1 /* 2 * Platform specific functions 3 * 4 * This file is subject to the terms and conditions of the GNU General 5 * Public License. See the file "COPYING" in the main directory of 6 * this archive for more details. 7 * 8 * Copyright (C) 2001 - 2005 Tensilica Inc. 9 */ 10 11 #ifndef _XTENSA_PLATFORM_H 12 #define _XTENSA_PLATFORM_H 13 14 #include <linux/types.h> 15 #include <asm/bootparam.h> 16 17 /* 18 * platform_init is called before the mmu is initialized to give the 19 * platform a early hook-up. bp_tag_t is a list of configuration tags 20 * passed from the boot-loader. 21 */ 22 extern void platform_init(bp_tag_t*); 23 24 /* 25 * platform_setup is called from setup_arch with a pointer to the command-line 26 * string. 27 */ 28 extern void platform_setup (char **); 29 30 /* 31 * platform_halt is called to stop the system and halt. 32 */ 33 extern void platform_halt (void); 34 35 /* 36 * platform_power_off is called to stop the system and power it off. 37 */ 38 extern void platform_power_off (void); 39 40 /* 41 * platform_idle is called from the idle function. 42 */ 43 extern void platform_idle (void); 44 45 /* 46 * platform_calibrate_ccount calibrates cpu clock freq (CONFIG_XTENSA_CALIBRATE) 47 */ 48 extern void platform_calibrate_ccount (void); 49 50 /* 51 * Flush and reset the mmu, simulate a processor reset, and 52 * jump to the reset vector. 53 */ 54 void cpu_reset(void) __attribute__((noreturn)); 55 56 #endif /* _XTENSA_PLATFORM_H */ 57