Re: Problem in Cross compiling Pwlib for LINUX

Re: Problem in Cross compiling Pwlib for LINUX

[Ale ppc]

Hi Arunkumar,


I have changed ptbuildopts.mak in this way :

    ENDLDLIBS += -lpthread -lcrypto -lresolv

    HAS_OPENSSL =
    HAS_OPENLDAP =
    HAS_EXPAT =
    HAS_SDL =
    TRY_1394AVC =
    TRY_1394DC =

and in ptbuildopts.h undefine :

    #define P_LDAP 1
    #define P_EXPAT 1
    #define P_SSL 1
    #define P_USE_SYSTEM_SWAB 1

I have erased the default library lber, dap, dap_r, ssl, expat, dl because I
did not need of them.
In fact then I have well cross-compiled openH323 src file.
To test my board I have used the callgen323 (v 1.2.6) application program
that came from openh323 sourceforge site.
I don't test other application prg.

Because I work fine with Motorola MPC82xx and ARM7TDMI tecnology, and we are
interested to port H323 on uClinux for ARM7 too. But we have found several
problems using siap-uClinx-xx cross-compile tool. If you know about related
problem can give me a search path to solve the question?

Regards,
Alessandro


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question on PPC performance

[John Zhou]

Dear all,

I have an question on PPC performance:

I have linux running based on mpc8250 with 200/166/66 clock configuration. But, I found that every CPU instruction used about 5 ns when accessing SDRAM, otherwise, every CPU instruction used about 15 ns when accessing other devices such as port A/B/C/D, immr, etc, except accessing SDRAM.

Thanks any help!

John
=================================================
The function I used is:
void performance_test(void)
{
					unsigned long i, d1, d2;
					static unsigned long kkk;
					unsigned short time;
					volatile unsigned long* portC = ( volatile unsigned long*)0xF0010D50;

					volatile unsigned long * tmp = &kkk;
					*(volatile unsigned char*)0xF0010D80 &= ~0xB0;
					*(volatile unsigned short*)0xF0010D92 = 0x0002;
					*(volatile unsigned char*)0xF0010D80 |= 0x10;

 					*(volatile unsigned long*)0xF0010D44 &= ~0x00000002;
					d1 = *(volatile unsigned long*)0xF0010D50;
					d1 &= ~0x00000003;
					d2 = d1 | 0x00000002;
					d1 |= 0x00000001;

					*(volatile unsigned short*)0xF0010D9E = 0;
					for (i=0; i<1000; i++)
					{

						*portC = d1;
						*portC = d2;
					}
					time = *(volatile unsigned short*)0xF0010D9E;
					printk ("#test2: 2 access loop 1000 times use %dns\r\n", time*15);

					*(volatile unsigned short*)0xF0010D9E = 0;
					for (i=0; i<1000; i++)
					{

						*tmp = d1;
						*tmp = d2;
					}
					time = *(volatile unsigned short*)0xF0010D9E;
					printk ("#test3: 2 access loop 1000 times use %dns\r\n", time*15);
}

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RE: question on PPC performance

[John Zhou]

my questions is:

why is it 15 ns when accessing other devices such as port A/B/C/D, immr, etc, except accessing SDRAM, but about 5 ns when accessing SDRAM?

Thanks in advance!
John

-----Original Message-----
From: owner-linuxppc-embedded@lists.linuxppc.org
[mailto:owner-linuxppc-embedded@lists.linuxppc.org]On Behalf Of John
Zhou
Sent: Friday, January 30, 2004 6:22 PM
To: 'linuxppc-embedded'
Subject: question on PPC performance



Dear all,

I have an question on PPC performance:

I have linux running based on mpc8250 with 200/166/66 clock configuration. But, I found that every CPU instruction used about 5 ns when accessing SDRAM, otherwise, every CPU instruction used about 15 ns when accessing other devices such as port A/B/C/D, immr, etc, except accessing SDRAM.

Thanks any help!

John
=================================================
The function I used is:
void performance_test(void)
{
					unsigned long i, d1, d2;
					static unsigned long kkk;
					unsigned short time;
					volatile unsigned long* portC = ( volatile unsigned long*)0xF0010D50;

					volatile unsigned long * tmp = &kkk;
					*(volatile unsigned char*)0xF0010D80 &= ~0xB0;
					*(volatile unsigned short*)0xF0010D92 = 0x0002;
					*(volatile unsigned char*)0xF0010D80 |= 0x10;

 					*(volatile unsigned long*)0xF0010D44 &= ~0x00000002;
					d1 = *(volatile unsigned long*)0xF0010D50;
					d1 &= ~0x00000003;
					d2 = d1 | 0x00000002;
					d1 |= 0x00000001;

					*(volatile unsigned short*)0xF0010D9E = 0;
					for (i=0; i<1000; i++)
					{

						*portC = d1;
						*portC = d2;
					}
					time = *(volatile unsigned short*)0xF0010D9E;
					printk ("#test2: 2 access loop 1000 times use %dns\r\n", time*15);

					*(volatile unsigned short*)0xF0010D9E = 0;
					for (i=0; i<1000; i++)
					{

						*tmp = d1;
						*tmp = d2;
					}
					time = *(volatile unsigned short*)0xF0010D9E;
					printk ("#test3: 2 access loop 1000 times use %dns\r\n", time*15);
}


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RE: Problem in Cross compiling Pwlib for LINUX

[Antonello Lombardinilo]

Hi all,
I work on embedded system based on MPC860L. I cross compiled PWLIB 1.5.2 in
the
following way:
1) Edit file ~/pwlib/configure, commenting the sentences => "cannot check"
2) $ ./configure --host=ppc-linux --target=ppc-linux
3) Edit file ~/pwlib/include/ptbuildopts.h and undefine:
     #undefine P_LDAP
     #undefine P_EXPAT
     //#define P_SSL 1
     //#define USE_SYSTEM_SWAB 1
4) Edit file ~/pwlib/ptbuildopts.mak:
     CC=ppc-linux-gcc
     CPLUS=ppc-linux-g++
  change ENDLIBS flag in this way:
     ENDLIBS += -lpthread -lcrypto -lresolv
  and setting flag as following:
     HAS_OPENSSL =
     HAS_OPENLDAP =
     HAS_EXPAT =
     HAS_SDL =
     TRY_1394AVC =
     TRY_1394DC =
5) Alter ~/pwlib/src/ptlib/unix/Makefile this:
    repalce:
        VIDEO_CAPTURE_SOURCE = video4linux.cxx
    with:
        VIDEO_CAPTURE_SOURCE = dummyvideo.cxx
6) $ make optnoshared

I then compiled OpenH323 in the following way:
1) Edit file ~/pwlib/configure, commenting the sentences => "cannot check"
2) copy file for asnparser for x86 patform in PWLIB directory
3) add LDFLAGS	    += -L/opt/eldk/ppc_8xx/usr/lib/gcc-lib/ppc-linux/2.95.4/
  to file ~/opnh323/openh323u.mak
3) make optnoshared

The problem is that when I lanch example application
~/opnh323/samples/simple/obj_linux_ppc_r/simph323
a segnemtation fault verified.
Do we have any suggestion?
Do we have cross compiled in correct way? (I'am using eldk from denx)
Could anyone explain me how I have to cross compile?

Thanks

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