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- #ifndef __ASM_PPC_PROCESSOR_H
- #define __ASM_PPC_PROCESSOR_H
-
- #include <linux/config.h>
-
- #include <asm/ptrace.h>
- #include <asm/residual.h>
-
- /* Bit encodings for Machine State Register (MSR) */
- #define MSR_POW (1<<18) /* Enable Power Management */
- #define MSR_TGPR (1<<17) /* TLB Update registers in use */
- #define MSR_ILE (1<<16) /* Interrupt Little-Endian enable */
- #define MSR_EE (1<<15) /* External Interrupt enable */
- #define MSR_PR (1<<14) /* Supervisor/User privilege */
- #define MSR_FP (1<<13) /* Floating Point enable */
- #define MSR_ME (1<<12) /* Machine Check enable */
- #define MSR_FE0 (1<<11) /* Floating Exception mode 0 */
- #define MSR_SE (1<<10) /* Single Step */
- #define MSR_BE (1<<9) /* Branch Trace */
- #define MSR_FE1 (1<<8) /* Floating Exception mode 1 */
- #define MSR_IP (1<<6) /* Exception prefix 0x000/0xFFF */
- #define MSR_IR (1<<5) /* Instruction MMU enable */
- #define MSR_DR (1<<4) /* Data MMU enable */
- #define MSR_RI (1<<1) /* Recoverable Exception */
- #define MSR_LE (1<<0) /* Little-Endian enable */
-
- #ifdef CONFIG_APUS
- #define MSR_ MSR_ME|MSR_IP|MSR_RI
- #else
- #define MSR_ MSR_ME|MSR_RI
- #endif
- #define MSR_KERNEL MSR_|MSR_IR|MSR_DR
- #define MSR_USER MSR_KERNEL|MSR_PR|MSR_EE
-
- /* Bit encodings for Hardware Implementation Register (HID0)
- on PowerPC 603, 604, etc. processors (not 601). */
- #define HID0_EMCP (1<<31) /* Enable Machine Check pin */
- #define HID0_EBA (1<<29) /* Enable Bus Address Parity */
- #define HID0_EBD (1<<28) /* Enable Bus Data Parity */
- #define HID0_SBCLK (1<<27)
- #define HID0_EICE (1<<26)
- #define HID0_ECLK (1<<25)
- #define HID0_PAR (1<<24)
- #define HID0_DOZE (1<<23)
- #define HID0_NAP (1<<22)
- #define HID0_SLEEP (1<<21)
- #define HID0_DPM (1<<20)
- #define HID0_ICE (1<<15) /* Instruction Cache Enable */
- #define HID0_DCE (1<<14) /* Data Cache Enable */
- #define HID0_ILOCK (1<<13) /* Instruction Cache Lock */
- #define HID0_DLOCK (1<<12) /* Data Cache Lock */
- #define HID0_ICFI (1<<11) /* Instruction Cache Flash Invalidate */
- #define HID0_DCI (1<<10) /* Data Cache Invalidate */
- #define HID0_SIED (1<<7) /* Serial Instruction Execution [Disable] */
- #define HID0_BHTE (1<<2) /* Branch History Table Enable */
- #define HID0_BTCD (1<<1) /* Branch target cache disable */
-
- /* fpscr settings */
- #define FPSCR_FX (1<<31)
- #define FPSCR_FEX (1<<30)
-
- #define _MACH_prep 1
- #define _MACH_Pmac 2 /* pmac or pmac clone (non-chrp) */
- #define _MACH_chrp 4 /* chrp machine */
- #define _MACH_mbx 8 /* Motorola MBX board */
- #define _MACH_apus 16 /* amiga with phase5 powerup */
- #define _MACH_fads 32 /* Motorola FADS board */
- #define _MACH_rpxlite 64 /* RPCG RPX-Lite 8xx board */
- #define _MACH_bseip 128 /* Bright Star Engineering ip-Engine */
- #define _MACH_yk 256 /* Motorola Yellowknife */
-
- /* see residual.h for these */
- #define _PREP_Motorola 0x01 /* motorola prep */
- #define _PREP_Firm 0x02 /* firmworks prep */
- #define _PREP_IBM 0x00 /* ibm prep */
- #define _PREP_Bull 0x03 /* bull prep */
- #define _PREP_Radstone 0x04 /* Radstone Technology PLC prep */
-
- /*
- * Radstone board types
- */
- #define RS_SYS_TYPE_PPC1 0
- #define RS_SYS_TYPE_PPC2 1
- #define RS_SYS_TYPE_PPC1a 2
- #define RS_SYS_TYPE_PPC2a 3
- #define RS_SYS_TYPE_PPC4 4
- #define RS_SYS_TYPE_PPC4a 5
- #define RS_SYS_TYPE_PPC2ep 6
-
- /* these are arbitrary */
- #define _CHRP_Motorola 0x04 /* motorola chrp, the cobra */
- #define _CHRP_IBM 0x05 /* IBM chrp, the longtrail and longtrail 2 */
-
- #define _GLOBAL(n)\
- .globl n;\
- n:
-
- #define TBRU 269 /* Time base Upper/Lower (Reading) */
- #define TBRL 268
- #define TBWU 284 /* Time base Upper/Lower (Writing) */
- #define TBWL 285
- #define XER 1
- #define LR 8
- #define CTR 9
- #define HID0 1008 /* Hardware Implementation */
- #define PVR 287 /* Processor Version */
- #define IBAT0U 528 /* Instruction BAT #0 Upper/Lower */
- #define IBAT0L 529
- #define IBAT1U 530 /* Instruction BAT #1 Upper/Lower */
- #define IBAT1L 531
- #define IBAT2U 532 /* Instruction BAT #2 Upper/Lower */
- #define IBAT2L 533
- #define IBAT3U 534 /* Instruction BAT #3 Upper/Lower */
- #define IBAT3L 535
- #define DBAT0U 536 /* Data BAT #0 Upper/Lower */
- #define DBAT0L 537
- #define DBAT1U 538 /* Data BAT #1 Upper/Lower */
- #define DBAT1L 539
- #define DBAT2U 540 /* Data BAT #2 Upper/Lower */
- #define DBAT2L 541
- #define DBAT3U 542 /* Data BAT #3 Upper/Lower */
- #define DBAT3L 543
- #define DMISS 976 /* TLB Lookup/Refresh registers */
- #define DCMP 977
- #define HASH1 978
- #define HASH2 979
- #define IMISS 980
- #define ICMP 981
- #define RPA 982
- #define SDR1 25 /* MMU hash base register */
- #define DAR 19 /* Data Address Register */
- #define SPR0 272 /* Supervisor Private Registers */
- #define SPRG0 272
- #define SPR1 273
- #define SPRG1 273
- #define SPR2 274
- #define SPRG2 274
- #define SPR3 275
- #define SPRG3 275
- #define DSISR 18
- #define SRR0 26 /* Saved Registers (exception) */
- #define SRR1 27
- #define IABR 1010 /* Instruction Address Breakpoint */
- #define DEC 22 /* Decrementer */
- #define EAR 282 /* External Address Register */
- #define L2CR 1017 /* PPC 750 L2 control register */
-
- #define THRM1 1020
- #define THRM2 1021
- #define THRM3 1022
- #define THRM1_TIN 0x1
- #define THRM1_TIV 0x2
- #define THRM1_THRES (0x7f<<2)
- #define THRM1_TID (1<<29)
- #define THRM1_TIE (1<<30)
- #define THRM1_V (1<<31)
- #define THRM3_E (1<<31)
-
- /* Segment Registers */
- #define SR0 0
- #define SR1 1
- #define SR2 2
- #define SR3 3
- #define SR4 4
- #define SR5 5
- #define SR6 6
- #define SR7 7
- #define SR8 8
- #define SR9 9
- #define SR10 10
- #define SR11 11
- #define SR12 12
- #define SR13 13
- #define SR14 14
- #define SR15 15
-
- #ifndef __ASSEMBLY__
- /*
- * If we've configured for a specific machine set things
- * up so the compiler can optimize away the other parts.
- * -- Cort
- */
- #ifdef CONFIG_MACH_SPECIFIC
- #ifdef CONFIG_PREP
- #define _machine (_MACH_prep)
- #define is_prep (1)
- #define is_chrp (0)
- #define have_of (0)
- #endif /* CONFIG_PREP */
-
- #ifdef CONFIG_CHRP
- #define _machine (_MACH_chrp)
- #define is_prep (0)
- #define is_chrp (1)
- #define have_of (1)
- #endif /* CONFIG_CHRP */
-
- #ifdef CONFIG_PMAC
- #define _machine (_MACH_Pmac)
- #define is_prep (0)
- #define is_chrp (0)
- #define have_of (1)
- #endif /* CONFIG_PMAC */
-
- #ifdef CONFIG_MBX
- #define _machine (_MACH_mbx)
- #define is_prep (0)
- #define is_chrp (0)
- #define have_of (0)
- #endif /* CONFIG_MBX */
-
- #ifdef CONFIG_FADS
- #define _machine (_MACH_fads)
- #define is_prep (0)
- #define is_chrp (0)
- #define have_of (0)
- #endif /* CONFIG_FADS */
-
- #ifdef CONFIG_APUS
- #define _machine (_MACH_apus)
- #define is_prep (0)
- #define is_chrp (0)
- #define have_of (0)
- #endif /* CONFIG_APUS */
-
- #else /* CONFIG_MACH_SPECIFIC */
-
- extern int _machine;
-
- /* if we're a prep machine */
- #define is_prep (_machine == _MACH_prep)
-
- /* if we're a chrp machine */
- #define is_chrp (_machine == _MACH_chrp)
-
- /* if we have openfirmware */
- extern unsigned long have_of;
- #endif /* CONFIG_MACH_SPECIFIC */
-
- /* what kind of prep workstation we are */
- extern int _prep_type;
- /*
- * This is used to identify the board type from a given PReP board
- * vendor. Board revision is also made available.
- */
- extern unsigned char ucSystemType;
- extern unsigned char ucBoardRev;
- extern unsigned char ucBoardRevMaj, ucBoardRevMin;
-
- struct task_struct;
- void start_thread(struct pt_regs *regs, unsigned long nip, unsigned long sp);
- void release_thread(struct task_struct *);
-
- /*
- * Bus types
- */
- #define EISA_bus 0
- #define EISA_bus__is_a_macro /* for versions in ksyms.c */
- #define MCA_bus 0
- #define MCA_bus__is_a_macro /* for versions in ksyms.c */
-
- /* Lazy FPU handling on uni-processor */
- extern struct task_struct *last_task_used_math;
-
- /*
- * this is the minimum allowable io space due to the location
- * of the io areas on prep (first one at 0x80000000) but
- * as soon as I get around to remapping the io areas with the BATs
- * to match the mac we can raise this. -- Cort
- */
- #define TASK_SIZE (0x80000000UL)
-
- /* This decides where the kernel will search for a free chunk of vm
- * space during mmap's.
- */
- #define TASK_UNMAPPED_BASE (TASK_SIZE / 8 * 3)
-
- typedef struct {
- unsigned long seg;
- } mm_segment_t;
-
- struct thread_struct {
- unsigned long ksp; /* Kernel stack pointer */
- unsigned long *pg_tables; /* Base of page-table tree */
- unsigned long wchan; /* Event task is sleeping on */
- struct pt_regs *regs; /* Pointer to saved register state */
- mm_segment_t fs; /* for get_fs() validation */
- signed long last_syscall;
- double fpr[32]; /* Complete floating point set */
- unsigned long fpscr_pad; /* fpr ... fpscr must be contiguous */
- unsigned long fpscr; /* Floating point status */
- unsigned long smp_fork_ret;
- };
-
- #define INIT_SP (sizeof(init_stack) + (unsigned long) &init_stack)
-
- #define INIT_TSS { \
- INIT_SP, /* ksp */ \
- (unsigned long *) swapper_pg_dir, /* pg_tables */ \
- 0, /* wchan */ \
- (struct pt_regs *)INIT_SP - 1, /* regs */ \
- KERNEL_DS, /*fs*/ \
- 0, /* last_syscall */ \
- {0}, 0, 0, 0 \
- }
-
- /*
- * Note: the vm_start and vm_end fields here should *not*
- * be in kernel space. (Could vm_end == vm_start perhaps?)
- */
- #define INIT_MMAP { &init_mm, 0, 0x1000, NULL, \
- PAGE_SHARED, VM_READ | VM_WRITE | VM_EXEC, \
- 1, NULL, NULL }
-
- /*
- * Return saved PC of a blocked thread. For now, this is the "user" PC
- */
- static inline unsigned long thread_saved_pc(struct thread_struct *t)
- {
- return (t->regs) ? t->regs->nip : 0;
- }
-
- #define copy_segments(nr, tsk, mm) do { } while (0)
- #define release_segments(mm) do { } while (0)
- #define forget_segments() do { } while (0)
-
- /*
- * NOTE! The task struct and the stack go together
- */
- #define alloc_task_struct() \
- ((struct task_struct *) __get_free_pages(GFP_KERNEL,1))
- #define free_task_struct(p) free_pages((unsigned long)(p),1)
-
- /* in process.c - for early bootup debug -- Cort */
- int ll_printk(const char *, ...);
- void ll_puts(const char *);
-
- #define init_task (init_task_union.task)
- #define init_stack (init_task_union.stack)
-
- #endif /* ndef ASSEMBLY*/
-
-
- #endif /* __ASM_PPC_PROCESSOR_H */
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