| /* SPDX-License-Identifier: GPL-2.0 */ |
| /* |
| * Renesas SCIF(A) debugging macro include header |
| * |
| * Based on r8a7790.S |
| * |
| * Copyright (C) 2012-2013 Renesas Electronics Corporation |
| * Copyright (C) 1994-1999 Russell King |
| */ |
| |
| #define SCIF_PHYS CONFIG_DEBUG_UART_PHYS |
| #define SCIF_VIRT ((SCIF_PHYS & 0x00ffffff) | 0xfd000000) |
| |
| #if CONFIG_DEBUG_UART_PHYS < 0xe6e00000 |
| /* SCIFA */ |
| #define FTDR 0x20 |
| #define FSR 0x14 |
| #else |
| /* SCIF */ |
| #define FTDR 0x0c |
| #define FSR 0x10 |
| #endif |
| |
| #define TDFE (1 << 5) |
| #define TEND (1 << 6) |
| |
| .macro addruart, rp, rv, tmp |
| ldr \rp, =SCIF_PHYS |
| ldr \rv, =SCIF_VIRT |
| .endm |
| |
| .macro waituart, rd, rx |
| 1001: ldrh \rd, [\rx, #FSR] |
| tst \rd, #TDFE |
| beq 1001b |
| .endm |
| |
| .macro senduart, rd, rx |
| strb \rd, [\rx, #FTDR] |
| ldrh \rd, [\rx, #FSR] |
| bic \rd, \rd, #TEND |
| strh \rd, [\rx, #FSR] |
| .endm |
| |
| .macro busyuart, rd, rx |
| 1001: ldrh \rd, [\rx, #FSR] |
| tst \rd, #TEND |
| beq 1001b |
| .endm |
