Loading Math register (CAAM)

apoorvabhatia — Mon, 29 Dec 2014 12:46:36 GMT

I am trying to load the math register 0 with a value of 1 million.

I am using the following descriptors for the same.

/* Load 1 Million to Math Register0

* 0001.0110.1000.1000.0001.1100.0000.0100

* Data: 0x000F 4240

* Loading the Math Register0 with immediate value of 1 million

#define RNG_DESC4 0x16881B04

#define RNG_DESC5 0x000F4240

Can anybody please tell what is wrong with it? I am getting the same error again and again of invalid load command.

Thanks.

Re: Loading Math register (CAAM)

Yuri — Wed, 14 Jan 2015 10:26:48 GMT

According to the following tables in the Security RM -

Table 5-22 (LOAD command format) ;
Table 5-24 (LOAD command DST, LENGTH, and OFFSET field values)

IMM field should be zero (is 1 in Your case), which means “Data to be loaded is found at the
location pointed to by the next word”.

Have a great day,
Yuri

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Loading Math register (CAAM)

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