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ADM5120: time.c issues ?

DISCUSSION Tom Vrána 3 participants 3 messages Feb 7, 2005 – Feb 8, 2005 MIPS

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Tom Vrána

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Hi,

I made my attempt to port ADM5120 stuff from the prehistoric 2.4.18 kernel to recent 2.4.27-mipscvs. I get to boot, but:

time.c originally uses:
extern unsigned int mips_counter_frequency;
from timex.h

but in 2.4.27 the timex.h changed to:
extern unsigned int mips_hpt_frequency;

Jeroen uses just a localy defined mips_counter_frequency in his 2.6.x port.

Using jeroens time.c the system boots painfully slow, sort of loops int the beginning and the finally freezes on the FPU emulator... any suggestions ?

Thanks Tom

LINUX/5120 started...
CPU revision is: 0001800b
Primary instruction cache 8kB, physically tagged, 2-way, linesize 16 bytes.
Primary data cache 8kB, 2-way, linesize 16 bytes.
Linux version 2.4.27-mipscvs-20050128 (tom@jackal) (gcc version 3.2) #11 Po .ono 7 19:12:23 CET 2005 am5120_setup() starts.
System has PCI BIOS
Determined physical RAM map:
memory: 00d2a000 @ 002d6000 (usable)
Initial ramdisk at: 0x80157000 (1404928 bytes)
On node 0 totalpages: 4096
zone(0): 4096 pages.
zone(1): 0 pages.
zone(2): 0 pages.
Kernel command line: root=/dev/ram0 console=ttyS0
CPU clock: 175MHz
CPU revision is: 0001800b
Primary instruction cache 8kB, physically tagged, 2-way, linesize 16 bytes.
Primary data cache 8kB, 2-way, linesize 16 bytes.
Linux version 2.4.27-mipscvs-20050128 (tom@jackal) (gcc version 3.2) #11 Po .ono 7 19:12:23 CET 2005 am5120_setup() starts.
System has PCI BIOS
Determined physical RAM map:
memory: 00d2a000 @ 002d6000 (usable)
Initial ramdisk at: 0x80157000 (1404928 bytes)
On node 0 totalpages: 4096
zone(0): 4096 pages.
zone(1): 0 pages.
zone(2): 0 pages.
Kernel command line: root=/dev/ram0 console=ttyS0
CPU clock: 175MHz
Calibrating delay loop... 174.48 BogoMIPS
Memory: 13292k/13480k available (1160k kernel code, 188k reserved, 1464k data, 88k init, 0k highmem) Dentry cache hash table entries: 2048 (order: 2, 16384 bytes)
Inode cache hash table entries: 1024 (order: 1, 8192 bytes)
Mount cache hash table entries: 512 (order: 0, 4096 bytes)
Buffer cache hash table entries: 1024 (order: 0, 4096 bytes)
Page-cache hash table entries: 4096 (order: 2, 16384 bytes)
Checking for 'wait' instruction... available.
POSIX conformance testing by UNIFIX
Autoconfig PCI channel 0x801568c8
Scanning bus 00, I/O 0x11500000:0x115ffff0, Mem 0x11400000:0x11500000
00:00.0 Class 0600: 1317:5120
Mem unavailable -- skipping
I/O unavailable -- skipping
00:02.0 Class 0200: 168c:0013 (rev 01)

       Mem at 0x11400000 [size=0x10000]

Linux NET4.0 for Linux 2.4
Based upon Swansea University Computer Society NET3.039
Initializing RT netlink socket
Starting kswapd
pty: 256 Unix98 ptys configured
Serial driver version 5.05c (2001-07-08) with MANY_PORTS SHARE_IRQ SERIAL_PCI enabled ttyS28 at 0x03f8 (irq = 4) is a 16450
ttyS29 at 0x02f8 (irq = 3) is a 16450
ttyS30 at 0x03e8 (irq = 4) is a 16450
RAMDISK driver initialized: 16 RAM disks of 5120K size 1024 blocksize Initializing Cryptographic API
NET4: Linux TCP/IP 1.0 for NET4.0
IP Protocols: ICMP, UDP, TCP
IP: routing cache hash table of 512 buckets, 4Kbytes
TCP: Hash tables configured (established 1024 bind 2048)
NET4: Unix domain sockets 1.0/SMP for Linux NET4.0.
RAMDISK: Compressed image found at block 0
Freeing initrd memory: 1372k freed
VFS: Mounted root (ext2 filesystem) readonly.
Freeing prom memory: 0kb freed
Freeing unused kernel memory: 88k freed
Algorithmics/MIPS FPU Emulator v1.5

Signature · 5 lines
Tomas Vrana  <[email protected]>
--------------------------
VODA IT consulting, Borkovany 48, 691 75
http://www.voda.cz/
phone: +420 519 419 416 mobile: +420 603 469 305 UIN: 105142752
#2 lore raw
In reply to Tom Vrána
Quoted 2 lines · Tom Vrána

Using jeroens time.c the system boots painfully slow, sort of loops int the beginning and the finally freezes on the FPU emulator... any suggestions ?

The 2.6.10 kernels I compiled don't seem slow to me.. So there is some difference between those two... (Is there a reason you need a 2.4 kernel instead of 2.6?)

Quoted 4 lines

ttyS28 at 0x03f8 (irq = 4) is a 16450
ttyS29 at 0x02f8 (irq = 3) is a 16450
ttyS30 at 0x03e8 (irq = 4) is a 16450

This might have something to do with it... I don't think this serial driver should be used. There might be more unneeded stuff in your kernel that might do funny things.

Jeroen