+#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 <talloc/talloc.h>
#include <list/list.h>
#include "platform.h"
static const char *partition = "common";
+static const char *sysparams_dir = "/sys/firmware/opal/sysparams/";
struct param {
char *name;
"auto-boot?",
"petitboot,network",
"petitboot,timeout",
+ "petitboot,bootdev",
NULL,
};
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)
{
}
populate_network_config(platform, config);
+
+ populate_bootdev_config(platform, config);
}
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)
{
update_network_config(platform, config);
+ update_bootdev_config(platform, config);
+
return write_nvram(platform);
}
+static void set_exclusive_devtype(struct config *config,
+ enum device_type devtype)
+{
+ 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,
+};
+
+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]);
+
+ 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];
+ }
+
+ 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 void parse_opal_sysparams(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) {
+ /* invalidate next-boot-device setting */
+ write_bootdev_sysparam("next-boot-device", 0xff);
+ } else {
+ next_bootdev = default_bootdev;
+ }
+
+ 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;
+ }
+}
+
static int load_config(struct platform *p, struct config *config)
{
struct platform_powerpc *platform = to_platform_powerpc(p);
populate_config(platform, config);
+ parse_opal_sysparams(config);
+
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);
static struct platform platform_powerpc = {
.name = "powerpc",
+ .dhcp_arch_id = 0x000e,
.probe = probe,
.load_config = load_config,
.save_config = save_config,
projects / petitboot / blobdiff