc_reboot(1 << 0);
while (true) { }
}
__attribute__((noreturn)) void reboot_to_fusee_primary(void) {
/* Copy fusee-primary into IRAM low. */
for (size_t i = 0; i < fusee_primary_bin_size; i += sizeof(uint32_t)) {
write32le((void *)0x40010000, i, read32le(fusee_primary_bin, i));
}
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reboot_to_payload();
}
__attribute__((noreturn)) void reboot_to_sept(const void *tsec_fw, size_t tsec_fw_length, const void *stage2, size_t stage2_size) {
/* Copy tsec firmware. */
for (size_t i = 0; i < tsec_fw_length; i += sizeof(uint32_t)) {
write32le((void *)0x40010F00, i, read32le(tsec_fw, i));
}
MAKE_REG32(0x40010EFC) = tsec_fw_length;
/* Copy stage 2. */
for (size_t i = 0; i < stage2_size; i += sizeof(uint32_t)) {
write32le((void *)0x40016FE0, i, read32le(stage2, i));
}
/* Copy sept into IRAM low. */
for (size_t i = 0; i < sept_primary_bin_size; i += sizeof(uint32_t)) {
write32le((void *)0x4003F000, i, read32le(sept_primary_bin, i));
}
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/* Patch SDRAM init to perform an SVC immediately after second write */
APBDEV_PMC_SCRATCH45_0 = 0x2E38DFFF;
APBDEV_PMC_SCRATCH46_0 = 0x6001DC28;
/* Set SVC handler to jump to reboot stub in IRAM. */
APBDEV_PMC_SCRATCH33_0 = 0x4003F000;
APBDEV_PMC_SCRATCH40_0 = 0x6000F208;
/* Trigger warm reboot. */
pmc_reboot(1 << 0);
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while (true) { }
}
__attribute__((noreturn)) void reboot_to_iram_payload(void *payload, size_t payload_size) {
/* Copy sept into IRAM low. */
for (size_t i = 0; i < payload_size; i += sizeof(uint32_t)) {
write32le((void *)0x40010000, i, read32le(payload, i));
}
reboot_to_payload();
}
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__attribute__((noreturn)) void wait_for_button_and_reboot(void) {
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uint32_t button;
while (true) {
button = btn_read();
if (button & BTN_POWER) {
reboot_to_fusee_primary();
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}
}
}
void wait_for_button(void) {
uint32_t button;
while (true) {
button = btn_read();
if (button) {
return;
}
}
}
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__attribute__ ((noreturn)) void generic_panic(void) {
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panic(0xFF000006);
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}
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__attribute__((noreturn)) void fatal_error(const char *fmt, ...) {
va_list args;
print(SCREEN_LOG_LEVEL_ERROR, "Fatal error: ");
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va_start(args, fmt);
vprint(SCREEN_LOG_LEVEL_ERROR, fmt, args);
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va_end(args);
print(SCREEN_LOG_LEVEL_ERROR | SCREEN_LOG_LEVEL_NO_PREFIX, "\n Press POWER to reboot.\n");
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wait_for_button_and_reboot();
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}
__attribute__((noinline)) bool overlaps(uint64_t as, uint64_t ae, uint64_t bs, uint64_t be)
{
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if(as <= bs && bs < ae)
return true;
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if(bs <= as && as < be)
return true;
return false;
}
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/* Adapted from https://gist.github.com/ccbrown/9722406 */
void hexdump(const void* data, size_t size, uintptr_t addrbase) {
const uint8_t *d = (const uint8_t *)data;
char ascii[17];
ascii[16] = '\0';
for (size_t i = 0; i < size; i++) {
if (i % 16 == 0) {
printf("%0*" PRIXPTR ": | ", 2 * sizeof(addrbase), addrbase + i);
}
printf("%02X ", d[i]);
if (d[i] >= ' ' && d[i] <= '~') {
ascii[i % 16] = d[i];
} else {
ascii[i % 16] = '.';
}
if ((i+1) % 8 == 0 || i+1 == size) {
printf(" ");
if ((i+1) % 16 == 0) {
printf("| %s \n", ascii);
} else if (i+1 == size) {
ascii[(i+1) % 16] = '\0';
if ((i+1) % 16 <= 8) {
printf(" ");
}
for (size_t j = (i+1) % 16; j < 16; j++) {
printf(" ");
}
printf("| %s \n", ascii);
}
}
}
}