| /* SPDX-License-Identifier: GPL-2.0-only */ | |
| /* | |
| * arch/arm/include/debug/sti.S | |
| * | |
| * Debugging macro include header | |
| * Copyright (C) 2013 STMicroelectronics (R&D) Limited. | |
| */ | |
| #define ASC_TX_BUF_OFF 0x04 | |
| #define ASC_CTRL_OFF 0x0c | |
| #define ASC_STA_OFF 0x14 | |
| #define ASC_STA_TX_FULL (1<<9) | |
| #define ASC_STA_TX_EMPTY (1<<1) | |
| .macro addruart, rp, rv, tmp | |
| ldr \rp, =CONFIG_DEBUG_UART_PHYS @ physical base | |
| ldr \rv, =CONFIG_DEBUG_UART_VIRT @ virt base | |
| .endm | |
| .macro senduart,rd,rx | |
| strb \rd, [\rx, #ASC_TX_BUF_OFF] | |
| .endm | |
| .macro waituartcts,rd,rx | |
| .endm | |
| .macro waituarttxrdy,rd,rx | |
| 1001: ldr \rd, [\rx, #ASC_STA_OFF] | |
| tst \rd, #ASC_STA_TX_FULL | |
| bne 1001b | |
| .endm | |
| .macro busyuart,rd,rx | |
| 1001: ldr \rd, [\rx, #ASC_STA_OFF] | |
| tst \rd, #ASC_STA_TX_EMPTY | |
| beq 1001b | |
| .endm |