ia64/linux-2.6.18-xen.hg

view include/asm-arm/arch-omap/mtd-xip.h @ 452:c7ed6fe5dca0

kexec: dont initialise regions in reserve_memory()

There is no need to initialise efi_memmap_res and boot_param_res in
reserve_memory() for the initial xen domain as it is done in
machine_kexec_setup_resources() using values from the kexec hypercall.

Signed-off-by: Simon Horman <horms@verge.net.au>
author Keir Fraser <keir.fraser@citrix.com>
date Thu Feb 28 10:55:18 2008 +0000 (2008-02-28)
parents 831230e53067
children
line source
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: Vladimir Barinov <vbarinov@ru.mvista.com>
7 *
8 * (c) 2005 MontaVista Software, Inc. This file is licensed under the
9 * terms of the GNU General Public License version 2. This program is
10 * licensed "as is" without any warranty of any kind, whether express or
11 * implied.
12 */
14 #ifndef __ARCH_OMAP_MTD_XIP_H__
15 #define __ARCH_OMAP_MTD_XIP_H__
17 #include <asm/hardware.h>
18 #define OMAP_MPU_TIMER_BASE (0xfffec500)
19 #define OMAP_MPU_TIMER_OFFSET 0x100
21 typedef struct {
22 u32 cntl; /* CNTL_TIMER, R/W */
23 u32 load_tim; /* LOAD_TIM, W */
24 u32 read_tim; /* READ_TIM, R */
25 } xip_omap_mpu_timer_regs_t;
27 #define xip_omap_mpu_timer_base(n) \
28 ((volatile xip_omap_mpu_timer_regs_t*)IO_ADDRESS(OMAP_MPU_TIMER_BASE + \
29 (n)*OMAP_MPU_TIMER_OFFSET))
31 static inline unsigned long xip_omap_mpu_timer_read(int nr)
32 {
33 volatile xip_omap_mpu_timer_regs_t* timer = xip_omap_mpu_timer_base(nr);
34 return timer->read_tim;
35 }
37 #define xip_irqpending() \
38 (omap_readl(OMAP_IH1_ITR) & ~omap_readl(OMAP_IH1_MIR))
39 #define xip_currtime() (~xip_omap_mpu_timer_read(0))
41 /*
42 * It's permitted to do approxmation for xip_elapsed_since macro
43 * (see linux/mtd/xip.h)
44 */
46 #ifdef CONFIG_MACH_OMAP_PERSEUS2
47 #define xip_elapsed_since(x) (signed)((~xip_omap_mpu_timer_read(0) - (x)) / 7)
48 #else
49 #define xip_elapsed_since(x) (signed)((~xip_omap_mpu_timer_read(0) - (x)) / 6)
50 #endif
52 /*
53 * xip_cpu_idle() is used when waiting for a delay equal or larger than
54 * the system timer tick period. This should put the CPU into idle mode
55 * to save power and to be woken up only when some interrupts are pending.
56 * As above, this should not rely upon standard kernel code.
57 */
59 #define xip_cpu_idle() asm volatile ("mcr p15, 0, %0, c7, c0, 4" :: "r" (1))
61 #endif /* __ARCH_OMAP_MTD_XIP_H__ */