bootm: Move bootm options to common/Kconfig ...

bootm has a C API, so the bootm options have to depend on the
option providing the bootm code (CONFIG_BOOTM), not on the
option providing the command (CONFIG_CMD_BOOTM). Fixing the
dependencies makes it possible to fully use bootm from C without
enabling the bootm command support.
This also removes the CMD_ prefix from the options which means
we have to update the defconfigs aswell.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

crypto: prepare to allow multiple digest driver ...

This will allow to have hw driver or asm optimised driver.

Use a priority level to determine which one to use at runtime.
The generic one will be 0.

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

command: passwd: depend on CMD_LOGIN rather than selecting it ...

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

commands: NET_DHCP -> CMD_DHCP ...

* this compile option actually turns on a command, so name it
  accordingly
* also move the Kconfig definition into commands/Kconfig, thus
  placing getopt into the "Network commands" section
* while at it, improve Kconfig documention

Signed-off-by: Holger Schurig <holgerschurig@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

commands: NET_PING -> CMD_PING ...

* this compile option actually turns on a command, so name it
  accordingly
* also move the Kconfig definition into commands/Kconfig, thus
  placing getopt into the "Network commands" section
* while at it, improve Kconfig documention

Signed-off-by: Holger Schurig <holgerschurig@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

highbank: add power off support ...

Cc: Rob Herring <rob.herring@calxeda.com>
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

highbank: use the provided dtb by the firmware to probe barebox device and mem size ...

the dtb is at 0x1000

if no dtb present use C code device

keep in C the timer/gpio/uart

have a nice tree

barebox 2013.02.0-00294-g6802ddf #124 Wed Feb 13 02:31:01 CST 2013

Board: Calxeda Highbank
memory: ram0: 0xff900000@0x0
highbank: dtb probed memory size
registered netconsole as cs1
malloc space: 0x03500000 -> 0x03efffff (size 10 MiB)
Open /dev/env0 No such file or directory
no valid environment found on /dev/env0. Using default environment
running /env/bin/init...
ahci ffe08000.sata: port 0: SATA link ok
ahci ffe08000.sata: port 0: Spinning up device...
ahci ffe08000.sata: port 0: ok.
ahci ffe08000.sata: registered /dev/ata0
eth0: got preset MAC address: 52:54:00:12:34:56
eth1: got preset MAC address: 52:54:00:12:34:57

Hit any key to stop autoboot:  3
[barebox@Calxeda Highbank]:/
 # devinfo
devices:
`---- platform
     `---- mem0
          `---- 0x00000000-0x3fffffff: /dev/ram0
          `---- 0x00001000-0x00010fff: /dev/dtb
     `---- mem1
          `---- 0x00000000-0x000051af: /dev/defaultenv
     `---- mem2
          `---- 0x00000000-0xfffffffe: /dev/mem
     `---- cs1
     `---- fff10600.timer
     `---- fff10620.watchdog
     `---- fff11000.interrupt-controller
     `---- l2-cache
     `---- ffe08000.sata
          `---- 0x00000000-0x3fffffff: /dev/ata0
          `---- 0x00100000-0x014fffff: /dev/ata0.0
          `---- 0x01500000-0x3fffffff: /dev/ata0.1
     `---- ffe0e000.sdhci
     `---- fff00000.memory-controller
     `---- mem3
     `---- fff3c000.sregs
     `---- fff3c200.sregs
     `---- fff50000.ethernet
          `---- eth0
     `---- fff51000.ethernet
          `---- eth1
`---- amba
     `---- sp804
     `---- uart-pl011
          `---- cs0
     `---- fff30000.gpio
     `---- fff31000.gpio
     `---- fff32000.gpio
     `---- fff33000.gpio
     `---- fff35000.rtc
`---- fs
     `---- ramfs0
     `---- devfs0
`---- net
`---- global

drivers:
uart-pl011
sp804
pl061_gpio
ramfs
devfs
tftp
hb-xgmac
ahci
mem
[barebox@Calxeda Highbank]:/
 #

Cc: Rob Herring <rob.herring@calxeda.com>
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

arm: add highbank support ...

currently only tested under qemu

qemu-system-arm -M highbank -nographic -m 4089 -kernel build/highbank/arch/arm/pbl/zbarebox -tftp "." -drive id=disk,if=ide,file=disk.img -device ide-drive,drive=disk,bus=ide.0

with:
 - timer (AMBA SP804)
 - uart (AMBA PL011)
 - gpio (AMBA PL061)
 - ahci
 - net (XGMAC)

Cc: Rob Herring <rob.herring@calxeda.com>
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>