From: Jan Damborsky <jan.damborsky@devcom.cz>
To: Wolfgang Denk <wd@denx.de>, linuxppc-dev@lists.linuxppc.org
Subject: Re: MPC823E SMC/I2C/SPI micropatch
Date: Mon, 26 Jan 2004 10:25:49 +0100 [thread overview]
Message-ID: <4014DD1D.8070704@devcom.cz> (raw)
In-Reply-To: <20040126080100.26782C108D@atlas.denx.de>
I think I have selected the __correct__ one.
Situated in ./arch/ppc/8xx_io/micropatch_850.c file.
- relocates I2C, SPI, SMC parameter RAM.
- it is determined for 850 and 823E processors (I hope).
- I had to define USE_SMC_PATCH and write some
additional code for relocating SMC parameter RWM
in cpm_load_patch() function (./arch/ppc/8xx_io/micropatch.c)
as well as in SMC UART code (./arch/ppc/8xx_io/uart.c).
More additional hacks needed:
* original RPBASE set to 0x400 clashed with SMC micropatch
so I redefined it to 0x800
* when used ethernets on SCC2,SCC3 with CONFIG_ENET_BIG_BUFFERS
enabled, they need 2kB of DPRAM - it cannot fit together with
micropatch in first 4kB of DPRAM, so I redefined
CPM_DATAONLY_BASE to 0x1000 and CPM_DATAONLY_SIZE to 0x0c00
And for now, I have SCC2,SCC3 ethernets
and SMC1,SMC2 UARTs working altogether.
Sincerely, Jan Damborsky
Wolfgang Denk wrote:
> In message <4014C088.1020208@devcom.cz> you wrote:
>
>>I have found out that CPM micropatch
>>available in linux-2.4 from Wolfgang Denk
>>site (the kernel we use successfuly on our
>>custom boards at present) is applicable as well.
>
>
> You have to select the _correct_ uCode patch.
>
> There is one patch for the MPC850, and another one for all other 8xx
> processors. And there is the USB SOF potch for the MPC823.
>
>
> 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@denx.de
> Another dream that failed. There's nothing sadder.
> -- Kirk, "This side of Paradise", stardate 3417.3
>
>
>
** Sent via the linuxppc-dev mail list. See http://lists.linuxppc.org/
next prev parent reply other threads:[~2004-01-26 9:25 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-01-19 16:29 MPC823E SMC/I2C/SPI micropatch Steven Blakeslee
2004-01-19 16:44 ` Jan Damborsky
2004-01-26 7:23 ` Jan Damborsky
2004-01-26 8:00 ` Wolfgang Denk
2004-01-26 9:25 ` Jan Damborsky [this message]
2004-01-26 9:33 ` Wolfgang Denk
2004-01-26 10:29 ` Jan Damborsky
2004-01-26 11:31 ` Wolfgang Denk
2004-01-26 11:52 ` Jan Damborsky
-- strict thread matches above, loose matches on Subject: below --
2004-01-19 16:20 Jan Damborsky
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