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exo: add stub warmboot.bin

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This commit is contained in:
Michael Scire
2018-12-17 12:01:10 -08:00
parent dca51291aa
commit fc4912ef54
9 changed files with 453 additions and 0 deletions
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41
exosphere/lp0fw/src/lp0.c Normal file
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/*
* Copyright (c) 2018 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 "utils.h"
#include "lp0.h"
#include "pmc.h"
#include "timer.h"
void reboot(void) {
/* Write MAIN_RST */
APBDEV_PMC_CNTRL_0 = 0x10;
while (true) {
/* Wait for reboot. */
}
}
void lp0_entry_main(warmboot_metadata_t *meta) {
/* Before doing anything else, ensure some sanity. */
if (meta->magic != WARMBOOT_MAGIC || meta->tz_relative_offset > 0x2000) {
reboot();
}
/* TODO: stuff */
while (true) { /* TODO: Halt BPMP */ }
}

35
exosphere/lp0fw/src/lp0.h Normal file
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/*
* Copyright (c) 2018 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/>.
*/
#ifndef EXOSPHERE_WARMBOOT_BIN_LP0_H
#define EXOSPHERE_WARMBOOT_BIN_LP0_H
#include "utils.h"
/* WBT0 */
#define WARMBOOT_MAGIC 0x30544257
typedef struct {
uint32_t magic;
uint32_t tz_relative_offset;
uint32_t padding[2];
} warmboot_metadata_t;
void lp0_entry_main(warmboot_metadata_t *meta);
void reboot(void);
#endif

53
exosphere/lp0fw/src/pmc.h Normal file
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/*
* Copyright (c) 2018 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/>.
*/
#ifndef EXOSPHERE_WARMBOOT_BIN_PMC_H
#define EXOSPHERE_WARMBOOT_BIN_PMC_H
#include "utils.h"
#define PMC_BASE (0x7000E400)
#define MAKE_PMC_REG(ofs) (MAKE_REG32(PMC_BASE + ofs))
#define APBDEV_PMC_CNTRL_0 MAKE_PMC_REG(0x000)
#define APBDEV_PMC_DPD_SAMPLE_0 MAKE_PMC_REG(0x020)
#define APBDEV_PMC_DPD_ENABLE_0 MAKE_PMC_REG(0x024)
#define APBDEV_PMC_CLAMP_STATUS_0 MAKE_PMC_REG(0x02C)
#define APBDEV_PMC_PWRGATE_STATUS_0 MAKE_PMC_REG(0x038)
#define APBDEV_PMC_SCRATCH12_0 MAKE_PMC_REG(0x080)
#define APBDEV_PMC_SCRATCH13_0 MAKE_PMC_REG(0x084)
#define APBDEV_PMC_SCRATCH18_0 MAKE_PMC_REG(0x098)
#define APBDEV_PMC_WEAK_BIAS_0 MAKE_PMC_REG(0x2C8)
#define APBDEV_PMC_IO_DPD3_REQ_0 MAKE_PMC_REG(0x45C)
#define APBDEV_PMC_IO_DPD3_STATUS_0 MAKE_PMC_REG(0x460)
#define APBDEV_PMC_IO_DPD4_REQ_0 MAKE_PMC_REG(0x464)
#define APBDEV_PMC_IO_DPD4_STATUS_0 MAKE_PMC_REG(0x468)
#define APBDEV_PMC_SET_SW_CLAMP_0 MAKE_PMC_REG(0x47C)
#define APBDEV_PMC_DDR_CNTRL_0 MAKE_PMC_REG(0x4E4)
#endif

68
exosphere/lp0fw/src/start.s Normal file
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/*
* Copyright (c) 2018 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/>.
*/
.section .text.start
/* Warmboot header. */
/* Binary size */
.word __total_size__
.rept 3
.word 0x00000000
.endr
/* RSA modulus */
.rept 0x40
.word 0xFFFFFFFF
.endr
/* Padding */
.rept 4
.word 0x00000000
.endr
/* RSA signature */
.rept 0x40
.word 0xFFFFFFFF
.endr
/* Padding */
.rept 4
.word 0x00000000
.endr
/* Relocation meta */
.word __total_size__
.word _start
.word _start
.word __executable_size__
.global _start
_start:
b crt0
.rept 0x7C
.word 0x00000000 /* Padding */
.endr
.global _metadata
_metadata:
.ascii "WBT0" /* Magic number */
.word 0x00000000 /* TrustZone relative base. */
.word 0x00000000 /* Reserved */
.word 0x00000000 /* Reserved */
.global crt0
.type crt0, %function
crt0:
@ setup to call lp0_entry_main
ldr sp, =__stack_top__
ldr lr, =reboot
ldr r0, =_metadata
b lp0_entry_main

33
exosphere/lp0fw/src/timer.h Normal file
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/*
* Copyright (c) 2018 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/>.
*/
#ifndef EXOSPHERE_WARMBOOT_BIN_TIMER_H
#define EXOSPHERE_WARMBOOT_BIN_TIMER_H
#include "utils.h"
#define TIMERUS_CNTR_1US_0 MAKE_REG32(0x60005010)
static inline void timer_wait(uint32_t microseconds) {
uint32_t old_time = TIMERUS_CNTR_1US_0;
while (TIMERUS_CNTR_1US_0 - old_time <= microseconds) {
/* Spin-lock. */
}
}
void spinlock_wait(uint32_t count);
#endif

38
exosphere/lp0fw/src/utils.h Normal file
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/*
* Copyright (c) 2018 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/>.
*/
#ifndef EXOSPHERE_WARMBOOT_BIN_UTILS_H
#define EXOSPHERE_WARMBOOT_BIN_UTILS_H
#include <stdbool.h>
#include <stddef.h>
#include <stdint.h>
#define BIT(n) (1u << (n))
#define BITL(n) (1ull << (n))
#define MASK(n) (BIT(n) - 1)
#define MASKL(n) (BITL(n) - 1)
#define MASK2(a,b) (MASK(a) & ~MASK(b))
#define MASK2L(a,b) (MASKL(a) & ~MASKL(b))
#define MAKE_REG32(a) (*(volatile uint32_t *)(a))
#define ALIGN(m) __attribute__((aligned(m)))
#define PACKED __attribute__((packed))
#define ALINLINE __attribute__((always_inline))
#endif