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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 | /* $Id: init.c,v 1.12 1998/01/30 10:59:02 jj Exp $ * init.c: Initialize internal variables used by the PROM * library functions. * * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu) * Copyright (C) 1998 Jakub Jelinek (jj@sunsite.mff.cuni.cz) */ #include <linux/config.h> #include <linux/kernel.h> #include <linux/init.h> #include <asm/openprom.h> #include <asm/oplib.h> #include <asm/sun4prom.h> struct linux_romvec *romvec; enum prom_major_version prom_vers; unsigned int prom_rev, prom_prev; linux_sun4_romvec *sun4_romvec; /* The root node of the prom device tree. */ int prom_root_node; int prom_stdin, prom_stdout; /* Pointer to the device tree operations structure. */ struct linux_nodeops *prom_nodeops; /* You must call prom_init() before you attempt to use any of the * routines in the prom library. It returns 0 on success, 1 on * failure. It gets passed the pointer to the PROM vector. */ extern void prom_meminit(void); extern void prom_ranges_init(void); __initfunc(void prom_init(struct linux_romvec *rp)) { #ifdef CONFIG_SUN4 extern struct linux_romvec *sun4_prom_init(void); rp = sun4_prom_init(); #endif #if CONFIG_AP1000 extern struct linux_romvec *ap_prom_init(void); rp = ap_prom_init(); #endif romvec = rp; switch(romvec->pv_romvers) { case 0: prom_vers = PROM_V0; break; case 2: prom_vers = PROM_V2; break; case 3: prom_vers = PROM_V3; break; case 40: prom_vers = PROM_SUN4; break; case 42: /* why not :-) */ prom_vers = PROM_AP1000; break; default: prom_printf("PROMLIB: Bad PROM version %d\n", romvec->pv_romvers); prom_halt(); break; }; prom_rev = romvec->pv_plugin_revision; prom_prev = romvec->pv_printrev; prom_nodeops = romvec->pv_nodeops; prom_root_node = prom_getsibling(0); if((prom_root_node == 0) || (prom_root_node == -1)) prom_halt(); if((((unsigned long) prom_nodeops) == 0) || (((unsigned long) prom_nodeops) == -1)) prom_halt(); if(prom_vers == PROM_V2 || prom_vers == PROM_V3) { prom_stdout = *romvec->pv_v2bootargs.fd_stdout; prom_stdin = *romvec->pv_v2bootargs.fd_stdin; } prom_meminit(); prom_ranges_init(); #ifndef CONFIG_SUN4 /* SUN4 prints this in sun4_prom_init */ printk("PROMLIB: Sun Boot Prom Version %d Revision %d\n", romvec->pv_romvers, prom_rev); #endif /* Initialization successful. */ return; } |