ref: f7a16b5e2cc38aed7985b0144bb2655d14ea6f5a
dir: /sys/src/boot/bitsy/mem.h/
/* * 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 double word */ #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 BLOCKALIGN 8 #define MAXMACH 1 /* max # cpus system can run */ /* * Time */ #define HZ (20) /* clock frequency */ #define MS2HZ (1000/HZ) /* millisec per clock tick */ #define TK2SEC(t) ((t)/HZ) /* ticks to seconds */ #define TK2MS(t) ((((ulong)(t))*1000)/HZ) /* ticks to milliseconds */ #define MS2TK(t) ((((ulong)(t))*HZ)/1000) /* milliseconds to ticks */ /* * Virtual addresses: * * We direct map all discovered DRAM and the area twixt 0xe0000000 and * 0xe8000000 used to provide zeros for cache flushing. * * Flash is mapped to 0xb0000000 and special registers are mapped * on demand to areas starting at 0xa0000000. * * The direct mapping is convenient but not necessary. It means * that we don't have to turn on the MMU till well into the * kernel. This can be changed by providing a mapping in l.s * before calling main. */ #define UZERO 0 /* base of user address space */ #define UTZERO (UZERO+BY2PG) /* first address in user text */ #define KZERO 0xC0000000 /* base of kernel address space */ #define KTZERO 0xC0008000 /* first address in kernel text */ #define EMEMZERO 0x90000000 /* 256 meg for add on memory */ #define EMEMTOP 0xA0000000 /* ... */ #define REGZERO 0xA0000000 /* 128 meg for mapspecial regs */ #define REGTOP 0xA8000000 /* ... */ #define FLASHZERO 0xB0000000 /* 128 meg for flash */ #define FLASHTOP 0xB8000000 /* ... */ #define DRAMZERO 0xC0000000 /* 128 meg for dram */ #define DRAMTOP 0xC8000000 /* ... */ #define UCDRAMZERO 0xC8000000 /* 128 meg for dram (uncached/unbuffered) */ #define UCDRAMTOP 0xD0000000 /* ... */ #define NULLZERO 0xE0000000 /* 128 meg for cache flush zeroes */ #define NULLTOP 0xE8000000 /* ... */ #define USTKTOP 0x2000000 /* byte just beyond user stack */ #define USTKSIZE (8*1024*1024) /* size of user stack */ #define TSTKTOP (USTKTOP-USTKSIZE) /* end of new stack in sysexec */ #define TSTKSIZ 100 #define MACHADDR (KZERO+0x00001000) #define EVECTORS 0xFFFF0000 /* virt base of exception vectors */ #define KSTACK (16*1024) /* Size of kernel stack */ /* * Offsets into flash */ #define Flash_bootldr (FLASHZERO+0x0) /* boot loader */ #define Flash_kernel (FLASHZERO+0x10000) /* boot kernel */ #define Flash_tar (FLASHZERO+0x100000) /* tar file containing fs.sac */ /* * virtual MMU */ #define PTEMAPMEM (1024*1024) #define PTEPERTAB (PTEMAPMEM/BY2PG) #define SEGMAPSIZE 1984 #define SSEGMAPSIZE 16 #define PPN(x) ((x)&~(BY2PG-1)) /* * SA1110 definitions */ /* * memory physical addresses */ #define PHYSFLASH0 0x00000000 #define PHYSDRAM0 0xC0000000 #define PHYSNULL0 0xE0000000 /* * peripheral control module physical addresses */ #define USBREGS 0x80000000 /* serial port 0 - USB */ #define UART1REGS 0x80010000 /* serial port 1 - UART */ #define GPCLKREGS 0x80020060 /* serial port 1 - general purpose clock */ #define UART2REGS 0x80030000 /* serial port 2 - low speed IR */ #define HSSPREGS 0x80040060 /* serial port 2 - high speed IR */ #define UART3REGS 0x80050000 /* serial port 3 - RS232 UART */ #define MCPREGS 0x80060000 /* serial port 4 - multimedia comm port */ #define SSPREGS 0x80070060 /* serial port 4 - synchronous serial port */ #define OSTIMERREGS 0x90000000 /* operating system timer registers */ #define POWERREGS 0x90020000 /* power management */ #define GPIOREGS 0x90040000 /* 28 general purpose IO pins */ #define INTRREGS 0x90050000 /* interrupt registers */ #define PPCREGS 0x90060000 /* peripheral pin controller */ #define MEMCONFREGS 0xA0000000 /* memory configuration */ #define LCDREGS 0xB0100000 /* display */ /* * PCMCIA addresses */ #define PHYSPCM0REGS 0x20000000 #define PYHSPCM0ATTR 0x28000000 #define PYHSPCM0MEM 0x2C000000 #define PHYSPCM1REGS 0x30000000 #define PYHSPCM1ATTR 0x38000000 #define PYHSPCM1MEM 0x3C000000 /* * Program Status Registers */ #define PsrMusr 0x00000010 /* mode */ #define PsrMfiq 0x00000011 #define PsrMirq 0x00000012 #define PsrMsvc 0x00000013 #define PsrMabt 0x00000017 #define PsrMund 0x0000001B #define PsrMask 0x0000001F #define PsrDfiq 0x00000040 /* disable FIQ interrupts */ #define PsrDirq 0x00000080 /* disable IRQ interrupts */ #define PsrV 0x10000000 /* overflow */ #define PsrC 0x20000000 /* carry/borrow/extend */ #define PsrZ 0x40000000 /* zero */ #define PsrN 0x80000000 /* negative/less than */ /* * Coprocessors */ #define CpMMU 15 #define CpPWR 15 /* * Internal MMU coprocessor registers */ #define CpCPUID 0 /* R: */ #define CpControl 1 /* R: */ #define CpTTB 2 /* RW: translation table base */ #define CpDAC 3 /* RW: domain access control */ #define CpFSR 5 /* RW: fault status */ #define CpFAR 6 /* RW: fault address */ #define CpCacheFlush 7 /* W: cache flushing, wb draining*/ #define CpTLBFlush 8 /* W: TLB flushing */ #define CpRBFlush 9 /* W: Read Buffer ops */ #define CpPID 13 /* RW: PID for virtual mapping */ #define CpBpt 14 /* W: Breakpoint register */ #define CpTest 15 /* W: Test, Clock and Idle Control */ /* * CpControl */ #define CpCmmuena 0x00000001 /* M: MMU enable */ #define CpCalign 0x00000002 /* A: alignment fault enable */ #define CpCdcache 0x00000004 /* C: data cache on */ #define CpCwb 0x00000008 /* W: write buffer turned on */ #define CpCi32 0x00000010 /* P: 32-bit program space */ #define CpCd32 0x00000020 /* D: 32-bit data space */ #define CpCbe 0x00000080 /* B: big-endian operation */ #define CpCsystem 0x00000100 /* S: system permission */ #define CpCrom 0x00000200 /* R: ROM permission */ #define CpCicache 0x00001000 /* I: instruction cache on */ #define CpCvivec 0x00002000 /* X: virtual interrupt vector adjust */ /* * fault codes */ #define FCterm 0x2 /* terminal */ #define FCvec 0x0 /* vector */ #define FCalignf 0x1 /* unaligned full word data access */ #define FCalignh 0x3 /* unaligned half word data access */ #define FCl1abort 0xc /* level 1 external abort on translation */ #define FCl2abort 0xe /* level 2 external abort on translation */ #define FCtransSec 0x5 /* section translation */ #define FCtransPage 0x7 /* page translation */ #define FCdomainSec 0x9 /* section domain */ #define FCdomainPage 0x11 /* page domain */ #define FCpermSec 0x9 /* section permissions */ #define FCpermPage 0x11 /* page permissions */ #define FCabortLFSec 0x4 /* external abort on linefetch for section */ #define FCabortLFPage 0x6 /* external abort on linefetch for page */ #define FCabortNLFSec 0x8 /* external abort on non-linefetch for section */ #define FCabortNLFPage 0xa /* external abort on non-linefetch for page */ /* * PTE bits used by fault.h. mmu.c translates them to real values. */ #define PTEVALID (1<<0) #define PTERONLY 0 /* this is implied by the absence of PTEWRITE */ #define PTEWRITE (1<<1) #define PTEUNCACHED (1<<2) #define PTEKERNEL (1<<3) /* no user access */ /* * H3650 specific definitions */ #define EGPIOREGS 0x49000000 /* Additional GPIO register */