From 78ee7d5717807e6ac779293d0d3c78341de6130a Mon Sep 17 00:00:00 2001
From: "Konstantin Kirik (snegovick)" <snegovick@uprojects.org>
Date: Sun, 28 Dec 2025 12:27:31 +0300
Subject: Move existing boards into subdits split per arch

---
 os/pc/archmp.c | 138 ---------------------------------------------------------
 1 file changed, 138 deletions(-)
 delete mode 100644 os/pc/archmp.c

(limited to 'os/pc/archmp.c')

diff --git a/os/pc/archmp.c b/os/pc/archmp.c
deleted file mode 100644
index fbbda091..00000000
--- a/os/pc/archmp.c
+++ /dev/null
@@ -1,138 +0,0 @@
-#include "u.h"
-#include "../port/lib.h"
-#include "mem.h"
-#include "dat.h"
-#include "fns.h"
-#include "io.h"
-
-#include "mp.h"
-
-#define	cpuserver	1
-
-_MP_ *_mp_;
-
-static _MP_*
-mpscan(uchar *addr, int len)
-{
-	uchar *e, *p, sum;
-	int i;
-
-	e = addr+len;
-	for(p = addr; p < e; p += sizeof(_MP_)){
-		if(memcmp(p, "_MP_", 4))
-			continue;
-		sum = 0;
-		for(i = 0; i < sizeof(_MP_); i++)
-			sum += p[i];
-		if(sum == 0)
-			return (_MP_*)p;
-	}
-	return 0;
-}
-
-static _MP_*
-mpsearch(void)
-{
-	uchar *bda;
-	ulong p;
-	_MP_ *mp;
-
-	/*
-	 * Search for the MP Floating Pointer Structure:
-	 * 1) in the first KB of the EBDA;
-	 * 2) in the last KB of system base memory;
-	 * 3) in the BIOS ROM between 0xE0000 and 0xFFFFF.
-	 */
-	bda = KADDR(0x400);
-	if((p = (bda[0x0F]<<8)|bda[0x0E])){
-		if(mp = mpscan(KADDR(p), 1024))
-			return mp;
-	}
-	else{
-		p = ((bda[0x14]<<8)|bda[0x13])*1024;
-		if(mp = mpscan(KADDR(p-1024), 1024))
-			return mp;
-	}
-	return mpscan(KADDR(0xF0000), 0x10000);
-}
-
-static int identify(void);
-
-PCArch archmp = {
-.id=		"_MP_",	
-.ident=		identify,
-.reset=		mpshutdown,
-.intrinit=	mpinit,
-.intrenable=	mpintrenable,
-.fastclock=	i8253read,
-.timerset=	lapictimerset,
-};
-
-static int
-identify(void)
-{
-	PCMP *pcmp;
-	uchar *p, sum;
-	ulong length;
-
-	if(getconf("*nomp"))
-		return 1;
-
-	/*
-	 * Search for an MP configuration table. For now,
-	 * don't accept the default configurations (physaddr == 0).
-	 * Check for correct signature, calculate the checksum and,
-	 * if correct, check the version.
-	 * To do: check extended table checksum.
-	 */
-	if((_mp_ = mpsearch()) == 0 || _mp_->physaddr == 0)
-		return 1;
-
-	pcmp = KADDR(_mp_->physaddr);
-	if(memcmp(pcmp, "PCMP", 4))
-		return 1;
-
-	length = pcmp->length;
-	sum = 0;
-	for(p = (uchar*)pcmp; length; length--)
-		sum += *p++;
-
-	if(sum || (pcmp->version != 1 && pcmp->version != 4))
-		return 1;
-
-	if(cpuserver && m->havetsc)
-		archmp.fastclock = tscticks;
-	return 0;
-}
-
-Lock mpsynclock;
-
-void
-syncclock(void)
-{
-	uvlong x;
-
-	if(arch->fastclock != tscticks)
-		return;
-
-	if(m->machno == 0){
-		wrmsr(0x10, 0);
-		m->tscticks = 0;
-	} else {
-		x = MACHP(0)->tscticks;
-		while(x == MACHP(0)->tscticks)
-			;
-		wrmsr(0x10, MACHP(0)->tscticks);
-		cycles(&m->tscticks);
-	}
-}
-
-uvlong
-tscticks(uvlong *hz)
-{
-	if(hz != nil)
-		*hz = m->cpuhz;
-
-	cycles(&m->tscticks);	/* Uses the rdtsc instruction */
-	return m->tscticks;
-}
-- 
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