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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 bd2df9bd3f
commit 20b008d20e
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GPG key ID: E02DA3D397792C46
19 changed files with 974 additions and 7 deletions
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39
hw/application_fpga/fw/tk1/syscall_handler.c
View file

@ -5,8 +5,12 @@
#include <stdint.h>
#include <tkey/assert.h>
#include <tkey/debug.h>
#include <tkey/led.h>
#include "partition_table.h"
#include "storage.h"
#include "../tk1/syscall_num.h"
// clang-format off
@ -14,11 +18,44 @@ static volatile uint32_t *system_reset = (volatile uint32_t *)TK1_MMIO_TK1_SYSTE
static volatile uint32_t *udi = (volatile uint32_t *)TK1_MMIO_TK1_UDI_FIRST;
// clang-format on
int32_t syscall_handler(uint32_t number, uint32_t arg1)
extern struct partition_table part_table;
int32_t syscall_handler(uint32_t number, uint32_t arg1, uint32_t arg2,
uint32_t arg3)
{
switch (number) {
case TK1_SYSCALL_RESET:
*system_reset = 1;
return 0;
case TK1_SYSCALL_ALLOC_AREA:
if (storage_allocate_area(&part_table) < 0) {
debug_puts("couldn't allocate storage area\n");
return -1;
}
return 0;
case TK1_SYSCALL_DEALLOC_AREA:
if (storage_deallocate_area(&part_table) < 0) {
debug_puts("couldn't deallocate storage area\n");
return -1;
}
return 0;
case TK1_SYSCALL_WRITE_DATA:
if (storage_write_data(&part_table, arg1, (uint8_t *)arg2,
arg3) < 0) {
debug_puts("couldn't write storage area\n");
return -1;
}
return 0;
case TK1_SYSCALL_READ_DATA:
if (storage_read_data(&part_table, arg1, (uint8_t *)arg2,
arg3) < 0) {
debug_puts("couldn't read storage area\n");
return -1;
}
return 0;
case TK1_SYSCALL_SET_LED:
led_set(arg1);