From: Peter Hurley <peter@hurleysoftware.com>
To: Ulf Hansson <ulf.hansson@linaro.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>,
linux-mmc <linux-mmc@vger.kernel.org>,
Adrian Hunter <adrian.hunter@intel.com>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
Jaehoon Chung <jh80.chung@samsung.com>
Subject: Re: [bisect] Merge tag 'mmc-v4.6' of git://git.linaro.org/people/ulf.hansson/mmc (was [GIT PULL] MMC for v.4.6)
Date: Tue, 5 Apr 2016 17:24:57 -0700 [thread overview]
Message-ID: <57045759.70308@hurleysoftware.com> (raw)
In-Reply-To: <CAPDyKFqFoJybrr4dBt8xO7iHt9CAbET=i-v9ZLht7J6K091Phw@mail.gmail.com>
On 04/05/2016 01:59 AM, Ulf Hansson wrote:
> Although, what puzzles me around this particular issue, is how an SoC
> configuration can rely on this fragile behaviour.
> All you have to do to break the assumption of fixed mmcblk ids, is to
> boot with an SD card inserted and then without. Perhaps these SoCs
> just doesn't support this use case!?
Both configurations boot reliably; without the uSD inserted, the
boot and root partitions on the eMMC are booted instead.
Without a uSD inserted, the only mmc block device is the eMMC which is
/dev/mmcblk0, and the root partition is still /dev/mmcblk0p2.
Note though that this particular bootscript can load add'l bootscripts
from the boot partition; in this particular case, the eMMC root
partition is set as a fixed UUID in the bootscript from the
boot partition.
Regards,
Peter Hurley
next prev parent reply other threads:[~2016-04-06 0:24 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-03-21 12:59 [GIT PULL] MMC for v.4.6 Ulf Hansson
2016-04-03 2:56 ` [bisect] Merge tag 'mmc-v4.6' of git://git.linaro.org/people/ulf.hansson/mmc (was [GIT PULL] MMC for v.4.6) Peter Hurley
2016-04-03 11:54 ` Linus Torvalds
2016-04-04 11:29 ` Ulf Hansson
2016-04-04 16:56 ` Peter Hurley
2016-04-04 18:59 ` Linus Torvalds
2016-04-04 19:29 ` Peter Hurley
2016-04-04 19:49 ` Linus Torvalds
2016-04-04 20:00 ` Peter Hurley
2016-04-05 8:59 ` Ulf Hansson
2016-04-06 0:24 ` Peter Hurley [this message]
2016-04-06 7:47 ` Jisheng Zhang
2016-04-06 8:26 ` Ulf Hansson
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