From mboxrd@z Thu Jan 1 00:00:00 1970 From: Marek Vasut Date: Fri, 25 Nov 2011 15:30:59 +0100 Subject: [U-Boot] mx28: Saving env vars on MMC In-Reply-To: References: <201111250913.27515.marek.vasut@gmail.com> Message-ID: <201111251531.00198.marek.vasut@gmail.com> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de > On Fri, Nov 25, 2011 at 6:13 AM, Marek Vasut wrote: > > You have to be careful on the imx28 about the following: > > > > 1) sector 0 / first 512 bytes : That's where MBR is > > 2) sector 2048 + ... : That's where U-Boot is located > > > > But it's strange, there's about 1MB of space between MBR and U-Boot ... > > can you actually check the first 2MB of the card and run binary diff on > > the good and bad card ? That way you'll see what changed. > > What I see is that when I do a 'save' the env variables are written to > 0 and this causes the boot to fail. > > Has the mxsmmc driver been tested? > > Regards, > > Fabio Estevam I did the following change and tested u-boot on m28evk. I saved env, restarted board etc. 1) Env was successfully saved to MMC sector 2 (at offset 1024 bytes from start). 2) Env was successfully loaded from MMC after reset Basically ... give it a go, Fabio, maybe you just missed something :) PATCH: diff --git a/include/configs/m28evk.h b/include/configs/m28evk.h index d4bd207..25edab8 100644 --- a/include/configs/m28evk.h +++ b/include/configs/m28evk.h @@ -147,7 +147,7 @@ #define NAND_MAX_CHIPS 8 /* Environment is in NAND */ -#define CONFIG_ENV_IS_IN_NAND +/*#define CONFIG_ENV_IS_IN_NAND #define CONFIG_ENV_SIZE (16 * 1024) #define CONFIG_ENV_SIZE_REDUND CONFIG_ENV_SIZE #define CONFIG_ENV_SECT_SIZE (128 * 1024) @@ -155,6 +155,12 @@ #define CONFIG_ENV_OFFSET 0x300000 #define CONFIG_ENV_OFFSET_REDUND \ (CONFIG_ENV_OFFSET + CONFIG_ENV_RANGE) +*/ + +#define CONFIG_ENV_IS_IN_MMC +#define CONFIG_SYS_MMC_ENV_DEV 0 +#define CONFIG_ENV_SIZE (16 * 1024) +#define CONFIG_ENV_OFFSET 1024 #define CONFIG_CMD_UBI #define CONFIG_CMD_UBIFS