[U-Boot] [PATCH] SPL: add support to boot from a partition type

[Tom Rini]

On Sun, Jan 29, 2017 at 01:59:17AM +0000, Westergreen, Dalon wrote:
> On Sat, 2017-01-28 at 19:06 -0500, Tom Rini wrote:
> > On Sat, Jan 28, 2017 at 03:20:09PM -0800, Dalon Westergreen wrote:
> > 
> > > 
> > > From: Dalon Westergreen <dalon.westergreen at intel.com>
> > > 
> > > the socfpga bootrom supports mmc booting from either a raw image
> > > starting at 0x0, or from a partition of type 0xa2.  This patch
> > > adds support for locating the boot image in the first type 0xa2
> > > partition found.
> > > 
> > > Signed-off-by: Dalon Westergreen <dalon.westergreen at intel.com>
> > > ---
> > >  common/spl/Kconfig   | 17 +++++++++++++++++
> > >  common/spl/spl_mmc.c | 45 ++++++++++++++++++++++++++++++++++++++++++++-
> > >  disk/part_dos.c      |  1 +
> > >  include/part.h       |  1 +
> > >  4 files changed, 63 insertions(+), 1 deletion(-)
> > 
> > Today socfpga sets SYS_MMCSD_RAW_MODE_U_BOOT_PARTITION to 1.  Do you
> > really have enough cases where the special partition isn't going to be
> > likely known when building U-Boot for a given platform?
> All of our kits actually ship with the third partition being the 0xa2
> partition.  Normally the 1 partition is the fat partition.  I want to
> support the case where the 0xa2 partition is arbitrary and used only for
> the SPL.  the 1 partition is a fat partition with the full u-boot image.

Er, this code is where we determine where to load U-Boot from, SPL is
running.  So if I follow you, the bootrom would load SPL from the
partition with 0xa2 as the type, usually #3 and then we load U-Boot from
the FAT partition (which would be SPL_FS_LOAD_PAYLOAD_NAME and such) ?

-- 
Tom
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