projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| 97f927a4 TG |
1 | /* |
| 2 | * MTD primitives for XIP support. Architecture specific functions | |
| 3 | * | |
| 4 | * Do not include this file directly. It's included from linux/mtd/xip.h | |
| 5 | * | |
| 6 | * Author: Nicolas Pitre | |
| 7 | * Created: Nov 2, 2004 | |
| 8 | * Copyright: (C) 2004 MontaVista Software, Inc. | |
| 9 | * | |
| 10 | * This program is free software; you can redistribute it and/or modify | |
| 11 | * it under the terms of the GNU General Public License version 2 as | |
| 12 | * published by the Free Software Foundation. | |
| 97f927a4 TG |
13 | */ |
| 14 | ||
| 15 | #ifndef __ARCH_PXA_MTD_XIP_H__ | |
| 16 | #define __ARCH_PXA_MTD_XIP_H__ | |
| 17 | ||
| a09e64fb | 18 | #include <mach/pxa-regs.h> |
| 97f927a4 TG |
19 | |
| 20 | #define xip_irqpending() (ICIP & ICMR) | |
| 21 | ||
| 22 | /* we sample OSCR and convert desired delta to usec (1/4 ~= 1000000/3686400) */ | |
| 23 | #define xip_currtime() (OSCR) | |
| 24 | #define xip_elapsed_since(x) (signed)((OSCR - (x)) / 4) | |
| 25 | ||
| 26 | /* | |
| 27 | * xip_cpu_idle() is used when waiting for a delay equal or larger than | |
| 28 | * the system timer tick period. This should put the CPU into idle mode | |
| 29 | * to save power and to be woken up only when some interrupts are pending. | |
| 30 | * As above, this should not rely upon standard kernel code. | |
| 31 | */ | |
| 32 | ||
| 33 | #define xip_cpu_idle() asm volatile ("mcr p14, 0, %0, c7, c0, 0" :: "r" (1)) | |
| 34 | ||
| 35 | #endif /* __ARCH_PXA_MTD_XIP_H__ */ |