変数の保存

Marvell>> printenv
baudrate=115200
	:
	:
usb0Mode=host
usb1Mode=host

Environment size: 1046/4092 bytes
Marvell>> 

変数の設定

Marvell>> setenv test true
Marvell>> printenv
baudrate=115200
	:
usb0Mode=host
usb1Mode=host
test=true

Environment size: 1056/4092 bytes
Marvell>>

保存せず reboot

Marvell>> reset
Marvell>> Orion1   CPU =  Low

=== KURO U-Boot. ===
 ** LOADER **
 ** KUROBOX BOARD: KURO_BOX  LE (CFG_ENV_ADDR=fffff000)


U-Boot 1.1.1 (Feb 13 2007 - 15:59:43) Marvell version: 1.12.1 - TINY

DRAM CS[0] base 0x00000000   size 128MB
DRAM Total size 128MB
[256kB@fffc0000] Flash: 256 kB
Addresses 20M - 0M are saved for the U-Boot usage.
Mem malloc Initialization (20M - 16M): Done
NAND: 256 MB

Soc: 88F5182 A2
CPU: ARM926 (Rev 0) running @ 500Mhz
Orion 1 streaming disabled
SysClock = 250Mhz , TClock = 166Mhz


USB 0: host mode
USB 1: host mode
PCI 0: PCI Express Root Complex Interface
PCI 1: Conventional PCI, speed = 33000000
Net:   egiga0 [PRIME]
Using 88E1118 phy
hit any key to switch tftp boot.
Hit any key to stop autoboot:  0
<<system_bootend>>
Hit any key to stop autoboot:  0
Marvell>> printenv
baudrate=115200
	:
	:
usb0Mode=host
usb1Mode=host

Environment size: 1046/4092 bytes
Marvell>>

変数の再セット

Marvell>> setenv test false
Marvell>> printenv
baudrate=115200
	:
usb0Mode=host
usb1Mode=host
test=false

Environment size: 1057/4092 bytes
Marvell>>

変数の保存

Marvell>> saveenv
Saving Environment to Flash...
.
Un-Protected 1 sectors
Erasing Flash...
.
Erased 1 sectors
Writing to Flash... done
.
Protected 1 sectors
Marvell>>

reboot

Marvell>> reset
Marvell>> Orion1   CPU =  Low

=== KURO U-Boot. ===
 ** LOADER **
 ** KUROBOX BOARD: KURO_BOX  LE (CFG_ENV_ADDR=fffff000)


U-Boot 1.1.1 (Feb 13 2007 - 15:59:43) Marvell version: 1.12.1 - TINY

DRAM CS[0] base 0x00000000   size 128MB
DRAM Total size 128MB
[256kB@fffc0000] Flash: 256 kB
Addresses 20M - 0M are saved for the U-Boot usage.
Mem malloc Initialization (20M - 16M): Done
NAND: 256 MB

Soc: 88F5182 A2
CPU: ARM926 (Rev 0) running @ 500Mhz
Orion 1 streaming disabled
SysClock = 250Mhz , TClock = 166Mhz


USB 0: host mode
USB 1: host mode
PCI 0: PCI Express Root Complex Interface
PCI 1: Conventional PCI, speed = 33000000
Net:   egiga0 [PRIME]
Using 88E1118 phy
hit any key to switch tftp boot.
Hit any key to stop autoboot:  0
<<system_bootend>>
Hit any key to stop autoboot:  0
Marvell>> printenv
baudrate=115200
	:
	:
nand_boot=no
test=false
stdin=serial
	:
	:

Environment size: 1057/4092 bytes
Marvell>>

というわけで、setenv だけでは変数は保存されない。そのときだけの設定。
saveenv を実行することによって保存され、電源OFF やリセット後も有効になる。

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