From: "Peter Kuennemann@Crane-Soft" <pkue@crane-soft.de>
To: Sascha Hauer <s.hauer@pengutronix.de>
Cc: barebox@lists.infradead.org
Subject: Re: Booting PhyTec PCM043/IMX35 from USB/SD-Card
Date: Thu, 28 Jun 2012 15:36:22 +0200 [thread overview]
Message-ID: <4FEC5DD6.4040308@crane-soft.de> (raw)
In-Reply-To: <20120628104341.GW1623@pengutronix.de>
Am 28.06.2012 12:43, schrieb Sascha Hauer:
>> ...
>> However, I still cannot access the mmc from barebox. It would be enough to be able to
>> read the mmc. I want to be able to store kernel or rootfs image updates on the mmc
>> and flash them to either NAND or NOR after reboot to enable remote update services.
>>
>> Question: "How can I access the MMC from barebox (read only may be sufficient)
>
> The pcm043 currently does not have mmc support. You have to add this to
> the board file:
>
> imx35_add_mmc0(NULL);
>
> or
>
> imx35_add_mmc1(NULL);
>
> depending on which port is routed to the slot. Also you have to setup
> the iomuxer (you can probably copy the pin settings from the kernel). Of
> course you also have to enable MMC support in the config.
>
> Sascha
>
>
I have tried to update the board code accordingly but stumbled upon another
problem. The size of barebox increased to 0x40bb7 so I changed the
partition definitions in pcm043.c as follows:
#define CONFIG_MX35_BBSIZE 0x42000
...
devfs_add_partition("nor0", 0x00000, CONFIG_MX35_BBSIZE, PARTITION_FIXED, "self0"); /* ourself */
devfs_add_partition("nor0", CONFIG_MX35_BBSIZE, 0x20000, PARTITION_FIXED, "env0");
...
Barebox boots OK but after having saved the environment (saveenv) it dow not boot anymore.
Barebox boot messages ...
Malloc space: 0x86e00000 -> 0x87dfffff (size 16 MB)
Stack space : 0x86df8000 -> 0x86e00000 (size 32 kB)
envfs: wrong magic on /dev/env0
no valid environment found on /dev/env0. Using default environment <== expected
running /env/bin/init...
devinfo <== What is defined ?
...
`---- cfi_flash0
`---- 0x00000000-0x01ffffff: /dev/nor0
`---- 0x00000000-0x00041fff: /dev/self0
`---- 0x00042000-0x0005ffff: /dev/env0
saveenv <== save the environment
reset <== nothing after here
What is wrong here?
Peter
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next prev parent reply other threads:[~2012-06-28 13:36 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-05-23 15:43 Peter Kuennemann@Crane-Soft
2012-05-24 19:55 ` Sascha Hauer
2012-05-25 9:35 ` Peter Kuennemann@Crane-Soft
2012-05-31 18:27 ` Sascha Hauer
2012-05-31 19:13 ` CRANESOFT
2012-06-28 6:53 ` Peter Kuennemann@Crane-Soft
2012-06-28 10:43 ` Sascha Hauer
2012-06-28 13:36 ` Peter Kuennemann@Crane-Soft [this message]
2012-06-28 13:54 ` Sascha Hauer
2012-08-23 17:59 ` Peter
2012-08-24 8:46 ` Jan Lübbe
2012-08-27 7:45 ` Peter
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