POST(加电自检)

klaude

我们在排除SUN机器一些简易硬件故障时，可以使用POST(加电自检)来初步检测。

具体设置如下：
{1} ok setenv auto-boot? 设为false   /* 开机到ok模式 */
{1} ok setenv diag-switch? 设为true  /* 开机以诊断模式运行，从diag-device中引导diag-file */
{1} ok setenv diag-level 设为max    /* 如果是最大化自检 */
{1} ok power-off     /*  冷关机 */

手动开机，随即会自动执行POST
{1} ok setenv auto-boot? 设为false  /* 开机到ok模式 */
{1} ok show-post-results        /* 查看POST结果 */

如果POST全部通过，记得将以上参数设回原来默认值。
SUN的各种型号机器串口传回的POST信息各有不同，以下是B150的POST串口信息

Hardware Power ON
@(#)OBP 4.10.6 2003/06/06 12:30
Executing Power On SelfTest
@(#) Sun (Grover) POST 2.0.1 05:13 PM on 08/23/01
Processor Module Identification
        UltraSPARC-IIe+ (Phantom) Version 1.3
Init POST BSS
        Init System BSS
NVRAM Tests
        NVRAM Battery Detect Test
        NVRAM Scratch Addr Test
        NVRAM Scratch Data Test
DMMU TLB Tags
        DMMU TLB Tag Access Test
DMMU TLB RAM
        DMMU TLB RAM Access Test
Probe Ecache
        Probe Ecache
        Ecache Size = 0x00080000 bytes = 512 KBytes
Measure CPU Clock
        Initializing Southbridge
        Nominal CPU speed is 650 MHz
All CPU Basic Tests
        V9 Instruction Test
        CPU Tick and Tick Compare Reg Test
        CPU Soft Trap Test
        CPU Softint Reg and Int Test
All Basic MMU Tests
        DMMU Primary Context Reg Test
        DMMU Secondary Context Reg Test
        DMMU TSB Reg Test
        DMMU Tag Access Reg Test
        DMMU VA Watchpoint Reg Test
        DMMU PA Watchpoint Reg Test
        IMMU TSB Reg Test
        IMMU Tag Access Reg Test
All Basic Cache Tests
        Dcache RAM Test
        Dcache Tag Test
        Icache RAM Test
        Icache Tag Test
        Icache Next Test
        Icache Predecode Test
MCU Control & Status Regs Init
        Initializing Memory and MC registers
        DIMM 0: 512 MBytes = 0x20000000 bytes
        DIMM 1: 512 MBytes = 0x20000000 bytes
        DIMM 2: 0 MBytes = 0x00000000 bytes
        DIMM 3: 0 MBytes = 0x00000000 bytes
        Found 2 DIMMs in bank 0
        Bank 0: 1024 MBytes
        DIMM0 is a 32M x 8 device
        DIMM1 is a 32M x 8 device
        MC0 = 0x00000000.96a0cf06
        MC1 = 0x00000000.80008000
        MC2 = 0x00000000.c33300ee
        MC3 = 0x00000000.006008cf
        CPU MODULE upa_config is 0x0000003a.00000000
Ecache Tests
        Displacement Flush Ecache
        Ecache RAM Addr Test
        Ecache Tag Addr Test
        Ecache RAM Test
        Ecache Tag Test
Memory Init
        Malloc Post Memory
        Memory Addr Check w/o Ecache
        Load Post In Memory
        Run POST from MEM
        .........
        Map PROM/STACK/NVRAM in DMMU
        Update Master Stack/Frame Pointers
All FPU Basic Tests
        FPU Regs Test
        FPU Move Regs Test
        FPU State Reg Test
        FPU Functional Test
        FPU Trap Test
All Basic IOMMU Tests
        PIO Decoder and BCT Test
        PCI Byte Enable Test
        CPU's IOMMU Regs Test
        CPU's IOMMU RAM Addr Test
        CPU's IOMMU CAM Address Test
        IOMMU TLB Compare Test
        IOMMU TLB Flush Test
        PBMA PCI Config Space Regs Test
        PBMA Control/Status Reg Test
        PBMA Diag Reg Test
        CPU's IO Regs Test
All Advanced CPU Tests
        DMMU Hit/Miss Test
        IMMU Hit/Miss Test
        DMMU Little Endian Test
        IU ASI Access Test
        FPU ASI Access Test
        Ecache Thrash Test
All CPU Error Reporting Tests
        CPU Data Access Trap Test
        CPU Addr Align Trap Test
        DMMU Access Priv Page Test
        DMMU Write Protected Page Test
Audio Tests
        Map Audio Device PCI Config Registers Test
        Audio Device ID and Vendor ID (0x545110b9) Test
        Init Audio Device IO Registers Test
        Audio Device Memory Registers Test
Memory Tests
        Init Memory
                Info : 512MB at Dimm Slot 0
                Start Addr: 0x00000000.00800000  Size: 504 MBytes
Init with 0x00000000.00000000:
........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
                Info : 512MB at Dimm Slot 1
                Start Addr: 0x00000000.40000000  Size: 512 MBytes
Init with 0x00000000.00000000:
................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
        Memory Addr Check with Ecache Test
                Info : 512MB at Dimm Slot 0
                Start Addr: 0x00000000.00800000  Size: 504 MBytes
Write 0xffffffff.ffffffff: ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
Read: ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
Write 0xaaaaaaaa.aaaaaaaa: ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
Read: ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
Write 0x55555555.55555555: ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
Read: ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
Write 0x00000000.00000000: ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
Read: ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
                Info : 512MB at Dimm Slot 1
                Start Addr: 0x00000000.40000000  Size: 512 MBytes
Write 0xffffffff.ffffffff: ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
Read: ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
Write 0xaaaaaaaa.aaaaaaaa: ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
Read: ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
Write 0x55555555.55555555: ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
Read: ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
Write 0x00000000.00000000: ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
Read: ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
        Block Memory Addr Test
                Info : 512MB at Dimm Slot 0
                Start Addr: 0x00000000.00800000  Size: 504 MBytes
                Info : 512MB at Dimm Slot 1
                Start Addr: 0x00000000.40000000  Size: 512 MBytes
        Block Memory Check Test
                Info : 512MB at Dimm Slot 0
                Start Addr: 0x00000000.00800000  Size: 504 MBytes
Write 0x33333333.33333333 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
Read ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
Write 0x55555555.55555555 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
Read ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
Write 0xcccccccc.cccccccc ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
Read ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
Write 0xaaaaaaaa.aaaaaaaa ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
Read ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
                Info : 512MB at Dimm Slot 1
                Start Addr: 0x00000000.40000000  Size: 512 MBytes
Write 0x33333333.33333333 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
Read ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
Write 0x55555555.55555555 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
Read ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
Write 0xcccccccc.cccccccc ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
Read ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
Write 0xaaaaaaaa.aaaaaaaa ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
Read ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
        ECC Memory Addr Test
                Info : 512MB at Dimm Slot 0
                Start Addr: 0x00000000.00800000  Size: 504 MBytes
                Info : 512MB at Dimm Slot 1
                Start Addr: 0x00000000.40000000  Size: 512 MBytes
        ECC Blk Memory Test
                Info : 512MB at Dimm Slot 0
                Start Addr: 0x00000000.00800000  Size: 504 MBytes
Write 0xa5a5a5a5.a5a5a5a5 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
Read ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
Write 0x96969696.96969696 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
Read ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
Write 0xbbbbbbbb.bbbbbbbb ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
Read ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
Write 0xdddddddd.dddddddd ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
Read ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
                Info : 512MB at Dimm Slot 1
                Start Addr: 0x00000000.40000000  Size: 512 MBytes
Write 0xa5a5a5a5.a5a5a5a5 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
Read ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
Write 0x96969696.96969696 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
Read ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
Write 0xbbbbbbbb.bbbbbbbb ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
Read ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
Write 0xdddddddd.dddddddd ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
Read ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................

Status of this POST run:        PASS

本文来自ChinaUnix博客，如果查看原文请点：http://blog.chinaunix.net/u/25377/showart_317330.html