casper_driver

Enumerations
enum	casper_operation_t { ,   kCASPER_OpMul6464Sum,   kCASPER_OpMul6464FullSum,   kCASPER_OpMul6464Reduce,   kCASPER_OpAdd64 = 0x08,   kCASPER_OpSub64 = 0x09,   kCASPER_OpDouble64 = 0x0A,   kCASPER_OpXor64 = 0x0B,   kCASPER_OpRSub64 = 0x0C,   kCASPER_OpShiftLeft32,   kCASPER_OpShiftRight32 = 0x11,   kCASPER_OpCopy = 0x14,   kCASPER_OpRemask = 0x15,   kCASPER_OpFill = 0x16,   kCASPER_OpZero = 0x17,   kCASPER_OpCompare = 0x18,   kCASPER_OpCompareFast = 0x19 }
	CASPER operation. More...

Functions
void	CASPER_Init (CASPER_Type *base)
	Enables clock and disables reset for CASPER peripheral. More...
void	CASPER_Deinit (CASPER_Type *base)
	Disables clock for CASPER peripheral. More...

Driver version
#define	FSL_CASPER_DRIVER_VERSION   (MAKE_VERSION(2, 0, 9))
	CASPER driver version. More...

Detailed Description

Macro Definition Documentation

#define FSL_CASPER_DRIVER_VERSION   (MAKE_VERSION(2, 0, 9))

Version 2.0.9.

Current version: 2.0.9

Change log:

• Version 2.0.0
  • Initial version
• Version 2.0.1
  • Bug fix KPSDK-24531 double_scalar_multiplication() result may be all zeroes for some specific input
• Version 2.0.2
  • Bug fix KPSDK-25015 CASPER_MEMCPY hard-fault on LPC55xx when both source and destination buffers are outside of CASPER_RAM
• Version 2.0.3
  • Bug fix KPSDK-28107 RSUB, FILL and ZERO operations not implemented in enum _casper_operation.
• Version 2.0.4
  • For GCC compiler, enforce O1 optimize level, specifically to remove strict-aliasing option. This driver is very specific and requires -fno-strict-aliasing.
• Version 2.0.5
  • Fix sign-compare warning.
• Version 2.0.6
  • Fix IAR Pa082 warning.
• Version 2.0.7
  • Fix MISRA-C 2012 issue.
• Version 2.0.8
  • Add feature macro for CASPER_RAM_OFFSET.
• Version 2.0.9
  • Remove unused function Jac_oncurve().
  • Fix ECC384 build.

Enumeration Type Documentation

enum casper_operation_t

Enumerator
kCASPER_OpMul6464Sum	Walking 1 or more of J loop, doing r=a*b using 64x64=128.
kCASPER_OpMul6464FullSum	Walking 1 or more of J loop, doing c,r=r+a*b using 64x64=128, but assume inner j loop.
kCASPER_OpMul6464Reduce	Walking 1 or more of J loop, doing c,r=r+a*b using 64x64=128, but sum all of w.
kCASPER_OpAdd64	Walking 1 or more of J loop, doing c,r[-1]=r+a*b using 64x64=128, but skip 1st write.
kCASPER_OpSub64	Walking add with off_AB, and in/out off_RES doing c,r=r+a+c using 64+64=65.
kCASPER_OpDouble64	Walking subtract with off_AB, and in/out off_RES doing r=r-a using 64-64=64, with last borrow implicit if any.
kCASPER_OpXor64	Walking add to self with off_RES doing c,r=r+r+c using 64+64=65.
kCASPER_OpRSub64	Walking XOR with off_AB, and in/out off_RES doing r=r^a using 64^64=64.
kCASPER_OpShiftLeft32	Walking subtract with off_AB, and in/out off_RES using r=a-r.
kCASPER_OpShiftRight32	Walking shift left doing r1,r=(b*D)|r1, where D is 2^amt and is loaded by app (off_CD not used)
kCASPER_OpCopy	Walking shift right doing r,r1=(b*D)|r1, where D is 2^(32-amt) and is loaded by app (off_CD not used) and off_RES starts at MSW.
kCASPER_OpRemask	Copy from ABoff to resoff, 64b at a time.
kCASPER_OpFill	Copy and mask from ABoff to resoff, 64b at a time.
kCASPER_OpZero	Fill RESOFF using 64 bits at a time with value in A and B.
kCASPER_OpCompare	Fill RESOFF using 64 bits at a time of 0s.
kCASPER_OpCompareFast	Compare two arrays, running all the way to the end.

Function Documentation

void CASPER_Init

(

CASPER_Type *

base

)

Enable clock and disable reset for CASPER.

Parameters

base	CASPER base address

void CASPER_Deinit

(

CASPER_Type *

base

)

Disable clock and enable reset.

Parameters

base	CASPER base address