Sorry for the top post. Resending in plain text as original message was UTF-8
On Wed, Apr 7, 2010 at 11:14 AM, Brian Hutchinson <b.hutch...@gmail.com> wrote:
> Hi,
>
> I'm using u-boot 1.1.6 and have been using a single 256k flash sector
> for the environment. I want to use the redundant env. feature so I
> changed my config to:
>
> #define CFG_ENV_IS_IN_FLASH 1 /* Environment
> variables stored in Flash memory */
> #define CFG_ENV_ADDR (PC20X_BOOTABLE_FLASH_BASE+FLASH_SECTOR_SIZE)
> #define CFG_ENV_SECT_SIZE FLASH_SECTOR_SIZE /* One flash
> sector for environment info */
> #define CFG_ENV_SIZE 0x10000 /* But 64K is sufficient
> */
> //#define CFG_ENV_SIZE CFG_ENV_SECT_SIZE /* the whole sector */
>
> /* Redundant environment */
> #define CFG_ENV_ADDR_REDUND (CFG_ENV_ADDR + CFG_ENV_SECT_SIZE)
> #define CFG_ENV_SIZE_REDUND (CFG_ENV_SIZE)
>
>
> #define CONFIG_ENV_OVERWRITE /* Turn off wite
> protection for vendor parameters */
>
> When I use u-boot built with a CFG_ENV_SIZE of 0x10000 (what was
> working before I started) and enable CFG_ENV_ADDR_REDUND .... I get
> the following when trying to saveenv:
>
> => saveenv
> Saving Environment to Flash...
> Un-Protected 1 sectors
> Un-Protected 1 sectors
> Unable to save the rest of sector (196608)
> Protected 1 sectors
> Protected 1 sectors
>
> My physical NOR flash is setup as:
> 0x20000000 = u-boot
> 0x20040000 = u-boot env. (the original env that works if I don't have
> redund turned on)
> 0x20080000 = u-boot redund env. (what I added)
>
> I'm not certain what the problem is. I'm getting to the code in
> common/env_flash.c that has:
>
> #if CFG_ENV_SECT_SIZE > CFG_ENV_SIZE
> up_data = (end_addr_new + 1 - ((long)flash_addr_new + CFG_ENV_SIZE));
> debug ("Data to save 0x%x\n", up_data);
> if (up_data) {
> if ((saved_data = malloc(up_data)) == NULL) {
> printf("Unable to save the rest of sector (%ld)\n",
> up_data);
> goto Done;
> }
> memcpy(saved_data,
> (void *)((long)flash_addr_new + CFG_ENV_SIZE),
> up_data);
> debug ("Data (start 0x%x, len 0x%x) saved at 0x%x\n",
> (long)flash_addr_new + CFG_ENV_SIZE,
> up_data, saved_data);
> }
> #endif
>
> ... which to my understanding is intended to allow you to save RAM by
> using a env. smaller than your sector size which is my case.
>
> I've also tried to set CFG_ENV_SIZE to be the flash sector size which
> gets me over the above "Unable to save the rest of sector" problem but
> I suspect that I'm having RAM issues as I only have 128M RAM and am
> trying to use two environments of 256k each and the problem I'm having
> then becomes when I try to nfs boot my board .... it just hangs.
>
> Any ideas on what I should check? The "Unable to save the rest of
> sector (196608)" is kind of strange as 196608 in hex is 0x30000 which
> is the sector u-boot lives in!
>
> Regards,
>
> Brian
>
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