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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 | ||
5bf3df3f | 18 | #include <mach/regs-ost.h> |
97f927a4 | 19 | |
d997211e AB |
20 | /* restored July 2017, this did not build since 2011! */ |
21 | ||
22 | #define ICIP io_p2v(0x40d00000) | |
23 | #define ICMR io_p2v(0x40d00004) | |
24 | #define xip_irqpending() (readl(ICIP) & readl(ICMR)) | |
97f927a4 TG |
25 | |
26 | /* we sample OSCR and convert desired delta to usec (1/4 ~= 1000000/3686400) */ | |
d997211e AB |
27 | #define xip_currtime() readl(OSCR) |
28 | #define xip_elapsed_since(x) (signed)((readl(OSCR) - (x)) / 4) | |
97f927a4 TG |
29 | |
30 | /* | |
31 | * xip_cpu_idle() is used when waiting for a delay equal or larger than | |
32 | * the system timer tick period. This should put the CPU into idle mode | |
33 | * to save power and to be woken up only when some interrupts are pending. | |
34 | * As above, this should not rely upon standard kernel code. | |
35 | */ | |
36 | ||
37 | #define xip_cpu_idle() asm volatile ("mcr p14, 0, %0, c7, c0, 0" :: "r" (1)) | |
38 | ||
39 | #endif /* __ARCH_PXA_MTD_XIP_H__ */ |