BCM_SDK命令

启动bcm的sdk,会进入一个类似shell的交互界面，在其中如入命令，可以配置交换机芯片。
本文主要记录一下命令：
　　　1.端口限速命令
　　　2.链路聚合命令
　　　3.i2c控制命令

启动方法：
    /tmp/bcm # ./bcm.user.proxy
“？”显示帮助信息。直接输入会显示出sdk对所有型号芯片支持的命令，以及当前所支持的命令。
BCM.0> ?
help: "??" or "help" for summary
Commands common to all modes:
?              ??             ASSert         BackGround     BCM            
BCMX           Board          break          CASE           CD             
CONFig         CONSole        CoPy           DATE           DeBug          
DeBugMod       DELAY          DEVice         DIR            DISPatch       
Echo           EXIT           EXPR           FLASHINIT      FLASHSYNC      
FOR            Help           HISTory        IF             JOBS           
KILL           LOCal          LOG            LOOP           LS             
MKDIR          MODE           MORe           MoVe           NOEcho         
Pause          PRINTENV       PWD            QUIT           RCCache        
RCLoad         REBOOT         REName         RESET          RM             
RMDIR          SalProfile     SAVE           SET            SETENV         
SHell          SLeep          TIME           Version        
Commands for current mode:
AGE            Attach         Auth           BIST           BPDU           
BTiMeout       CABLEdiag      CACHE          CellHDR        CHecK          
CLEAR          COLOR          COMBO          COS            CounTeR        
CustomSTAT     DELete         DETach         DMA            DmaRomTest     
DMIRror        DSCP           DTAG           Dump           EditReg        
EGRess         EthernetAV     FieldProcessor Getreg         GPORT          
H2HIGIG        H2HIGIG2       HASH           HeaderMode     INIT           
Insert         INTR           IPFIX          IPG            KNETctrl       
L2             L2MODE         LED            LINKscan       LISTmem        
Listreg        LOOKup         MCAST          MemSCAN        MemWatch       
MIRror         MODify         ModMap         Modreg         MTiMeout       
MultiCast      OAM            PacketWatcher  PBMP           PHY            
POP            PORT           PortRate       PortSampRate   PortStat       
PROBE          PUSH           PUTREG         PVlan          RATE           
RateBw         RegCMp         REMove         RXCfg          RXInit         
RXMon          SCHan          SEArch         Setreg         SHOW           
SOC            STACKMode      StackPortGet   StackPortSet   STG            
STiMeout       STKMode        SwitchControl  SystemSnake    TestClear      
TestList       TestMode       TestParameters TestRun        TestSelect     
TRUNK          TX             TXCount        TXSTArt        TXSTOp         
VLAN           WARMBOOT       Write          XAUI    

### 1.portrate设置端口限速
BCM.0> portrate ?
Usage (PortRate): Set/Display port rate metering characteristics.
Parameters: <pbm> [ingress|egress|pause [arg1 arg2]]
            For Ingress or Egress: arg1 is rate, arg2 is max_burst
            For Pause: arg1 is pause_thresh, arg2 is resume_thresh
            rate is in kilobits (1000 bits) per second
            max_burst and xxx_thresh are in kilobits (1000 bits)
# 设置端口1的入口速率最大为1000，burst是有关qos相关的参数。
BCM.0> portrate ge0 ingress 1000  
PortRate: Error: missing port burst size
BCM.0> portrate ge0 ingress 1000 1000
# 显示所设置的端口参数，可以看出与设置的有些不同，因该是进行了转化
BCM.0> portrate
 ge0:   Ingress meter:     1024 kbps     1031 kbits max burst.

### 2.trunk 设置链路聚合
BCM.0> trunk
Usage (TRUNK): Usages:
          trunk init
                - Initialize trunking function
          trunk deinit
                - Deinitialize trunking function
          trunk add <Id=val> <Rtag=val> <Pbmp=val>
                - Add ports to a trunk
          trunk remove <Id=val> <Pbmp=val>
                - Remove ports from a trunk
          trunk show [<Id=val>]
                - Display trunk information
          trunk egress [<Id=val>] <Pbmp=val>
                - Set egress ports for trunk
          trunk mcast <Id=val> <Mac=val> <Vlan=val>
                - Join multicast to a trunk
          trunk hash set <Pbmp=val> <HashValue=val>
                - Set ingress port hash value to select egress port of a trunk
          trunk hash get <Pbmp=val>
                - Get ingress port programmable hash value
          trunk psc <Id=val> <Rtag=val>
                - Change Rtag (for testing ONLY)
# rtag指定链路聚合的负载分担方式。当设置2台交换机都配置为srcmac,destmac的时候，
# 再通过测试卡进行发包测试，发送和接收都不会丢包，
# 但是2两台交换机中有一台配置为srcdestmac的时候就会丢一半的包，正在查原因。
BCM.0> trunk add id=1 rtag=1 pbmp=ge0,ge1
BCM.0> trunk add id=2 rtag=2 pbmp=ge2,ge3 
BCM.0> trunk add id=3 rtag=3 pbmp=ge4,ge5 
# 查看链路聚合的设置
BCM.0> trunk show
Device supports 8 trunk groups:
  8 front panel trunks (0..7), 8 ports/trunk
trunk 1: (front panel, 2 ports)=ge0,ge1 dlf=any mc=any ipmc=any psc=srcmac (0x1)
trunk 2: (front panel, 2 ports)=ge2,ge3 dlf=any mc=any ipmc=any psc=destmac (0x2)
trunk 3: (front panel, 2 ports)=ge4,ge5 dlf=any mc=any ipmc=any psc=srcdestmac (0x3)
### 3.i2c命令
BCM.0> i2c ?
Usage (I2C): Usages:
        i2c probe [pio|intr] [speed] [quiet]
            - probe devices on I2C bus and build device tree.
              If "intr" or "pio" is specified, change to that bus mode.
              If a valid speed is specified, change the bus to that speed.
              If "quiet" is specified, suppresses probe output.
        i2c scan [pio|intr] [saddr] [quiet]
            - Scan devices on I2C bus and display the device list.
        i2c log 
            - show I2C bus transaction log.
        i2c backlog 
            - show I2C bus transaction log (in reverse order).
        i2c clearlog 
            - reset I2C bus transaction log.
        i2c reset
            - reset I2C bus controller core.
        i2c speeds
            - show supported I2C bus controller clock rates.
        i2c show
            - show devices found and their attributes.
        i2c read saddr comm len 
            - generic interface to read devices, do probe first 
        i2c readb saddr len 
            - generic interface to read devices without register based access, do probe first
        i2c write saddr comm [data] 
            - generic interface to write a byte to devices, do probe first
            - comm is data when writing directly otherwise command register
# 操作i2c之前，都需要先输入i2c probe 
BCM.0> i2c probe
Yet to Implement soc_i2c_write_word_data
Yet to Implement soc_i2c_write_word_data
I2C: detected 2 devices
# 扫描i2c设备
BCM.0> i2c scan
I2C device found at slave address 0X20 (lpt0: PCF8574 MUX control)
I2C device found at slave address 0X32 (Unknown)
I2C device found at slave address 0X48 (temp0: LM75 Temperature Sensor)
I2C device found at slave address 0X77 (PCA9548 MUX)
# 0x32的设备地址是SD2405时钟芯片。读取时钟芯片秒寄存器的值
BCM.0> i2c read 0x32 0x00 1 
00: 18
# 读取秒寄存器和分寄存器的值
BCM.0> i2c read 0x32 0x00 2
00: 31 35

查看sdk/src/appl/diag/目录中的文件就可以了解对应的命令的实现。
例如i2c_cmds.c文件。