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49 * Interface to the on chip key memory. Key memory is
50 * 8k on chip that is inaccessible from off chip. It can
51 * also be cleared using an external hardware pin.
53 * <hr>$Revision: 70030 $<hr>
57 #ifndef __CVMX_KEY_H__
58 #define __CVMX_KEY_H__
64 #define CVMX_KEY_MEM_SIZE 8192 /* Size in bytes */
68 * Read from KEY memory
70 * @param address Address (byte) in key memory to read
71 * 0 <= address < CVMX_KEY_MEM_SIZE
72 * @return Value from key memory
74 static inline uint64_t cvmx_key_read(uint64_t address)
79 ptr.sio.mem_region = CVMX_IO_SEG;
81 ptr.sio.did = CVMX_OCT_DID_KEY_RW;
82 ptr.sio.offset = address;
84 return cvmx_read_csr(ptr.u64);
91 * @param address Address (byte) in key memory to write
92 * 0 <= address < CVMX_KEY_MEM_SIZE
93 * @param value Value to write to key memory
95 static inline void cvmx_key_write(uint64_t address, uint64_t value)
100 ptr.sio.mem_region = CVMX_IO_SEG;
102 ptr.sio.did = CVMX_OCT_DID_KEY_RW;
103 ptr.sio.offset = address;
105 cvmx_write_io(ptr.u64, value);
109 /* CSR typedefs have been moved to cvmx-key-defs.h */
115 #endif /* __CVMX_KEY_H__ */