mirror of
https://github.com/tillitis/tillitis-key1.git
synced 2025-04-27 18:36:23 -04:00
8da9eef5d0
Adds syscalls: - ALLOCATE_AREA - DEALLOCATE_AREA - WRITE_DATA - READ_DATA and code to access the filesystem and the flash over SPI. Based on original work by Daniel Jobson <jobson@tillitis.see> for these files: - auth_app.[ch] - flash.[ch] - spi.[ch] - partition_table.[ch] - rng.[ch] - storage.[ch] which are used with small changes to integrate with the new syscall method. Co-authored-by: Daniel Jobson <jobson@tillitis.se> Co-authored-by: Mikael Ågren <mikael@tillitis.se>
75 lines
1.7 KiB
C
75 lines
1.7 KiB
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 <stdint.h>
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#include <tkey/assert.h>
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#include <tkey/debug.h>
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#include <tkey/led.h>
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#include "partition_table.h"
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#include "storage.h"
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#include "../tk1/syscall_num.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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static volatile uint32_t *udi = (volatile uint32_t *)TK1_MMIO_TK1_UDI_FIRST;
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// clang-format on
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extern struct partition_table part_table;
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int32_t syscall_handler(uint32_t number, uint32_t arg1, uint32_t arg2,
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uint32_t arg3)
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{
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switch (number) {
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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_ALLOC_AREA:
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if (storage_allocate_area(&part_table) < 0) {
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debug_puts("couldn't allocate storage area\n");
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return -1;
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}
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return 0;
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case TK1_SYSCALL_DEALLOC_AREA:
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if (storage_deallocate_area(&part_table) < 0) {
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debug_puts("couldn't deallocate storage area\n");
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return -1;
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}
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return 0;
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case TK1_SYSCALL_WRITE_DATA:
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if (storage_write_data(&part_table, arg1, (uint8_t *)arg2,
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arg3) < 0) {
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debug_puts("couldn't write storage area\n");
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return -1;
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}
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return 0;
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case TK1_SYSCALL_READ_DATA:
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if (storage_read_data(&part_table, arg1, (uint8_t *)arg2,
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arg3) < 0) {
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debug_puts("couldn't read storage area\n");
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return -1;
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}
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return 0;
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case TK1_SYSCALL_SET_LED:
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led_set(arg1);
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return 0;
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case TK1_SYSCALL_GET_VIDPID:
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// UDI is 2 words: VID/PID & serial. Return just the
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// first word. Serial is kept secret to the device
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// app.
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return udi[0];
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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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