📄 xutil_memtest.c
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* Restore the reference 'Val' to the
* initial value
*/
Val = ~(1 << j);
/* Read the values from each location that was written */
for (i = 0L; i < 16; i++)
{
/* read memory location */
Word = Addr[i];
if (Word != Val)
{
return XST_MEMTEST_FAILED;
}
Val = ~((Xuint16) RotateLeft(~Val, 16));
}
}
if (Subtest != XUT_ALLMEMTESTS)
{
return XST_SUCCESS;
}
} /* end of case 3 */
/* fall through case statement */
case XUT_INVERSEADDR:
{
/* Fill the memory with inverse of address */
for (i = 0L; i < Words; i++)
{
/* write memory location */
Val = (Xuint16) (~((Xuint32)(&Addr[i])));
Addr[i] = Val;
}
/*
* Check every word within the Words
* of tested memory
*/
for (i = 0L; i < Words; i++)
{
/* read memory location */
Word = Addr[i];
Val = (Xuint16) (~((Xuint32)(&Addr[i])));
if ((Word ^ Val) != 0x0000)
{
return XST_MEMTEST_FAILED;
}
}
if (Subtest != XUT_ALLMEMTESTS)
{
return XST_SUCCESS;
}
} /* end of case 4 */
/* fall through case statement */
case XUT_FIXEDPATTERN:
{
/*
* Generate an initial value for
* memory testing
*/
if (Pattern == 0)
{
Val = 0xDEAD;
}
else
{
Val = Pattern;
}
/*
* Fill the memory with fixed pattern
*/
for (i = 0L; i < Words; i++)
{
/* write memory location */
Addr[i] = Val;
}
/*
* Check every word within the Words
* of tested memory and compare it
* with the fixed pattern
*/
for (i = 0L; i < Words; i++)
{
/* read memory location */
Word = Addr[i];
if (Word != Val)
{
return XST_MEMTEST_FAILED;
}
}
if (Subtest != XUT_ALLMEMTESTS)
{
return XST_SUCCESS;
}
} /* end of case 5 */
/* this break is for the prior fall through case statements */
break ;
default:
{
return XST_MEMTEST_FAILED;
}
} /* end of switch */
/* Successfully passed memory test ! */
return XST_SUCCESS;
}
/*****************************************************************************/
/**
*
* Performs a destructive 8-bit wide memory test.
*
* @param Addr is a pointer to the region of memory to be tested.
* @param Words is the length of the block.
* @param Pattern is the constant used for the constant pattern test, if 0,
* 0xDEADBEEF is used.
* @param Subtest is the test selected. See xutil.h for possible values.
*
* @return
*
* - XST_MEMTEST_FAILED is returned for a failure
* - XST_SUCCESS is returned for a pass
*
* @note
*
* Used for spaces where the address range of the region is smaller than
* the data width. If the memory range is greater than 2 ** width,
* the patterns used in XUT_WALKONES and XUT_WALKZEROS will repeat on a
* boundry of a power of two making it more difficult to detect addressing
* errors. The XUT_INCREMENT and XUT_INVERSEADDR tests suffer the same
* problem. Ideally, if large blocks of memory are to be tested, break
* them up into smaller regions of memory to allow the test patterns used
* not to repeat over the region tested.
*
*****************************************************************************/
XStatus XUtil_MemoryTest8(Xuint8 *Addr,Xuint32 Words, Xuint8 Pattern,
Xuint8 Subtest)
{
Xuint32 i;
Xuint32 j;
Xuint8 Val= XUT_MEMTEST_INIT_VALUE;
Xuint8 FirstVal= XUT_MEMTEST_INIT_VALUE;
Xuint8 Word;
XASSERT_NONVOID(Addr != XNULL);
XASSERT_NONVOID(Words != 0);
XASSERT_NONVOID(Subtest <= XUT_MAXTEST);
/*
* select the proper Subtest(s)
*/
switch (Subtest)
{
case XUT_ALLMEMTESTS:
/* this case executes all of the Subtests */
/* fall through case statement */
case XUT_INCREMENT:
{
/*
* Fill the memory with incrementing
* values starting from 'FirstVal'
*/
for (i = 0L; i < Words; i++)
{
/* write memory location */
Addr[i] = Val;
Val++;
}
/*
* Restore the reference 'Val' to the
* initial value
*/
Val = FirstVal;
/*
* Check every word within the Words
* of tested memory and compare it
* with the incrementing reference
* Val
*/
for (i = 0L; i < Words; i++)
{
/* read memory location */
Word = Addr[i];
if (Word != Val)
{
return XST_MEMTEST_FAILED;
}
Val++;
}
if (Subtest != XUT_ALLMEMTESTS)
{
return XST_SUCCESS;
}
} /* end of case 1 */
/* fall through case statement */
case XUT_WALKONES:
{
/*
* set up to cycle through all possible initial
* test Patterns for walking ones test
*/
for (j = 0L; j < 8; j++)
{
/*
* Generate an initial value for walking ones test to test
* for bad data bits
*/
Val = 1 << j;
/*
* START walking ones test
* Write a one to each data bit indifferent locations
*/
for (i = 0L; i < 8; i++)
{
/* write memory location */
Addr[i] = Val;
Val = (Xuint8) RotateLeft(Val, 8);
}
/*
* Restore the reference 'Val' to the
* initial value
*/
Val = 1 << j;
/* Read the values from each location that was written */
for (i = 0L; i < 8; i++)
{
/* read memory location */
Word = Addr[i];
if (Word != Val)
{
return XST_MEMTEST_FAILED;
}
Val = (Xuint8) RotateLeft(Val, 8);
}
}
if (Subtest != XUT_ALLMEMTESTS)
{
return XST_SUCCESS;
}
} /* end of case 2 */
/* fall through case statement */
case XUT_WALKZEROS:
{
/*
* set up to cycle through all possible initial test
* Patterns for walking zeros test
*/
for (j = 0L; j < 8; j++)
{
/*
* Generate an initial value for walking ones test to test
* for bad data bits
*/
Val = ~(1 << j);
/*
* START walking zeros test
* Write a one to each data bit indifferent locations
*/
for (i = 0L; i < 8; i++)
{
/* write memory location */
Addr[i] = Val;
Val = ~((Xuint8) RotateLeft(~Val, 8));
}
/*
* Restore the reference 'Val' to the
* initial value
*/
Val = ~(1 << j);
/* Read the values from each location that was written */
for (i = 0L; i < 8; i++)
{
/* read memory location */
Word = Addr[i];
if (Word != Val)
{
return XST_MEMTEST_FAILED;
}
Val = ~((Xuint8) RotateLeft(~Val, 8));
}
}
if (Subtest != XUT_ALLMEMTESTS)
{
return XST_SUCCESS;
}
} /* end of case 3 */
/* fall through case statement */
case XUT_INVERSEADDR:
{
/* Fill the memory with inverse of address */
for (i = 0L; i < Words; i++)
{
/* write memory location */
Val = (Xuint8) (~((Xuint32)(&Addr[i])));
Addr[i] = Val;
}
/*
* Check every word within the Words
* of tested memory
*/
for (i = 0L; i < Words; i++)
{
/* read memory location */
Word = Addr[i];
Val = (Xuint8) (~((Xuint32)(&Addr[i])));
if ((Word ^ Val) != 0x00)
{
return XST_MEMTEST_FAILED;
}
}
if (Subtest != XUT_ALLMEMTESTS)
{
return XST_SUCCESS;
}
} /* end of case 4 */
/* fall through case statement */
case XUT_FIXEDPATTERN:
{
/*
* Generate an initial value for
* memory testing
*/
if (Pattern == 0)
{
Val = 0xA5;
}
else
{
Val = Pattern;
}
/*
* Fill the memory with fixed pattern
*/
for (i = 0L; i < Words; i++)
{
/* write memory location */
Addr[i] = Val;
}
/*
* Check every word within the Words
* of tested memory and compare it
* with the fixed pattern
*/
for (i = 0L; i < Words; i++)
{
/* read memory location */
Word = Addr[i];
if (Word != Val)
{
return XST_MEMTEST_FAILED;
}
}
if (Subtest != XUT_ALLMEMTESTS)
{
return XST_SUCCESS;
}
} /* end of case 5 */
/* this break is for the prior fall through case statements */
break ;
default:
{
return XST_MEMTEST_FAILED;
}
} /* end of switch */
/* Successfully passed memory test ! */
return XST_SUCCESS;
}
/*****************************************************************************/
/**
*
* Rotates the provided value to the left one bit position
*
* @param Input is value to be rotated to the left
* @param Width is the number of bits in the input data
*
* @return
*
* The resulting unsigned long value of the rotate left
*
* @note
*
* None.
*
*****************************************************************************/
static Xuint32 RotateLeft(Xuint32 Input, Xuint8 Width)
{
Xuint32 Msb;
Xuint32 ReturnVal;
Xuint32 WidthMask;
Xuint32 MsbMask;
/*
* set up the WidthMask and the MsbMask
*/
MsbMask = 1 << (Width-1);
WidthMask = (MsbMask << 1) - 1;
/*
* set the width of the Input to the correct width
*/
Input = Input & WidthMask;
Msb = Input & MsbMask;
ReturnVal = Input << 1;
if (Msb != 0x00000000)
{
ReturnVal = ReturnVal | 0x00000001;
}
ReturnVal = ReturnVal & WidthMask;
return (ReturnVal);
}
#ifdef ROTATE_RIGHT
/*****************************************************************************/
/**
*
* Rotates the provided value to the right one bit position
*
* @param Input is value to be rotated to the right
* @param Width is the number of bits in the input data
*
* @return
*
* The resulting Xuint32 value of the rotate right
*
* @note
*
* None.
*
*****************************************************************************/
static Xuint32 RotateRight(Xuint32 Input, Xuint8 Width)
{
Xuint32 Lsb;
Xuint32 ReturnVal;
Xuint32 WidthMask;
Xuint32 MsbMask;
/*
* set up the WidthMask and the MsbMask
*/
MsbMask = 1 << (Width-1);
WidthMask = (MsbMask << 1) - 1;
/*
* set the width of the Input to the correct width
*/
Input = Input & WidthMask;
ReturnVal = Input >> 1;
Lsb = Input & 0x00000001;
if (Lsb != 0x00000000)
{
ReturnVal = ReturnVal | MsbMask;
}
ReturnVal = ReturnVal & WidthMask;
return (ReturnVal);
}
#endif /* ROTATE_RIGHT */⌨️ 快捷键说明
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