I've been having some trouble recently when trying to mount a SPI flash chip with the command:
mount -t ext2 -r /dev/mtdblock4 /mnt/spi
Resulting in the error:
mount: mounting /dev/mtdblock4 on /mnt/spi failed: Invalid argument
Running embedded Linux on an OMAP L138.
We've recently upgraded our SPI NOR flash chips for a few prototype boards. Until recently we were using Winbond W25Q128 chips and moved to Micron N25Q256 chips due to space requirements, obsolescence, etc. I've already gone through UBoot and the Linux kernel, adding an array entry for the N25Q256 chip with size, ID, etc. filled out. Below is the startup printout which leads me to believe the chip is seen and setup correctly in /dev, leading me to believe I'm missing something more subtle.
NAND: 256 MiB
Searching table entry 0: shift=0 idcode=ef
Searching table entry 1: shift=0 idcode=20
Found a match, creating flash
WINBOND: Searching flash table[0]
Table ID: 3013 ?= Setup ID: ba19
WINBOND: Searching flash table[1]
Table ID: 3015 ?= Setup ID: ba19
WINBOND: Searching flash table[2]
Table ID: 3016 ?= Setup ID: ba19
WINBOND: Searching flash table[3]
Table ID: 3017 ?= Setup ID: ba19
WINBOND: Searching flash table[4]
Table ID: 4015 ?= Setup ID: ba19
WINBOND: Searching flash table[5]
Table ID: 4016 ?= Setup ID: ba19
WINBOND: Searching flash table[6]
Table ID: 4017 ?= Setup ID: ba19
WINBOND: Searching flash table[7]
Table ID: 4018 ?= Setup ID: ba19
WINBOND: Searching flash table[8]
Table ID: ba19 ?= Setup ID: ba19
SF: Detected N25Q256 with page size 4 KiB, total 32 MiB
In: serial
Out: serial
Err: serial
Net: DaVinci-EMAC
Entering print_cpuinfo()...
PLL0_SYSCLK1: 900 MHz (DSP, fixed /1 clock ratio)
PLL0_SYSCLK2: 450 MHz (SPI, fixed /2 clock ratio)
PLL0_SYSCLK3: 180 MHz (EMIFA)
PLL0_SYSCLK4: 225 MHz (EMAC/MDIO, fixed /4 clock ratio)
PLL0_SYSCLK5: 300 MHz (Not used)
PLL0_SYSCLK6: 900 MHz (ARM, fixed /1 clock ratio)
PLL0_SYSCLK7: 100 MHz (EMAC RMII clock)
PLL1_SYSCLK1: 600 MHz (DDR)
PLL1_SYSCLK2: 300 MHz (Not used)
PLL1_SYSCLK3: 200 MHz (Not used)
SDCR : 0x00174622
SDRCR : 0x00000492
SDTIMR1 : 0x1E922A09
SDTIMR2 : 0x4411C722
DRPYC1R : 0x00000083
VTPIO_CTL: 0x0018E1B7
DDR_SLEW : 0x00000000
PSC0 Enabled Modules: 03 06 07 08 10 11 12 14 15
PSC1 Enabled Modules: 01 02 03 05 06 10 13 16 24 25 26 27 28 29 30 31
PINMUX00: 0x88288888
PINMUX01: 0x88888888
PINMUX02: 0x88888888
PINMUX03: 0x88888888
PINMUX04: 0x22228888
PINMUX05: 0x81118111
PINMUX06: 0x81888888
PINMUX07: 0x18111118
PINMUX08: 0x11111111
PINMUX09: 0x11111111
PINMUX10: 0x88888888
PINMUX11: 0x11111188
PINMUX12: 0x11111111
PINMUX13: 0x44448888
PINMUX14: 0x44444488
PINMUX15: 0x44444444
PINMUX16: 0x44444444
PINMUX17: 0x44444444
PINMUX18: 0x88444444
PINMUX19: 0x18888888
CFGCHIP0: 0x00000110
CFGCHIP1: 0x00000000
CFGCHIP2: 0x0000EF00
CFGCHIP3: 0x0000FE20
Exiting print_cpuinfo()...
Hit any key to stop autoboot: 0
Searching table entry 0: shift=0 idcode=ef
Searching table entry 1: shift=0 idcode=20
Found a match, creating flash
WINBOND: Searching flash table[0]
Table ID: 3013 ?= Setup ID: ba19
WINBOND: Searching flash table[1]
Table ID: 3015 ?= Setup ID: ba19
WINBOND: Searching flash table[2]
Table ID: 3016 ?= Setup ID: ba19
WINBOND: Searching flash table[3]
Table ID: 3017 ?= Setup ID: ba19
WINBOND: Searching flash table[4]
Table ID: 4015 ?= Setup ID: ba19
WINBOND: Searching flash table[5]
Table ID: 4016 ?= Setup ID: ba19
WINBOND: Searching flash table[6]
Table ID: 4017 ?= Setup ID: ba19
WINBOND: Searching flash table[7]
Table ID: 4018 ?= Setup ID: ba19
WINBOND: Searching flash table[8]
Table ID: ba19 ?= Setup ID: ba19
SF: Detected N25Q256 with page size 4 KiB, total 32 MiB
## Booting kernel from Legacy Image at c3000000 ...
Image Name: Linux-3.3.0
Image Type: ARM Linux Kernel Image (uncompressed)
Data Size: 4132848 Bytes = 3.9 MiB
Load Address: c0008000
Entry Point: c0008000
Verifying Checksum ... OK
Loading Kernel Image ... OK
OK
Starting kernel ...
Uncompressing Linux... done, booting the kernel.
CPU: ARM926EJ-S [41069265] revision 5 (ARMv5TEJ), cr=00053177
CPU: VIVT data cache, VIVT instruction cache
Machine: DaVinci DA850/OMAP-L138/AM18x EVM
Memory policy: ECC disabled, Data cache writeback
BUG: mapping for 0x80000000 at 0xfffe0000 out of vmalloc space
Built 1 zonelists in Zone order, mobility grouping on. Total pages: 12192
Detecting Board Type
Board: QD Controller (0)
Registering SPI Flash
soc-audio soc-audio.0: ASoC: Failed to create card debugfs directory
drivers/rtc/hctosys.c: unable to open rtc device (rtc0)
Executing /etc/init.d/rcS...
mount: mounting /dev/mtdblock4 on /mnt/spi failed: Invalid argument
cp: can't stat '/mnt/spi/startup.ash': No such file or directory
/etc/init.d/rcS: line 28: /etc/startup.ash: not found
And next is the dmesg output:
~ # dmesg
Booting Linux on physical CPU 0
Linux version 3.3.0 (kelliott@BuilderBox) (gcc version 4.3.3 (Sourcery G++ Lite 2009q1-203) ) #2 PREEMPT Wed Jun 11 13:40:11 EDT 2014
CPU: ARM926EJ-S [41069265] revision 5 (ARMv5TEJ), cr=00053177
CPU: VIVT data cache, VIVT instruction cache
Machine: DaVinci DA850/OMAP-L138/AM18x EVM
Memory policy: ECC disabled, Data cache writeback
BUG: mapping for 0x80000000 at 0xfffe0000 out of vmalloc space
DaVinci da850/omap-l138/am18x variant 0x1
On node 0 totalpages: 12288
free_area_init_node: node 0, pgdat c086d67c, node_mem_map c088a000
DMA zone: 96 pages used for memmap
DMA zone: 0 pages reserved
DMA zone: 12192 pages, LIFO batch:1
pcpu-alloc: s0 r0 d32768 u32768 alloc=1*32768
pcpu-alloc: [0] 0
Built 1 zonelists in Zone order, mobility grouping on. Total pages: 12192
Kernel command line: mem=48M@0xc0000000 console=ttyS2,115200n8 rw noinitrd loglevel=5
PID hash table entries: 256 (order: -2, 1024 bytes)
Dentry cache hash table entries: 8192 (order: 3, 32768 bytes)
Inode-cache hash table entries: 4096 (order: 2, 16384 bytes)
Memory: 48MB = 48MB total
Memory: 39928k/39928k available, 9224k reserved, 0K highmem
Virtual kernel memory layout:
vector : 0xffff0000 - 0xffff1000 ( 4 kB)
fixmap : 0xfff00000 - 0xfffe0000 ( 896 kB)
vmalloc : 0xc3800000 - 0xff000000 ( 952 MB)
lowmem : 0xc0000000 - 0xc3000000 ( 48 MB)
modules : 0xbf000000 - 0xc0000000 ( 16 MB)
.text : 0xc0008000 - 0xc04a2000 (4712 kB)
.init : 0xc04a2000 - 0xc0833000 (3652 kB)
.data : 0xc0834000 - 0xc086e100 ( 233 kB)
.bss : 0xc086e124 - 0xc0889c2c ( 111 kB)
SLUB: Genslabs=13, HWalign=32, Order=0-3, MinObjects=0, CPUs=1, Nodes=1
NR_IRQS:245
Console: colour dummy device 80x30
Calibrating delay loop... 449.74 BogoMIPS (lpj=2248704)
pid_max: default: 32768 minimum: 301
Mount-cache hash table entries: 512
CPU: Testing write buffer coherency: ok
Setting up static identity map for 0xc03847d8 - 0xc0384814
gpiochip_add: registered GPIOs 0 to 31 on device: DaVinci
gpiochip_add: registered GPIOs 32 to 63 on device: DaVinci
gpiochip_add: registered GPIOs 64 to 95 on device: DaVinci
gpiochip_add: registered GPIOs 96 to 127 on device: DaVinci
gpiochip_add: registered GPIOs 128 to 143 on device: DaVinci
DaVinci: 144 gpio irqs
print_constraints: dummy:
NET: Registered protocol family 16
Detecting Board Type
Board: QD Controller (0)
Registering SPI Flash
bio: create slab <bio-0> at 0
SCSI subsystem initialized
libata version 3.00 loaded.
usbcore: registered new interface driver usbfs
usbcore: registered new interface driver hub
usbcore: registered new device driver usb
Advanced Linux Sound Architecture Driver Version 1.0.24.
Switching to clocksource timer0_1
musb-hdrc: version 6.0, ?dma?, otg (peripheral+host)
NET: Registered protocol family 2
IP route cache hash table entries: 1024 (order: 0, 4096 bytes)
TCP established hash table entries: 2048 (order: 2, 16384 bytes)
TCP bind hash table entries: 2048 (order: 1, 8192 bytes)
TCP: Hash tables configured (established 2048 bind 2048)
TCP reno registered
UDP hash table entries: 256 (order: 0, 4096 bytes)
UDP-Lite hash table entries: 256 (order: 0, 4096 bytes)
NET: Registered protocol family 1
RPC: Registered named UNIX socket transport module.
RPC: Registered udp transport module.
RPC: Registered tcp transport module.
RPC: Registered tcp NFSv4.1 backchannel transport module.
EMAC: MII PHY configured, RMII PHY will not be functional
JFFS2 version 2.2. (NAND) © 2001-2006 Red Hat, Inc.
msgmni has been set to 77
io scheduler noop registered (default)
Serial: 8250/16550 driver, 3 ports, IRQ sharing disabled
serial8250.0: ttyS0 at MMIO 0x1c42000 (irq = 25) is a AR7
serial8250.0: ttyS1 at MMIO 0x1d0c000 (irq = 53) is a AR7
serial8250.0: ttyS2 at MMIO 0x1d0d000 (irq = 61) is a AR7
console [ttyS2] enabled
brd: module loaded
spi_davinci spi_davinci.1: DMA: supported
spi_davinci spi_davinci.1: DMA: RX channel: 18, TX channel: 19, event queue: 0
m25p80 spi1.0: n25q256 (32768 Kbytes)
Creating 7 MTD partitions on "m25p80":
0x000000000000-0x000000080000 : "UBL"
0x000000080000-0x0000000ff000 : "U-Boot"
0x0000000ff000-0x000000100000 : "U-Boot Environment"
0x000000100000-0x000000500000 : "Kernel"
0x000000500000-0x000001fff000 : "Filesystem"
0x000000000000-0x000001fff000 : "Entire SPI Flash"
0x000001fff000-0x000002000000 : "Flash Variables"
Using default MAC address: 00:11:89:00:00:00
spi_davinci spi_davinci.1: Controller at 0xfef0e000
davinci_mdio davinci_mdio.0: davinci mdio revision 1.5
davinci_mdio davinci_mdio.0: detected phy mask fffffffc
davinci_mdio.0: probed
davinci_mdio davinci_mdio.0: phy[0]: device davinci_mdio-0:00, driver Micrel KS8041
davinci_mdio davinci_mdio.0: phy[1]: device davinci_mdio-0:01, driver Micrel KS8041
ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver
Initializing USB Mass Storage driver...
usbcore: registered new interface driver usb-storage
USB Mass Storage support registered.
i2c /dev entries driver
lirc_dev: IR Remote Control driver registered, major 253
IR NEC protocol handler initialized
IR RC5(x) protocol handler initialized
IR RC6 protocol handler initialized
IR JVC protocol handler initialized
IR Sony protocol handler initialized
IR RC5 (streamzap) protocol handler initialized
IR SANYO protocol handler initialized
IR MCE Keyboard/mouse protocol handler initialized
IR LIRC bridge handler initialized
Linux video capture interface: v2.00
usbcore: registered new interface driver uvcvideo
USB Video Class driver (1.1.1)
watchdog watchdog: heartbeat 60 sec
usbcore: registered new interface driver usbhid
usbhid: USB HID core driver
usbcore: registered new interface driver snd-usb-audio
soc-audio soc-audio.0: ASoC: Failed to create card debugfs directory
ALSA device list:
No soundcards found.
TCP cubic registered
NET: Registered protocol family 17
console [netcon0] enabled
netconsole: network logging started
drivers/rtc/hctosys.c: unable to open rtc device (rtc0)
Freeing init memory: 3652K
I was wondering if anyone else has had any luck using these newer Micron SPI chips and what they did to get them to work, or if there are any recommended tips on to how to debug this problem.
If there's any additional information that I can provide that would give a clearer understanding of the problem I'm having, just let me know.
Thanks in advance!
