genuine cpu I386_CPU kernel support

[Julian H. Stacey]

Hi hackers,
I'm trying to get my Genuine 386 running 7.2. It currently runs 4.11.
386 was first base of FreeBSD, a shame to lose it.
So far I've hacked diffs as below + the normal
	/etc/make.conf	CFLAGS += -march=i386
	cross compiled all bins libs etc &
	setenv DESTDIR /usr/7.2 i
	cd /usr/src/etc l make distrib-dirs 
	cd .. ; make install
But manually unloading 4.11 kernel & loading 7.2 kernel & booting
doesnt yet boot far enough to encourage me to move bins yet,
I think I need to do a bit more kernel before that ?
This is what I gave so far. Input welcome.

*** /pri/freebsd/releases/7.2-RELEASE/src/sys/./conf/options.i386	Wed Apr 15 05:14:26 2009
--- /usr/src/sys/./conf/options.i386	Thu Sep 17 10:53:11 2009
***************
*** 71,76 ****
--- 71,78 ----
  NO_MEMORY_HOLE			opt_cpu.h
  
  # The CPU type affects the endian conversion functions all over the kernel.
+ // jhs at berklix added I386_CPU 
+ I386_CPU		opt_global.h
  I486_CPU		opt_global.h
  I586_CPU		opt_global.h
  I686_CPU		opt_global.h

*** /pri/freebsd/releases/7.2-RELEASE/src/sys/./crypto/blowfish/arch/i386/bf_enc.S	Wed Apr 15 05:14:26 2009
--- /usr/src/sys/./crypto/blowfish/arch/i386/bf_enc.S	Thu Sep 17 10:54:51 2009
***************
*** 10,16 ****
   * XXX Should use CPP symbols defined as a result of
   * XXX `cc -mcpu=pentiumpro'.
   */
! #if defined(I486_CPU) || defined(I586_CPU)
  #include "bf_enc_586.S"
  #else
  #include "bf_enc_686.S"
--- 10,17 ----
   * XXX Should use CPP symbols defined as a result of
   * XXX `cc -mcpu=pentiumpro'.
   */
! // jhs at berklix added I386_CPU 
! #if defined(I386_CPU) || defined(I486_CPU) || defined(I586_CPU)
  #include "bf_enc_586.S"
  #else
  #include "bf_enc_686.S"

*** /pri/freebsd/releases/7.2-RELEASE/src/sys/./i386/conf/GENERIC	Wed Apr 15 05:14:26 2009
--- /usr/src/sys/./i386/conf/GENERIC	Thu Sep 17 10:56:26 2009
***************
*** 18,23 ****
--- 18,24 ----
  #
  # $FreeBSD: src/sys/i386/conf/GENERIC,v 1.474.2.17.2.1 2009/04/15 03:14:26 kensmith Exp $
  
+ cpu		I386_CPU	# jhs at berklix added I386_CPU 
  cpu		I486_CPU
  cpu		I586_CPU
  cpu		I686_CPU

*** /pri/freebsd/releases/7.2-RELEASE/src/sys/./i386/i386/identcpu.c	Wed Apr 15 05:14:26 2009
--- /usr/src/sys/./i386/i386/identcpu.c	Thu Sep 17 11:05:05 2009
***************
*** 622,627 ****
--- 622,628 ----
  		break;
  	case CPUCLASS_386:
  		printf("386");
+ 			// jhs at berklix do we need to add code ?
  		break;
  #if defined(I486_CPU)
  	case CPUCLASS_486:
***************
*** 909,915 ****
  {
  
  #if !defined(lint)
! #if !defined(I486_CPU) && !defined(I586_CPU) && !defined(I686_CPU)
  #error This kernel is not configured for one of the supported CPUs
  #endif
  #else /* lint */
--- 910,917 ----
  {
  
  #if !defined(lint)
! // jhs at berklix added I386_CPU 
! #if !defined(I386_CPU) && !defined(I486_CPU) && !defined(I586_CPU) && !defined(I686_CPU)
  #error This kernel is not configured for one of the supported CPUs
  #endif
  #else /* lint */
***************
*** 920,926 ****
--- 922,930 ----
  	 */
  	switch (cpu_class) {
  	case CPUCLASS_286:	/* a 286 should not make it this far, anyway */
+ #if !defined(I386_CPU)	// jhs at berklix added I386_CPU 
  	case CPUCLASS_386:
+ #endif			 // jhs at berklix added I386_CPU 
  #if !defined(I486_CPU)
  	case CPUCLASS_486:
  #endif


Cheers,
Julian
-- 
Julian Stacey: BSD Unix Linux C Sys Eng Consultants Munich http://berklix.com
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