projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| a09e64fb | 1 | /* arch/arm/mach-imx/include/mach/debug-macro.S |
| 4bc25650 SH |
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 | */ | |
| 49c9e60e | 13 | |
| f8c95fe6 | 14 | #include "imx-uart.h" |
| d9c92783 | 15 | |
| 6dde5ac5 SG |
16 | /* |
| 17 | * FIXME: This is a copy of IMX_IO_P2V in hardware.h, and needs to | |
| 18 | * stay sync with that. It's hard to maintain, and should be fixed | |
| 19 | * globally for multi-platform build to use a fixed virtual address | |
| 20 | * for low-level debug uart port across platforms. | |
| 21 | */ | |
| 22 | #define IMX_IO_P2V(x) ( \ | |
| 23 | (((x) & 0x80000000) >> 7) | \ | |
| 24 | (0xf4000000 + \ | |
| 25 | (((x) & 0x50000000) >> 6) + \ | |
| 26 | (((x) & 0x0b000000) >> 4) + \ | |
| 27 | (((x) & 0x000fffff)))) | |
| 28 | ||
| 29 | #define UART_VADDR IMX_IO_P2V(UART_PADDR) | |
| ac401427 | 30 | |
| 639da5ee | 31 | .macro addruart, rp, rv, tmp |
| 0ea12930 JK |
32 | ldr \rp, =UART_PADDR @ physical |
| 33 | ldr \rv, =UART_VADDR @ virtual | |
| 4bc25650 SH |
34 | .endm |
| 35 | ||
| 36 | .macro senduart,rd,rx | |
| 37 | str \rd, [\rx, #0x40] @ TXDATA | |
| 38 | .endm | |
| 39 | ||
| 40 | .macro waituart,rd,rx | |
| 41 | .endm | |
| 42 | ||
| 43 | .macro busyuart,rd,rx | |
| 44 | 1002: ldr \rd, [\rx, #0x98] @ SR2 | |
| 45 | tst \rd, #1 << 3 @ TXDC | |
| 46 | beq 1002b @ wait until transmit done | |
| 47 | .endm |