From: Dell Query <dell.query@yahoo•com>
To: Josh Boyer <jwboyer@gmail•com>, linuxppc-embedded@ozlabs•org
Subject: Re: Unable to Read PPC440EPx Board ID thru Board Control and Status Registers (BCSR)
Date: Tue, 27 Nov 2007 22:38:00 -0800 (PST) [thread overview]
Message-ID: <639733.2036.qm@web45601.mail.sp1.yahoo.com> (raw)
In-Reply-To: <20071127212548.3efd39e9@vader.jdub.homelinux.org>
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Oh is it 0x1C0002000?
Where can I get the document? What I have is 0xC0002000 from ep440xc_um_amcc.pdf file that I get from the accompanying PPC440EPx resource CD.
Thanks!
dell
Josh Boyer <jwboyer@gmail•com> wrote: On Tue, 27 Nov 2007 02:47:45 -0800 (PST)
Dell Query wrote:
> Hi,
>
> I am creating a simple program which will try to read the board ID of the PPC440EPx thru BCSR but when I load it, it gives me "Data Read PLB Error".
>
> I am not sure if I missed out something.
>
> I would really appreciate it if somebody could help me on this.
>
> I have posted the source code below, as well as the complete message.
>
> Many thanks!
>
> SOURCE CODE:
> ----------------------------------------------------------------------
> #include
> #include
> #include
> #include
> #include
> #include
> #include
> #include
> #include
> #include
> #include
> #include
> #include
>
> MODULE_LICENSE("GPL");
>
> #define BCSR_BASE 0xC0002000
This is wrong. It's 0x1C0002000.
> #define BCSR0 0
> #define BCSR1 1
> #define BCSR2 2
>
> #define USER_LED 0x2
> #define SIZE_TO_MAP 10
>
> #define LED_ON 0
>
> uint __iomem *bcsrbase = NULL;
>
> static int __init initFunction(void) {
> uint tmp;
> printk("<1> Calling init function.\n");
> printk("<1> bcsrbase value %p...\n",bcsrbase);
> printk("<1> Remapping %x...\n",BCSR_BASE);
> /*map*/
> bcsrbase = ioremap(BCSR_BASE, SIZE_TO_MAP);
Since this seems to be arch/ppc, use ioremap64.
josh
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next prev parent reply other threads:[~2007-11-28 8:26 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-11-27 10:47 Unable to Read PPC440EPx Board ID thru Board Control and Status Registers (BCSR) Dell Query
2007-11-28 3:25 ` Josh Boyer
2007-11-28 6:38 ` Dell Query [this message]
2007-11-28 10:51 ` Stefan Roese
2007-11-29 3:16 ` Dell Query
2007-11-29 6:10 ` Stefan Roese
2007-11-29 6:41 ` Dell Query
2007-11-29 6:56 ` Stefan Roese
2007-11-29 10:01 ` Dell Query
2007-11-29 10:13 ` Stefan Roese
2007-12-03 7:17 ` Dell Query
2007-12-04 9:28 ` Stefan Roese
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