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cpu.h revision 1.18 
      1 /*	$NetBSD: cpu.h,v 1.18 2011/06/18 17:06:52 matt Exp $	*/
      2 
      3 /*
      4  * Copyright 2002 Wasabi Systems, Inc.
      5  * All rights reserved.
      6  *
      7  * Written by Eduardo Horvath for Wasabi Systems, Inc.
      8  *
      9  * Redistribution and use in source and binary forms, with or without
     10  * modification, are permitted provided that the following conditions
     11  * are met:
     12  * 1. Redistributions of source code must retain the above copyright
     13  *    notice, this list of conditions and the following disclaimer.
     14  * 2. Redistributions in binary form must reproduce the above copyright
     15  *    notice, this list of conditions and the following disclaimer in the
     16  *    documentation and/or other materials provided with the distribution.
     17  * 3. All advertising materials mentioning features or use of this software
     18  *    must display the following acknowledgement:
     19  *      This product includes software developed for the NetBSD Project by
     20  *      Wasabi Systems, Inc.
     21  * 4. The name of Wasabi Systems, Inc. may not be used to endorse
     22  *    or promote products derived from this software without specific prior
     23  *    written permission.
     24  *
     25  * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND
     26  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     27  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     28  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL WASABI SYSTEMS, INC
     29  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     30  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     31  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     32  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     33  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     34  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     35  * POSSIBILITY OF SUCH DAMAGE.
     36  */
     37 
     38 #ifndef	_IBM4XX_CPU_H_
     39 #define	_IBM4XX_CPU_H_
     40 
     41 #include <powerpc/spr.h>
     42 #include <powerpc/ibm4xx/spr.h>
     43 #include <powerpc/ibm4xx/dcr4xx.h>
     44 
     45 #if defined(_KERNEL)
     46 extern char bootpath[];
     47 
     48 #include <sys/param.h>
     49 #include <sys/device.h>
     50 #include <prop/proplib.h>
     51 
     52 /* export from ibm4xx/autoconf.c */
     53 extern void (*md_device_register)(device_t dev, void *aux);
     54 
     55 /* export from ibm4xx/machdep.c */
     56 extern void (*md_consinit)(void);
     57 extern void (*md_cpu_startup)(void);
     58 
     59 /* export from ibm4xx/ibm40x_machdep.c */
     60 extern void ibm40x_memsize_init(u_int, u_int);
     61 
     62 /* export from ibm4xx/ibm4xx_machdep.c */
     63 extern void ibm4xx_init(void (*)(void));
     64 extern void ibm4xx_cpu_startup(const char *);
     65 extern void ibm4xx_dumpsys(void);
     66 extern void ibm4xx_install_extint(void (*)(void));
     67 
     68 /* export from ibm4xx/ibm4xx_autoconf.c */
     69 extern void ibm4xx_device_register(device_t dev, void *aux);
     70 
     71 /* export from ibm4xx/clock.c */
     72 extern void calc_delayconst(void);
     73 
     74 /* export from ibm4xx/4xx_locore.S */
     75 extern void ppc4xx_reset(void) __dead;
     76 
     77 /*
     78  * DCR (Device Control Register) access. These have to be
     79  * macros because register address is encoded as immediate
     80  * operand.
     81  */
     82 static inline void
     83 mtdcr(int reg, uint32_t val)
     84 {
     85 	__asm volatile("mtdcr %0,%1" : : "K"(reg), "r"(val));
     86 }
     87 
     88 static inline uint32_t
     89 mfdcr(int reg)
     90 {
     91 	uint32_t val;
     92 
     93 	__asm volatile("mfdcr %0,%1" : "=r"(val) : "K"(reg));
     94 	return val;
     95 }
     96 
     97 static inline void
     98 mtcpr(int reg, uint32_t val)
     99 {
    100 	mtdcr(DCR_CPR0_CFGADDR, reg);
    101 	mtdcr(DCR_CPR0_CFGDATA, val);
    102 }
    103 
    104 static inline uint32_t
    105 mfcpr(int reg)
    106 {
    107 	mtdcr(DCR_CPR0_CFGADDR, reg);
    108 	return mfdcr(DCR_CPR0_CFGDATA);
    109 }
    110 
    111 static void inline
    112 mtsdr(int reg, uint32_t val)
    113 {
    114 	mtdcr(DCR_SDR0_CFGADDR, reg);
    115 	mtdcr(DCR_SDR0_CFGDATA, val);
    116 }
    117 
    118 static inline uint32_t
    119 mfsdr(int reg)
    120 {
    121 	mtdcr(DCR_SDR0_CFGADDR, reg);
    122 	return mfdcr(DCR_SDR0_CFGDATA);
    123 }
    124 #endif /* _KERNEL */
    125 
    126 /* Board info dictionary */
    127 extern prop_dictionary_t board_properties;
    128 extern void board_info_init(void);
    129 
    130 /*****************************************************************************/
    131 /* THIS CODE IS OBSOLETE. WILL BE REMOVED */
    132 /*
    133  * Board configuration structure from the OpenBIOS.
    134  */
    135 struct board_cfg_data {
    136 	unsigned char	usr_config_ver[4];
    137 	unsigned char	rom_sw_ver[30];
    138 	unsigned int	mem_size;
    139 	unsigned char	mac_address_local[6];
    140 	unsigned char	mac_address_pci[6];
    141 	unsigned int	processor_speed;
    142 	unsigned int	plb_speed;
    143 	unsigned int	pci_speed;
    144 };
    145 
    146 extern struct board_cfg_data board_data;
    147 /*****************************************************************************/
    148 
    149 #endif	/* _IBM4XX_CPU_H_ */
    150