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bsps/xnandpsu: Allow manipulation of BBT

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Expose functions to directly manipulate the bad block table (BBT). These
functions are necessary to correct possible BBT corruption caused by
bugs in the BBT management layer.
This commit is contained in:
Kinsey Moore
2023-12-01 13:18:28 -06:00
committed by Joel Sherrill
parent 437053282d
commit 3798c5735d
2 changed files with 87 additions and 0 deletions
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41
bsps/shared/dev/nand/xnandpsu_bbm.c
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@@ -62,7 +62,9 @@ static s32 XNandPsu_WriteBbt(XNandPsu *InstancePtr, XNandPsu_BbtDesc *Desc,
static s32 XNandPsu_MarkBbt(XNandPsu* InstancePtr, XNandPsu_BbtDesc *Desc,
u32 Target);
#ifndef __rtems__
static s32 XNandPsu_UpdateBbt(XNandPsu *InstancePtr, u32 Target);
#endif
/************************** Variable Definitions *****************************/
@@ -770,7 +772,11 @@ Out:
* - XST_FAILURE if fail.
*
******************************************************************************/
#ifdef __rtems__
s32 XNandPsu_UpdateBbt(XNandPsu *InstancePtr, u32 Target)
#else
static s32 XNandPsu_UpdateBbt(XNandPsu *InstancePtr, u32 Target)
#endif
{
s32 Status;
u8 Version;
@@ -919,11 +925,22 @@ s32 XNandPsu_IsBlockBad(XNandPsu *InstancePtr, u32 Block)
*
******************************************************************************/
s32 XNandPsu_MarkBlockBad(XNandPsu *InstancePtr, u32 Block)
#ifdef __rtems__
{
return XNandPsu_MarkBlock(InstancePtr, Block, XNANDPSU_BLOCK_BAD );
}
s32 XNandPsu_MarkBlock(XNandPsu *InstancePtr, u32 Block, u8 BlockMark)
#endif
{
Xil_AssertNonvoid(InstancePtr != NULL);
Xil_AssertNonvoid(InstancePtr->IsReady == XIL_COMPONENT_IS_READY)
Xil_AssertNonvoid(Block < InstancePtr->Geometry.NumBlocks);
#ifdef __rtems__
BlockMark &= XNANDPSU_BLOCK_TYPE_MASK;
#endif
u8 Data;
u8 BlockShift;
u32 BlockOffset;
@@ -941,7 +958,11 @@ s32 XNandPsu_MarkBlockBad(XNandPsu *InstancePtr, u32 Block)
/* Mark the block as bad in the RAM based Bad Block Table */
OldVal = Data;
Data &= ~(XNANDPSU_BLOCK_TYPE_MASK << BlockShift);
#ifdef __rtems__
Data |= (BlockMark << BlockShift);
#else
Data |= (XNANDPSU_BLOCK_BAD << BlockShift);
#endif
NewVal = Data;
InstancePtr->Bbt[BlockOffset] = Data;
@@ -957,4 +978,24 @@ s32 XNandPsu_MarkBlockBad(XNandPsu *InstancePtr, u32 Block)
Out:
return Status;
}
#ifdef __rtems__
bool XNandPsu_StageBlockMark(XNandPsu *InstancePtr, u32 Block, u8 BlockMark)
{
u8 BlockShift;
u32 BlockOffset;
u8 OldVal;
BlockMark &= XNANDPSU_BLOCK_TYPE_MASK;
BlockOffset = Block >> XNANDPSU_BBT_BLOCK_SHIFT;
BlockShift = XNandPsu_BbtBlockShift(Block);
OldVal = InstancePtr->Bbt[BlockOffset] >> BlockShift;
OldVal &= XNANDPSU_BLOCK_TYPE_MASK;
InstancePtr->Bbt[BlockOffset] &= ~(XNANDPSU_BLOCK_TYPE_MASK << BlockShift);
InstancePtr->Bbt[BlockOffset] |= (BlockMark << BlockShift);
return BlockMark != OldVal;
}
#endif
/** @} */