[LinuxBIOS] PIRQ REF DES AMD LXUVCRDK

[Marc Jones]

Otávio Alcântara wrote:
> Hello to all,
> 
>           I'm porting a linuxbios v2 version for a board ref des 
> LXUVCRDK (http://www.amd.com/geodelxuvcrdk) based on norwich board. I've 
> already got to boot linux from HD, but it seems to halt in some point 
> (see log below captured from serial). Although,  I'm using VSA 
> (lx_vsa.36k.bin) and I got no output from video VGA.
>           I'd like some help for setting up the PIRQ table and for VGA 
> setup.
> 
> PS: The schematics for this board are publicly available from AMD 
> Embedded Developer Web Site.
> 
> Thanks,       
> 
> -- 
> Otávio Alcântara
> "I'll never cross to the Dark Side."
> 
> 
> 

I took a quick look at the schematics and I think that this is what the 
PIRQ table should look like.

/* If you change the number of entries, change the IRQ_SLOT_COUNT above! */
/* bus, dev|fn,           {link, bitmap},      {link, bitmap}, 
{link, bitmap},     {link, bitmap},     slot, rfu */
{0x00, (0x01 << 3) | 0x0, {{L_PIRQA, M_PIRQA}, {0x00, 0x00}, {0x00, 
0x00}, {0x00, 0x00}}, 0x0, 0x0},	/* cpu */
{0x00, (0x0F << 3) | 0x0, {{L_PIRQA, M_PIRQA}, {L_PIRQB, M_PIRQB}, 
{L_PIRQC, M_PIRQC}, {L_PIRQD, M_PIRQD}}, 0x0, 0x0},	/* chipset */
{0x00, (0x0D << 3) | 0x0, {{L_PIRQA, M_PIRQA}, {0x00, 0x00}, {0x00, 
0x00}, {0x00, 0x00}}, 0x0, 0x0},	/* ethernet */

Make sure to change IRQ_SLOT_COUNT in the mainboard Options.lb

As Jordan pointed out, you should use the Linux framebuffer and X 
drivers instead of VGA. That means that you should also set 
CONFIG_CONSOLE_VGA=0 and CONFIG_PCI_ROM_RUN=0 in Options.lb


It also looks like there is something funny going on with the Config.lb. 
Try using the norwich one without modifications.

 > cs5536: southbridge_init: enable_ide_nand_flash is 36
If you want to boot from IDE enable_ide_nand_flash should be 0

 > Disabling VPCI device: 0x0000106C
 > Disabling VPCI device: 0x00001075
 > Disabling VPCI device: 0x0000107E
 > Disabling VPCI device: 0x00001087
 > Disabling VPCI device: 0x00001090
 > Disabling VPCI device: 0x00001099
 > Disabling VPCI device: 0x000010A2
 > Disabling VPCI device: 0x000010AB
This is a very strange list.


I don't have one of these boards so when you get it working please 
submit a patch!
Let me know if there is anything else I can do to help

Marc



> 
> LinuxBIOS-2.0.0.0Fallback Qua Jun 20 07:45:43 BRT 2007 starting...
> _MSR GLCP_SYS_RSTPLL (4c000014) value is: 00000498:00001820
> Configuring PLL
> 
> 
> LinuxBIOS-2.0.0.0Fallback Qua Jun 20 07:45:43 BRT 2007 starting...
> _MSR GLCP_SYS_RSTPLL (4c000014) value is: 00000498:07de0020
> Done cpuRegInit
> SMBUS READ ERROR:03 device:a2
> Ram1.00
> Ram2.00
> SMBUS READ ERROR:03 device:a2
> SMBUS READ ERROR:03 device:a2
> SMBUS READ ERROR:03 device:a2
> SMBUS READ ERROR:03 device:a2
> SMBUS READ ERROR:03 device:a2
> SMBUS READ ERROR:03 device:a2
> SMBUS READ ERROR:03 device:a2
> SMBUS READ ERROR:03 device:a2
> SMBUS READ ERROR:03 device:a2
> SMBUS READ ERROR:03 device:a2
> SMBUS READ ERROR:03 device:a2
> Ram3
> DRAM controller init done.
> RAM DLL lock
> Ram4
> Copying LinuxBIOS to ram.
> Jumping to LinuxBIOS.
> LinuxBIOS-2.0.0.0Fallback Qua Jun 20 08:56:35 BRT 2007 booting...
> clocks_per_usec: 432
> Enumerating buses...
>  >> Entering northbridge.c: pci_domain_enable
> Enter northbridge_init_early
> writeglmsr: MSR 0x10000020, val 0x20000000:0x000fff80
> writeglmsr: MSR 0x10000021, val 0x20000000:0x080fffe0
> writeglmsr: MSR 0x1000002c, val 0x20000000:0x00000003
> sizeram: _MSR MC_CF07_DATA: 10076112:00004840
> sizeram: sizem 0x100MB
> SysmemInit: enable for 256MBytes
> usable RAM: 268304383 bytes
> SysmemInit: MSR 0x10000028, val 0x2000000f:0xfdf00100
> sizeram: _MSR MC_CF07_DATA: 10076112:00004840
> sizeram: sizem 0x100MB
> SMMGL0Init: 268304384 bytes
> SMMGL0Init: offset is 0x80400000
> SMMGL0Init: MSR 0x10000026, val 0x28fbe080:0x400fffe0
> writeglmsr: MSR 0x10000080, val 0x00000000:0x00000003
> writeglmsr: MSR 0x40000020, val 0x20000000:0x000fff80
> writeglmsr: MSR 0x40000021, val 0x20000000:0x080fffe0
> writeglmsr: MSR 0x4000002e, val 0x20000000:0x00000003
> sizeram: _MSR MC_CF07_DATA: 10076112:00004840
> sizeram: sizem 0x100MB
> SysmemInit: enable for 256MBytes
> usable RAM: 268304383 bytes
> SysmemInit: MSR 0x4000002a, val 0x2000000f:0xfdf00100
> SMMGL1Init:
> SMMGL1Init: MSR 0x40000023, val 0x20000080:0x400fffe0
> writeglmsr: MSR 0x40000080, val 0x00000000:0x00000001
> writeglmsr: MSR 0x400000e3, val 0x60000000:0x033000f0
> CPU_RCONF_DEFAULT (1808): 0x25FFFC02:0x10FFDF00
> CPU_RCONF_BYPASS (180A): 0x00000000 : 0x00000000
> L2 cache enabled
> Enabling cache
> GLPCI R1: system msr.lo 0x00100130 msr.hi 0x0ffdf000
> GLPCI R2: system msr.lo 0x80400120 msr.hi 0x8041f000
> Exit northbridge_init_early
> Done cpubug fixes
> Not Doing ChipsetFlashSetup()
> <<<WARNING>>> Graphics init...
>  <<WARNING!!!>>> VRC_VG value: 0xffff
> Before VSA:
> do_vsmbios
> buf ilen 35441 olen60466
> buf 00060000 *buf 186 buf[256k] 0
> buf[0x20] signature is b0:10:e6:80
> Call real_mode_switch_call_vsm
> biosint: INT# 0x15
> biosint: eax 0xbea7 ebx 0x4e53 ecx 0x10000026 edx 0x10000028
> biosint: ebp 0x15ed4 esp 0xff0 edi 0x8a71 esi 0x38
> biosint:  ip 0x5b3   cs 0x6000  flags 0x46
> biosint: gs 0x0 fs 0x0 ds 0x6000 es 0x0
> handleint21, eax 0xbea7
> biosint: INT# 0x15
> biosint: eax 0xbea4 ebx 0x4e53 ecx 0x10000026 edx 0x10000028
> biosint: ebp 0x15ed4 esp 0xfee edi 0x8a71 esi 0x38
> biosint:  ip 0x5c1   cs 0x6000  flags 0x46
> biosint: gs 0x0 fs 0x0 ds 0x6000 es 0x0
> handleint21, eax 0xbea4
> do_vsmbios: VSA2 VR signature verified
> After VSA:
> <<<WARNING>>> Graphics init...
>  <<WARNING!!!>>> VRC_VG value: 0x2808
> Finding PCI configuration type.
> PCI: Using configuration type 1
> PCI_DOMAIN: 0000 enabled
> APIC_CLUSTER: 0 enabled
> PCI: pci_scan_bus for bus 00
> PCI: 00:01.0 [1022/2080] enabled
> PCI: 00:01.1 [1022/2081] enabled
> PCI: 00:01.2 [1022/2082] enabled
> PCI: 00:0d.0 [10ec/8139] enabled
> PCI: 00:0f.0 [1022/2090] enabled
> PCI: 00:0f.2 [1022/209a] enabled
> PCI: 00:0f.3 [1022/2093] enabled
> PCI: 00:0f.4 [1022/2094] enabled
> PCI: 00:0f.5 [1022/2095] enabled
> PCI: 00: 0f.6 [1022/2096] enabled
> PCI: 00:0f.7 [1022/2097] enabled
> PCI: pci_scan_bus returning with max=000
> done
> Allocating resources...
> Reading resources...
> Done reading resources.
> Setting resources...
> PCI: 00: 01.1 10 <- [0x00fd000000 - 0x00fdffffff] mem
> PCI: 00:01.1 14 <- [0x00fe000000 - 0x00fe003fff] mem
> PCI: 00:01.1 18 <- [0x00fe004000 - 0x00fe007fff] mem
> PCI: 00:01.1 1c <- [0x00fe008000 - 0x00fe00bfff] mem
> PCI: 00:01.1 20 <- [0x00fe00c000 - 0x00fe00ffff] mem
> PCI: 00:01.2 10 <- [0x00fe010000 - 0x00fe013fff] mem
> PCI: 00:0d.0 10 <- [0x0000001000 - 0x00000010ff] io
> PCI: 00:0d.0 14 <- [0x00fe019000 - 0x00fe0190ff] mem
> PCI: 00:0f.0 10 <- [0x0000001cb0 - 0x0000001cb7] io
> PCI: 00:0f.0 14 <- [0x0000001400 - 0x00000014ff] io
> PCI: 00:0f.0 18 <- [0x0000001c00 - 0x0000001c3f] io
> PCI: 00:0f.0 1c <- [0x0000001c80 - 0x0000001c9f] io
> PCI: 00:0f.0 20 <- [0x0000001800 - 0x000000187f] io
> PCI: 00:0f.0 24 <- [0x0000001c40 - 0x0000001c7f] io
> PCI: 00:0f.2 20 <- [0x0000001ca0 - 0x0000001caf] io
> PCI: 00:0f.3 10 <- [0x0000001880 - 0x00000018ff] io
> PCI: 00:0f.4 10 <- [0x00fe016000 - 0x00fe016fff] mem
> PCI: 00:0f.5 10 <- [0x00fe017000 - 0x00fe017fff] mem
> PCI: 00:0f.6 10 <- [0x00fe014000 - 0x00fe015fff] mem
> PCI: 00:0f.7 10 <- [0x00fe018000 - 0x00fe018fff] mem
> Done setting resources.
> Done allocating resources.
> Enabling resources...
> PCI: 00:01.0 cmd <- 145
> PCI: 00:01.1 subsystem <- 00/00
> PCI: 00:01.1 cmd <- 142
> PCI: 00:01.2 cmd <- 142
> PCI: 00: 0d.0 cmd <- 143
> cs5536: cs5536_pci_dev_enable_resources()
> PCI: 00:0f.0 cmd <- 149
> PCI: 00:0f.2 cmd <- 141
> PCI: 00:0f.3 cmd <- 141
> PCI: 00:0f.4 cmd <- 142
> PCI: 00:0f.5 cmd <- 142
> PCI: 00: 0f.6 cmd <- 142
> PCI: 00:0f.7 cmd <- 142
> done.
> Initializing devices...
> Root Device init
> Norwich ENTER init
> Norwich EXIT init
> PCI: 00:01.0 init
> PCI: 00:01.1 init
> APIC_CLUSTER: 0 init
> Initializing CPU #0
> CPU: vendor AMD device 5a2
> CPU: family 05, model 0a, stepping 02
> model_lx_init
> Enabling cache
> A20 (0x92): 2
> A20 (0x92): 2
> CPU model_lx_init DONE
> CPU #0 Initialized
> PCI: 00:01.2 init
> PCI: 00: 0d.0 init
> PCI: 00:0f.0 init
> cs5536: southbridge_init
> RTC Init
> rct_init finished
> cs5536: southbridge_init: enable_ide_nand_flash is 36
> Disabling VPCI device: 0x0000106C
> Disabling VPCI device: 0x00001075
> Disabling VPCI device: 0x0000107E
> Disabling VPCI device: 0x00001087
> Disabling VPCI device: 0x00001090
> Disabling VPCI device: 0x00001099
> Disabling VPCI device: 0x000010A2
> Disabling VPCI device: 0x000010AB
> PCI: 00:0f.2 init
> PCI: 00:0f.3 init
> PCI: 00:0f.4 init
> PCI: 00:0f.5 init
> PCI: 00:0f.6 init
> PCI: 00:0f.7 init
> Devices initialized
> Copying IRQ routing tables to 0xf0000...done.
> Verifing copy of IRQ routing tables at 0xf0000...done
> Checking IRQ routing table consistency...
> check_pirq_routing_table() - irq_routing_table located at: 0x000f0000
> /home/otavio/LinuxBIOSv2/src/arch/i386/boot/pirq_routing.c:    
> 36:check_pirq_routing_table() - checksum is: 0x00 but should be: 0xfd
> done.
> write_pirq_routing_table(8000785C, BAAA)
> PIR Entry 0 Dev/Fn: 8 Slot: 0
> INT: A bitmap: 400 PIRQ: 10
> INT: B bitmap: 0 PIRQ: 0
> INT: C bitmap: 0 PIRQ: 0
> INT: D bitmap: 0 PIRQ: 0
> Assigning IRQ 10 to 0: 1.1
>   Readback = 10
> Assigning IRQ 10 to 0:1.2
>   Readback = 10
> PIR Entry 1 Dev/Fn: 78 Slot: 0
> INT: A bitmap: 400 PIRQ: 10
> INT: B bitmap: 400 PIRQ: 10
> INT: C bitmap: 400 PIRQ: 10
> INT: D bitmap: 800 PIRQ: 11
> Assigning IRQ 10 to 0:f.3
>   Readback = 10
> Assigning IRQ 11 to 0:f.4
>   Readback = 11
> Assigning IRQ 11 to 0:f.5
>   Readback = 11
> PIR Entry 2 Dev/Fn: 68 Slot: 1
> INT: A bitmap: 400 PIRQ: 10
> INT: B bitmap: 400 PIRQ: 10
> INT: C bitmap: 800 PIRQ: 11
> INT: D bitmap: 400 PIRQ: 10
> Assigning IRQ 10 to 0:d.0
>   Readback = 10
> PIR Entry 3 Dev/Fn: 70 Slot: 2
> INT: A bitmap: 400 PIRQ: 10
> INT: B bitmap: 800 PIRQ: 11
> INT: C bitmap: 400 PIRQ: 10
> INT: D bitmap: 400 PIRQ: 10
> PIR Entry 4 Dev/Fn: 58 Slot: 3
> INT: A bitmap: 800 PIRQ: 11
> INT: B bitmap: 400 PIRQ: 10
> INT: C bitmap: 400 PIRQ: 10
> INT: D bitmap: 400 PIRQ: 10
> PIR Entry 5 Dev/Fn: 60 Slot: 4
> INT: A bitmap: 400 PIRQ: 10
> INT: B bitmap: 400 PIRQ: 10
> INT: C bitmap: 400 PIRQ: 10
> INT: D bitmap: 800 PIRQ: 11
> Moving GDT to 0x500...ok
> Adjust low_table_end from 0x00000530 to 0x00001000
> Adjust rom_table_end from 0x000f0400 to 0x00100000
> Wrote linuxbios table at: 00000530 - 000006c4  checksum fba9
> 
> Welcome to elfboot, the open sourced starter.
> January 2002, Eric Biederman.
> Version 1.3
> 
> rom_stream: 0xfff89000 - 0xfffeffff
> Found ELF candidate at offset 0
> header_offset is 0
> Try to load at offset 0x0
> New segment addr 0x100000 size 0x306e0 offset 0xc0 filesize 0xb248
> (cleaned up) New segment addr 0x100000 size 0x306e0 offset 0xc0 filesize 
> 0xb248
> New segment addr 0x1306e0 size 0x48 offset 0xb320 filesize 0x48
> (cleaned up) New segment addr 0x1306e0 size 0x48 offset 0xb320 filesize 0x48
> Dropping non PT_LOAD segment
> Dropping non PT_LOAD segment
> Loading Segment: addr: 0x0000000000100000 memsz: 0x00000000000306e0 
> filesz: 0x000000000000b248
> Clearing Segment: addr: 0x000000000010b248 memsz: 0x0000000000025498
> Loading Segment: addr: 0x00000000001306e0 memsz: 0x0000000000000048 
> filesz: 0x0000000000000048
> Jumping to boot code at 0x108bdc
> FILO version 0.5 (otavio at labdes15) Wed Jun 20 08:56:24 BRT 2007
> collect_linuxbios_info: Searching for LinuxBIOS tables...
> find_lb_table: Found canidate at: 00000530
> find_lb_table: header checksum o.k.
> find_lb_table: table checksum o.k.
> find_lb_table: record count o.k.
> collect_linuxbios_info: Found LinuxBIOS table at: 00000530
> convert_memmap: 0x00000000000000 0x00000000001000 16
> convert_memmap: 0x00000000001000 0x0000000009f000 1
> convert_memmap: 0x000000000f0000 0x00000000010000 16
> convert_memmap: 0x00000000100000 0x0000000f6e0000 1
> Press <Enter> for default boot, or <Esc> for boot prompt... 2 1 
> timed out
> boot: hda1:/boot/vmlinuz root=/dev/hda1 initrd=/boot/initrd 
> console=tty0  console=ttyS0,115200
> hda: LBA 40GB: ST340014A                              
> Mounted ext2fs
> Found Linux version 2.6.8-2-386 (horms at tabatha.lab.ultramonkey.org 
> <mailto:horms at tabatha.lab.ultramonkey.org>) #1 Thu May 19 17:40:50 JST 
> 2005 (protocol 0x203) (loadflags 0x1) bzImage.
> init_linux_params: Setting up paramters at 0x90000
> set_memory_size: 0000000000001000 - 00000000000a0000
> set_memory_size: 0000000000100000 - 000000000f7e0000
> set_memory_size: ramtop=0xf7e0000
> set_memory_size: ext_mem_k=64512, alt_mem_k=252800
> parse_command_line: original command line: "root=/dev/hda1 
> initrd=/boot/initrd console=tty0  console=ttyS0,115200"
> parse_command_line: kernel command line at 0x91000
> parse_command_line: initrd=/boot/initrd
> parse_command_line: kernel command line (48 bytes): "root=/dev/hda1 
> console=tty0 console=ttyS0,115200"
> load_linux_kernel: offset=0x1600 addr=0x100000 size=0x10a8cb
> Loading kernel... ok
> load_initrd: start=0xf391000 end=0xf7af000
> Loading initrd... ok
> start_linux: eip=0x100000
> Jumping to entry point...
> Linux version 2.6.8-2-386 (horms at tabatha.lab.ultramonkey.org 
> <mailto:horms at tabatha.lab.ultramonkey.org>) (gcc version 3.3.5 (Debian 
> 1:3.3.5-12)) #1 Thu May 19 17:40:50 JST 2005
> 
> BIOS-provided physical RAM map:
> 
>  BIOS-e820: 0000000000001000 - 00000000000a0000 (usable)
> 
>  BIOS-e820: 0000000000100000 - 000000000f7e0000 (usable)
> 
> 247MB LOWMEM available.
> 
> DMI not present.
> 
> ACPI: Unable to locate RSDP
> 
> Built 1 zonelists
> 
> Kernel command line: root=/dev/hda1 console=tty0 console=ttyS0,115200
> 
> No local APIC present or hardware disabled
> 
> Initializing CPU#0
> 
> PID hash table entries: 1024 (order 10: 8192 bytes)
> 
> Detected 431.857 MHz processor.
> 
> Using tsc for high-res timesource
> 
> Console: colour dummy device 80x25
> 
> Dentry cache hash table entries: 32768 (order: 5, 131072 bytes)
> 
> Inode-cache hash table entries: 16384 (order: 4, 65536 bytes)
> 
> Memory: 244168k/253824k available (1336k kernel code, 8916k reserved, 
> 732k data, 204k init, 0k highmem)
> 
> Checking if this processor honours the WP bit even in supervisor mode... 
> Ok.
> 
> Calibrating delay loop... 845.82 BogoMIPS
> 
> Security Scaffold v1.0.0 initialized
> 
> Mount-cache hash table entries: 512 (order: 0, 4096 bytes)
> 
> CPU: L1 I Cache: 64K (32 bytes/line), D cache 64K (32 bytes/line)
> 
> CPU: L2 Cache: 128K (32 bytes/line)
> 
> CPU: AMD Geode(TM) Integrated Processor by AMD PCS stepping 02
> 
> Checking 'hlt' instruction... OK.
> 
> Checking for popad bug... OK.
> 
> checking if image is initramfs...it isn't (ungzip failed); looks like an 
> initrd
> 
> Freeing initrd memory: 4216k freed
> 
> NET: Registered protocol family 16
> 
> EISA bus registered
> 
> PCI: Using configuration type 1
> 
> mtrr: v2.0 (20020519)
> 
> ACPI: Subsystem revision 20040326
> 
> ACPI: Interpreter disabled.
> 
> Linux Plug and Play Support v0.97 (c) Adam Belay
> 
> PnPBIOS: Scanning system for PnP BIOS support...
> 
> PnPBIOS: PnP BIOS support was not detected.
> 
> PCI: Probing PCI hardware
> 
> PCI: Probing PCI hardware (bus 00)
> 
> PCI: Using IRQ router default [1022/2090] at 0000:00:0f.0
> 
> VFS: Disk quotas dquot_6.5.1
> 
> Dquot-cache hash table entries: 1024 (order 0, 4096 bytes)
> 
> devfs: 2004-01-31 Richard Gooch ( rgooch at atnf.csiro.au 
> <mailto:rgooch at atnf.csiro.au>)
> 
> devfs: boot_options: 0x0
> 
> Initializing Cryptographic API
> 
> isapnp: Scanning for PnP cards...
> 
> isapnp: No Plug & Play device found
> 
> Serial: 8250/16550 driver $Revision: 1.90 $ 54 ports, IRQ sharing enabled
> 
> ttyS0 at I/O 0x3f8 (irq = 4) is a 16550A
> 
> RAMDISK driver initialized: 16 RAM disks of 8192K size 1024 blocksize
> 
> i8042.c : Can't read CTR while initializing i8042.
> 
> EISA: Probing bus 0 at eisa0
> 
> Cannot allocate resource for EISA slot 1
> 
> EISA: Detected 0 cards.
> 
> NET: Registered protocol family 2
> 
> IP: routing cache hash table of 2048 buckets, 16Kbytes
> 
> TCP: Hash tables configured (established 16384 bind 32768)
> 
> NET: Registered protocol family 8
> 
> NET: Registered protocol family 20
> 
> RAMDISK: cramfs filesystem found at block 0
> 
> RAMDISK: Loading 4216 blocks [1 disk] into ram disk... |/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\done. 
> 
> 
> VFS: Mounted root (cramfs filesystem) readonly.
> 
> Freeing unused kernel memory: 204k freed
> 
> vesafb: probe of vesafb0 failed with error -6
> 
> NET: Registered protocol family 1
> 
> Uniform Multi-Platform E-IDE driver Revision: 7.00alpha2
> 
> ide: Assuming 33MHz system bus speed for PIO modes; override with idebus=xx
> 
> hda: ST340014A, ATA DISK drive
> 
> Using anticipatory io scheduler
> 
> ide0 at 0x1f0-0x1f7,0x3f6 on irq 14
> 
> hda: max request size: 128KiB
> 
> hda: 78165360 sectors (40020 MB) w/2048KiB Cache, CHS=65535/16/63
> 
>  /dev/ide/host0/bus0/target0/lun0: p1 p2 < p5 >
> 
> 

-- 
Marc Jones
Senior Software Engineer
(970) 226-9684 Office
mailto:Marc.Jones at amd.com
http://www.amd.com/embeddedprocessors