+#include <assert.h>
#include <string.h>
#include <stdlib.h>
#include <limits.h>
+#include <errno.h>
#include <sys/types.h>
#include <sys/wait.h>
+#include <sys/fcntl.h>
+#include <sys/stat.h>
+#include <file/file.h>
#include <talloc/talloc.h>
#include <list/list.h>
#include <log/log.h>
#include <process/process.h>
#include "platform.h"
+#include "ipmi.h"
static const char *partition = "common";
+static const char *sysparams_dir = "/sys/firmware/opal/sysparams/";
+static const char *devtree_dir = "/proc/device-tree/";
+static const int ipmi_timeout = 500; /* milliseconds */
struct param {
char *name;
};
struct platform_powerpc {
- struct list params;
+ struct list params;
+ struct ipmi *ipmi;
+ bool ipmi_bootdev_persistent;
+ int (*get_ipmi_bootdev)(
+ struct platform_powerpc *platform,
+ uint8_t *bootdev, bool *persistent);
+ int (*clear_ipmi_bootdev)(
+ struct platform_powerpc *platform);
};
static const char *known_params[] = {
"auto-boot?",
"petitboot,network",
"petitboot,timeout",
+ "petitboot,bootdev",
+ "petitboot,language",
+ "petitboot,debug?",
NULL,
};
static int parse_one_dns_config(struct config *config,
char *confstr)
{
- char *tok, *saveptr;
+ char *tok, *saveptr = NULL;
for (tok = strtok_r(confstr, ",", &saveptr); tok;
tok = strtok_r(NULL, ",", &saveptr)) {
static void populate_network_config(struct platform_powerpc *platform,
struct config *config)
{
+ char *val, *saveptr = NULL;
const char *cval;
- char *val;
int i;
cval = get_param(platform, "petitboot,network");
val = talloc_strdup(config, cval);
for (i = 0; ; i++) {
- char *tok, *saveptr;
+ char *tok;
tok = strtok_r(i == 0 ? val : NULL, " ", &saveptr);
if (!tok)
talloc_free(val);
}
+static void populate_bootdev_config(struct platform_powerpc *platform,
+ struct config *config)
+
+{
+ const char *val;
+
+ config->boot_device = NULL;
+
+ val = get_param(platform, "petitboot,bootdev");
+ if (!val || !strlen(val))
+ return;
+
+ if (!strncmp(val, "uuid:", strlen("uuid:"))) {
+ config->boot_device = talloc_strdup(config,
+ val + strlen("uuid:"));
+
+ } else if (!strncmp(val, "mac:", strlen("mac:"))) {
+ config->boot_device = talloc_strdup(config,
+ val + strlen("mac:"));
+
+ } else {
+ pb_log("bootdev config is in an unknown format "
+ "(expected uuid:... or mac:...)");
+ }
+}
+
static void populate_config(struct platform_powerpc *platform,
struct config *config)
{
}
}
+ val = get_param(platform, "petitboot,language");
+ config->lang = val ? talloc_strdup(config, val) : NULL;
+
populate_network_config(platform, config);
+
+ populate_bootdev_config(platform, config);
+
+ if (!config->debug) {
+ val = get_param(platform, "petitboot,debug?");
+ config->debug = val && !strcmp(val, "true");
+ }
}
static char *iface_config_str(void *ctx, struct interface_config *config)
talloc_free(val);
}
+static void update_bootdev_config(struct platform_powerpc *platform,
+ struct config *config)
+{
+ char *val, *tmp = NULL;
+
+ if (!config->boot_device)
+ val = "";
+ else
+ tmp = val = talloc_asprintf(platform,
+ "uuid:%s", config->boot_device);
+
+ update_string_config(platform, "petitboot,bootdev", val);
+ talloc_free(tmp);
+}
+
static int update_config(struct platform_powerpc *platform,
struct config *config, struct config *defaults)
{
if (tmp)
talloc_free(tmp);
+ val = config->lang ?: "";
+ update_string_config(platform, "petitboot,language", val);
+
update_network_config(platform, config);
+ update_bootdev_config(platform, config);
+
return write_nvram(platform);
}
+static void set_ipmi_bootdev(struct config *config, enum ipmi_bootdev bootdev,
+ bool persistent)
+{
+ config->ipmi_bootdev = bootdev;
+ config->ipmi_bootdev_persistent = persistent;
+
+ switch (bootdev) {
+ case IPMI_BOOTDEV_NONE:
+ case IPMI_BOOTDEV_DISK:
+ case IPMI_BOOTDEV_NETWORK:
+ case IPMI_BOOTDEV_CDROM:
+ break;
+ case IPMI_BOOTDEV_SETUP:
+ config->autoboot_enabled = false;
+ break;
+ case IPMI_BOOTDEV_SAFE:
+ config->autoboot_enabled = false;
+ config->safe_mode = true;
+ break;
+ }
+}
+
+static int read_bootdev_sysparam(const char *name, uint8_t *val)
+{
+ uint8_t buf[2];
+ char path[50];
+ int fd, rc;
+
+ strcpy(path, sysparams_dir);
+ assert(strlen(name) < sizeof(path) - strlen(path));
+ strcat(path, name);
+
+ fd = open(path, O_RDONLY);
+ if (fd < 0) {
+ pb_debug("powerpc: can't access sysparam %s\n",
+ name);
+ return -1;
+ }
+
+ rc = read(fd, buf, sizeof(buf));
+
+ close(fd);
+
+ /* 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;
+ }
+
+ pb_debug("powerpc: sysparam %s: 0x%02x\n", name, buf[0]);
+
+ if (!ipmi_bootdev_is_valid(buf[0]))
+ return -1;
+
+ *val = buf[0];
+ return 0;
+}
+
+static int write_bootdev_sysparam(const char *name, uint8_t val)
+{
+ char path[50];
+ int fd, rc;
+
+ strcpy(path, sysparams_dir);
+ assert(strlen(name) < sizeof(path) - strlen(path));
+ strcat(path, name);
+
+ fd = open(path, O_WRONLY);
+ if (fd < 0) {
+ pb_debug("powerpc: can't access sysparam %s for writing\n",
+ name);
+ return -1;
+ }
+
+ for (;;) {
+ errno = 0;
+ rc = write(fd, &val, sizeof(val));
+ if (rc == sizeof(val)) {
+ rc = 0;
+ break;
+ }
+
+ if (rc <= 0 && errno != EINTR) {
+ pb_log("powerpc: error updating sysparam %s: %s",
+ name, strerror(errno));
+ rc = -1;
+ break;
+ }
+ }
+
+ close(fd);
+
+ if (!rc)
+ pb_debug("powerpc: set sysparam %s: 0x%02x\n", name, val);
+
+ return rc;
+}
+
+static int clear_ipmi_bootdev_sysparams(
+ struct platform_powerpc *platform __attribute__((unused)))
+{
+ /* invalidate next-boot-device setting */
+ write_bootdev_sysparam("next-boot-device", 0xff);
+ return 0;
+}
+
+static int get_ipmi_bootdev_sysparams(
+ struct platform_powerpc *platform __attribute__((unused)),
+ uint8_t *bootdev, bool *persistent)
+{
+ 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 -1;
+
+ *persistent = !next_valid;
+ *bootdev = next_valid ? next_bootdev : default_bootdev;
+ return 0;
+}
+
+static int clear_ipmi_bootdev_ipmi(struct platform_powerpc *platform)
+{
+ 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 int get_ipmi_bootdev_ipmi(struct platform_powerpc *platform,
+ uint8_t *bootdev, bool *persistent)
+{
+ uint16_t resp_len;
+ uint8_t resp[8];
+ 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;
+ }
+
+ if (resp_len != sizeof(resp)) {
+ pb_log("platform: unexpected length (%d) in "
+ "boot options response\n", resp_len);
+ return -1;
+ }
+
+ if (resp[0] != 0) {
+ pb_log("platform: non-zero completion code %d from IPMI req\n",
+ resp[0]);
+ return -1;
+ }
+
+ /* 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;
+ }
+
+ /* check for valid paramters */
+ if (resp[2] & 0x80) {
+ pb_debug("platform: boot options are invalid/locked\n");
+ return -1;
+ }
+
+ *persistent = false;
+
+ /* check for valid flags */
+ if (!(resp[3] & 0x80)) {
+ pb_debug("platform: boot flags are invalid, ignoring\n");
+ return 0;
+ }
+
+ *persistent = resp[3] & 0x40;
+ *bootdev = (resp[4] >> 2) & 0x0f;
+ return 0;
+}
+
+
static int load_config(struct platform *p, struct config *config)
{
struct platform_powerpc *platform = to_platform_powerpc(p);
populate_config(platform, config);
+ if (platform->get_ipmi_bootdev) {
+ bool bootdev_persistent;
+ uint8_t bootdev;
+ rc = platform->get_ipmi_bootdev(platform, &bootdev,
+ &bootdev_persistent);
+ if (!rc && ipmi_bootdev_is_valid(bootdev)) {
+ set_ipmi_bootdev(config, bootdev, bootdev_persistent);
+ }
+ }
+
return 0;
}
return rc;
}
+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);
+}
+
+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);
+
+ return 0;
+}
+
static bool probe(struct platform *p, void *ctx)
{
struct platform_powerpc *platform;
+ struct stat statbuf;
+ int rc;
+
+ /* we need a device tree */
+ rc = stat("/proc/device-tree", &statbuf);
+ if (rc)
+ return false;
+
+ if (!S_ISDIR(statbuf.st_mode))
+ return false;
platform = talloc(ctx, struct platform_powerpc);
list_init(&platform->params);
p->platform_data = platform;
+
+ if (ipmi_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;
+
+ } 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");
+ }
+
return true;
}
+
static struct platform platform_powerpc = {
- .name = "powerpc",
- .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);
projects / petitboot / blobdiff