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280 lines
7.3 KiB
280 lines
7.3 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
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#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) 1995,1996 David S. Miller ([email protected]) |
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*/ |
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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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#include <linux/of.h> |
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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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phandle (*v2_inst2pkg)(int d); /* Convert ihandle to phandle */ |
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char * (*v2_dumb_mem_alloc)(char *va, unsigned int sz); |
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void (*v2_dumb_mem_free)(char *va, unsigned int 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 int paddr, unsigned int sz); |
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void (*v2_dumb_munmap)(char *virta, unsigned int 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, const 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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unsigned int start_adr; |
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unsigned int 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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phandle (*no_nextnode)(phandle node); |
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phandle (*no_child)(phandle node); |
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int (*no_proplen)(phandle node, const char *name); |
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int (*no_getprop)(phandle node, const char *name, char *val); |
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int (*no_setprop)(phandle node, const char *name, char *val, int len); |
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char * (*no_nextprop)(phandle node, char *name); |
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}; |
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/* More fun PROM structures for device probing. */ |
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#if defined(__sparc__) && defined(__arch64__) |
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#define PROMREG_MAX 24 |
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#define PROMVADDR_MAX 16 |
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#define PROMINTR_MAX 32 |
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#else |
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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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#endif |
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struct linux_prom_registers { |
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unsigned int which_io; /* hi part of physical address */ |
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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_prom64_registers { |
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unsigned long phys_addr; |
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unsigned long reg_size; |
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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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/* |
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* Ranges and reg properties are a bit different for PCI. |
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*/ |
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#if defined(__sparc__) && defined(__arch64__) |
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struct linux_prom_pci_registers { |
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unsigned int phys_hi; |
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unsigned int phys_mid; |
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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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#else |
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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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#endif |
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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_intmap { |
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unsigned int phys_hi; |
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unsigned int phys_mid; |
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unsigned int phys_lo; |
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unsigned int interrupt; |
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int cnode; |
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unsigned int cinterrupt; |
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}; |
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struct linux_prom_pci_intmask { |
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unsigned int phys_hi; |
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unsigned int phys_mid; |
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unsigned int phys_lo; |
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unsigned int interrupt; |
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}; |
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#endif /* !(__ASSEMBLY__) */ |
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#endif /* !(__SPARC_OPENPROM_H) */
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