mock_rv_core_ibex.cc

// Copyright lowRISC contributors (OpenTitan project).
// Licensed under the Apache License, Version 2.0, see LICENSE for details.
// SPDX-License-Identifier: Apache-2.0
 
#include "sw/device/lib/base/hardened.h"
#include "sw/device/lib/crypto/drivers/rv_core_ibex.h"
#include "sw/device/lib/crypto/impl/status.h"
 
namespace test {
extern "C" {
 
hardened_bool_t ibex_check_security_config(void) { return kHardenedBoolTrue; }
 
status_t ibex_set_security_config(void) { return OTCRYPTO_OK; }
 
status_t ibex_disable_icache(hardened_bool_t *icache_enabled) {
  return OTCRYPTO_OK;
}
 
void ibex_restore_icache(hardened_bool_t icache_enabled) {
  asm volatile("nop");
}
 
// Since this mock library is for tests only, the randomness does not need to be
// real. https://xkcd.com/221/
uint32_t ibex_rnd32_read(void) { return 4; }
 
void ibex_clear_rf(void) { asm volatile("nop"); }
 
uint32_t hardened_memshred_random_word(void) { return ibex_rnd32_read(); }
 
uint32_t random_order_random_word(void) { return ibex_rnd32_read(); }
}
}  // namespace test