From mboxrd@z Thu Jan  1 00:00:00 1970
From: Heiko Schocher <hs@denx.de>
Date: Tue, 16 Jul 2013 10:01:02 +0200
Subject: [U-Boot] [PATCH v2] dfu, nand,
 ubi: add partubi alt settings for updating ubi partition
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Hello Lukasz,

Am 16.07.2013 09:41, schrieb Lukasz Majewski:
> Hi Heiko,
>
>> updating an ubi partition needs a completely erased mtd partition,
>> see:
>> http://lists.infradead.org/pipermail/linux-mtd/2011-May/035416.html
>>
>> So, add partubi alt setting for the dfu_alt_info environment
>> variable to mark this partition as an ubi partition. In case we
>> update an ubi partition, we erase after flashing the image into the
>> partition, the remaining sektors.
>>
>> Signed-off-by: Heiko Schocher<hs@denx.de>
>> Cc: Pantelis Antoniou<panto@antoniou-consulting.com>
>> Cc: Tom Rini<trini@ti.com>
>> Cc: Lukasz Majewski<l.majewski@samsung.com>
>> Cc: Kyungmin Park<kyungmin.park@samsung.com>
>> Cc: Marek Vasut<marex@denx.de>
>> Cc: Wolfgang Denk<wd@denx.de>
>>
>> ---
>>
>> - This patch is also a good starting point to fix up updating ubi, as
>>    we currently use "nand erase" for erasing the sektors. This is
>>    not the prefered way for writing an ubi image, see:
>>    http://www.linux-mtd.infradead.org/faq/ubi.html#L_flash_img
>>
>>    This must be fixed ... we have no "ubiformat" in u-boot, or?
>>
>> - changes for v2:
>>    - do not use spread = 1 for nand_erase_opts, to prevent
>>      errormessage if there are bad blocks in the erase range.
>> ---
>>   drivers/dfu/dfu.c      | 30 +++++++++++++++++++++++++++++-
>>   drivers/dfu/dfu_nand.c | 26 ++++++++++++++++++++++++++
>>   include/dfu.h          |  2 ++
>>   3 Dateien ge?ndert, 57 Zeilen hinzugef?gt(+), 1 Zeile entfernt(-)
>>
>> diff --git a/drivers/dfu/dfu.c b/drivers/dfu/dfu.c
>> index 0521752..7ba7026 100644
>> --- a/drivers/dfu/dfu.c
>> +++ b/drivers/dfu/dfu.c
>> @@ -23,6 +23,7 @@
>>   #include<errno.h>
>>   #include<malloc.h>
>>   #include<mmc.h>
>> +#include<nand.h>
>>   #include<fat.h>
>>   #include<dfu.h>
>>   #include<linux/list.h>
>> @@ -176,6 +177,34 @@ int dfu_write(struct dfu_entity *dfu, void *buf,
>> int size, int blk_seq_num) ret = dfu->flush_medium(dfu);
>>   		printf("\nDFU complete CRC32: 0x%08x\n", dfu->crc);
>>
>> +		/* in case of ubi partition, erase rest of the
>> partition */
>> +		if (dfu->ubi == 1) {
>> +			int ret;
>> +			nand_info_t *nand;
>> +			/* erase complete partition */
>> +			nand_erase_options_t opts;
>> +
>> +			if (nand_curr_device<  0 ||
>> +			    nand_curr_device>=
>> CONFIG_SYS_MAX_NAND_DEVICE ||
>    ^^^^^^^^^^^^^^^^^^^^^^^^^^^ - this config won't be defined at
>    devices, which don't have NAND memory (like Trats).
>    Due to that Trats board is not building.
>
>    Please remove memory type dependent code from the common dfu code.

Oh... Hmm... maybe I move this code to drivers/dfu/dfu_nand.c
and make there a dfu_nand_flush() ?

bye,
Heiko
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