#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 "platform.h"
static const char *partition = "common";
-static const char *sysparams_dir = "/sys/firmware/opal/sysparams";
+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);
}
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;
if (!next_valid && !default_valid)
return;
- if (!next_valid)
+ if (next_valid) {
+ /* invalidate next-boot-device setting */
+ write_bootdev_sysparam("next-boot-device", 0xff);
+ } else {
next_bootdev = default_bootdev;
-
- /* todo: copy default to next */
+ }
switch (next_bootdev) {
case IPMI_BOOTDEV_NONE:
struct stat statbuf;
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;
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);