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platform-powerpc.c
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platform-powerpc.c
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#include <assert.h>
#include <string.h>
#include <stdlib.h>
#include <errno.h>
#include <fcntl.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <sys/stat.h>
#include <asm/byteorder.h>
#include <limits.h>
#include <file/file.h>
#include <talloc/talloc.h>
#include <list/list.h>
#include <log/log.h>
#include <process/process.h>
#include <crypt/crypt.h>
#include "hostboot.h"
#include "platform.h"
#include "ipmi.h"
#include "dt.h"
#include "elf.h"
static const char *partition = "common";
static const char *sysparams_dir = "/sys/firmware/opal/sysparams/";
static const char *devtree_dir = "/proc/device-tree/";
struct platform_powerpc {
struct param_list *params;
struct ipmi *ipmi;
char *ipmi_mailbox_original_config;
int (*get_ipmi_bootdev)(
struct platform_powerpc *platform,
uint8_t *bootdev, bool *persistent);
int (*clear_ipmi_bootdev)(
struct platform_powerpc *platform,
bool persistent);
int (*get_ipmi_boot_mailbox)(
struct platform_powerpc *platform,
char **buf);
int (*clear_ipmi_boot_mailbox)(
struct platform_powerpc *platform);
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)
static int parse_nvram_params(struct platform_powerpc *platform,
char *buf, int len)
{
char *pos, *name, *value;
unsigned int paramlen;
int i, count;
/* discard 2 header lines:
* "common" partiton"
* ------------------
*/
pos = buf;
count = 0;
for (i = 0; i < len; i++) {
if (pos[i] == '\n')
count++;
if (count == 2)
break;
}
if (i == len) {
fprintf(stderr, "failure parsing nvram output\n");
return -1;
}
for (pos = buf + i; pos < buf + len; pos += paramlen + 1) {
unsigned int namelen;
char *newline;
newline = strchr(pos, '\n');
if (!newline)
break;
*newline = '\0';
paramlen = strlen(pos);
name = pos;
value = strchr(pos, '=');
if (!value)
continue;
namelen = value - name;
if (namelen == 0)
continue;
if (!param_list_is_known_n(platform->params, name, namelen))
continue;
*value = '\0';
value++;
param_list_set(platform->params, name, value, false);
}
return 0;
}
static int parse_nvram(struct platform_powerpc *platform)
{
struct process_stdout *stdout;
const char *argv[5];
int rc;
argv[0] = "nvram";
argv[1] = "--print-config";
argv[2] = "--partition";
argv[3] = partition;
argv[4] = NULL;
rc = process_get_stdout_argv(NULL, &stdout, argv);
if (rc) {
fprintf(stderr, "nvram process returned "
"non-zero exit status\n");
rc = -1;
} else {
rc = parse_nvram_params(platform, stdout->buf, stdout->len);
}
talloc_free(stdout);
return rc;
}
static int write_nvram(struct platform_powerpc *platform)
{
struct process *process;
struct param *param;
const char *argv[6];
int rc = 0;
argv[0] = "nvram";
argv[1] = "--update-config";
argv[2] = NULL;
argv[3] = "--partition";
argv[4] = partition;
argv[5] = NULL;
process = process_create(platform);
process->path = "nvram";
process->argv = argv;
param_list_for_each(platform->params, param) {
char *paramstr;
if (!param->modified)
continue;
paramstr = talloc_asprintf(platform, "%s=%s",
param->name, param->value);
argv[2] = paramstr;
rc = process_run_sync(process);
talloc_free(paramstr);
if (rc || !process_exit_ok(process)) {
rc = -1;
pb_log("nvram update process returned "
"non-zero exit status\n");
break;
}
}
process_release(process);
return rc;
}
static void params_update_all(struct param_list *pl,
const struct config *config, const struct config *defaults)
{
char *tmp = NULL;
const char *val;
if (config->autoboot_enabled == defaults->autoboot_enabled)
val = "";
else
val = config->autoboot_enabled ? "true" : "false";
param_list_set_non_empty(pl, "auto-boot?", val, true);
if (config->autoboot_timeout_sec == defaults->autoboot_timeout_sec)
val = "";
else
val = tmp = talloc_asprintf(pl, "%d",
config->autoboot_timeout_sec);
param_list_set_non_empty(pl, "petitboot,timeout", val, true);
if (tmp)
talloc_free(tmp);
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);
params_update_network_values(pl, "petitboot,network", config);
params_update_bootdev_values(pl, "petitboot,bootdevs", config);
if (config->preboot_check_enabled == defaults->preboot_check_enabled)
val = "";
else
val = config->preboot_check_enabled ? "true" : "false";
param_list_set_non_empty(pl, "petitboot,preboot-check", val, true);
}
static void config_set_ipmi_bootdev(struct config *config, enum ipmi_bootdev bootdev,
bool persistent)
{
config->ipmi_bootdev = bootdev;
config->ipmi_bootdev_persistent = persistent;
if (bootdev == IPMI_BOOTDEV_SAFE)
config->safe_mode = true;
}
static int read_bootdev_sysparam(const char *name, uint8_t *val)
{
uint8_t buf[2];
char path[50];
int fd, rc;
assert(strlen(sysparams_dir) + strlen(name) < sizeof(path));
snprintf(path, sizeof(path), "%s%s", sysparams_dir, 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;
assert(strlen(sysparams_dir) + strlen(name) < sizeof(path));
snprintf(path, sizeof(path), "%s%s", sysparams_dir, 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)),
bool persistent)
{
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);
}
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,
bool persistent __attribute__((unused)))
{
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];
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;
}
if (resp_len != sizeof(resp)) {
pb_log("platform: unexpected length (%d) in "
"boot options response\n", resp_len);
return -1;
}
debug_buf = format_buffer(platform, resp, resp_len);
pb_debug_fn("IPMI get_bootdev response:\n%s\n", debug_buf);
talloc_free(debug_buf);
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 -1;
}
*persistent = resp[3] & 0x40;
*bootdev = (resp[4] >> 2) & 0x0f;
return 0;
}
static int get_ipmi_boot_mailbox_block(struct platform_powerpc *platform,
mbox_t *mailbox, uint8_t block)
{
size_t blocksize = 16;
ipmi_mbox_response_t ipmi_mbox_resp = { .cc = 0xFF };
uint16_t resp_len;
char *debug_buf;
int rc;
uint8_t req[] = {
0x07, /* parameter selector: boot initiator mailbox */
block, /* set selector */
0x00, /* no block selector */
};
size_t ipmi_header_len = sizeof(ipmi_mbox_response_t) - sizeof(mbox_t);
resp_len = sizeof(ipmi_mbox_response_t);
rc = ipmi_transaction(platform->ipmi, IPMI_NETFN_CHASSIS,
IPMI_CMD_CHASSIS_GET_SYSTEM_BOOT_OPTIONS,
req, sizeof(req),
(uint8_t*)&ipmi_mbox_resp, &resp_len,
ipmi_timeout);
if (rc) {
pb_log("platform: error reading IPMI boot options\n");
return -1;
}
if (resp_len > sizeof(ipmi_mbox_response_t)) {
pb_debug("platform: invalid mailbox response size!\n");
return -1;
}
if (resp_len < ipmi_header_len) {
pb_log("platform: unexpected length (%d) in "
"boot options mailbox response\n",
resp_len);
return -1;
}
blocksize = resp_len - ipmi_header_len;
pb_debug_fn("Mailbox block %hu returns only %zu bytes in block\n",
block, blocksize);
debug_buf = format_buffer(platform, (uint8_t*)&ipmi_mbox_resp, resp_len);
pb_debug_fn("IPMI bootdev mailbox block %hu:\n%s\n", block, debug_buf);
talloc_free(debug_buf);
if (ipmi_mbox_resp.cc != 0) {
pb_log("platform: non-zero completion code %d from IPMI req\n",
ipmi_mbox_resp.cc);
return -1;
}
/* check for correct parameter version */
if ((ipmi_mbox_resp.param_version & 0xf) != 0x1) {
pb_log("platform: unexpected version (0x%x) in "
"boot mailbox response\n", ipmi_mbox_resp.param_version);
return -1;
}
/* check for valid paramters */
if (ipmi_mbox_resp.param_valid & 0x80) {
pb_debug("platform: boot mailbox parameters are invalid/locked\n");
return -1;
}
/* check for block number */
if (ipmi_mbox_resp.block_selector != block) {
pb_debug("platform: returned boot mailbox block doesn't match "
"requested\n");
return -1;
}
if (!blocksize) {
pb_debug_fn("block %hu empty\n", block);
return 0;
}
memcpy(mailbox, &ipmi_mbox_resp.mbox, blocksize);
return blocksize;
}
static int get_ipmi_boot_mailbox(struct platform_powerpc *platform,
char **buf)
{
char *mailbox_buffer, *prefix;
mbox_t mailbox;
size_t mailbox_size;
int content_size;
uint8_t i;
mailbox_buffer = NULL;
mailbox_size = 0;
/*
* The BMC may hold up to 255 blocks of data but more likely the number
* will be closer to the minimum of 5 set by the specification and error
* on higher numbers.
*/
for (i = 0; i < UCHAR_MAX; i++) {
uint8_t *boot_opt_data;
int block_size = get_ipmi_boot_mailbox_block(platform, &mailbox, i);
if (block_size < CHASSIS_BOOT_MBOX_IANA_SZ && i == 0) {
/*
* Immediate failure, no blocks read or missing IANA
* number.
*/
return -1;
}
if (block_size < 1) {
/* Error or no bytes read */
break;
}
if (i == 0) {
/*
* The first three bytes of block zero are an IANA
* Enterprise ID number
*/
block_size -= CHASSIS_BOOT_MBOX_IANA_SZ;
boot_opt_data = &mailbox.b0.data;
/* Check IANA matches the IBM number, '2' */
if (mailbox.b0.iana[0] != 0x02 ||
mailbox.b0.iana[1] != 0x00 ||
mailbox.b0.iana[2] != 0x00) {
pb_log_fn("IANA number unrecognised: 0x%x:0x%x:0x%x\n",
mailbox.b0.iana[0],
mailbox.b0.iana[1],
mailbox.b0.iana[2]);
return -1;
}
} else {
boot_opt_data = &mailbox.data;
}
mailbox_buffer = talloc_realloc(platform, mailbox_buffer,
char, mailbox_size + block_size);
if (!mailbox_buffer) {
pb_log_fn("Failed to allocate mailbox buffer\n");
return -1;
}
memcpy(mailbox_buffer + mailbox_size, boot_opt_data, block_size);
mailbox_size += block_size;
}
if (i < 5)
pb_log_fn("Only %hu blocks read, spec requires at least 5.\n"
"Send a bug report to your preferred BMC vendor!\n",
i);
else
pb_debug_fn("%hu blocks read (%zu bytes)\n", i, mailbox_size);
if (mailbox_size < strlen("petitboot,bootdevs="))
return -1;
prefix = talloc_strndup(mailbox_buffer, mailbox_buffer,
strlen("petitboot,bootdevs="));
if (!prefix) {
pb_log_fn("Couldn't check prefix\n");
talloc_free(mailbox_buffer);
return -1;
}
if (strncmp(prefix, "petitboot,bootdevs=",
strlen("petitboot,bootdevs=")) != 0 ) {
/* Empty or garbage */
pb_debug_fn("Buffer looks unconfigured\n");
talloc_free(mailbox_buffer);
*buf = NULL;
return 0;
}
/* Don't include IANA number in buffer */
content_size = mailbox_size - strlen("petitboot,bootdevs=");
*buf = talloc_memdup(platform,
mailbox_buffer + strlen("petitboot,bootdevs="),
content_size + 1);
(*buf)[content_size] = '\0';
talloc_free(mailbox_buffer);
return 0;
}
static int clear_ipmi_boot_mailbox(struct platform_powerpc *platform)
{
uint8_t req[18] = {0}; /* req (2) + blocksize (16) */
uint16_t resp_len;
uint8_t resp[1];
uint8_t i;
int rc;
req[0] = 0x07; /* parameter selector: boot initiator mailbox */
resp_len = sizeof(resp);
for (i = 0; i < UCHAR_MAX; i++) {
req[1] = i; /* set selector */
rc = ipmi_transaction(platform->ipmi, IPMI_NETFN_CHASSIS,
IPMI_CMD_CHASSIS_SET_SYSTEM_BOOT_OPTIONS,
req, sizeof(req),
resp, &resp_len,
ipmi_timeout);
if (rc || resp[0]) {
if (i == 0) {
pb_log_fn("error clearing IPMI boot mailbox, "
"rc %d resp[0] %hu\n",
rc, resp[0]);
return -1;
}
break;
}
}
pb_debug_fn("Cleared %hu blocks\n", i);
return 0;
}
static int set_ipmi_os_boot_sensor(struct platform_powerpc *platform)
{
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;
}
req[0] = sensor_number;
resp_len = sizeof(resp);
ipmi_transaction(platform->ipmi, IPMI_NETFN_SE,
IPMI_CMD_SENSOR_SET,
req, sizeof(req),
resp, &resp_len,
ipmi_timeout); return 0;
return 0;
}
static void get_ipmi_network_override(struct platform_powerpc *platform,
struct config *config)
{
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;
}
if (resp_len < min_len) {
pb_debug("IPMI net response too small\n");
return;
}
if (resp[0] != 0) {
pb_log("platform: non-zero completion code %d from IPMI network req\n",
resp[0]);
return;
}
/* 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;
}
/* Check that the parameters are valid */
if (resp[2] & 0x80) {
pb_debug("platform: network override is invalid/locked\n");
return;
}
/* 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;
}
/* Interpret the rest of the interface config */
rc = parse_ipmi_interface_override(config, &resp[i], resp_len - i);
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");
}
}
static void config_get_active_consoles(struct config *config)
{
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)
{
struct platform_powerpc *platform = to_platform_powerpc(p);
const char *hash;
int rc;
rc = parse_nvram(platform);
if (rc)
pb_log_fn("Failed to parse nvram\n");
/*
* If we have an IPMI mailbox configuration available use it instead of
* the boot order found in NVRAM.
*/
if (platform->get_ipmi_boot_mailbox) {
char *mailbox;
struct param *param;
rc = platform->get_ipmi_boot_mailbox(platform, &mailbox);
if (!rc && mailbox) {
platform->ipmi_mailbox_original_config =
talloc_strdup(
platform,
param_list_get_value(
platform->params, "petitboot,bootdevs"));
param_list_set(platform->params, "petitboot,bootdevs",
mailbox, false);
param = param_list_get_param(platform->params,
"petitboot,bootdevs");
/* Avoid writing this to NVRAM */
param->modified = false;
config->ipmi_bootdev_mailbox = true;
talloc_free(mailbox);
}
}
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);
}
}
if (platform->ipmi)
get_ipmi_network_override(platform, config);
config_get_active_consoles(config);
hash = param_list_get_value(platform->params, "petitboot,password");
if (hash) {
rc = crypt_set_password_hash(platform, hash);
if (rc)
pb_log("Failed to set password hash\n");
}
return 0;
}
static int save_config(struct platform *p, struct config *config)
{
struct platform_powerpc *platform = to_platform_powerpc(p);
struct config *defaults;
struct param *param;
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;
}
if (!config->ipmi_bootdev_mailbox &&
platform->ipmi_mailbox_original_config) {
param = param_list_get_param(platform->params,
"petitboot,bootdevs");
/* Restore old boot order if unmodified */
if (!param->modified) {
param_list_set(platform->params, "petitboot,bootdevs",
platform->ipmi_mailbox_original_config,
false);
param->modified = false;
config_populate_bootdev(config, platform->params);
}
platform->clear_ipmi_boot_mailbox(platform);
talloc_free(platform->ipmi_mailbox_original_config);
platform->ipmi_mailbox_original_config = NULL;
}
defaults = talloc_zero(platform, struct config);
config_set_defaults(defaults);
params_update_all(platform->params, config, defaults);
talloc_free(defaults);
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 bool preboot_check(struct platform *p,
const struct config *config,
const char *image,
char **err_msg)
{
struct platform_powerpc *platform = p->platform_data;
unsigned int *ppc_cap_bitmap = NULL;
bool ultravisor_enabled;
struct stat statbuf;
bool ret = true;
/* check if ultravisor-system is enabled */
ultravisor_enabled = stat("/proc/device-tree/ibm,ultravisor",
&statbuf) == 0;
/* if ultravisor-system is disabled, continue the boot process */
if (!ultravisor_enabled)
return true;
ppc_cap_bitmap = elf_getnote_desc(elf_open_image(image),
POWERPC_ELFNOTE_NAMESPACE,
PPC_ELFNOTE_CAPABILITIES);
if ((ppc_cap_bitmap) && (*ppc_cap_bitmap & PPCCAP_ULTRAVISOR_BIT)) {
pb_debug("kernel capabilities: ultravisor mode found.\n");
} else {
ret = false;
pb_log_fn("kernel capabilities failed:"
" IBM Ultravisor mode is required.\n");
*err_msg = talloc_strdup(platform, "IBM Ultravisor capability"
" not found");
}
free(ppc_cap_bitmap);
/* if preboot_check is disabled, continue the boot process */
if (!config->preboot_check_enabled)
return true;
return ret;
}
static void get_sysinfo_stb(struct platform_powerpc *platform,
struct system_info *sysinfo)
{
char *filename;
unsigned int i;
int rc;
struct {
const char *name;
bool *flag;
} props[] = {
{ "secure-enabled", &sysinfo->stb_fw_enforcing },