diff options
Diffstat (limited to 'bsps/arm/smdk2410/start/bspreset.c')
| -rw-r--r-- | bsps/arm/smdk2410/start/bspreset.c | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/bsps/arm/smdk2410/start/bspreset.c b/bsps/arm/smdk2410/start/bspreset.c new file mode 100644 index 0000000000..365a22f14f --- /dev/null +++ b/bsps/arm/smdk2410/start/bspreset.c @@ -0,0 +1,51 @@ +/* + * Copyright (c) 2002 by Jay Monkman <jtm@smoothsmoothie.com> + * + * The license and distribution terms for this file may be + * found in the file LICENSE in this distribution or at + * http://www.rtems.org/license/LICENSE. + */ + +#include <bsp.h> +#include <bsp/bootcard.h> + +void bsp_reset(void) +{ +#if ON_SKYEYE == 1 + #define SKYEYE_MAGIC_ADDRESS (*(volatile unsigned int *)(0xb0000000)) + + SKYEYE_MAGIC_ADDRESS = 0xff; +#else + /* TODO: This code was initially copied from the gp32 BSP. That BSP has + * been obsoleted and removed but this code may still benefit from being + * in a shared place. + */ + rtems_interrupt_level level; + + (void) level; + rtems_interrupt_disable(level); + /* disable mmu, invalide i-cache and call swi #4 */ + __asm__ volatile("" + "mrc p15,0,r0,c1,c0,0 \n" + "bic r0,r0,#1 \n" + "mcr p15,0,r0,c1,c0,0 \n" + "nop \n" + "nop \n" + "nop \n" + "nop \n" + "nop \n" + "mov r0,#0 \n" + "MCR p15,0,r0,c7,c5,0 \n" + "nop \n" + "nop \n" + "nop \n" + "nop \n" + "nop \n" + "swi #4 " + : + : + : "r0" + ); + /* we should be back in bios now */ +#endif +} |