On Fri, Feb 17, 2017 at 06:31:29PM +0100, Philipp Tomsich wrote: > Motivated by the the SPL layout for SD/MMC devices on Allwinner SoCs > (the SPL code needs to reside an 8K offset into the device), we add > support for leaving a gap between the MBR (LBA#0), GPT header (LBA#1) > and GPT partition entries (linked from field in the GPT header). > > Note that this affects the creation of partition from U-Boot only and > has no effect on reading existing partition tables. > > If defined, EFI_PARTITION_ENTRIES_OFF specifies a byte-offset into > a device and the parititon entries will be located starting at the > next LBA folling this offset.
In principle, this isn't really EFI specific, because all partition table formats will need to avoid the SPL area, so the configuration string shouldn't include the word EFI. EFI just happens to be the only(?) partition table format which is bloated enough to not easily fit into the space before the SPL area. Also, it seems to me that there should also be a way of specifying how much room is available before the SPL area. So you could have CONFIG_SPL_AREA_START and CONFIG_SPL_AREA_SIZE, which added together gives the same value as your EFI_PARTITION_ENTRIES_OFF. -- Rask Ingemann Lambertsen _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
