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- /* SPDX-License-Identifier: GPL-2.0-only */
- /* arch/arm/mach-imx/include/mach/debug-macro.S
- *
- * Debugging macro include header
- *
- * Copyright (C) 1994-1999 Russell King
- * Moved from linux/arch/arm/kernel/debug.S by Ben Dooks
- */
- #include <asm/assembler.h>
- #include "imx-uart.h"
- /*
- * FIXME: This is a copy of IMX_IO_P2V in hardware.h, and needs to
- * stay sync with that. It's hard to maintain, and should be fixed
- * globally for multi-platform build to use a fixed virtual address
- * for low-level debug uart port across platforms.
- */
- #define IMX_IO_P2V(x) ( \
- (((x) & 0x80000000) >> 7) | \
- (0xf4000000 + \
- (((x) & 0x50000000) >> 6) + \
- (((x) & 0x0b000000) >> 4) + \
- (((x) & 0x000fffff))))
- #define UART_VADDR IMX_IO_P2V(UART_PADDR)
- .macro addruart, rp, rv, tmp
- ldr \rp, =UART_PADDR @ physical
- ldr \rv, =UART_VADDR @ virtual
- .endm
- .macro senduart,rd,rx
- ARM_BE8(rev \rd, \rd)
- str \rd, [\rx, #0x40] @ TXDATA
- .endm
- .macro waituartcts,rd,rx
- .endm
- .macro waituarttxrdy,rd,rx
- .endm
- .macro busyuart,rd,rx
- 1002: ldr \rd, [\rx, #0x98] @ SR2
- ARM_BE8(rev \rd, \rd)
- tst \rd, #1 << 3 @ TXDC
- beq 1002b @ wait until transmit done
- .endm
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