* [U-Boot] Mathematics operation on uboot variables
@ 2010-11-23 12:53 Eran Y
2010-11-25 12:19 ` Detlev Zundel
0 siblings, 1 reply; 2+ messages in thread
From: Eran Y @ 2010-11-23 12:53 UTC (permalink / raw)
To: u-boot
Hi
Is there any way to use mathematics operation on uboot environment or uboot
local variables?
since $varA+$varB and $(varA+varB) just save the string.
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* [U-Boot] Mathematics operation on uboot variables
2010-11-23 12:53 [U-Boot] Mathematics operation on uboot variables Eran Y
@ 2010-11-25 12:19 ` Detlev Zundel
0 siblings, 0 replies; 2+ messages in thread
From: Detlev Zundel @ 2010-11-25 12:19 UTC (permalink / raw)
To: u-boot
Hi Eran,
> Is there any way to use mathematics operation on uboot environment or uboot
> local variables?
> since $varA+$varB and $(varA+varB) just save the string.
You need to include CONFIG_CMD_SETEXPR in your configuration for such a
functionality. See common/cmd_setexpr.c.
Cheers
Detlev
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