1/* arch/arm/mach-imx/include/mach/debug-macro.S 2 * 3 * Debugging macro include header 4 * 5 * Copyright (C) 1994-1999 Russell King 6 * Moved from linux/arch/arm/kernel/debug.S by Ben Dooks 7 * 8 * This program is free software; you can redistribute it and/or modify 9 * it under the terms of the GNU General Public License version 2 as 10 * published by the Free Software Foundation. 11 * 12 */ 13#ifdef CONFIG_DEBUG_IMX1_UART 14#define UART_PADDR 0x00206000 15#elif defined (CONFIG_DEBUG_IMX25_UART) 16#define UART_PADDR 0x43f90000 17#elif defined (CONFIG_DEBUG_IMX21_IMX27_UART) 18#define UART_PADDR 0x1000a000 19#elif defined (CONFIG_DEBUG_IMX31_IMX35_UART) 20#define UART_PADDR 0x43f90000 21#elif defined (CONFIG_DEBUG_IMX51_UART) 22#define UART_PADDR 0x73fbc000 23#elif defined (CONFIG_DEBUG_IMX50_IMX53_UART) 24#define UART_PADDR 0x53fbc000 25#elif defined (CONFIG_DEBUG_IMX6Q_UART2) 26#define UART_PADDR 0x021e8000 27#elif defined (CONFIG_DEBUG_IMX6Q_UART4) 28#define UART_PADDR 0x021f0000 29#endif 30 31/* 32 * FIXME: This is a copy of IMX_IO_P2V in hardware.h, and needs to 33 * stay sync with that. It's hard to maintain, and should be fixed 34 * globally for multi-platform build to use a fixed virtual address 35 * for low-level debug uart port across platforms. 36 */ 37#define IMX_IO_P2V(x) ( \ 38 (((x) & 0x80000000) >> 7) | \ 39 (0xf4000000 + \ 40 (((x) & 0x50000000) >> 6) + \ 41 (((x) & 0x0b000000) >> 4) + \ 42 (((x) & 0x000fffff)))) 43 44#define UART_VADDR IMX_IO_P2V(UART_PADDR) 45 46 .macro addruart, rp, rv, tmp 47 ldr \rp, =UART_PADDR @ physical 48 ldr \rv, =UART_VADDR @ virtual 49 .endm 50 51 .macro senduart,rd,rx 52 str \rd, [\rx, #0x40] @ TXDATA 53 .endm 54 55 .macro waituart,rd,rx 56 .endm 57 58 .macro busyuart,rd,rx 591002: ldr \rd, [\rx, #0x98] @ SR2 60 tst \rd, #1 << 3 @ TXDC 61 beq 1002b @ wait until transmit done 62 .endm 63