Walnut405 PPC hang prob at linux startup
Hi
I am using u-boot 1.0.0, and am loading linux kernel at 400000, it appears to hang after printing message
- "Warning: real time clock seems stuck!"
My linux kernel version is 2.4.18
I have put additional kprint in main.c and am able to track it down to between the lines
. . .
kmem_cache_init();
sti();
. .
I have tried to set clocks_in_mhz to 1 through the setenv command and it did not help.
I have already checked time.c and it is 1.35 11/28/01, and has the following code
if (ppc_md.get_rtc_time) {
stamp = get_native_tbl();
sec = ppc_md.get_rtc_time();
elapsed = 0;
do {
old_stamp = stamp;
old_sec = sec;
stamp = get_native_tbl();
if (__USE_RTC() && stamp < old_stamp) old_stamp -=
1000000000;
elapsed += stamp - old_stamp;
sec = ppc_md.get_rtc_time();
} while ( sec == old_sec && elapsed < 2*HZ*tb_ticks_per_jiffy);
if (sec==old_sec) {
printk("Warning: real time clock seems stuck!\n"); }
write_lock_irqsave(&xtime_lock, flags); xtime.tv_sec = sec;
last_jiffy_stamp(0) = tb_last_stamp = stamp; xtime.tv_usec = 0;
/* No update now, we just read the time from the RTC ! */ last_rtc_update = xtime.tv_sec; write_unlock_irqrestore(&xtime_lock, flags);
} else {
stamp = get_native_tbl();
last_jiffy_stamp(0) = tb_last_stamp = stamp;
}
I will appreciate any helpregarding this.
Thanks
A. Dadabhoy
Quoted 2 lines · In message <[email protected]> you wrote:
My linux kernel version is 2.4.18
...
Quoted 2 lines
I have tried to set
clocks_in_mhzto 1 through the setenv command and it did not help.
It cannot help, as it is completely wrong. You must UNDEFINE the variable.
Best regards,
Wolfgang Denk
Signature · 3 lines
See us @ Embedded World, Nuremberg, Feb 17 - 19, Hall 12.0 Booth 440 Phone: (+49)-8142-4596-87 Fax: (+49)-8142-4596-88 Email: wd at denx.de Democracy is mob rule, but with income taxes.
Thank for a quick reply.
I forgot to mention that tries both ways, i.e. I also undefined the variable and yet it fails. Any other suggestion ?
Thanks
Quoted 17 lines · Wolfgang Denk
Quoted 2 lines · In message <[email protected]> you wrote:
My linux kernel version is 2.4.18
...
Quoted 2 lines
I have tried to set
clocks_in_mhzto 1 through the setenv command and it did not help.It cannot help, as it is completely wrong. You must UNDEFINE the variable.
Best regards,
Wolfgang Denk
--
See us @ Embedded World, Nuremberg, Feb 17 - 19, Hall 12.0 Booth 440
Phone: (+49)-8142-4596-87 Fax: (+49)-8142-4596-88 Email: wd at denx.de Democracy is mob rule, but with income taxes.