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authorDmitri Vorobiev <dmitri.vorobiev@gmail.com>2008-04-21 00:47:55 +0400
committerIngo Molnar <mingo@elte.hu>2008-04-26 17:35:47 +0200
commitf7f17a67c589f031c567d9fdc809dee7c5868c8a (patch)
tree1022dde20e24c97919a334adcc75b3bc31ee1c70 /arch/x86/kernel
parenta2b4bd9c95a799ce1002e699187f17ddaa754eb1 (diff)
x86: remove NexGen support
It is claimed that NexGen CPUs were never shipped: http://lkml.org/lkml/2008/4/20/179 Also, the kernel support for these chips has been broken for a long time, the code intended to support NexGen thereby being essentially dead. As an outcome of the discussion that can be found using the URL above, this patch removes the NexGen support altogether. The changes in this patch survived a defconfig build for i386, a couple of successful randconfig builds, as well as a runtime test, which consisted in booting a 32-bit x86 box up to the shell prompt. Signed-off-by: Dmitri Vorobiev <dmitri.vorobiev@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86/kernel')
-rw-r--r--arch/x86/kernel/cpu/Makefile1
-rw-r--r--arch/x86/kernel/cpu/nexgen.c59
2 files changed, 0 insertions, 60 deletions
diff --git a/arch/x86/kernel/cpu/Makefile b/arch/x86/kernel/cpu/Makefile
index ee7c45235e5..a0c6f819088 100644
--- a/arch/x86/kernel/cpu/Makefile
+++ b/arch/x86/kernel/cpu/Makefile
@@ -11,7 +11,6 @@ obj-$(CONFIG_X86_32) += cyrix.o
obj-$(CONFIG_X86_32) += centaur.o
obj-$(CONFIG_X86_32) += transmeta.o
obj-$(CONFIG_X86_32) += intel.o
-obj-$(CONFIG_X86_32) += nexgen.o
obj-$(CONFIG_X86_32) += umc.o
obj-$(CONFIG_X86_MCE) += mcheck/
diff --git a/arch/x86/kernel/cpu/nexgen.c b/arch/x86/kernel/cpu/nexgen.c
deleted file mode 100644
index 5d5e1c13412..00000000000
--- a/arch/x86/kernel/cpu/nexgen.c
+++ /dev/null
@@ -1,59 +0,0 @@
-#include <linux/kernel.h>
-#include <linux/init.h>
-#include <linux/string.h>
-#include <asm/processor.h>
-
-#include "cpu.h"
-
-/*
- * Detect a NexGen CPU running without BIOS hypercode new enough
- * to have CPUID. (Thanks to Herbert Oppmann)
- */
-
-static int __cpuinit deep_magic_nexgen_probe(void)
-{
- int ret;
-
- __asm__ __volatile__ (
- " movw $0x5555, %%ax\n"
- " xorw %%dx,%%dx\n"
- " movw $2, %%cx\n"
- " divw %%cx\n"
- " movl $0, %%eax\n"
- " jnz 1f\n"
- " movl $1, %%eax\n"
- "1:\n"
- : "=a" (ret) : : "cx", "dx");
- return ret;
-}
-
-static void __cpuinit init_nexgen(struct cpuinfo_x86 *c)
-{
- c->x86_cache_size = 256; /* A few had 1 MB... */
-}
-
-static void __cpuinit nexgen_identify(struct cpuinfo_x86 *c)
-{
- /* Detect NexGen with old hypercode */
- if (deep_magic_nexgen_probe())
- strcpy(c->x86_vendor_id, "NexGenDriven");
-}
-
-static struct cpu_dev nexgen_cpu_dev __cpuinitdata = {
- .c_vendor = "Nexgen",
- .c_ident = { "NexGenDriven" },
- .c_models = {
- { .vendor = X86_VENDOR_NEXGEN,
- .family = 5,
- .model_names = { [1] = "Nx586" }
- },
- },
- .c_init = init_nexgen,
- .c_identify = nexgen_identify,
-};
-
-int __init nexgen_init_cpu(void)
-{
- cpu_devs[X86_VENDOR_NEXGEN] = &nexgen_cpu_dev;
- return 0;
-}