Signed-off-by: Wolfgang Denk <wd@denx.de>
[trini: Fixup common/cmd_io.c]
Signed-off-by: Tom Rini <trini@ti.com>

Some ARM compilers may emit code that makes unaligned accesses when
faced with constructs such as:

    char name[12] = "bootmenu_";

same fix as commit: 064d55f8

=========================================================
data abort

    MAYBE you should read doc/README.arm-unaligned-accesses

pc : [<3ff4b60c>]          lr : [<3ff4b7b0>]
sp : 3f346a58  ip : 3ff9c8e6     fp : 02000060
r10: 00000000  r9 : 3df47fc0     r8 : 3f347f40
r7 : 00000000  r6 : 00000000     r5 : 00000003  r4 : 3f759140
r3 : 000003f0  r2 : 00000000     r1 : 000003f1  r0 : 00000000
Flags: nzCv  IRQs on  FIQs off  Mode SVC_32
Resetting CPU ...
======================================================

Signed-off-by: Lan Yixun (dlan) <dennis.yxun@gmail.com>

The "bootmenu" command uses U-Boot menu interfaces and provides
a simple mechanism for creating menus with several boot items.
When running this command the menu will be assembled as defined
by a set of environment variables which contain a title and
command key-value pairs. The "Up" and "Down" keys are used for
navigation through the items. Current active menu item is
highlighted and can be selected using the "Enter" key.

The command interprets and generates various ANSI escape
sequencies, so for proper menu rendering and item selection
the used terminal should support them.

Signed-off-by: Pali Rohár <pali.rohar@gmail.com>
[agust: various fixes and documentation updates]
Signed-off-by: Anatolij Gustschin <agust@denx.de>