当前版本： 1.0
完成日期： 2011-2-23
作者： Jack Tan
Email: jiankemeng@gmail.com
版权声明： 转载请注明出处，商业用途请联系作者
1. CFE Boot Log
CFE version 1.2.4 for SWARM (64bit,MP,BE,MIPS) Build Date: Tue Aug 30 06:45:43 PDT 2005 (mpl@lc-sj1-092) Copyright (C) 2000,2001,2002,2003,2004,2005 Broadcom Corporation. Initializing Arena. Initializing PCI. [normal] PCI bus 0 slot 1/0: Warning: SipReady already set HyperTransport not initialized: InitDone not set PCI bus 0 slot 0/0: SiByte, Inc. BCM1250 PCI Host Bridge (host bridge, rev 0x02) PCI bus 0 slot 6/0: unknown vendor 0x1317 product 0x0985 (ethernet network, rev 0x11) PCI bus 0 slot 7/0: unknown vendor 0x1045 product 0xc861 (USB serial bus, interface 0x10, rev 0x10) Initializing Devices. SWARM board revision 3 sbeth: found phy 1, vendor 000818 part 0E sbeth: found phy 1, vendor 000818 part 0E PCIIDE: 0 controllers found Config switch: 2 CPU: BCM1250 B2 L2 Cache Status: OK Wafer ID: 0x8FC26019 [Lot 9200, Wafer 19] Manuf Test: Bin A [2CPU_FI_FD_F2 (OK)] SysCfg: 0000000028DB0800 [PLL_DIV: 16, IOB0_DIV: CPUCLK/4, IOB1_DIV: CPUCLK/3] CPU type 0x1040102: 800MHz Total memory: 0x10000000 bytes (256MB) Total memory used by CFE: 0x8FE9C000 - 0x8FFFFD00 (1457408) Initialized Data: 0x8FEF69A0 - 0x8FEFD650 (27824) BSS Area: 0x8FEFD650 - 0x8FEFDD00 (1712) Local Heap: 0x8FEFDD00 - 0x8FFFDD00 (1048576) Stack Area: 0x8FFFDD00 - 0x8FFFFD00 (8192) Text (code) segment: 0x8FE9C000 - 0x8FEF608D (368781) Boot area (physical): 0x0FE5B000 - 0x0FE9B000 Relocation Factor: I:F029C000 - D:F029C000 Automatic startup canceled via Ctrl-C
2. Config to bootstrap
2.0 Display devices
CFE> show devices Device Name Description ------------------- --------------------------------------------------------- uart0 Si Byte DUART at 0x10060000 channel 0 promice0 Prom ICE AI2 Serial Port at 0x1FDFFC00 eeprom0 Microchip 24LC128 EEPROM on SMBus channel 1 dev 0x51 uart1 Si Byte DUART at 0x10060000 channel 1 flash0 New CFI flash at 1FC00000 size 2048KB flash1 New CFI flash at 1F800000 size 2048KB eeprom1 Microchip 24LC128 EEPROM on SMBus channel 0 dev 0x50 eth0 Si Byte Ethernet at 0x10064000 (00-02-4C-FE-03-E6) eth1 Si Byte Ethernet at 0x10065000 (00-02-4C-FE-03-E7) ide0.0 IDE disk unit 0 at 100B3E00 pcmcia0 PCMCIA ATA disk unit 0 at 11000000 clock0 ST M41T81 RTC on SMBus channel 1 dev 0x68 tcpconsole0 TCP Console
2.1 Config network
CFE> ifconfig -auto eth0
or:
CFE> ifconfig -addr=192.168.29.128 -gw=192.168.29.1 -mask=255.255.255.0 eth0
Options
-auto Configure interface automatically via DHCP
-off Deactivate the specified interface
-addr=* Specifies the IP address of the interface
-mask=* Specifies the subnet mask for the interface
-gw=* Specifies the gateway address for the interface
-dns=* Specifies the name server address for the interface
-domain=* Specifies the default domain for name service queries
-speed=* Sets the interface speed (auto,10fdx,10hdx,100fdx,
100hdx,1000fdx,1000hdx)
-loopback=* Sets the loopback mode (off,internal,external) External
loopback causes the phy to be placed in loopback mode
-hwaddr=* Sets the hardware address (overrides environment)
2.2 Load & execute
CFE support loading ELF, SREC, uboot image (uImage) and binary format.
CFE> load -elf 192.168.29.11:vlm-boards/8336/vmlinux # load vmlinux at virtual 0x2000 0000 via tftp
CFE> load -srec 192.168.29.11:vlm-boards/8336/vmlinux.srec # load vmlinux.srec at virtual 0x2000 0000 via tftp
CFE> load -uboot 192.168.29.11:vlm-boards/8336/uImage # load uImage at virtual 0x2000 0000 via tftp
Options:
-raw Load the file as a raw binary (default)
-z Load compressed file
-tftp Load the file using the TFTP protocol (default)
-fatfs Load the file from a FAT file system
-rawfs Load the file from an unformatted file system
-http Load the file using the HTTP protocol
-max=* Specify the maximum number of bytes to load (raw only)
-addr=* Specify the load address (hex) (raw only)
-noclose Don't close network link before executing program
CFE> go # go to the start address(entry address) to execute
CFE> go 0x804117f0
CFE support loading file from devices. We can use following command to load kernel from a IDE disk:
CFE> load -elf -fatfs ide0.0:vmlinux
Generally, we use ‘boot’ to load the kernel and go to the entry address (load + go):
CFE> boot -elf 192.168.29.11:vlm-boards/8336/vmlinux Loader:elf Filesys:tftp Dev:eth0 File:192.168.29.11:vlm-boards/8336/vmlinux Options:(null) Loading: 0xffffffff80100000/4399238 0xffffffff80532086/200090 Entry at 0x804117f0 Closing network. Starting program at 0x804117f0 Linux version 2.6.26-rc7-WR3.0zz_standard (root@Pek-JTan-d1) (gcc version 4.1.2 (Wind River Linux Sourcery G++ 4.1-91)) #2 PREEMPT Wed Jun 25 12:52:52 CST 2008 console [early0] enabled CPU revision is: 01040102 (SiByte SB1) FPU revision is: 000f0102 Checking for the multiply/shift bug... no. Checking for the daddiu bug... no. Broadcom SiByte BCM1250 B2 @ 800 MHz (SB1 rev 2) Board type: SiByte BCM91250A (SWARM) This kernel optimized for board runs with CFE Determined physical RAM map: memory: 000000000fe9be00 @ 0000000000000000 (usable) Initrd not found or empty - disabling initrd ......
2.3 Setting environment varible
CFE use STARTUP as the automatic bootstrap commands and LINUX_CMDLINE as the kernel arguments::
CFE> printenv Variable Name Value -------------------- -------------------------------------------------- BOOT_CONSOLE uart0 ETH0_HWADDR 00-02-4c-fe-03-e6 ETH1_HWADDR 00-02-4c-fe-03-e7 STARTUP ifconfig -auto eth0; boot -srec 192.168.29.11:/vlm-boards/8336/kernel LINUX_CMDLINE root=/dev/nfs rw nfsroot=192.168.29.11:/export/pxeboot/vlm-boards/8336/rootfs ip=dhcp CPU_TYPE 1250 CPU_SPEED 800 CPU_REVISION B2 CPU_NUM_CORES 2 CFE_VERSION 1.2.4 CFE_BOARDNAME SWARM CFE_MEMORYSIZE 256
After booting up, CFE automatically execute “ifconfig -auto eth0; boot -srec 192.168.29.11:/vlm-boards/8336/kernel”
So, maybe you need to reset the LINUX_CMDLINE:
CFE> setenv LINUX_CMDLINE "root=/dev/nfs rw nfsroot=192.168.29.11:/export/pxeboot/vlm-boards/8336/rootfs ip=192.168.29.148"
If you want to store the environment variable permanently in the NVRAM, you need to use the -p option.
-p Store environment variable permanently in the NVRAM device, if present
-ro Causes variable to be read-only (cannot be changed in the future, implies -p)
3. Memory commands
3.1 Disassemble instructions
CFE> u 0xbfc01000 5 BFC01000: 24040000 addiu a0,zero,#0 BFC01004: 0000328c syscall #202 BFC01008: 1000ffff beq zero,zero,0xffffffffbfc01008 BFC0100C: 00000000 sll zero,zero,#0 BFC01010: 3c08bfc0 lui t0,#49088
3.2 Dump memory
CFE> d -b 0xbfc01000 0x30 FFFFFFFFBFC01000: 24 04 00 00 00 00 32 8C 10 00 FF FF 00 00 00 00 $.....2......... FFFFFFFFBFC01010: 3C 08 BF C0 01 00 00 08 00 00 00 00 27 BB FD B0 <...........'... FFFFFFFFBFC01020: 00 1B D8 FA 00 1B D8 F8 FF 60 00 40 FF 61 00 48 .........`.@.a.H CFE> d -h 0xbfc01000 16 FFFFFFFFBFC01000: 2404 0000 0000 328C 1000 FFFF 0000 0000 $.....2......... FFFFFFFFBFC01010: 3C08 BFC0 0100 <..... CFE> d -q 0xbfc01000 16 FFFFFFFFBFC01000: 240400000000328C 1000FFFF00000000 $.....2......... FFFFFFFFBFC01010: 3C08BFC001000008 <.....
3.3 Modify memory
CFE> e -w 0x80000000 0x12345678
CFE> d -w 0x80000000
FFFFFFFF80000000: 12345678 277BDE48 03600008 241A0008 .4Vx'{.H.`..$...
FFFFFFFF80000010: 00000000 00000000
If you omit the data, CFE will enter “memory edit” mode:
CFE> e -w 0x80000000 Type '.' to exit, '-' to back up, '=' to dump memory. FFFFFFFF80000000: [12345678]:
3.4 Fill memory
Usage:
f [-b|-h|-w|-q] addr length pattern
CFE> f -h 80000000 0x10 0x55aa CFE> d -h 80000000 0x30 FFFFFFFF80000000: 55AA 55AA 55AA 55AA 55AA 55AA 55AA 55AA U.U.U.U.U.U.U.U. FFFFFFFF80000010: 55AA 55AA 55AA 55AA 55AA 55AA 55AA 55AA U.U.U.U.U.U.U.U. FFFFFFFF80000020: 0000 0000 0000 0000 0000 0000 0000 0000 ................
4. Flash commands
4.1 show flash
This command is to display information of a flash device:
CFE> show flash flash0 FLASH: Base 000000001FC00000 size 00200000 type 03(Flash) flags 00000001 NVRAM: Not supported by this flash
4.2 update flash
To update flash we use ‘flash’ command.
Under most circumstances, the file to be written to flash must be the output of the mkflashimage program in the cfe/hosttools directory.The mkflashimage program writes a header on the front of the flash image that contains version information, the file’s length and a CRC to prevent inadvertently writing a bad image into the system’s boot ROM.
CFE> flash flash0 flash1 # backup flash0's data into flash1
CFE> flash -noheader 192.168.29.11:vlm-boards/8336/cfe # write data to default device flash0 via tftp
CFE> flash uart0 flash0 # read S-records from uart0 and write the data to flash0
OPTIONS
-noerase Don't erase flash before writing
-offset=* Begin programming at this offset in the flash device
-size=* Size of source device when programming from flash to flash
-noheader Override header verification, flash binary without checking
5. Miscellaneous
5.1 Reset system
CFE> reset -yes -sysreset # Full system reset CFE> reset -yes -cpu # Reset the CPUs CFE> reset -yes -softreset # Soft reset of the entire chip
5.2 Show TLB
CFE> show tlb Entry 00 C0000FFFA007E000 0000000000000000 0000000000000000 Entry 01 C0000FFFA007C000 0000000000000000 0000000000000000 Entry 02 C0000FFFA007A000 0000000000000000 0000000000000000 Entry 03 C0000FFFA0078000 0000000000000000 0000000000000000 Entry 04 C0000FFFA0076000 0000000000000000 0000000000000000 Entry 05 C0000FFFA0074000 0000000000000000 0000000000000000 ...... ......
5.3 Show PCI
CFE> show pci PCI bus 0 slot 0/0: SiByte, Inc. BCM1250 PCI Host Bridge (host bridge, rev 0x02) PCI bus 0 slot 1/0: SiByte, Inc. BCM1250 HyperTransport Host Bridge (host bridge, rev 0x02) PCI bus 0 slot 6/0: unknown vendor 0x1317 product 0x0985 (ethernet network, rev 0x11) PCI bus 0 slot 7/0: unknown vendor 0x1045 product 0xc861 (USB serial bus, interface 0x10, rev 0x10) PCI bus 1 slot 1/0: Alliance Semiconductor SP1011 HyperTransport-PCI Bridge (PCI bridge) PCI bus 2 slot 1/0: Intel product 0x1079 (ethernet network, rev 0x03) PCI bus 2 slot 1/1: Intel product 0x1079 (ethernet network, rev 0x03)
5.4 Help
CFE> help Available commands: copydisk Copy a remote disk image to a local disk device via TFTP phy set Set the value of a PHY register phy dump Dump the registers on the PHY randmemtest Tests memory using random access pattern memorytest Tests all available memory test ether Do an ethernet test, reading packets from the net test fatfs Do a FAT file system test test disk Do a disk test, read/write sectors on the disk test timer Test the timer defeature Set the state of the defeature mask map pci Define a BAR0 window available to PCI devices cpu1 Controls a test program running on CPU1 set date Set current date set time Set current time set console Change the active console device sleep Wait for some period of time loop Loop a command memtest Test memory. pci dump Dump PCI configuration space. reserve Mark a region of memory as reserved autoboot Automatic system bootstrap. batch Load a batch file into memory and execute it save Save a region of memory to a remote file via TFTP ttcp TCP test command. tcp constest tcp console test. tcp listen port listener. tcp connect TCP connection test. rlogin mini rlogin client. ping Ping a remote IP host. arp Display or modify the ARP Table. show boot Display boot block from device, show spd Display contents of memory SPD show temp Display CPU temperature show time Display current time according to RTC show agents Display list of SOC agents show soc Display SOC register contents show defeature Show the state of the defeature mask show pci Display information about PCI buses and devices show heap Display information about CFE's heap show memory Display the system physical memory map. unsetenv Delete an environment variable. ...... ...... For more information about a command, enter 'help command-name'
CFE> help show pci
SUMMARY
Display information about PCI buses and devices
USAGE
show pci [-v] [[port:]bus/dev/func]
Displays information about PCI and LDT buses and devices in the
system. If you specify a bus/dev/func triplet, only that device
will be displayed.
OPTIONS
-v Display verbose information
-init Reinitialize and rescan the PCI bus