diff options
Diffstat (limited to 'Documentation/devicetree/bindings/nvmem/xlnx,zynqmp-nvmem.txt')
| -rw-r--r-- | Documentation/devicetree/bindings/nvmem/xlnx,zynqmp-nvmem.txt | 90 |
1 files changed, 89 insertions, 1 deletions
diff --git a/Documentation/devicetree/bindings/nvmem/xlnx,zynqmp-nvmem.txt b/Documentation/devicetree/bindings/nvmem/xlnx,zynqmp-nvmem.txt index 4881561b3a02..be126ccf4802 100644 --- a/Documentation/devicetree/bindings/nvmem/xlnx,zynqmp-nvmem.txt +++ b/Documentation/devicetree/bindings/nvmem/xlnx,zynqmp-nvmem.txt @@ -25,9 +25,78 @@ firmware { #size-cells = <1>; /* Data cells */ - soc_revision: soc_revision { + soc_revision: soc_revision@0 { reg = <0x0 0x4>; }; + /* + * efuse memory access: + * all the efuse feilds need to be read + * with the exact size specified in the node + */ + /* DNA */ + efuse_dna: efuse_dna@c { + reg = <0xc 0xc>; + }; + /* User 0 */ + efuse_usr0: efuse_usr0@20 { + reg = <0x20 0x4>; + }; + /* User 1 */ + efuse_usr1: efuse_usr1@24 { + reg = <0x24 0x4>; + }; + /* User 2 */ + efuse_usr2: efuse_usr2@28 { + reg = <0x28 0x4>; + }; + /* User 3 */ + efuse_usr3: efuse_usr3@2c { + reg = <0x2c 0x4>; + }; + /* User 4 */ + efuse_usr4: efuse_usr4@30 { + reg = <0x30 0x4>; + }; + /* User 5 */ + efuse_usr5: efuse_usr5@34 { + reg = <0x34 0x4>; + }; + /* User 6 */ + efuse_usr6: efuse_usr6@38 { + reg = <0x38 0x4>; + }; + /* User 7 */ + efuse_usr7: efuse_usr7@3c { + reg = <0x3c 0x4>; + }; + /* Misc user control bits */ + efuse_miscusr: efuse_miscusr@40 { + reg = <0x40 0x4>; + }; + /* PUF chash */ + efuse_chash: efuse_chash@50 { + reg = <0x50 0x4>; + }; + /* PUF misc */ + efuse_pufmisc: efuse_pufmisc@54 { + reg = <0x54 0x4>; + }; + /* SEC_CTRL */ + efuse_sec: efuse_sec@58 { + reg = <0x58 0x4>; + }; + /* SPK ID */ + efuse_spkid: efuse_spkid@5c { + reg = <0x5c 0x4>; + }; + /* PPK0 hash */ + efuse_ppk0hash: efuse_ppk0hash@a0 { + reg = <0xa0 0x30>; + }; + /* PPK1 hash */ + efuse_ppk1hash: efuse_ppk1hash@d0 { + reg = <0xd0 0x30>; + }; }; }; }; @@ -44,3 +113,22 @@ For example: ... }; + +To program efuse memory, one should request specified bytes of size as below, +NOTE: Efuse bits once programmed cannot be reverted. + + - | TYPE | OFFSET | SIZE(bytes) | + - |User-0 | 0x20 | 0x4 | + - |User-1 | 0x24 | 0x4 | + - |User-2 | 0x28 | 0x4 | + - |User-3 | 0x2C | 0x4 | + - |User-4 | 0x30 | 0x4 | + - |User-5 | 0x34 | 0x4 | + - |User-6 | 0x38 | 0x4 | + - |User-7 | 0x3c | 0x4 | + - |Misc User | 0x40 | 0x4 | + - |SEC_CTRL | 0x58 | 0x4 | + - |SPK ID | 0x5C | 0x4 | + - |AES KEY | 0x60 | 0x20 | + - |PPK0 hash | 0xA0 | 0x30 | + - |PPK1 hash | 0xD0 | 0x30 | |