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- /*
- * Memory and machine-specific definitions. Used in C and assembler.
- */
- /*
- * Sizes
- */
- #define BI2BY 8 /* bits per byte */
- #define BI2WD 32 /* bits per word */
- #define BY2WD 4 /* bytes per word */
- #define BY2V 8 /* bytes per vlong */
- #define BY2PG 4096 /* bytes per page */
- #define WD2PG (BY2PG/BY2WD) /* words per page */
- #define PGSHIFT 12 /* log(BY2PG) */
- #define ROUND(s, sz) (((s)+(sz-1))&~(sz-1))
- #define PGROUND(s) ROUND(s, BY2PG)
- #define CACHELINELOG 4
- #define CACHELINESZ (1<<CACHELINELOG)
- #define BLOCKALIGN CACHELINESZ
- #define MHz 1000000
- #define BY2PTE 8 /* bytes per pte entry */
- #define BY2PTEG 64 /* bytes per pte group */
- #define MAXMACH 1 /* max # cpus system can run */
- #define MACHSIZE BY2PG
- #define KSTACK 4096 /* Size of kernel stack */
- /*
- * Time
- */
- #define HZ 100 /* clock frequency */
- #define TK2SEC(t) ((t)/HZ) /* ticks to seconds */
- /*
- * Standard PPC Special Purpose Registers (OEA and VEA)
- */
- #define DSISR 18
- #define DAR 19 /* Data Address Register */
- #define DEC 22 /* Decrementer */
- #define SDR1 25
- #define SRR0 26 /* Saved Registers (exception) */
- #define SRR1 27
- #define SPRG0 272 /* Supervisor Private Registers */
- #define SPRG1 273
- #define SPRG2 274
- #define SPRG3 275
- #define ASR 280 /* Address Space Register */
- #define EAR 282 /* External Access Register (optional) */
- #define TBRU 269 /* Time base Upper/Lower (Reading) */
- #define TBRL 268
- #define TBWU 284 /* Time base Upper/Lower (Writing) */
- #define TBWL 285
- #define PVR 287 /* Processor Version */
- #define IABR 1010 /* Instruction Address Breakpoint Register (optional) */
- #define DABR 1013 /* Data Address Breakpoint Register (optional) */
- #define FPECR 1022 /* Floating-Point Exception Cause Register (optional) */
- #define PIR 1023 /* Processor Identification Register (optional) */
- #define IBATU(i) (528+2*(i)) /* Instruction BAT register (upper) */
- #define IBATL(i) (529+2*(i)) /* Instruction BAT register (lower) */
- #define DBATU(i) (536+2*(i)) /* Data BAT register (upper) */
- #define DBATL(i) (537+2*(i)) /* Data BAT register (lower) */
- /*
- * PPC604e-specific Special Purpose Registers (OEA)
- */
- #define HID0 1008 /* Hardware Implementation Dependant Register 0 */
- #define HID1 1009 /* Hardware Implementation Dependant Register 1 */
- #define PMC1 953 /* Performance Monitor Counter 1 */
- #define PMC2 954 /* Performance Monitor Counter 2 */
- #define PMC3 957 /* Performance Monitor Counter 3 */
- #define PMC4 958 /* Performance Monitor Counter 4 */
- #define MMCR0 952 /* Monitor Control Register 0 */
- #define MMCR1 956 /* Monitor Control Register 0 */
- #define SIA 955 /* Sampled Instruction Address */
- #define SDA 959 /* Sampled Data Address */
- #define BIT(i) (1<<(31-(i))) /* Silly backwards register bit numbering scheme */
- /*
- * Bit encodings for Machine State Register (MSR)
- */
- #define MSR_POW BIT(13) /* Enable Power Management */
- #define MSR_ILE BIT(15) /* Interrupt Little-Endian enable */
- #define MSR_EE BIT(16) /* External Interrupt enable */
- #define MSR_PR BIT(17) /* Supervisor/User privelege */
- #define MSR_FP BIT(18) /* Floating Point enable */
- #define MSR_ME BIT(19) /* Machine Check enable */
- #define MSR_FE0 BIT(20) /* Floating Exception mode 0 */
- #define MSR_SE BIT(21) /* Single Step (optional) */
- #define MSR_BE BIT(22) /* Branch Trace (optional) */
- #define MSR_FE1 BIT(23) /* Floating Exception mode 1 */
- #define MSR_IP BIT(25) /* Exception prefix 0x000/0xFFF */
- #define MSR_IR BIT(26) /* Instruction MMU enable */
- #define MSR_DR BIT(27) /* Data MMU enable */
- #define MSR_PM BIT(29) /* Performance Monitor marked mode (604e specific) */
- #define MSR_RI BIT(30) /* Recoverable Exception */
- #define MSR_LE BIT(31) /* Little-Endian enable */
- /*
- * Exception codes (trap vectors)
- */
- #define CRESET 0x01
- #define CMCHECK 0x02
- #define CDSI 0x03
- #define CISI 0x04
- #define CEI 0x05
- #define CALIGN 0x06
- #define CPROG 0x07
- #define CFPU 0x08
- #define CDEC 0x09
- #define CSYSCALL 0x0C
- #define CTRACE 0x0D /* optional */
- #define CFPA 0x0E /* optional */
- /* PPC604e-specific: */
- #define CPERF 0x0F /* performance monitoring */
- #define CIBREAK 0x13
- #define CSMI 0x14
- /*
- * Magic registers
- */
- #define MACH 30 /* R30 is m-> */
- #define USER 29 /* R29 is up-> */
- /*
- * virtual MMU
- */
- #define PTEMAPMEM (1024*1024)
- #define PTEPERTAB (PTEMAPMEM/BY2PG)
- #define SEGMAPSIZE 1984
- #define SSEGMAPSIZE 16
- #define PPN(x) ((x)&~(BY2PG-1))
- /*
- * First pte word
- */
- #define PTE0(v, vsid, h, va) (((v)<<31)|((vsid)<<7)|((h)<<6)|(((va)>>22)&0x3f))
- /*
- * Second pte word; WIMG & PP(RW/RO) common to page table and BATs
- */
- #define PTE1_W BIT(25)
- #define PTE1_I BIT(26)
- #define PTE1_M BIT(27)
- #define PTE1_G BIT(28)
- #define PTE1_RW BIT(30)
- #define PTE1_RO BIT(31)
- /*
- * PTE bits for fault.c. These belong to the second PTE word. Validity is
- * implied for putmmu(), and we always set PTE0_V. PTEVALID is used
- * here to set cache policy bits on a global basis.
- */
- #define PTEVALID 0
- #define PTEWRITE PTE1_RW
- #define PTERONLY PTE1_RO
- #define PTEUNCACHED PTE1_I
- /*
- * Address spaces
- */
- #define UZERO 0 /* base of user address space */
- #define UTZERO (UZERO+BY2PG) /* first address in user text */
- #define USTKTOP (TSTKTOP-TSTKSIZ*BY2PG) /* byte just beyond user stack */
- #define TSTKTOP KZERO /* top of temporary stack */
- #define TSTKSIZ 100
- #define KZERO 0x80000000 /* base of kernel address space */
- #define KTZERO (KZERO+0x4000) /* first address in kernel text */
- #define USTKSIZE (4*1024*1024) /* size of user stack */
- #define UREGSIZE ((8+32)*4)
- #define PCIMEM0 0xf0000000
- #define PCISIZE0 0x0e000000
- #define PCIMEM1 0xc0000000
- #define PCISIZE1 0x30000000
- #define IOMEM 0xfe000000
- #define IOSIZE 0x00800000
- #define FALCON 0xfef80000
- #define RAVEN 0xfeff0000
- #define FLASHA 0xff000000
- #define FLASHB 0xff800000
- #define FLASHAorB 0xfff00000
- #define isphys(x) (((ulong)x&KZERO)!=0)
- #define getpgcolor(a) 0
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