diff options
Diffstat (limited to 'src/soc/intel/common/block')
| -rw-r--r-- | src/soc/intel/common/block/fast_spi/fast_spi_flash.c | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/src/soc/intel/common/block/fast_spi/fast_spi_flash.c b/src/soc/intel/common/block/fast_spi/fast_spi_flash.c index aead8debc9..269db634e0 100644 --- a/src/soc/intel/common/block/fast_spi/fast_spi_flash.c +++ b/src/soc/intel/common/block/fast_spi/fast_spi_flash.c @@ -129,11 +129,34 @@ static int wait_for_hwseq_xfer(struct fast_spi_flash_ctx *ctx, return E_TIMEOUT; } +static int wait_for_hwseq_spi_cycle_complete(struct fast_spi_flash_ctx *ctx) +{ + struct stopwatch sw; + uint32_t hsfsts; + + stopwatch_init_msecs_expire(&sw, SPIBAR_HWSEQ_XFER_TIMEOUT_MS); + do { + hsfsts = fast_spi_flash_ctrlr_reg_read(ctx, SPIBAR_HSFSTS_CTL); + + if (!(hsfsts & SPIBAR_HSFSTS_SCIP)) + return SUCCESS; + } while (!(stopwatch_expired(&sw))); + + return E_TIMEOUT; +} + /* Execute FAST_SPI flash transfer. This is a blocking call. */ static int exec_sync_hwseq_xfer(struct fast_spi_flash_ctx *ctx, uint32_t hsfsts_cycle, uint32_t flash_addr, size_t len) { + if (wait_for_hwseq_spi_cycle_complete(ctx) != SUCCESS) { + printk(BIOS_ERR, "SPI Transaction Timeout (Exceeded %d ms) due to prior" + " operation at Flash Offset %x\n", + SPIBAR_HWSEQ_XFER_TIMEOUT_MS, flash_addr); + return E_TIMEOUT; + } + start_hwseq_xfer(ctx, hsfsts_cycle, flash_addr, len); return wait_for_hwseq_xfer(ctx, flash_addr); } |