SAMA5D2 Series

57.6.11 ICM User Initial Hash Value Register

Name:	ICM_UIHVALx
Offset:	0x38 + x*0x04 [x=0..7]
Reset:	–
Property:	Write-only


Bit	31	30	29	28	27	26	25	24
	VAL[31:24]
Access	W	W	W	W	W	W	W	W
Reset	–	–	–	–	–	–	–	–


Bit	23	22	21	20	19	18	17	16
	VAL[23:16]
Access	W	W	W	W	W	W	W	W
Reset	–	–	–	–	–	–	–	–


Bit	15	14	13	12	11	10	9	8
	VAL[15:8]
Access	W	W	W	W	W	W	W	W
Reset	–	–	–	–	–	–	–	–


Bit	7	6	5	4	3	2	1	0
	VAL[7:0]
Access	W	W	W	W	W	W	W	W
Reset	–	–	–	–	–	–	–	–

Bits 31:0 – VAL[31:0] Initial Hash Value

When ICM_CFG.UIHASH is set, the Initial Hash Value is user-programmable.

To meet the desired standard, use the following example values.

For ICM_UIHVAL0 field:


Example	Comment
0x67452301	SHA1 algorithm
0xC1059ED8	SHA224 algorithm
0x6A09E667	SHA256 algorithm

For ICM_UIHVAL1 field:


Example	Comment
0xEFCDAB89	SHA1 algorithm
0x367CD507	SHA224 algorithm
0xBB67AE85	SHA256 algorithm

For ICM_UIHVAL2 field:


Example	Comment
0x98BADCFE	SHA1 algorithm
0x3070DD17	SHA224 algorithm
0x3C6EF372	SHA256 algorithm

For ICM_UIHVAL3 field:


Example	Comment
0x10325476	SHA1 algorithm
0xF70E5939	SHA224 algorithm
0xA54FF53A	SHA256 algorithm

For ICM_UIHVAL4 field:


Example	Comment
0xC3D2E1F0	SHA1 algorithm
0xFFC00B31	SHA224 algorithm
0x510E527F	SHA256 algorithm

For ICM_UIHVAL5 field:


Example	Comment
0x68581511	SHA224 algorithm
0x9B05688C	SHA256 algorithm

For ICM_UIHVAL6 field:


Example	Comment
0x64F98FA7	SHA224 algorithm
0x1F83D9AB	SHA256 algorithm

For ICM_UIHVAL7 field:


Example	Comment
0xBEFA4FA4	SHA224 algorithm
0x5BE0CD19	SHA256 algorithm

Example of Initial Value for SHA-1 Algorithm


Register Address	Address Offset / Byte Lane
Register Address	0x3 / 31:24	0x2 / 23:16	0x1 / 15:8	0x0 / 7:0
0x000 ICM_UIHVAL0	01	23	45	67
0x004 ICM_UIHVAL1	89	ab	cd	ef
0x008 ICM_UIHVAL2	fe	dc	ba	98
0x00C ICM_UIHVAL3	76	54	32	10
0x010 ICM_UIHVAL4	f0	e1	d2	c3