Re: Need help booting linux on my 8265 board

["sunrays" <lm_mailbox@sohu.com>]

Need help booting linux on my 8265 boardHello,Mr Pereira

   thanks for your reply.
   I'm sure  IMMR base is the same for both U-boot and Linux. Uboot mapped at 0xfff00000, but I want to know why linux mapped at 0xC0000000 , the uboot say   "## Transferring control to Linux (at address 00000000) ...", so KERNELLOAD should be 0xc0000000 or 0x00000000?
    and if I use linux kernel 2.4.20,  CONFIG_CLOCKS_IN_MHZ should be 0 or 1?


Best Regards
Ming Liu


----- Original Message -----
From: Flavio Pereira
To: liuming ; linuxppc-embedded@lists.linuxppc.org
Cc: liuming
Sent: Monday, April 19, 2004 3:24 PM
Subject: RE: Need help booting linux on my 8265 board


Hi

Make sure that your IMMR base is the same for both U-boot and Linux. Ensure that they are both mapped above the virtual meomry base (0xC0000000) used by Linux, else you will have problems once ypou start to execute code.

Regards
Flavio Pereira



From: owner-linuxppc-embedded@lists.linuxppc.org on behalf of liuming
Sent: Sun 2004/04/18 06:33 PM
To: linuxppc-embedded@lists.linuxppc.org
Cc: liuming
Subject: Need help booting linux on my 8265 board




Hi,
  I have problem booting linux on my 8265 board. Both u-boot and ppcboot
run well, but when I boot the linux kernel, the board be dead. At this
time the registers look like to be some default values(use powertap
pro). I try u-boot1.1, ppcboot1.1.5; linux kernel 2.4.4 2.4.18 2.4.20.

(1)about compile kernel
vim Makefile,        arch=ppc CROSS_COMPILE=ppc_82xx-
vim arch/ppc/platforms/ads826x.h,      IMAP_ADDR=0x04700000 BCSR=0x04500000

then make mrproper/ make ads826x_config/ make oldconfig/ make dep/ make
pImage (bd info struct is quite same between uboot and linux)

Is there anything I had ignored?

(2)let's see!(I add some "printf" to display values,
"console=ttyS0,9600" is added)
=> bootm ffa00000 ffc00000
## Booting image at ffa00000 ...
   Image Name:   Linux-2.4.20-pre7ncsd1
   Image Type:   PowerPC Linux Kernel Image (gzip compressed)
   Data Size:    634729 Bytes = 619 kB = 0 MB
   Load Address: 00000000
   Entry Point:  00000000
   Verifying Checksum ... OK
   Uncompressing Kernel Image ... OK
## Current stack ends at 0x03F7FC48 => set upper limit to 0x00800000
## cmdline at 0x007FFF00 ... 0x007FFF23
memstart    = 0x00000000
memsize     = 0x04000000
flashstart  = 0xFF800000
flashsize   = 0x00800000
flashoffset = 0x00000000
sramstart   = 0x00000000
sramsize    = 0x00000000
immr_base   = 0x04700000
bootflags   = 0x00000001
vco         = 266.666 MHz
sccfreq     = 66.666 MHz
brgfreq     = 16.666 MHz
intfreq     = 166.666 MHz
cpmfreq     = 133.333 MHz
busfreq     = 33.333 MHz
ethaddr     = 00:10:EC:00:30:8C
IP addr     = 8.6.0.1
baudrate    =   9600 bps
## Loading RAMDisk Image at ffc00000 ...
   Image Name:   Simple Ramdisk-Image
   Image Type:   PowerPC Linux RAMDisk Image (gzip compressed)
   Data Size:    567988 Bytes = 554 kB = 0 MB
   Load Address: 00000000
   Entry Point:  00000000
   Verifying Checksum ... OK
## initrd at 0xFFC00040 ... 0xFFC8AAF3 (len=567988=0x8AAB4)
   Loading Ramdisk to 03ef4000, end 03f7eab4 ... OK
## Transferring control to Linux (at address 00000000) ...

then the board is dead and the LED(FCC link) coruscate . (I have
modified clock calculations for this board so SCC can output message.
it's the reason?) any ideas? thanks a lot!

--
liu
lm_mailbox@sohu.com


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