[coreboot-gerrit] Change in ...coreboot[master]: libpayload: remove re-initialization of uart in libpayload

[Nitheesh Sekar (Code Review)]

Nitheesh Sekar has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/33424

Change subject: libpayload: remove re-initialization of uart in libpayload
......................................................................

libpayload: remove re-initialization of uart in libpayload

Depend on the coreboot for initialization of UART instead of
re-initialising in libpayload.

Change-Id: I7820bd7afd2e5f81e21a43f330ed42d3a732d577
Signed-off-by: Prudhvi Yarlagadda 
---
M payloads/libpayload/drivers/serial/qcs405.c
1 file changed, 4 insertions(+), 2 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/24/33424/1

diff --git a/payloads/libpayload/drivers/serial/qcs405.c b/payloads/libpayload/drivers/serial/qcs405.c
index 9f02e17..7a80aae 100644
--- a/payloads/libpayload/drivers/serial/qcs405.c
+++ b/payloads/libpayload/drivers/serial/qcs405.c
@@ -547,8 +547,10 @@

uart_board_param.uart_dm_base = (void *)(uintptr_t)sc_ptr->baseaddr;

-	/* TODO: We should rely on coreboot init. */
-	msm_boot_uart_dm_init(uart_board_param.uart_dm_base);
+	/* We should re-initialise uart rx as it gets reset in coreboot. */
+	write32(MSM_BOOT_UART_DM_IMR(uart_board_param.uart_dm_base),
+		MSM_BOOT_UART_DM_IMR_ENABLED);
+	msm_boot_uart_dm_init_rx_transfer(uart_board_param.uart_dm_base);

console_add_output_driver(&consout);
    console_add_input_driver(&consin);