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Merge pull request #1968 from VOGL-electronic/fix_liblitespi 

liblitespi: Fix #1967
This commit is contained in:
enjoy-digital 2024-05-28 15:43:07 +02:00 committed by GitHub
parent 7a3b3dcfa2 025149c6c5
commit 23e654db4c
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GPG Key ID: B5690EEEBB952194
1 changed files with 27 additions and 10 deletions
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37
litex/soc/software/liblitespi/spiflash.c
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@ -74,23 +74,42 @@ void spiflash_dummy_bits_setup(unsigned int dummy_bits)
#ifdef CSR_SPIFLASH_CORE_MASTER_CS_ADDR
static void spiflash_len_mask_width_write(uint32_t len, uint32_t width, uint32_t mask)
{
uint32_t tmp = len & ((2 ^ CSR_SPIFLASH_CORE_MASTER_PHYCONFIG_LEN_SIZE) - 1);
uint32_t word = tmp << CSR_SPIFLASH_CORE_MASTER_PHYCONFIG_LEN_OFFSET;
tmp = width & ((2 ^ CSR_SPIFLASH_CORE_MASTER_PHYCONFIG_WIDTH_SIZE) - 1);
word |= tmp << CSR_SPIFLASH_CORE_MASTER_PHYCONFIG_WIDTH_OFFSET;
tmp = mask & ((2 ^ CSR_SPIFLASH_CORE_MASTER_PHYCONFIG_MASK_SIZE) - 1);
word |= tmp << CSR_SPIFLASH_CORE_MASTER_PHYCONFIG_MASK_OFFSET;
spiflash_core_master_phyconfig_write(word);
}
static bool spiflash_tx_ready(void)
{
return (spiflash_core_master_status_read() >> CSR_SPIFLASH_CORE_MASTER_STATUS_TX_READY_OFFSET) & 1;
}
static bool spiflash_rx_ready(void)
{
return (spiflash_core_master_status_read() >> CSR_SPIFLASH_CORE_MASTER_STATUS_RX_READY_OFFSET) & 1;
}
static void spiflash_master_write(uint32_t val, size_t len, size_t width, uint32_t mask)
{
/* Be sure to empty RX queue before doing Xfer. */
while (spiflash_core_master_status_rx_ready_read())
while (spiflash_rx_ready())
spiflash_core_master_rxtx_read();
/* Configure Master */
spiflash_core_master_phyconfig_len_write(8 * len);
spiflash_core_master_phyconfig_mask_write(mask);
spiflash_core_master_phyconfig_width_write(width);
spiflash_len_mask_width_write(8*len, width, mask);
/* Set CS. */
spiflash_core_master_cs_write(1);
/* Do Xfer. */
spiflash_core_master_rxtx_write(val);
while (!spiflash_core_master_status_rx_ready_read());
while (!spiflash_rx_ready());
/* Clear CS. */
spiflash_core_master_cs_write(0);
@ -102,21 +121,19 @@ static volatile uint8_t r_buf[SPI_FLASH_BLOCK_SIZE + 4];
static uint32_t transfer_byte(uint8_t b)
{
/* wait for tx ready */
while (!spiflash_core_master_status_tx_ready_read());
while (!spiflash_tx_ready());
spiflash_core_master_rxtx_write((uint32_t)b);
/* wait for rx ready */
while (!spiflash_core_master_status_rx_ready_read());
while (!spiflash_rx_ready());
return spiflash_core_master_rxtx_read();
}
static void transfer_cmd(volatile uint8_t *bs, volatile uint8_t *resp, int len)
{
spiflash_core_master_phyconfig_len_write(8);
spiflash_core_master_phyconfig_width_write(1);
spiflash_core_master_phyconfig_mask_write(1);
spiflash_len_mask_width_write(8, 1, 1);
spiflash_core_master_cs_write(1);
flush_cpu_dcache();