Mediatek board 'mt7621' boots successfully on LEDE 4.9 kernel with
'mt7621-initramfs-kernel.bin'.
But when I flash 'squashfs-sysupgrade.bin' to get persistence storage
the image crashes leading to reboot.
Both the images are flashed from u-boot prompt.
SPI-Nor flash is detected successfully but, but kernel fails to detect
'SQUASHFS_MAGIC' with error 'no squashfs found'
Can someone guide me.
Excerpts of the log:
[ 0.000000] Kernel command line: console=ttyS0,57600
root=/dev/mtdblock4 noinitrd rootfstype=squashfs,jffs2
[ 0.610000] m25p80 spi32766.0: mx25l12805d (16384 Kbytes)
[ 0.630000] spi32766.0: parsing partitions cmdlinepart
[ 0.640000] spi32766.0: parsing partitions ofpart
[ 0.640000] 5 ofpart partitions found on MTD device spi32766.0
[ 0.660000] Creating 5 MTD partitions on "spi32766.0":
[ 0.670000] 0x000000000000-0x000000030000 : "Bootloader"
[ 0.680000] 0x000000030000-0x000000040000 : "Config"
[ 0.690000] 0x000000040000-0x000000050000 : "Factory"
[ 0.700000] 0x000000050000-0x000001000000 : "Firmware"
[ 0.710000] 0x0000001cc291-0x000001000000 : "rootfs"
[ 0.720000] mtd: device 4 (rootfs) set to be root filesystem
[ 0.740000] rootfs: @2.parsing partitions 1
[ 0.740000] ------------[ cut here ]------------
[ 0.750000] WARNING: CPU: 0 PID: 1 at drivers/spi/spi-mt7621.c:214
mt7621_spi_transfer_one_message+0x28c/0x61c
[ 0.770000] Modules linked in:
[ 0.780000] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 4.9.20 #0
[ 0.780000] Stack : 00000000 00000000 80517b2a 00000033 803db924
00000000 00000000 80510000
[ 0.780000] 87c3831c 804bd207 804539d0 00000000 00000001
80513824 00000030 00010000
[ 0.780000] 00000001 800696b0 00000001 80510000 804c3144
804c3148 804585fc 87c2b6cc
[ 0.780000] 00000003 800a3d18 00000030 00010000 00000001
00000000 eeeff572 00c2b6cc
[ 0.780000] 00000000 00000000 00000000 00000000 00000000
00000000 00000000 00000000
[ 0.780000] ...
[ 0.780000] Call Trace:
[ 0.780000] [<8000f640>] show_stack+0x50/0x84
[ 0.780000] [<801cf924>] dump_stack+0x84/0xc0
[ 0.780000] [<8002a124>] __warn+0xe4/0x118
[ 0.780000] [<8002a1ec>] warn_slowpath_null+0x1c/0x30
[ 0.780000] [<8028d14c>] mt7621_spi_transfer_one_message+0x28c/0x61c
[ 0.780000] [<8028b7c8>] __spi_pump_messages+0x4d4/0x530
[ 0.780000] [<8028c8d0>] __spi_sync+0x170/0x1b4
[ 0.780000] [<8028c944>] spi_sync+0x30/0x58
[ 0.780000] [<8026aba4>] m25p80_read+0x23c/0x298
[ 0.780000] [<80274920>] spi_nor_read+0xc0/0x174
[ 0.780000] [<8025cfa8>] part_read+0x60/0xb0
[ 0.780000] [<8025a494>] mtd_read+0x7c/0xc4
[ 0.780000] [<80260678>] mtd_get_squashfs_len+0x48/0x10c
[ 0.780000] [<80260b20>] mtdsplit_parse_squashfs+0x30/0x1e0
[ 0.780000] [<8025e314>] parse_mtd_partitions_by_type+0x100/0x170
[ 0.780000] [<8025e6e4>] run_parsers_by_type+0x24/0xcc
[ 0.780000] [<8025e4e8>] mtd_partition_split.part.0+0x5c/0xd0
[ 0.780000] [<8025e884>] add_mtd_partitions+0xf8/0x15c
[ 0.780000] [<8025aacc>] mtd_device_parse_register+0x120/0x1f8
[ 0.780000] [<8026a7b8>] m25p_probe+0x13c/0x160
[ 0.780000] [<802486e4>] driver_probe_device+0x140/0x290
[ 0.780000] [<80246bb0>] bus_for_each_drv+0xa0/0xb0
[ 0.780000] [<80248530>] __device_attach+0x8c/0xe4
[ 0.780000] [<80247aa8>] bus_probe_device+0x3c/0xb0
[ 0.780000] [<80245bf4>] device_add+0x468/0x560
[ 0.780000] [<8028a770>] spi_add_device+0x118/0x16c
[ 0.780000] [<8028c050>] spi_register_master+0x4dc/0x77c
[ 0.780000] [<8024a124>] platform_drv_probe+0x40/0x88
[ 0.780000] [<802486e4>] driver_probe_device+0x140/0x290
[ 0.780000] [<802488c0>] __driver_attach+0x8c/0xc4
[ 0.780000] [<80246aec>] bus_for_each_dev+0x9c/0xac
[ 0.780000] [<80247d28>] bus_add_driver+0xec/0x20c
[ 0.780000] [<80249038>] driver_register+0xa8/0xf8
[ 0.780000] [<80005658>] do_one_initcall+0xdc/0x1a4
[ 0.780000] [<804ddd84>] kernel_init_freeable+0x180/0x240
[ 0.780000] [<803c220c>] kernel_init+0x10/0x114
[ 0.780000] [<8000a318>] ret_from_kernel_thread+0x14/0x1c
[ 1.250000] ---[ end trace 7ece3e8c99132699 ]---
[ 1.260000] mtdsplit: -5, error occured while reading from "rootfs"
[ 1.270000] libphy: Fixed MDIO Bus: probed
[ 1.280000] netif_napi_add() called with weight 128 on device eth%d
[ 1.300000] libphy: mdio: probed
[ 2.710000] mtk_soc_eth 1e100000.ethernet: loaded mt7530 driver
[ 2.720000] mtk_soc_eth 1e100000.ethernet eth0: mediatek frame
engine at 0xbe100000, irq 16
[ 2.740000] Netfilter messages via NETLINK v0.30.
[ 2.750000] nf_conntrack version 0.5.0 (2048 buckets, 8192 max)
[ 2.760000] NET: Registered protocol family 10
[ 2.770000] NET: Registered protocol family 17
[ 2.780000] 8021q: 802.1Q VLAN Support v1.8
[ 2.790000] hctosys: unable to open rtc device (rtc0)
[ 2.800000] ------------[ cut here ]------------
[ 2.810000] WARNING: CPU: 1 PID: 291 at
drivers/spi/spi-mt7621.c:214
mt7621_spi_transfer_one_message+0x28c/0x61c
[ 2.830000] Modules linked in:
[ 2.840000] CPU: 1 PID: 291 Comm: kworker/1:1 Tainted: G W
4.9.20 #0
[ 2.850000] Workqueue: mtdblock4 mtd_blktrans_work
[ 2.860000] Stack : 87de9880 804c0000 804539d0 8047c3b0 00000009
000000d6 00000200 00010000
[ 2.880000] 00000001 800696b0 804539d0 00000001 00000123
80513824 8045393c 87e45a64
[ 2.900000] 804c0000 800a3d18 00000001 80510000 804c3144
804c3148 804585fc 87e45a64
[ 2.910000] 804c0000 80041324 00000200 87e45a9c 000001e7
00000000 f1faec76 00e45a84
[ 2.930000] 80261f24 81122c00 87d70b00 6264746d 6b636f6c
00000034 00000000 00000000
[ 2.950000] ...
[ 2.950000] Call Trace:
[ 2.960000] [<8000f640>] show_stack+0x50/0x84
[ 2.960000] [<801cf924>] dump_stack+0x84/0xc0
[ 2.970000] [<8002a124>] __warn+0xe4/0x118
[ 2.980000] [<8002a1ec>] warn_slowpath_null+0x1c/0x30
[ 2.990000] [<8028d14c>] mt7621_spi_transfer_one_message+0x28c/0x61c
[ 3.000000] [<8028b7c8>] __spi_pump_messages+0x4d4/0x530
[ 3.010000] [<8028c8d0>] __spi_sync+0x170/0x1b4
[ 3.020000] [<8028c944>] spi_sync+0x30/0x58
[ 3.030000] [<8026aba4>] m25p80_read+0x23c/0x298
[ 3.040000] [<80274920>] spi_nor_read+0xc0/0x174
[ 3.050000] [<8025cfa8>] part_read+0x60/0xb0
[ 3.060000] [<8025a494>] mtd_read+0x7c/0xc4
[ 3.070000] [<80263618>] mtdblock_readsect+0xf8/0x150
[ 3.080000] [<802621b4>] mtd_blktrans_work+0x290/0x404
[ 3.090000] [<8003f15c>] process_one_work+0x200/0x348
[ 3.100000] [<80040048>] worker_thread+0x2d4/0x45c
[ 3.110000] [<80044b98>] kthread+0xd8/0xec
[ 3.110000] [<8000a318>] ret_from_kernel_thread+0x14/0x1c
[ 3.130000] ---[ end trace 7ece3e8c9913269b ]---
[ 3.130000] blk_update_request: I/O error, dev mtdblock4, sector 0
[ 3.150000] SQUASHFS error: squashfs_read_data failed to read block 0x0
[ 3.160000] squashfs: SQUASHFS error: unable to read squashfs_super_block
[ 3.170000] VFS: Cannot open root device "mtdblock4" or
unknown-block(31,4): error -5
[ 3.190000] Please append a correct "root=" boot option; here are
the available partitions:
[ 3.210000] 1f00 192 mtdblock0 [ 3.210000] (driver?)
[ 3.220000] 1f01 64 mtdblock1 [ 3.230000] (driver?)
[ 3.230000] 1f02 64 mtdblock2 [ 3.240000] (driver?)
[ 3.240000] 1f03 16064 mtdblock3 [ 3.250000] (driver?)
[ 3.260000] 1f04 14543 mtdblock4 [ 3.260000] (driver?)
[ 3.270000] Kernel panic - not syncing: VFS: Unable to mount root
fs on unknown-block(31,4)
[ 3.270000] Rebooting in 1 seconds..
target/linux/ramips/image/mt7621.mk
define Device/mt7621
DTS := MT7621
BLOCKSIZE := 64k
FILESYSTEMS := squashfs
IMAGE_SIZE := $(ralink_default_fw_size_8M)
DEVICE_TITLE := MediaTek MT7621 EVB
endef
TARGET_DEVICES += mt7621
Regards
Mani
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