#include "u.h"#include "lib.h"#include "mem.h"#include "dat.h"#include "fns.h"#include "io.h" #include "dosfs.h" typedef struct Type Type;typedef struct Medium Medium;typedef struct Mode Mode; enum { Dany = -1, Nmedia = 16, /* DS1 switch options */ Sflashfs = 1<<0, /* take local fs from flash */ Snotflash = 1<<1, /* don't boot from flash */}; enum { /* type */ Tflash, Tuart, Tether, Thard, Tany = -1,}; enum { /* flag and name */ Fnone = 0x00, Fdos = 0x01, Ndos = 0x00, Fboot = 0x02, Nboot = 0x01, Fbootp = 0x04, Nbootp = 0x02, Fflash = 0x08, Fuart = 0x10, NName = 0x03, Fany = Fbootp|Fboot|Fdos|Fflash|Fuart, Fini = 0x10, Fprobe = 0x80,}; enum { /* mode */ Mauto = 0x00, Mlocal = 0x01, Manual = 0x02, NMode = 0x03,}; typedef struct Type { int type; char *cname; int flag; int (*init)(void); long (*read)(int, void*, long); long (*seek)(int, long); Partition* (*setpart)(int, char*); char* name[NName]; int mask; Medium* media;} Type; typedef struct Medium { Type* type; int flag; Partition* partition; Dos; Medium* next;} Medium; typedef struct Mode { char* name; int mode;} Mode; static Type types[] = { { Tflash, "flash", Fflash, flashinit, 0, 0, 0, { 0, "F", 0, } },/* { Tuart, "uart", Fuart|Fboot, uartinit, uartread, uartseek, setuartpart, { 0, "u", 0, } },*/ { Tether, "ether", Fbootp, etherinit, 0, 0, 0, { 0, 0, "e", }, }, { Thard, "ata", Fini|Fboot|Fdos, 0, 0, 0, 0, /* not used now, will be later with PCMCIA */ { "hd", "h", 0, }, }, {-1},}; static Medium media[Nmedia];static Medium *curmedium = media; static Mode modes[NMode+1] = { [Mauto] { "auto", Mauto, }, [Mlocal] { "local", Mlocal, }, [Manual] { "manual", Manual, },}; static char *inis[] = { "inferno/inferno.ini", "inferno.ini", "plan9/plan9.ini", "plan9.ini", 0,};char **ini;int predawn; static intparse(char *line, int *type, int *flag, int *dev, char *file){ Type *tp; char buf[2*NAMELEN], *v[4], *p; int i; strcpy(buf, line); switch(getcfields(buf, v, 4, "!")){ case 3: break; case 2: v[2] = ""; break; default: return 0; } *flag = 0; for(tp = types; tp->cname; tp++){ for(i = 0; i < NName; i++){ if(tp->name[i] == 0 || strcmp(v[0], tp->name[i])) continue; *type = tp->type; *flag |= 1<<i; if((*dev = strtoul(v[1], &p, 0)) == 0 && p == v[1]) return 0; strcpy(file, v[2]); return 1; } } return 0; } static intboot(Medium *mp, int flag, char *file){ Dosfile df; char ixdos[128], *p; int r; uartsetboot(0); if(flag & Fbootp){ sprint(BOOTLINE, "%s!%d", mp->type->name[Nbootp], mp->dev); return bootp(mp->dev, file); } if(flag & Fflash){ if(mp->flag & Fflash && flashbootable(0)) flashboot(mp->dev); } if(flag & Fboot){ if(mp->flag & Fini){ (*mp->type->setpart)(mp->dev, "disk"); plan9ini(mp, nil); } if(file == 0 || *file == 0) file = mp->partition->name; (*mp->type->setpart)(mp->dev, file); sprint(BOOTLINE, "%s!%d!%s", mp->type->name[Nboot], mp->dev, file); r = plan9boot(mp->dev, mp->seek, mp->read); uartsetboot(0); return r; } if(flag & Fdos){ if(mp->type->setpart) (*mp->type->setpart)(mp->dev, "disk"); if(mp->flag & Fini) plan9ini(mp, nil); if(file == 0 || *file == 0){ strcpy(ixdos, *ini); if(p = strrchr(ixdos, '/')) p++; else p = ixdos; strcpy(p, "impc"); if(dosstat(mp, ixdos, &df) <= 0) return -1; } else strcpy(ixdos, file); sprint(BOOTLINE, "%s!%d!%s", mp->type->name[Ndos], mp->dev, ixdos); return dosboot(mp, ixdos); } return -1;} static Medium*allocm(Type *tp){ Medium **l; if(curmedium >= &media[Nmedia]) return 0; for(l = &tp->media; *l; l = &(*l)->next) ; *l = curmedium++; return *l;} Medium*probe(int type, int flag, int dev){ Type *tp; int dombr, i, start; Medium *mp; Dosfile df; Partition *pp; for(tp = types; tp->cname; tp++){ if(type != Tany && type != tp->type || tp->init == 0) continue; if(flag != Fnone){ for(mp = tp->media; mp; mp = mp->next){ if((flag & mp->flag) && (dev == Dany || dev == mp->dev)) return mp; } } if((tp->flag & Fprobe) == 0){ tp->flag |= Fprobe; tp->mask = (*tp->init)(); } for(i = 0; tp->mask; i++){ if((tp->mask & (1<<i)) == 0) continue; tp->mask &= ~(1<<i); if((mp = allocm(tp)) == 0) continue; mp->dev = i; mp->flag = tp->flag; mp->seek = tp->seek; mp->read = tp->read; mp->type = tp; if(mp->flag & Fboot){ if((mp->partition = (*tp->setpart)(i, "boot")) == 0) mp->flag &= ~Fboot; if((mp->flag & (Fflash|Fuart)) == 0) (*tp->setpart)(i, "disk"); } if(mp->flag & Fdos){ start = 0; dombr = 1; if(mp->type->setpart){ if(pp = (*mp->type->setpart)(i, "dos")){ if(start = pp->start) dombr = 0; } (*tp->setpart)(i, "disk"); } if(dosinit(mp, start, dombr) < 0) mp->flag &= ~(Fini|Fdos); else print("dos init failed\n"); } if(mp->flag & Fini){ mp->flag &= ~Fini; for(ini = inis; *ini; ini++){ if(dosstat(mp, *ini, &df) <= 0) continue; mp->flag |= Fini; break; } } if((flag & mp->flag) && (dev == Dany || dev == i)) return mp; } } return 0;} voidmain(void){ Medium *mp; int dev, flag, i, mode, tried, type, options; char def[2*NAMELEN], file[2*NAMELEN], line[80], *p; Type *tp; machinit(); archinit(); meminit(); cpminit(); trapinit(); consinit(); /* screen and keyboard initially */ screeninit(); cpuidprint(); alarminit(); clockinit(); predawn = 0; spllo(); options = archoptionsw(); mp = 0; for(tp = types; tp->cname; tp++){ if(tp->type == Tether) continue; if((mp = probe(tp->type, Fini, Dany)) && (mp->flag & Fini)){ plan9ini(mp, nil); break; } } if(mp == 0 || (mp->flag & Fini) == 0) plan9ini(nil, flashconfig(0)); //consinit(); /* establish new console location */ if((options & Snotflash) == 0 && flashbootable(0)){ print("Flash boot\n"); flashboot(0); } tried = 0; mode = Mauto; p = getconf("bootfile"); flag = 0; if(p != 0) { mode = Manual; for(i = 0; i < NMode; i++){ if(strcmp(p, modes[i].name) == 0){ mode = modes[i].mode; goto done; } } if(parse(p, &type, &flag, &dev, file) == 0) { print("Bad bootfile syntax: %s\n", p); goto done; } mp = probe(type, flag, dev); if(mp == 0) { print("Cannot access device: %s\n", p); goto done; } tried = boot(mp, flag, file); }done: if(tried == 0 && mode != Manual){ flag = Fany; if(mode == Mlocal) flag &= ~Fbootp; if(options & Snotflash) flag &= ~Fflash; if((mp = probe(Tany, flag, Dany)) != 0) boot(mp, flag & mp->flag, 0); } def[0] = 0; probe(Tany, Fnone, Dany); flag = 0; for(tp = types; tp->cname; tp++){ for(mp = tp->media; mp; mp = mp->next){ if(flag == 0){ flag = 1; print("Boot devices:"); } if(mp->flag & Fbootp) print(" %s!%d", mp->type->name[Nbootp], mp->dev); if(mp->flag & Fdos) print(" %s!%d", mp->type->name[Ndos], mp->dev); if(mp->flag & (Fflash|Fuart) || mp->flag & Fboot) print(" %s!%d", mp->type->name[Nboot], mp->dev); } } if(flag) print("\n"); for(;;){ if(getstr("boot from", line, sizeof(line), def) >= 0){ if(parse(line, &type, &flag, &dev, file)){ if(mp = probe(type, flag, dev)) boot(mp, flag, file); } } def[0] = 0; }} voidmachinit(void){ memset(m, 0, sizeof(*m)); m->delayloop = 20000; m->cpupvr = getpvr(); m->iomem = KADDR(INTMEM);} intgetcfields(char* lp, char** fields, int n, char* sep){ int i; for(i = 0; lp && *lp && i < n; i++){ while(*lp && strchr(sep, *lp) != 0) *lp++ = 0; if(*lp == 0) break; fields[i] = lp; while(*lp && strchr(sep, *lp) == 0){ if(*lp == '\\' && *(lp+1) == '\n') *lp++ = ' '; lp++; } } return i;} static Map memv[512];static RMap rammap = {"physical memory"}; voidmeminit(void){ ulong e; mapinit(&rammap, memv, sizeof(memv)); e = PADDR(&end); mapfree(&rammap, e, 4*1024*1024-e); /* fixed 4Mbytes is plenty for bootstrap */} void*ialloc(ulong n, int align){ ulong a; int s; if(align <= 0) align = 4; s = splhi(); a = mapalloc(&rammap, 0, n, align); splx(s); if(a == 0) panic("ialloc"); return memset(KADDR(a), 0, n);} void*malloc(ulong n){ ulong *p; n = ((n+sizeof(int)-1)&~(sizeof(int)-1))+2*sizeof(int); p = ialloc(n, sizeof(int)); *p++ = 0xcafebeef;Lines 1–500 of 524. 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#include "u.h" #include "lib.h" #include "mem.h" #include "dat.h" #include "fns.h" #include "io.h" #include "dosfs.h" typedef struct Type Type; typedef struct Medium Medium; typedef struct Mode Mode; enum { Dany = -1, Nmedia = 16, /* DS1 switch options */ Sflashfs = 1<<0, /* take local fs from flash */ Snotflash = 1<<1, /* don't boot from flash */ }; enum { /* type */ Tflash, Tuart, Tether, Thard, Tany = -1, }; enum { /* flag and name */ Fnone = 0x00, Fdos = 0x01, Ndos = 0x00, Fboot = 0x02, Nboot = 0x01, Fbootp = 0x04, Nbootp = 0x02, Fflash = 0x08, Fuart = 0x10, NName = 0x03, Fany = Fbootp|Fboot|Fdos|Fflash|Fuart, Fini = 0x10, Fprobe = 0x80, }; enum { /* mode */ Mauto = 0x00, Mlocal = 0x01, Manual = 0x02, NMode = 0x03, }; typedef struct Type { int type; char *cname; int flag; int (*init)(void); long (*read)(int, void*, long); long (*seek)(int, long); Partition* (*setpart)(int, char*); char* name[NName]; int mask; Medium* media; } Type; typedef struct Medium { Type* type; int flag; Partition* partition; Dos; Medium* next; } Medium; typedef struct Mode { char* name; int mode; } Mode; static Type types[] = { { Tflash, "flash", Fflash, flashinit, 0, 0, 0, { 0, "F", 0, } }, /* { Tuart, "uart", Fuart|Fboot, uartinit, uartread, uartseek, setuartpart, { 0, "u", 0, } }, */ { Tether, "ether", Fbootp, etherinit, 0, 0, 0, { 0, 0, "e", }, }, { Thard, "ata", Fini|Fboot|Fdos, 0, 0, 0, 0, /* not used now, will be later with PCMCIA */ { "hd", "h", 0, }, }, {-1}, }; static Medium media[Nmedia]; static Medium *curmedium = media; static Mode modes[NMode+1] = { [Mauto] { "auto", Mauto, }, [Mlocal] { "local", Mlocal, }, [Manual] { "manual", Manual, }, }; static char *inis[] = { "inferno/inferno.ini", "inferno.ini", "plan9/plan9.ini", "plan9.ini", 0, }; char **ini; int predawn; static int parse(char *line, int *type, int *flag, int *dev, char *file) { Type *tp; char buf[2*NAMELEN], *v[4], *p; int i; strcpy(buf, line); switch(getcfields(buf, v, 4, "!")){ case 3: break; case 2: v[2] = ""; break; default: return 0; } *flag = 0; for(tp = types; tp->cname; tp++){ for(i = 0; i < NName; i++){ if(tp->name[i] == 0 || strcmp(v[0], tp->name[i])) continue; *type = tp->type; *flag |= 1<<i; if((*dev = strtoul(v[1], &p, 0)) == 0 && p == v[1]) return 0; strcpy(file, v[2]); return 1; } } return 0; } static int boot(Medium *mp, int flag, char *file) { Dosfile df; char ixdos[128], *p; int r; uartsetboot(0); if(flag & Fbootp){ sprint(BOOTLINE, "%s!%d", mp->type->name[Nbootp], mp->dev); return bootp(mp->dev, file); } if(flag & Fflash){ if(mp->flag & Fflash && flashbootable(0)) flashboot(mp->dev); } if(flag & Fboot){ if(mp->flag & Fini){ (*mp->type->setpart)(mp->dev, "disk"); plan9ini(mp, nil); } if(file == 0 || *file == 0) file = mp->partition->name; (*mp->type->setpart)(mp->dev, file); sprint(BOOTLINE, "%s!%d!%s", mp->type->name[Nboot], mp->dev, file); r = plan9boot(mp->dev, mp->seek, mp->read); uartsetboot(0); return r; } if(flag & Fdos){ if(mp->type->setpart) (*mp->type->setpart)(mp->dev, "disk"); if(mp->flag & Fini) plan9ini(mp, nil); if(file == 0 || *file == 0){ strcpy(ixdos, *ini); if(p = strrchr(ixdos, '/')) p++; else p = ixdos; strcpy(p, "impc"); if(dosstat(mp, ixdos, &df) <= 0) return -1; } else strcpy(ixdos, file); sprint(BOOTLINE, "%s!%d!%s", mp->type->name[Ndos], mp->dev, ixdos); return dosboot(mp, ixdos); } return -1; } static Medium* allocm(Type *tp) { Medium **l; if(curmedium >= &media[Nmedia]) return 0; for(l = &tp->media; *l; l = &(*l)->next) ; *l = curmedium++; return *l; } Medium* probe(int type, int flag, int dev) { Type *tp; int dombr, i, start; Medium *mp; Dosfile df; Partition *pp; for(tp = types; tp->cname; tp++){ if(type != Tany && type != tp->type || tp->init == 0) continue; if(flag != Fnone){ for(mp = tp->media; mp; mp = mp->next){ if((flag & mp->flag) && (dev == Dany || dev == mp->dev)) return mp; } } if((tp->flag & Fprobe) == 0){ tp->flag |= Fprobe; tp->mask = (*tp->init)(); } for(i = 0; tp->mask; i++){ if((tp->mask & (1<<i)) == 0) continue; tp->mask &= ~(1<<i); if((mp = allocm(tp)) == 0) continue; mp->dev = i; mp->flag = tp->flag; mp->seek = tp->seek; mp->read = tp->read; mp->type = tp; if(mp->flag & Fboot){ if((mp->partition = (*tp->setpart)(i, "boot")) == 0) mp->flag &= ~Fboot; if((mp->flag & (Fflash|Fuart)) == 0) (*tp->setpart)(i, "disk"); } if(mp->flag & Fdos){ start = 0; dombr = 1; if(mp->type->setpart){ if(pp = (*mp->type->setpart)(i, "dos")){ if(start = pp->start) dombr = 0; } (*tp->setpart)(i, "disk"); } if(dosinit(mp, start, dombr) < 0) mp->flag &= ~(Fini|Fdos); else print("dos init failed\n"); } if(mp->flag & Fini){ mp->flag &= ~Fini; for(ini = inis; *ini; ini++){ if(dosstat(mp, *ini, &df) <= 0) continue; mp->flag |= Fini; break; } } if((flag & mp->flag) && (dev == Dany || dev == i)) return mp; } } return 0; } void main(void) { Medium *mp; int dev, flag, i, mode, tried, type, options; char def[2*NAMELEN], file[2*NAMELEN], line[80], *p; Type *tp; machinit(); archinit(); meminit(); cpminit(); trapinit(); consinit(); /* screen and keyboard initially */ screeninit(); cpuidprint(); alarminit(); clockinit(); predawn = 0; spllo(); options = archoptionsw(); mp = 0; for(tp = types; tp->cname; tp++){ if(tp->type == Tether) continue; if((mp = probe(tp->type, Fini, Dany)) && (mp->flag & Fini)){ plan9ini(mp, nil); break; } } if(mp == 0 || (mp->flag & Fini) == 0) plan9ini(nil, flashconfig(0)); //consinit(); /* establish new console location */ if((options & Snotflash) == 0 && flashbootable(0)){ print("Flash boot\n"); flashboot(0); } tried = 0; mode = Mauto; p = getconf("bootfile"); flag = 0; if(p != 0) { mode = Manual; for(i = 0; i < NMode; i++){ if(strcmp(p, modes[i].name) == 0){ mode = modes[i].mode; goto done; } } if(parse(p, &type, &flag, &dev, file) == 0) { print("Bad bootfile syntax: %s\n", p); goto done; } mp = probe(type, flag, dev); if(mp == 0) { print("Cannot access device: %s\n", p); goto done; } tried = boot(mp, flag, file); } done: if(tried == 0 && mode != Manual){ flag = Fany; if(mode == Mlocal) flag &= ~Fbootp; if(options & Snotflash) flag &= ~Fflash; if((mp = probe(Tany, flag, Dany)) != 0) boot(mp, flag & mp->flag, 0); } def[0] = 0; probe(Tany, Fnone, Dany); flag = 0; for(tp = types; tp->cname; tp++){ for(mp = tp->media; mp; mp = mp->next){ if(flag == 0){ flag = 1; print("Boot devices:"); } if(mp->flag & Fbootp) print(" %s!%d", mp->type->name[Nbootp], mp->dev); if(mp->flag & Fdos) print(" %s!%d", mp->type->name[Ndos], mp->dev); if(mp->flag & (Fflash|Fuart) || mp->flag & Fboot) print(" %s!%d", mp->type->name[Nboot], mp->dev); } } if(flag) print("\n"); for(;;){ if(getstr("boot from", line, sizeof(line), def) >= 0){ if(parse(line, &type, &flag, &dev, file)){ if(mp = probe(type, flag, dev)) boot(mp, flag, file); } } def[0] = 0; } } void machinit(void) { memset(m, 0, sizeof(*m)); m->delayloop = 20000; m->cpupvr = getpvr(); m->iomem = KADDR(INTMEM); } int getcfields(char* lp, char** fields, int n, char* sep) { int i; for(i = 0; lp && *lp && i < n; i++){ while(*lp && strchr(sep, *lp) != 0) *lp++ = 0; if(*lp == 0) break; fields[i] = lp; while(*lp && strchr(sep, *lp) == 0){ if(*lp == '\\' && *(lp+1) == '\n') *lp++ = ' '; lp++; } } return i; } static Map memv[512]; static RMap rammap = {"physical memory"}; void meminit(void) { ulong e; mapinit(&rammap, memv, sizeof(memv)); e = PADDR(&end); mapfree(&rammap, e, 4*1024*1024-e); /* fixed 4Mbytes is plenty for bootstrap */ } void* ialloc(ulong n, int align) { ulong a; int s; if(align <= 0) align = 4; s = splhi(); a = mapalloc(&rammap, 0, n, align); splx(s); if(a == 0) panic("ialloc"); return memset(KADDR(a), 0, n); } void* malloc(ulong n) { ulong *p; n = ((n+sizeof(int)-1)&~(sizeof(int)-1))+2*sizeof(int); p = ialloc(n, sizeof(int)); *p++ = 0xcafebeef;