From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tom Rini Date: Thu, 5 Dec 2013 14:09:07 -0500 Subject: [U-Boot] eMMC boot partition support in uboot In-Reply-To: <52A0CA10.1040007@ruggedcom.com> References: <52A0CA10.1040007@ruggedcom.com> Message-ID: <20131205190907.GP420@bill-the-cat> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de On Thu, Dec 05, 2013 at 01:46:40PM -0500, Richard Retanubun wrote: > Hi guys, > > Recap: I am trying to boot MLO + uboot from eMMC boot partition on DRA7xx_EVM eval platform. > SW-Baseline: uboot p-ti-uboot-2013.04 & p-ti-linux-3.8.y from omapzoom. Please note that this list is for the mainline U-Boot tree, and to contact your TI reps for help with the TI trees. I'm answering in general since I know how the mainline code works, and what I suspect needs doing there in general to allow what you want to work: [snip] > 3. I realize that the MLO contents (using uboot/tools/omapimage?) needed to say > MMCSD_MODE_RAW for my platform. I am bypassing this problem by by hard coding the response > arch/arm/cpu/armv7/omap-common/boot-common.c::spl_boot_mode() to always says MMCSD_MODE_RAW. > This seems to work and I am past the hang() code. It's possible that the ROM simply doesn't support a dos-style partition table and a FAT partition on the eMMC boot partition so the right answer here is to do what you're doing and hard-code raw only. I strongly suspect this to be true, even. > 4. Now, MLO is ready to (raw) load uboot binary from the eMMC boot partition (i.e. /dev/mmcblk1boot0). > Unfortunately, at this point I don't know how to make the platform recognize the eMMC boot partitions. > I think they are not modelled yet in uboot. Only the User-Data-Area (UDA) > is recognized in uboot (called mmc 1) Not quite true, no. You'll need code similar to what we have in common/env_mmc.c to switch the partition to the boot partition. -- Tom -------------- next part -------------- A non-text attachment was scrubbed... Name: not available Type: application/pgp-signature Size: 836 bytes Desc: Digital signature URL: