David et al;
In my seemingly neverending effort to get linux up on the ML403, I went the
route David B. did and worked with the xapp902 reference desing. I have met
with a little success and appeal for some assistance...
1. The uart is dog slow. I suspect it has to do with interrupts (note the
console dump below). I see this line:
[ 2.637345] uartlite.0: ttyUL0 at MMIO 0xa0000000 (irq =
and I think that the interrupt isn't properly registered with the PIC.
What do you think?
2. Can you look below and comment on the ram disk size? I am not sure what
this value should be. My ramdisk
image is 4658942 bytes. I recall reading somewhere that the value for the
initrd ram disk should be about 10k larger
than the ramdisk size to allow for decompression. The # of pages and page
size is throwing me off. Comments?
-corley
===================== console dump ==========================
[ 0.000000] Linux version 2.6.17.1 ([EMAIL PROTECTED]) (gcc version 3.4.2)
#2 Mon Oct 23 17:58:11 UTC 2006
[ 0.000000] Xilinx ML403 Reference System (Virtex-4 FX)
[ 0.000000] Built 1 zonelists
[ 0.000000] Kernel command line: console=ttyUL0 single ip=off root=/dev/ram
rw
[ 0.000000] Xilinx INTC #0 at 0xD1000FC0 mapped to 0xFDFFFFC0
[ 0.000000] PID hash table entries: 512 (order: 9, 2048 bytes)
[ 0.000151] Console: colour dummy device 80x25
[ 0.000560] Dentry cache hash table entries: 8192
[ 0.001271] Inode-cache hash table entries: 4096 (order: 2, 16384 bytes)
[ 0.013924] Memory: 58572k available (1348k kernel code, 344k data, 80k
init, 0k highmem)
[ 0.200435] Mount-cache hash table entries: 512
[ 0.203108] checking if image is initramfs...it isn't (no cpio magic); looks
like an initrd
[ 2.504612] Freeing initrd memory: 4549k freed
[ 2.508719] NET: Registered protocol family 16
[ 2.518260] NET: Registered protocol family 2
[ 2.583989] IP route cache hash table entries: 51
[ 2.584467] TCP established hash table entries: 2048 (order: 3, 32768 bytes)
[ 2.584936] TCP bind hash table entries: 1024 (order: 2, 20480 bytes)
[ 2.585222] TCP: Hash tables configured (established 2048 bind 1024)
[ 2.585257] TCP reno registered
[ 2.591657] io scheduler noop registered
[ 2.591817] io scheduler anticipatory registered (default)
[ 2.591912] io scheduler deadline registered
[ 2.592049] io scheduler cfq registered
[ 2.637345] uartlite.0: ttyUL0 at MMIO 0xa0000000 (irq =
[ 40.942337] RAMDISK driver initialized: 16 RAM disks of 4096K size 1024
block size
[ 42.944862] eth%d: XTemac using sgDMA mode.
[ 44.072738] eth%d: XTemac buffer_descriptor_space: phy: 0xbb8000, virt:
0xff1 00000, size: 0x5000
[ 46.424830] eth0: Xilinx TEMAC #0 at 0x60000000 mapped to 0xC5008000, irq=0
[ 48.289878] mice: PS/2 mouse device common for all mice
[ 49.694042] TCP bic registered
[ 50.524157] RAMDISK: Compressed image found at block 0
[ 52.672304] RAMDISK: incomplete write (-28 != 3276
[ 56.000551] VFS: Mounted root (ext2 filesystem).
[ 57.243671] Freeing unused kernel memory: 80k init
[ 58.579050] attempt to access beyond end of device
[ 59.867968] ram0: rw=0, want=10018, limit=8192
[ 61.064912] Buffer I/O error on device ram0, logical block 5008
[ 62.653149] attempt to access beyond end of device
[ 63.942154] ram0: rw=0, want=10020, limit=8192
[ 65.139082] Buffer I/O error on device ram0, logical block 5009
[ 66.727305] attempt to access beyond end of device
[ 68.016306] ram0: rw=0, want=10022, limit=8192
[ 69.212688] BUG: soft lockup detected on CPU#0!
[ 69.212711] Call Trace:
[ 69.212733] [C024F780] [C000906C] show_stack+0x48/0x194 (unreliable)
[ 69.212808] [C024F7C0] [C0031874] softlockup_tick+0xb4/0xd0
[ 69.212853] [C024F7E0] [C001DDE8] run_local_timers+0x18/0x28
[ 69.212905] [C024F7F0] [C001DE70] update_process_times+0x78/0xb4
[ 69.212956] [C024F810] [C00045B4] timer_interrupt+0xd4/0x204
[ 69.213000] [C024F850] [C000351C] ret_from_except+0x0/
[ 69.213043] [C024F910] [C0015A9C] release_console_sem+0xe0/0x284
[ 69.213105] [C024F950] [C0015DF4] vprintk+0x1b4/0x384
[ 69.213149] [C024F9F0] [C0016014] printk+0x50/0x60
[ 69.213189] [C024FA70] [C00B98DC] generic_make_request+0xc0/0x20c
[ 69.213252] [C024FAB0] [C00B9AA8] submit_bio+0x80/0xd8
[ 69.213294] [C024FAF0] [C005602C] submit_bh+0x14c/0x1a0
[ 69.213342] [C024FB10] [C005854C] block_read_full_page+0x310/0x328
[ 69.213391] [C024FB80] [C007D4FC] do_mpage_readpage+0x38c/0x538
[ 69.213437] [C024FC00] [C007D880] mpage_readpage+0x50/0x78
[ 69.213477] [C024FC50] [C00B0120] ext2_readpage+0x1c/0x2c
[ 69.213516] [C024FC60] [C0034824] read_cache_page+0xf8/0x208
[ 69.213562] [C024FC90] [C00AD490] ext2_get_page+0x24/0x308
[ 69.213623] [C024FCC0] [C00ADAE8] ext2_find_entry+0x7c/0x17c
[ 69.213663] [C024FD10] [C00ADC78] ext2_inode_by_name+0x18/0x58
[ 69.213704] [C024FD30] [C00B191C] ext2_lookup+0x54/0xd8
[ 69.213744] [C024FD50] [C0062E4C] do_lookup+0x138/0x19c
[ 69.213793] [C024FD80] [C0063918] __link_path_walk+0x8f4/0x1014
[ 69.213837] [C024FDD0] [C00640C0] link_path_walk+0x88/0x150
[ 69.213879] [C024FE40] [C006432C] do_path_lookup+0x1a4/0x2b8
[ 69.213924] [C024FE70] [C006452C] __path_lookup_intent_open+0x58/0xb8
[ 69.213971] [C024FEA0] [C0064F14] open_namei+0x70/0x6dc
[ 69.214015] [C024FEE0] [C00519E4] do_filp_open+0x30/0x78
[ 69.214056] [C024FF50] [C0051E04] do_sys_open+0x70/0x10c
[ 69.214095] [C024FF80] [C0002618] init+0x274/0x2e0
[ 69.214137] [C024FFF0] [C00051FC] kernel_thread+0x44/0x60
[ 117.445261] Buffer I/O error on device ram0, logical block 5010
[ 119.033233] attempt to access beyond end of device
[ 120.322015] ram0: rw=0, want=10018, limit=8192
[ 121.518738] Buffer I/O error on device ram0, logical block 5008
[ 123.106686] attempt to access beyond end of device
[ 124.395468] ram0: rw=0, want=10020, limit=8192
[ 125.592200] Buffer I/O error on device ram0, logical block 5009
[ 127.180152] attempt to access beyond end of device
[ 128.468929] ram0: rw=0, want=10022, limit=8192
[ 129.665650] Buffer I/O error on device ram0, logical block 5010
[ 131.253675] attempt to access beyond end of device
[ 132.542475] ram0: rw=0, want=100
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