请求支援：关于saveenv的问题

bbjyczy 2010-09-27 02:48:31

我在调一块板子的boot。先用saveenv保存参数。提示如下

Saving Environment to Flash...

Protect off 01020000 ... 0102FFFF

Un-Protected 1 sectors

Erasing Flash...        [XXXXX]

Error: Erase Failure!

Erased 1 sectors

Writing to Flash...     ********#

Error: Program Failure!

done

Protected 1 sectors

保存参数失败了。貌似是flash坏了。

紧接着，我使用printenv来打印

bootdelay=3

baudrate=115200

ethaddr=08:00:3e:26:0a:5b

netmask=255.255.255.0

gatewayip=10.10.52.1

serverip=192.168.2.121

ipaddr=192.168.2.120

getwayip=192.168.2.1



Environment size: 162/65532 bytes

我认为printenv打印出来的这些参数存放的flash地址和saveenv要操作的flash地址一致。那么flash就又没有坏。

那为什么saveenv不能保存参数呢。？

注解：我使用hharm2410-R6的板子。我用JTAG重新烧录了PPCBOOT。PPCBOOT.BIN是华恒光碟里的文件。

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bbjyczy 2010-09-28

真乃高人也。兄弟我数次得你帮助。确实是PPCBOOT.BIN的文件的问题。我换了一个版本就可以了。

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deep_pro 2010-09-27

uboot 是从ppcboot发展来的，不过没用过ppcboot，猜测行为是类似的
你的报错说擦除flash错误，flash坏掉的概率小于你软件错误的概率
仔细检查少些的镜像是否是以前成功的那个

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bbjyczy 2010-09-27

回复4楼，
1。通过三楼这么一说，我怀疑是FLASH坏了。
2。我的是PPCBOOT。不是UBOOT。当然可能差不多。帖代码啊？会不会很长啊。
3。我上个星期在同一块板子上做SAVEENV是通过的。后来想练一下手，就用TJAG重新烧写了PPCBOOT。结果就SAVEENV就不通过了。郁闷的很。

int saveenv(void)

{

	int rc = 1;



	printf ("Protect off %08lX ... %08lX\n",

		(ulong)flash_addr, end_addr);



	if (flash_sect_protect (0, (ulong)flash_addr, end_addr)) {

		goto Done;

	}



	debug ("Protect off %08lX ... %08lX\n",

		(ulong)flash_addr_new, end_addr_new);



	if (flash_sect_protect (0, (ulong)flash_addr_new, end_addr_new)) {

		goto Done;

	}



	puts ("Erasing Flash...");

	debug (" %08lX ... %08lX ...",

		(ulong)flash_addr_new, end_addr_new);



	if (flash_sect_erase ((ulong)flash_addr_new, end_addr_new)) {

		goto Done;

	}



	puts ("Writing to Flash... ");

	debug (" %08lX ... %08lX ...",

		(ulong)&(flash_addr_new->data),

		sizeof(env_ptr->data)+(ulong)&(flash_addr_new->data));

	if (flash_write(env_ptr->data,

	                (ulong)&(flash_addr_new->data),

			sizeof(env_ptr->data)) ||



	    flash_write((char *)&(env_ptr->crc),

	                (ulong)&(flash_addr_new->crc),

			sizeof(env_ptr->crc)) ||



	    flash_write((char *)&obsolete_flag,

	                (ulong)&(flash_addr->flags),

			sizeof(flash_addr->flags)) ||



	    flash_write((char *)&active_flag,

	                (ulong)&(flash_addr_new->flags),

			sizeof(flash_addr_new->flags)))

	{

		flash_perror (rc);

		goto Done;

	}

	puts ("done\n");

	

	{

		env_t * etmp = flash_addr;

		ulong ltmp = end_addr;



		flash_addr = flash_addr_new;

		flash_addr_new = etmp;



		end_addr = end_addr_new;

		end_addr_new = ltmp;

	}



	rc = 0;

Done:



	/* try to re-protect */

	(void) flash_sect_protect (1, (ulong)flash_addr, end_addr);

	(void) flash_sect_protect (1, (ulong)flash_addr_new, end_addr_new);



	return rc;

}