diff options
Diffstat (limited to '')
| -rw-r--r-- | arch/arm/include/debug/bcm63xx.S | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/arch/arm/include/debug/bcm63xx.S b/arch/arm/include/debug/bcm63xx.S new file mode 100644 index 000000000..da65abb67 --- /dev/null +++ b/arch/arm/include/debug/bcm63xx.S @@ -0,0 +1,33 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Broadcom BCM63xx low-level UART debug + * + * Copyright (C) 2014 Broadcom Corporation + */ + +#include <linux/serial_bcm63xx.h> + + .macro addruart, rp, rv, tmp + ldr \rp, =CONFIG_DEBUG_UART_PHYS + ldr \rv, =CONFIG_DEBUG_UART_VIRT + .endm + + .macro senduart, rd, rx + /* word access do not work */ + strb \rd, [\rx, #UART_FIFO_REG] + .endm + + .macro waituarttxrdy, rd, rx +1001: ldr \rd, [\rx, #UART_IR_REG] + tst \rd, #(1 << UART_IR_TXEMPTY) + beq 1001b + .endm + + .macro waituartcts, rd, rx + .endm + + .macro busyuart, rd, rx +1002: ldr \rd, [\rx, #UART_IR_REG] + tst \rd, #(1 << UART_IR_TXTRESH) + beq 1002b + .endm |