Re: [PATCH] Support for GEODE CPUs

[Kianusch Sayah Karadji <kianusch@sk-tech.net>]

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Hi!

On Mon, 21 Mar 2005, Andrew Morton wrote:

>> Either revert it or make it Geode GX and correct the options set. I've 
>> no problem with a Geode option that sets the right options 8)
>
> Two weeks, no patch.  It looks like we'll be reverting it.

I somehow missed the thread in the list discussing the neccesary changes.

Anyway here's a new patch (this time for 2.6.11).

I changed the whole thing from "Geode GX" to "Geode GX1", and made the 
adjustments Alan suggested.

Regards
   Kianusch

BTW.: I wish everybody - celebrating "new year" (NowRouz) these days - a 
happy and peaceful new year - and everybody else a wonderful spring 
quinox.

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diff -Nur linux-2.6.11/arch/i386/Kconfig linux-2.6.11_geode/arch/i386/Kconfig
--- linux-2.6.11/arch/i386/Kconfig	Wed Mar  2 08:37:49 2005
+++ linux-2.6.11_geode/arch/i386/Kconfig	Tue Mar 22 02:03:17 2005
@@ -183,6 +183,7 @@
 	  - "Winchip-C6" for original IDT Winchip.
 	  - "Winchip-2" for IDT Winchip 2.
 	  - "Winchip-2A" for IDT Winchips with 3dNow! capabilities.
+	  - "GeodeGX1" for Geode GX1 (Cyrix MediaGX).
 	  - "CyrixIII/VIA C3" for VIA Cyrix III or VIA C3.
 	  - "VIA C3-2 for VIA C3-2 "Nehemiah" (model 9 and above).
 
@@ -310,6 +311,11 @@
 	  stores for this CPU, which can increase performance of some
 	  operations.
 
+config MGEODEGX1
+	bool "GeodeGX1"
+	help
+	  Select this for a Geode GX1 (Cyrix MediaGX) chip.
+
 config MCYRIXIII
 	bool "CyrixIII/VIA-C3"
 	help
@@ -360,7 +366,7 @@
 	int
 	default "7" if MPENTIUM4 || X86_GENERIC
 	default "4" if X86_ELAN || M486 || M386
-	default "5" if MWINCHIP3D || MWINCHIP2 || MWINCHIPC6 || MCRUSOE || MEFFICEON || MCYRIXIII || MK6 || MPENTIUMIII || MPENTIUMII || M686 || M586MMX || M586TSC || M586 || MVIAC3_2
+	default "5" if MWINCHIP3D || MWINCHIP2 || MWINCHIPC6 || MCRUSOE || MEFFICEON || MCYRIXIII || MK6 || MPENTIUMIII || MPENTIUMII || M686 || M586MMX || M586TSC || M586 || MVIAC3_2 || MGEODEGX1
 	default "6" if MK7 || MK8 || MPENTIUMM
 
 config RWSEM_GENERIC_SPINLOCK
@@ -379,7 +385,7 @@
 
 config X86_PPRO_FENCE
 	bool
-	depends on M686 || M586MMX || M586TSC || M586 || M486 || M386
+	depends on M686 || M586MMX || M586TSC || M586 || M486 || M386 || MGEODEGX1
 	default y
 
 config X86_F00F_BUG
@@ -409,7 +415,7 @@
 
 config X86_ALIGNMENT_16
 	bool
-	depends on MWINCHIP3D || MWINCHIP2 || MWINCHIPC6 || MCYRIXIII || X86_ELAN || MK6 || M586MMX || M586TSC || M586 || M486 || MVIAC3_2
+	depends on MWINCHIP3D || MWINCHIP2 || MWINCHIPC6 || MCYRIXIII || X86_ELAN || MK6 || M586MMX || M586TSC || M586 || M486 || MVIAC3_2 || MGEODEGX1
 	default y
 
 config X86_GOOD_APIC
@@ -570,7 +576,7 @@
 
 config X86_TSC
 	bool
-	depends on (MWINCHIP3D || MWINCHIP2 || MCRUSOE || MEFFICEON || MCYRIXIII || MK7 || MK6 || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || M586MMX || M586TSC || MK8 || MVIAC3_2) && !X86_NUMAQ
+	depends on (MWINCHIP3D || MWINCHIP2 || MCRUSOE || MEFFICEON || MCYRIXIII || MK7 || MK6 || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || M586MMX || M586TSC || MK8 || MVIAC3_2 || MGEODEGX1) && !X86_NUMAQ
 	default y
 
 config X86_MCE
diff -Nur linux-2.6.11/arch/i386/Makefile linux-2.6.11_geode/arch/i386/Makefile
--- linux-2.6.11/arch/i386/Makefile	Wed Mar  2 08:37:58 2005
+++ linux-2.6.11_geode/arch/i386/Makefile	Tue Mar 22 02:04:27 2005
@@ -14,6 +14,8 @@
 # 19990713  Artur Skawina <skawina@geocities.com>
 #           Added '-march' and '-mpreferred-stack-boundary' support
 #
+# 20050320  Kianusch Sayah Karadji <kianusch@sk-tech.net>
+#           Added support for GEODE CPU
 
 LDFLAGS		:= -m elf_i386
 OBJCOPYFLAGS	:= -O binary -R .note -R .comment -S
@@ -51,6 +53,9 @@
 
 # AMD Elan support
 cflags-$(CONFIG_X86_ELAN)	+= -march=i486
+
+# Geode GX1 support
+cflags-$(CONFIG_MGEODEGX1)		+= $(call cc-option,-march=pentium-mmx,-march=i486)
 
 # -mregparm=3 works ok on gcc-3.0 and later
 #
diff -Nur linux-2.6.11/include/asm-i386/module.h linux-2.6.11_geode/include/asm-i386/module.h
--- linux-2.6.11/include/asm-i386/module.h	Wed Mar  2 08:37:48 2005
+++ linux-2.6.11_geode/include/asm-i386/module.h	Tue Mar 22 02:03:17 2005
@@ -52,6 +52,8 @@
 #define MODULE_PROC_FAMILY "CYRIXIII "
 #elif defined CONFIG_MVIAC3_2
 #define MODULE_PROC_FAMILY "VIAC3-2 "
+#elif CONFIG_MGEODEGX1
+#define MODULE_PROC_FAMILY "GEODEGX1 "
 #else
 #error unknown processor family
 #endif