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[PATCH] Base support for AMD Geode GX/LX processors 

Provide basic support for the AMD Geode GX and LX processors.

Signed-off-by: Jordan Crouse <jordan.crouse@amd.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Jordan Crouse 2006-01-06 00:12:14 -08:00 committed by Linus Torvalds
parent 6b7f430ee0
commit f90b811603
6 changed files with 62 additions and 7 deletions
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7
MAINTAINERS
View File

@ -258,6 +258,13 @@ P: Ivan Kokshaysky
M: ink@jurassic.park.msu.ru
S: Maintained for 2.4; PCI support for 2.6.
AMD GEODE PROCESSOR/CHIPSET SUPPORT
P: Jordan Crouse
M: info-linux@geode.amd.com
L: info-linux@geode.amd.com
W: http://www.amd.com/us-en/ConnectivitySolutions/TechnicalResources/0,,50_2334_2452_11363,00.html
S: Supported
APM DRIVER
P: Stephen Rothwell
M: sfr@canb.auug.org.au

14
arch/i386/Kconfig.cpu
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@ -39,6 +39,7 @@ config M386
- "Winchip-2" for IDT Winchip 2.
- "Winchip-2A" for IDT Winchips with 3dNow! capabilities.
- "GeodeGX1" for Geode GX1 (Cyrix MediaGX).
- "Geode GX/LX" For AMD Geode GX and LX processors.
- "CyrixIII/VIA C3" for VIA Cyrix III or VIA C3.
- "VIA C3-2 for VIA C3-2 "Nehemiah" (model 9 and above).
@ -171,6 +172,11 @@ config MGEODEGX1
help
Select this for a Geode GX1 (Cyrix MediaGX) chip.
config MGEODE_LX
bool "Geode GX/LX"
help
Select this for AMD Geode GX and LX processors.
config MCYRIXIII
bool "CyrixIII/VIA-C3"
help
@ -220,8 +226,8 @@ config X86_XADD
config X86_L1_CACHE_SHIFT
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 || MGEODEGX1
default "4" if X86_ELAN || M486 || M386 || MGEODEGX1
default "5" if MWINCHIP3D || MWINCHIP2 || MWINCHIPC6 || MCRUSOE || MEFFICEON || MCYRIXIII || MK6 || MPENTIUMIII || MPENTIUMII || M686 || M586MMX || M586TSC || M586 || MVIAC3_2 || MGEODE_LX
default "6" if MK7 || MK8 || MPENTIUMM
config RWSEM_GENERIC_SPINLOCK
@ -290,12 +296,12 @@ config X86_INTEL_USERCOPY
config X86_USE_PPRO_CHECKSUM
bool
depends on MWINCHIP3D || MWINCHIP2 || MWINCHIPC6 || MCYRIXIII || MK7 || MK6 || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || MK8 || MVIAC3_2 || MEFFICEON
depends on MWINCHIP3D || MWINCHIP2 || MWINCHIPC6 || MCYRIXIII || MK7 || MK6 || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || MK8 || MVIAC3_2 || MEFFICEON || MGEODE_LX
default y
config X86_USE_3DNOW
bool
depends on MCYRIXIII || MK7
depends on MCYRIXIII || MK7 || MGEODE_LX
default y
config X86_OOSTORE

7
arch/i386/kernel/cpu/amd.c
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@ -161,8 +161,13 @@ static void __init init_amd(struct cpuinfo_x86 *c)
set_bit(X86_FEATURE_K6_MTRR, c->x86_capability);
break;
}
break;
if (c->x86_model == 10) {
/* AMD Geode LX is model 10 */
/* placeholder for any needed mods */
break;
}
break;
case 6: /* An Athlon/Duron */
/* Bit 15 of Athlon specific MSR 15, needs to be 0

27
arch/i386/kernel/cpu/cyrix.c
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@ -342,6 +342,31 @@ static void __init init_cyrix(struct cpuinfo_x86 *c)
return;
}
/*
* Handle National Semiconductor branded processors
*/
static void __devinit init_nsc(struct cpuinfo_x86 *c)
{
/* There may be GX1 processors in the wild that are branded
* NSC and not Cyrix.
*
* This function only handles the GX processor, and kicks every
* thing else to the Cyrix init function above - that should
* cover any processors that might have been branded differently
* after NSC aquired Cyrix.
*
* If this breaks your GX1 horribly, please e-mail
* info-linux@ldcmail.amd.com to tell us.
*/
/* Handle the GX (Formally known as the GX2) */
if (c->x86 == 5 && c->x86_model == 5)
display_cacheinfo(c);
else
init_cyrix(c);
}
/*
* Cyrix CPUs without cpuid or with cpuid not yet enabled can be detected
* by the fact that they preserve the flags across the division of 5/2.
@ -422,7 +447,7 @@ int __init cyrix_init_cpu(void)
static struct cpu_dev nsc_cpu_dev __initdata = {
.c_vendor = "NSC",
.c_ident = { "Geode by NSC" },
.c_init = init_cyrix,
.c_init = init_nsc,
.c_identify = generic_identify,
};

4
include/asm-i386/module.h
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@ -52,8 +52,10 @@ struct mod_arch_specific
#define MODULE_PROC_FAMILY "CYRIXIII "
#elif defined CONFIG_MVIAC3_2
#define MODULE_PROC_FAMILY "VIAC3-2 "
#elif CONFIG_MGEODEGX1
#elif defined CONFIG_MGEODEGX1
#define MODULE_PROC_FAMILY "GEODEGX1 "
#elif defined CONFIG_MGEODE_LX
#define MODULE_PROC_FAMILY "GEODE "
#else
#error unknown processor family
#endif

10
include/linux/pci_ids.h
View File

@ -394,6 +394,13 @@
#define PCI_DEVICE_ID_NS_87410 0xd001
#define PCI_DEVICE_ID_NS_CS5535_IDE 0x002d
#define PCI_DEVICE_ID_NS_CS5535_HOST_BRIDGE 0x0028
#define PCI_DEVICE_ID_NS_CS5535_ISA_BRIDGE 0x002b
#define PCI_DEVICE_ID_NS_CS5535_IDE 0x002d
#define PCI_DEVICE_ID_NS_CS5535_AUDIO 0x002e
#define PCI_DEVICE_ID_NS_CS5535_USB 0x002f
#define PCI_DEVICE_ID_NS_CS5535_VIDEO 0x0030
#define PCI_VENDOR_ID_TSENG 0x100c
#define PCI_DEVICE_ID_TSENG_W32P_2 0x3202
#define PCI_DEVICE_ID_TSENG_W32P_b 0x3205
@ -496,6 +503,9 @@
#define PCI_DEVICE_ID_AMD_CS5536_IDE 0x209A
#define PCI_DEVICE_ID_AMD_LX_VIDEO 0x2081
#define PCI_DEVICE_ID_AMD_LX_AES 0x2082
#define PCI_VENDOR_ID_TRIDENT 0x1023
#define PCI_DEVICE_ID_TRIDENT_4DWAVE_DX 0x2000
#define PCI_DEVICE_ID_TRIDENT_4DWAVE_NX 0x2001