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Add filesystem code and storage syscalls

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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>
This commit is contained in:
Michael Cardell Widerkrantz 2025-03-12 16:17:48 +01:00 • committed by Mikael Ågren
parent e86e60fcfe
commit 8da9eef5d0
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GPG key ID: E02DA3D397792C46
19 changed files with 974 additions and 7 deletions
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105
hw/application_fpga/fw/tk1/partition_table.h Normal file
View file

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// Copyright (C) 2024 - Tillitis AB
// SPDX-License-Identifier: GPL-2.0-only
#ifndef PARTITION_TABLE_H
#define PARTITION_TABLE_H
#include <stdint.h>
/* ---- Flash ---- ---- */
/* name size start addr */
/* ---- ---- ---- */
/* bitstream 128KiB 0x00 */
/* ---- ---- ---- */
/* Partition 64KiB 0x20000 */
/* ---- ---- ---- */
/* Pre load 128KiB 0x30000 */
/* ---- ---- ---- */
/* storage 1 128KiB 0x50000 */
/* storage 2 128KiB 0x70000 */
/* storage 3 128KiB 0x90000 */
/* storage 4 128KiB 0xB0000 */
/* ---- ---- ---- */
/* To simplify all blocks are aligned with the 64KiB blocks on the W25Q80DL
* flash. */
#define PART_TABLE_VERSION 1
#define ADDR_BITSTREAM 0UL
#define SIZE_BITSTREAM 0x20000UL // 128KiB
#define ADDR_PARTITION_TABLE (ADDR_BITSTREAM + SIZE_BITSTREAM)
#define SIZE_PARTITION_TABLE \
0x10000UL // 64KiB, 60 KiB reserved, 2 flash pages (2 x 4KiB) for the
// partition table
#define ADDR_PRE_LOADED_APP (ADDR_PARTITION_TABLE + SIZE_PARTITION_TABLE)
#define SIZE_PRE_LOADED_APP 0x20000UL // 128KiB
#define ADDR_STORAGE_AREA (ADDR_PRE_LOADED_APP + SIZE_PRE_LOADED_APP)
#define SIZE_STORAGE_AREA 0x20000UL // 128KiB
#define N_STORAGE_AREA 4
#define EMPTY_AREA
/* Partition Table */
/*- Table header */
/* - 1 bytes Version */
/**/
/*- Management device app */
/* - Status. */
/* - 16 byte random nonce. */
/* - 16 byte authentication digest. */
/**/
/*- Pre-loaded device app */
/* - 1 byte status. */
/* - 4 bytes length. */
/* - 16 bytes random nonce. */
/* - 16 bytes authentication digest. */
/**/
/*- Device app storage area */
/* - 1 byte status. */
/* - 16 bytes random nonce. */
/* - 16 bytes authentication tag. */
/* - 4 bytes physical start address. */
/* - 4 bytes physical end address. */
struct auth_metadata {
uint8_t nonce[16];
uint8_t authentication_digest[16];
} __attribute__((packed));
struct management_app_metadata {
uint8_t status;
struct auth_metadata auth;
} __attribute__((packed));
struct pre_loaded_app_metadata {
uint8_t status;
uint32_t size;
struct auth_metadata auth;
} __attribute__((packed));
struct app_storage_area {
uint8_t status;
struct auth_metadata auth;
uint32_t addr_start;
uint32_t size;
} __attribute__((packed));
struct table_header {
uint8_t version;
} __attribute__((packed));
struct partition_table {
struct table_header header;
struct management_app_metadata mgmt_app_data;
struct pre_loaded_app_metadata pre_app_data;
struct app_storage_area app_storage[N_STORAGE_AREA];
} __attribute__((packed));
int part_table_read(struct partition_table *part_table);
int part_table_write(struct partition_table *part_table);
#endif