/* $Id: openprom.h,v 1.24 2000/06/04 06:23:53 anton Exp $ */
#ifndef __SPARC_OPENPROM_H
#define __SPARC_OPENPROM_H
/* openprom.h: Prom structures and defines for access to the OPENBOOT
* prom routines and data areas.
*
* Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
*/
#include <asm/vaddrs.h>
/* Empirical constants... */
#define LINUX_OPPROM_MAGIC 0x10010407
#ifndef __ASSEMBLY__
/* V0 prom device operations. */
struct linux_dev_v0_funcs {
int (*v0_devopen)(char *device_str);
int (*v0_devclose)(int dev_desc);
int (*v0_rdblkdev)(int dev_desc, int num_blks, int blk_st, char *buf);
int (*v0_wrblkdev)(int dev_desc, int num_blks, int blk_st, char *buf);
int (*v0_wrnetdev)(int dev_desc, int num_bytes, char *buf);
int (*v0_rdnetdev)(int dev_desc, int num_bytes, char *buf);
int (*v0_rdchardev)(int dev_desc, int num_bytes, int dummy, char *buf);
int (*v0_wrchardev)(int dev_desc, int num_bytes, int dummy, char *buf);
int (*v0_seekdev)(int dev_desc, long logical_offst, int from);
};
/* V2 and later prom device operations. */
struct linux_dev_v2_funcs {
int (*v2_inst2pkg)(int d); /* Convert ihandle to phandle */
char * (*v2_dumb_mem_alloc)(char *va, unsigned sz);
void (*v2_dumb_mem_free)(char *va, unsigned sz);
/* To map devices into virtual I/O space. */
char * (*v2_dumb_mmap)(char *virta, int which_io, unsigned paddr, unsigned sz);
void (*v2_dumb_munmap)(char *virta, unsigned size);
int (*v2_dev_open)(char *devpath);
void (*v2_dev_close)(int d);
int (*v2_dev_read)(int d, char *buf, int nbytes);
int (*v2_dev_write)(int d, char *buf, int nbytes);
int (*v2_dev_seek)(int d, int hi, int lo);
/* Never issued (multistage load support) */
void (*v2_wheee2)(void);
void (*v2_wheee3)(void);
};
struct linux_mlist_v0 {
struct linux_mlist_v0 *theres_more;
char *start_adr;
unsigned num_bytes;
};
struct linux_mem_v0 {
struct linux_mlist_v0 **v0_totphys;
struct linux_mlist_v0 **v0_prommap;
struct linux_mlist_v0 **v0_available; /* What we can use */
};
/* Arguments sent to the kernel from the boot prompt. */
struct linux_arguments_v0 {
char *argv[8];
char args[100];
char boot_dev[2];
int boot_dev_ctrl;
int boot_dev_unit;
int dev_partition;
char *kernel_file_name;
void *aieee1; /* XXX */
};
/* V2 and up boot things. */
struct linux_bootargs_v2 {
char **bootpath;
char **bootargs;
int *fd_stdin;
int *fd_stdout;
};
/* The top level PROM vector. */
struct linux_romvec {
/* Version numbers. */
unsigned int pv_magic_cookie;
unsigned int pv_romvers;
unsigned int pv_plugin_revision;
unsigned int pv_printrev;
/* Version 0 memory descriptors. */
struct linux_mem_v0 pv_v0mem;
/* Node operations. */
struct linux_nodeops *pv_nodeops;
char **pv_bootstr;
struct linux_dev_v0_funcs pv_v0devops;
char *pv_stdin;
char *pv_stdout;
#define PROMDEV_KBD 0 /* input from keyboard */
#define PROMDEV_SCREEN 0 /* output to screen */
#define PROMDEV_TTYA 1 /* in/out to ttya */
#define PROMDEV_TTYB 2 /* in/out to ttyb */
/* Blocking getchar/putchar. NOT REENTRANT! (grr) */
int (*pv_getchar)(void);
void (*pv_putchar)(int ch);
/* Non-blocking variants. */
int (*pv_nbgetchar)(void);
int (*pv_nbputchar)(int ch);
void (*pv_putstr)(char *str, int len);
/* Miscellany. */
void (*pv_reboot)(char *bootstr);
void (*pv_printf)(__const__ char *fmt, ...);
void (*pv_abort)(void);
__volatile__ int *pv_ticks;
void (*pv_halt)(void);
void (**pv_synchook)(void);
/* Evaluate a forth string, not different proto for V0 and V2->up. */
union {
void (*v0_eval)(int len, char *str);
void (*v2_eval)(char *str);
} pv_fortheval;
struct linux_arguments_v0 **pv_v0bootargs;
/* Get ether address. */
unsigned int (*pv_enaddr)(int d, char *enaddr);
struct linux_bootargs_v2 pv_v2bootargs;
struct linux_dev_v2_funcs pv_v2devops;
int filler[15];
/* This one is sun4c/sun4 only. */
void (*pv_setctxt)(int ctxt, char *va, int pmeg);
/* Prom version 3 Multiprocessor routines. This stuff is crazy.
* No joke. Calling these when there is only one cpu probably
* crashes the machine, have to test this. :-)
*/
/* v3_cpustart() will start the cpu 'whichcpu' in mmu-context
* 'thiscontext' executing at address 'prog_counter'
*/
int (*v3_cpustart)(unsigned int whichcpu, int ctxtbl_ptr,
int thiscontext, char *prog_counter);
/* v3_cpustop() will cause cpu 'whichcpu' to stop executing
* until a resume cpu call is made.
*/
int (*v3_cpustop)(unsigned int whichcpu);
/* v3_cpuidle() will idle cpu 'whichcpu' until a stop or
* resume cpu call is made.
*/
int (*v3_cpuidle)(unsigned int whichcpu);
/* v3_cpuresume() will resume processor 'whichcpu' executing
* starting with whatever 'pc' and 'npc' were left at the
* last 'idle' or 'stop' call.
*/
int (*v3_cpuresume)(unsigned int whichcpu);
};
/* Routines for traversing the prom device tree. */
struct linux_nodeops {
int (*no_nextnode)(int node);
int (*no_child)(int node);
int (*no_proplen)(int node, char *name);
int (*no_getprop)(int node, char *name, char *val);
int (*no_setprop)(int node, char *name, char *val, int len);
char * (*no_nextprop)(int node, char *name);
};
/* More fun PROM structures for device probing. */
#define PROMREG_MAX 16
#define PROMVADDR_MAX 16
#define PROMINTR_MAX 15
struct linux_prom_registers {
unsigned int which_io; /* is this in OBIO space? */
unsigned int phys_addr; /* The physical address of this register */
unsigned int reg_size; /* How many bytes does this register take up? */
};
struct linux_prom_irqs {
int pri; /* IRQ priority */
int vector; /* This is foobar, what does it do? */
};
/* Element of the "ranges" vector */
struct linux_prom_ranges {
unsigned int ot_child_space;
unsigned int ot_child_base; /* Bus feels this */
unsigned int ot_parent_space;
unsigned int ot_parent_base; /* CPU looks from here */
unsigned int or_size;
};
/* Ranges and reg properties are a bit different for PCI. */
struct linux_prom_pci_registers {
/*
* We don't know what information this field contain.
* We guess, PCI device function is in bits 15:8
* So, ...
*/
unsigned int which_io; /* Let it be which_io */
unsigned int phys_hi;
unsigned int phys_lo;
unsigned int size_hi;
unsigned int size_lo;
};
struct linux_prom_pci_ranges {
unsigned int child_phys_hi; /* Only certain bits are encoded here. */
unsigned int child_phys_mid;
unsigned int child_phys_lo;
unsigned int parent_phys_hi;
unsigned int parent_phys_lo;
unsigned int size_hi;
unsigned int size_lo;
};
struct linux_prom_pci_assigned_addresses {
unsigned int which_io;
unsigned int phys_hi;
unsigned int phys_lo;
unsigned int size_hi;
unsigned int size_lo;
};
struct linux_prom_ebus_ranges {
unsigned int child_phys_hi;
unsigned int child_phys_lo;
unsigned int parent_phys_hi;
unsigned int parent_phys_mid;
unsigned int parent_phys_lo;
unsigned int size;
};
#endif /* !(__ASSEMBLY__) */
#endif /* !(__SPARC_OPENPROM_H) */
