| 1 | /* |
| 2 | * QTest testcase for RISC-V CSRs |
| 3 | * |
| 4 | * Copyright (c) 2024 Syntacore. |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify it |
| 7 | * under the terms of the GNU General Public License as published by the |
| 8 | * Free Software Foundation; either version 2 of the License, or |
| 9 | * (at your option) any later version. |
| 10 | * |
| 11 | * This program is distributed in the hope that it will be useful, but WITHOUT |
| 12 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| 13 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| 14 | * for more details. |
| 15 | */ |
| 16 | |
| 17 | #include "qemu/osdep.h" |
| 18 | #include "libqtest.h" |
| 19 | |
| 20 | #define CSR_MVENDORID 0xf11 |
| 21 | #define CSR_MISELECT 0x350 |
| 22 | |
| 23 | #define CSR_SEED 0x015 |
| 24 | |
| 25 | #define SEED_OPST_MASK (UINT64_C(0x3) << 30) |
| 26 | #define SEED_OPST_ES16 (UINT64_C(0x2) << 30) |
| 27 | #define SEED_OPST_DEAD (UINT64_C(0x3) << 30) |
| 28 | |
| 29 | static void run_test_csr(void) |
| 30 | { |
| 31 | uint64_t res; |
| 32 | uint64_t val = 0; |
| 33 | |
| 34 | QTestState *qts = qtest_init("-machine virt -cpu veyron-v1"); |
| 35 | |
| 36 | res = qtest_csr_call(qts, "get_csr", 0, CSR_MVENDORID, &val); |
| 37 | |
| 38 | g_assert_cmpint(res, ==, 0); |
| 39 | g_assert_cmpint(val, ==, 0x61f); |
| 40 | |
| 41 | val = 0xff; |
| 42 | res = qtest_csr_call(qts, "set_csr", 0, CSR_MISELECT, &val); |
| 43 | |
| 44 | g_assert_cmpint(res, ==, 0); |
| 45 | |
| 46 | val = 0; |
| 47 | res = qtest_csr_call(qts, "get_csr", 0, CSR_MISELECT, &val); |
| 48 | |
| 49 | g_assert_cmpint(res, ==, 0); |
| 50 | g_assert_cmpint(val, ==, 0xff); |
| 51 | |
| 52 | qtest_quit(qts); |
| 53 | } |
| 54 | |
| 55 | static void run_test_seed_csr(void) |
| 56 | { |
| 57 | uint64_t val = 0; |
| 58 | uint64_t opst; |
| 59 | QTestState *qts; |
| 60 | |
| 61 | qts = qtest_init("-machine virt -cpu tt-ascalon"); |
| 62 | |
| 63 | qtest_csr_call(qts, "get_csr", 0, CSR_SEED, &val); |
| 64 | |
| 65 | opst = val & SEED_OPST_MASK; |
| 66 | g_assert_true(opst == SEED_OPST_ES16 || |
| 67 | opst == SEED_OPST_DEAD); |
| 68 | |
| 69 | g_assert_cmphex(val >> 32, ==, 0); |
| 70 | |
| 71 | qtest_quit(qts); |
| 72 | } |
| 73 | |
| 74 | int main(int argc, char **argv) |
| 75 | { |
| 76 | g_test_init(&argc, &argv, NULL); |
| 77 | |
| 78 | if (qtest_has_machine("virt")) { |
| 79 | qtest_add_func("/cpu/csr", run_test_csr); |
| 80 | qtest_add_func("/cpu/csr/seed", run_test_seed_csr); |
| 81 | } |
| 82 | |
| 83 | return g_test_run(); |
| 84 | } |