mirror of
https://github.com/tillitis/tillitis-key1.git
synced 2024-07-06 11:22:38 +00:00
403 lines
9.7 KiB
C
403 lines
9.7 KiB
C
/*
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* Copyright (C) 2022, 2023 - Tillitis AB
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* SPDX-License-Identifier: GPL-2.0-only
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*/
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#include "../tk1/blake2s/blake2s.h"
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#include "../tk1/lib.h"
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#include "../tk1/proto.h"
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#include "../tk1/types.h"
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#include "../tk1_mem.h"
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// clang-format off
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volatile uint32_t *tk1name0 = (volatile uint32_t *)TK1_MMIO_TK1_NAME0;
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volatile uint32_t *tk1name1 = (volatile uint32_t *)TK1_MMIO_TK1_NAME1;
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volatile uint32_t *uds = (volatile uint32_t *)TK1_MMIO_UDS_FIRST;
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volatile uint32_t *cdi = (volatile uint32_t *)TK1_MMIO_TK1_CDI_FIRST;
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volatile uint32_t *udi = (volatile uint32_t *)TK1_MMIO_TK1_UDI_FIRST;
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volatile uint32_t *switch_app = (volatile uint32_t *)TK1_MMIO_TK1_SWITCH_APP;
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volatile uint8_t *fw_ram = (volatile uint8_t *)TK1_MMIO_FW_RAM_BASE;
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volatile uint32_t *timer = (volatile uint32_t *)TK1_MMIO_TIMER_TIMER;
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volatile uint32_t *timer_prescaler = (volatile uint32_t *)TK1_MMIO_TIMER_PRESCALER;
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volatile uint32_t *timer_status = (volatile uint32_t *)TK1_MMIO_TIMER_STATUS;
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volatile uint32_t *timer_ctrl = (volatile uint32_t *)TK1_MMIO_TIMER_CTRL;
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volatile uint32_t *trng_status = (volatile uint32_t *)TK1_MMIO_TRNG_STATUS;
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volatile uint32_t *trng_entropy = (volatile uint32_t *)TK1_MMIO_TRNG_ENTROPY;
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volatile uint32_t *fw_blake2s_addr = (volatile uint32_t *)TK1_MMIO_TK1_BLAKE2S;
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// clang-format on
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#define UDS_WORDS 8
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#define UDI_WORDS 2
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#define CDI_WORDS 8
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void *memcpy(void *dest, const void *src, size_t n)
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{
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uint8_t *src_byte = (uint8_t *)src;
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uint8_t *dest_byte = (uint8_t *)dest;
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for (int i = 0; i < n; i++) {
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dest_byte[i] = src_byte[i];
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}
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return dest;
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}
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void puts(char *reason)
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{
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for (char *c = reason; *c != '\0'; c++) {
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writebyte(*c);
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}
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}
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void putsn(char *p, int n)
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{
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for (int i = 0; i < n; i++) {
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writebyte(p[i]);
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}
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}
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void puthex(uint8_t c)
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{
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unsigned int upper = (c >> 4) & 0xf;
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unsigned int lower = c & 0xf;
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writebyte(upper < 10 ? '0' + upper : 'a' - 10 + upper);
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writebyte(lower < 10 ? '0' + lower : 'a' - 10 + lower);
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}
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void puthexn(uint8_t *p, int n)
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{
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for (int i = 0; i < n; i++) {
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puthex(p[i]);
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}
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}
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void hexdump(void *buf, int len)
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{
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uint8_t *byte_buf = (uint8_t *)buf;
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for (int i = 0; i < len; i++) {
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puthex(byte_buf[i]);
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if (i % 2 == 1) {
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writebyte(' ');
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}
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if (i != 1 && i % 16 == 1) {
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puts("\r\n");
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}
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}
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puts("\r\n");
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}
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void reverseword(uint32_t *wordp)
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{
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*wordp = ((*wordp & 0xff000000) >> 24) | ((*wordp & 0x00ff0000) >> 8) |
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((*wordp & 0x0000ff00) << 8) | ((*wordp & 0x000000ff) << 24);
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}
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uint32_t wait_timer_tick(uint32_t last_timer)
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{
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uint32_t newtimer;
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for (;;) {
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newtimer = *timer;
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if (newtimer != last_timer) {
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return newtimer;
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}
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}
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}
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void zero_fwram()
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{
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for (int i = 0; i < TK1_MMIO_FW_RAM_SIZE; i++) {
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fw_ram[i] = 0x00;
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}
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}
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int check_fwram_zero_except(unsigned int offset, uint8_t expected_val)
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{
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int failed = 0;
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for (unsigned int i = 0; i < TK1_MMIO_FW_RAM_SIZE; i++) {
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uint32_t addr = TK1_MMIO_FW_RAM_BASE + i;
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uint8_t *p = (uint8_t *)addr;
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uint8_t val = *(volatile uint8_t *)p;
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int failed_now = 0;
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if (i == offset) {
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if (val != expected_val) {
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failed_now = 1;
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puts(" wrong value at: ");
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}
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} else {
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if (val != 0) {
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failed_now = 1;
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puts(" not zero at: ");
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}
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}
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if (failed_now) {
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failed = 1;
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reverseword(&addr);
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puthexn((uint8_t *)&addr, 4);
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puts("\r\n");
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}
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}
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return failed;
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}
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void failmsg(char *s)
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{
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puts("FAIL: ");
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puts(s);
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puts("\r\n");
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}
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int main()
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{
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// Function pointer to blake2s()
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volatile int (*fw_blake2s)(void *, unsigned long, const void *,
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unsigned long, const void *, unsigned long,
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blake2s_ctx *);
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uint8_t in;
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// Hard coded test UDS in ../../data/uds.hex
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// clang-format off
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uint32_t uds_test[8] = {
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0x80818283,
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0x94959697,
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0xa0a1a2a3,
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0xb4b5b6b7,
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0xc0c1c2c3,
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0xd4d5d6d7,
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0xe0e1e2e3,
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0xf4f5f6f7,
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};
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// clang-format on
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// Wait for terminal program and a character to be typed
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in = readbyte();
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puts("\r\nI'm testfw on:");
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// Output the TK1 core's NAME0 and NAME1
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uint32_t name;
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wordcpy_s(&name, 1, (void *)tk1name0, 1);
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reverseword(&name);
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putsn((char *)&name, 4);
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puts(" ");
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wordcpy_s(&name, 1, (void *)tk1name1, 1);
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reverseword(&name);
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putsn((char *)&name, 4);
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puts("\r\n");
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uint32_t zeros[8];
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memset(zeros, 0, 8 * 4);
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int anyfailed = 0;
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uint32_t uds_local[UDS_WORDS];
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// Should get non-empty UDS
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wordcpy_s(uds_local, UDS_WORDS, (void *)uds, UDS_WORDS);
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if (memeq(uds_local, zeros, UDS_WORDS * 4)) {
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failmsg("UDS empty");
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anyfailed = 1;
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}
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puts("\r\nUDS: ");
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for (int i = 0; i < UDS_WORDS * 4; i++) {
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puthex(((uint8_t *)uds_local)[i]);
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}
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puts("\r\n");
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if (!memeq(uds_local, uds_test, UDS_WORDS * 4)) {
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failmsg("UDS not equal to test UDS");
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anyfailed = 1;
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}
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// Should NOT be able to read from UDS again
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wordcpy_s(uds_local, UDS_WORDS, (void *)uds, UDS_WORDS);
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if (!memeq(uds_local, zeros, UDS_WORDS * 4)) {
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failmsg("Read UDS a second time");
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anyfailed = 1;
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}
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uint32_t udi_local[UDI_WORDS];
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// Should get non-empty UDI
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wordcpy_s(udi_local, UDI_WORDS, (void *)udi, UDI_WORDS);
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if (memeq(udi_local, zeros, UDI_WORDS * 4)) {
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failmsg("UDI empty");
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anyfailed = 1;
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}
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// Should be able to write to CDI in fw (non-app) mode.
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uint32_t cdi_writetest[CDI_WORDS] = {0xdeafbeef, 0xdeafbeef, 0xdeafbeef,
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0xdeafbeef, 0xdeafbeef, 0xdeafbeef,
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0xdeafbeef, 0xdeafbeef};
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uint32_t cdi_readback[CDI_WORDS];
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wordcpy_s((void *)cdi, CDI_WORDS, cdi_writetest, CDI_WORDS);
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wordcpy_s(cdi_readback, CDI_WORDS, (void *)cdi, CDI_WORDS);
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if (!memeq(cdi_writetest, cdi_readback, CDI_WORDS * 4)) {
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failmsg("Can't write CDI in fw mode");
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anyfailed = 1;
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}
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// Should be able to read bytes from CDI.
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uint8_t cdi_readback_bytes[CDI_WORDS * 4];
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memcpy(cdi_readback_bytes, (void *)cdi, CDI_WORDS * 4);
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if (!memeq(cdi_writetest, cdi_readback_bytes, CDI_WORDS * 4)) {
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failmsg("Can't read bytes from CDI");
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anyfailed = 1;
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}
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// Test FW_RAM.
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puts("\r\nTesting FW_RAM (takes 15s on hw)...\r\n");
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for (unsigned int i = 0; i < TK1_MMIO_FW_RAM_SIZE; i++) {
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zero_fwram();
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*(volatile uint8_t *)(TK1_MMIO_FW_RAM_BASE + i) = 0x42;
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int fwram_fail = check_fwram_zero_except(i, 0x42);
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if (fwram_fail) {
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anyfailed = 1;
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}
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}
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uint32_t sw = *switch_app;
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if (sw != 0) {
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failmsg("switch_app is not 0 in fw mode");
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anyfailed = 1;
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}
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// Store function pointer to blake2s() so it's reachable from app
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*fw_blake2s_addr = (uint32_t)blake2s;
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// Turn on application mode.
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// -------------------------
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*switch_app = 1;
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sw = *switch_app;
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if (sw != 0xffffffff) {
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failmsg("switch_app is not 0xffffffff in app mode");
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anyfailed = 1;
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}
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// Should NOT be able to read from UDS in app-mode.
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wordcpy_s(uds_local, UDS_WORDS, (void *)uds, UDS_WORDS);
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if (!memeq(uds_local, zeros, UDS_WORDS * 4)) {
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failmsg("Read from UDS in app-mode");
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anyfailed = 1;
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}
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// Should NOT be able to read from UDI in app-mode.
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wordcpy_s(udi_local, UDI_WORDS, (void *)udi, UDI_WORDS);
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if (!memeq(udi_local, zeros, UDI_WORDS * 4)) {
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failmsg("Read from UDI in app-mode");
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anyfailed = 1;
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}
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uint32_t cdi_local[CDI_WORDS];
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uint32_t cdi_local2[CDI_WORDS];
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wordcpy_s(cdi_local, CDI_WORDS, (void *)cdi, CDI_WORDS);
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// Write to CDI should NOT have any effect in app mode.
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wordcpy_s((void *)cdi, CDI_WORDS, zeros, CDI_WORDS);
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wordcpy_s(cdi_local2, CDI_WORDS, (void *)cdi, CDI_WORDS);
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if (!memeq(cdi_local, cdi_local2, CDI_WORDS * 4)) {
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failmsg("Write to CDI in app-mode");
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anyfailed = 1;
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}
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// Test FW_RAM.
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*fw_ram = 0x21;
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if (*fw_ram == 0x21) {
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failmsg("Write and read FW RAM in app-mode");
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anyfailed = 1;
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}
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puts("\r\nTesting timer... 3");
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// Matching clock at 18 MHz, giving us timer in seconds
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*timer_prescaler = 18 * 1000000;
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// Test timer expiration after 1s
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*timer = 1;
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// Start the timer
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*timer_ctrl = (1 << TK1_MMIO_TIMER_CTRL_START_BIT);
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while (*timer_status & (1 << TK1_MMIO_TIMER_STATUS_RUNNING_BIT)) {
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}
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// Now timer has expired and is ready to run again
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puts(" 2");
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// Test to interrupt a timer - and reads from timer register
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// Starting 10s timer and interrupting it in 3s...
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*timer = 10;
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*timer_ctrl = (1 << TK1_MMIO_TIMER_CTRL_START_BIT);
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uint32_t last_timer = 10;
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for (int i = 0; i < 3; i++) {
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last_timer = wait_timer_tick(last_timer);
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}
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// Stop the timer
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*timer_ctrl = (1 << TK1_MMIO_TIMER_CTRL_STOP_BIT);
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puts(" 1. done.\r\n");
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if (*timer_status & (1 << TK1_MMIO_TIMER_STATUS_RUNNING_BIT)) {
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failmsg("Timer didn't stop");
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anyfailed = 1;
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}
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if (*timer != 10) {
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failmsg("Timer didn't reset to 10");
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anyfailed = 1;
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}
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// Testing the blake2s MMIO in app mode
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fw_blake2s = (volatile int (*)(void *, unsigned long, const void *,
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unsigned long, const void *,
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unsigned long, blake2s_ctx *)) *
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fw_blake2s_addr;
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char msg[17] = "dldlkjsdkljdslsdj";
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uint32_t digest0[8];
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uint32_t digest1[8];
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blake2s_ctx b2s_ctx;
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blake2s(&digest0[0], 32, NULL, 0, &msg, 17, &b2s_ctx);
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fw_blake2s(&digest1[0], 32, NULL, 0, &msg, 17, &b2s_ctx);
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puts("\r\ndigest #0: \r\n");
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hexdump((uint8_t *)digest0, 32);
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puts("digest #1: \r\n");
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hexdump((uint8_t *)digest1, 32);
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if (!memeq(digest0, digest1, 32)) {
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failmsg("Digests not the same");
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anyfailed = 1;
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}
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// Check and display test results.
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puts("\r\n--> ");
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if (anyfailed) {
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puts("Some test FAILED!\r\n");
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} else {
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puts("All tests passed.\r\n");
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}
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puts("\r\nHere are 256 bytes from the TRNG:\r\n");
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for (int j = 0; j < 8; j++) {
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for (int i = 0; i < 8; i++) {
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while ((*trng_status &
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(1 << TK1_MMIO_TRNG_STATUS_READY_BIT)) == 0) {
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}
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uint32_t rnd = *trng_entropy;
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puthexn((uint8_t *)&rnd, 4);
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puts(" ");
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}
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puts("\r\n");
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}
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puts("\r\n");
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puts("Now echoing what you type...\r\n");
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for (;;) {
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in = readbyte(); // blocks
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writebyte(in);
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}
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}
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