include/debug/pl01x.S

0001 /* SPDX-License-Identifier: GPL-2.0-only */
0002 /* arch/arm/include/debug/pl01x.S
0003  *
0004  * Debugging macro include header
0005  *
0006  *  Copyright (C) 1994-1999 Russell King
0007  *  Moved from linux/arch/arm/kernel/debug.S by Ben Dooks
0008 */
0009 #include <linux/amba/serial.h>
0010
0011 #ifdef CONFIG_DEBUG_UART_PHYS
0012         .macro  addruart, rp, rv, tmp
0013         ldr \rp, =CONFIG_DEBUG_UART_PHYS
0014         ldr \rv, =CONFIG_DEBUG_UART_VIRT
0015         .endm
0016 #endif
0017
0018         .macro  senduart,rd,rx
0019         strb    \rd, [\rx, #UART01x_DR]
0020         .endm
0021
0022         .macro  waituartcts,rd,rx
0023         .endm
0024
0025         .macro  waituarttxrdy,rd,rx
0026 1001:       ldr \rd, [\rx, #UART01x_FR]
0027  ARM_BE8(   rev \rd, \rd )
0028         tst \rd, #UART01x_FR_TXFF
0029         bne 1001b
0030         .endm
0031
0032         .macro  busyuart,rd,rx
0033 1001:       ldr \rd, [\rx, #UART01x_FR]
0034  ARM_BE8(   rev \rd, \rd )
0035         tst \rd, #UART01x_FR_BUSY
0036         bne 1001b
0037         .endm