Hi expers,
I try to boot from spi nor flash (ospi1), the rom code load tiboot3.bin from nor flash success but uboot r5 spl run sf probe got stuck while read sfdp.
spi_nor_scan->
spi_nor_init_params->
spi_nor_parse_sfdp->
spi_nor_read_sfdp->
...
cadence_qspi_apb_indirect_read_execute
static int
cadence_qspi_apb_indirect_read_execute(struct cadence_spi_platdata *plat,
unsigned int n_rx, u8 *rxbuf)
{
unsigned int remaining = n_rx;
unsigned int bytes_to_read = 0;
int ret;
writel(n_rx, plat->regbase + CQSPI_REG_INDIRECTRDBYTES);
/* Start the indirect read transfer */
writel(CQSPI_REG_INDIRECTRD_START,
plat->regbase + CQSPI_REG_INDIRECTRD);
while (remaining > 0) {
ret = cadence_qspi_wait_for_data(plat);
if (ret < 0) {
printf("Indirect write timed out (%i)\n", ret);
goto failrd;
}
bytes_to_read = ret;
while (bytes_to_read != 0) {
bytes_to_read *= plat->fifo_width;
bytes_to_read = bytes_to_read > remaining ?
remaining : bytes_to_read;
/*
* Handle non-4-byte aligned access to avoid
* data abort.
*/
if (((uintptr_t)rxbuf % 4) || (bytes_to_read % 4))
readsb(plat->ahbbase, rxbuf, bytes_to_read);
else
readsl(plat->ahbbase, rxbuf,
bytes_to_read >> 2);
rxbuf += bytes_to_read;
remaining -= bytes_to_read;
bytes_to_read = cadence_qspi_get_rd_sram_level(plat);
}
}
the vaule of bytes_to_read always 16.
But the nor flash access is normal on uboot-a72.
Can you provide some suggestions (sdk ti-processor-sdk-linux-j721s2-evm-08_00_04_05)?
Regards,
Li quan
