[coreboot-gerrit] Change in coreboot[master]: sc7280: HACK PATCH: To support SPI-NOR driver for Rumi

[Ravi kumar (Code Review)]

Ravi kumar has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/47079 )

Change subject: sc7280: HACK PATCH: To support SPI-NOR driver for Rumi
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sc7280: HACK PATCH: To support SPI-NOR driver for Rumi

- In Rumi, GPIO emulation is not present and CS assert/deassert
  is done through controller
- In soc, CS assert/deassert is done using GPIO
- Disable SBL_EN bit in QSPI master config register

Change-Id: I2a53c1094b90ac7896e835864848467c52d2a03e
Signed-off-by: Roja Rani Yarubandi 
---
M src/soc/qualcomm/sc7280/qspi.c
1 file changed, 10 insertions(+), 5 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/79/47079/1

diff --git a/src/soc/qualcomm/sc7280/qspi.c b/src/soc/qualcomm/sc7280/qspi.c
index 3c627a5..fba8f89 100644
--- a/src/soc/qualcomm/sc7280/qspi.c
+++ b/src/soc/qualcomm/sc7280/qspi.c
@@ -123,15 +123,17 @@
     * So to support read transfers that are not preceded by write, set
     * transfer fragment bit = 1
     */
-	next->fragment = 1;
+	next->fragment = 0;
    next->reserved2 = 0;
    next->length = 0;
    next->bounce_src = 0;
    next->bounce_dst = 0;
    next->bounce_length = 0;

-	if (current)
+	if (current) {
    	current->next_descriptor = (uint32_t)(uintptr_t) next;
+		current->fragment = 1;
+	}

return next;
 }
@@ -169,6 +171,7 @@
    ptr = (void *)(uintptr_t) desc->data_address;

if (write) {
+		desc->fragment = 1;
    	memcpy(ptr, data, data_bytes);
    } else {
    	desc->bounce_src = (uint32_t)(uintptr_t) ptr;
@@ -190,10 +193,12 @@
    desc->data_address = (uint32_t)(uintptr_t) data;
    desc->length = data_bytes;

-	if (write)
+	if (write) {
+		desc->fragment = 1;
    	dcache_clean_by_mva(data, data_bytes);
-	else
+	} else {
    	dcache_invalidate_by_mva(data, data_bytes);
+	}
 }

static void queue_data(uint8_t *data, uint32_t data_bytes,
@@ -235,7 +240,7 @@
    tx_data_delay = 0;

mstr_config = (tx_data_oe_delay << TX_DATA_OE_DELAY_SHIFT) |
-		(tx_data_delay << TX_DATA_DELAY_SHIFT) | (SBL_EN) |
+		(tx_data_delay << TX_DATA_DELAY_SHIFT) |
    	(spi_mode << SPI_MODE_SHIFT) |
    	(PIN_HOLDN) |
    	(FB_CLK_EN) |