AMLOGIC G12B w400 buildroot dts
M: liangzhuo xie <liangzhuo.xie@amlogic.com>
F: arch/arm64/boot/dts/amlogic/g12b_a311d_w400_buildroot.dts
+
+AMLOGIC P PARTITION DTSI
+M: Xindong Xu <xindong.xu@amlogic.com>
+F: arch/arm64/boot/dts/amlogic/firmware_avb.dtsi
+F: arch/arm64/boot/dts/amlogic/firmware_normal.dtsi
+F: arch/arm64/boot/dts/amlogic/partition_mbox_normal_P_32.dtsi
+F: arch/arm64/boot/dts/amlogic/partition_mbox_normal_P_64.dtsi
+F: arch/arm64/boot/dts/amlogic/partition_mbox_p241_P.dtsi
--- /dev/null
+/*
+ * Amlogic partition set for normal
+ *
+ * Copyright (c) 2017-2017 Amlogic Ltd
+ *
+ * This file is licensed under a dual GPLv2 or BSD license.
+ *
+ */
+/ {
+ firmware {
+ android {
+ compatible = "android,firmware";
+ vbmeta {
+ compatible = "android,vbmeta";
+ parts = "vbmeta,boot,system,vendor";
+ by_name_prefix="/dev/block";
+ };
+ fstab {
+ compatible = "android,fstab";
+ system {
+ compatible = "android,system";
+ dev = "/dev/block/system";
+ type = "ext4";
+ mnt_flags = "ro,barrier=1,inode_readahead_blks=8";
+ fsmgr_flags = "wait,avb";
+ };
+
+ vendor {
+ compatible = "android,vendor";
+ dev = "/dev/block/vendor";
+ type = "ext4";
+ mnt_flags = "ro,barrier=1,inode_readahead_blks=8";
+ fsmgr_flags = "wait,avb";
+ };
+ odm {
+ compatible = "android,odm";
+ dev = "/dev/block/odm";
+ type = "ext4";
+ mnt_flags = "ro,barrier=1,inode_readahead_blks=8";
+ fsmgr_flags = "wait";
+ };
+ product {
+ compatible = "android,product";
+ dev = "/dev/block/product";
+ type = "ext4";
+ mnt_flags = "ro,barrier=1,inode_readahead_blks=8";
+ fsmgr_flags = "wait";
+ };
+ };
+ };
+ };
+};/* end of / */
--- /dev/null
+/*
+ * Amlogic partition set for normal
+ *
+ * Copyright (c) 2017-2017 Amlogic Ltd
+ *
+ * This file is licensed under a dual GPLv2 or BSD license.
+ *
+ */
+/ {
+ firmware {
+ android {
+ compatible = "android,firmware";
+ vbmeta {
+ compatible = "android,vbmeta";
+ parts = "vbmeta,boot,system,vendor";
+ by_name_prefix="/dev/block";
+ };
+ fstab {
+ compatible = "android,fstab";
+ system {
+ compatible = "android,system";
+ dev = "/dev/block/system";
+ type = "ext4";
+ mnt_flags = "ro,barrier=1,inode_readahead_blks=8";
+ fsmgr_flags = "wait";
+ };
+
+ vendor {
+ compatible = "android,vendor";
+ dev = "/dev/block/vendor";
+ type = "ext4";
+ mnt_flags = "ro,barrier=1,inode_readahead_blks=8";
+ fsmgr_flags = "wait";
+ };
+ odm {
+ compatible = "android,odm";
+ dev = "/dev/block/odm";
+ type = "ext4";
+ mnt_flags = "ro,barrier=1,inode_readahead_blks=8";
+ fsmgr_flags = "wait";
+ };
+ product {
+ compatible = "android,product";
+ dev = "/dev/block/product";
+ type = "ext4";
+ mnt_flags = "ro,barrier=1,inode_readahead_blks=8";
+ fsmgr_flags = "wait";
+ };
+ };
+ };
+ };
+};/* end of / */
*/
/ {
partitions: partitions{
- parts = <16>;
+ parts = <18>;
part-0 = <&logo>;
part-1 = <&boot_a>;
part-2 = <&misc>;
part-4 = <&cri_data>;
part-5 = <¶m>;
part-6 = <&boot_b>;
- part-7 = <&rsv>;
- part-8 = <&tee>;
- part-9 = <&vendor_a>;
- part-10 = <&vendor_b>;
- part-11 = <&odm_a>;
- part-12 = <&odm_b>;
- part-13 = <&system_a>;
- part-14 = <&system_b>;
- part-15 = <&data>;
+ part-7 = <&vbmeta_a>;
+ part-8 = <&vbmeta_b>;
+ part-9 = <&rsv>;
+ part-10 = <&tee>;
+ part-11 = <&vendor_a>;
+ part-12 = <&vendor_b>;
+ part-13 = <&odm_a>;
+ part-14 = <&odm_b>;
+ part-15 = <&system_a>;
+ part-16 = <&system_b>;
+ part-17 = <&data>;
logo:logo{
pname = "logo";
size = <0x0 0x800000>;
mask = <2>;
};
+ vbmeta_a:vbmeta_a{
+ pname = "vbmeta_a";
+ size = <0x0 0x100000>;
+ mask = <1>;
+ };
+ vbmeta_b:vbmeta_b{
+ pname = "vbmeta_b";
+ size = <0x0 0x100000>;
+ mask = <1>;
+ };
rsv:rsv{
pname = "rsv";
- size = <0x0 0x1000000>;
+ size = <0x0 0xE00000>;
mask = <1>;
};
param:param{
--- /dev/null
+/*
+ * Amlogic partition set for normal
+ *
+ * Copyright (c) 2017-2017 Amlogic Ltd
+ *
+ * This file is licensed under a dual GPLv2 or BSD license.
+ *
+ */
+/ {
+ partitions: partitions{
+ parts = <18>;
+ part-0 = <&logo>;
+ part-1 = <&boot_a>;
+ part-2 = <&misc>;
+ part-3 = <&dto>;
+ part-4 = <&cri_data>;
+ part-5 = <¶m>;
+ part-6 = <&boot_b>;
+ part-7 = <&vbmeta_a>;
+ part-8 = <&vbmeta_b>;
+ part-9 = <&rsv>;
+ part-10 = <&tee>;
+ part-11 = <&vendor_a>;
+ part-12 = <&vendor_b>;
+ part-13 = <&odm_a>;
+ part-14 = <&odm_b>;
+ part-15 = <&system_a>;
+ part-16 = <&system_b>;
+ part-17 = <&data>;
+
+ logo:logo{
+ pname = "logo";
+ size = <0x0 0x800000>;
+ mask = <1>;
+ };
+ boot_a:boot_a{
+ pname = "boot_a";
+ size = <0x0 0x1000000>;
+ mask = <1>;
+ };
+ misc:misc{
+ pname = "misc";
+ size = <0x0 0x800000>;
+ mask = <1>;
+ };
+ dto:dto{
+ pname = "dto";
+ size = <0x0 0x800000>;
+ mask = <1>;
+ };
+ cri_data:cri_data
+ {
+ pname = "cri_data";
+ size = <0x0 0x800000>;
+ mask = <2>;
+ };
+ vbmeta_a:vbmeta_a{
+ pname = "vbmeta_a";
+ size = <0x0 0x100000>;
+ mask = <1>;
+ };
+ vbmeta_b:vbmeta_b{
+ pname = "vbmeta_b";
+ size = <0x0 0x100000>;
+ mask = <1>;
+ };
+ rsv:rsv{
+ pname = "rsv";
+ size = <0x0 0xE00000>;
+ mask = <1>;
+ };
+ param:param{
+ pname = "param";
+ size = <0x0 0x1000000>;
+ mask = <2>;
+ };
+ boot_b:boot_b
+ {
+ pname = "boot_b";
+ size = <0x0 0x1000000>;
+ mask = <1>;
+ };
+ tee:tee{
+ pname = "tee";
+ size = <0x0 0x2000000>;
+ mask = <1>;
+ };
+ vendor_a:vendor_a
+ {
+ pname = "vendor_a";
+ size = <0x0 0x10000000>;
+ mask = <1>;
+ };
+ vendor_b:vendor_b
+ {
+ pname = "vendor_b";
+ size = <0x0 0x10000000>;
+ mask = <1>;
+ };
+ odm_a:odm_a
+ {
+ pname = "odm_a";
+ size = <0x0 0x10000000>;
+ mask = <1>;
+ };
+ odm_b:odm_b
+ {
+ pname = "odm_b";
+ size = <0x0 0x10000000>;
+ mask = <1>;
+ };
+ system_a:system_a
+ {
+ pname = "system_a";
+ size = <0x0 0x74000000>;
+ mask = <1>;
+ };
+ system_b:system_b
+ {
+ pname = "system_b";
+ size = <0x0 0x74000000>;
+ mask = <1>;
+ };
+ data:data
+ {
+ pname = "data";
+ size = <0xffffffff 0xffffffff>;
+ mask = <4>;
+ };
+ };
+
+ firmware {
+ android {
+ compatible = "android,firmware";
+ vbmeta {
+ compatible = "android,vbmeta";
+ parts = "vbmeta,boot,system,vendor";
+ by_name_prefix="/dev/block";
+ };
+ fstab {
+ compatible = "android,fstab";
+ system {
+ compatible = "android,system";
+ dev = "/dev/block/system";
+ type = "ext4";
+ mnt_flags = "ro,barrier=1,inode_readahead_blks=8";
+ fsmgr_flags = "wait,slotselect,avb";
+ };
+
+ vendor {
+ compatible = "android,vendor";
+ dev = "/dev/block/vendor";
+ type = "ext4";
+ mnt_flags = "ro,barrier=1,inode_readahead_blks=8";
+ fsmgr_flags = "wait,slotselect,avb";
+ };
+
+ odm {
+ compatible = "android,odm";
+ dev = "/dev/block/odm";
+ type = "ext4";
+ mnt_flags = "ro,barrier=1,inode_readahead_blks=8";
+ fsmgr_flags = "wait,slotselect";
+ };
+ };
+ };
+ };
+
+};/* end of / */
--- /dev/null
+/*
+ * Amlogic partition set for normal
+ *
+ * Copyright (c) 2017-2017 Amlogic Ltd
+ *
+ * This file is licensed under a dual GPLv2 or BSD license.
+ *
+ */
+
+#include "firmware_normal.dtsi"
+
+/ {
+ partitions: partitions{
+ parts = <17>;
+ part-0 = <&logo>;
+ part-1 = <&recovery>;
+ part-2 = <&misc>;
+ part-3 = <&dto>;
+ part-4 = <&cri_data>;
+ part-5 = <¶m>;
+ part-6 = <&boot>;
+ part-7 = <&rsv>;
+ part-8 = <&metadata>;
+ part-9 = <&vbmeta>;
+ part-10 = <&tee>;
+ part-11 = <&vendor>;
+ part-12 = <&odm>;
+ part-13 = <&system>;
+ part-14 = <&product>;
+ part-15 = <&cache>;
+ part-16 = <&data>;
+
+ logo:logo{
+ pname = "logo";
+ size = <0x0 0x800000>;
+ mask = <1>;
+ };
+ recovery:recovery{
+ pname = "recovery";
+ size = <0x0 0x1800000>;
+ mask = <1>;
+ };
+ misc:misc{
+ pname = "misc";
+ size = <0x0 0x800000>;
+ mask = <1>;
+ };
+ dto:dto{
+ pname = "dto";
+ size = <0x0 0x800000>;
+ mask = <1>;
+ };
+ cri_data:cri_data
+ {
+ pname = "cri_data";
+ size = <0x0 0x800000>;
+ mask = <2>;
+ };
+ rsv:rsv{
+ pname = "rsv";
+ size = <0x0 0x1000000>;
+ mask = <1>;
+ };
+ metadata:metadata{
+ pname = "metadata";
+ size = <0x0 0x1000000>;
+ mask = <1>;
+ };
+ vbmeta:vbmeta{
+ pname = "vbmeta";
+ size = <0x0 0x200000>;
+ mask = <1>;
+ };
+ param:param{
+ pname = "param";
+ size = <0x0 0x1000000>;
+ mask = <2>;
+ };
+ boot:boot
+ {
+ pname = "boot";
+ size = <0x0 0x1000000>;
+ mask = <1>;
+ };
+ tee:tee{
+ pname = "tee";
+ size = <0x0 0x2000000>;
+ mask = <1>;
+ };
+ vendor:vendor
+ {
+ pname = "vendor";
+ size = <0x0 0x10000000>;
+ mask = <1>;
+ };
+ odm:odm
+ {
+ pname = "odm";
+ size = <0x0 0x8000000>;
+ mask = <1>;
+ };
+ system:system
+ {
+ pname = "system";
+ size = <0x0 0x50000000>;
+ mask = <1>;
+ };
+ product:product{
+ pname = "product";
+ size = <0x0 0x8000000>;
+ mask = <1>;
+ };
+ cache:cache
+ {
+ pname = "cache";
+ size = <0x0 0x46000000>;
+ mask = <2>;
+ };
+ data:data
+ {
+ pname = "data";
+ size = <0xffffffff 0xffffffff>;
+ mask = <4>;
+ };
+ };
+};/* end of / */
--- /dev/null
+/*
+ * Amlogic partition set for normal
+ *
+ * Copyright (c) 2017-2017 Amlogic Ltd
+ *
+ * This file is licensed under a dual GPLv2 or BSD license.
+ *
+ */
+
+#include "firmware_normal.dtsi"
+
+/ {
+ partitions: partitions{
+ parts = <17>;
+ part-0 = <&logo>;
+ part-1 = <&recovery>;
+ part-2 = <&misc>;
+ part-3 = <&dto>;
+ part-4 = <&cri_data>;
+ part-5 = <¶m>;
+ part-6 = <&boot>;
+ part-7 = <&rsv>;
+ part-8 = <&metadata>;
+ part-9 = <&vbmeta>;
+ part-10 = <&tee>;
+ part-11 = <&vendor>;
+ part-12 = <&odm>;
+ part-13 = <&system>;
+ part-14 = <&product>;
+ part-15 = <&cache>;
+ part-16 = <&data>;
+
+ logo:logo{
+ pname = "logo";
+ size = <0x0 0x800000>;
+ mask = <1>;
+ };
+ recovery:recovery{
+ pname = "recovery";
+ size = <0x0 0x1800000>;
+ mask = <1>;
+ };
+ misc:misc{
+ pname = "misc";
+ size = <0x0 0x800000>;
+ mask = <1>;
+ };
+ dto:dto{
+ pname = "dto";
+ size = <0x0 0x800000>;
+ mask = <1>;
+ };
+ cri_data:cri_data
+ {
+ pname = "cri_data";
+ size = <0x0 0x800000>;
+ mask = <2>;
+ };
+ rsv:rsv{
+ pname = "rsv";
+ size = <0x0 0x1000000>;
+ mask = <1>;
+ };
+ metadata:metadata{
+ pname = "metadata";
+ size = <0x0 0x1000000>;
+ mask = <1>;
+ };
+ vbmeta:vbmeta{
+ pname = "vbmeta";
+ size = <0x0 0x200000>;
+ mask = <1>;
+ };
+ param:param{
+ pname = "param";
+ size = <0x0 0x1000000>;
+ mask = <2>;
+ };
+ boot:boot
+ {
+ pname = "boot";
+ size = <0x0 0x1000000>;
+ mask = <1>;
+ };
+ tee:tee{
+ pname = "tee";
+ size = <0x0 0x2000000>;
+ mask = <1>;
+ };
+ vendor:vendor
+ {
+ pname = "vendor";
+ size = <0x0 0x10000000>;
+ mask = <1>;
+ };
+ odm:odm
+ {
+ pname = "odm";
+ size = <0x0 0x8000000>;
+ mask = <1>;
+ };
+ system:system
+ {
+ pname = "system";
+ size = <0x0 0x62C00000>;
+ mask = <1>;
+ };
+ product:product{
+ pname = "product";
+ size = <0x0 0x8000000>;
+ mask = <1>;
+ };
+ cache:cache
+ {
+ pname = "cache";
+ size = <0x0 0x46000000>;
+ mask = <2>;
+ };
+ data:data
+ {
+ pname = "data";
+ size = <0xffffffff 0xffffffff>;
+ mask = <4>;
+ };
+ };
+};/* end of / */
--- /dev/null
+/*
+ * Amlogic partition set for normal
+ *
+ * Copyright (c) 2017-2017 Amlogic Ltd
+ *
+ * This file is licensed under a dual GPLv2 or BSD license.
+ *
+ */
+
+#include "firmware_normal.dtsi"
+
+/ {
+ partitions: partitions{
+ parts = <17>;
+ part-0 = <&logo>;
+ part-1 = <&recovery>;
+ part-2 = <&misc>;
+ part-3 = <&dto>;
+ part-4 = <&cri_data>;
+ part-5 = <¶m>;
+ part-6 = <&boot>;
+ part-7 = <&rsv>;
+ part-8 = <&metadata>;
+ part-9 = <&vbmeta>;
+ part-10 = <&tee>;
+ part-11 = <&vendor>;
+ part-12 = <&odm>;
+ part-13 = <&system>;
+ part-14 = <&product>;
+ part-15 = <&cache>;
+ part-16 = <&data>;
+
+ logo:logo{
+ pname = "logo";
+ size = <0x0 0x800000>;
+ mask = <1>;
+ };
+ recovery:recovery{
+ pname = "recovery";
+ size = <0x0 0x1800000>;
+ mask = <1>;
+ };
+ misc:misc{
+ pname = "misc";
+ size = <0x0 0x800000>;
+ mask = <1>;
+ };
+ dto:dto{
+ pname = "dto";
+ size = <0x0 0x800000>;
+ mask = <1>;
+ };
+ cri_data:cri_data
+ {
+ pname = "cri_data";
+ size = <0x0 0x800000>;
+ mask = <2>;
+ };
+ rsv:rsv{
+ pname = "rsv";
+ size = <0x0 0x1000000>;
+ mask = <1>;
+ };
+ metadata:metadata{
+ pname = "metadata";
+ size = <0x0 0x1000000>;
+ mask = <1>;
+ };
+ vbmeta:vbmeta{
+ pname = "vbmeta";
+ size = <0x0 0x200000>;
+ mask = <1>;
+ };
+ param:param{
+ pname = "param";
+ size = <0x0 0x1000000>;
+ mask = <2>;
+ };
+ boot:boot
+ {
+ pname = "boot";
+ size = <0x0 0x1000000>;
+ mask = <1>;
+ };
+ tee:tee{
+ pname = "tee";
+ size = <0x0 0x2000000>;
+ mask = <1>;
+ };
+ vendor:vendor
+ {
+ pname = "vendor";
+ size = <0x0 0x10000000>;
+ mask = <1>;
+ };
+ odm:odm
+ {
+ pname = "odm";
+ size = <0x0 0x8000000>;
+ mask = <1>;
+ };
+ system:system
+ {
+ pname = "system";
+ size = <0x0 0x50000000>;
+ mask = <1>;
+ };
+ product:product{
+ pname = "product";
+ size = <0x0 0x8000000>;
+ mask = <1>;
+ };
+ cache:cache
+ {
+ pname = "cache";
+ size = <0x0 0x25000000>;
+ mask = <2>;
+ };
+ data:data
+ {
+ pname = "data";
+ size = <0xffffffff 0xffffffff>;
+ mask = <4>;
+ };
+ };
+};/* end of / */
CONFIG_DM_VERITY_HASH_PREFETCH_MIN_SIZE=1
CONFIG_DM_VERITY_FEC=y
CONFIG_DM_ANDROID_VERITY=y
+CONFIG_DM_VERITY_AVB=y
CONFIG_NETDEVICES=y
CONFIG_TUN=y
CONFIG_8139CP=y
If unsure, say N.
+config DM_VERITY_AVB
+ tristate "Support AVB specific verity error behavior"
+ depends on DM_VERITY
+ ---help---
+ Enables Android Verified Boot platform-specific error
+ behavior. In particular, it will modify the vbmeta partition
+ specified on the kernel command-line when non-transient error
+ occurs (followed by a panic).
+
+ If unsure, say N.
+
config DM_ANDROID_VERITY
bool "Android verity target support"
depends on DM_VERITY=y
ifeq ($(CONFIG_DM_VERITY_FEC),y)
dm-verity-objs += dm-verity-fec.o
endif
+
+ifeq ($(CONFIG_DM_VERITY_AVB),y)
+dm-verity-objs += dm-verity-avb.o
+endif
--- /dev/null
+/*
+ * Copyright (C) 2017 Google.
+ *
+ * This file is released under the GPLv2.
+ *
+ * Based on drivers/md/dm-verity-chromeos.c
+ */
+
+#include <linux/device-mapper.h>
+#include <linux/module.h>
+#include <linux/mount.h>
+
+#define DM_MSG_PREFIX "verity-avb"
+
+/* Set via module parameters. */
+static char avb_vbmeta_device[64];
+static char avb_invalidate_on_error[4];
+
+static void invalidate_vbmeta_endio(struct bio *bio)
+{
+ if (bio->bi_error)
+ DMERR("invalidate_vbmeta_endio: error %d", bio->bi_error);
+ complete(bio->bi_private);
+}
+
+static int invalidate_vbmeta_submit(struct bio *bio,
+ struct block_device *bdev,
+ int rw, int access_last_sector,
+ struct page *page)
+{
+ DECLARE_COMPLETION_ONSTACK(wait);
+
+ bio->bi_private = &wait;
+ bio->bi_end_io = invalidate_vbmeta_endio;
+ bio->bi_bdev = bdev;
+ bio->bi_iter.bi_sector = 0;
+ if (access_last_sector) {
+ sector_t last_sector;
+
+ last_sector = (i_size_read(bdev->bd_inode)>>SECTOR_SHIFT) - 1;
+ bio->bi_iter.bi_sector = last_sector;
+ }
+ if (!bio_add_page(bio, page, PAGE_SIZE, 0)) {
+ DMERR("invalidate_vbmeta_submit: bio_add_page error");
+ return -EIO;
+ }
+
+ submit_bio(bio);
+ /* Wait up to 2 seconds for completion or fail. */
+ if (!wait_for_completion_timeout(&wait, msecs_to_jiffies(2000)))
+ return -EIO;
+ return 0;
+}
+
+static int invalidate_vbmeta(dev_t vbmeta_devt)
+{
+ int ret = 0;
+ struct block_device *bdev;
+ struct bio *bio;
+ struct page *page;
+ fmode_t dev_mode;
+ /* Ensure we do synchronous unblocked I/O. We may also need
+ * sync_bdev() on completion, but it really shouldn't.
+ */
+ int rw = REQ_SYNC | REQ_SOFTBARRIER | REQ_NOIDLE;
+ int access_last_sector = 0;
+
+ DMINFO("invalidate_vbmeta: acting on device %d:%d",
+ MAJOR(vbmeta_devt), MINOR(vbmeta_devt));
+
+ /* First we open the device for reading. */
+ dev_mode = FMODE_READ | FMODE_EXCL;
+ bdev = blkdev_get_by_dev(vbmeta_devt, dev_mode,
+ invalidate_vbmeta);
+ if (IS_ERR(bdev)) {
+ DMERR("invalidate_kernel: could not open device for reading");
+ dev_mode = 0;
+ ret = -ENOENT;
+ goto failed_to_read;
+ }
+
+ bio = bio_alloc(GFP_NOIO, 1);
+ if (!bio) {
+ ret = -ENOMEM;
+ goto failed_bio_alloc;
+ }
+
+ bio_set_op_attrs(bio, REQ_OP_READ, rw);
+ page = alloc_page(GFP_NOIO);
+ if (!page) {
+ ret = -ENOMEM;
+ goto failed_to_alloc_page;
+ }
+
+ access_last_sector = 0;
+ ret = invalidate_vbmeta_submit(bio, bdev, rw, access_last_sector, page);
+ if (ret) {
+ DMERR("invalidate_vbmeta: error reading");
+ goto failed_to_submit_read;
+ }
+
+ /* We have a page. Let's make sure it looks right. */
+ if (memcmp("AVB0", page_address(page), 4) == 0) {
+ /* Stamp it. */
+ memcpy(page_address(page), "AVE0", 4);
+ DMINFO("invalidate_vbmeta: found vbmeta partition");
+ } else {
+ /* Could be this is on a AVB footer, check. Also, since the
+ * AVB footer is in the last 64 bytes, adjust for the fact that
+ * we're dealing with 512-byte sectors.
+ */
+ size_t offset = (1<<SECTOR_SHIFT) - 64;
+
+ access_last_sector = 1;
+ ret = invalidate_vbmeta_submit(bio, bdev, rw,
+ access_last_sector, page);
+ if (ret) {
+ DMERR("invalidate_vbmeta: error reading");
+ goto failed_to_submit_read;
+ }
+ if (memcmp("AVBf", page_address(page) + offset, 4) != 0) {
+ DMERR("invalidate_vbmeta on non-vbmeta partition");
+ ret = -EINVAL;
+ goto invalid_header;
+ }
+ /* Stamp it. */
+ memcpy(page_address(page) + offset, "AVE0", 4);
+ DMINFO("invalidate_vbmeta: found vbmeta footer partition");
+ }
+
+ /* Now rewrite the changed page - the block dev was being
+ * changed on read. Let's reopen here.
+ */
+ blkdev_put(bdev, dev_mode);
+ dev_mode = FMODE_WRITE | FMODE_EXCL;
+ bdev = blkdev_get_by_dev(vbmeta_devt, dev_mode,
+ invalidate_vbmeta);
+ if (IS_ERR(bdev)) {
+ DMERR("invalidate_vbmeta: could not open device for writing");
+ dev_mode = 0;
+ ret = -ENOENT;
+ goto failed_to_write;
+ }
+
+ /* We re-use the same bio to do the write after the read. Need to reset
+ * it to initialize bio->bi_remaining.
+ */
+ bio_reset(bio);
+
+ bio_set_op_attrs(bio, REQ_OP_WRITE, rw);
+ ret = invalidate_vbmeta_submit(bio, bdev, rw, access_last_sector, page);
+ if (ret) {
+ DMERR("invalidate_vbmeta: error writing");
+ goto failed_to_submit_write;
+ }
+
+ DMERR("invalidate_vbmeta: completed.");
+ ret = 0;
+failed_to_submit_write:
+failed_to_write:
+invalid_header:
+ __free_page(page);
+failed_to_submit_read:
+ /* Technically, we'll leak a page with the pending bio, but
+ * we're about to reboot anyway.
+ */
+failed_to_alloc_page:
+ bio_put(bio);
+failed_bio_alloc:
+ if (dev_mode)
+ blkdev_put(bdev, dev_mode);
+failed_to_read:
+ return ret;
+}
+
+void dm_verity_avb_error_handler(void)
+{
+ dev_t dev;
+
+ DMINFO("AVB error handler called for %s", avb_vbmeta_device);
+
+ if (strcmp(avb_invalidate_on_error, "yes") != 0) {
+ DMINFO("Not configured to invalidate");
+ return;
+ }
+
+ if (avb_vbmeta_device[0] == '\0') {
+ DMERR("avb_vbmeta_device parameter not set");
+ goto fail_no_dev;
+ }
+
+ dev = name_to_dev_t(avb_vbmeta_device);
+ if (!dev) {
+ DMERR("No matching partition for device: %s",
+ avb_vbmeta_device);
+ goto fail_no_dev;
+ }
+
+ invalidate_vbmeta(dev);
+
+fail_no_dev:
+ ;
+}
+
+static int __init dm_verity_avb_init(void)
+{
+ DMINFO("AVB error handler initialized with vbmeta device: %s",
+ avb_vbmeta_device);
+ return 0;
+}
+
+static void __exit dm_verity_avb_exit(void)
+{
+}
+
+module_init(dm_verity_avb_init);
+module_exit(dm_verity_avb_exit);
+
+MODULE_AUTHOR("David Zeuthen <zeuthen@google.com>");
+MODULE_DESCRIPTION("AVB-specific error handler for dm-verity");
+MODULE_LICENSE("GPL");
+
+/* Declare parameter with no module prefix */
+#undef MODULE_PARAM_PREFIX
+#define MODULE_PARAM_PREFIX "androidboot.vbmeta."
+module_param_string(device, avb_vbmeta_device, sizeof(avb_vbmeta_device), 0000);
+module_param_string(invalidate_on_error, avb_invalidate_on_error,
+ sizeof(avb_invalidate_on_error), 0000);
if (v->mode == DM_VERITY_MODE_LOGGING)
return 0;
- if (v->mode == DM_VERITY_MODE_RESTART)
+ if (v->mode == DM_VERITY_MODE_RESTART) {
+#ifdef CONFIG_DM_VERITY_AVB
+ dm_verity_avb_error_handler();
+#endif
kernel_restart("dm-verity device corrupted");
+ }
return 1;
}
extern void verity_dtr(struct dm_target *ti);
extern int verity_ctr(struct dm_target *ti, unsigned argc, char **argv);
extern int verity_map(struct dm_target *ti, struct bio *bio);
+extern void dm_verity_avb_error_handler(void);
#endif /* DM_VERITY_H */
projects / GitHub / LineageOS / G12 / android_kernel_amlogic_linux-4.9.git / commitdiff