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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 | // SPDX-License-Identifier: GPL-2.0+ /* * Copyright (C) 2019, Theobroma Systems Design und Consulting GmbH */ #include <command.h> #include <errno.h> #include <fdt_support.h> #include <log.h> #include <malloc.h> #include <tee/optee.h> #include <linux/sizes.h> #include <test/ut.h> #include <test/optee.h> /* 4k ought to be enough for anybody */ #define FDT_COPY_SIZE (4 * SZ_1K) extern u32 __dtb_test_optee_base_begin; extern u32 __dtb_test_optee_optee_begin; extern u32 __dtb_test_optee_no_optee_begin; static void *fdt; static bool expect_success; static int optee_test_init(struct unit_test_state *uts) { void *fdt_optee = &__dtb_test_optee_optee_begin; void *fdt_no_optee = &__dtb_test_optee_no_optee_begin; void *fdt_base = &__dtb_test_optee_base_begin; int ret = -ENOMEM; ut_assertok(fdt_check_header(fdt_base)); ut_assertok(fdt_check_header(fdt_optee)); ut_assertok(fdt_check_header(fdt_no_optee)); fdt = malloc(FDT_COPY_SIZE); if (!fdt) return ret; /* * Resize the FDT to 4k so that we have room to operate on * * (and relocate it since the memory might be mapped * read-only) */ ut_assertok(fdt_open_into(fdt_base, fdt, FDT_COPY_SIZE)); return 0; } OPTEE_TEST_INIT(optee_test_init, 0); static int optee_test_uninit(struct unit_test_state *uts) { free(fdt); return 0; } OPTEE_TEST_UNINIT(optee_test_uninit, 0); static int optee_fdt_firmware(struct unit_test_state *uts) { const void *prop; int offs, len; offs = fdt_path_offset(fdt, "/firmware/optee"); ut_assert(expect_success ? offs >= 0 : offs < 0); /* only continue if we have an optee node */ if (offs < 0) return CMD_RET_SUCCESS; prop = fdt_getprop(fdt, offs, "compatible", &len); ut_assertok(strncmp((const char *)prop, "linaro,optee-tz", len)); prop = fdt_getprop(fdt, offs, "method", &len); ut_assert(strncmp(prop, "hvc", 3) == 0 || strncmp(prop, "smc", 3) == 0); return CMD_RET_SUCCESS; } static int optee_fdt_protected_memory(struct unit_test_state *uts) { int offs, subnode; bool found; offs = fdt_path_offset(fdt, "/firmware/optee"); ut_assert(expect_success ? offs >= 0 : offs < 0); /* only continue if we have an optee node */ if (offs < 0) return CMD_RET_SUCCESS; /* optee inserts its memory regions as reserved-memory nodes */ offs = fdt_subnode_offset(fdt, 0, "reserved-memory"); ut_assert(offs >= 0); subnode = fdt_first_subnode(fdt, offs); ut_assert(subnode); found = 0; while (subnode >= 0) { const char *name = fdt_get_name(fdt, subnode, NULL); struct fdt_resource res; ut_assert(name); /* only handle optee reservations */ if (strncmp(name, "optee", 5)) continue; found = true; /* check if this subnode has a reg property */ ut_assertok(fdt_get_resource(fdt, subnode, "reg", 0, &res)); subnode = fdt_next_subnode(fdt, subnode); } ut_assert(found); return CMD_RET_SUCCESS; } /* (1) Try to copy optee nodes from empty dt */ static int optee_fdt_copy_empty(struct unit_test_state *uts) { void *fdt_no_optee = &__dtb_test_optee_no_optee_begin; /* This should still run successfully */ ut_assertok(optee_copy_fdt_nodes(fdt_no_optee, fdt)); expect_success = false; ut_assertok(optee_fdt_firmware(uts)); ut_assertok(optee_fdt_protected_memory(uts)); return 0; } OPTEE_TEST(optee_fdt_copy_empty, 0); /* (2) Try to copy optee nodes from prefilled dt */ static int optee_fdt_copy_prefilled(struct unit_test_state *uts) { void *fdt_optee = &__dtb_test_optee_optee_begin; ut_assertok(optee_copy_fdt_nodes(fdt_optee, fdt)); expect_success = true; ut_assertok(optee_fdt_firmware(uts)); ut_assertok(optee_fdt_protected_memory(uts)); return 0; } OPTEE_TEST(optee_fdt_copy_prefilled, 0); /* (3) Try to copy OP-TEE nodes into a already filled DT */ static int optee_fdt_copy_already_filled(struct unit_test_state *uts) { void *fdt_optee = &__dtb_test_optee_optee_begin; ut_assertok(fdt_open_into(fdt_optee, fdt, FDT_COPY_SIZE)); ut_assertok(optee_copy_fdt_nodes(fdt_optee, fdt)); expect_success = true; ut_assertok(optee_fdt_firmware(uts)); ut_assertok(optee_fdt_protected_memory(uts)); return 0; } OPTEE_TEST(optee_fdt_copy_already_filled, 0); |