git.ozlabs.org Git - petitboot/blob - discover/platform-arm64.c

   1 /*
   2  *  This program is free software; you can redistribute it and/or modify
   3  *  it under the terms of the GNU General Public License as published by
   4  *  the Free Software Foundation; version 2 of the License.
   5  *
   6  *  This program is distributed in the hope that it will be useful,
   7  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
   8  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   9  *  GNU General Public License for more details.
  10  *
  11  *  You should have received a copy of the GNU General Public License
  12  *  along with this program; if not, write to the Free Software
  13  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  14  *
  15  *  Copyright (C) 2018 Huaxintong Semiconductor Technology Co.,Ltd. All rights
  16  *  reserved.
  17  *  Author: Ge Song <ge.song@hxt-semitech.com>
  18  */
  19
  20 #include <ctype.h>
  21 #include <errno.h>
  22 #include <limits.h>
  23 #include <stdlib.h>
  24 #include <string.h>
  25
  26 #include "efi/efivar.h"
  27 #include "file/file.h"
  28 #include "log/log.h"
  29 #include <process/process.h>
  30 #include <system/system.h>
  31 #include "talloc/talloc.h"
  32 #include "types/types.h"
  33
  34 #include "ipmi.h"
  35 #include "platform.h"
  36
  37 struct platform_arm64 {
  38         const struct efi_mount *efi_mount;
  39         struct param_list *params;
  40         struct ipmi *ipmi;
  41 };
  42
  43 static inline struct platform_arm64 *to_platform_arm64(struct platform *p)
  44 {
  45         return (struct platform_arm64 *)(p->platform_data);
  46 }
  47
  48 static void read_efivars(const struct efi_mount *efi_mount,
  49         struct param_list *pl)
  50 {
  51         const char** known;
  52
  53         if (!efi_mount)
  54                 return;
  55
  56         param_list_for_each_known_param(pl, known) {
  57                 struct efi_data *efi_data;
  58
  59                 if (efi_get_variable(NULL, efi_mount, *known, &efi_data))
  60                         continue;
  61
  62                 param_list_set(pl, *known, efi_data->data, true);
  63                 talloc_free(efi_data);
  64         }
  65 }
  66
  67 static void write_efivars(const struct efi_mount *efi_mount,
  68         const struct param_list *pl)
  69 {
  70         struct efi_data efi_data;
  71         struct param *param;
  72
  73         if (!efi_mount)
  74                 return;
  75
  76         efi_data.attributes = EFI_DEFALT_ATTRIBUTES;
  77
  78         param_list_for_each(pl, param) {
  79                 if (!param->modified)
  80                         continue;
  81
  82                 efi_data.data = param->value;
  83                 efi_data.data_size = strlen(param->value) + 1;
  84                 efi_set_variable(efi_mount, param->name, &efi_data);
  85         }
  86 }
  87
  88 static void get_active_consoles(struct config *config)
  89 {
  90         config->n_consoles = 0;
  91         config->consoles = talloc_array(config, char *, 3);
  92         if (!config->consoles)
  93                 return;
  94
  95         config->consoles[0] = talloc_asprintf(config,
  96                                         "/dev/hvc0 [IPMI / Serial]");
  97         config->consoles[1] = talloc_asprintf(config,
  98                                         "/dev/ttyAMA0 [Serial]");
  99         config->consoles[2] = talloc_asprintf(config,
 100                                         "/dev/tty1 [VGA]");
 101         config->n_consoles = 3;
 102 }
 103
 104 static int load_config(struct platform *p, struct config *config)
 105 {
 106         const struct efi_mount *efi_mount = to_platform_arm64(p)->efi_mount;
 107         struct param_list *pl = to_platform_arm64(p)->params;
 108
 109         read_efivars(efi_mount, pl);
 110         config_populate_all(config, pl);
 111         get_active_consoles(config);
 112
 113         return 0;
 114 }
 115
 116 static char *stdout_cleaner(struct process_stdout *out)
 117 {
 118         char *p;
 119         const char *const end = out->buf + out->len;
 120
 121         for (p = out->buf; *p && p < end; p++) {
 122                 if (*p == '\n' || *p == '\r') {
 123                         *p = 0;
 124                 } else if (!isprint(*p)) {
 125                         *p = '.';
 126                 } else if (*p == '\t') {
 127                         *p = ' ';
 128                 }
 129         }
 130         return out->buf;
 131 }
 132
 133 static int get_sysinfo(struct platform *p, struct system_info *sysinfo)
 134 {
 135         struct platform_arm64 *platform = to_platform_arm64(p);
 136         struct process_stdout *out1, *out2;
 137
 138         /* Use dmidecode to get sysinfo type and identifier. */
 139
 140         process_get_stdout(NULL, &out1, pb_system_apps.dmidecode,
 141                 "--string=system-manufacturer",
 142                 NULL);
 143         process_get_stdout(NULL, &out2, pb_system_apps.dmidecode,
 144                 "--string=system-product-name",
 145                 NULL);
 146
 147         if (out1 || out2)
 148                 sysinfo->type = talloc_asprintf(sysinfo, "%s %s",
 149                         out1 ? stdout_cleaner(out1) : "Unknown",
 150                         out2 ? stdout_cleaner(out2) : "Unknown");
 151         talloc_free(out1);
 152         talloc_free(out2);
 153
 154         process_get_stdout(NULL, &out1, pb_system_apps.dmidecode,
 155                 "--string=system-uuid",
 156                 NULL);
 157
 158         if (out1)
 159                 sysinfo->identifier = talloc_asprintf(sysinfo, "%s",
 160                         stdout_cleaner(out1));
 161         talloc_free(out1);
 162
 163         sysinfo->bmc_mac = talloc_zero_size(sysinfo, HWADDR_SIZE);
 164
 165         if (platform->ipmi) {
 166                 ipmi_get_bmc_mac(platform->ipmi, sysinfo->bmc_mac);
 167                 ipmi_get_bmc_versions(platform->ipmi, sysinfo);
 168         }
 169
 170         pb_debug_fn("type:       '%s'\n", sysinfo->type);
 171         pb_debug_fn("identifier: '%s'\n", sysinfo->identifier);
 172         pb_debug_fn("bmc_mac:    '%s'\n", sysinfo->bmc_mac);
 173
 174         return 0;
 175 }
 176
 177 static void params_update_all(struct param_list *pl,
 178         const struct config *config, const struct config *defaults)
 179 {
 180         char *tmp = NULL;
 181         const char *val;
 182
 183         if (config->autoboot_enabled == defaults->autoboot_enabled)
 184                 val = "";
 185         else
 186                 val = config->autoboot_enabled ? "true" : "false";
 187
 188         param_list_set_non_empty(pl, "auto-boot?", val, true);
 189
 190         if (config->autoboot_timeout_sec == defaults->autoboot_timeout_sec)
 191                 val = "";
 192         else
 193                 val = tmp = talloc_asprintf(pl, "%d",
 194                         config->autoboot_timeout_sec);
 195
 196         param_list_set_non_empty(pl, "petitboot,timeout", val, true);
 197         if (tmp)
 198                 talloc_free(tmp);
 199
 200         val = config->lang ?: "";
 201         param_list_set_non_empty(pl, "petitboot,language", val, true);
 202
 203         if (config->allow_writes == defaults->allow_writes)
 204                 val = "";
 205         else
 206                 val = config->allow_writes ? "true" : "false";
 207         param_list_set_non_empty(pl, "petitboot,write?", val, true);
 208
 209         if (!config->manual_console) {
 210                 val = config->boot_console ?: "";
 211                 param_list_set_non_empty(pl, "petitboot,console", val, true);
 212         }
 213
 214         val = config->http_proxy ?: "";
 215         param_list_set_non_empty(pl, "petitboot,http_proxy", val, true);
 216         val = config->https_proxy ?: "";
 217         param_list_set_non_empty(pl, "petitboot,https_proxy", val, true);
 218
 219         params_update_network_values(pl, "petitboot,network", config);
 220         params_update_bootdev_values(pl, "petitboot,bootdevs", config);
 221 }
 222
 223 static int save_config(struct platform *p, struct config *config)
 224 {
 225         const struct efi_mount *efi_mount = to_platform_arm64(p)->efi_mount;
 226         struct param_list *pl = to_platform_arm64(p)->params;
 227         struct config *defaults;
 228
 229         defaults = talloc_zero(NULL, struct config);
 230         config_set_defaults(defaults);
 231
 232         params_update_all(pl, config, defaults);
 233         talloc_free(defaults);
 234
 235         write_efivars(efi_mount, pl);
 236
 237         return 0;
 238 }
 239
 240 static bool probe(struct platform *p, void *ctx)
 241 {
 242         static const struct efi_mount efi_mount = {
 243                 .path = "/sys/firmware/efi/efivars",
 244                 .guid = "fb78ab4b-bd43-41a0-99a2-4e74bef9169b",
 245         };
 246         struct platform_arm64 *platform;
 247
 248         platform = talloc_zero(ctx, struct platform_arm64);
 249         platform->params = talloc_zero(platform, struct param_list);
 250         param_list_init(platform->params, common_known_params());
 251
 252         if (efi_check_mount(&efi_mount))
 253                 platform->efi_mount = &efi_mount;
 254
 255         p->platform_data = platform;
 256
 257         return true;
 258 }
 259
 260 static struct platform platform_arm64 = {
 261         .name                   = "arm64",
 262         .dhcp_arch_id           = 0x000d,
 263         .probe                  = probe,
 264         .load_config            = load_config,
 265         .save_config            = save_config,
 266         .get_sysinfo            = get_sysinfo,
 267 };
 268
 269 register_platform(platform_arm64);