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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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