First successful loading of Linux kernel but encountering SD card initialization errors. Tested with 16 GB Sandisk card, using saute0212's cva6 fork. On line #597 the board was manually reset using CPU_Reset push button. There seems to be an issue with the SD card used, will test with 4 GB once it arrives.

nexys_video_boot.log

=~=~=~=~=~=~=~=~=~=~=~= PuTTY log 2024.05.15 11:27:12 =~=~=~=~=~=~=~=~=~=~=~=
.Hello World!
init SPI
status: 0x0000000000000025
status: 0x0000000000000025
SPI initialized!
initializing SD... 
SD command cmd0 	response : 01
SD command cmd55 	response : 01
SD command cmd41 	response : 01
SD command cmd55 	response : 01
SD command cmd41 	response : 01
SD command cmd55 	response : 01
SD command cmd41 	response : 00
sd initialized!
gpt partition table header:
	signature:	5452415020494645
	revision:	00010000
	size:		0000005C
	crc_header:	2232D27E
	reserved:	00000000
	current lba:	0000000000000001
	backup lda:	0000000001DACBFF
	partition entries lba:   	0000000000000002
	number partition entries:	00000080
	size partition entries:  	00000080
gpt partition entry 00
	partition type guid:	D5F7127456A1134B81DC867174929325
	partition guid:     	2AA6EC466034724E9B6D19C0B4DFB57F
	first lba:	0000000000000800
	last lba:	0000000000007464
	attributes:	0000000000000000
	name:	000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
gpt partition entry 01
	partition type guid:	AF3DC60F838472478E793D69D8477DE4
	partition guid:     	78DBA74405A2C045B9D9DDBDA647AF6D
	first lba:	0000000000100000
	last lba:	0000000001DACBDE
	attributes:	0000000000000000
	name:	000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
gpt partition entry 02
	partition type guid:	00000000000000000000000000000000
	partition guid:     	00000000000000000000000000000000
	first lba:	0000000000000000
	last lba:	0000000000000000
	attributes:	0000000000000000
	name:	000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
gpt partition entry 03
	partition type guid:	00000000000000000000000000000000
	partition guid:     	00000000000000000000000000000000
	first lba:	0000000000000000
	last lba:	0000000000000000
	attributes:	0000000000000000
	name:	000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
copying boot image ........................... done!
[    0.000000] OF: fdt: Ignoring memory range 0x80000000 - 0x80200000
[    0.000000] Linux version 5.1.0-rc7 (michscha@toscana.ee.ethz.ch) (gcc version 8.2.0 (GCC)) #2 SMP Thu May 30 17:18:43 CEST 2019
[    0.000000] initrd not found or empty - disabling initrd
[    0.000000] Zone ranges:
[    0.000000]   DMA32    [mem 0x0000000080200000-0x000000009fffffff]
[    0.000000]   Normal   empty
[    0.000000] Movable zone start for each node
[    0.000000] Early memory node ranges
[    0.000000]   node   0: [mem 0x0000000080200000-0x000000009fffffff]
[    0.000000] Initmem setup node 0 [mem 0x0000000080200000-0x000000009fffffff]
[    0.000000] software IO TLB: mapped [mem 0x9b8fd000-0x9f8fd000] (64MB)
[    0.000000] elf_hwcap is 0x112d
[    0.000000] percpu: Embedded 15 pages/cpu s24280 r8192 d28968 u61440
[    0.000000] Built 1 zonelists, mobility grouping on.  Total pages: 128775
[    0.000000] Kernel command line: earlyprintk
[    0.000000] Dentry cache hash table entries: 65536 (order: 7, 524288 bytes)
[    0.000000] Inode-cache hash table entries: 32768 (order: 6, 262144 bytes)
[    0.000000] Sorting __ex_table...
[    0.000000] Memory: 436476K/522240K available (3709K kernel code, 226K rwdata, 1046K rodata, 6031K init, 797K bss, 85764K reserved, 0K cma-reserved)
[    0.000000] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=1, Nodes=1
[    0.000000] rcu: Hierarchical RCU implementation.
[    0.000000] rcu: 	RCU event tracing is enabled.
[    0.000000] rcu: 	RCU restricting CPUs from NR_CPUS=8 to nr_cpu_ids=1.
[    0.000000] rcu: RCU calculated value of scheduler-enlistment delay is 10 jiffies.
[    0.000000] rcu: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=1
[    0.000000] NR_IRQS: 0, nr_irqs: 0, preallocated irqs: 0
[    0.000000] plic: mapped 30 interrupts with 1 handlers for 2 contexts.
[    0.000000] riscv_timer_init_dt: Registering clocksource cpuid [0] hartid [0]
[    0.000000] clocksource: riscv_clocksource: mask: 0xffffffffffffffff max_cycles: 0x2e2049cda, max_idle_ns: 440795202628 ns
[    0.000423] sched_clock: 64 bits at 12MHz, resolution 80ns, wraps every 4398046511080ns
[    0.063738] printk: console [hvc0] enabled
[    0.066436] Calibrating delay loop (skipped), value calculated using timer frequency.. 25.00 BogoMIPS (lpj=125000)
[    0.071437] pid_max: default: 32768 minimum: 301
[    0.084617] Mount-cache hash table entries: 1024 (order: 1, 8192 bytes)
[    0.088049] Mountpoint-cache hash table entries: 1024 (order: 1, 8192 bytes)
[    0.126560] *** VALIDATE proc ***
[    0.192992] rcu: Hierarchical SRCU implementation.
[    0.230904] smp: Bringing up secondary CPUs ...
[    0.232953] smp: Brought up 1 node, 1 CPU
[    0.261120] devtmpfs: initialized
[    0.335079] random: get_random_bytes called from setup_net+0x32/0x15c with crng_init=0
[    0.347818] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns
[    0.353277] futex hash table entries: 256 (order: 2, 16384 bytes)
[    0.383947] NET: Registered protocol family 16
[    0.972726] usbcore: registered new interface driver usbfs
[    0.980638] usbcore: registered new interface driver hub
[    0.986006] usbcore: registered new device driver usb
[    1.043761] clocksource: Switched to clocksource riscv_clocksource
[    1.128270] NET: Registered protocol family 2
[    1.169022] tcp_listen_portaddr_hash hash table entries: 256 (order: 0, 4096 bytes)
[    1.173930] TCP established hash table entries: 4096 (order: 3, 32768 bytes)
[    1.179495] TCP bind hash table entries: 4096 (order: 4, 65536 bytes)
[    1.188531] TCP: Hash tables configured (established 4096 bind 4096)
[    1.199550] UDP hash table entries: 256 (order: 1, 8192 bytes)
[    1.204554] UDP-Lite hash table entries: 256 (order: 1, 8192 bytes)
[    1.215834] NET: Registered protocol family 1
[    1.255067] RPC: Registered named UNIX socket transport module.
[    1.257440] RPC: Registered udp transport module.
[    1.259210] RPC: Registered tcp transport module.
[    1.260961] RPC: Registered tcp NFSv4.1 backchannel transport module.
[   24.783795] workingset: timestamp_bits=62 max_order=17 bucket_order=0
[   25.554476] NFS: Registering the id_resolver key type
[   25.557479] Key type id_resolver registered
[   25.559238] Key type id_legacy registered
[   25.561349] nfs4filelayout_init: NFSv4 File Layout Driver Registering...
[   26.156005] io scheduler mq-deadline registered
[   26.158084] io scheduler kyber registered
[   29.922006] Serial: 8250/16550 driver, 4 ports, IRQ sharing disabled
[   30.013353] 10000000.uart: ttyS0 at MMIO 0x10000000 (irq = 1, base_baud = 1562500) is a 16550A
[   31.091396] printk: console [ttyS0] enabled
[   31.179121] xilinx_spi 20000000.xps-spi: at 0x20000000 mapped to 0x(____ptrval____), irq=6
[   31.229368] libphy: Fixed MDIO Bus: probed
[   31.267305] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
[   31.347521] mmc_spi spi0.0: SD/MMC host mmc0, no WP, no poweroff, cd polling
[   31.381738] usbcore: registered new interface driver usbhid
[   31.397058] usbhid: USB HID core driver
[   31.475655] NET: Registered protocol family 10
[   31.567429] Segment Routing with IPv6
[   31.582565] sit: IPv6, IPv4 and MPLS over IPv4 tunneling driver
[   31.639965] NET: Registered protocol family 17
[   31.691212] Key type dns_resolver registered
[   32.398785] Freeing unused kernel memory: 6028K
[   32.411358] This architecture does not have kernel memory protection.
[   32.428172] Run /init as init process
[   32.492095] mmc0: host does not support reading read-only switch, assuming write-enable
[   32.514353] mmc0: new SDHC card on SPI
[   32.623400] mmcblk0: mmc0:0000 SC16G 14.8 GiB 
[   32.970020] mmc0: SPI card removed
[   33.479728] mmc0: error -110 whilst initialising SD card
[   35.095756] mmc0: host does not support reading read-only switch, assuming write-enable
[   35.118601] mmc0: new SDHC card on SPI
[   35.274899] mmcblk0: mmc0:0000 SC16G 14.8 GiB 
[   35.613700]  mmcblk0: unable to read partition table
[   35.693700] mmc0: SPI card removed
[   36.291141] mmc0: host does not support reading read-only switch, assuming write-enable
[   36.313886] mmc0: new SDHC card on SPI
[   36.468499] mmcblk0: mmc0:0000 SC16G 14.8 GiB 
[   36.943900] mmc0: SPI card removed
[   37.574720] mmc0: host does not support reading read-only switch, assuming write-enable
[   37.596890] mmc0: new SDHC card on SPI
[   37.735123] mmcblk0: mmc0:0000 SC16G 14.8 GiB 
[   38.235934] mmc0: SPI card removed
[   38.831751] mmc0: host does not support reading read-only switch, assuming write-enable
[   38.854897] mmc0: new SDHC card on SPI
[   39.015562] mmcblk0: mmc0:0000 SC16G 14.8 GiB 
[   39.280435]  mmcblk0: unable to read partition table
[   39.344003] mmc0: SPI card removed
[   39.947815] mmc0: host does not support reading read-only switch, assuming write-enable
[   39.968943] mmc0: new SDHC card on SPI
[   40.105682] mmcblk0: mmc0:0000 SC16G 14.8 GiB 
Starting logging: [   40.380820]  mmcblk0: unable to read partition table
[   40.419800] mmc0: SPI card removed
[   41.148149] mmc0: host does not support reading read-only switch, assuming write-enable
[   41.170358] mmc0: new SDHC card on SPI
[   41.380054] mmcblk0: mmc0:0000 SC16G 14.8 GiB 
[   41.731772]  mmcblk0: unable to read partition table
[   41.835341] mmc0: SPI card removed
OK
[   42.674518] mmc0: error -110 whilst initialising SD card
Initializing random number generator... [   44.377861] mmc0: error -110 whilst initialising SD card
[   45.187807] random: dd: uninitialized urandom read (512 bytes read)
done.
Starting rpcbind: [   45.921917] mmc0: error -110 whilst initialising SD card
OK
[   47.602647] mmc0: error -110 whilst initialising SD card
ifconfig: SIOCSIFHWADDR: No such device
[   49.205356] mmc0: host does not support reading read-only switch, assuming write-enable
[   49.227497] mmc0: new SDHC card on SPI
[   49.395400] mmcblk0: mmc0:0000 SC16G 14.8 GiB 
[   49.750202]  mmcblk0: unable to read partition table
[   49.826428] mmc0: SPI card removed
[   50.414957] mmc0: host does not support reading read-only switch, assuming write-enable
[   50.437246] mmc0: new SDHC card on SPI
[   50.507831] random: ssh-keygen: uninitialized urandom read (32 bytes read)
[   50.608810] mmcblk0: mmc0:0000 SC16G 14.8 GiB 
Starting sshd: [   51.127721] mmc0: SPI card removed
[   51.697980] mmc0: error -110 whilst initialising SD card
[   51.928289] random: sshd: uninitialized urandom read (32 bytes read)
[   53.224595] mmc0: host does not support reading read-only switch, assuming write-enable
[   53.246146] mmc0: new SDHC card on SPI
[   53.415918] mmcblk0: mmc0:0000 SC16G 14.8 GiB 
[   53.975952] mmc0: SPI card removed
[   54.520803] mmc0: host does not support reading read-only switch, assuming write-enable
[   54.542690] mmc0: new SDHC card on SPI
[   54.725496] mmcblk0: mmc0:0000 SC16G 14.8 GiB 
[   55.094847] mmc0: SPI card removed
[   55.687304] mmc0: error -110 whilst initialising SD card
OK
NFS preparation skipped, OK


Welcome to Buildroot

buildroot login: [   57.235306] mmc0: host does not support reading read-only switch, assuming write-enable
[   57.257053] mmc0: new SDHC card on SPI
[   57.380105] mmcblk0: mmc0:0000 SC16G 14.8 GiB 
[   57.499636]  mmcblk0: unable to read partition table
[   57.531649] mmc0: SPI card removed
[   57.964173] mmc0: host does not support reading read-only switch, assuming write-enable
[   57.985516] mmc0: new SDHC card on SPI
[   58.108587] mmcblk0: mmc0:0000 SC16G 14.8 GiB 
[   58.228810]  mmcblk0: unable to read partition table
[   58.260736] mmc0: SPI card removed
[   58.704483] mmc0: host does not support reading read-only switch, assuming write-enable
[   58.726634] mmc0: new SDHC card on SPI
[   58.853485] mmcblk0: mmc0:0000 SC16G 14.8 GiB 
[   58.981102]  mmcblk0: unable to read partition table
[   59.025115] mmc0: SPI card removed
[   59.424772] mmc0: error -110 whilst initialising SD card
[   60.824095] mmc0: host does not support reading read-only switch, assuming write-enable
[   60.846255] mmc0: new SDHC card on SPI
[   60.972443] mmcblk0: mmc0:0000 SC16G 14.8 GiB 
[   61.224493]  mmcblk0: unable to read partition table
[   61.268561] mmc0: SPI card removed
[   61.678985] mmc0: error -110 whilst initialising SD card
[   63.074210] mmc0: host does not support reading read-only switch, assuming write-enable
[   63.095604] mmc0: new SDHC card on SPI
[   63.222392] mmcblk0: mmc0:0000 SC16G 14.8 GiB 
[   63.345036]  mmcblk0: unable to read partition table
[   63.389014] mmc0: SPI card removed
[   63.814068] mmc0: host does not support reading read-only switch, assuming write-enable
[   63.835507] mmc0: new SDHC card on SPI
[   63.965503] mmcblk0: mmc0:0000 SC16G 14.8 GiB 
[   64.089152]  mmcblk0: unable to read partition table
[   64.133576] mmc0: SPI card removed
[   64.564323] mmc0: host does not support reading read-only switch, assuming write-enable
[   64.585738] mmc0: new SDHC card on SPI
[   64.714832] mmcblk0: mmc0:0000 SC16G 14.8 GiB 
[   64.837367]  mmcblk0: unable to read partition table
[   64.879998] mmc0: SPI card removed
[   65.314209] mmc0: host does not support reading read-only switch, assuming write-enable
[   65.335599] mmc0: new SDHC card on SPI
[   65.456642] mmcblk0: mmc0:0000 SC16G 14.8 GiB 
[   65.697073]  mmcblk0: unable to read partition table
[   65.735558] mmc0: SPI card removed
[   66.164124] mmc0: host does not support reading read-only switch, assuming write-enable
[   66.185511] mmc0: new SDHC card on SPI
[   66.308928] mmcblk0: mmc0:0000 SC16G 14.8 GiB 
[   66.740148] mmc0: SPI card removed
[   67.164196] mmc0: host does not support reading read-only switch, assuming write-enable
[   67.186353] mmc0: new SDHC card on SPI
[   67.308004] mmcblk0: mmc0:0000 SC16G 14.8 GiB 
[   67.819395] mmc0: SPI card removed
[   68.254249] mmc0: host does not support reading read-only switch, assuming write-enable
[   68.275639] mmc0: new SDHC card on SPI
[   68.398368] mmcblk0: mmc0:0000 SC16G 14.8 GiB 
[   68.539845]  mmcblk0: unable to read partition table
[   68.571430] mmc0: SPI card removed
[   69.004790] mmc0: error -110 whilst initialising SD card
[   70.434793] mmc0: host does not support reading read-only switch, assuming write-enable
[   70.456488] mmc0: new SDHC card on SPI
[   70.583306] mmcblk0: mmc0:0000 SC16G 14.8 GiB 
[   70.929770] mmc0: SPI card removed
[   71.354258] mmc0: host does not support reading read-only switch, assuming write-enable
[   71.375634] mmc0: new SDHC card on SPI
[   71.497372] mmcblk0: mmc0:0000 SC16G 14.8 GiB 
[   71.743554]  mmcblk0: unable to read partition table
[   71.787566] mmc0: SPI card removed
[   72.204290] mmc0: host does not support reading read-only switch, assuming write-enable
[   72.225640] mmc0: new SDHC card on SPI
[   72.349043] mmcblk0: mmc0:0000 SC16G 14.8 GiB 
[   72.583626]  mmcblk0: unable to read partition table
[   72.629305] mmc0: SPI card removed
[   73.028014] mmc0: error -110 whilst initialising SD card
[   74.405165] mmc0: error -110 whilst initialising SD card
[   75.873227] mmc0: host does not support reading read-only switch, assuming write-enable
[   75.895253] mmc0: new SDHC card on SPI
[   76.021167] mmcblk0: mmc0:0000 SC16G 14.8 GiB 
[   76.164703]  mmcblk0: unable to read partition table
[   76.207452] mmc0: SPI card removed
[   76.655218] mmc0: host does not support reading read-only switch, assuming write-enable
[   76.676972] mmc0: new SDHC card on SPI
[   76.804649] mmcblk0: mmc0:0000 SC16G 14.8 GiB 
[   77.053764]  mmcblk0: unable to read partition table
[   77.097659] mmc0: SPI card removed
[   77.534306] mmc0: host does not support reading read-only switch, assuming write-enable
[   77.555656] mmc0: new SDHC card on SPI
[   77.687680] mmcblk0: mmc0:0000 SC16G 14.8 GiB 
[   77.810231]  mmcblk0: unable to read partition table
[   77.841724] mmc0: SPI card removed
[   78.283486] mmc0: host does not support reading read-only switch, assuming write-enable
[   78.305510] mmc0: new SDHC card on SPI
[   78.428253] mmcblk0: mmc0:0000 SC16G 14.8 GiB 
[   78.550114]  mmcblk0: unable to read partition table
[   78.581596] mmc0: SPI card removed
[   79.014140] mmc0: host does not support reading read-only switch, assuming write-enable
[   79.035543] mmc0: new SDHC card on SPI
[   79.158257] mmcblk0: mmc0:0000 SC16G 14.8 GiB 
[   79.488641] mmc0: SPI card removed
[   79.925035] mmc0: host does not support reading read-only switch, assuming write-enable
[   79.946750] mmc0: new SDHC card on SPI
[   80.071102] mmcblk0: mmc0:0000 SC16G 14.8 GiB 
[   80.300824] mmc0: SPI card removed
[   80.734145] mmc0: host does not support reading read-only switch, assuming write-enable
[   80.755572] mmc0: new SDHC card on SPI
[   80.881724] mmcblk0: mmc0:0000 SC16G 14.8 GiB 
[   81.024103]  mmcblk0: unable to read partition table
[   81.068101] mmc0: SPI card removed
[   81.494269] mmc0: host does not support reading read-only switch, assuming write-enable
[   81.515675] mmc0: new SDHC card on SPI
[   81.645441] mmcblk0: mmc0:0000 SC16G 14.8 GiB 
[   81.873922] mmc0: SPI card removed
[   82.313989] mmc0: host does not support reading read-only switch, assuming write-enable
[   82.335366] mmc0: new SDHC card on SPI
[   82.458310] mmcblk0: mmc0:0000 SC16G 14.8 GiB 
[   82.534511] random: fast init done
[   82.820238] mmc0: SPI card removed
[   83.244226] mmc0: host does not support reading read-only switch, assuming write-enable
[   83.265605] mmc0: new SDHC card on SPI
[   83.388217] mmcblk0: mmc0:0000 SC16G 14.8 GiB 
[   83.510480]  mmcblk0: unable to read partition table
[   83.544253] mmc0: SPI card removed
[   83.954297] mmc0: error -110 whilst initialising SD card
[   85.384144] mmc0: host does not support reading read-only switch, assuming write-enable
[   85.405479] mmc0: new SDHC card on SPI
[   85.532299] mmcblk0: mmc0:0000 SC16G 14.8 GiB 
[   85.665554]  mmcblk0: unable to read partition table
[   85.707729] mmc0: SPI card removed
[   86.124200] mmc0: host does not support reading read-only switch, assuming write-enable
[   86.145558] mmc0: new SDHC card on SPI
[   86.267568] mmcblk0: mmc0:0000 SC16G 14.8 GiB 
[   86.608607] mmc0: SPI card removed
[   87.044003] mmc0: host does not support reading read-only switch, assuming write-enable
[   87.065375] mmc0: new SDHC card on SPI
[   87.186679] mmcblk0: mmc0:0000 SC16G 14.8 GiB 
[   87.307239]  mmcblk0: unable to read partition table
[   87.345535] mmc0: SPI card removed
[   87.767817] mmc0: error -110 whilst initialising SD card
[   89.234059] mmc0: host does not support reading read-only switch, assuming write-enable
[   89.256210] mmc0: new SDHC card on SPI
[   89.384602] mmcblk0: mmc0:0000 SC16G 14.8 GiB 
[   89.529579]  mmcblk0: unable to read partition table
[   89.561438] mmc0: SPI card removed
[   89.993891] mmc0: host does not support reading read-only switch, assuming write-enable
[   90.015311] mmc0: new SDHC card on SPI
[   90.137488] mmcblk0: mmc0:0000 SC16G 14.8 GiB 
[   90.280351]  mmcblk0: unable to read partition table
[   90.324340] mmc0: SPI card removed
[   90.725710] mmc0: error -110 whilst initialising SD card
[   92.123973] mmc0: host does not support reading read-only switch, assuming write-enable
[   92.145371] mmc0: new SDHC card on SPI
[   92.271645] mmcblk0: mmc0:0000 SC16G 14.8 GiB 
[   92.519373] mmc0: SPI card removed
[   92.954092] mmc0: host does not support reading read-only switch, assuming write-enable
[   92.975482] mmc0: new SDHC card on SPI
[   93.097031] mmcblk0: mmc0:0000 SC16G 14.8 GiB 
[   93.219660]  mmcblk0: unable to read partition table
[   93.251626] mmc0: SPI card removed
[   93.693772] mmc0: host does not support reading read-only switch, assuming write-enable
[   93.715833] mmc0: new SDHC card on SPI
[   93.843519] mmcblk0: mmc0:0000 SC16G 14.8 GiB 
[   93.966428]  mmcblk0: unable to read partition table
[   94.010282] mmc0: SPI card removed
[   94.434254] mmc0: host does not support reading read-only switch, assuming write-enable
[   94.455602] mmc0: new SDHC card on SPI
[   94.580854] mmcblk0: mmc0:0000 SC16G 14.8 GiB 
[   94.731709]  mmcblk0: unable to read partition table
[   94.776071] mmc0: SPI card removed
[   95.194227] mmc0: host does not support reading read-only switch, assuming write-enable
[   95.215586] mmc0: new SDHC card on SPI
[   95.338705] mmcblk0: mmc0:0000 SC16G 14.8 GiB 
[   95.576717]  mmcblk0: unable to read partition table
[   95.614420] mmc0: SPI card removed
[   96.035048] mmc0: error -110 whilst initialising SD card
[   97.458998] mmc0: error -110 whilst initialising SD card
[   98.914086] mmc0: host does not support reading read-only switch, assuming write-enable
[   98.935492] mmc0: new SDHC card on SPI
[   99.061787] mmcblk0: mmc0:0000 SC16G 14.8 GiB 
[   99.206374]  mmcblk0: unable to read partition table
[   99.250275] mmc0: SPI card removed
[   99.694182] mmc0: host does not support reading read-only switch, assuming write-enable
[   99.715587] mmc0: new SDHC card on SPI
[   99.842839] mmcblk0: mmc0:0000 SC16G 14.8 GiB 
[   99.987195]  mmcblk0: unable to read partition table
[  100.025518] mmc0: SPI card removed
[  100.474243] mmc0: host does not support reading read-only switch, assuming write-enable
[  100.495673] mmc0: new SDHC card on SPI
[  100.622814] mmcblk0: mmc0:0000 SC16G 14.8 GiB 
[  100.874343] mmc0: SPI card removed
[  101.313499] mmc0: host does not support reading read-only switch, assuming write-enable
[  101.335674] mmc0: new SDHC card on SPI
[  101.457648] mmcblk0: mmc0:0000 SC16G 14.8 GiB 
[  101.811404] mmc0: SPI card removed
[  102.233957] mmc0: host does not support reading read-only switch, assuming write-enable
[  102.255341] mmc0: new SDHC card on SPI
[  102.377407] mmcblk0: mmc0:0000 SC16G 14.8 GiB 
[  102.519784]  mmcblk0: unable to read partition table
[  102.551435] mmc0: SPI card removed
[  103.014176] mmc0: host does not support reading read-only switch, assuming write-enable
[  103.035598] mmc0: new SDHC card on SPI
[  103.157237] mmcblk0: mmc0:0000 SC16G 14.8 GiB 
[  103.393756]  mmcblk0: unable to read partition table
[  103.438050] mmc0: SPI card removed
[  103.883981] mmc0: host does not support reading read-only switch, assuming write-enable
[  103.905338] mmc0: new SDHC card on SPI
[  104.031043] mmcblk0: mmc0:0000 SC16G 14.8 GiB 
[  104.176121]  mmcblk0: unable to read partition table
[  104.217880] mmc0: SPI card removed
[  104.634795] mmc0: host does not support reading read-only switch, assuming write-enable
[  104.656533] mmc0: new SDHC card on SPI
[  104.784396] mmcblk0: mmc0:0000 SC16G 14.8 GiB 
[  105.034563]  mmcblk0: unable to read partition table
[  105.077518] mmc0: SPI card removed
[  105.494340] mmc0: host does not support reading read-only switch, assuming write-enable
[  105.515707] mmc0: new SDHC card on SPI
[  105.645130] mmcblk0: mmc0:0000 SC16G 14.8 GiB 
[  105.768036]  mmcblk0: unable to read partition table
[  105.804806] mmc0: SPI card removed
[  106.239200] mmc0: error -110 whilst initialising SD card
[  107.618052] mmc0: error -110 whilst initialising SD card
[  109.073430] mmc0: host does not support reading read-only switch, assuming write-enable
[  109.095574] mmc0: new SDHC card on SPI
[  109.223683] mmcblk0: mmc0:0000 SC16G 14.8 GiB 
[  109.345869]  mmcblk0: unable to read partition table
[  109.385555] mmc0: SPI card removed
[  109.829127] mmc0: error -110 whilst initialising SD card
[  111.244117] mmc0: host does not support reading read-only switch, assuming write-enable
[  111.265448] mmc0: new SDHC card on SPI
[  111.392125] mmcblk0: mmc0:0000 SC16G 14.8 GiB 
[  111.635327]  mmcblk0: unable to read partition table
[  111.681759] mmc0: SPI card removed
[  112.078952] mmc0: error -110 whilst initialising SD card
[  113.474298] mmc0: host does not support reading read-only switch, assuming write-enable
[  113.495633] mmc0: new SDHC card on SPI
[  113.623184] mmcblk0: mmc0:0000 SC16G 14.8 GiB 
[  113.748252]  mmcblk0: unable to read partition table
[  113.784905] mmc0: SPI card removed
[  114.232091] mmc0: host does not support reading read-only switch, assuming write-enable
[  114.255095] mmc0: new SDHC card on SPI
[  114.377155] mmcblk0: mmc0:0000 SC16G 14.8 GiB 
[  114.500122]  mmcblk0: unable to read partition table
[  114.531794] mmc0: SPI card removed
[  114.948904] mmc0: error -110 whilst initialising SD card
[  116.327736] mmc0: error -110 whilst initialising SD card
[  117.699042] mmc0: error -110 whilst initialising SD card
[  119.153265] mmc0: host does not support reading read-only switch, assuming write-enable
[  119.175259] mmc0: new SDHC card on SPI
[  119.300998] mmcblk0: mmc0:0000 SC16G 14.8 GiB 
[  119.427078]  mmcblk0: unable to read partition table
[  119.470091] mmc0: SPI card removed
[  119.888102] mmc0: error -110 whilst initialising SD card
[  121.297952] mmc0: error -110 whilst initialising SD card
[  122.738882] mmc0: error -110 whilst initialising SD card
[  124.165100] mmc0: error -110 whilst initialising SD card
[  125.604623] mmc0: error -110 whilst initialising SD card
[  126.978912] mmc0: error -110 whilst initialising SD card
[  128.359033] mmc0: error -110 whilst initialising SD card
[  129.778862] mmc0: error -110 whilst initialising SD card
[  131.205093] mmc0: error -110 whilst initialising SD card
[  132.587925] mmc0: error -110 whilst initialising SD card
[  134.019037] mmc0: error -110 whilst initialising SD card
[  135.463963] mmc0: host does not support reading read-only switch, assuming write-enable
[  135.485395] mmc0: new SDHC card on SPI
[  135.611876] mmcblk0: mmc0:0000 SC16G 14.8 GiB 
[  135.738005]  mmcblk0: unable to read partition table
[  135.781773] mmc0: SPI card removed
[  136.204139] mmc0: host does not support reading read-only switch, assuming write-enable
[  136.225544] mmc0: new SDHC card on SPI
[  136.348018] mmcblk0: mmc0:0000 SC16G 14.8 GiB 
[  136.470064]  mmcblk0: unable to read partition table
[  136.501604] mmc0: SPI card removed
[  136.939086] mmc0: error -110 whilst initialising SD card
[  138.328870] mmc0: error -110 whilst initialising SD card
[  139.694710] mmc0: error -110 whilst initialising SD card
[  141.154138] mmc0: host does not support reading read-only switch, assuming write-enable
[  141.175552] mmc0: new SDHC card on SPI
[  141.302148] mmcblk0: mmc0:0000 SC16G 14.8 GiB 
[  141.426403]  mmcblk0: unable to read partition table
[  141.470253] mmc0: SPI card removed
[  141.894267] mmc0: host does not support reading read-only switch, assuming write-enable
[  141.915674] mmc0: new SDHC card on SPI
[  142.036295] mmcblk0: mmc0:0000 SC16G 14.8 GiB 
[  142.160301]  mmcblk0: unable to read partition table
[  142.194084] mmc0: SPI card removed
[  142.609259] mmc0: error -110 whilst initialising SD card
[  144.028916] mmc0: error -110 whilst initialising SD card
[  145.459016] mmc0: error -110 whilst initialising SD card
[  146.895327] mmc0: error -110 whilst initialising SD card
[  148.354155] mmc0: host does not support reading read-only switch, assuming write-enable
[  148.375502] mmc0: new SDHC card on SPI
[  148.502005] mmcblk0: mmc0:0000 SC16G 14.8 GiB 
[  148.633602]  mmcblk0: unable to read partition table
[  148.677394] mmc0: SPI card removed
[  149.085282] mmc0: error -110 whilst initialising SD card
[  150.508880] mmc0: error -110 whilst initialising SD card
[  151.949096] mmc0: error -110 whilst initialising SD card
[  153.378801] mmc0: error -110 whilst initialising SD card
[  154.854290] mmc0: host does not support reading read-only switch, assuming write-enable
[  154.875632] mmc0: new SDHC card on SPI
[  155.005731] mmcblk0: mmc0:0000 SC16G 14.8 GiB 
[  155.128782]  mmcblk0: unable to read partition table
[  155.160990] mmc0: SPI card removed
[  155.584154] mmc0: host does not support reading read-only switch, assuming write-enable
[  155.605552] mmc0: new SDHC card on SPI
[  155.736637] mmcblk0: mmc0:0000 SC16G 14.8 GiB 
[  155.860492]  mmcblk0: unable to read partition table
[  155.894799] mmc0: SPI card removed
[  156.305111] mmc0: error -110 whilst initialising SD card
[  157.708942] mmc0: error -110 whilst initialising SD card
[  159.148999] mmc0: error -110 whilst initialising SD card
[  160.594317] mmc0: host does not support reading read-only switch, assuming write-enable
[  160.615726] mmc0: new SDHC card on SPI
[  160.743554] mmcblk0: mmc0:0000 SC16G 14.8 GiB 
[  160.866937]  mmcblk0: unable to read partition table
[  160.908970] mmc0: SPI card removed
[  161.338900] mmc0: error -110 whilst initialising SD card
[  162.739163] mmc0: error -110 whilst initialising SD card
[  164.167771] mmc0: error -110 whilst initialising SD card
[  165.539026] mmc0: error -110 whilst initialising SD card
[  166.978135] mmc0: error -110 whilst initialising SD card
[  168.428790] mmc0: error -110 whilst initialising SD card
[  169.845129] mmc0: error -110 whilst initialising SD card
[  171.228973] mmc0: error -110 whilst initialising SD card
[  172.658103] mmc0: error -110 whilst initialising SD card
[  174.098876] mmc0: error -110 whilst initialising SD card
[  175.548895] mmc0: error -110 whilst initialising SD card
[  176.978865] mmc0: error -110 whilst initialising SD card
[  178.408941] mmc0: error -110 whilst initialising SD card
[  179.858926] mmc0: error -110 whilst initialising SD card
[  181.285002] mmc0: error -110 whilst initialising SD card
[  182.659167] mmc0: error -110 whilst initialising SD card
[  184.099008] mmc0: error -110 whilst initialising SD card
[  185.539057] mmc0: error -110 whilst initialising SD card
[  186.988986] mmc0: error -110 whilst initialising SD card
[  188.429067] mmc0: error -110 whilst initialising SD card
[  189.859026] mmc0: error -110 whilst initialising SD card
[  191.309030] mmc0: error -110 whilst initialising SD card
[  192.748900] mmc0: error -110 whilst initialising SD card
[  194.188797] mmc0: error -110 whilst initialising SD card
[  195.618940] mmc0: error -110 whilst initialising SD card
[  197.059125] mmc0: error -110 whilst initialising SD card
[  198.489026] mmc0: error -110 whilst initialising SD card
[  199.849054] mmc0: error -110 whilst initialising SD card
[  201.227858] mmc0: error -110 whilst initialising SD card
[  202.668135] mmc0: error -110 whilst initialising SD card
[  204.095118] mmc0: error -110 whilst initialising SD card
[  205.559124] mmc0: error -110 whilst initialising SD card
[  206.978902] mmc0: error -110 whilst initialising SD card
[  208.418957] mmc0: error -110 whilst initialising SD card
[  209.788992] mmc0: error -110 whilst initialising SD card
[  211.228948] mmc0: error -110 whilst initialising SD card
[  212.669102] mmc0: error -110 whilst initialising SD card
[  214.075127] mmc0: error -110 whilst initialising SD card
[  215.458850] mmc0: error -110 whilst initialising SD card
[  216.898847] mmc0: error -110 whilst initialising SD card
[  218.339054] mmc0: error -110 whilst initialising SD card
[  219.709021] mmc0: error -110 whilst initialising SD card
[  221.137869] mmc0: error -110 whilst initialising SD card
[  222.568983] mmc0: error -110 whilst initialising SD card
[  223.949187] mmc0: error -110 whilst initialising SD card
[  225.388914] mmc0: error -110 whilst initialising SD card
[  226.818994] mmc0: error -110 whilst initialising SD card
[  228.269057] mmc0: error -110 whilst initialising SD card
[  229.708894] mmc0: error -110 whilst initialising SD card
[  231.149050] mmc0: error -110 whilst initialising SD card
[  232.579017] mmc0: error -110 whilst initialising SD card
[  234.008819] mmc0: error -110 whilst initialising SD card
[  235.459064] mmc0: error -110 whilst initialising SD card
[  236.908854] mmc0: error -110 whilst initialising SD card
[  238.338928] mmc0: error -110 whilst initialising SD card
[  239.768977] mmc0: error -110 whilst initialising SD card
[  241.148816] mmc0: error -110 whilst initialising SD card
[  242.567780] mmc0: error -110 whilst initialising SD card
[  243.928651] mmc0: error -110 whilst initialising SD card
[  245.365184] mmc0: error -110 whilst initialising SD card
[  246.738900] mmc0: error -110 whilst initialising SD card
[  248.168926] mmc0: error -110 whilst initialising SD card
[  249.548969] mmc0: error -110 whilst initialising SD card
[  250.968999] mmc0: error -110 whilst initialising SD card
[  252.338920] mmc0: error -110 whilst initialising SD card
[  253.708954] mmc0: error -110 whilst initialising SD card
[  255.147969] mmc0: error -110 whilst initialising SD card
[  256.589032] mmc0: error -110 whilst initialising SD card
[  258.017824] mmc0: error -110 whilst initialising SD card
[  259.375090] mmc0: error -110 whilst initialising SD card
[  260.808937] mmc0: error -110 whilst initialising SD card
[  262.198626] mmc0: error -110 whilst initialising SD card
[  263.618930] mmc0: error -110 whilst initialising SD card
[  265.058869] mmc0: error -110 whilst initialising SD card
[  266.485058] mmc0: error -110 whilst initialising SD card
[  267.858946] mmc0: error -110 whilst initialising SD card
Hello World!
init SPI
status: 0x0000000000000025
status: 0x0000000000000025
SPI initialized!
initializing SD... 
SD command cmd0 	response : 01
SD command cmd55 	response : 01
SD command cmd41 	response : 01
SD command cmd55 	response : 01
SD command cmd41 	response : 01
SD command cmd55 	response : 01
SD command cmd41 	response : 01
SD command cmd55 	response : 01
SD command cmd41 	response : 01
SD command cmd55 	response : 01
SD command cmd41 	response : 01
SD command cmd55 	response : 01
SD command cmd41 	response : 01
SD command cmd55 	response : 01
SD command cmd41 	response : 01
SD command cmd55 	response : 01
SD command cmd41 	response : 01
SD command cmd55 	response : 01
SD command cmd41 	response : 01
SD command cmd55 	response : 01
SD command cmd41 	response : 01
SD command cmd55 	response : 01
SD command cmd41 	response : 01
SD command cmd55 	response : 01
SD command cmd41 	response : 01
SD command cmd55 	response : 01
SD command cmd41 	response : 00
sd initialized!
SD card failed!
sd copy return value: FFFFFFFFFFFFFFFE