#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[] = {
return write_nvram(platform);
}
-static void set_exclusive_devtype(struct config *config,
- enum device_type devtype)
+static void set_ipmi_bootdev(struct config *config, enum ipmi_bootdev bootdev,
+ bool persistent)
{
- 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;
-}
+ config->ipmi_bootdev = bootdev;
+ config->ipmi_bootdev_persistent = persistent;
-/* bootdev options that we recognise */
-enum ipmi_bootdev {
- IPMI_BOOTDEV_NONE = 0x00,
- IPMI_BOOTDEV_NETWORK = 0x01,
- IPMI_BOOTDEV_DISK = 0x2,
- IPMI_BOOTDEV_SAFE = 0x3,
- IPMI_BOOTDEV_CDROM = 0x5,
- IPMI_BOOTDEV_SETUP = 0x6,
-};
+ 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)
{
pb_debug("powerpc: sysparam %s: 0x%02x\n", name, buf[0]);
- switch (buf[0]) {
- default:
+ if (!ipmi_bootdev_is_valid(buf[0]))
return -1;
- case IPMI_BOOTDEV_NONE:
- case IPMI_BOOTDEV_NETWORK:
- case IPMI_BOOTDEV_DISK:
- case IPMI_BOOTDEV_SAFE:
- case IPMI_BOOTDEV_CDROM:
- case IPMI_BOOTDEV_SETUP:
- *val = buf[0];
- }
+ *val = buf[0];
return 0;
}
return rc;
}
-static void parse_opal_sysparams(struct config *config)
+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;
/* nothing valid? no need to change the config */
if (!next_valid && !default_valid)
- return;
+ return -1;
- if (next_valid) {
- /* invalidate next-boot-device setting */
- write_bootdev_sysparam("next-boot-device", 0xff);
- } else {
- next_bootdev = default_bootdev;
+ *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;
}
- 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;
- case IPMI_BOOTDEV_SAFE:
- config->autoboot_enabled = false;
- config->safe_mode = true;
- break;
+ 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);
- parse_opal_sysparams(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;
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",
- .dhcp_arch_id = 0x000e,
- .probe = probe,
- .load_config = load_config,
- .save_config = save_config,
- .get_sysinfo = get_sysinfo,
+ .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);