projects / thirdparty / kernel / stable.git / blame
| Commit | Line | Data |
|---|---|---|
| d2912cb1 | 1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
| 5026aecf SK |
2 | /* |
| 3 | * arch/arm/include/debug/sti.S | |
| 4 | * | |
| 5 | * Debugging macro include header | |
| 6 | * Copyright (C) 2013 STMicroelectronics (R&D) Limited. | |
| 5026aecf SK |
7 | */ |
| 8 | ||
| 5026aecf SK |
9 | #define ASC_TX_BUF_OFF 0x04 |
| 10 | #define ASC_CTRL_OFF 0x0c | |
| 11 | #define ASC_STA_OFF 0x14 | |
| 12 | ||
| 13 | #define ASC_STA_TX_FULL (1<<9) | |
| 14 | #define ASC_STA_TX_EMPTY (1<<1) | |
| 15 | ||
| 16 | ||
| 17 | .macro addruart, rp, rv, tmp | |
| 9ca4efec AV |
18 | ldr \rp, =CONFIG_DEBUG_UART_PHYS @ physical base |
| 19 | ldr \rv, =CONFIG_DEBUG_UART_VIRT @ virt base | |
| 5026aecf SK |
20 | .endm |
| 21 | ||
| 22 | .macro senduart,rd,rx | |
| 23 | strb \rd, [\rx, #ASC_TX_BUF_OFF] | |
| 24 | .endm | |
| 25 | ||
| 2c50a570 LW |
26 | .macro waituartcts,rd,rx |
| 27 | .endm | |
| 28 | ||
| 29 | .macro waituarttxrdy,rd,rx | |
| 5026aecf SK |
30 | 1001: ldr \rd, [\rx, #ASC_STA_OFF] |
| 31 | tst \rd, #ASC_STA_TX_FULL | |
| 32 | bne 1001b | |
| 33 | .endm | |
| 34 | ||
| 35 | .macro busyuart,rd,rx | |
| 36 | 1001: ldr \rd, [\rx, #ASC_STA_OFF] | |
| 37 | tst \rd, #ASC_STA_TX_EMPTY | |
| 38 | beq 1001b | |
| 39 | .endm |