Advantech PCM-5820

The Advantech PCM-5820 features a Cyrix GX1 processor, 2 IDE controllers (one is a CompactFlash reader), a USB port and a PC/104 extension bus.

Complete specs/docs can be found on Advantech website.

Status

Device/functionality	Status	Comments
CPU
CPU works	OK
L1 cache enabled	Unknown
L2 cache enabled	Unknown
L3 cache enabled	Unknown
Multiple CPU support	Unknown
Multi-core support	Unknown
Hardware virtualization	Unknown
RAM
EDO	N/A
SDRAM	N/A
SO-DIMM	Unknown	My 256M 100Mhz memory module is working fine.
DDR	N/A
DDR2	N/A
DDR3	Unknown
Dual channel support	N/A
ECC support	N/A
On-board Hardware
On-board IDE 3.5"	Untested
On-board IDE 2.5"	N/A
On-board SATA	N/A
On-board SCSI	Unknown
On-board USB	OK	Tested with an Hauppauge WinTv-USB device.
On-board VGA	OK	VGA support in LinuxBIOS works fine (e.g. for displaying a boot logo), for console/X11 you need a special kernel console and Xorg driver.
On-board ethernet	OK
On-board audio	Untested
On-board modem	N/A
On-board FireWire	N/A
On-board smartcard reader	N/A
On-board CompactFlash	Unknown
On-board PCMCIA	Unknown
Add-on slots/cards
ISA add-on cards	N/A
Audio/Modem-Riser (AMR/CNR) cards	Unknown
PCI add-on cards	N/A
Mini-PCI add-on cards	Unknown
PCI-X add-on cards	Unknown
AGP graphics cards	N/A
PCI Express x1 add-on cards	N/A
PCI Express x2 add-on cards	N/A
PCI Express x4 add-on cards	N/A
PCI Express x8 add-on cards	N/A
PCI Express x16 add-on cards	N/A
PCI Express x32 add-on cards	N/A
HTX add-on cards	N/A
Legacy / Super I/O
Floppy	Untested
Serial port 1 (COM1)	OK
Serial port 2 (COM2)	Untested
Parallel port	Untested
PS/2 keyboard	OK
PS/2 mouse	Untested
Game port	N/A
Infrared	Untested	I don't own the module that should be plugged on COM2.
PC speaker	OK
DiskOnChip	N/A
Miscellaneous
Sensors / fan control	Untested	This CPU does not need a fan.
Hardware watchdog	N/A
SMBus	Unknown
CAN bus	OK	Tested with an AIM104-CAN card.
CPU frequency scaling	Untested
Other powersaving features	Untested
ACPI	Untested
Reboot	OK
Poweroff	Untested
Suspend	Unknown
Nonstandard LEDs	N/A
High precision event timers (HPET)	N/A
Random number generator (RNG)	Unknown
Wake on modem ring	Unknown
Wake on LAN	Unknown
Wake on keyboard	Unknown
Wake on mouse	Unknown
Flashrom	OK	Works fine, both with LinuxBIOS and with the proprietary BIOS. Note that a ST39VF020-70-4C-NHE chip worked on it even though it's not recommended.

Hardware

The PCM-5820 board

The AIM-PC104 module used to validate the CAN bus

Detailed System Information

lspci -tvnn -[0000:00]-+-00.0 Cyrix Corporation PCI Master [1078:0001]

          +-0b.0  Realtek Semiconductor Co., Ltd. RTL-8139/8139C/8139C+ [10ec:8139]
          +-12.0  Cyrix Corporation 5530 Legacy [Kahlua] [1078:0100]
          +-12.1  Cyrix Corporation 5530 SMI [Kahlua] [1078:0101]
          +-12.2  Cyrix Corporation 5530 IDE [Kahlua] [1078:0102]
          +-12.3  Cyrix Corporation 5530 Audio [Kahlua] [1078:0103]
          +-12.4  Cyrix Corporation 5530 Video [Kahlua] [1078:0104]
          \-13.0  Compaq Computer Corporation ZFMicro Chipset USB [0e11:a0f8]

/proc/cpuinfo processor : 0 vendor_id : Geode by NSC cpu family : 5 model : 9 model name : Geode(TM) Integrated Processor by National Semi stepping : 2 cpu MHz : 299.247 cache size : 16 KB fdiv_bug : no hlt_bug : no f00f_bug : no coma_bug : no fpu : yes fpu_exception : yes cpuid level : 2 wp : yes flags : fpu tsc msr cx8 cmov mmx cxmmx bogomips : 600.56 clflush size : 32

/proc/iomem 00001000-0009ffff : System RAM 000a0000-000bffff : Video RAM area 000f0000-000fffff : System ROM 00100000-0fdfffff : System RAM

 00100000-002baff4 : Kernel code
 002baff5-0033b88b : Kernel data

10000000-100000ff : 0000:00:12.1 40000000-40000fff : scratch_pad_ram

 40000000-40000fff : Geode GX1 Framebuffer

40008000-400080ff : bus_interface

 40008000-400080ff : Geode GX1 Bus Interface

40008100-400082ff : video_pipeline

 40008100-400082ff : Geode GX1 Framebuffer

40008300-400083ff : display_control

 40008300-400083ff : Geode GX1 Framebuffer

40008400-400084ff : memory_control

 40008400-400084ff : Geode GX1 Memory Control

40008500-40008fff : power_control.0 40400000-407fffff : smm_area.0 40800000-487fffff : video_memory

 40800000-487fffff : Geode GX1 Framebuffer

febfc000-febfcfff : 0000:00:12.4

 febfc000-febfcfff : Geode GX1 Framebuffer

febfd000-febfdfff : 0000:00:13.0

 febfd000-febfdfff : ohci_hcd

febfe000-febfe0ff : 0000:00:0b.0

 febfe000-febfe0ff : 8139too

febff000-febff07f : 0000:00:12.3 fffc0000-ffffffff : flash_memory.0

/proc/interrupts

          CPU0       
 0:     183986    XT-PIC-XT        timer
 1:          2    XT-PIC-XT        i8042
 2:          0    XT-PIC-XT        cascade
 4:         91    XT-PIC-XT        serial
 8:          1    XT-PIC-XT        rtc
10:        584    XT-PIC-XT        eth0
11:          0    XT-PIC-XT        ohci_hcd:usb1
12:          3    XT-PIC-XT        i8042
15:       3541    XT-PIC-XT        ide1

NMI: 0 ERR: 0

Building a LinuxBIOS image

$ cd targets
$ ./buildtarget bcom/winnet100
$ cd bcom/winnet100/winnet100
$ LANG=C make

The LANG=C is only for those users (like me) that uses a localised system. Determining some include pathes fails in LB's build system, if the GCC answers in German...

Required patches

--- linux-2.6.22.orig/arch/i386/kernel/cpu/cyrix.c
+++ linux-2.6.22/arch/i386/kernel/cpu/cyrix.c
@@ -178,6 +178,21 @@ static void __cpuinit set_cx86_inc(void)
 	setCx86(CX86_CCR3, ccr3);	/* disable MAPEN */
 }
 
+#ifdef CONFIG_DISABLE_INTERNAL_REGISTERS
+static void __cpuinit disable_internal_chipset(void)
+{
+	printk(KERN_INFO "Disable integrated function access.\n");
+	/*
+	 * this disables the integrated function memory area
+	 *  - disables the scratch pad - full cache is available
+	 *  - disables access to any internal chipset registers
+	 */
+	setCx86(CX86_GCR,0x00);
+}
+#else
+# define disable_internal_chipset()
+#endif
+
 /*
  *	Configure later MediaGX and/or Geode processor.
  */
@@ -197,6 +212,7 @@ static void __cpuinit geode_configure(vo
 
 	/* FPU fast, DTE cache, Mem bypass */
 	setCx86(CX86_CCR4, getCx86(CX86_CCR4) | 0x38);
+	disable_internal_chipset();
 	setCx86(CX86_CCR3, ccr3);			/* disable MAPEN */
 
 	set_cx86_memwb();