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authorChristian Lamparter <chunkeey@googlemail.com>2016-10-17 15:59:14 +0200
committerFelix Fietkau <nbd@nbd.name>2016-11-03 11:08:01 +0100
commit5f8f8a366136a07df661e31decce2458357c167a (patch)
treea352879baffc80269aefbb6eae44694c668f7bd9 /package/base-files/files/etc/init.d/boot
parent5e35b4562fb73aaa1c75a3404fed2efb6afe03f8 (diff)
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base-files, mac80211, broadcom-wl: wifi detection and configuration
Currently, the wifi detection script is executed as part of the (early) boot process. Pluggable wifi USB devices, which are inserted at a later time are not automatically detected and therefore they don't show up in LuCI. A user has to deal with wifi detection manually, or restart the router. However, the current "sleep 1" window - which the boot process waits for wifi devices to "settle down" - is too short to detect wifi devices for some routers anyway. For example, this can happen with USB WLAN devices on the WNDR4700. This is because the usb controller needs to load its firmware from UBI and initialize, before it can operate. The issue can be seen on a BT HomeHub 5A as well as soon as the caldata are on an ubi volume. This is because the ath9k card has to be initialized by owl-loader first. Which has to wait for the firmware extraction script to retrieve the pci initialization values inside the caldata. This patch moves the wifi configuration to hotplug scripts. For mac80211, the wifi configuration will now automatically run any time a "ieee80211" device is added. Likewise broadcom-wl's script checks for new "net" devices which have the "wl$NUMBER" moniker. Issues with spawning multiple interface configuration - in case the detection script is run concurrently - have been resolved by using a named section for the initial configuration. Concurrent configuration scripts will now simply overwrite the same existing configuration. A workaround which preserves the "sleep 1" window for just the first boot has been added. This allows the existing brcm47xx boot and mvebu uci-default scripts to correctly setup the initial mac addresses and regulatory domain. And finally, the patch renames the "wifi detect" into "wifi config". As the script no longer produces any output that has to be redirected or appended to the configuration file. Thanks to Martin Blumenstingl for helping with the implementation and testing of the patch. Acked-by: Jo-Philipp Wich <jo@mein.io> Signed-off-by: Mathias Kresin <dev@kresin.me> Signed-off-by: Christian Lamparter <chunkeey@gmail.com> Signed-off-by: Felix Fietkau <nbd@nbd.name>
Diffstat (limited to 'package/base-files/files/etc/init.d/boot')
-rwxr-xr-xpackage/base-files/files/etc/init.d/boot8
1 files changed, 4 insertions, 4 deletions
diff --git a/package/base-files/files/etc/init.d/boot b/package/base-files/files/etc/init.d/boot
index 03b0fa0419..31f245ffc7 100755
--- a/package/base-files/files/etc/init.d/boot
+++ b/package/base-files/files/etc/init.d/boot
@@ -38,10 +38,10 @@ boot() {
/sbin/kmodloader
- # allow wifi modules time to settle
- sleep 1
-
- /sbin/wifi detect
+ [ ! -f /etc/config/wireless ] && {
+ # compat for brcm47xx and mvebu
+ sleep 1
+ }
/bin/config_generate
uci_apply_defaults
generated by cgit v1.2.3 (git 2.25.1) at 2025-10-04 03:44:13 +0000
='#n234'>234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 
--- a/drivers/mtd/Kconfig
+++ b/drivers/mtd/Kconfig
@@ -47,6 +47,16 @@ config MTD_PARTITIONS
 
 if MTD_PARTITIONS
 
+config MTD_ROOTFS_ROOT_DEV
+	bool "Automatically set 'rootfs' partition to be root filesystem"
+	depends on MTD_PARTITIONS
+	default y
+
+config MTD_ROOTFS_SPLIT
+	bool "Automatically split 'rootfs' partition for squashfs"
+	depends on MTD_PARTITIONS
+	default y
+
 config MTD_REDBOOT_PARTS
 	tristate "RedBoot partition table parsing"
 	---help---
--- a/drivers/mtd/mtdpart.c
+++ b/drivers/mtd/mtdpart.c
@@ -29,6 +29,8 @@
 #include <linux/kmod.h>
 #include <linux/mtd/mtd.h>
 #include <linux/mtd/partitions.h>
+#include <linux/root_dev.h>
+#include <linux/magic.h>
 #include <linux/err.h>
 
 /* Our partition linked list */
@@ -48,7 +50,7 @@ struct mtd_part {
  * the pointer to that structure with this macro.
  */
 #define PART(x)  ((struct mtd_part *)(x))
-
+#define IS_PART(mtd) (mtd->read == part_read)
 
 /*
  * MTD methods which simply translate the effective address and pass through
@@ -636,6 +638,155 @@ int mtd_del_partition(struct mtd_info *m
 }
 EXPORT_SYMBOL_GPL(mtd_del_partition);
 
+#ifdef CONFIG_MTD_ROOTFS_SPLIT
+#define ROOTFS_SPLIT_NAME "rootfs_data"
+#define ROOTFS_REMOVED_NAME "<removed>"
+
+struct squashfs_super_block {
+	__le32 s_magic;
+	__le32 pad0[9];
+	__le64 bytes_used;
+};
+
+
+static int split_squashfs(struct mtd_info *master, int offset, int *split_offset)
+{
+	struct squashfs_super_block sb;
+	int len, ret;
+
+	ret = master->read(master, offset, sizeof(sb), &len, (void *) &sb);
+	if (ret || (len != sizeof(sb))) {
+		printk(KERN_ALERT "split_squashfs: error occured while reading "
+			"from \"%s\"\n", master->name);
+		return -EINVAL;
+	}
+
+	if (SQUASHFS_MAGIC != le32_to_cpu(sb.s_magic) ) {
+		printk(KERN_ALERT "split_squashfs: no squashfs found in \"%s\"\n",
+			master->name);
+		*split_offset = 0;
+		return 0;
+	}
+
+	if (le64_to_cpu((sb.bytes_used)) <= 0) {
+		printk(KERN_ALERT "split_squashfs: squashfs is empty in \"%s\"\n",
+			master->name);
+		*split_offset = 0;
+		return 0;
+	}
+
+	len = (u32) le64_to_cpu(sb.bytes_used);
+	len += (offset & 0x000fffff);
+	len +=  (master->erasesize - 1);
+	len &= ~(master->erasesize - 1);
+	len -= (offset & 0x000fffff);
+	*split_offset = offset + len;
+
+	return 0;
+}
+
+static int split_rootfs_data(struct mtd_info *master, struct mtd_info *rpart, const struct mtd_partition *part)
+{
+	struct mtd_partition *dpart;
+	struct mtd_part *slave = NULL;
+	struct mtd_part *spart;
+	int ret, split_offset = 0;
+
+	spart = PART(rpart);
+	ret = split_squashfs(master, spart->offset, &split_offset);
+	if (ret)
+		return ret;
+
+	if (split_offset <= 0)
+		return 0;
+
+	dpart = kmalloc(sizeof(*part)+sizeof(ROOTFS_SPLIT_NAME)+1, GFP_KERNEL);
+	if (dpart == NULL) {
+		printk(KERN_INFO "split_squashfs: no memory for partition \"%s\"\n",
+			ROOTFS_SPLIT_NAME);
+		return -ENOMEM;
+	}
+
+	memcpy(dpart, part, sizeof(*part));
+	dpart->name = (unsigned char *)&dpart[1];
+	strcpy(dpart->name, ROOTFS_SPLIT_NAME);
+
+	dpart->size = rpart->size - (split_offset - spart->offset);
+	dpart->offset = split_offset;
+
+	if (dpart == NULL)
+		return 1;
+
+	printk(KERN_INFO "mtd: partition \"%s\" created automatically, ofs=%llX, len=%llX \n",
+		ROOTFS_SPLIT_NAME, dpart->offset, dpart->size);
+
+	slave = allocate_partition(master, dpart, 0, split_offset);
+	if (IS_ERR(slave))
+		return PTR_ERR(slave);
+	mutex_lock(&mtd_partitions_mutex);
+	list_add(&slave->list, &mtd_partitions);
+	mutex_unlock(&mtd_partitions_mutex);
+
+	add_mtd_device(&slave->mtd);
+
+	rpart->split = &slave->mtd;
+
+	return 0;
+}
+
+static int refresh_rootfs_split(struct mtd_info *mtd)
+{
+	struct mtd_partition tpart;
+	struct mtd_part *part;
+	char *name;
+	//int index = 0;
+	int offset, size;
+	int ret;
+
+	part = PART(mtd);
+
+	/* check for the new squashfs offset first */
+	ret = split_squashfs(part->master, part->offset, &offset);
+	if (ret)
+		return ret;
+
+	if ((offset > 0) && !mtd->split) {
+		printk(KERN_INFO "%s: creating new split partition for \"%s\"\n", __func__, mtd->name);
+		/* if we don't have a rootfs split partition, create a new one */
+		tpart.name = (char *) mtd->name;
+		tpart.size = mtd->size;
+		tpart.offset = part->offset;
+
+		return split_rootfs_data(part->master, &part->mtd, &tpart);
+	} else if ((offset > 0) && mtd->split) {
+		/* update the offsets of the existing partition */
+		size = mtd->size + part->offset - offset;
+
+		part = PART(mtd->split);
+		part->offset = offset;
+		part->mtd.size = size;
+		printk(KERN_INFO "%s: %s partition \"" ROOTFS_SPLIT_NAME "\", offset: 0x%06x (0x%06x)\n",
+			__func__, (!strcmp(part->mtd.name, ROOTFS_SPLIT_NAME) ? "updating" : "creating"),
+			(u32) part->offset, (u32) part->mtd.size);
+		name = kmalloc(sizeof(ROOTFS_SPLIT_NAME) + 1, GFP_KERNEL);
+		strcpy(name, ROOTFS_SPLIT_NAME);
+		part->mtd.name = name;
+	} else if ((offset <= 0) && mtd->split) {
+		printk(KERN_INFO "%s: removing partition \"%s\"\n", __func__, mtd->split->name);
+
+		/* mark existing partition as removed */
+		part = PART(mtd->split);
+		name = kmalloc(sizeof(ROOTFS_SPLIT_NAME) + 1, GFP_KERNEL);
+		strcpy(name, ROOTFS_REMOVED_NAME);
+		part->mtd.name = name;
+		part->offset = 0;
+		part->mtd.size = 0;
+	}
+
+	return 0;
+}
+#endif /* CONFIG_MTD_ROOTFS_SPLIT */
+
 /*
  * This function, given a master MTD object and a partition table, creates
  * and registers slave MTD objects which are bound to the master according to
@@ -652,6 +803,9 @@ int add_mtd_partitions(struct mtd_info *
 	struct mtd_part *slave;
 	uint64_t cur_offset = 0;
 	int i;
+#ifdef CONFIG_MTD_ROOTFS_SPLIT
+	int ret;
+#endif
 
 	printk(KERN_NOTICE "Creating %d MTD partitions on \"%s\":\n", nbparts, master->name);
 
@@ -666,6 +820,21 @@ int add_mtd_partitions(struct mtd_info *
 
 		add_mtd_device(&slave->mtd);
 
+		if (!strcmp(parts[i].name, "rootfs")) {
+#ifdef CONFIG_MTD_ROOTFS_ROOT_DEV
+			if (ROOT_DEV == 0) {
+				printk(KERN_NOTICE "mtd: partition \"rootfs\" "
+					"set to be root filesystem\n");
+				ROOT_DEV = MKDEV(MTD_BLOCK_MAJOR, slave->mtd.index);
+			}
+#endif
+#ifdef CONFIG_MTD_ROOTFS_SPLIT
+			ret = split_rootfs_data(master, &slave->mtd, &parts[i]);
+			/* if (ret == 0)
+			 * 	j++; */
+#endif
+		}
+
 		cur_offset = slave->offset + slave->mtd.size;
 	}
 
@@ -673,6 +842,32 @@ int add_mtd_partitions(struct mtd_info *
 }
 EXPORT_SYMBOL(add_mtd_partitions);
 
+int refresh_mtd_partitions(struct mtd_info *mtd)
+{
+	int ret = 0;
+
+	if (IS_PART(mtd)) {
+		struct mtd_part *part;
+		struct mtd_info *master;
+
+		part = PART(mtd);
+		master = part->master;
+		if (master->refresh_device)
+			ret = master->refresh_device(master);
+	}
+
+	if (!ret && mtd->refresh_device)
+		ret = mtd->refresh_device(mtd);
+
+#ifdef CONFIG_MTD_ROOTFS_SPLIT
+	if (!ret && IS_PART(mtd) && !strcmp(mtd->name, "rootfs"))
+		refresh_rootfs_split(mtd);
+#endif
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(refresh_mtd_partitions);
+
 static DEFINE_SPINLOCK(part_parser_lock);
 static LIST_HEAD(part_parsers);
 
--- a/drivers/mtd/mtdchar.c
+++ b/drivers/mtd/mtdchar.c
@@ -841,6 +841,13 @@ static int mtd_ioctl(struct file *file,
 		file->f_pos = 0;
 		break;
 	}
+#ifdef CONFIG_MTD_PARTITIONS
+	case MTDREFRESH:
+	{
+		ret = refresh_mtd_partitions(mtd);
+		break;
+	}
+#endif
 
 	case OTPGETREGIONCOUNT:
 	case OTPGETREGIONINFO:
--- a/include/linux/mtd/mtd.h
+++ b/include/linux/mtd/mtd.h
@@ -125,6 +125,7 @@ struct nand_ecclayout {
 	struct nand_oobfree oobfree[MTD_MAX_OOBFREE_ENTRIES_LARGE];
 };
 
+struct mtd_info;
 struct mtd_info {
 	u_char type;
 	uint32_t flags;
@@ -277,6 +278,9 @@ struct mtd_info {
 	struct device dev;
 	int usecount;
 
+	int (*refresh_device)(struct mtd_info *mtd);
+	struct mtd_info *split;
+
 	/* If the driver is something smart, like UBI, it may need to maintain
 	 * its own reference counting. The below functions are only for driver.
 	 * The driver may register its callbacks. These callbacks are not
--- a/include/linux/mtd/partitions.h
+++ b/include/linux/mtd/partitions.h
@@ -34,12 +34,14 @@
  * erasesize aligned (e.g. use MTDPART_OFS_NEXTBLK).
  */
 
+struct mtd_partition;
 struct mtd_partition {
 	char *name;			/* identifier string */
 	uint64_t size;			/* partition size */
 	uint64_t offset;		/* offset within the master MTD space */
 	uint32_t mask_flags;		/* master MTD flags to mask out for this partition */
 	struct nand_ecclayout *ecclayout;	/* out of band layout for this partition (NAND only) */
+	int (*refresh_partition)(struct mtd_info *);
 };
 
 #define MTDPART_OFS_NXTBLK	(-2)
@@ -51,6 +53,7 @@ struct mtd_info;
 
 int add_mtd_partitions(struct mtd_info *, const struct mtd_partition *, int);
 int del_mtd_partitions(struct mtd_info *);
+int refresh_mtd_partitions(struct mtd_info *);
 
 /*
  * Functions dealing with the various ways of partitioning the space
--- a/include/mtd/mtd-abi.h
+++ b/include/mtd/mtd-abi.h
@@ -127,6 +127,7 @@ struct otp_info {
 #define MEMWRITEOOB64		_IOWR('M', 21, struct mtd_oob_buf64)
 #define MEMREADOOB64		_IOWR('M', 22, struct mtd_oob_buf64)
 #define MEMISLOCKED		_IOR('M', 23, struct erase_info_user)
+#define MTDREFRESH		_IO('M', 23)
 
 /*
  * Obsolete legacy interface. Keep it in order not to break userspace