/* $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) */