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65 lines
2.7 KiB
65 lines
2.7 KiB
Freescale SoC SEC Security Engines versions 1.x-2.x-3.x |
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Required properties: |
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- compatible : Should contain entries for this and backward compatible |
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SEC versions, high to low, e.g., "fsl,sec2.1", "fsl,sec2.0" (SEC2/3) |
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e.g., "fsl,sec1.2", "fsl,sec1.0" (SEC1) |
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warning: SEC1 and SEC2 are mutually exclusive |
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- reg : Offset and length of the register set for the device |
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- interrupts : the SEC's interrupt number |
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- fsl,num-channels : An integer representing the number of channels |
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available. |
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- fsl,channel-fifo-len : An integer representing the number of |
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descriptor pointers each channel fetch fifo can hold. |
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- fsl,exec-units-mask : The bitmask representing what execution units |
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(EUs) are available. It's a single 32-bit cell. EU information |
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should be encoded following the SEC's Descriptor Header Dword |
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EU_SEL0 field documentation, i.e. as follows: |
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bit 0 = reserved - should be 0 |
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bit 1 = set if SEC has the ARC4 EU (AFEU) |
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bit 2 = set if SEC has the DES/3DES EU (DEU) |
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bit 3 = set if SEC has the message digest EU (MDEU/MDEU-A) |
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bit 4 = set if SEC has the random number generator EU (RNG) |
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bit 5 = set if SEC has the public key EU (PKEU) |
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bit 6 = set if SEC has the AES EU (AESU) |
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bit 7 = set if SEC has the Kasumi EU (KEU) |
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bit 8 = set if SEC has the CRC EU (CRCU) |
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bit 11 = set if SEC has the message digest EU extended alg set (MDEU-B) |
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remaining bits are reserved for future SEC EUs. |
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- fsl,descriptor-types-mask : The bitmask representing what descriptors |
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are available. It's a single 32-bit cell. Descriptor type information |
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should be encoded following the SEC's Descriptor Header Dword DESC_TYPE |
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field documentation, i.e. as follows: |
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bit 0 = set if SEC supports the aesu_ctr_nonsnoop desc. type |
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bit 1 = set if SEC supports the ipsec_esp descriptor type |
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bit 2 = set if SEC supports the common_nonsnoop desc. type |
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bit 3 = set if SEC supports the 802.11i AES ccmp desc. type |
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bit 4 = set if SEC supports the hmac_snoop_no_afeu desc. type |
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bit 5 = set if SEC supports the srtp descriptor type |
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bit 6 = set if SEC supports the non_hmac_snoop_no_afeu desc.type |
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bit 7 = set if SEC supports the pkeu_assemble descriptor type |
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bit 8 = set if SEC supports the aesu_key_expand_output desc.type |
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bit 9 = set if SEC supports the pkeu_ptmul descriptor type |
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bit 10 = set if SEC supports the common_nonsnoop_afeu desc. type |
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bit 11 = set if SEC supports the pkeu_ptadd_dbl descriptor type |
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..and so on and so forth. |
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Example: |
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/* MPC8548E */ |
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crypto@30000 { |
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compatible = "fsl,sec2.1", "fsl,sec2.0"; |
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reg = <0x30000 0x10000>; |
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interrupts = <29 2>; |
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interrupt-parent = <&mpic>; |
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fsl,num-channels = <4>; |
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fsl,channel-fifo-len = <24>; |
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fsl,exec-units-mask = <0xfe>; |
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fsl,descriptor-types-mask = <0x12b0ebf>; |
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};
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