Hello, I was learning about openWRT and trying to get an ipq4019 to work with recent openwrt
I forked : d3e832d6fda8a39e7ec262994f75dac67353dcae and create a DTS file from the templates, tried my build using dhcp/bootm initramfs Kernel, The layout of the flash separate the FIT kernel and the ROOTFS, I extracted ( probably not the best way , below for details ) the hsqs / squashfs part of the factory image, When the device boot the non ramfs KERNEL it crashes like that : [ 1.032721] 0x000000580000-0x000001b80000 : "rootfs" [ 1.037444] mtd: device 9 (rootfs) set to be root filesystem [ 1.042160] 1 squashfs-split partitions found on MTD device rootfs [ 1.047606] 0x000000c00000-0x000001b80000 : "rootfs_data" [ 1.054867] ipq4019-pinctrl 1000000.pinctrl: invalid function mdio0 in map table [ 1.059189] libphy: ipq40xx_mdio: probed [ 1.070582] Unable to handle kernel NULL pointer dereference at virtual address 000000a4 [ 1.070621] pgd = (ptrval) [ 1.078484] [000000a4] *pgd=00000000 [ 1.080973] Internal error: Oops: 5 [#1] SMP ARM [ 1.084699] Modules linked in: [ 1.089302] CPU: 2 PID: 1 Comm: swapper/0 Not tainted 4.19.64 #0 [ 1.092167] Hardware name: Generic DT based system [ 1.098338] PC is at ar40xx_probe+0x308/0x724 [ 1.102932] LR is at ar40xx_probe+0x2fc/0x724 [ 1.107354] pc : [<c0607b8c>] lr : [<c0607b80>] psr: 60000013 [ 1.111698] sp : df449e08 ip : dfb585a4 fp : 00000000 [ 1.117774] r10: df5a4200 r9 : c0b20574 r8 : c0b5f4e4 [ 1.122983] r7 : df5a4210 r6 : dfb779f0 r5 : 00000000 r4 : df7e0040 [ 1.128192] r3 : 00000002 r2 : 00000000 r1 : 00000000 r0 : df7e0040 [ 1.134793] Flags: nZCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment none [ 1.141304] Control: 10c5387d T: 00000051 [ 1.148504] Process swapper/0 (pid: 1, stack limit = 0x(ptrval)) [ 1.154235] Stack: (0xdf449e08 to 0xdf44a000) [ 1.160313] 9e00: 00000000 dfb6f3f8 df5769c0 00000004 00098000 000987ff [ 1.164575] 9e20: dfb77d28 00000200 00000000 00000000 00000000 00000000 0c000000 0c07ffff [ 1.172732] 9e40: dfb77a48 00000200 00000000 00000000 00000000 00000000 c0b20574 df5a4210 [ 1.180893] 9e60: c0b20574 c0b5e858 00000000 00000000 c0b20574 00000000 00000000 c05a6368 [ 1.189053] 9e80: c0b5e854 df5a4210 c0b5e858 c05a4ba8 df5a4210 c0b20574 df5a4244 00000000 [ 1.197213] 9ea0: 00000000 00000062 c0a35c04 c05a4fd0 df5a4210 c0b20574 c05a4f40 c05a3144 [ 1.205371] 9ec0: df407d58 df552db4 c0b20574 df575600 c0b1cde8 c05a4144 c089aa18 ffffe000 [ 1.213533] 9ee0: c0b20574 c0b20574 c0b04c48 ffffe000 c0a1778c c05a56d4 c0b29dc0 c0b04c48 [ 1.221690] 9f00: ffffe000 c03026a4 00000003 00000000 00000000 c0353100 00000000 df449f24 [ 1.229853] 9f20: cccccccd 00000000 c08dbee8 c08a0be8 00000006 00000006 c08658c4 00000000 [ 1.238009] 9f40: c086c214 c0865938 c0a2b83c cccccccd 00000000 00041340 00000007 c0b29dc0 [ 1.246171] 9f60: c0b29dc0 c0a2b834 c0a2b83c c0a35c04 00000000 c0a00eec 00000006 00000006 [ 1.254328] 9f80: 00000000 c0a0058c 00000000 c079621c 00000000 00000000 00000000 00000000 [ 1.262490] 9fa0: 00000000 c0796224 00000000 c03010e8 00000000 00000000 00000000 00000000 [ 1.270647] 9fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 [ 1.278809] 9fe0: 00000000 00000000 00000000 00000000 00000013 00000000 00000000 00000000 [ 1.286984] [<c0607b8c>] (ar40xx_probe) from [<c05a6368>] (platform_drv_probe+0x34/0x70) [ 1.295135] [<c05a6368>] (platform_drv_probe) from [<c05a4ba8>] (really_probe+0x14c/0x2b4) [ 1.303292] [<c05a4ba8>] (really_probe) from [<c05a4fd0>] (__driver_attach+0x90/0xc4) [ 1.311363] [<c05a4fd0>] (__driver_attach) from [<c05a3144>] (bus_for_each_dev+0x48/0x98) [ 1.319264] [<c05a3144>] (bus_for_each_dev) from [<c05a4144>] (bus_add_driver+0xe8/0x200) [ 1.327420] [<c05a4144>] (bus_add_driver) from [<c05a56d4>] (driver_register+0xbc/0xf8) [ 1.335583] [<c05a56d4>] (driver_register) from [<c03026a4>] (do_one_initcall+0x7c/0x184) [ 1.343398] [<c03026a4>] (do_one_initcall) from [<c0a00eec>] (kernel_init_freeable+0x1c4/0x260) [ 1.351731] [<c0a00eec>] (kernel_init_freeable) from [<c0796224>] (kernel_init+0x8/0x114) [ 1.360237] [<c0796224>] (kernel_init) from [<c03010e8>] (ret_from_fork+0x14/0x2c) I do not understand how a (maybe) invalid rootfs could crash the kernel like that especially when the ramfs kernel works fine : [ 1.163653] 0x000000580000-0x000001b80000 : "rootfs" [ 1.168320] mtd: device 9 (rootfs) set to be root filesystem [ 1.173108] 1 squashfs-split partitions found on MTD device rootfs [ 1.178525] 0x000000c00000-0x000001b80000 : "rootfs_data" [ 1.185837] ipq4019-pinctrl 1000000.pinctrl: invalid function mdio0 in map table [ 1.190099] libphy: ipq40xx_mdio: probed [ 1.268444] ESS reset ok! [ 1.301448] ESS reset ok! [ 1.719346] libphy: Fixed MDIO Bus: probed [ 1.824620] i2c /dev entries driver [ 1.824907] i2c_qup 78b7000.i2c: using default clock-frequency 100000 [ 1.834006] NET: Registered protocol family 10 [ 1.836073] Segment Routing with IPv6 [ 1.837977] NET: Registered protocol family 17 [ 1.841834] 8021q: 802.1Q VLAN Support v1.8 [ 1.846005] Registering SWP/SWPB emulation handler [ 1.85675[ 1.878475] Freeing unused kernel memory: 14336K [ 1.927344] Run /init as init process [ 1.959651] init: Console is alive [ 1.959930] init: - watchdog - [ 1.973086] kmodloader: loading kernel modules from /etc/modules-boot.d/ I setup my test like this : I just look for the magic of squash and DD out of the file the data to flash the rootfs partition dd if=/home/toor/release/HD53/bin/targets/ipq40xx/generic/openwrt-ipq40xx-ipq-hd53-squashfs-nand-factory.ubi skip=459264 bs=8 > ./hd53.hsqs I did not find another way to do that, nor I understand how ar40xx_probe is related to rootfs Basically I boot /dev/mtd8 and i put hd53.hsqs in /dev/mtd9, the ~/release/HD53/bin/targets/ipq40xx/generic/openwrt-ipq40xx-ipq-hd53-fit-uImage.itb in /dev/mtd8 and the u-boot tftp boot these file ~/release/HD53/bin/targets/ipq40xx/generic/openwrt-ipq40xx-ipq-hd53-initramfs-fit-uImage.itb TFTP BOOT is fine , booting the openwrt-ipq40xx-ipq-hd53-fit-uImage.itb crashes It's mostly confusing to me. My main question is : did I screw up the rootfs so bad it does, or is there another problem ? Thank you for reading. _______________________________________________ openwrt-devel mailing list openwrt-devel@lists.openwrt.org https://lists.openwrt.org/mailman/listinfo/openwrt-devel
