xref: /openbmc/linux/arch/xtensa/include/asm/platform.h (revision 7b73a9c8)
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 <linux/pci.h>
16 
17 #include <asm/bootparam.h>
18 
19 /*
20  * platform_init is called before the mmu is initialized to give the
21  * platform a early hook-up. bp_tag_t is a list of configuration tags
22  * passed from the boot-loader.
23  */
24 extern void platform_init(bp_tag_t*);
25 
26 /*
27  * platform_setup is called from setup_arch with a pointer to the command-line
28  * string.
29  */
30 extern void platform_setup (char **);
31 
32 /*
33  * platform_restart is called to restart the system.
34  */
35 extern void platform_restart (void);
36 
37 /*
38  * platform_halt is called to stop the system and halt.
39  */
40 extern void platform_halt (void);
41 
42 /*
43  * platform_power_off is called to stop the system and power it off.
44  */
45 extern void platform_power_off (void);
46 
47 /*
48  * platform_idle is called from the idle function.
49  */
50 extern void platform_idle (void);
51 
52 /*
53  * platform_heartbeat is called every HZ
54  */
55 extern void platform_heartbeat (void);
56 
57 /*
58  * platform_calibrate_ccount calibrates cpu clock freq (CONFIG_XTENSA_CALIBRATE)
59  */
60 extern void platform_calibrate_ccount (void);
61 
62 /*
63  * Flush and reset the mmu, simulate a processor reset, and
64  * jump to the reset vector.
65  */
66 void cpu_reset(void) __attribute__((noreturn));
67 
68 #endif	/* _XTENSA_PLATFORM_H */
69