About Kernel Documentation Linux Kernel Contact Linux Resources Linux Blog

Documentation / devicetree / bindings / crypto / fsl-sec2.txt




Custom Search

Based on kernel version 3.15.4. Page generated on 2014-07-07 09:00 EST.

1	Freescale SoC SEC Security Engines versions 2.x-3.x
2	
3	Required properties:
4	
5	- compatible : Should contain entries for this and backward compatible
6	  SEC versions, high to low, e.g., "fsl,sec2.1", "fsl,sec2.0"
7	- reg : Offset and length of the register set for the device
8	- interrupts : the SEC's interrupt number
9	- fsl,num-channels : An integer representing the number of channels
10	  available.
11	- fsl,channel-fifo-len : An integer representing the number of
12	  descriptor pointers each channel fetch fifo can hold.
13	- fsl,exec-units-mask : The bitmask representing what execution units
14	  (EUs) are available. It's a single 32-bit cell. EU information
15	  should be encoded following the SEC's Descriptor Header Dword
16	  EU_SEL0 field documentation, i.e. as follows:
17	
18		bit 0  = reserved - should be 0
19		bit 1  = set if SEC has the ARC4 EU (AFEU)
20		bit 2  = set if SEC has the DES/3DES EU (DEU)
21		bit 3  = set if SEC has the message digest EU (MDEU/MDEU-A)
22		bit 4  = set if SEC has the random number generator EU (RNG)
23		bit 5  = set if SEC has the public key EU (PKEU)
24		bit 6  = set if SEC has the AES EU (AESU)
25		bit 7  = set if SEC has the Kasumi EU (KEU)
26		bit 8  = set if SEC has the CRC EU (CRCU)
27		bit 11 = set if SEC has the message digest EU extended alg set (MDEU-B)
28	
29	remaining bits are reserved for future SEC EUs.
30	
31	- fsl,descriptor-types-mask : The bitmask representing what descriptors
32	  are available. It's a single 32-bit cell. Descriptor type information
33	  should be encoded following the SEC's Descriptor Header Dword DESC_TYPE
34	  field documentation, i.e. as follows:
35	
36		bit 0  = set if SEC supports the aesu_ctr_nonsnoop desc. type
37		bit 1  = set if SEC supports the ipsec_esp descriptor type
38		bit 2  = set if SEC supports the common_nonsnoop desc. type
39		bit 3  = set if SEC supports the 802.11i AES ccmp desc. type
40		bit 4  = set if SEC supports the hmac_snoop_no_afeu desc. type
41		bit 5  = set if SEC supports the srtp descriptor type
42		bit 6  = set if SEC supports the non_hmac_snoop_no_afeu desc.type
43		bit 7  = set if SEC supports the pkeu_assemble descriptor type
44		bit 8  = set if SEC supports the aesu_key_expand_output desc.type
45		bit 9  = set if SEC supports the pkeu_ptmul descriptor type
46		bit 10 = set if SEC supports the common_nonsnoop_afeu desc. type
47		bit 11 = set if SEC supports the pkeu_ptadd_dbl descriptor type
48	
49	  ..and so on and so forth.
50	
51	Optional properties:
52	
53	- interrupt-parent : the phandle for the interrupt controller that
54	  services interrupts for this device.
55	
56	Example:
57	
58		/* MPC8548E */
59		crypto@30000 {
60			compatible = "fsl,sec2.1", "fsl,sec2.0";
61			reg = <0x30000 0x10000>;
62			interrupts = <29 2>;
63			interrupt-parent = <&mpic>;
64			fsl,num-channels = <4>;
65			fsl,channel-fifo-len = <24>;
66			fsl,exec-units-mask = <0xfe>;
67			fsl,descriptor-types-mask = <0x12b0ebf>;
68		};
Hide Line Numbers
About Kernel Documentation Linux Kernel Contact Linux Resources Linux Blog

Information is copyright its respective author. All material is available from the Linux Kernel Source distributed under a GPL License. This page is provided as a free service by mjmwired.net.