mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-09-29 22:02:02 +00:00
9ca4efec0a
Update the sti platform LL_UART support to rely on CONFIG_DEBUG_UART_PHYS and CONFIG_DEBUG_UART_VIRT from Kconfig Signed-off-by: Alain Volmat <avolmat@me.com> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
39 lines
1,022 B
ArmAsm
39 lines
1,022 B
ArmAsm
/* SPDX-License-Identifier: GPL-2.0-only */
|
|
/*
|
|
* arch/arm/include/debug/sti.S
|
|
*
|
|
* Debugging macro include header
|
|
* Copyright (C) 2013 STMicroelectronics (R&D) Limited.
|
|
*/
|
|
|
|
#define ASC_TX_BUF_OFF 0x04
|
|
#define ASC_CTRL_OFF 0x0c
|
|
#define ASC_STA_OFF 0x14
|
|
|
|
#define ASC_STA_TX_FULL (1<<9)
|
|
#define ASC_STA_TX_EMPTY (1<<1)
|
|
|
|
|
|
.macro addruart, rp, rv, tmp
|
|
ldr \rp, =CONFIG_DEBUG_UART_PHYS @ physical base
|
|
ldr \rv, =CONFIG_DEBUG_UART_VIRT @ virt base
|
|
.endm
|
|
|
|
.macro senduart,rd,rx
|
|
strb \rd, [\rx, #ASC_TX_BUF_OFF]
|
|
.endm
|
|
|
|
.macro waituartcts,rd,rx
|
|
.endm
|
|
|
|
.macro waituarttxrdy,rd,rx
|
|
1001: ldr \rd, [\rx, #ASC_STA_OFF]
|
|
tst \rd, #ASC_STA_TX_FULL
|
|
bne 1001b
|
|
.endm
|
|
|
|
.macro busyuart,rd,rx
|
|
1001: ldr \rd, [\rx, #ASC_STA_OFF]
|
|
tst \rd, #ASC_STA_TX_EMPTY
|
|
beq 1001b
|
|
.endm
|