]> git.ozlabs.org Git - petitboot/blobdiff - discover/platform-powerpc.c
discover/discover-server: Restrict clients based on uid
[petitboot] / discover / platform-powerpc.c
index 4eb28057c9fb6c7513a05c315cda8599c71cdc7c..a3f7bf53a7292b8728092cdb0a92de466190cf02 100644 (file)
@@ -2,61 +2,45 @@
 #include <assert.h>
 #include <string.h>
 #include <stdlib.h>
-#include <limits.h>
+#include <errno.h>
+#include <fcntl.h>
 #include <sys/types.h>
 #include <sys/wait.h>
-#include <sys/fcntl.h>
 #include <sys/stat.h>
+#include <asm/byteorder.h>
 
+#include <file/file.h>
 #include <talloc/talloc.h>
 #include <list/list.h>
 #include <log/log.h>
 #include <process/process.h>
 
+#include "hostboot.h"
 #include "platform.h"
+#include "ipmi.h"
+#include "dt.h"
 
 static const char *partition = "common";
-static const char *sysparams_dir = "/sys/firmware/opal/sysparams";
-
-struct param {
-       char                    *name;
-       char                    *value;
-       bool                    modified;
-       struct list_item        list;
-};
+static const char *sysparams_dir = "/sys/firmware/opal/sysparams/";
+static const char *devtree_dir = "/proc/device-tree/";
 
 struct platform_powerpc {
-       struct list             params;
-};
-
-static const char *known_params[] = {
-       "auto-boot?",
-       "petitboot,network",
-       "petitboot,timeout",
-       NULL,
+       struct param_list *params;
+       struct ipmi     *ipmi;
+       int             (*get_ipmi_bootdev)(
+                               struct platform_powerpc *platform,
+                               uint8_t *bootdev, bool *persistent);
+       int             (*clear_ipmi_bootdev)(
+                               struct platform_powerpc *platform,
+                               bool persistent);
+       int             (*set_os_boot_sensor)(
+                               struct platform_powerpc *platform);
+       void            (*get_platform_versions)(struct system_info *info);
 };
 
 #define to_platform_powerpc(p) \
        (struct platform_powerpc *)(p->platform_data)
 
-/* a partition max a max size of 64k * 16bytes = 1M */
-static const int max_partition_size = 64 * 1024 * 16;
-
-static bool param_is_known(const char *param, unsigned int len)
-{
-       const char *known_param;
-       unsigned int i;
-
-       for (i = 0; known_params[i]; i++) {
-               known_param = known_params[i];
-               if (len == strlen(known_param) &&
-                               !strncmp(param, known_param, len))
-                       return true;
-       }
-
-       return false;
-}
-
 static int parse_nvram_params(struct platform_powerpc *platform,
                char *buf, int len)
 {
@@ -85,7 +69,6 @@ static int parse_nvram_params(struct platform_powerpc *platform,
 
        for (pos = buf + i; pos < buf + len; pos += paramlen + 1) {
                unsigned int namelen;
-               struct param *param;
                char *newline;
 
                newline = strchr(pos, '\n');
@@ -105,16 +88,13 @@ static int parse_nvram_params(struct platform_powerpc *platform,
                if (namelen == 0)
                        continue;
 
-               if (!param_is_known(name, namelen))
+               if (!param_list_is_known_n(platform->params, name, namelen))
                        continue;
 
+               *value = '\0';
                value++;
 
-               param = talloc(platform, struct param);
-               param->modified = false;
-               param->name = talloc_strndup(platform, name, namelen);
-               param->value = talloc_strdup(platform, value);
-               list_add(&platform->params, &param->list);
+               param_list_set(platform->params, name, value, false);
        }
 
        return 0;
@@ -122,7 +102,7 @@ static int parse_nvram_params(struct platform_powerpc *platform,
 
 static int parse_nvram(struct platform_powerpc *platform)
 {
-       struct process *process;
+       struct process_stdout *stdout;
        const char *argv[5];
        int rc;
 
@@ -132,23 +112,17 @@ static int parse_nvram(struct platform_powerpc *platform)
        argv[3] = partition;
        argv[4] = NULL;
 
-       process = process_create(platform);
-       process->path = "nvram";
-       process->argv = argv;
-       process->keep_stdout = true;
-
-       rc = process_run_sync(process);
+       rc = process_get_stdout_argv(NULL, &stdout, argv);
 
-       if (rc || !process_exit_ok(process)) {
+       if (rc) {
                fprintf(stderr, "nvram process returned "
                                "non-zero exit status\n");
                rc = -1;
        } else {
-               rc = parse_nvram_params(platform, process->stdout_buf,
-                                           process->stdout_len);
+               rc = parse_nvram_params(platform, stdout->buf, stdout->len);
        }
 
-       process_release(process);
+       talloc_free(stdout);
        return rc;
 }
 
@@ -157,7 +131,7 @@ static int write_nvram(struct platform_powerpc *platform)
        struct process *process;
        struct param *param;
        const char *argv[6];
-       int rc;
+       int rc = 0;
 
        argv[0] = "nvram";
        argv[1] = "--update-config";
@@ -170,7 +144,7 @@ static int write_nvram(struct platform_powerpc *platform)
        process->path = "nvram";
        process->argv = argv;
 
-       list_for_each_entry(&platform->params, param, list) {
+       param_list_for_each(platform->params, param) {
                char *paramstr;
 
                if (!param->modified)
@@ -196,412 +170,429 @@ static int write_nvram(struct platform_powerpc *platform)
        return rc;
 }
 
-static const char *get_param(struct platform_powerpc *platform,
-               const char *name)
+static void params_update_all(struct param_list *pl,
+       const struct config *config, const struct config *defaults)
 {
-       struct param *param;
+       char *tmp = NULL;
+       const char *val;
 
-       list_for_each_entry(&platform->params, param, list)
-               if (!strcmp(param->name, name))
-                       return param->value;
-       return NULL;
-}
+       if (config->autoboot_enabled == defaults->autoboot_enabled)
+               val = "";
+       else
+               val = config->autoboot_enabled ? "true" : "false";
 
-static void set_param(struct platform_powerpc *platform, const char *name,
-               const char *value)
-{
-       struct param *param;
+       param_list_set_non_empty(pl, "auto-boot?", val, true);
 
-       list_for_each_entry(&platform->params, param, list) {
-               if (strcmp(param->name, name))
-                       continue;
+       if (config->autoboot_timeout_sec == defaults->autoboot_timeout_sec)
+               val = "";
+       else
+               val = tmp = talloc_asprintf(pl, "%d",
+                       config->autoboot_timeout_sec);
 
-               if (!strcmp(param->value, value))
-                       return;
+       param_list_set_non_empty(pl, "petitboot,timeout", val, true);
+       if (tmp)
+               talloc_free(tmp);
 
-               talloc_free(param->value);
-               param->value = talloc_strdup(param, value);
-               param->modified = true;
-               return;
+       val = config->lang ?: "";
+       param_list_set_non_empty(pl, "petitboot,language", val, true);
+
+       if (config->allow_writes == defaults->allow_writes)
+               val = "";
+       else
+               val = config->allow_writes ? "true" : "false";
+       param_list_set_non_empty(pl, "petitboot,write?", val, true);
+
+       if (!config->manual_console) {
+               val = config->boot_console ?: "";
+               param_list_set_non_empty(pl, "petitboot,console", val, true);
        }
 
+       val = config->http_proxy ?: "";
+       param_list_set_non_empty(pl, "petitboot,http_proxy", val, true);
+       val = config->https_proxy ?: "";
+       param_list_set_non_empty(pl, "petitboot,https_proxy", val, true);
 
-       param = talloc(platform, struct param);
-       param->modified = true;
-       param->name = talloc_strdup(platform, name);
-       param->value = talloc_strdup(platform, value);
-       list_add(&platform->params, &param->list);
+       params_update_network_values(pl, "petitboot,network", config);
+       params_update_bootdev_values(pl, "petitboot,bootdevs", config);
 }
 
-static int parse_hwaddr(struct interface_config *ifconf, char *str)
+static void config_set_ipmi_bootdev(struct config *config, enum ipmi_bootdev bootdev,
+               bool persistent)
 {
-       int i;
-
-       if (strlen(str) != strlen("00:00:00:00:00:00"))
-               return -1;
-
-       for (i = 0; i < HWADDR_SIZE; i++) {
-               char byte[3], *endp;
-               unsigned long x;
+       config->ipmi_bootdev = bootdev;
+       config->ipmi_bootdev_persistent = persistent;
 
-               byte[0] = str[i * 3 + 0];
-               byte[1] = str[i * 3 + 1];
-               byte[2] = '\0';
-
-               x = strtoul(byte, &endp, 16);
-               if (endp != byte + 2)
-                       return -1;
-
-               ifconf->hwaddr[i] = x & 0xff;
-       }
-
-       return 0;
+       if (bootdev == IPMI_BOOTDEV_SAFE)
+               config->safe_mode = true;
 }
 
-static int parse_one_interface_config(struct config *config,
-               char *confstr)
+static int read_bootdev_sysparam(const char *name, uint8_t *val)
 {
-       struct interface_config *ifconf;
-       char *tok, *saveptr;
-
-       ifconf = talloc_zero(config, struct interface_config);
-
-       if (!confstr || !strlen(confstr))
-               goto out_err;
-
-       /* first token should be the mac address */
-       tok = strtok_r(confstr, ",", &saveptr);
-       if (!tok)
-               goto out_err;
-
-       if (parse_hwaddr(ifconf, tok))
-               goto out_err;
-
-       /* second token is the method */
-       tok = strtok_r(NULL, ",", &saveptr);
-       if (!tok || !strlen(tok) || !strcmp(tok, "ignore")) {
-               ifconf->ignore = true;
+       uint8_t buf[2];
+       char path[50];
+       int fd, rc;
 
-       } else if (!strcmp(tok, "dhcp")) {
-               ifconf->method = CONFIG_METHOD_DHCP;
+       assert(strlen(sysparams_dir) + strlen(name) < sizeof(path));
+       snprintf(path, sizeof(path), "%s%s", sysparams_dir, name);
 
-       } else if (!strcmp(tok, "static")) {
-               ifconf->method = CONFIG_METHOD_STATIC;
+       fd = open(path, O_RDONLY);
+       if (fd < 0) {
+               pb_debug("powerpc: can't access sysparam %s\n",
+                               name);
+               return -1;
+       }
 
-               /* ip/mask, [optional] gateway */
-               tok = strtok_r(NULL, ",", &saveptr);
-               if (!tok)
-                       goto out_err;
-               ifconf->static_config.address =
-                       talloc_strdup(ifconf, tok);
+       rc = read(fd, buf, sizeof(buf));
 
-               tok = strtok_r(NULL, ",", &saveptr);
-               if (tok) {
-                       ifconf->static_config.gateway =
-                               talloc_strdup(ifconf, tok);
-               }
+       close(fd);
 
-       } else {
-               pb_log("Unknown network configuration method %s\n", tok);
-               goto out_err;
+       /* bootdev definitions should only be one byte in size */
+       if (rc != 1) {
+               pb_debug("powerpc: sysparam %s read returned %d\n",
+                               name, rc);
+               return -1;
        }
 
-       config->network.interfaces = talloc_realloc(config,
-                       config->network.interfaces,
-                       struct interface_config *,
-                       ++config->network.n_interfaces);
+       pb_debug("powerpc: sysparam %s: 0x%02x\n", name, buf[0]);
 
-       config->network.interfaces[config->network.n_interfaces - 1] = ifconf;
+       if (!ipmi_bootdev_is_valid(buf[0]))
+               return -1;
 
+       *val = buf[0];
        return 0;
-out_err:
-       talloc_free(ifconf);
-       return -1;
 }
 
-static int parse_one_dns_config(struct config *config,
-               char *confstr)
+static int write_bootdev_sysparam(const char *name, uint8_t val)
 {
-       char *tok, *saveptr;
-
-       for (tok = strtok_r(confstr, ",", &saveptr); tok;
-                       tok = strtok_r(NULL, ",", &saveptr)) {
-
-               char *server = talloc_strdup(config, tok);
+       char path[50];
+       int fd, rc;
 
-               config->network.dns_servers = talloc_realloc(config,
-                               config->network.dns_servers, const char *,
-                               ++config->network.n_dns_servers);
+       assert(strlen(sysparams_dir) + strlen(name) < sizeof(path));
+       snprintf(path, sizeof(path), "%s%s", sysparams_dir, name);
 
-               config->network.dns_servers[config->network.n_dns_servers - 1]
-                               = server;
+       fd = open(path, O_WRONLY);
+       if (fd < 0) {
+               pb_debug("powerpc: can't access sysparam %s for writing\n",
+                               name);
+               return -1;
        }
 
-       return 0;
-}
-
-static void populate_network_config(struct platform_powerpc *platform,
-               struct config *config)
-{
-       const char *cval;
-       char *val;
-       int i;
-
-       cval = get_param(platform, "petitboot,network");
-       if (!cval || !strlen(cval))
-               return;
-
-       val = talloc_strdup(config, cval);
-
-       for (i = 0; ; i++) {
-               char *tok, *saveptr;
+       for (;;) {
+               errno = 0;
+               rc = write(fd, &val, sizeof(val));
+               if (rc == sizeof(val)) {
+                       rc = 0;
+                       break;
+               }
 
-               tok = strtok_r(i == 0 ? val : NULL, " ", &saveptr);
-               if (!tok)
+               if (rc <= 0 && errno != EINTR) {
+                       pb_log("powerpc: error updating sysparam %s: %s",
+                                       name, strerror(errno));
+                       rc = -1;
                        break;
+               }
+       }
 
-               if (!strncasecmp(tok, "dns,", strlen("dns,")))
-                       parse_one_dns_config(config, tok + strlen("dns,"));
-               else
-                       parse_one_interface_config(config, tok);
+       close(fd);
 
-       }
+       if (!rc)
+               pb_debug("powerpc: set sysparam %s: 0x%02x\n", name, val);
 
-       talloc_free(val);
+       return rc;
 }
 
-static void populate_config(struct platform_powerpc *platform,
-               struct config *config)
+static int clear_ipmi_bootdev_sysparams(
+               struct platform_powerpc *platform __attribute__((unused)),
+               bool persistent)
 {
-       const char *val;
-       char *end;
-       unsigned long timeout;
-
-       /* if the "auto-boot?' property is present and "false", disable auto
-        * boot */
-       val = get_param(platform, "auto-boot?");
-       config->autoboot_enabled = !val || strcmp(val, "false");
-
-       val = get_param(platform, "petitboot,timeout");
-       if (val) {
-               timeout = strtoul(val, &end, 10);
-               if (end != val) {
-                       if (timeout >= INT_MAX)
-                               timeout = INT_MAX;
-                       config->autoboot_timeout_sec = (int)timeout;
-               }
+       if (persistent) {
+               /* invalidate default-boot-device setting */
+               write_bootdev_sysparam("default-boot-device", 0xff);
+       } else {
+               /* invalidate next-boot-device setting */
+               write_bootdev_sysparam("next-boot-device", 0xff);
        }
-
-       populate_network_config(platform, config);
+       return 0;
 }
 
-static char *iface_config_str(void *ctx, struct interface_config *config)
+static int get_ipmi_bootdev_sysparams(
+               struct platform_powerpc *platform __attribute__((unused)),
+               uint8_t *bootdev, bool *persistent)
 {
-       char *str;
+       uint8_t next_bootdev, default_bootdev;
+       bool next_valid, default_valid;
+       int rc;
 
-       /* todo: HWADDR size is hardcoded as 6, but we may need to handle
-        * different hardware address formats */
-       str = talloc_asprintf(ctx, "%02x:%02x:%02x:%02x:%02x:%02x,",
-                       config->hwaddr[0], config->hwaddr[1],
-                       config->hwaddr[2], config->hwaddr[3],
-                       config->hwaddr[4], config->hwaddr[5]);
+       rc = read_bootdev_sysparam("next-boot-device", &next_bootdev);
+       next_valid = rc == 0;
 
-       if (config->ignore) {
-               str = talloc_asprintf_append(str, "ignore");
+       rc = read_bootdev_sysparam("default-boot-device", &default_bootdev);
+       default_valid = rc == 0;
 
-       } else if (config->method == CONFIG_METHOD_DHCP) {
-               str = talloc_asprintf_append(str, "dhcp");
+       /* nothing valid? no need to change the config */
+       if (!next_valid && !default_valid)
+               return -1;
 
-       } else if (config->method == CONFIG_METHOD_STATIC) {
-               str = talloc_asprintf_append(str, "static,%s%s%s",
-                               config->static_config.address,
-                               config->static_config.gateway ? "," : "",
-                               config->static_config.gateway ?: "");
-       }
-       return str;
+       *persistent = !next_valid;
+       *bootdev = next_valid ? next_bootdev : default_bootdev;
+       return 0;
 }
 
-static char *dns_config_str(void *ctx, const char **dns_servers, int n)
+static int clear_ipmi_bootdev_ipmi(struct platform_powerpc *platform,
+                                  bool persistent __attribute__((unused)))
 {
-       char *str;
-       int i;
-
-       str = talloc_strdup(ctx, "dns,");
-       for (i = 0; i < n; i++) {
-               str = talloc_asprintf_append(str, "%s%s",
-                               i == 0 ? "" : ",",
-                               dns_servers[i]);
-       }
-
-       return str;
+       uint16_t resp_len;
+       uint8_t resp[1];
+       uint8_t req[] = {
+               0x05, /* parameter selector: boot flags */
+               0x80, /* data 1: valid */
+               0x00, /* data 2: bootdev: no override */
+               0x00, /* data 3: system defaults */
+               0x00, /* data 4: no request for shared mode, mux defaults */
+               0x00, /* data 5: no instance request */
+       };
+
+       resp_len = sizeof(resp);
+
+       ipmi_transaction(platform->ipmi, IPMI_NETFN_CHASSIS,
+                       IPMI_CMD_CHASSIS_SET_SYSTEM_BOOT_OPTIONS,
+                       req, sizeof(req),
+                       resp, &resp_len,
+                       ipmi_timeout);
+       return 0;
 }
 
-static void update_string_config(struct platform_powerpc *platform,
-               const char *name, const char *value)
+static int get_ipmi_bootdev_ipmi(struct platform_powerpc *platform,
+               uint8_t *bootdev, bool *persistent)
 {
-       const char *cur;
-
-       cur = get_param(platform, name);
-
-       /* don't set an empty parameter if it doesn't already exist */
-       if (!cur && !strlen(value))
-               return;
+       uint16_t resp_len;
+       uint8_t resp[8];
+       char *debug_buf;
+       int rc;
+       uint8_t req[] = {
+               0x05, /* parameter selector: boot flags */
+               0x00, /* no set selector */
+               0x00, /* no block selector */
+       };
+
+       resp_len = sizeof(resp);
+       rc = ipmi_transaction(platform->ipmi, IPMI_NETFN_CHASSIS,
+                       IPMI_CMD_CHASSIS_GET_SYSTEM_BOOT_OPTIONS,
+                       req, sizeof(req),
+                       resp, &resp_len,
+                       ipmi_timeout);
+       if (rc) {
+               pb_log("platform: error reading IPMI boot options\n");
+               return -1;
+       }
 
-       set_param(platform, name, value);
-}
+       if (resp_len != sizeof(resp)) {
+               pb_log("platform: unexpected length (%d) in "
+                               "boot options response\n", resp_len);
+               return -1;
+       }
 
-static void update_network_config(struct platform_powerpc *platform,
-       struct config *config)
-{
-       unsigned int i;
-       char *val;
+       debug_buf = format_buffer(platform, resp, resp_len);
+       pb_debug_fn("IPMI get_bootdev response:\n%s\n", debug_buf);
+       talloc_free(debug_buf);
 
-       val = talloc_strdup(platform, "");
+       if (resp[0] != 0) {
+               pb_log("platform: non-zero completion code %d from IPMI req\n",
+                               resp[0]);
+               return -1;
+       }
 
-       for (i = 0; i < config->network.n_interfaces; i++) {
-               char *iface_str = iface_config_str(platform,
-                                       config->network.interfaces[i]);
-               val = talloc_asprintf_append(val, "%s%s",
-                               *val == '\0' ? "" : " ", iface_str);
-               talloc_free(iface_str);
+       /* check for correct parameter version */
+       if ((resp[1] & 0xf) != 0x1) {
+               pb_log("platform: unexpected version (0x%x) in "
+                               "boot options response\n", resp[0]);
+               return -1;
        }
 
-       if (config->network.n_dns_servers) {
-               char *dns_str = dns_config_str(platform,
-                                               config->network.dns_servers,
-                                               config->network.n_dns_servers);
-               val = talloc_asprintf_append(val, "%s%s",
-                               *val == '\0' ? "" : " ", dns_str);
-               talloc_free(dns_str);
+       /* check for valid paramters */
+       if (resp[2] & 0x80) {
+               pb_debug("platform: boot options are invalid/locked\n");
+               return -1;
        }
 
-       update_string_config(platform, "petitboot,network", val);
+       *persistent = false;
 
-       talloc_free(val);
+       /* check for valid flags */
+       if (!(resp[3] & 0x80)) {
+               pb_debug("platform: boot flags are invalid, ignoring\n");
+               return -1;
+       }
+
+       *persistent = resp[3] & 0x40;
+       *bootdev = (resp[4] >> 2) & 0x0f;
+       return 0;
 }
 
-static int update_config(struct platform_powerpc *platform,
-               struct config *config, struct config *defaults)
+static int set_ipmi_os_boot_sensor(struct platform_powerpc *platform)
 {
-       char *tmp = NULL;
-       const char *val;
-
-       if (config->autoboot_enabled == defaults->autoboot_enabled)
-               val = "";
-       else
-               val = config->autoboot_enabled ? "true" : "false";
-       update_string_config(platform, "auto-boot?", val);
+       int sensor_number;
+       uint16_t resp_len;
+       uint8_t resp[1];
+       uint8_t req[] = {
+               0x00, /* sensor number: os boot */
+               0xA9, /* operation: set everything */
+               0x00, /* sensor reading: none */
+               0x40, /* assertion mask lsb: set state 6 */
+               0x00, /* assertion mask msb: none */
+               0x00, /* deassertion mask lsb: none */
+               0x00, /* deassertion mask msb: none */
+               0x00, /* event data 1: none */
+               0x00, /* event data 2: none */
+               0x00, /* event data 3: none */
+       };
+
+       sensor_number = get_ipmi_sensor(platform, IPMI_SENSOR_ID_OS_BOOT);
+       if (sensor_number < 0) {
+               pb_log("Couldn't find OS boot sensor in device tree\n");
+               return -1;
+       }
 
-       if (config->autoboot_timeout_sec == defaults->autoboot_timeout_sec)
-               val = "";
-       else
-               val = tmp = talloc_asprintf(platform, "%d",
-                               config->autoboot_timeout_sec);
+       req[0] = sensor_number;
 
-       update_string_config(platform, "petitboot,timeout", val);
-       if (tmp)
-               talloc_free(tmp);
+       resp_len = sizeof(resp);
 
-       update_network_config(platform, config);
+       ipmi_transaction(platform->ipmi, IPMI_NETFN_SE,
+                       IPMI_CMD_SENSOR_SET,
+                       req, sizeof(req),
+                       resp, &resp_len,
+                       ipmi_timeout); return 0;
 
-       return write_nvram(platform);
+       return 0;
 }
 
-static void set_exclusive_devtype(struct config *config,
-               enum device_type devtype)
+static void get_ipmi_network_override(struct platform_powerpc *platform,
+                       struct config *config)
 {
-       config->n_boot_priorities = 2;
-       config->boot_priorities = talloc_realloc(config,
-                       config->boot_priorities, struct boot_priority,
-                       config->n_boot_priorities);
-       config->boot_priorities[0].type = devtype;
-       config->boot_priorities[0].priority = 0;
-       config->boot_priorities[1].type = DEVICE_TYPE_ANY;
-       config->boot_priorities[1].priority = -1;
-}
-
-/* bootdev options that we recognise */
-enum ipmi_bootdev {
-       IPMI_BOOTDEV_NONE = 0x00,
-       IPMI_BOOTDEV_NETWORK = 0x01,
-       IPMI_BOOTDEV_DISK = 0x2,
-       IPMI_BOOTDEV_CDROM = 0x5,
-       IPMI_BOOTDEV_SETUP = 0x6,
-};
+       uint16_t min_len = 12, resp_len = 53, version;
+       const uint32_t magic_value = 0x21706221;
+       uint8_t resp[resp_len];
+       char *debug_buf;
+       uint32_t cookie;
+       bool persistent;
+       int i, rc;
+       uint8_t req[] = {
+               0x61, /* parameter selector: OEM section (network) */
+               0x00, /* no set selector */
+               0x00, /* no block selector */
+       };
+
+       rc = ipmi_transaction(platform->ipmi, IPMI_NETFN_CHASSIS,
+                       IPMI_CMD_CHASSIS_GET_SYSTEM_BOOT_OPTIONS,
+                       req, sizeof(req),
+                       resp, &resp_len,
+                       ipmi_timeout);
+
+       debug_buf = format_buffer(platform, resp, resp_len);
+       pb_debug_fn("IPMI net override response:\n%s\n", debug_buf);
+       talloc_free(debug_buf);
+
+       if (rc) {
+               pb_debug("IPMI network config option unavailable\n");
+               return;
+       }
 
-static int read_bootdev_sysparam(const char *name, uint8_t *val)
-{
-       uint8_t buf[2];
-       char path[50];
-       int fd, rc;
+       if (resp_len < min_len) {
+               pb_debug("IPMI net response too small\n");
+               return;
+       }
 
-       strcpy(path, sysparams_dir);
-       assert(strlen(name) < sizeof(path) - strlen(path));
-       strcat(path, name);
+       if (resp[0] != 0) {
+               pb_log("platform: non-zero completion code %d from IPMI network req\n",
+                      resp[0]);
+               return;
+       }
 
-       fd = open(path, O_RDONLY);
-       if (fd < 0)
-               return -1;
+       /* Check for correct parameter version */
+       if ((resp[1] & 0xf) != 0x1) {
+               pb_log("platform: unexpected version (0x%x) in network override response\n",
+                      resp[0]);
+               return;
+       }
 
-       rc = read(fd, buf, sizeof(buf));
+       /* Check that the parameters are valid */
+       if (resp[2] & 0x80) {
+               pb_debug("platform: network override is invalid/locked\n");
+               return;
+       }
 
-       close(fd);
+       /* Check for valid parameters in the boot flags section */
+       if (!(resp[3] & 0x80)) {
+               pb_debug("platform: network override valid flag not set\n");
+               return;
+       }
+       /* Read the persistent flag; if it is set we need to save this config */
+       persistent = resp[3] & 0x40;
+       if (persistent)
+               pb_debug("platform: network override is persistent\n");
+
+       /* Check 4-byte cookie value */
+       i = 4;
+       memcpy(&cookie, &resp[i], sizeof(cookie));
+       cookie = __be32_to_cpu(cookie);
+       if (cookie != magic_value) {
+               pb_log_fn("Incorrect cookie %x\n", cookie);
+               return;
+       }
+       i += sizeof(cookie);
+
+       /* Check 2-byte version number */
+       memcpy(&version, &resp[i], sizeof(version));
+       version = __be16_to_cpu(version);
+       i += sizeof(version);
+       if (version != 1) {
+               pb_debug("Unexpected version: %u\n", version);
+               return;
+       }
 
-       /* bootdev definitions should only be one byte in size */
-       if (rc != 1)
-               return -1;
+       /* Interpret the rest of the interface config */
+       rc = parse_ipmi_interface_override(config, &resp[i], resp_len - i);
 
-       switch (buf[0]) {
-       default:
-               return -1;
-       case IPMI_BOOTDEV_NONE:
-       case IPMI_BOOTDEV_NETWORK:
-       case IPMI_BOOTDEV_DISK:
-       case IPMI_BOOTDEV_CDROM:
-       case IPMI_BOOTDEV_SETUP:
-               *val = buf[0];
+       if (!rc && persistent) {
+               /* Write this new config to NVRAM */
+               params_update_network_values(platform->params,
+                       "petitboot,network", config);
+               rc = write_nvram(platform);
+               if (rc)
+                       pb_log("platform: Failed to save persistent interface override\n");
        }
-
-       return 0;
 }
 
-static void parse_opal_sysparams(struct config *config)
+static void config_get_active_consoles(struct config *config)
 {
-       uint8_t next_bootdev, default_bootdev;
-       bool next_valid, default_valid;
-       int rc;
-
-       rc = read_bootdev_sysparam("next-boot-device", &next_bootdev);
-       next_valid = rc == 0;
-
-       rc = read_bootdev_sysparam("default-boot-device", &default_bootdev);
-       default_valid = rc == 0;
-
-       /* nothing valid? no need to change the config */
-       if (!next_valid && !default_valid)
-               return;
-
-       if (!next_valid)
-               next_bootdev = default_bootdev;
-
-       /* todo: copy default to next */
-
-       switch (next_bootdev) {
-       case IPMI_BOOTDEV_NONE:
-               return;
-       case IPMI_BOOTDEV_DISK:
-               set_exclusive_devtype(config, DEVICE_TYPE_DISK);
-               break;
-       case IPMI_BOOTDEV_NETWORK:
-               set_exclusive_devtype(config, DEVICE_TYPE_NETWORK);
-               break;
-       case IPMI_BOOTDEV_CDROM:
-               set_exclusive_devtype(config, DEVICE_TYPE_OPTICAL);
-               break;
-       case IPMI_BOOTDEV_SETUP:
-               config->autoboot_enabled = false;
-               break;
+       struct stat sbuf;
+       char *fsp_prop = NULL;
+
+       config->n_consoles = 2;
+       config->consoles = talloc_array(config, char *, config->n_consoles);
+       if (!config->consoles)
+               goto err;
+
+       config->consoles[0] = talloc_asprintf(config->consoles,
+                                       "/dev/hvc0 [IPMI / Serial]");
+       config->consoles[1] = talloc_asprintf(config->consoles,
+                                       "/dev/tty1 [VGA]");
+
+       fsp_prop = talloc_asprintf(config, "%sfsps", devtree_dir);
+       if (stat(fsp_prop, &sbuf) == 0) {
+               /* FSP based machines also have a separate serial console */
+               config->consoles = talloc_realloc(config, config->consoles,
+                                               char *, config->n_consoles + 1);
+               if (!config->consoles)
+                       goto err;
+               config->consoles[config->n_consoles++] = talloc_asprintf(
+                                               config->consoles,
+                                               "/dev/hvc1 [Serial]");
        }
+
+       return;
+err:
+       config->n_consoles = 0;
+       pb_log("Failed to allocate memory for consoles\n");
 }
 
 static int load_config(struct platform *p, struct config *config)
@@ -611,11 +602,25 @@ static int load_config(struct platform *p, struct config *config)
 
        rc = parse_nvram(platform);
        if (rc)
-               return rc;
+               pb_log_fn("Failed to parse nvram\n");
+
+       config_populate_all(config, platform->params);
+
+       if (platform->get_ipmi_bootdev) {
+               bool bootdev_persistent;
+               uint8_t bootdev = IPMI_BOOTDEV_INVALID;
+               rc = platform->get_ipmi_bootdev(platform, &bootdev,
+                               &bootdev_persistent);
+               if (!rc && ipmi_bootdev_is_valid(bootdev)) {
+                       config_set_ipmi_bootdev(config, bootdev,
+                               bootdev_persistent);
+               }
+       }
 
-       populate_config(platform, config);
+       if (platform->ipmi)
+               get_ipmi_network_override(platform, config);
 
-       parse_opal_sysparams(config);
+       config_get_active_consoles(config);
 
        return 0;
 }
@@ -624,24 +629,74 @@ static int save_config(struct platform *p, struct config *config)
 {
        struct platform_powerpc *platform = to_platform_powerpc(p);
        struct config *defaults;
-       int rc;
+
+       if (config->ipmi_bootdev == IPMI_BOOTDEV_INVALID &&
+           platform->clear_ipmi_bootdev) {
+               platform->clear_ipmi_bootdev(platform,
+                               config->ipmi_bootdev_persistent);
+               config->ipmi_bootdev = IPMI_BOOTDEV_NONE;
+               config->ipmi_bootdev_persistent = false;
+       }
 
        defaults = talloc_zero(platform, struct config);
        config_set_defaults(defaults);
 
-       rc = update_config(platform, config, defaults);
+       params_update_all(platform->params, config, defaults);
 
        talloc_free(defaults);
-       return rc;
+       return write_nvram(platform);
+}
+
+static void pre_boot(struct platform *p, const struct config *config)
+{
+       struct platform_powerpc *platform = to_platform_powerpc(p);
+
+       if (!config->ipmi_bootdev_persistent && platform->clear_ipmi_bootdev)
+               platform->clear_ipmi_bootdev(platform, false);
+
+       if (platform->set_os_boot_sensor)
+               platform->set_os_boot_sensor(platform);
+}
+
+static int get_sysinfo(struct platform *p, struct system_info *sysinfo)
+{
+       struct platform_powerpc *platform = p->platform_data;
+       char *buf, *filename;
+       int len, rc;
+
+       filename = talloc_asprintf(platform, "%smodel", devtree_dir);
+       rc = read_file(platform, filename, &buf, &len);
+       if (rc == 0)
+               sysinfo->type = talloc_steal(sysinfo, buf);
+       talloc_free(filename);
+
+       filename = talloc_asprintf(platform, "%ssystem-id", devtree_dir);
+       rc = read_file(platform, filename, &buf, &len);
+       if (rc == 0)
+               sysinfo->identifier = talloc_steal(sysinfo, buf);
+       talloc_free(filename);
+
+       sysinfo->bmc_mac = talloc_zero_size(sysinfo, HWADDR_SIZE);
+
+       if (platform->ipmi) {
+               ipmi_get_bmc_mac(platform->ipmi, sysinfo->bmc_mac);
+               ipmi_get_bmc_versions(platform->ipmi, sysinfo);
+       }
+
+       if (platform->get_platform_versions)
+               platform->get_platform_versions(sysinfo);
+
+       return 0;
 }
 
 static bool probe(struct platform *p, void *ctx)
 {
        struct platform_powerpc *platform;
        struct stat statbuf;
+       bool bmc_present;
        int rc;
 
-       /* we need a device tree and a working nvram binary */
+       /* we need a device tree */
        rc = stat("/proc/device-tree", &statbuf);
        if (rc)
                return false;
@@ -649,23 +704,44 @@ static bool probe(struct platform *p, void *ctx)
        if (!S_ISDIR(statbuf.st_mode))
                return false;
 
-       rc = process_run_simple(ctx, "nvram", "--print-config", NULL);
-       if (!WIFEXITED(rc) || WEXITSTATUS(rc) != 0)
-               return false;
-
-       platform = talloc(ctx, struct platform_powerpc);
-       list_init(&platform->params);
+       platform = talloc_zero(ctx, struct platform_powerpc);
+       platform->params = talloc_zero(platform, struct param_list);
+       param_list_init(platform->params, common_known_params());
 
        p->platform_data = platform;
+
+       bmc_present = stat("/proc/device-tree/bmc", &statbuf) == 0;
+
+       if (ipmi_present() && bmc_present) {
+               pb_debug("platform: using direct IPMI for IPMI paramters\n");
+               platform->ipmi = ipmi_open(platform);
+               platform->get_ipmi_bootdev = get_ipmi_bootdev_ipmi;
+               platform->clear_ipmi_bootdev = clear_ipmi_bootdev_ipmi;
+               platform->set_os_boot_sensor = set_ipmi_os_boot_sensor;
+       } else if (!stat(sysparams_dir, &statbuf)) {
+               pb_debug("platform: using sysparams for IPMI paramters\n");
+               platform->get_ipmi_bootdev = get_ipmi_bootdev_sysparams;
+               platform->clear_ipmi_bootdev = clear_ipmi_bootdev_sysparams;
+
+       } else {
+               pb_log("platform: no IPMI parameter support\n");
+       }
+
+       if (bmc_present)
+               platform->get_platform_versions = hostboot_load_versions;
+
        return true;
 }
 
+
 static struct platform platform_powerpc = {
-       .name           = "powerpc",
-       .dhcp_arch_id   = 0x000e,
-       .probe          = probe,
-       .load_config    = load_config,
-       .save_config    = save_config,
+       .name                   = "powerpc",
+       .dhcp_arch_id           = 0x000e,
+       .probe                  = probe,
+       .load_config            = load_config,
+       .save_config            = save_config,
+       .pre_boot               = pre_boot,
+       .get_sysinfo            = get_sysinfo,
 };
 
 register_platform(platform_powerpc);