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https://github.com/tillitis/tillitis-key1.git
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6ef6c36f6f
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>
51 lines
1.2 KiB
C
51 lines
1.2 KiB
C
// Copyright (C) 2024 - Tillitis AB
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// SPDX-License-Identifier: GPL-2.0-only
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#include <stdint.h>
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#include <tkey/lib.h>
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#include "flash.h"
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#include "partition_table.h"
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#include "proto.h"
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int part_table_read(struct partition_table *part_table)
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{
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// Read from flash, if it exists, otherwise create a new one.
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flash_release_powerdown();
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memset(part_table, 0x00, sizeof(*part_table));
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flash_read_data(ADDR_PARTITION_TABLE, (uint8_t *)part_table,
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sizeof(*part_table));
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// TODO: Implement redundancy and consistency check
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if (part_table->header.version != PART_TABLE_VERSION) {
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// Partition table is not ours. Make a new one, and store it.
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memset(part_table, 0x00, sizeof(*part_table));
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part_table->header.version = PART_TABLE_VERSION;
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for (int i = 0; i < 4; i++) {
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part_table->app_storage[i].addr_start =
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(ADDR_STORAGE_AREA + i * SIZE_STORAGE_AREA);
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part_table->app_storage[i].size = SIZE_STORAGE_AREA;
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}
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part_table_write(part_table);
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}
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// Now the partition table is synced between flash and RAM.
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return 0;
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}
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int part_table_write(struct partition_table *part_table)
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{
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flash_sector_erase(ADDR_PARTITION_TABLE);
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flash_write_data(ADDR_PARTITION_TABLE, (uint8_t *)part_table,
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sizeof(*part_table));
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return 0;
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}
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