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/*
* linux/include/asm-arm/arch-sa1100/system.h
*
* Copyright (c) 1999 Nicolas Pitre <nico@visuaide.com>
*/
#include <linux/config.h>
#ifdef CONFIG_SA1100_VICTOR
#define arch_reset( x ) { \
/* switch off power supply */ \
mdelay(2000); \
GPCR = GPIO_GPIO23; \
while(1); \
}
#else
#define arch_reset(x) { \
__asm__ volatile ( \
" mcr p15, 0, %0, c1, c0 @ MMU off\n" \
" mov pc, #0\n" : : "r" (cpu_reset()) : "cc"); \
}
#endif
/* Enter SA1100 idle mode (see data sheet sec 9.5).
* It seems that the wait-on-interrupt just hang the CPU forever if it's
* on the end of a cache line. Workaround: we force an explicit alignment
* before it.
*/
#define arch_do_idle() \
do { \
__asm__ __volatile__( \
" mcr p15, 0, %0, c15, c2, 2 @ Disable clock switching \n" \
" ldr %0, [%0] @ Must perform a non-cached access \n" \
" b 1f @ Seems we must align the next \n" \
" .align 5 @ instruction on a cache line \n" \
"1: mcr p15, 0, %0, c15, c8, 2 @ Wait for interrupts \n" \
" mcr p15, 0, %0, c15, c1, 2 @ Reenable clock switching \n" \
: : "r" (&ICIP) : "cc" ); \
} while (0)
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