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