mirror of
https://github.com/tillitis/tillitis-key1.git
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42 lines
934 B
C
42 lines
934 B
C
/*
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* Copyright (C) 2025 - Tillitis AB
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* SPDX-License-Identifier: GPL-2.0-only
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*/
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#include "../tk1/assert.h"
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#include "../tk1/flash.h"
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#include "../tk1/led.h"
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#include "../tk1/syscall_nrs.h"
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#include "../tk1/types.h"
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// clang-format off
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static volatile uint32_t *system_reset = (volatile uint32_t *)TK1_MMIO_TK1_SYSTEM_RESET;
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// clang-format on
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// Proof-of-concept firmware for handling syscalls.
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// This is NOT a best-practice example of secure syscall implementation.
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int32_t syscall_handler(uint32_t syscall_nr, uint32_t arg1)
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{
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switch (syscall_nr) {
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case TK1_SYSCALL_RESET:
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*system_reset = 1;
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return 0;
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case TK1_SYSCALL_SET_LED:
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set_led(arg1);
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return 0;
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case TK1_SYSCALL_GET_FLASH_CAPACITY: {
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uint8_t jedec_id[3];
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flash_release_powerdown();
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flash_read_jedec_id(jedec_id);
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flash_powerdown();
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return jedec_id[2];
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}
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default:
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assert(1 == 2);
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}
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assert(1 == 2);
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return -1; // This should never run
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}
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