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bsps/xqspipsu: Break out RDID

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Expose a function to read the NOR flash chip ID information beyond the
minimum 3 bytes for the lookup table.
This commit is contained in:
Kinsey Moore
2023-05-22 14:20:17 -05:00
committed by Joel Sherrill
parent 109479e874
commit 853429c3f8
2 changed files with 49 additions and 21 deletions
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15
bsps/include/dev/spi/xqspipsu-flash-helper.h
View File

@@ -155,3 +155,18 @@ u32 QspiPsu_NOR_Get_Device_Size(XQspiPsu *QspiPsuPtr);
*
******************************************************************************/
u32 QspiPsu_NOR_Get_Sector_Size(XQspiPsu *QspiPsuPtr);
/*****************************************************************************/
/**
*
* This function performs a read of the RDID configuration space.
*
* @param QspiPsuPtr is a pointer to the QSPIPSU driver component to use.
* @param ReadBfrPtr is a pointer to a buffer to be filled with
* configuration data.
* @param ReadLen is the total length of the configuration space to read.
*
* @return XST_SUCCESS if successful, else XST_FAILURE.
*
******************************************************************************/
int QspiPsu_NOR_RDID(XQspiPsu *QspiPsuPtr, u8 *ReadBfrPtr, u32 ReadLen);

55
bsps/shared/dev/spi/xqspipsu-flash-helper.c
View File

@@ -274,6 +274,37 @@ static void QspiPsuHandler(
}
}
int QspiPsu_NOR_RDID(XQspiPsu *QspiPsuPtr, u8 *ReadBfrPtr, u32 ReadLen)
{
int Status;
/*
* Read ID
*/
TxBfrPtr = READ_ID;
FlashMsg[0].TxBfrPtr = &TxBfrPtr;
FlashMsg[0].RxBfrPtr = NULL;
FlashMsg[0].ByteCount = 1;
FlashMsg[0].BusWidth = XQSPIPSU_SELECT_MODE_SPI;
FlashMsg[0].Flags = XQSPIPSU_MSG_FLAG_TX;
FlashMsg[1].TxBfrPtr = NULL;
FlashMsg[1].RxBfrPtr = ReadBfrPtr;
FlashMsg[1].ByteCount = ReadLen;
FlashMsg[1].BusWidth = XQSPIPSU_SELECT_MODE_SPI;
FlashMsg[1].Flags = XQSPIPSU_MSG_FLAG_RX;
TransferInProgress = TRUE;
Status = XQspiPsu_InterruptTransfer(QspiPsuPtr, FlashMsg, 2);
if (Status != XST_SUCCESS) {
return XST_FAILURE;
}
while (TransferInProgress);
rtems_cache_invalidate_multiple_data_lines(ReadBfrPtr, ReadLen);
return XST_SUCCESS;
}
/*****************************************************************************/
/**
*
@@ -288,33 +319,15 @@ static void QspiPsuHandler(
*****************************************************************************/
static int FlashReadID(XQspiPsu *QspiPsuPtr)
{
int Status;
u32 ReadId = 0;
u32 ReadLen = 3;
int Status;
/*
* Read ID
*/
TxBfrPtr = READ_ID;
FlashMsg[0].TxBfrPtr = &TxBfrPtr;
FlashMsg[0].RxBfrPtr = NULL;
FlashMsg[0].ByteCount = 1;
FlashMsg[0].BusWidth = XQSPIPSU_SELECT_MODE_SPI;
FlashMsg[0].Flags = XQSPIPSU_MSG_FLAG_TX;
FlashMsg[1].TxBfrPtr = NULL;
FlashMsg[1].RxBfrPtr = ReadBfrPtr;
FlashMsg[1].ByteCount = 3;
FlashMsg[1].BusWidth = XQSPIPSU_SELECT_MODE_SPI;
FlashMsg[1].Flags = XQSPIPSU_MSG_FLAG_RX;
TransferInProgress = TRUE;
Status = XQspiPsu_InterruptTransfer(QspiPsuPtr, FlashMsg, 2);
Status = QspiPsu_NOR_RDID(QspiPsuPtr, ReadBfrPtr, ReadLen);
if (Status != XST_SUCCESS) {
return XST_FAILURE;
}
while (TransferInProgress);
rtems_cache_invalidate_multiple_data_lines(ReadBfrPtr, 3);
/* In case of dual, read both and ensure they are same make/size */
/*