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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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 | // SPDX-License-Identifier: GPL-2.0+ /* * Copyright 2019 Google LLC * Written by Simon Glass <sjg@chromium.org> */ #include <command.h> #include <display_options.h> #include <log.h> #include <mapmem.h> #include <acpi/acpi_table.h> #include <asm/acpi_table.h> #include <asm/global_data.h> #include <linux/errno.h> #include <dm/acpi.h> DECLARE_GLOBAL_DATA_PTR; /** * dump_hdr() - Dump an ACPI header * * Except for the Firmware ACPI Control Structure (FACS) * additionally show the revision information. * * @hdr: ACPI header to dump */ static void dump_hdr(struct acpi_table_header *hdr) { bool has_hdr = memcmp(hdr->signature, "FACS", ACPI_NAME_LEN); printf("%.*s %16lx %5x", ACPI_NAME_LEN, hdr->signature, (ulong)map_to_sysmem(hdr), hdr->length); if (has_hdr) { printf(" v%02d %.6s %.8s %x %.4s %x\n", hdr->revision, hdr->oem_id, hdr->oem_table_id, hdr->oem_revision, hdr->creator_id, hdr->creator_revision); } else { printf("\n"); } } static int dump_table_name(const char *sig) { struct acpi_table_header *hdr; hdr = acpi_find_table(sig); if (!hdr) return -ENOENT; printf("%.*s @ %16lx\n", ACPI_NAME_LEN, hdr->signature, (ulong)nomap_to_sysmem(hdr)); print_buffer(0, hdr, 1, hdr->length, 0); return 0; } static void list_fadt(struct acpi_fadt *fadt) { if (fadt->header.revision >= 3 && fadt->x_dsdt) dump_hdr(nomap_sysmem(fadt->x_dsdt, 0)); else if (fadt->dsdt) dump_hdr(nomap_sysmem(fadt->dsdt, 0)); if (!IS_ENABLED(CONFIG_X86) && !(fadt->flags & ACPI_FADT_HW_REDUCED_ACPI)) log_err("FADT not ACPI-hardware-reduced-compliant\n"); if (fadt->header.revision >= 3 && fadt->x_firmware_ctrl) dump_hdr(nomap_sysmem(fadt->x_firmware_ctrl, 0)); else if (fadt->firmware_ctrl) dump_hdr(nomap_sysmem(fadt->firmware_ctrl, 0)); } static void list_rsdt(struct acpi_rsdp *rsdp) { int len, i, count; struct acpi_rsdt *rsdt; struct acpi_xsdt *xsdt; if (rsdp->rsdt_address) { rsdt = nomap_sysmem(rsdp->rsdt_address, 0); dump_hdr(&rsdt->header); } if (rsdp->xsdt_address) { xsdt = nomap_sysmem(rsdp->xsdt_address, 0); dump_hdr(&xsdt->header); len = xsdt->header.length - sizeof(xsdt->header); count = len / sizeof(u64); } else if (rsdp->rsdt_address) { len = rsdt->header.length - sizeof(rsdt->header); count = len / sizeof(u32); } else { return; } for (i = 0; i < count; i++) { struct acpi_table_header *hdr; u64 entry; if (rsdp->xsdt_address) entry = xsdt->entry[i]; else entry = rsdt->entry[i]; if (!entry) break; hdr = nomap_sysmem(entry, 0); dump_hdr(hdr); if (!memcmp(hdr->signature, "FACP", ACPI_NAME_LEN)) list_fadt((struct acpi_fadt *)hdr); } } static void list_rsdp(struct acpi_rsdp *rsdp) { printf("RSDP %16lx %5x v%02d %.6s\n", (ulong)map_to_sysmem(rsdp), rsdp->length, rsdp->revision, rsdp->oem_id); list_rsdt(rsdp); } static int do_acpi_list(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[]) { struct acpi_rsdp *rsdp; rsdp = map_sysmem(gd_acpi_start(), 0); if (!rsdp) { printf("No ACPI tables present\n"); return 0; } printf("Name Base Size Detail\n" "---- ---------------- ----- ----------------------------\n"); list_rsdp(rsdp); return 0; } static int do_acpi_set(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[]) { ulong val; if (argc < 2) { printf("ACPI pointer: %lx\n", gd_acpi_start()); } else { val = hextoul(argv[1], NULL); printf("Setting ACPI pointer to %lx\n", val); gd_set_acpi_start(val); } return 0; } static int do_acpi_items(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[]) { bool dump_contents; dump_contents = argc >= 2 && !strcmp("-d", argv[1]); if (!IS_ENABLED(CONFIG_ACPIGEN)) { printf("Not supported (enable ACPIGEN)\n"); return CMD_RET_FAILURE; } acpi_dump_items(dump_contents ? ACPI_DUMP_CONTENTS : ACPI_DUMP_LIST); return 0; } static int do_acpi_dump(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[]) { const char *name; char sig[ACPI_NAME_LEN]; int ret; if (argc < 2) return CMD_RET_USAGE; name = argv[1]; if (strlen(name) != ACPI_NAME_LEN) { printf("Table name '%s' must be four characters\n", name); return CMD_RET_FAILURE; } str_to_upper(name, sig, ACPI_NAME_LEN); ret = dump_table_name(sig); if (ret) { printf("Table '%.*s' not found\n", ACPI_NAME_LEN, sig); return CMD_RET_FAILURE; } return 0; } U_BOOT_LONGHELP(acpi, "list - list ACPI tables\n" "acpi items [-d] - List/dump each piece of ACPI data from devices\n" "acpi set [<addr>] - Set or show address of ACPI tables\n" "acpi dump <name> - Dump ACPI table"); U_BOOT_CMD_WITH_SUBCMDS(acpi, "ACPI tables", acpi_help_text, U_BOOT_SUBCMD_MKENT(list, 1, 1, do_acpi_list), U_BOOT_SUBCMD_MKENT(items, 2, 1, do_acpi_items), U_BOOT_SUBCMD_MKENT(set, 2, 1, do_acpi_set), U_BOOT_SUBCMD_MKENT(dump, 2, 1, do_acpi_dump)); |