20060303

1 files changed, 200 insertions, 0 deletions

diff --git a/os/cerf1110/mem.h b/os/cerf1110/mem.h
new file mode 100644
index 00000000..19d55b07
--- /dev/null
+++ b/os/cerf1110/mem.h
@@ -0,0 +1,200 @@
+/*
+ * 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 BIT(n)		(1<<n)
+#define BITS(a,b)	((1<<(b+1))-(1<<a))
+
+#define	MAXMACH		1			/* max # cpus system can run */
+
+/*
+ * Time
+ */
+#define	HZ		(100)			/* clock frequency */
+#define	MS2HZ		(1000/HZ)		/* millisec per clock tick */
+#define	TK2SEC(t)	((t)/HZ)		/* ticks to seconds */
+#define	MS2TK(t)	((t)/MS2HZ)		/* milliseconds to ticks */
+
+/*
+ * More accurate time
+ */
+#define CLOCKFREQ	3686400
+#define MS2TMR(t)	((ulong)(((uvlong)(t)*CLOCKFREQ)/1000))
+#define US2TMR(t)	((ulong)(((uvlong)(t)*CLOCKFREQ)/1000000))
+
+/*
+ *  Address spaces
+ *	nearly everything maps 1-1 with physical addresses
+ *	0 to 1Mb is not mapped
+ *	cache strategy varies as needed (see mmu.c)
+ */
+
+#define KZERO		0xC0000000
+#define MACHADDR	(KZERO+0x00001000)
+#define KTTB		(KZERO+0x00004000)
+#define KTZERO	(KZERO+0x00008010)
+#define KSTACK	8192			/* Size of kernel stack */
+#define FLASHMEM	0x50000000	/* map flash at phys 0 to otherwise unused virtual space */
+#define FLUSHMEM	0xE0000000	/* internally decoded zero memory (for cache flushing) */
+#define DCFADDR	FLUSHMEM	/* cached and buffered for cache writeback */
+#define MCFADDR	(FLUSHMEM+(1<<20))	/* cached and unbuffered for minicache writeback */
+#define UCDRAMZERO	0xC8000000	/* base of memory doubly-mapped as uncached */
+#define AIVECADDR	0xFFFF0000	/* alternative interrupt vector address (other is 0) */
+
+/*
+ * Physical addresses
+ */
+#define PHYSFLASH0	0x00000000	/* flash (chip select 0) */
+#define PHYSCS1		0x08000000	/* static chip select 1 */
+#define PHYSCS2		0x10000000	/* static chip select 2 */
+#define PHYSCS3		0x18000000	/* static chip select 3 */
+#define PHYSPCMCIA0	0x20000000	/* PCMCIA socket 0 space */
+#define PHYSPCMCIA1	0x30000000	/* PCMCIA socket 1 space */
+#define PCMCIASIZE		0x10000000	/* they're both huge */
+#define PHYSCS4		0x40000000	/* static chip select 4 */
+#define PHYSCS5		0x48000000	/* static chip select 5 */
+#define PHYSSERIAL(n)	(0x80000000+0x10000*(n))	/* serial devices */
+#define PHYSUSB		0x80000000
+#define PHYSGPCLK		0x80020060
+#define PHYSMCP		0x80060000
+#define PHYSSSP		0x80070060
+#define PHYSOSTMR		0x90000000	/* timers */
+#define PHYSRTC		0x90010000	/* real time clock */
+#define PHYSPOWER		0x90020000	/* power management registers */
+#define PHYSRESET		0x90030000	/* reset controller */
+#define PHYSGPIO		0x90040000
+#define PHYSINTR		0x90050000	/* interrupt controller */
+#define PHYSPPC		0x90060000	/* peripheral pin controller */
+#define PHYSMEMCFG	0xA0000000	/* memory configuration */
+#define PHYSDMA		0xB0000000	/* DMA controller */
+#define PHYSLCD		0xB0100000	/* LCD controller */
+#define PHYSMEM0		0xC0000000
+#define PHYSFLUSH0	0xE0000000	/* internally decoded, for cache flushing */
+
+/*
+ * Memory Interface Control Registers
+ */
+#define 	MDCNFG	(PHYSMEMCFG)	/* memory controller configuration */
+#define	MDCAS0	(PHYSMEMCFG+4)
+#define	MDCAS1	(PHYSMEMCFG+8)
+#define	MDCAS2	(PHYSMEMCFG+0xC)
+#define	MSC0	(PHYSMEMCFG+0x10)
+#define	MSC1	(PHYSMEMCFG+0x14)
+#define	MSC2	(PHYSMEMCFG+0x2C)	/* SA1110, but not SA1100 */
+
+#define	MSCx(RRR, RDN, RDF, RBW, RT)	((((RRR)&0x7)<<13)|(((RDN)&0x1F)<<8)|(((RDF)&0x1F)<<3)|(((RBW)&1)<<2)|((RT)&3))
+
+#define	CACHELINELOG	5
+#define	CACHELINESZ	(1<<CACHELINELOG)
+
+/*
+ * PSR
+ */
+#define PsrMusr		0x10 	/* mode */
+#define PsrMfiq		0x11 
+#define PsrMirq		0x12
+#define PsrMsvc		0x13
+#define PsrMabt		0x17
+#define PsrMund		0x1B
+#define PsrMsys		0x1F
+#define PsrMask		0x1F
+
+#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 */
+
+/*
+ * Internal MMU coprocessor registers
+ */
+#define CpCPUID	0		/* R: */
+#define CpControl	1		/* R/W: */
+#define CpTTB		2		/* R/W: translation table base */
+#define CpDAC		3		/* R/W: domain access control */
+#define CpFSR		5		/* R/W: fault status */
+#define CpFAR		6		/* R/W: fault address */
+#define CpCacheCtl	7		/* W: */
+#define CpTLBops	8		/* W: TLB operations */
+#define CpRBops	9		/* W: Read Buffer operations */
+#define CpPID		13		/* R/W: Process ID Virtual Mapping */
+#define CpDebug	14		/* R/W: debug registers */
+#define CpTest		15		/* W: Test, Clock and Idle Control */
+
+/*
+ * Coprocessors
+ */
+#define CpMMU		15
+#define CpPWR		15
+
+/*
+ * CpControl bits
+ */
+#define CpCmmu	0x00000001	/* M: MMU enable */
+#define CpCalign	0x00000002	/* A: alignment fault enable */
+#define CpCDcache	0x00000004	/* C: instruction/data cache on */
+#define CpCwb		0x00000008	/* W: write buffer turned on */
+#define CpCi32		0x00000010	/* P: 32-bit programme 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 CpCaltivec	0x00002000	/* X: alternative interrupt vectors */
+
+/*
+ * MMU
+ */
+/*
+ * Small pages:
+ *	L1: 12-bit index -> 4096 descriptors -> 16Kb
+ *	L2:  8-bit index ->  256 descriptors ->  1Kb
+ * Each L2 descriptor has access permissions for 4 1Kb sub-pages.
+ *
+ *	TTB + L1Tx gives address of L1 descriptor
+ *	L1 descriptor gives PTBA
+ *	PTBA + L2Tx gives address of L2 descriptor
+ *	L2 descriptor gives PBA
+ */
+#define MmuSection	(1<<20)
+#define MmuLargePage	(1<<16)
+#define MmuSmallPage	(1<<12)
+#define MmuTTB(pa)	((pa) & ~0x3FFF)	/* translation table base */
+#define MmuL1x(pa)	(((pa)>>20) & 0xFFF)	/* L1 table index */
+#define MmuPTBA(pa)	((pa) & ~0x3FF)		/* page table base address */
+#define MmuL2x(pa)	(((pa)>>12) & 0xFF)	/* L2 table index */
+#define MmuPBA(pa)	((pa) & ~0xFFF)		/* page base address */
+#define MmuSBA(pa)	((pa) & ~0xFFFFF)	/* section base address */
+
+#define MmuL1type	0x03
+#define MmuL1page	0x01			/* descriptor is for L2 pages */
+#define MmuL1section	0x02			/* descriptor is for section */
+
+#define MmuL2invalid	0x000
+#define MmuL2large	0x001			/* large */
+#define MmuL2small	0x002			/* small */
+#define MmuWB		0x004			/* data goes through write buffer */
+#define MmuIDC		0x008			/* data placed in cache */
+
+#define MmuDAC(d)	(((d) & 0xF)<<5)	/* L1 domain */
+#define MmuAP(i, v)	((v)<<(((i)*2)+4))	/* access permissions */
+#define MmuL1AP(v)	MmuAP(3, (v))
+#define MmuL2AP(v)	MmuAP(3, (v))|MmuAP(2, (v))|MmuAP(1, (v))|MmuAP(0, (v))
+#define MmuAPsro	0			/* supervisor ro if S|R */
+#define MmuAPsrw	1			/* supervisor rw */
+#define MmuAPuro	2			/* supervisor rw + user ro */
+#define MmuAPurw	3			/* supervisor rw + user rw */