X-Git-Url: https://git.ozlabs.org/?p=petitboot;a=blobdiff_plain;f=discover%2Fplatform-powerpc.c;h=7c34939f14197ae4dd84052b8f155f7ecf8829d1;hp=e2a86318f84803905c0bccc07519499410646a2b;hb=4d5a57a73cbfa29ad2c8672f157294f733726f90;hpb=c14b12980885edd035322cd3bc87efff444c39b1

diff --git a/discover/platform-powerpc.c b/discover/platform-powerpc.c
index e2a8631..7c34939 100644
--- a/discover/platform-powerpc.c
+++ b/discover/platform-powerpc.c
@@ -1,10 +1,15 @@
 
+#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>
@@ -13,6 +18,8 @@
 #include "platform.h"
 
 static const char *partition = "common";
+static const char *sysparams_dir = "/sys/firmware/opal/sysparams/";
+static const char *devtree_dir = "/proc/device-tree/";
 
 struct param {
 	char			*name;
@@ -29,6 +36,9 @@ static const char *known_params[] = {
 	"auto-boot?",
 	"petitboot,network",
 	"petitboot,timeout",
+	"petitboot,bootdev",
+	"petitboot,language",
+	"petitboot,debug?",
 	NULL,
 };
 
@@ -339,8 +349,8 @@ static int parse_one_dns_config(struct config *config,
 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");
@@ -350,7 +360,7 @@ static void populate_network_config(struct platform_powerpc *platform,
 	val = talloc_strdup(config, cval);
 
 	for (i = 0; ; i++) {
-		char *tok, *saveptr;
+		char *tok;
 
 		tok = strtok_r(i == 0 ? val : NULL, " ", &saveptr);
 		if (!tok)
@@ -366,6 +376,32 @@ static void populate_network_config(struct platform_powerpc *platform,
 	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)
 {
@@ -388,7 +424,17 @@ static void populate_config(struct platform_powerpc *platform,
 		}
 	}
 
+	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)
@@ -476,6 +522,21 @@ static void update_network_config(struct platform_powerpc *platform,
 	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)
 {
@@ -498,11 +559,165 @@ static int update_config(struct platform_powerpc *platform,
 	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_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_SAFE = 0x3,
+	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_SAFE:
+	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)
+		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;
+	case IPMI_BOOTDEV_SAFE:
+		config->autoboot_enabled = false;
+		config->safe_mode = true;
+		break;
+	}
+}
+
 static int load_config(struct platform *p, struct config *config)
 {
 	struct platform_powerpc *platform = to_platform_powerpc(p);
@@ -514,6 +729,8 @@ static int load_config(struct platform *p, struct config *config)
 
 	populate_config(platform, config);
 
+	parse_opal_sysparams(config);
+
 	return 0;
 }
 
@@ -532,9 +749,46 @@ static int save_config(struct platform *p, struct config *config)
 	return rc;
 }
 
+static void finalise_config(struct platform *platform __attribute__((unused)))
+{
+	/* invalidate next-boot-device setting */
+	write_bootdev_sysparam("next-boot-device", 0xff);
+}
+
+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);
@@ -543,11 +797,15 @@ static bool probe(struct platform *p, void *ctx)
 	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,
+	.finalise_config	= finalise_config,
+	.get_sysinfo		= get_sysinfo,
 };
 
 register_platform(platform_powerpc);