andrius
/
arm-trusted-firmware
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

Tegra: spe: prepend '\r' to '\n' 

This patch udpates the SPE console driver to prepend '\r' to
'\n'. This fixes the alignment of prints seen by the host
machines on their UART ports.

Tested by collecting the logs from host PC using Cutecom

Reported by: Mustafa Bilgen <mbilgen@nvidia.com>

Change-Id: I6e0b412bd71ff5eb889582071df8c157da5175ed
Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>
This commit is contained in:
Varun Wadekar 2018-05-07 11:21:57 -07:00
parent 07faf4d8c5
commit 843d0aad80
1 changed files with 17 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

18
plat/nvidia/tegra/common/drivers/spe/shared_console.S
View File

@ -1,5 +1,5 @@
/*
* Copyright (c) 2017, ARM Limited and Contributors. All rights reserved.
* Copyright (c) 2017-2018, ARM Limited and Contributors. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
@ -63,11 +63,27 @@ func console_core_putc
/* Check the input parameter */
cbz x1, putc_error
/* Prepend '\r' to '\n' */
cmp w0, #0xA
b.ne 2f
/* wait until spe is ready */
1: ldr w2, [x1]
and w2, w2, #CONSOLE_IS_BUSY
cbnz w2, 1b
/* spe is ready */
mov w2, #0xD /* '\r' */
and w2, w2, #0xFF
mov w3, #(CONSOLE_WRITE | (1 << CONSOLE_NUM_BYTES_SHIFT))
orr w2, w2, w3
str w2, [x1]
/* wait until spe is ready */
2: ldr w2, [x1]
and w2, w2, #CONSOLE_IS_BUSY
cbnz w2, 2b
/* spe is ready */
mov w2, w0
and w2, w2, #0xFF