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Re: [bisect] Merge tag 'mmc-v4.6' of git://git.linaro.org/people/ulf.hansson/mmc (was [GIT PULL] MMC for v.4.6)

From	Peter Hurley <peter@hurleysoftware.com>
Newsgroups	linux.kernel
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	2016-04-06 02:30 +0200
Message-ID	<rkJw5-3LU-5@gated-at.bofh.it> (permalink)
References	(1 earlier) <rjGqB-531-1@gated-at.bofh.it> <rjORc-2Nz-9@gated-at.bofh.it> <rkaRI-2fN-11@gated-at.bofh.it> <rkhTb-7zr-1@gated-at.bofh.it> <rkv9L-N0-3@gated-at.bofh.it>
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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

Thread

[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 <peter@hurleysoftware.com> - 2016-04-03 05:00 +0200
  Re: [bisect] Merge tag 'mmc-v4.6' of git://git.linaro.org/people/ulf.hansson/mmc  (was [GIT PULL] MMC for v.4.6) Linus Torvalds <torvalds@linux-foundation.org> - 2016-04-03 14:00 +0200
    Re: [bisect] Merge tag 'mmc-v4.6' of git://git.linaro.org/people/ulf.hansson/mmc  (was [GIT PULL] MMC for v.4.6) Ulf Hansson <ulf.hansson@linaro.org> - 2016-04-04 13:30 +0200
      Re: [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 <peter@hurleysoftware.com> - 2016-04-04 19:00 +0200
      Re: [bisect] Merge tag 'mmc-v4.6' of git://git.linaro.org/people/ulf.hansson/mmc  (was [GIT PULL] MMC for v.4.6) Linus Torvalds <torvalds@linux-foundation.org> - 2016-04-04 21:00 +0200
        Re: [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 <peter@hurleysoftware.com> - 2016-04-04 21:30 +0200
          Re: [bisect] Merge tag 'mmc-v4.6' of git://git.linaro.org/people/ulf.hansson/mmc  (was [GIT PULL] MMC for v.4.6) Linus Torvalds <torvalds@linux-foundation.org> - 2016-04-04 21:50 +0200
            Re: [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 <peter@hurleysoftware.com> - 2016-04-04 22:10 +0200
        Re: [bisect] Merge tag 'mmc-v4.6' of git://git.linaro.org/people/ulf.hansson/mmc  (was [GIT PULL] MMC for v.4.6) Ulf Hansson <ulf.hansson@linaro.org> - 2016-04-05 11:10 +0200
          Re: [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 <peter@hurleysoftware.com> - 2016-04-06 02:30 +0200
          Re: [bisect] Merge tag 'mmc-v4.6' of  git://git.linaro.org/people/ulf.hansson/mmc (was [GIT PULL] MMC for v.4.6) Jisheng Zhang <jszhang@marvell.com> - 2016-04-06 10:00 +0200
            Re: [bisect] Merge tag 'mmc-v4.6' of git://git.linaro.org/people/ulf.hansson/mmc  (was [GIT PULL] MMC for v.4.6) Ulf Hansson <ulf.hansson@linaro.org> - 2016-04-06 10:30 +0200

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