| /* SPDX-License-Identifier: GPL-2.0-only */ |
| /* arch/arm/include/debug/pl01x.S |
| * |
| * Debugging macro include header |
| * |
| * Copyright (C) 1994-1999 Russell King |
| * Moved from linux/arch/arm/kernel/debug.S by Ben Dooks |
| */ |
| #include <linux/amba/serial.h> |
| |
| #ifdef CONFIG_DEBUG_ZTE_ZX |
| #undef UART01x_DR |
| #undef UART01x_FR |
| #define UART01x_DR 0x04 |
| #define UART01x_FR 0x14 |
| #endif |
| |
| #ifdef CONFIG_DEBUG_UART_PHYS |
| .macro addruart, rp, rv, tmp |
| ldr \rp, =CONFIG_DEBUG_UART_PHYS |
| ldr \rv, =CONFIG_DEBUG_UART_VIRT |
| .endm |
| #endif |
| |
| .macro senduart,rd,rx |
| strb \rd, [\rx, #UART01x_DR] |
| .endm |
| |
| .macro waituart,rd,rx |
| 1001: ldr \rd, [\rx, #UART01x_FR] |
| ARM_BE8( rev \rd, \rd ) |
| tst \rd, #UART01x_FR_TXFF |
| bne 1001b |
| .endm |
| |
| .macro busyuart,rd,rx |
| 1001: ldr \rd, [\rx, #UART01x_FR] |
| ARM_BE8( rev \rd, \rd ) |
| tst \rd, #UART01x_FR_BUSY |
| bne 1001b |
| .endm |
