This model assumes that boards will load boot configuration files from a
regular storage mechanism (eMMC, SD card, USB Disk, SATA disk, etc.) with
-a standard partitioning scheme (MBR, GPT). Boards that cannnot support this
+a standard partitioning scheme (MBR, GPT). Boards that cannot support this
storage model are outside the scope of this document, and may still need
board-specific installer/boot-configuration support in a distro.
flash before running the distro installer. Even on boards that do not conform
to this aspect of the model, the extent of the board-specific support in the
distro installer logic would be to install a board-specific U-Boot package to
-the boot partition partition during installation. This distro-supplied U-Boot
-can still implement the same features as on any other board, and hence the
-distro's boot configuration file generation logic can still be board-agnostic.
+the boot partition during installation. This distro-supplied U-Boot can still
+implement the same features as on any other board, and hence the distro's boot
+configuration file generation logic can still be board-agnostic.
Locating Bootable Disks
-----------------------
conceptually identical to creating a grub2 configuration file on a desktop
PC.
-Note that in the absense of any partition that is explicitly marked bootable,
+Note that in the absence of any partition that is explicitly marked bootable,
U-Boot falls back to searching the first valid partition of a disk for boot
configuration files. Other bootloaders are recommended to do the same, since
I believe that partition table bootable flags aren't so commonly used outside
The kernel should be located within the first 128M of RAM in order for the
kernel CONFIG_AUTO_ZRELADDR option to work, which is likely enabled on any
distro kernel. Since the kernel will decompress itself to 0x8000 after the
- start of RAM, kernel_addr_rshould not overlap that area, or the kernel will
+ start of RAM, kernel_addr_r should not overlap that area, or the kernel will
have to copy itself somewhere else first before decompression.
A size of 16MB for the kernel is likely adequate.