| Stefan Reinauer | 8af0d03 | 2012-12-14 13:05:21 -0800 | [diff] [blame] | 1 | /* |
| Julius Werner | d65e214 | 2013-12-13 12:59:57 -0800 | [diff] [blame] | 2 | * arch/arm/asmlib.h |
| 3 | * |
| 4 | * Adapted from Linux arch/arm/include/assembler.h |
| Stefan Reinauer | 8af0d03 | 2012-12-14 13:05:21 -0800 | [diff] [blame] | 5 | * |
| 6 | * Copyright (C) 1996-2000 Russell King |
| 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 | * |
| Martin Roth | 4af5886 | 2016-01-21 13:15:16 -0700 | [diff] [blame] | 12 | * This program is distributed in the hope that it will be useful, |
| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | * GNU General Public License for more details. |
| 16 | * |
| Stefan Reinauer | 8af0d03 | 2012-12-14 13:05:21 -0800 | [diff] [blame] | 17 | * This file contains arm architecture specific defines |
| 18 | * for the different processors. |
| 19 | * |
| 20 | * Do not include any C declarations in this file - it is included by |
| 21 | * assembler source. |
| 22 | */ |
| 23 | |
| 24 | /* |
| Julius Werner | d65e214 | 2013-12-13 12:59:57 -0800 | [diff] [blame] | 25 | * WARNING: This file is *only* meant for memcpy.S and friends which were copied |
| 26 | * from Linux and require some weird macros. It does unspeakable things like |
| 27 | * redefining "push", so do *not* try to turn it into a general assembly macro |
| 28 | * file, and keep it out of global include directories. |
| 29 | */ |
| 30 | |
| 31 | #ifndef __ARM_ASMLIB_H__ |
| 32 | #define __ARM_ASMLIB_H__ |
| 33 | |
| 34 | /* |
| Stefan Reinauer | 8af0d03 | 2012-12-14 13:05:21 -0800 | [diff] [blame] | 35 | * Endian independent macros for shifting bytes within registers. |
| 36 | */ |
| 37 | #ifndef __ARMEB__ |
| 38 | #define pull lsr |
| 39 | #define push lsl |
| 40 | #define get_byte_0 lsl #0 |
| 41 | #define get_byte_1 lsr #8 |
| 42 | #define get_byte_2 lsr #16 |
| 43 | #define get_byte_3 lsr #24 |
| 44 | #define put_byte_0 lsl #0 |
| 45 | #define put_byte_1 lsl #8 |
| 46 | #define put_byte_2 lsl #16 |
| 47 | #define put_byte_3 lsl #24 |
| 48 | #else |
| 49 | #define pull lsl |
| 50 | #define push lsr |
| 51 | #define get_byte_0 lsr #24 |
| 52 | #define get_byte_1 lsr #16 |
| 53 | #define get_byte_2 lsr #8 |
| 54 | #define get_byte_3 lsl #0 |
| 55 | #define put_byte_0 lsl #24 |
| 56 | #define put_byte_1 lsl #16 |
| 57 | #define put_byte_2 lsl #8 |
| 58 | #define put_byte_3 lsl #0 |
| 59 | #endif |
| 60 | |
| 61 | /* |
| 62 | * Data preload for architectures that support it |
| 63 | */ |
| Julius Werner | d65e214 | 2013-12-13 12:59:57 -0800 | [diff] [blame] | 64 | #if __COREBOOT_ARM_ARCH__ >= 5 |
| Stefan Reinauer | 8af0d03 | 2012-12-14 13:05:21 -0800 | [diff] [blame] | 65 | #define PLD(code...) code |
| 66 | #else |
| 67 | #define PLD(code...) |
| 68 | #endif |
| 69 | |
| 70 | /* |
| Julius Werner | d65e214 | 2013-12-13 12:59:57 -0800 | [diff] [blame] | 71 | * This can be used to enable code to cacheline align the destination |
| 72 | * pointer when bulk writing to memory. Linux doesn't enable this except |
| 73 | * for the "Feroceon" processor, so we better just leave it out. |
| Stefan Reinauer | 8af0d03 | 2012-12-14 13:05:21 -0800 | [diff] [blame] | 74 | */ |
| Julius Werner | d65e214 | 2013-12-13 12:59:57 -0800 | [diff] [blame] | 75 | #define CALGN(code...) |
| 76 | |
| Martin Roth | fd277d8 | 2016-01-11 12:47:30 -0700 | [diff] [blame] | 77 | #endif /* __ARM_ASMLIB_H__ */ |