Hello,
We have a problems in connecting CompactFlash memory card to AT91RM9200-based board.
The board schematic in part of CF-interface is equal to AT91RM9200DK. The Linux Kernel version is
2=2E6.17 with applied 2.6.17-at91.patch fromWith enabled "PCCARD (PCMCIA/CardBus) support" and disabled "ATA/ATAPI/MFM/RLL support" in kernel's configuration, pcmciautils shows the following:
# pccardctl ident Socket 0: product info: "SanDisk", "SDP", "5/3 0.6", "" manfid: 0x0045, 0x0401 function: 4 (fixed disk) / # pccardctl ls Socket 0 Bridge: [at91_cf] (bus ID: at91_cf) Socket 0 Device 0: [-- no driver --] (bus ID: 0.0)
After enabled "ATA/ATAPI/MFM/RLL support", messages on the terminal (after insert of CF-card):
at91_cf: card present cs: pcmcia_socket0: parse_events: events 00000080 cs: pcmcia_socket0: insert cs: pcmcia_socket0: setup at91_cf: Vcc 33, io_irq 0, flags 0000 csc 0080 cs: pcmcia_socket0: reset at91_cf: Vcc 33, io_irq 0, flags 0240 csc 0080 at91_cf: Vcc 33, io_irq 0, flags 0200 csc 0080 pccard: PCMCIA card inserted into slot 0 cs: pcmcia_socket0: insert done cs: pcmcia_socket0: send_event(event 4, pri 0, callback 0xc019fc58) ds: ds_event(0x000004, 0, 0xc0cc2400) cs: pcmcia_socket0: pcmcia_read_cis_mem(1, 0x0, 2) .=2E. pcmcia: registering new device pcmcia0.0 .=2E at91_cf: Vcc 33, io_irq 0, flags 0200 csc 0080 at91_cf: Vcc 33, io_irq 161, flags 0220 csc 0080 cs: pcmcia_socket0: pcmcia_write_cis_mem(1, 0x103, 1) cs: pcmcia_socket0: pcmcia_write_cis_mem(1, 0x100, 1) cs: pcmcia_socket0: pcmcia_write_cis_mem(1, 0x101, 1) cs: pcmcia_socket0: pcmcia_write_cis_mem(1, 0x102, 1) at91_cf: 16bit i/o bus Probing IDE interface ide0... =E5'#^3nv#`$, ATA DISK drive Unable to handle kernel NULL pointer dereference at virtual address
00000008 pgd =3D c0004000 [00000008] *pgd=3D00000000 Internal error: Oops: 17 [#1] Modules linked in: CPU: 0 PC is at enable_irq+0x6c/0xe4 LR is at enable_irq+0x70/0xe4So something goes wrong. My question is: How I can mount this CF-card on our board? What goes wrong?
Thanks in advice.
The kernel configuration related to PCMCIA is:
# # PCCARD (PCMCIA/CardBus) support # CONFIG_PCCARD=3Dy CONFIG_PCMCIA_DEBUG=3Dy CONFIG_PCMCIA=3Dy CONFIG_PCMCIA_LOAD_CIS=3Dy CONFIG_PCMCIA_IOCTL=3Dy
# # PC-card bridges # CONFIG_AT91_CF=3Dy
The kernel configuration relaited to ATA is:
# # ATA/ATAPI/MFM/RLL support # CONFIG_IDE=3Dy CONFIG_BLK_DEV_IDE=3Dy
CONFIG_BLK_DEV_IDECS=3Dy # # IDE chipset support/bugfixes # CONFIG_IDE_GENERIC=3Dy
The kernel boot messages:
Linux version 2.6.17 (dmitriy@localhost) (gcc version 3.4.3) #86 Mon Nov 20 12:3
6:52 EET 2006 CPU: ARM920Tid(wb) [41129200] revision 0 (ARMv4T) Machine: uCrouter EVM9200 Memory policy: ECC disabled, Data cache writeback On node 0 totalpages: 4096 DMA zone: 4096 pages, LIFO batch:0 Clocks: CPU 179 MHz, master 44 MHz, main 18.432 MHz CPU0: D VIVT write-back cache CPU0: I cache: 16384 bytes, associativity 64, 32 byte lines, 8 sets CPU0: D cache: 16384 bytes, associativity 64, 32 byte lines, 8 sets Built 1 zonelists Kernel command line: root=3D/dev/ram rw initrd=3D0x20500000,0x500000 ramdisk_size=3D10 000 console=3DttyS0,115200 mem=3D16M debug pcmcia_core.pc_debug=3D9 pcmcia.pc_debug=3D9 AT91: 128 gpio irqs in 4 banks PID hash table entries: 128 (order: 7, 512 bytes) Console: colour dummy device 80x30 Dentry cache hash table entries: 2048 (order: 1, 8192 bytes) Inode-cache hash table entries: 1024 (order: 0, 4096 bytes) Memory: 16MB =3D 16MB total Memory: 9136KB available (1464K code, 381K data, 88K init) Calibrating delay loop... 89.70 BogoMIPS (lpj=3D448512) Mount-cache hash table entries: 512 CPU: Testing write buffer coherency: ok checking if image is initramfs...it isn't (bad gzip magic numbers); looks like a n initrd Freeing initrd memory: 5120K NET: Registered protocol family 16 NET: Registered protocol family 2 IP route cache hash table entries: 128 (order: -3, 512 bytes) TCP established hash table entries: 512 (order: -1, 2048 bytes) TCP bind hash table entries: 256 (order: -2, 1024 bytes) TCP: Hash tables configured (established 512 bind 256) TCP reno registered NetWinder Floating Point Emulator V0.97 (double precision) io scheduler noop registered io scheduler anticipatory registered (default) AT91 Watchdog Timer enabled (5 seconds, nowayout) at91_usart.0: ttyS0 at MMIO 0xfefff200 (irq =3D 1) is a AT91_SERIAL at91_usart.1: ttyS1 at MMIO 0xfffc4000 (irq =3D 7) is a AT91_SERIAL RAMDISK driver initialized: 16 RAM disks of 10000K size 1024 blocksize eth0: Link now 10ernet at 0efbc000 int=3D24 100-FullDuplex (12:34:56:c) eth0: ealtek RTL8201(B)L PHY Uniform Multi-Platform E-IDE driver Revision: 7.00alpha2 ide: Assuming 50MHz system bus speed for PIO modes; override with idebus=3Dxx at91_cf: irqs det #1110 cs: : pmcia_register_socket(0xc019fda8) at91_cf: Vcc 0, io_irq 0, flags 0000 csc 0080 cs: pcmcia_socket0: parse_events: events 00000080 mice: PS/2 mouse device common for all mice at91_rtc at91_rtc: rtc intf: sysfs at91_rtc at91_rtc: rtc intf: proc at91_rtc at91_rtc: rtc intf: dev (253:0) at91_rtc at91_rtc: rtc core: registered at91_rtc as rtc0 AT91 Real Time Clock driver. MMC: 4 wire bus mode not supported by this driver - using 1 wire TCP bic registered NET: Registered protocol family 1 NET: Registered protocol family 17 RAMDISK: ext2 filesystem found at block 0 RAMDISK: Loading 5000KiB [1 disk] into ram disk... done. VFS: Mounted root (ext2 filesystem).