projects / mirror_ubuntu-jammy-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| d2912cb1 | 1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
| c53c9cf6 | 2 | /* |
| abbfb21e | 3 | * arch/arm/include/debug/ks8695.S |
| c53c9cf6 AV |
4 | * |
| 5 | * Copyright (C) 2006 Ben Dooks <ben@simtec.co.uk> | |
| 6 | * Copyright (C) 2006 Simtec Electronics | |
| 7 | * | |
| 8 | * KS8695 - Debug macros | |
| c53c9cf6 AV |
9 | */ |
| 10 | ||
| abbfb21e DT |
11 | #define KS8695_UART_PA 0x03ffe000 |
| 12 | #define KS8695_UART_VA 0xf00fe000 | |
| 13 | #define KS8695_URTH (0x04) | |
| 14 | #define KS8695_URLS (0x14) | |
| 15 | #define URLS_URTE (1 << 6) | |
| 16 | #define URLS_URTHRE (1 << 5) | |
| c53c9cf6 | 17 | |
| 639da5ee | 18 | .macro addruart, rp, rv, tmp |
| 0ea12930 JK |
19 | ldr \rp, =KS8695_UART_PA @ physical base address |
| 20 | ldr \rv, =KS8695_UART_VA @ virtual base address | |
| c53c9cf6 AV |
21 | .endm |
| 22 | ||
| 23 | .macro senduart, rd, rx | |
| 24 | str \rd, [\rx, #KS8695_URTH] @ Write to Transmit Holding Register | |
| 25 | .endm | |
| 26 | ||
| 27 | .macro busyuart, rd, rx | |
| 28 | 1001: ldr \rd, [\rx, #KS8695_URLS] @ Read Line Status Register | |
| 29 | tst \rd, #URLS_URTE @ Holding & Shift registers empty? | |
| 30 | beq 1001b | |
| 31 | .endm | |
| 32 | ||
| 33 | .macro waituart, rd, rx | |
| 34 | 1001: ldr \rd, [\rx, #KS8695_URLS] @ Read Line Status Register | |
| 35 | tst \rd, #URLS_URTHRE @ Holding Register empty? | |
| 36 | beq 1001b | |
| 37 | .endm |