Denys Vlasenko wrote:
On Tuesday 25 January 2011 14:51, Michal Simek wrote:
Denys Vlasenko wrote:
On Monday 24 January 2011 21:03, Peter Korsgaard wrote:
"Jim" == Cathey, Jim <[email protected]> writes:
This thread started by Michal, who's trying to use a very slow
serial-over-jtag setup on microblaze, and had issues with characters
getting lost when getty started up (because of the tcflush), so we
wanted to add a tcdrain() instead.
Unfortunately, Michal did not provide much of information:
what is the speed of his serial link?
There is no HW setting about baudrate in HW. It is Jtag hw console -
xilinx mdm IP. It is compatible with uartlite Kernel driver.
http://www.xilinx.com/support/documentation/ip_documentation/mdm.pdf
But it does work at SOME speed, right? How many chars per second
do you see appearing on the screen?
look below.
Some logs below.
Thanks,
Michal
1. Current behavior:
[ 42.297299] < 0.417384> Running local start scripts.
[ 42.499939] < 0.202640> Mounting sysfs:
[ 42.912690] < 0.412751> mdev: initialising /dev
[ 43.120934] < 0.208244> Mounting /etc/config:
[ 43.523944] < 0.403010> Populating /etc/config:
[ 44.528967] < 1.005023> flatfsd: Created 8 configuration files (168 net eth0: Promiscuous mode
disabled.
[ 44.529072] < 0.000105> bytes)
[ 44.736594] < 0.207522> Mounting devpts:
[ 45.137225] < 0.400631> Setting hostname:
[ 45.536748] < 0.399523> Bringing up network interfaces:
[ 45.739614] < 0.202866> udhcpc (v1.18.2) started
[ 46.137376] < 0.397762> Sending discover.
[ 47.229770] < 1.092394> Xilinx-SP605-LTP-full-WB-pc-msr-next-22-watch-wt-mdm
login:
2. sleep(3):
[ 45.882825] < 0.405516> Bringing up network interfaces:
[ 46.082834] < 0.200009> udhcpc (v1.18.2) started
[ 46.483630] < 0.400796> Sending discover...
[ 46.884336] < 0.400643> Sending select for 192.168.0.100...
[ 47.482714] < 0.598378> Lease of 192.168.0.100 obtained, lease time 7200
[ 47.878229] < 0.395515> Starting portmap:
[ 47.878281] < 0.000052>
[ 47.878298] < 0.000017> Welcome to
[ 48.474868] < 0.596570> _____ _ _ _
[ 48.877371] < 0.402503> | ___ \ | | | | (_)
[ 49.264710] < 0.387339> | |_/ / ___ | |_ __ _ |
[ 50.058137] < 0.793427> Xilinx-SP605-LTP-full-WB-pc-msr-next-22-watch-wt-mdm
login:
Looks like the speed is less than 100 chars/sec.
Something like that.
Michal
--
Michal Simek, Ing. (M.Eng)
w: www.monstr.eu p: +42-0-721842854
Maintainer of Linux kernel 2.6 Microblaze Linux - http://www.monstr.eu/fdt/
Microblaze U-BOOT custodian
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