Move existing boards into subdits split per arch

11 files changed, 0 insertions, 1755 deletions

diff --git a/os/fads/archfads.c b/os/fads/archfads.c
deleted file mode 100644
index 4ceb02a1..00000000
--- a/os/fads/archfads.c
+++ /dev/null
@@ -1,619 +0,0 @@
-#include	"u.h"
-#include	"../port/lib.h"
-#include	"mem.h"
-#include	"dat.h"
-#include	"fns.h"
-#include	"io.h"
-
-#include "../port/netif.h"
-#include "../mpc/etherif.h"
-#include "../port/flashif.h"
-
-#include	<draw.h>
-#include	<memdraw.h>
-#include	<cursor.h> 
-#include	"screen.h"
-
-#include	"archfads.h"
-
-/*
- * board-specific support for the 8xxFADS (including 860/21 development system)
- */
-
-enum {
-	/* CS assignment on FADS boards */
-	BOOTCS = 0,
-	BCSRCS = 1,
-	DRAM1 = 2,
-	DRAM2 = 3,
-	SDRAM = 4,
-
-	/* sccr */
-	RTSEL = IBIT(8),	/* =0, select main oscillator (OSCM); =1, select external crystal (EXTCLK) */
-	RTDIV = IBIT(7),	/* =0, divide by 4; =1, divide by 512 */
-	CRQEN = IBIT(9),	/* =1, switch to high frequency when CPM active */
-	PRQEN = IBIT(10),	/* =1, switch to high frequency when interrupt pending */
-
-	/* plprcr */
-	CSRC = IBIT(21),	/* =0, clock is DFNH; =1, clock is DFNL */
-};
-
-/*
- * called early in main.c, after machinit:
- * using board and architecture specific registers, initialise
- * 8xx registers that need it and complete initialisation of the Mach structure.
- */
-void
-archinit(void)
-{
-	IMM *io;
-	int mf;
-
-	m->bcsr = KADDR(PHYSBCSR);
-	m->bcsr[1] |= DisableRS232a | DisableIR | DisableEther | DisablePCMCIA | DisableRS232b;
-	m->bcsr[1] &= ~(DisableDRAM|DisableFlash);
-	m->bcsr[1] &= ~EnableSDRAM;
-	m->bcsr[4] &= ~EnableVideoClock;
-	m->bcsr[4] |= DisableVideoLamp;
-	io = m->iomem;	/* run by reset code: no need to lock */
-	if(1 || (io->sccr & RTDIV) != 0){
-		/* oscillator frequency can't be determined independently: check a switch */
-		if((m->bcsr[2]>>19)&(1<<2))
-			m->clockgen = 5*MHz;
-		else
-			m->clockgen = 4*MHz;
-	} else
-		m->clockgen = 32768;
-	m->oscclk = m->clockgen/MHz;	/* TO DO: 32k clock */
-	io->plprcrk = KEEP_ALIVE_KEY;
-	io->plprcr &= ~CSRC;	/* general system clock is DFNH */
-	mf = (io->plprcr >> 20)+1;	/* use timing set by bootstrap */
-	io->plprcrk = ~KEEP_ALIVE_KEY;
-	io->sccrk = KEEP_ALIVE_KEY;
-	io->sccr |= CRQEN | PRQEN;
-	io->sccr |= RTSEL;	/* select EXTCLK */
-	io->sccrk = ~KEEP_ALIVE_KEY;
-	m->cpuhz = m->clockgen*mf;
-	m->speed = m->cpuhz/MHz;
-}
-
-static ulong
-banksize(int x, ulong *pa)
-{
-	IMM *io;
-
-	io = m->iomem;
-	if((io->memc[x].base & 1) == 0)
-		return 0;	/* bank not valid */
-	*pa = io->memc[x].base & ~0x7FFF;
-	return -(io->memc[x].option&~0x7FFF);
-}
-
-/*
- * initialise the kernel's memory configuration:
- * there are two banks (base0, npage0) and (base1, npage1).
- * initialise any other values in conf that are board-specific.
- */
-void
-archconfinit(void)
-{
-	ulong nbytes, pa, ktop;
-
-	conf.nscc = 2;
-	conf.nocts2 = 1;	/* not connected on the FADS board */
-
-	conf.npage0 = 0;
-	if((m->bcsr[1] & DisableDRAM) == 0){
-		nbytes = banksize(DRAM1, &pa);
-		if(nbytes){
-			conf.npage0 = nbytes/BY2PG;
-			conf.base0 = pa;
-		}
-	}
-
-	conf.npage1 = 0;
-	if(m->bcsr[1] & EnableSDRAM){
-		nbytes = banksize(SDRAM, &pa);
-		if(nbytes){
-			conf.npage1 = nbytes/BY2PG;
-			conf.base1 = pa;
-		}
-	}
-
-	/* the following assumes the kernel text and/or data is in bank 0 */
-	ktop = PGROUND((ulong)end);
-	ktop = PADDR(ktop) - conf.base0;
-	conf.npage0 -= ktop/BY2PG;
-	conf.base0 += ktop;
-}
-
-static void
-archidprint(void)
-{
-	int f, i;
-	ulong v;
-
-	/* 8xx and FADS specific */
-	print("IMMR: ");
-	v = getimmr() & 0xFFFF;
-	switch(v>>8){
-	case 0x00:	print("MPC860/821"); break;
-	case 0x20:	print("MPC823"); break;
-	case 0x21:	print("MPC823A"); break;
-	default:	print("Type #%lux", v>>8); break;
-	}
-	print(", mask #%lux\n", v&0xFF);
-	v = m->bcsr[3]>>16;
-	print("MPC8xxFADS rev %lud, DB: ", ((v>>4)&8)|((v>>1)&4)|(v&3));
-	f = (v>>8)&0x3F;
-	switch(f){
-	default:	print("ID#%x", f); break;
-	case 0x00:	print("MPC860/821"); break;
-	case 0x01:	print("MPC813"); break;
-	case 0x02:	print("MPC821"); break;
-	case 0x03:	print("MPC823"); break;
-	case 0x20:	print("MPC801"); break;
-	case 0x21:	print("MPC850"); break;
-	case 0x22:	print("MPC860"); break;
-	case 0x23:	print("MPC860SAR"); break;
-	case 0x24:	print("MPC860T"); break;
-	}
-	print("ADS, rev #%lux\n", (m->bcsr[2]>>16)&7);
-	for(i=0; i<=4; i++)
-		print("BCSR%d: %8.8lux\n", i, m->bcsr[i]);
-	v = m->bcsr[2];
-	f = (v>>28)&0xF;
-	switch(f){
-	default:	print("Unknown"); break;
-	case 4:	print("SM732A2000/SM73228 - 8M SIMM"); break;
-	case 5:	print("SM732A1000A/SM73218 - 4M SIMM"); break;
-	case 6:	print("MCM29080 - 8M SIMM"); break;
-	case 7:	print("MCM29040 - 4M SIMM"); break;
-	case 8:	print("MCM29020 - 2M SIMM"); break;
-	}
-	switch((m->bcsr[3]>>20)&7){
-	default:	i = 0; break;
-	case 1:	i = 150; break;
-	case 2:	i = 120; break;
-	case 3:	i = 90; break;
-	}
-	print(" flash, %dns\n", i);
-	f = (v>>23)&0xF;
-	switch(f&3){
-	case 0:	i = 4; break;
-	case 1:	i = 32; break;
-	case 2:	i = 16; break;
-	case 3:	i = 8; break;
-	}
-	print("%dM SIMM, ", i);
-	switch(f>>2){
-	default: 	i = 0; break;
-	case 2:	i = 70; break;
-	case 3:	i = 60; break;
-	}
-	print("%dns\n", i);
-	print("options: #%lux\n", (m->bcsr[2]>>19)&0xF);
-	print("plprcr=%8.8lux sccr=%8.8lux\n", m->iomem->plprcr, m->iomem->sccr);
-}
-
-void
-cpuidprint(void)
-{
-	print("PVR: ");
-	switch(m->cputype){
-	case 0x01:	print("MPC601"); break;
-	case 0x03:	print("MPC603"); break;
-	case 0x04:	print("MPC604"); break;
-	case 0x06:	print("MPC603e"); break;
-	case 0x07:	print("MPC603e-v7"); break;
-	case 0x50:	print("MPC8xx"); break;
-	default:	print("PowerPC version #%x", m->cputype); break;
-	}
-	print(", revision #%lux\n", getpvr()&0xffff);
-	archidprint();
-	print("%lud MHz system\n", m->cpuhz/MHz);
-	print("\n");
-}
-
-/*
- * provide value for #r/switch (devrtc.c)
- */
-int
-archoptionsw(void)
-{
-	return (m->bcsr[2]>>19)&0xF;	/* value of switch DS1 */
-}
-
-/*
- * invoked by clock.c:/^clockintr
- */
-static void
-twinkle(void)
-{
-	if(m->ticks%MS2TK(1000) == 0)
-		m->bcsr[4] ^= DisableLamp;
-}
-
-void	(*archclocktick)(void) = twinkle;
-
-/*
- * invoked by ../port/taslock.c:/^ilock:
- * reset watchdog timer here, if there is one and it is enabled
- * (qboot currently disables it on the FADS board)
- */
-void
-clockcheck(void)
-{
-}
-
-/*
- * for devflash.c:/^flashreset
- * retrieve flash type, virtual base and length and return 0;
- * return -1 on error (no flash)
- */
-int
-archflashreset(int bank, Flash *f)
-{
-	char *t;
-	int mbyte;
-
-	if(bank != 0)
-		return -1;
-	switch((m->bcsr[2]>>28)&0xF){
-	default:	return -1;	/* unknown or not there */
-	case 4:	mbyte=8; t = "SM732x8"; break;
-	case 5:	mbyte=4; t = "SM732x8"; break;
-	case 6:	mbyte=8; t = "AMD29F0x0"; break;
-	case 7:	mbyte=4; t = "AMD29F0x0"; break;
-	case 8:	mbyte=2; t = "AMD29F0x0"; break;
-	}
-	f->type = t;
-	f->addr = KADDR(PHYSFLASH);
-	f->size = mbyte*1024*1024;
-	f->width = 4;
-	f->interleave = 3;
-	return 0;
-}
-
-void
-archflashwp(Flash*, int)
-{
-}
-
-int
-archether(int ctlrno, Ether *ether)
-{
-	if(isaconfig("ether", ctlrno, ether) == 0)
-		return -1;
-	return 1;
-}
-
-/*
- * enable the clocks for the given SCC ether and reveal them to the caller.
- * do anything else required to prepare the transceiver (eg, set full-duplex, reset loopback).
- */
-int
-archetherenable(int cpmid, int *rcs, int *tcs, int mbps, int fullduplex)
-{
-	IMM *io;
-
-	USED(mbps, fullduplex);	/* TO DO */
-	switch(cpmid){
-	default:
-		/* no other SCCs are wired on the FADS board */
-		return -1;
-
-	case CPscc2:	/* assume 8xxFADS board with 823DABS */
-		io = ioplock();
-		m->bcsr[1] |= DisableIR|DisableRS232b;
-		m->bcsr[1] &= ~DisableEther;
-		io->papar |= SIBIT(6)|SIBIT(5);	/* enable CLK2 and CLK3 */
-		io->padir &= ~(SIBIT(6)|SIBIT(5));
-		/* ETHLOOP etc reset in BCSR elsewhere */
-		iopunlock();
-		*rcs = CLK2;
-		*tcs = CLK3;
-		break;
-
-	case CPscc1:	/* assume 860/21 development board */
-		io = ioplock();
-		m->bcsr[1] |= DisableIR|DisableRS232b;	/* TO DO: might not be shared with RS232b */
-		m->bcsr[1] &= ~DisableEther;
-		io->papar |= SIBIT(6)|SIBIT(7);	/* enable CLK2 and CLK1 */
-		io->padir &= ~(SIBIT(6)|SIBIT(7));
-
-		/* settings peculiar to 860/821 development board */
-		io->pcpar &= ~(SIBIT(4)|SIBIT(5)|SIBIT(6));	/* ETHLOOP, TPFULDL~, TPSQEL~ */
-		io->pcdir |= SIBIT(4)|SIBIT(5)|SIBIT(6);
-		io->pcdat &= ~SIBIT(4);
-		io->pcdat |= SIBIT(5)|SIBIT(6);
-		iopunlock();
-		*rcs = CLK2;
-		*tcs = CLK1;
-		break;
-	}
-	return 0;
-}
-
-/*
- * do anything extra required to enable the UART on the given CPM port
- */
-void
-archenableuart(int id, int irda)
-{
-	switch(id){
-	case CPsmc1:
-		m->bcsr[1] &= ~DisableRS232a;
-		break;
-	case CPscc2:
-		m->bcsr[1] |= DisableEther|DisableIR|DisableRS232b;
-		if(irda)
-			m->bcsr[1] &= ~DisableIR;
-		else
-			m->bcsr[1] &= ~DisableRS232b;
-		break;
-	default:
-		/* nothing special */
-		break;
-	}
-}
-
-/*
- * do anything extra required to disable the UART on the given CPM port
- */
-void
-archdisableuart(int id)
-{
-	switch(id){
-	case CPsmc1:
-		m->bcsr[1] |= DisableRS232a;
-		break;
-	case CPscc2:
-		m->bcsr[1] |= DisableIR|DisableRS232b;
-		break;
-	default:
-		/* nothing special */
-		break;
-	}
-}
-
-/*
- * enable the external USB transceiver
- *	speed is 12MHz if highspeed is non-zero; 1.5MHz if zero
- *	master is non-zero if the node is acting as USB Host and should provide power
- */
-void
-archenableusb(int highspeed, int master)
-{
-	if(highspeed)
-		m->bcsr[4] |= USBFullSpeed;
-	else
-		m->bcsr[4] &= ~USBFullSpeed;
-	if(master)
-		m->bcsr[4] &= ~DisableUSBVcc;
-	else
-		m->bcsr[4] |= DisableUSBVcc;
-	eieio();
-	m->bcsr[4] &= ~DisableUSB;
-}
-
-/*
- * shut down the USB transceiver
- */
-void
-archdisableusb(void)
-{
-	m->bcsr[4] |= DisableUSBVcc | DisableUSB;
-}
-
-/*
- * set the external infrared transceiver to the given speed
- */
-void
-archsetirxcvr(int highspeed)
-{
-	if(!highspeed){
-		/* force low edge after enable to put TFDS6000 xcvr in low-speed mode (see 4.9.2.1 in FADS manual) */
-		m->bcsr[1] |= DisableIR;
-		microdelay(2);
-	}
-	m->bcsr[1] &= ~DisableIR;
-}
-
-/*
- * force hardware reset/reboot
- */
-void
-archreboot(void)
-{
-	IMM *io;
-
-	io = m->iomem;
-	io->plprcrk = KEEP_ALIVE_KEY;
-	io->plprcr |= 1<<7;	/* checkstop reset enable */
-	io->plprcrk = ~KEEP_ALIVE_KEY;
-	m->iomem->padat &= ~SIBIT(4);	/* drop backlight */
-	eieio();
-	io->sdcr = 1;
-	eieio();
-	io->lccr = 0;
-	eieio();
-	firmware(0);
-}
-
-/*
- * board-specific PCMCIA support: assumes slot B on 82xFADS
- */
-
-int
-pcmslotavail(int slotno)
-{
-	return slotno == 1;
-}
-
-void
-pcmenable(void)
-{
-	ioplock();
-	m->bcsr[1] = (m->bcsr[1] | PCCVPPHiZ) & ~PCCVPP5V;
-	m->bcsr[1] |= PCCVCC0V;
-	m->bcsr[1] &= ~DisablePCMCIA;
-	m->bcsr[1] &= ~PCCVCC5V;	/* apply Vcc */
-	iopunlock();
-}
-
-int
-pcmpowered(int)
-{
-	ulong r;
-
-	r = ~m->bcsr[1]&PCCVCCMask;	/* active low */
-	if(r == PCCVCC5V)
-		return 5;
-	if(r == PCCVCC3V)
-		return 3;
-	return 0;
-}
-
-void
-pcmsetvcc(int, int v)
-{
-	if(v == 5)
-		v = PCCVCC5V;
-	else if(v == 3)
-		v = PCCVCC3V;
-	else
-		v = 0;
-	ioplock();
-	m->bcsr[1] = (m->bcsr[1] | PCCVCCMask) & ~v;	/* active low */
-	iopunlock();
-}
-
-void
-pcmsetvpp(int, int v)
-{
-	if(v == 5)
-		v = PCCVPP5V;
-	else if(v == 12)
-		v = PCCVPP12V;
-	else if(v == 0)
-		v = PCCVPP0V;
-	else
-		v = 0;	/* Hi-Z */
-	ioplock();
-	m->bcsr[1] = (m->bcsr[1] | PCCVPPHiZ) & ~v;	/* active low */
-	iopunlock();
-}
-
-void
-pcmpower(int slotno, int on)
-{
-	if(!on){
-		pcmsetvcc(slotno, 0);	/* turn off card power */
-		pcmsetvpp(slotno, -1);	/* turn off programming voltage (Hi-Z) */
-	}else
-		pcmsetvcc(slotno, 5);
-}
-
-/*
- * enable/disable the LCD panel's backlight via
- * York touch panel interface (does no harm without it)
- */
-void
-archbacklight(int on)
-{
-	IMM *io;
-
-	delay(2);
-	io = ioplock();
-	io->papar &= ~SIBIT(4);
-	io->padir |= SIBIT(4);
-	if(on)
-		io->padat |= SIBIT(4);
-	else
-		io->padat &= ~SIBIT(4);
-	iopunlock();
-}
-
-/*
- * set parameters to describe the screen
- */
-int
-archlcdmode(Mode *m)
-{
-	m->x = 640;
-	m->y = 480;
-	m->d = 3;
-	m->lcd.freq = 25000000;
-	m->lcd.ac = 0;
-	m->lcd.vpw = 2;
-	m->lcd.wbf = 34;
-	m->lcd.wbl = 106;
-	m->lcd.flags = IsColour | IsTFT | OELow | HsyncLow | VsyncLow;
-	m->lcd.notpdpar = SIBIT(6);
-	return 0;
-}
-
-/*
- * reset 823 video port for devvid.c
- */
-void
-archresetvideo(void)
-{
-	ioplock();
-	m->bcsr[4] &= ~DisableVideoLamp;
-	m->bcsr[4] |= EnableVideoPort;
-	eieio();
-	m->bcsr[4] &= ~EnableVideoPort;	/* falling edge to reset */
-	iopunlock();
-	delay(6);
-	ioplock();
-	m->bcsr[4] |= EnableVideoPort;
-	iopunlock();
-	delay(6);
-}
-
-/*
- * enable 823 video port and clock
- */
-void
-archenablevideo(void)
-{
-	ioplock();
-	m->bcsr[4] |= EnableVideoClock|EnableVideoPort;	/* enable AFTER pdpar/pddir to avoid damage */
-	iopunlock();
-}
-
-/*
- * disable 823 video port and clock
- */
-void
-archdisablevideo(void)
-{
-	ioplock();
-	m->bcsr[4] &= ~(EnableVideoClock|EnableVideoPort);
-	m->bcsr[4] |= DisableVideoLamp;
-	iopunlock();
-}
-
-/*
- * allocate a frame buffer for the video, aligned on 16 byte boundary
- */
-uchar*
-archvideobuffer(long nbytes)
-{
-	/* we shall use the on-board SDRAM if the kernel hasn't grabbed it */
-	if((m->bcsr[1] & EnableSDRAM) == 0){
-		m->bcsr[1] |= EnableSDRAM;
-		return KADDR(PHYSSDRAM);
-	}
-	return xspanalloc(nbytes, 16, 0);
-}
-
-/*
- * there isn't a hardware keyboard port
- */
-void
-archkbdinit(void)
-{
-}
diff --git a/os/fads/archfads.h b/os/fads/archfads.h
deleted file mode 100644
index a35230f9..00000000
--- a/os/fads/archfads.h
+++ /dev/null
@@ -1,33 +0,0 @@
-
-enum {
-	/* BCSR1 bits */
-	DisableFlash=	IBIT(0),
-	DisableDRAM=	IBIT(1),
-	DisableEther=	IBIT(2),
-	DisableIR=	IBIT(3),
-	DisableRS232a=	IBIT(7),
-	DisablePCMCIA=	IBIT(8),
-	PCCVCCMask=	IBIT(9)|IBIT(15),
-	PCCVPPMask=	IBIT(10)|IBIT(11),
-	DisableRS232b=	IBIT(13),
-	EnableSDRAM=	IBIT(14),
-
-	PCCVCC0V=	IBIT(15)|IBIT(9),
-	PCCVCC5V=	IBIT(9),	/* active low */
-	PCCVCC3V=	IBIT(15),	/* active low */
-	PCCVPP0V=	IBIT(10)|IBIT(11),	/* active low */
-	PCCVPP5V=	IBIT(10),	/* active low */
-	PCCVPP12V=	IBIT(11),	/* active low */
-	PCCVPPHiZ=	IBIT(10)|IBIT(11),
-
-	/* BCSR4 bits */
-	DisableTPDuplex=	IBIT(1),
-	DisableLamp=	IBIT(3),
-	DisableUSB=	IBIT(4),
-	USBFullSpeed=	IBIT(5),
-	DisableUSBVcc=	IBIT(6),
-	DisableVideoLamp=	IBIT(8),
-	EnableVideoClock=	IBIT(9),
-	EnableVideoPort=	IBIT(10),
-	DisableModem=	IBIT(11),
-};
diff --git a/os/fads/dat.h b/os/fads/dat.h
deleted file mode 100644
index 19d7c560..00000000
--- a/os/fads/dat.h
+++ /dev/null
@@ -1,162 +0,0 @@
-typedef struct Conf	Conf;
-typedef struct FPU	FPU;
-typedef struct FPenv	FPenv;
-typedef struct IMM	IMM;
-typedef struct Irqctl	Irqctl;
-typedef struct ISAConf	ISAConf;
-typedef struct Label	Label;
-typedef struct Lock	Lock;
-typedef struct Mach	Mach;
-typedef struct Map	Map;
-typedef struct Power Power;
-typedef struct RMap RMap;
-typedef struct Ureg	Ureg;
-
-typedef ulong Instr;
-
-#define	MACHP(n)	(n==0? &mach0 : *(Mach**)0)
-
-struct	Lock
-{
-	ulong	key;
-	ulong	pc;
-	ulong	sr;
-	int	pri;
-};
-
-struct	Label
-{
-	ulong	sp;
-	ulong	pc;
-};
-
-/*
- * Proc.fpstate
- */
-enum
-{
-	FPINIT,
-	FPACTIVE,
-	FPINACTIVE,
-};
-
-/*
- * This structure must agree with FPsave and FPrestore asm routines
- */
-struct FPenv
-{
-	union {
-		double	fpscrd;
-		struct {
-			ulong	pad;
-			ulong	fpscr;
-		};
-	};
-	int	fpistate;	/* emulated fp */
-	ulong	emreg[32][3];	/* emulated fp */
-};
-/*
- * This structure must agree with fpsave and fprestore asm routines
- */
-struct	FPU
-{
-	double	fpreg[32];
-	FPenv	env;
-};
-
-struct Conf
-{
-	ulong	nmach;		/* processors */
-	ulong	nproc;		/* processes */
-	ulong	npage0;		/* total physical pages of memory */
-	ulong	npage1;		/* total physical pages of memory */
-	ulong	npage;		/* total physical pages of memory */
-	ulong	base0;		/* base of bank 0 */
-	ulong	base1;		/* base of bank 1 */
-	ulong	ialloc;		/* max interrupt time allocation in bytes */
-
-	int	nscc;	/* number of SCCs implemented */
-	ulong	smcuarts;		/* bits for SMCs to define as eiaN */
-	ulong	sccuarts;		/* bits for SCCs to define as eiaN  */
-	int	nocts2;	/* CTS2 and CD2 aren't connected */
-	uchar*	nvrambase;	/* virtual address of nvram */
-	ulong	nvramsize;	/* size in bytes */
-};
-
-#include "../port/portdat.h"
-
-/*
- *  machine dependent definitions not used by ../port/dat.h
- */
-
-struct Mach
-{
-	/* OFFSETS OF THE FOLLOWING KNOWN BY l.s */
-	int	machno;			/* physical id of processor (unused) */
-	ulong	splpc;			/* pc of last caller to splhi (unused) */
-	int	mmask;			/* 1<<m->machno (unused) */
-
-	/* ordering from here on irrelevant */
-	ulong	ticks;			/* of the clock since boot time */
-	Proc	*proc;			/* current process on this processor */
-	Label	sched;			/* scheduler wakeup */
-	Lock	alarmlock;		/* access to alarm list */
-	void	*alarm;			/* alarms bound to this clock */
-	int	nrdy;
-	int	speed;	/* general system clock in MHz */
-	long	oscclk;	/* oscillator frequency (MHz) */
-	long	cpuhz;	/* general system clock (cycles) */
-	long	clockgen;	/* clock generator frequency (cycles) */
-	int	cputype;
-	ulong	delayloop;
-	ulong*	bcsr;
-	IMM*	iomem;	/* MPC8xx internal i/o control memory */
-
-	/* MUST BE LAST */
-	int	stack[1];
-};
-extern	Mach	mach0;
-
-
-/*
- *  a parsed .ini line
- */
-#define NISAOPT		8
-
-struct ISAConf {
-	char*	type;
-	ulong	port;
-	ulong	irq;
-	ulong	mem;
-	int	dma;
-	ulong	size;
-	ulong	freq;
-	uchar	bus;
-
-	int	nopt;
-	char*	opt[NISAOPT];
-};
-
-struct Map {
-	int	size;
-	ulong	addr;
-};
-
-struct RMap {
-	char*	name;
-	Map*	map;
-	Map*	mapend;
-
-	Lock;
-};
-
-struct Power {
-	Dev*	dev;
-	int	(*powerdown)(Power*);
-	int	(*powerup)(Power*);
-	int	state;
-	void*	arg;
-};
-
-extern register Mach	*m;
-extern register Proc	*up;
diff --git a/os/fads/fads b/os/fads/fads
deleted file mode 100644
index 4f84ddc6..00000000
--- a/os/fads/fads
+++ /dev/null
@@ -1,124 +0,0 @@
-# fads board with remote file system on ether or ppp
-dev
-	root
-	cons	archfads screen
-	env
-	mnt
-	pipe
-	prog
-	rtc
-	srv
-	dup
-	ssl
-	cap
-
-	draw
-	pointer
-
-	ip	bootp ip ipv6 ipaux iproute arp netlog ptclbsum iprouter plan9 nullmedium pktmedium
-	ether netif netaux
-	uart
-	flash
-#	usb
-	touch	spi
-#	pcmcia	cis
-#	ata	inb
-
-	ftl
-#	kfs		chk kcon console dat dentry fcall fs fswren iobuf kfs sub uid
-#	kprof
-
-#	vid	i2c
-	i2c	i2c
-
-ip
-	il
-	tcp
-	udp
-	ipifc
-	icmp
-	icmp6
-	ipmux
-
-lib
-	interp
-	tk
-	draw
-	memlayer
-	memdraw
-	keyring
-	sec
-	mp
-	math
-	kern
-
-link
-	etherscc
-	ethermedium
-	flashamd29f0x0
-#	pppmedium ppp compress
-
-mod
-	sys
-	draw
-	tk
-	math
-	keyring
-	crypt
-	ipints
-
-
-port
-	alarm
-	alloc
-	allocb
-	chan
-	dev
-	dial
-	dis
-	discall
-	exception
-	exportfs
-	inferno
-	latin1
-	nocache
-	nodynld
-	parse
-	pgrp
-	print
-	proc
-	qio
-	qlock
-	random
-	sysfile
-	taslock
-	xalloc
-
-code
-	int cflag = 0;
-	int consoleprint = 1;
-	int panicreset = 0;
-	int kernel_pool_pcnt = 10;
-	int main_pool_pcnt = 40;
-	int heap_pool_pcnt = 20;
-	int image_pool_pcnt = 40;
-
-init
-	mpcinit
-
-root
-	/chan
-	/dev
-	/dis
-	/env
-	/fd	/
-	/n
-	/net
-	/nvfs /
-	/prog
-	/icons
-	/osinit.dis
-	/dis/lib/auth.dis
-	/dis/lib/ssl.dis
-	/n/local /
-	/nvfs/default	/usr/inferno/keyring/default
diff --git a/os/fads/fns.h b/os/fads/fns.h
deleted file mode 100644
index c4892a82..00000000
--- a/os/fads/fns.h
+++ /dev/null
@@ -1,117 +0,0 @@
-#include "../port/portfns.h"
-
-void	addpower(Power*);
-void	archbacklight(int);
-void	archconfinit(void);
-void	archdisableuart(int);
-void	archdisableusb(void);
-void	archdisablevideo(void);
-void	archenableuart(int, int);
-void	archenableusb(int, int);
-void	archenablevideo(void);
-void	archkbdinit(void);
-void	archresetvideo(void);
-int	archetherenable(int, int*, int*, int, int);
-void	archinit(void);
-int	archoptionsw(void);
-void	archreboot(void);
-void	archsetirxcvr(int);
-uchar*	archvideobuffer(long);
-ulong	baudgen(int, int);
-int	brgalloc(void);
-void	brgfree(int);
-int	cistrcmp(char*, char*);
-int	cistrncmp(char*, char*, int);
-void	clockcheck(void);
-void	clockinit(void);
-void	clockintr(Ureg*);
-void	clrfptrap(void);
-#define	coherence()		/* nothing needed for uniprocessor */
-void	cpminit(void);
-void	cpuidprint(void);
-void	dcflush(void*, ulong);
-void	dcinval(void*, ulong);
-void	delay(int);
-void	dtlbmiss(void);
-void	dumplongs(char*, ulong*, int);
-void	dumpregs(Ureg*);
-void	eieio(void);
-void	faultpower(Ureg*);
-void	firmware(int);
-void	fpinit(void);
-int	fpipower(Ureg*);
-void	fpoff(void);
-void	fprestore(FPU*);
-void	fpsave(FPU*);
-ulong	fpstatus(void);
-char*	getconf(char*);
-ulong	getdar(void);
-ulong	getdec(void);
-ulong	getdepn(void);
-ulong	getdsisr(void);
-ulong	getimmr(void);
-ulong	getmsr(void);
-ulong	getpvr(void);
-ulong	gettbl(void);
-ulong	gettbu(void);
-void	gotopc(ulong);
-void	icflush(void*, ulong);
-void	idle(void);
-#define	idlehands()			/* nothing to do in the runproc */
-void	intr(Ureg*);
-void	intrenable(int, void (*)(Ureg*, void*), void*, int, char*);
-void	intrdisable(int, void (*)(Ureg*, void*), void*, int, char*);
-int	intrstats(char*, int);
-void	intrvec(void);
-int	isaconfig(char*, int, ISAConf*);
-int	isvalid_va(void*);
-void	itlbmiss(void);
-void	kbdinit(void);
-void	kbdreset(void);
-void	lcdpanel(int);
-void	links(void);
-void	mapfree(RMap*, ulong, int);
-void	mapinit(RMap*, Map*, int);
-void	mathinit(void);
-void	mmuinit(void);
-ulong*	mmuwalk(ulong*, ulong, int);
-void	pcmenable(void);
-void	pcmintrenable(int, void (*)(Ureg*, void*), void*);
-int	pcmpin(int slot, int type);
-void	pcmpower(int, int);
-int	pcmpowered(int);
-void	pcmsetvcc(int, int);
-void	pcmsetvpp(int, int);
-int	pcmslotsavail(int);
-void	procsave(Proc*);
-void	procsetup(Proc*);
-void	putdec(ulong);
-void	putmsr(ulong);
-void	puttwb(ulong);
-ulong	rmapalloc(RMap*, ulong, int, int);
-void	screeninit(void);
-int	screenprint(char*, ...);			/* debugging */
-void	screenputs(char*, int);
-int	segflush(void*, ulong);
-void	setpanic(void);
-long	spioutin(void*, long, void*);
-void	spireset(void);
-ulong	_tas(ulong*);
-void	trapinit(void);
-void	trapvec(void);
-void	uartinstall(void);
-void	uartspecial(int, int, Queue**, Queue**, int (*)(Queue*, int));
-void	uartwait(void);	/* debugging */
-void	videoreset(void);
-void	videotest(void);
-void	wbflush(void);
-
-#define	waserror()	(up->nerrlab++, setlabel(&up->errlab[up->nerrlab-1]))
-ulong	getcallerpc(void*);
-
-#define KADDR(a)	((void*)((ulong)(a)|KZERO))
-#define PADDR(a)	((((ulong)(a)&KSEGM)!=KSEG0)?(ulong)(a):((ulong)(a)&~KZERO))
-
-/* IBM bit field order */
-#define	IBIT(b)	((ulong)1<<(31-(b)))
-#define	SIBIT(n)	((ushort)1<<(15-(n)))
diff --git a/os/fads/io.h b/os/fads/io.h
deleted file mode 100644
index 30312c68..00000000
--- a/os/fads/io.h
+++ /dev/null
@@ -1 +0,0 @@
-#include "../mpc/800io.h"
diff --git a/os/fads/main.c b/os/fads/main.c
deleted file mode 100644
index 93ba7f95..00000000
--- a/os/fads/main.c
+++ /dev/null
@@ -1,392 +0,0 @@
-#include	"u.h"
-#include	"../port/lib.h"
-#include	"mem.h"
-#include	"dat.h"
-#include	"fns.h"
-#include	"io.h"
-#include	"ureg.h"
-#include "version.h"
-
-/* where b.com or qboot leaves configuration info */
-#define BOOTARGS	((char*)CONFADDR)
-#define	BOOTARGSLEN	1024
-#define	MAXCONF		32
-
-extern ulong kerndate;
-extern int cflag;
-int	remotedebug;
-
-extern int main_pool_pcnt;
-extern int heap_pool_pcnt;
-extern int image_pool_pcnt;
-
-char	bootargs[BOOTARGSLEN+1];
-char bootdisk[KNAMELEN];
-char *confname[MAXCONF];
-char *confval[MAXCONF];
-int nconf;
-
-extern void addconf(char *, char *);
-
-/*
- *  arguments passed to initcode and /boot
- */
-char argbuf[128];
-
-static void
-options(void)
-{
-	long i, n;
-	char *cp, *line[MAXCONF], *p, *q;
-
-	/*
-	 *  parse configuration args from bootstrap
-	 */
-	memmove(bootargs, BOOTARGS, BOOTARGSLEN);	/* where b.com leaves its config */
-	cp = bootargs;
-	cp[BOOTARGSLEN-1] = 0;
-
-	/*
-	 * Strip out '\r', change '\t' -> ' '.
-	 */
-	p = cp;
-	for(q = cp; *q; q++){
-		if(*q == '\r')
-			continue;
-		if(*q == '\t')
-			*q = ' ';
-		*p++ = *q;
-	}
-	*p = 0;
-
-	n = getfields(cp, line, MAXCONF, 1, "\n");
-	for(i = 0; i < n; i++){
-		if(*line[i] == '#')
-			continue;
-		cp = strchr(line[i], '=');
-		if(cp == 0)
-			continue;
-		*cp++ = 0;
-		confname[nconf] = line[i];
-		confval[nconf] = cp;
-		nconf++;
-	}
-}
-
-void
-doc(char *m)
-{
-	USED(m);
-	print("%s...\n", m); uartwait();
-}
-
-static void
-poolsizeinit(void)
-{
-	ulong nb;
-
-	nb = conf.npage*BY2PG;
-	poolsize(mainmem, (nb*main_pool_pcnt)/100, 0);
-	poolsize(heapmem, (nb*heap_pool_pcnt)/100, 0);
-	poolsize(imagmem, (nb*image_pool_pcnt)/100, 1);
-}
-
-static void
-serialconsole(void)
-{
-	char *p;
-	int port, baud;
-
-	p = getconf("console");
-	if(p == nil)
-		p = "0";
-	if(p != nil && !remotedebug){
-		port = strtol(p, nil, 0);
-		baud = 9600;
-		p = getconf("baud");
-		if(p != nil){
-			baud = strtol(p, nil, 0);
-			if(baud < 9600)
-				baud = 9600;
-		}
-		uartspecial(port, baud, &kbdq, &printq, kbdcr2nl);
-	}
-}
-
-void
-main(void)
-{
-	machinit();
-	options();
-	archinit();
-	quotefmtinstall();
-	confinit();
-	cpminit();
-	xinit();
-	poolsizeinit();
-	trapinit();
-	mmuinit();
-	printinit();
-	uartinstall();
-	serialconsole();
-	doc("screeninit");
-	screeninit();
-	doc("kbdinit");
-	kbdinit();
-	doc("clockinit");
-	clockinit();
-	doc("procinit");
-	procinit();
-	cpuidprint();
-	doc("links");
-	links();
-	doc("chandevreset");
-	chandevreset();
-
-	eve = strdup("inferno");
-
-	print("\nInferno %s\n", VERSION);
-	print("Vita Nuova\n");
-	print("conf %s (%lud) jit %d\n\n",conffile, kerndate, cflag);
-
-	doc("userinit");
-	userinit();
-	doc("schedinit");
-	schedinit();
-}
-
-void
-machinit(void)
-{
-	int n;
-
-	n = m->machno;
-	memset(m, 0, sizeof(Mach));
-	m->machno = n;
-	m->mmask = 1<<m->machno;
-	m->iomem = KADDR(getimmr() & ~0xFFFF);
-	m->cputype = getpvr()>>16;
-	m->delayloop = 20000;	/* initial estimate only; set by clockinit */
-	m->speed = 50;	/* initial estimate only; set by archinit */
-}
-
-void
-init0(void)
-{
-	Osenv *o;
-	int i;
-	char buf[2*KNAMELEN];
-
-	up->nerrlab = 0;
-
-	spllo();
-
-	if(waserror())
-		panic("init0");
-	/*
-	 * These are o.k. because rootinit is null.
-	 * Then early kproc's will have a root and dot.
-	 */
-	o = up->env;
-	o->pgrp->slash = namec("#/", Atodir, 0, 0);
-	cnameclose(o->pgrp->slash->name);
-	o->pgrp->slash->name = newcname("/");
-	o->pgrp->dot = cclone(o->pgrp->slash);
-
-	chandevinit();
-
-	if(!waserror()){
-		ksetenv("cputype", "power", 0);
-		snprint(buf, sizeof(buf), "power %s", conffile);
-		ksetenv("terminal", buf, 0);
-		poperror();
-	}
-	for(i = 0; i < nconf; i++)
-		if(confname[i][0] != '*'){
-			if(!waserror()){
-				ksetenv(confname[i], confval[i], 0);
-				poperror();
-			}
-		}
-
-	poperror();
-	disinit("/osinit.dis");
-}
-
-void
-userinit(void)
-{
-	Proc *p;
-	Osenv *o;
-
-	p = newproc();
-	o = p->env;
-
-	o->fgrp = newfgrp(nil);
-
-	o->pgrp = newpgrp();
-	o->egrp = newegrp();
-	kstrdup(&o->user, eve);
-
-	strcpy(p->text, "interp");
-
-	/*
-	 * Kernel Stack
-	 */
-	p->sched.pc = (ulong)init0;
-	p->sched.sp = (ulong)p->kstack+KSTACK;
-
-	ready(p);
-}
-
-Conf	conf;
-
-void
-addconf(char *name, char *val)
-{
-	if(nconf >= MAXCONF)
-		return;
-	confname[nconf] = name;
-	confval[nconf] = val;
-	nconf++;
-}
-
-char*
-getconf(char *name)
-{
-	int i;
-
-	for(i = 0; i < nconf; i++)
-		if(cistrcmp(confname[i], name) == 0)
-			return confval[i];
-	return 0;
-}
-
-void
-confinit(void)
-{
-	char *p;
-	int pcnt;
-
-	if(p = getconf("*kernelpercent"))
-		pcnt = 100 - strtol(p, 0, 0);
-	else
-		pcnt = 0;
-
-	conf.nscc = 4;
-	conf.smcuarts = 1<<0;	/* SMC1 (usual console) */
-	conf.sccuarts = 1<<1;	/* SCC2 available by default */
-
-	archconfinit();
-	
-	conf.npage = conf.npage0 + conf.npage1;
-	if(pcnt < 10)
-		pcnt = 70;
-	conf.ialloc = (((conf.npage*(100-pcnt))/100)/2)*BY2PG;
-
-	conf.nproc = 100 + ((conf.npage*BY2PG)/MB)*5;
-	conf.nmach = MAXMACH;
-}
-
-void
-exit(int ispanic)
-{
-	up = 0;
-	spllo();
-	print("cpu %d exiting\n", m->machno);
-
-	/* Shutdown running devices */
-	chandevshutdown();
-
-	delay(1000);
-	splhi();
-	if(ispanic)
-		for(;;);
-	archreboot();
-}
-
-void
-reboot(void)
-{
-	exit(0);
-}
-
-void
-halt(void)
-{
-	print("cpu halted\n");
-	microdelay(1000);
-	for(;;)
-		;
-}
-
-int
-isaconfig(char *class, int ctlrno, ISAConf *isa)
-{
-	char cc[KNAMELEN], *p;
-	int i;
-
-	snprint(cc, sizeof cc, "%s%d", class, ctlrno);
-	p = getconf(cc);
-	if(p == nil)
-		return 0;
-
-	isa->nopt = tokenize(p, isa->opt, NISAOPT);
-	for(i = 0; i < isa->nopt; i++){
-		p = isa->opt[i];
-		if(cistrncmp(p, "type=", 5) == 0)
-			isa->type = p + 5;
-		else if(cistrncmp(p, "port=", 5) == 0)
-			isa->port = strtoul(p+5, &p, 0);
-		else if(cistrncmp(p, "irq=", 4) == 0)
-			isa->irq = strtoul(p+4, &p, 0);
-		else if(cistrncmp(p, "mem=", 4) == 0)
-			isa->mem = strtoul(p+4, &p, 0);
-		else if(cistrncmp(p, "size=", 5) == 0)
-			isa->size = strtoul(p+5, &p, 0);
-		else if(cistrncmp(p, "freq=", 5) == 0)
-			isa->freq = strtoul(p+5, &p, 0);
-		else if(cistrncmp(p, "dma=", 4) == 0)
-			isa->dma = strtoul(p+4, &p, 0);
-	}
-	return 1;
-}
-
-/*
- *  Save the mach dependent part of the process state.
- */
-void
-procsave(Proc*)
-{
-}
-
-void
-uartputs(char *s, int n)
-{
-//	screenputs(buf, n);
-	putstrn(s, n);
-	uartwait();
-}
-
-/* stubs */
-void
-setfsr(ulong)
-{
-}
-
-ulong
-getfsr()
-{
-	return 0;
-}
-
-void
-setfcr(ulong)
-{
-}
-
-ulong
-getfcr()
-{
-	return 0;
-}
diff --git a/os/fads/mem.h b/os/fads/mem.h
deleted file mode 100644
index 02cf8f43..00000000
--- a/os/fads/mem.h
+++ /dev/null
@@ -1,157 +0,0 @@
-/*
- * 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	CACHELINELOG	4
-#define CACHELINESZ	(1<<CACHELINELOG)
-
-#define	MAXMACH		1			/* max # cpus system can run */
-#define	MACHSIZE	BY2PG
-
-/*
- * 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 */
-#define	MHz	1000000
-
-/*
- * MSR bits
- */
-
-#define	POW	0x40000	/* enable power mgmt */
-#define	TGPR	0x20000	/* GPR0-3 remapped; 603/603e specific */
-#define	ILE	0x10000	/* interrupts little endian */
-#define	EE	0x08000	/* enable external/decrementer interrupts */
-#define	PR	0x04000	/* =1, user mode */
-#define	FPE	0x02000	/* enable floating point */
-#define	ME	0x01000	/* enable machine check exceptions */
-#define	FE0	0x00800
-#define	SE	0x00400	/* single-step trace */
-#define	BE	0x00200	/* branch trace */
-#define	FE1	0x00100
-#define	MSR_IP	0x00040	/* =0, vector to nnnnn; =1, vector to FFFnnnnn */
-#define	IR	0x00020	/* enable instruction address translation */
-#define	DR	0x00010	/* enable data address translation */
-#define	RI	0x00002	/* exception is recoverable */
-#define	LE	0x00001	/* little endian mode */
-
-#define	KMSR	(ME|FE0|FE1|FPE)
-#define	UMSR	(KMSR|PR|EE|IR|DR)
-
-/*
- * Magic registers
- */
-
-#define	MACH		30		/* R30 is m-> */
-#define	USER		29		/* R29 is up-> */
-#define	IOMEMR		28		/* R28 will be iomem-> */
-
-/*
- * Fundamental addresses
- */
-
-#define	UREGSIZE	((8+32)*4)
-
-/*
- * MMU
- */
-
-/* L1 table entry and Mx_TWC flags */
-#define PTEVALID	(1<<0)
-#define PTEWT		(1<<1)	/* write through */
-#define PTE4K		(0<<2)
-#define PTE512K	(1<<2)
-#define PTE8MB	(3<<2)
-#define PTEG		(1<<4)	/* guarded */
-
-/* L2 table entry and Mx_RPN flags (also PTEVALID) */
-#define PTECI		(1<<1)	/*  cache inhibit */
-#define PTESH		(1<<2)	/* page is shared; ASID ignored */
-#define PTELPS		(1<<3)	/* large page size */
-#define PTEWRITE	0x9F0
-
-/* TLB and MxEPN flag */
-#define	TLBVALID	(1<<9)
-
-/*
- * Address spaces
- */
-
-#define	KUSEG	0x00000000
-#define KSEG0	0x20000000
-#define	KSEGM	0xE0000000	/* mask to check which seg */
-
-#define	KZERO	KSEG0			/* base of kernel address space */
-#define	KTZERO	(KZERO+0x3000)	/* first address in kernel text */
-#define	KSTACK	8192	/* Size of kernel stack */
-
-#define	CONFADDR	(KZERO|0x200000)	/* where qboot leaves configuration info */
-
-/*
- * 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
-#define	CFPA	0x0E
-/* rest are power-implementation dependent (8xx) */
-#define	CEMU	0x10
-#define	CIMISS	0x11
-#define	CDMISS	0x12
-#define	CITLBE	0x13
-#define	CDTLBE	0x14
-#define	CDBREAK	0x1C
-#define	CIBREAK	0x1D
-#define	CPBREAK	0x1E
-#define	CDPORT	0x1F
-
-/*
- * MPC8xx physical addresses
- */
-
-/* those encouraged by mpc8bug */
-#define	PHYSDRAM	0x00000000
-#define	PHYSBCSR	0x02100000
-#define	PHYSIMM	0x02200000
-#define	PHYSFLASH	0x02800000
-
-/* remaining ones are our choice */
-#define	PHYSSDRAM	0x03000000
-#define	PHYSPCMCIA	0x04000000
-#define	PCMCIALEN	(8*MB)	/* chosen to allow mapping by single TLB entry */
-#define	ISAIO	(KZERO|PHYSPCMCIA)	/* for inb.s */
-
-/*
- * MPC8xx dual-ported CPM memory physical addresses
- */
-#define	PHYSDPRAM	(PHYSIMM+0x2000)
-#define	DPLEN1	0x200
-#define	DPLEN2	0x400
-#define	DPLEN3	0x800
-#define	DPBASE	(PHYSDPRAM+DPLEN1)
-
-#define KEEP_ALIVE_KEY 0x55ccaa33	/* clock and rtc register key */
diff --git a/os/fads/mkfile b/os/fads/mkfile
deleted file mode 100644
index afc241a1..00000000
--- a/os/fads/mkfile
+++ /dev/null
@@ -1,107 +0,0 @@
-SYSTARG=Inferno
-OBJTYPE=power
-<../../mkconfig
-
-#Configurable parameters
-
-CONF=fads			#default configuration
-CONFLIST=fads fadskfs fads2
-CLEANCONFLIST=paq
-KZERO=0x20003020
-
-SYSTARG=$OSTARG
-OBJTYPE=power
-INSTALLDIR=$ROOT/Inferno/$OBJTYPE/bin	#path of directory where kernel is installed
-#INSTALLDIR=/$OBJTYPE
-
-#end configurable parameters
-
-<$ROOT/mkfiles/mkfile-$SYSTARG-$OBJTYPE	#set vars based on target system
-
-<| $SHELLNAME ../port/mkdevlist $CONF	#sets $IP, $DEVS, $ETHERS, $VGAS, $PORT, $MISC, $LIBS, $OTHERS
-
-OBJ=\
-	l.$O\
-	tlb.$O\
-	nofp.$O\
-	clock.$O\
-	cpm.$O\
-	faultpower.$O\
-	fpi.$O\
-	fpimem.$O\
-	fpipower.$O\
-	kbd.$O\
-	main.$O\
-	mmu.$O\
-	rmap.$O\
-	trap.$O\
-	$CONF.root.$O\
-	$IP\
-	$DEVS\
-	$ETHERS\
-	$LINKS\
-	$VGAS\
-	$PORT\
-	$MISC\
-	$OTHERS\
-
-LIBNAMES=${LIBS:%=lib%.a}
-
-HFILES=\
-	mem.h\
-	dat.h\
-	fns.h\
-	io.h\
-	../mpc/800io.h\
-	../mpc/screen.h\
-
-CFLAGS=-wFV -I. -I../mpc -I../port -I$ROOT/Inferno/$OBJTYPE/include -I$ROOT/include -I$ROOT/libinterp
-KERNDATE=`{$NDATE}
-
-#default:V: i$CONF.sq
-default:V:	i$CONF
-
-i$CONF:	$OBJ $CONF.c $CONF.root.h $LIBNAMES
-	$CC $CFLAGS '-DKERNDATE='$KERNDATE $CONF.c
-	$LD -o $target -T$KZERO -l $OBJ $CONF.$O $LIBFILES
-	$KSIZE $target
-
-i$CONF.sq:	i$CONF
-	sqz -w i$CONF >$target
-
-install:V: i$CONF # i$CONF.sq
-	cp i$CONF $INSTALLDIR/i$CONF
-	#cp i$CONF.sq $INSTALLDIR/i$CONF.sq
-
-uninstall:V:
-	rm -f $ROOT/$OBJDIR/bin/i$CONF
-	rm -f $ROOT/$OBJDIR/bin/i$CONF.sq
-
-<../port/portmkfile
-
-../init/$INIT.dis:	../init/$INIT.b
-		cd ../init; mk $INIT.dis
-
-%.$O:		../mpc/%.c
-	$CC $CFLAGS -I. -I../mpc ../mpc/$stem.c
-
-%.$O:		../mpc/%.s
-	$AS -I. -I../mpc ../mpc/$stem.s
-
-clock.$O:	$ROOT/Inferno/$OBJTYPE/include/ureg.h
-devether.$O:	$ROOT/Inferno/$OBJTYPE/include/ureg.h
-faultpower.$O:	$ROOT/Inferno/$OBJTYPE/include/ureg.h
-main.$O:	$ROOT/Inferno/$OBJTYPE/include/ureg.h
-trap.$O:	$ROOT/Inferno/$OBJTYPE/include/ureg.h
-screen.h:NV:	../mpc/screen.h
-
-devether.$O $ETHERS:	../mpc/etherif.h ../port/netif.h
-
-#$VGAS:		screen.h vga.h
-$IP devip.$O:		../ip/ip.h
-
-devboot.$O:	devboot.c
-	$CC $CFLAGS devboot.c
-
-devuart.$O:	../mpc/devuart.c
-	$CC $CFLAGS ../mpc/devuart.c
diff --git a/os/fads/mmu.c b/os/fads/mmu.c
deleted file mode 100644
index c9cd758b..00000000
--- a/os/fads/mmu.c
+++ /dev/null
@@ -1,20 +0,0 @@
-#include	"u.h"
-#include	"../port/lib.h"
-#include	"mem.h"
-#include	"dat.h"
-#include	"fns.h"
-
-void
-mmuinit(void)
-{
-	/* the l.s initial TLB settings do all that's required */
-}
-
-int
-segflush(void *a, ulong n)
-{
-	/* flush dcache then invalidate icache */
-	dcflush(a, n);
-	icflush(a, n);
-	return 0;
-}
diff --git a/os/fads/tlb.s b/os/fads/tlb.s
deleted file mode 100644
index 68ebf4e7..00000000
--- a/os/fads/tlb.s
+++ /dev/null
@@ -1,23 +0,0 @@
-#include	"mem.h"
-
-#define	MB	(1024*1024)
-
-/*
- * TLB prototype entries, loaded once-for-all at startup,
- * remaining unchanged thereafter.
- * Limit the table to at most 8 entries to ensure
- * it works on the 823 (other 8xx processors allow up to 32 TLB entries).
- */
-#define	TLBE(epn,rpn,twc)	WORD	$(epn);  WORD	$(twc); WORD	$(rpn)
-
-TEXT	tlbtab(SB), $-4
-
-	/* epn, rpn, twc */
-	TLBE(KZERO|PHYSDRAM|TLBVALID, PHYSDRAM|PTEWRITE|PTELPS|PTESH|PTEVALID, PTE8MB|/*PTEWT|*/PTEVALID)	/* DRAM, 8M */
-	TLBE(KZERO|PHYSBCSR|TLBVALID, PHYSBCSR|PTEWRITE|PTESH|PTECI|PTEVALID, PTE4K|PTEWT|PTEVALID)	/* Board CSR, 4K */
-	TLBE(KZERO|PHYSIMM|TLBVALID, PHYSIMM|PTEWRITE|PTELPS|PTESH|PTECI|PTEVALID, PTE4K|PTEWT|PTEVALID)	/* IMMR, 16K */
-	TLBE(KZERO|PHYSFLASH|TLBVALID, PHYSFLASH|PTEWRITE|PTELPS|PTESH|PTECI|PTEVALID, PTE8MB|PTEWT|PTEVALID)	/* Flash, 8M */
-	TLBE(KZERO|PHYSSDRAM|TLBVALID, PHYSSDRAM|PTEWRITE|PTELPS|PTESH|PTEVALID, PTE8MB|/*PTEWT|*/PTEVALID)	/* SDRAM, 8M */
-	TLBE(KZERO|PHYSPCMCIA|TLBVALID, PHYSPCMCIA|PTEWRITE|PTELPS|PTESH|PTECI|PTEVALID, PTE8MB|PTEWT|PTEG|PTEVALID)	/* PCMCIA, 8M */
-TEXT	tlbtabe(SB), $-4
-	RETURN