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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 | // SPDX-License-Identifier: GPL-2.0+ /* * Copyright 2016-2017 Texas Instruments, Inc. */ #include <config.h> #include <log.h> #include <linux/libfdt.h> #include <fdt_support.h> #include <asm/omap_common.h> #include <asm/omap_sec_common.h> #ifdef CONFIG_TI_SECURE_DEVICE /* Give zero values if not already defined */ #ifndef TI_OMAP5_SECURE_BOOT_RESV_SRAM_SZ #define TI_OMAP5_SECURE_BOOT_RESV_SRAM_SZ (0) #endif #ifndef CFG_SECURE_RUNTIME_RESV_SRAM_SZ #define CFG_SECURE_RUNTIME_RESV_SRAM_SZ (0) #endif int ft_hs_disable_rng(void *fdt, struct bd_info *bd) { const char *path; int offs; int ret; /* Make HW RNG reserved for secure world use */ path = "/ocp/rng"; offs = fdt_path_offset(fdt, path); if (offs < 0) { debug("Node %s not found.\n", path); return 0; } ret = fdt_setprop_string(fdt, offs, "status", "disabled"); if (ret < 0) { printf("Could not add status property to node %s: %s\n", path, fdt_strerror(ret)); return ret; } return 0; } #if (CONFIG_TI_SECURE_EMIF_TOTAL_REGION_SIZE != 0) /* * fdt_pack_reg - pack address and size array into the "reg"-suitable stream */ static int fdt_pack_reg(const void *fdt, void *buf, u64 address, u64 size) { int address_cells = fdt_address_cells(fdt, 0); int size_cells = fdt_size_cells(fdt, 0); char *p = buf; if (address_cells == 2) *(fdt64_t *)p = cpu_to_fdt64(address); else *(fdt32_t *)p = cpu_to_fdt32(address); p += 4 * address_cells; if (size_cells == 2) *(fdt64_t *)p = cpu_to_fdt64(size); else *(fdt32_t *)p = cpu_to_fdt32(size); p += 4 * size_cells; return p - (char *)buf; } int ft_hs_fixup_dram(void *fdt, struct bd_info *bd) { const char *path, *subpath; int offs, len; u32 sec_mem_start = get_sec_mem_start(); u32 sec_mem_size = CONFIG_TI_SECURE_EMIF_TOTAL_REGION_SIZE; fdt32_t address_cells = cpu_to_fdt32(fdt_address_cells(fdt, 0)); fdt32_t size_cells = cpu_to_fdt32(fdt_size_cells(fdt, 0)); u8 temp[16]; /* Up to 64-bit address + 64-bit size */ /* Delete any original secure_reserved node */ path = "/reserved-memory/secure_reserved"; offs = fdt_path_offset(fdt, path); if (offs >= 0) fdt_del_node(fdt, offs); /* Add new secure_reserved node */ path = "/reserved-memory"; offs = fdt_path_offset(fdt, path); if (offs < 0) { debug("Node %s not found\n", path); path = "/"; subpath = "reserved-memory"; offs = fdt_path_offset(fdt, path); offs = fdt_add_subnode(fdt, offs, subpath); if (offs < 0) { printf("Could not create %s%s node.\n", path, subpath); return 1; } path = "/reserved-memory"; offs = fdt_path_offset(fdt, path); fdt_setprop(fdt, offs, "#address-cells", &address_cells, sizeof(address_cells)); fdt_setprop(fdt, offs, "#size-cells", &size_cells, sizeof(size_cells)); fdt_setprop(fdt, offs, "ranges", NULL, 0); } subpath = "secure_reserved"; offs = fdt_add_subnode(fdt, offs, subpath); if (offs < 0) { printf("Could not create %s%s node.\n", path, subpath); return 1; } fdt_setprop_string(fdt, offs, "compatible", "ti,secure-memory"); fdt_setprop_string(fdt, offs, "status", "okay"); fdt_setprop(fdt, offs, "no-map", NULL, 0); len = fdt_pack_reg(fdt, temp, sec_mem_start, sec_mem_size); fdt_setprop(fdt, offs, "reg", temp, len); return 0; } #else int ft_hs_fixup_dram(void *fdt, struct bd_info *bd) { return 0; } #endif int ft_hs_add_tee(void *fdt, struct bd_info *bd) { const char *path, *subpath; int offs; extern int tee_loaded; if (!tee_loaded) return 0; path = "/firmware"; offs = fdt_path_offset(fdt, path); if (offs < 0) { path = "/"; offs = fdt_path_offset(fdt, path); if (offs < 0) { printf("Could not find root node.\n"); return 1; } subpath = "firmware"; offs = fdt_add_subnode(fdt, offs, subpath); if (offs < 0) { printf("Could not create %s node.\n", subpath); return 1; } } subpath = "optee"; offs = fdt_add_subnode(fdt, offs, subpath); if (offs < 0) { printf("Could not create %s node.\n", subpath); return 1; } fdt_setprop_string(fdt, offs, "compatible", "linaro,optee-tz"); fdt_setprop_string(fdt, offs, "method", "smc"); return 0; } #endif |