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From: "jerry" <jerry.nguyen@serialsystem.com.sg>
To: <linuxppc-embedded@lists.linuxppc.org>
Subject: how to get the physival address
Date: Thu, 5 Apr 2001 12:13:29 +0800	[thread overview]
Message-ID: <001001c0bd86$c54562a0$de0fa8c0@mystore> (raw)
In-Reply-To: 20010404155419.8B369281DB@denx.denx.de


Hi All,

I have a silly question but seem I can not figure out the answer myself. I
try write a driver, in which I define a array like"

file : dummy.o

unsigned  char buffer_array[4096];

....

bdp->cbd_bufaddr  =  __pa(buffer_array);


my problem is: I try to get the physical address of buffer array, but the
_pa did not return correct address.

I try to print out:  buffer_array = 0xC4056220
                        _pa(buffer_array) = 0x4056220

But my RAM only 16M = 0x100000

My question is: how to get the physical address of buffer_array.

Thank for any answer
Jerry


** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/

  reply	other threads:[~2001-04-05  4:13 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2001-04-04  0:57 gdb load address and KERNELLOAD Wang Yong
2001-04-04  2:05 ` Dan Malek
2001-04-04  6:42   ` Wolfgang Denk
2001-04-04 15:30     ` Dan Malek
2001-04-04 15:54       ` Wolfgang Denk
2001-04-05  4:13         ` jerry [this message]
2001-04-05  5:58           ` how to get the physival address Dan Malek
2001-04-05  6:28             ` jerry
2001-04-05  6:30               ` Dan Malek
2001-04-05  9:16             ` Gabriel Paubert
  -- strict thread matches above, loose matches on Subject: below --
2001-04-05 16:58 Hua Ji

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