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fw: Add pre loaded flash app and flash data storage

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- Add per app flash storage
  - Adds four data areas. An app can allocate an area. Once allocated
    the area is tied to the CDI of the app and can only be
    read/written/deallocated by the same app.
- Add two pre loaded app slots to flash
  - Load an app from the first slot at boot. The app digest must match a
    specific digest specified in firmware.
  - Optionally load an app from the second slot
- Add a resetinfo area in FW_RAM which is used to signal an app's intent
  of resetting the system and, optionally, pass data to firmware or the
  next app in a bootchain.

Co-authored-by: Jonas Thörnblad <jonas@tillitis.se>
Co-authored-by: Mikael Ågren <mikael@tillitis.se>
Co-authored-by: Daniel Jobson <jobson@tillitis.se>
This commit is contained in:
Michael Cardell Widerkrantz 2025-03-12 16:17:48 +01:00 • committed by Mikael Ågren
parent 4841b1b127
commit 2c1c05f180
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GPG key ID: E02DA3D397792C46
25 changed files with 1642 additions and 27 deletions
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28
hw/application_fpga/fw/tk1/rng.c Normal file
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// Copyright (C) 2024 - Tillitis AB
// SPDX-License-Identifier: GPL-2.0-only
#include "rng.h"
#include <tkey/tk1_mem.h>
#include <stdint.h>
// clang-format off
static volatile uint32_t *trng_status = (volatile uint32_t *)TK1_MMIO_TRNG_STATUS;
static volatile uint32_t *trng_entropy = (volatile uint32_t *)TK1_MMIO_TRNG_ENTROPY;
// clang-format on
uint32_t rng_get_word(void)
{
while ((*trng_status & (1 << TK1_MMIO_TRNG_STATUS_READY_BIT)) == 0) {
}
return *trng_entropy;
}
uint32_t rng_xorwow(uint32_t state, uint32_t acc)
{
state ^= state << 13;
state ^= state >> 17;
state ^= state << 5;
state += acc;
return state;
}