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imx: add necessary lpuart console_flush callback for debug 

Current lpuart driver does NOT implement .console_flush callback,
if debug console is enabled, the console_flush() will call the
undefined .console_flush callback(NULL) for lpuart and leak to
panic, this patch adds .console_flush callback to make lpuart work
for debug mode.

Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
This commit is contained in:
Anson Huang 2019-01-15 13:53:03 +08:00
parent 63b9b5425f
commit f1ac79642e
1 changed files with 8 additions and 2 deletions
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10
plat/imx/common/lpuart_console.S
View File

@ -1,5 +1,5 @@
/*
* Copyright (c) 2015-2018, ARM Limited and Contributors. All rights reserved.
* Copyright (c) 2015-2019, ARM Limited and Contributors. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
@ -15,6 +15,7 @@
.globl console_lpuart_init
.globl console_lpuart_putc
.globl console_lpuart_getc
.globl console_lpuart_flush
func console_lpuart_register
mov x7, x30
@ -27,7 +28,7 @@ func console_lpuart_register
mov x0, x6
mov x30, x7
finish_console_register lpuart putc=1, getc=1
finish_console_register lpuart putc=1, getc=1, flush=1
register_fail:
ret x7
@ -70,3 +71,8 @@ getc_error:
mov w0, #-1
ret
endfunc console_lpuart_getc
func console_lpuart_flush
mov x0, #0
ret
endfunc console_lpuart_flush