TE0715 Petalinux 2015.2 unable to acess QSPI as MTD.

[Steven Renich]

I have a project that can boot Linux from the QSPI but cannot access the QSPI from Linux. 
I would like to update the flash as suggested in the following thread:
http://forum.trenz-electronic.de/index.php/topic,302.msg991.html#msg991
However, I see no entries in /proc/mtd, nor mtd0, mtd1, but I do see spi@e000d000 in /proc/device-tree/amba.

I am running with a TE0715-15-1C on a TE0703.  Here is what I see in Linux:

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root@rfcc_plnx:~# ls /proc
1             3             812           crypto        kpageflags    swaps
10            360           813           device-tree   loadavg       sys
11            374           823           devices       locks         sysvipc
12            375           853           diskstats     meminfo       thread-self
13            376           862           driver        misc          timer_list
14            4             887           execdomains   modules       timer_stats
15            473           9             fb            mounts        tty
16            5             asound        filesystems   mtd           uptime
17            50            buddyinfo     fs            net           version
19            539           bus           interrupts    pagetypeinfo  vmallocinfo
2             570           cgroups       iomem         partitions    vmstat
229           582           cmdline       ioports       scsi          zoneinfo
232           595           config.gz     irq           self
233           6             consoles      kallsyms      slabinfo
235           7             cpu           kmsg          softirqs
267           8             cpuinfo       kpagecount    stat
root@rfcc_plnx:~# cat /proc/mtd
dev:    size   erasesize  name
root@rfcc_plnx:~# ls /proc/device-tree
#address-cells    amba_pl           fixedregulator@0  pmu
#size-cells       chosen            memory
aliases           compatible        model
amba              cpus              name
root@rfcc_plnx:~# ls /proc/device-tree/amba
#address-cells                 name
#size-cells                    ocmc@f800c000
adc@f8007100                   ranges
cache-controller@f8f02000      sdhci@e0100000
can@e0008000                   sdhci@e0101000
can@e0009000                   serial@e0000000
compatible                     serial@e0001000
devcfg@f8007000                slcr@f8000000
dmac@f8003000                  spi@e0006000
ethernet@e000b000              spi@e0007000
ethernet@e000c000              spi@e000d000
gpio@e000a000                  timer@f8001000
i2c@e0004000                   timer@f8002000
i2c@e0005000                   timer@f8f00200
interrupt-controller@f8f01000  timer@f8f00600
interrupt-parent               usb@e0002000
memory-controller@e000e000     usb@e0003000
memory-controller@f8006000     watchdog@f8005000




I have extracted the .dts from my image.ub and one that I downloaded from Trenz te0715-test board (it's 2015.4).  The QSPI sections are the same.
I am attaching the extracted device tree source "regen_tree.dts" (renamed .txt).

I can provide the .hdf file if that would help.

Here is the boot output:

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U-Boot 2014.07 (Jan 23 2015 - 20:57:00)

I2C:   ready
DRAM:  ECC disabled 1 GiB
MMC:   zynq_sdhci: 0
SF: Detected S25FL256S_64K with page size 256 Bytes, erase size 64 KiB, total 32 MiB
In:    serial
Out:   serial
Err:   serial
Net:   Gem.e000b000
Warning: failed to set MAC address

Hit any key to stop autoboot:  0
boot Petalinux from QSPI flash
SF: Detected S25FL256S_64K with page size 256 Bytes, erase size 64 KiB, total 32 MiB
SF: 11010048 bytes @ 0x520000 Read: OK
## Loading kernel from FIT Image at 01000000 ...
   Using 'conf@1' configuration
   Trying 'kernel@1' kernel subimage
     Description:  PetaLinux Kernel
     Type:         Kernel Image
     Compression:  gzip compressed
     Data Start:   0x010000f0
     Data Size:    9459552 Bytes = 9 MiB
     Architecture: ARM
     OS:           Linux
     Load Address: 0x00008000
     Entry Point:  0x00008000
     Hash algo:    crc32
     Hash value:   d5ccd00b
   Verifying Hash Integrity ... crc32+ OK
## Loading fdt from FIT Image at 01000000 ...
   Using 'conf@1' configuration
   Trying 'fdt@1' fdt subimage
     Description:  Flattened Device Tree blob
     Type:         Flat Device Tree
     Compression:  uncompressed
     Data Start:   0x01905934
     Data Size:    13494 Bytes = 13.2 KiB
     Architecture: ARM
     Hash algo:    crc32
     Hash value:   b6775c7b
   Verifying Hash Integrity ... crc32+ OK
   Booting using the fdt blob at 0x1905934
   Uncompressing Kernel Image ... OK
   Loading Device Tree to 07ff9000, end 07fff4b5 ... OK

Starting kernel ...

console [ttyPS0] enabled
bootconsole [earlycon0] disabled
e0001000.serial: ttyPS1 at MMIO 0xe0001000 (irq = 145, base_baud = 6249999) is a xuartps
xdevcfg f8007000.devcfg: ioremap 0xf8007000 to 8086c000
[drm] Initialized drm 1.1.0 20060810
brd: module loaded
loop: module loaded
CAN device driver interface
libphy: MACB_mii_bus: probed
mdio_bus e000b000.etherne: /amba/ethernet@e000b000/mdio has invalid PHY address
mdio_bus e000b000.etherne: scan phy mdio at address 0
mdio_bus e000b000.etherne: scan phy mdio at address 1
mdio_bus e000b000.etherne: scan phy mdio at address 2
mdio_bus e000b000.etherne: scan phy mdio at address 3
mdio_bus e000b000.etherne: scan phy mdio at address 4
mdio_bus e000b000.etherne: scan phy mdio at address 5
mdio_bus e000b000.etherne: scan phy mdio at address 6
mdio_bus e000b000.etherne: scan phy mdio at address 7
mdio_bus e000b000.etherne: scan phy mdio at address 8
mdio_bus e000b000.etherne: scan phy mdio at address 9
mdio_bus e000b000.etherne: scan phy mdio at address 10
mdio_bus e000b000.etherne: scan phy mdio at address 11
mdio_bus e000b000.etherne: scan phy mdio at address 12
mdio_bus e000b000.etherne: scan phy mdio at address 13
mdio_bus e000b000.etherne: scan phy mdio at address 14
mdio_bus e000b000.etherne: scan phy mdio at address 15
mdio_bus e000b000.etherne: scan phy mdio at address 16
mdio_bus e000b000.etherne: scan phy mdio at address 17
mdio_bus e000b000.etherne: scan phy mdio at address 18
mdio_bus e000b000.etherne: scan phy mdio at address 19
mdio_bus e000b000.etherne: scan phy mdio at address 20
mdio_bus e000b000.etherne: scan phy mdio at address 21
mdio_bus e000b000.etherne: scan phy mdio at address 22
mdio_bus e000b000.etherne: scan phy mdio at address 23
mdio_bus e000b000.etherne: scan phy mdio at address 24
mdio_bus e000b000.etherne: scan phy mdio at address 25
mdio_bus e000b000.etherne: scan phy mdio at address 26
mdio_bus e000b000.etherne: scan phy mdio at address 27
mdio_bus e000b000.etherne: scan phy mdio at address 28
mdio_bus e000b000.etherne: scan phy mdio at address 29
mdio_bus e000b000.etherne: scan phy mdio at address 30
mdio_bus e000b000.etherne: scan phy mdio at address 31
macb e000b000.ethernet eth0: Cadence GEM rev 0x00020118 at 0xe000b000 irq 147 (00:0a:35:00:1e:53)
macb e000b000.ethernet eth0: attached PHY driver [Marvell 88E1510] (mii_bus:phy_addr=e000b000.etherne:00, irq=-1)
macb e000c000.ethernet (unnamed net_device) (uninitialized): invalid hw address, using random
libphy: MACB_mii_bus: probed
mdio_bus e000c000.etherne: /amba/ethernet@e000c000/mdio has invalid PHY address
mdio_bus e000c000.etherne: scan phy mdio at address 0
mdio_bus e000c000.etherne: scan phy mdio at address 1
mdio_bus e000c000.etherne: scan phy mdio at address 2
mdio_bus e000c000.etherne: scan phy mdio at address 3
mdio_bus e000c000.etherne: scan phy mdio at address 4
mdio_bus e000c000.etherne: scan phy mdio at address 5
mdio_bus e000c000.etherne: scan phy mdio at address 6
mdio_bus e000c000.etherne: scan phy mdio at address 7
mdio_bus e000c000.etherne: scan phy mdio at address 8
mdio_bus e000c000.etherne: scan phy mdio at address 9
mdio_bus e000c000.etherne: scan phy mdio at address 10
mdio_bus e000c000.etherne: scan phy mdio at address 11
mdio_bus e000c000.etherne: scan phy mdio at address 12
mdio_bus e000c000.etherne: scan phy mdio at address 13
mdio_bus e000c000.etherne: scan phy mdio at address 14
mdio_bus e000c000.etherne: scan phy mdio at address 15
mdio_bus e000c000.etherne: scan phy mdio at address 16
mdio_bus e000c000.etherne: scan phy mdio at address 17
mdio_bus e000c000.etherne: scan phy mdio at address 18
mdio_bus e000c000.etherne: scan phy mdio at address 19
mdio_bus e000c000.etherne: scan phy mdio at address 20
mdio_bus e000c000.etherne: scan phy mdio at address 21
mdio_bus e000c000.etherne: scan phy mdio at address 22
mdio_bus e000c000.etherne: scan phy mdio at address 23
mdio_bus e000c000.etherne: scan phy mdio at address 24
mdio_bus e000c000.etherne: scan phy mdio at address 25
mdio_bus e000c000.etherne: scan phy mdio at address 26
mdio_bus e000c000.etherne: scan phy mdio at address 27
mdio_bus e000c000.etherne: scan phy mdio at address 28
mdio_bus e000c000.etherne: scan phy mdio at address 29
mdio_bus e000c000.etherne: scan phy mdio at address 30
mdio_bus e000c000.etherne: scan phy mdio at address 31
macb e000c000.ethernet eth1: Cadence GEM rev 0x00020118 at 0xe000c000 irq 148 (5e:67:1e:4d:d3:d6)
macb e000c000.ethernet eth1: attached PHY driver [Generic PHY] (mii_bus:phy_addr=e000c000.etherne:00, irq=-1)
e1000e: Intel(R) PRO/1000 Network Driver - 2.3.2-k
e1000e: Copyright(c) 1999 - 2014 Intel Corporation.
ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
ehci-pci: EHCI PCI platform driver
usbcore: registered new interface driver usb-storage
e0002000.usb supply vbus not found, using dummy regulator
platform ci_hdrc.0: Driver ci_hdrc requests probe deferral
mousedev: PS/2 mouse device common for all mice
i2c /dev entries driver
cdns-i2c e0004000.i2c: 400 kHz mmio e0004000 irq 141
cdns-i2c e0005000.i2c: 400 kHz mmio e0005000 irq 142
zynq-edac f8006000.memory-controller: ecc not enabled
Xilinx Zynq CpuIdle Driver started
Driver 'mmcblk' needs updating - please use bus_type methods
sdhci: Secure Digital Host Controller Interface driver
sdhci: Copyright(c) Pierre Ossman
sdhci-pltfm: SDHCI platform and OF driver helper
sdhci-arasan e0100000.sdhci: No vmmc regulator found
sdhci-arasan e0100000.sdhci: No vqmmc regulator found
mmc0: SDHCI controller on e0100000.sdhci [e0100000.sdhci] using ADMA
ledtrig-cpu: registered to indicate activity on CPUs
usbcore: registered new interface driver usbhid
usbhid: USB HID core driver
TCP: cubic registered
NET: Registered protocol family 17
can: controller area network core (rev 20120528 abi 9)
NET: Registered protocol family 29
can: raw protocol (rev 20120528)
can: broadcast manager protocol (rev 20120528 t)
can: netlink gateway (rev 20130117) max_hops=1
Registering SWP/SWPB emulation handler
platform ci_hdrc.0: Driver ci_hdrc requests probe deferral
/opt/pkg/petalinux-v2015.2.1-final/components/linux-kernel/xlnx-3.19/drivers/rtc/hctosys.c: unable to open rtc device (rtc0)
ALSA device list:
  No soundcards found.
Freeing unused kernel memory: 6092K (40639000 - 40c2c000)
INIT: version 2.88 booting
Creating /dev/flash/* device nodes
random: dd urandom read with 0 bits of entropy available
starting Busybox inet Daemon: inetd... done.
Starting uWeb server:
NET: Registered protocol family 10
update-rc.d: /etc/init.d/run-postinsts exists during rc.d purge (continuing)
Removing any system startup links for run-postinsts ...
  /etc/rcS.d/S99run-postinsts
INIT: Entering runlevel: 5
Configuring network interfaces... IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready
udhcpc (v1.23.1) started
Sending discover...
Sending discover...
Sending discover...
No lease, forking to background
done.

Built with PetaLinux v2015.2.1 (Yocto 1.8) rfcc_plnx /dev/ttyPS0
rfcc_plnx login:



Plese ignore the MAC address confusion above.  I have seen instructions on fixing it on the Trenz Wiki, but have not yet had time to fix it.

Any help would be appreciated.

Steven

[JH]

Hi Steven,

in your extracted device tree source "regen_tree.dts", you use a driver from Micron for the flash (n25q128), see:

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flash@0 {
compatible = "micron,n25q128";
reg = <0x0>;
#address-cells = <0x1>;
#size-cells = <0x1>;
spi-max-frequency = <0x2faf080>;

partition@0x00000000 {
label = "boot";
reg = <0x0 0x500000>;
};

partition@0x00500000 {
label = "bootenv";
reg = <0x500000 0x20000>;
};

partition@0x00520000 {
label = "kernel";
reg = <0x520000 0xa80000>;
};

partition@0x00fa0000 {
label = "spare";
reg = <0xfa0000 0x0>;
};
};


The  TE0715 has a Flash from Spansion (S25FL256SAGBHI20),  try the following code (i think the driver name should be correct)

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flash@0 {
compatible = "spansion,s25fl256s";
reg = <0x0>;
#address-cells = <0x1>;
#size-cells = <0x1>;
spi-max-frequency = <0x2faf080>;

partition@0x00000000 {
label = "boot";
reg = <0x0 0x500000>;
};

partition@0x00500000 {
label = "bootenv";
reg = <0x500000 0x20000>;
};

partition@0x00520000 {
label = "kernel";
reg = <0x520000 0xa80000>;
};

partition@0x00fa0000 {
label = "spare";
reg = <0xfa0000 0x0>;
};
};


br
John

[Steven Renich]

John,

Thanks for the info.  I just tried that code and I still can't see /dev/mtd0.  However, I do get "spansion,s25fl256s" in /proc/device-tree..../compatible.

In Petalinux-config -c kernel, I did not see any driver for either the micron or spansion, only the Xilinx QSPI.  Do I need to specify another driver?

Thanks,

Steven

[Antti Lukats]

Please only change

system-top.dts
==========

by adding:

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&flash0 {
compatible = "spansion,s25fl256s1";
#size-cells = <1>;
reg = <0x0>;
spi-tx-bus-width = <1>;
spi-rx-bus-width = <4>;
spi-max-frequency = <10000000>;

};

This is only change in devicetree needed for flash to work.

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m25p80 spi0.0: s25fl256s1 (32768 Kbytes)
4 ofpart partitions found on MTD device spi0.0
Creating 4 MTD partitions on "spi0.0":
0x000000000000-0x000000500000 : "boot"
0x000000500000-0x000000520000 : "bootenv"
0x000000520000-0x000000fa0000 : "kernel"
0x000000fa0000-0x000002000000 : "spare"

this is snipped from bootlog

[Steven Renich]

Annti,

Thank you! That works.

Steven