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typedef struct BIOS32si BIOS32si;
typedef struct BIOS32ci BIOS32ci;
typedef struct Conf Conf;
typedef struct Confmem Confmem;
typedef struct FPsave FPsave;
typedef struct ISAConf ISAConf;
typedef struct Label Label;
typedef struct Lock Lock;
typedef struct MMU MMU;
typedef struct Mach Mach;
typedef struct Notsave Notsave;
typedef struct PCArch PCArch;
typedef struct Pcidev Pcidev;
typedef struct PCMmap PCMmap;
typedef struct PCMslot PCMslot;
typedef struct Page Page;
typedef struct PMMU PMMU;
typedef struct Proc Proc;
typedef struct Segdesc Segdesc;
typedef vlong Tval;
typedef struct Ureg Ureg;
typedef struct Vctl Vctl;
#pragma incomplete BIOS32si
#pragma incomplete Pcidev
#pragma incomplete Ureg
#define MAXSYSARG 5 /* for mount(fd, afd, mpt, flag, arg) */
/*
* Where configuration info is left for the loaded programme.
* There are 3584 bytes available at CONFADDR.
*/
#define BOOTLINE ((char*)CONFADDR)
#define BOOTLINELEN 64
#define BOOTARGS ((char*)(CONFADDR+BOOTLINELEN))
#define BOOTARGSLEN (3584-0x200-BOOTLINELEN)
#define MAXCONF 100
enum {
Promptsecs = 60,
};
char *confname[MAXCONF];
char *confval[MAXCONF];
int nconf;
#define KMESGSIZE 64
#define PCICONSSIZE 64
#define STAGESIZE 64
#define NAMELEN 28
#define GSHORT(p) (((p)[1]<<8)|(p)[0])
#define GLSHORT(p) (((p)[0]<<8)|(p)[1])
#define GLONG(p) ((GSHORT(p+2)<<16)|GSHORT(p))
#define GLLONG(p) (((ulong)GLSHORT(p)<<16)|GLSHORT(p+2))
#define PLLONG(p,v) (p)[3]=(v);(p)[2]=(v)>>8;(p)[1]=(v)>>16;(p)[0]=(v)>>24
#define PLVLONG(p,v) (p)[7]=(v);(p)[6]=(v)>>8;(p)[5]=(v)>>16;(p)[4]=(v)>>24;\
(p)[3]=(v)>>32; (p)[2]=(v)>>40;\
(p)[1]=(v)>>48; (p)[0]=(v)>>56;
enum {
Stkpat = 0,
};
/*
* parameters for sysproc.c
*/
#define AOUT_MAGIC (I_MAGIC)
struct Lock
{
ulong magic;
ulong key;
ulong sr;
ulong pc;
Proc *p;
Mach *m;
ushort isilock;
long lockcycles;
};
struct Label
{
ulong sp;
ulong pc;
};
/*
* FPsave.status
*/
enum
{
/* this is a state */
FPinit= 0,
FPactive= 1,
FPinactive= 2,
/* the following is a bit that can be or'd into the state */
FPillegal= 0x100,
};
struct FPsave
{
ushort control;
ushort r1;
ushort status;
ushort r2;
ushort tag;
ushort r3;
ulong pc;
ushort selector;
ushort r4;
ulong operand;
ushort oselector;
ushort r5;
uchar regs[80]; /* floating point registers */
};
struct Confmem
{
ulong base;
ulong npage;
ulong kbase;
ulong klimit;
};
struct Conf
{
ulong nmach; /* processors */
ulong nproc; /* processes */
ulong monitor; /* has monitor? */
Confmem mem[4]; /* physical memory */
ulong npage; /* total physical pages of memory */
ulong upages; /* user page pool */
ulong nimage; /* number of page cache image headers */
ulong nswap; /* number of swap pages */
int nswppo; /* max # of pageouts per segment pass */
ulong base0; /* base of bank 0 */
ulong base1; /* base of bank 1 */
ulong copymode; /* 0 is copy on write, 1 is copy on reference */
ulong ialloc; /* max interrupt time allocation in bytes */
ulong pipeqsize; /* size in bytes of pipe queues */
int nuart; /* number of uart devices */
};
/*
* MMU stuff in proc
*/
#define NCOLOR 1
struct PMMU
{
Page* mmupdb; /* page directory base */
Page* mmufree; /* unused page table pages */
Page* mmuused; /* used page table pages */
Page* kmaptable; /* page table used by kmap */
uint lastkmap; /* last entry used by kmap */
int nkmap; /* number of current kmaps */
};
/*
* things saved in the Proc structure during a notify
*/
struct Notsave
{
ulong svflags;
ulong svcs;
ulong svss;
};
#include "../port/portdat.h"
typedef struct {
ulong link; /* link (old TSS selector) */
ulong esp0; /* privilege level 0 stack pointer */
ulong ss0; /* privilege level 0 stack selector */
ulong esp1; /* privilege level 1 stack pointer */
ulong ss1; /* privilege level 1 stack selector */
ulong esp2; /* privilege level 2 stack pointer */
ulong ss2; /* privilege level 2 stack selector */
ulong xcr3; /* page directory base register - not used because we don't use trap gates */
ulong eip; /* instruction pointer */
ulong eflags; /* flags register */
ulong eax; /* general registers */
ulong ecx;
ulong edx;
ulong ebx;
ulong esp;
ulong ebp;
ulong esi;
ulong edi;
ulong es; /* segment selectors */
ulong cs;
ulong ss;
ulong ds;
ulong fs;
ulong gs;
ulong ldt; /* selector for task's LDT */
ulong iomap; /* I/O map base address + T-bit */
} Tss;
struct Segdesc
{
ulong d0;
ulong d1;
};
struct Mach
{
int machno; /* physical id of processor (KNOWN TO ASSEMBLY) */
ulong splpc; /* pc of last caller to splhi */
ulong* pdb; /* page directory base for this processor (va) */
Tss* tss; /* tss for this processor */
Segdesc *gdt; /* gdt for this processor */
Proc* proc; /* current process on this processor */
Proc* externup; /* extern register Proc *up */
Page* pdbpool;
int pdbcnt;
ulong ticks; /* of the clock since boot time */
Label sched; /* scheduler wakeup */
Lock alarmlock; /* access to alarm list */
void* alarm; /* alarms bound to this clock */
int inclockintr;
Proc* readied; /* for runproc */
ulong schedticks; /* next forced context switch */
int tlbfault;
int tlbpurge;
int pfault;
int cs;
int syscall;
int load;
int intr;
int flushmmu; /* make current proc flush it's mmu state */
int ilockdepth;
Perf perf; /* performance counters */
ulong spuriousintr;
int lastintr;
int loopconst;
Lock apictimerlock;
int cpumhz;
uvlong cyclefreq; /* Frequency of user readable cycle counter */
uvlong cpuhz;
int cpuidax;
int cpuiddx;
char cpuidid[16];
char* cpuidtype;
int havetsc;
int havepge;
uvlong tscticks;
int pdballoc;
int pdbfree;
vlong mtrrcap;
vlong mtrrdef;
vlong mtrrfix[11];
vlong mtrrvar[32]; /* 256 max. */
int stack[1];
};
/*
* KMap the structure doesn't exist, but the functions do.
*/
typedef struct KMap KMap;
#define VA(k) ((void*)(k))
KMap* kmap(Page*);
void kunmap(KMap*);
struct
{
Lock;
int machs; /* bitmap of active CPUs */
int exiting; /* shutdown */
int ispanic; /* shutdown in response to a panic */
int thunderbirdsarego; /* lets the added processors continue to schedinit */
int rebooting; /* just idle cpus > 0 */
}active;
/*
* routines for things outside the PC model, like power management
*/
struct PCArch
{
char* id;
int (*ident)(void); /* this should be in the model */
void (*reset)(void); /* this should be in the model */
int (*serialpower)(int); /* 1 == on, 0 == off */
int (*modempower)(int); /* 1 == on, 0 == off */
void (*intrinit)(void);
int (*intrenable)(Vctl*);
int (*intrvecno)(int);
int (*intrdisable)(int);
void (*introff)(void);
void (*intron)(void);
void (*clockenable)(void);
uvlong (*fastclock)(uvlong*);
void (*timerset)(uvlong);
void (*resetothers)(void); /* put other cpus into reset */
};
/* cpuid instruction result register bits */
enum {
/* dx */
Fpuonchip = 1<<0,
Pse = 1<<3, /* page size extensions */
Tsc = 1<<4, /* time-stamp counter */
Cpumsr = 1<<5, /* model-specific registers, rdmsr/wrmsr */
Pae = 1<<6, /* physical-addr extensions */
Mce = 1<<7, /* machine-check exception */
Cmpxchg8b = 1<<8,
Cpuapic = 1<<9,
Mtrr = 1<<12, /* memory-type range regs. */
Pge = 1<<13, /* page global extension */
Pse2 = 1<<17, /* more page size extensions */
Clflush = 1<<19,
Mmx = 1<<23,
Fxsr = 1<<24, /* have SSE FXSAVE/FXRSTOR */
Sse = 1<<25, /* thus sfence instr. */
Sse2 = 1<<26, /* thus mfence & lfence instr.s */
};
/*
* a parsed plan9.ini line
*/
#define NISAOPT 8
struct ISAConf {
char *type;
ulong port;
int irq;
ulong dma;
ulong mem;
ulong size;
ulong freq;
int nopt;
char *opt[NISAOPT];
};
extern PCArch *arch; /* PC architecture */
/*
* Each processor sees its own Mach structure at address MACHADDR.
* However, the Mach structures must also be available via the per-processor
* MMU information array machp, mainly for disambiguation and access to
* the clock which is only maintained by the bootstrap processor (0).
*/
Mach* machp[MAXMACH];
#define MACHP(n) (machp[n])
extern Mach *m;
#define up (((Mach*)MACHADDR)->externup)
/*
* hardware info about a device
*/
typedef struct {
ulong port;
int size;
} Devport;
struct DevConf
{
ulong intnum; /* interrupt number */
char *type; /* card type, malloced */
int nports; /* Number of ports */
Devport *ports; /* The ports themselves */
};
typedef struct BIOS32ci { /* BIOS32 Calling Interface */
u32int eax;
u32int ebx;
u32int ecx;
u32int edx;
u32int esi;
u32int edi;
} BIOS32ci;
/* misc. */
extern int v_flag;
/* APM goo */
typedef struct Apminfo {
int haveinfo;
int ax;
int cx;
int dx;
int di;
int ebx;
int esi;
} Apminfo;
extern Apminfo apm;
/*
* Multiboot grot.
*/
typedef struct Mbi Mbi;
struct Mbi {
u32int flags;
u32int memlower;
u32int memupper;
u32int bootdevice;
u32int cmdline;
u32int modscount;
u32int modsaddr;
u32int syms[4];
u32int mmaplength;
u32int mmapaddr;
u32int driveslength;
u32int drivesaddr;
u32int configtable;
u32int bootloadername;
u32int apmtable;
u32int vbe[6];
};
enum { /* flags */
Fmem = 0x00000001, /* mem* valid */
Fbootdevice = 0x00000002, /* bootdevice valid */
Fcmdline = 0x00000004, /* cmdline valid */
Fmods = 0x00000008, /* mod* valid */
Fsyms = 0x00000010, /* syms[] has a.out info */
Felf = 0x00000020, /* syms[] has ELF info */
Fmmap = 0x00000040, /* mmap* valid */
Fdrives = 0x00000080, /* drives* valid */
Fconfigtable = 0x00000100, /* configtable* valid */
Fbootloadername = 0x00000200, /* bootloadername* valid */
Fapmtable = 0x00000400, /* apmtable* valid */
Fvbe = 0x00000800, /* vbe[] valid */
};
typedef struct Mod Mod;
struct Mod {
u32int modstart;
u32int modend;
u32int string;
u32int reserved;
};
typedef struct MMap MMap;
struct MMap {
u32int size;
u32int base[2];
u32int length[2];
u32int type;
};
MMap mmap[32+1];
int nmmap;
Mbi *multibootheader;
enum {
Maxfile = 4096,
};
/* from 9load */
enum { /* returned by bootpass */
MORE, ENOUGH, FAIL
};
enum {
INITKERNEL,
READEXEC,
READ9TEXT,
READ9DATA,
READGZIP,
READEHDR, /* elf states ... */
READPHDR,
READEPAD,
READEDATA, /* through here */
READE64HDR, /* elf64 states ... */
READ64PHDR,
READE64PAD,
READE64DATA, /* through here */
TRYBOOT,
TRYEBOOT, /* another elf state */
TRYE64BOOT, /* another elf state */
INIT9LOAD,
READ9LOAD,
FAILED
};
typedef struct Execbytes Execbytes;
struct Execbytes
{
uchar magic[4]; /* magic number */
uchar text[4]; /* size of text segment */
uchar data[4]; /* size of initialized data */
uchar bss[4]; /* size of uninitialized data */
uchar syms[4]; /* size of symbol table */
uchar entry[4]; /* entry point */
uchar spsz[4]; /* size of sp/pc offset table */
uchar pcsz[4]; /* size of pc/line number table */
};
typedef struct {
Execbytes;
uvlong uvl[1];
} Exechdr;
typedef struct Boot Boot;
struct Boot {
int state;
Exechdr hdr;
uvlong entry;
char *bp; /* base ptr */
char *wp; /* write ptr */
char *ep; /* end ptr */
};
extern int debugload;
extern Apminfo apm;
extern Chan *conschan;
extern char *defaultpartition;
extern int iniread;
extern u32int memstart;
extern u32int memend;
extern int noclock;
extern int pxe;
extern int vga;
extern int biosinited;
extern void _KTZERO(void);
#define KTZERO ((uintptr)_KTZERO)