From: Christian Lamparter Date: Tue, 27 Mar 2018 17:42:18 +0000 (+0200) Subject: brcm2708: add squashfs rootfs image X-Git-Url: http://git.cdn.openwrt.org/?a=commitdiff_plain;h=707b6c815bba34e9783d2695020bb17385fdcf1d;p=openwrt%2Fstaging%2Fjow.git brcm2708: add squashfs rootfs image This patch adds a image with squashfs as the root filesystem. A rootfs_data partition will be generated on the first boot and placed inside the rootfs partition (just after the squashfs image). advantages: - it is possible to migrate from an existing -ext4 installation and back via sysupgrade. - existing partition layout will not be lost. - slightly smaller image size. - support for attendedsysupgrade disadvantages: - needs f2fs + tools as well. This is because fs-tools decides on the blocksize of the sdcard. So either f2fs or ext4 can get choosen as the rootfs_data filesystem (depends on the size of the root partition). - rootfs_data is placed into the rootfs partition. This makes it difficult for tools that expect a /dev/mmc0pX device. It also makes it difficult for data recovery tools since they might not expect to find a embedded partition or will be confused. For people with existing build configurations: make sure to include mkf2fs and f2fsck package into the image... Otherwise the new -squashfs image will boot of a ram-overlay and won't keep the configurations after a reboot. Cc: Álvaro Fernández Rojas Cc: Paul Spooren Cc: Daniel Golle Signed-off-by: Christian Lamparter Acked-by: Daniel Golle --- diff --git a/target/linux/brcm2708/Makefile b/target/linux/brcm2708/Makefile index 244513dfc6..870029c4c8 100644 --- a/target/linux/brcm2708/Makefile +++ b/target/linux/brcm2708/Makefile @@ -10,7 +10,7 @@ include $(TOPDIR)/rules.mk ARCH:=arm BOARD:=brcm2708 BOARDNAME:=Broadcom BCM27xx -FEATURES:=ext4 audio usb usbgadget display gpio fpu +FEATURES:=ext4 audio usb usbgadget display gpio fpu squashfs MAINTAINER:=Álvaro Fernández Rojas SUBTARGETS:=bcm2708 bcm2709 bcm2710 @@ -27,7 +27,8 @@ DEFAULT_PACKAGES += \ kmod-usb-hid \ kmod-sound-core kmod-sound-arm-bcm2835 \ kmod-fs-vfat kmod-nls-cp437 kmod-nls-iso8859-1 \ - brcmfmac-firmware-43430-sdio kmod-brcmfmac wpad-mini + brcmfmac-firmware-43430-sdio kmod-brcmfmac wpad-mini \ + partx-utils mkf2fs e2fsprogs KERNELNAME:=Image dtbs diff --git a/target/linux/brcm2708/bcm2708/config-4.9 b/target/linux/brcm2708/bcm2708/config-4.9 index dccf85fac3..116dd257dd 100644 --- a/target/linux/brcm2708/bcm2708/config-4.9 +++ b/target/linux/brcm2708/bcm2708/config-4.9 @@ -141,6 +141,11 @@ CONFIG_ENABLE_MUST_CHECK=y CONFIG_EXT4_FS=y CONFIG_EXT4_FS_POSIX_ACL=y CONFIG_EXT4_FS_SECURITY=y +# CONFIG_F2FS_CHECK_FS is not set +CONFIG_F2FS_FS=y +# CONFIG_F2FS_FS_SECURITY is not set +CONFIG_F2FS_FS_XATTR=y +CONFIG_F2FS_STAT_FS=y CONFIG_FB=y CONFIG_FB_BCM2708=y CONFIG_FB_CFB_COPYAREA=y @@ -342,7 +347,6 @@ CONFIG_SERIAL_AMBA_PL011_CONSOLE=y CONFIG_SERIAL_OF_PLATFORM=y CONFIG_SG_POOL=y CONFIG_SPARSE_IRQ=y -# CONFIG_SQUASHFS is not set CONFIG_SRCU=y # CONFIG_STRIP_ASM_SYMS is not set CONFIG_SUSPEND=y diff --git a/target/linux/brcm2708/bcm2709/config-4.9 b/target/linux/brcm2708/bcm2709/config-4.9 index 1134f0d113..4e505edced 100644 --- a/target/linux/brcm2708/bcm2709/config-4.9 +++ b/target/linux/brcm2708/bcm2709/config-4.9 @@ -155,6 +155,11 @@ CONFIG_ENABLE_MUST_CHECK=y CONFIG_EXT4_FS=y CONFIG_EXT4_FS_POSIX_ACL=y CONFIG_EXT4_FS_SECURITY=y +# CONFIG_F2FS_CHECK_FS is not set +CONFIG_F2FS_FS=y +# CONFIG_F2FS_FS_SECURITY is not set +CONFIG_F2FS_FS_XATTR=y +CONFIG_F2FS_STAT_FS=y CONFIG_FB=y CONFIG_FB_BCM2708=y CONFIG_FB_CFB_COPYAREA=y @@ -372,7 +377,6 @@ CONFIG_SG_POOL=y CONFIG_SMP=y CONFIG_SMP_ON_UP=y CONFIG_SPARSE_IRQ=y -# CONFIG_SQUASHFS is not set CONFIG_SRCU=y # CONFIG_STRIP_ASM_SYMS is not set CONFIG_SUSPEND=y diff --git a/target/linux/brcm2708/bcm2710/config-4.9 b/target/linux/brcm2708/bcm2710/config-4.9 index 070b709a3b..2f48696d0e 100644 --- a/target/linux/brcm2708/bcm2710/config-4.9 +++ b/target/linux/brcm2708/bcm2710/config-4.9 @@ -160,6 +160,11 @@ CONFIG_ENABLE_MUST_CHECK=y CONFIG_EXT4_FS=y CONFIG_EXT4_FS_POSIX_ACL=y CONFIG_EXT4_FS_SECURITY=y +# CONFIG_F2FS_CHECK_FS is not set +CONFIG_F2FS_FS=y +# CONFIG_F2FS_FS_SECURITY is not set +CONFIG_F2FS_FS_XATTR=y +CONFIG_F2FS_STAT_FS=y CONFIG_FB=y CONFIG_FB_BCM2708=y CONFIG_FB_CFB_COPYAREA=y @@ -388,7 +393,6 @@ CONFIG_SPARSEMEM_MANUAL=y CONFIG_SPARSEMEM_VMEMMAP=y CONFIG_SPARSEMEM_VMEMMAP_ENABLE=y CONFIG_SPARSE_IRQ=y -# CONFIG_SQUASHFS is not set CONFIG_SRCU=y # CONFIG_STRIP_ASM_SYMS is not set CONFIG_SUSPEND=y diff --git a/target/linux/brcm2708/image/Makefile b/target/linux/brcm2708/image/Makefile index 691212de9f..326ef5a0ee 100644 --- a/target/linux/brcm2708/image/Makefile +++ b/target/linux/brcm2708/image/Makefile @@ -47,7 +47,6 @@ endef ### Devices ### define Device/Default - FILESYSTEMS := ext4 KERNEL := kernel-bin | kernel-img KERNEL_IMG := kernel.img IMAGES := sdcard.img.gz diff --git a/target/linux/brcm2708/image/cmdline.txt b/target/linux/brcm2708/image/cmdline.txt index 24f4f0c276..c1099afb00 100644 --- a/target/linux/brcm2708/image/cmdline.txt +++ b/target/linux/brcm2708/image/cmdline.txt @@ -1 +1 @@ -dwc_otg.lpm_enable=0 console=serial0,115200 kgdboc=serial0,115200 console=tty1 root=/dev/mmcblk0p2 rootfstype=ext4 rootwait +dwc_otg.lpm_enable=0 console=serial0,115200 kgdboc=serial0,115200 console=tty1 root=/dev/mmcblk0p2 rootfstype=squashfs,ext4 rootwait