woojar

platform: linux 2.6.x on ppc
apache: 2.2.8
php: 5.2.5

All packages need  to be cross-compiled on x86 platform.
Because of requirements of our project, we need load php third party extension dynamically. But it always failed. How can I work it out? 

Anyway,  I reported the bug to PHP website. You can check the status of the bug here

Additionally, about sqlite3 support on PHP5, it seems that just use pdo_sqlite extension natively since PHP 5.1. Note your PHP script about sqlite3 database calling.

As you all knows, firefox is a popular Internet Browser except IE. But its built-in tab feature is not good enough. Maybe you need some extensions to enhance it. The first one you may install is Tab Mix Plus. With it you can customize your tabbing feature extensively. you can download it from here.

The other good extension is All In One Gesture. This extension allows you to execute common commands using mouse gestures, rocker navigation, scroll wheel navigation and page… You can download it here

Enjoy yourself with Firefox!

Step 1. Generate RSA and CSR
OPTION 1: Generating a RSA private key without a passphrase (ME recommended)
[root@localhost/etc/httpd/conf/ssl.key]# openssl genrsa -out MYdomain.com.key 1024

OPTION 2: Generating a RSA private key with a passphrase. You will be prompted to enter a passphrase right after you hit enter.
[root@localhhost/etc/httpd/conf/ssl.key]# openssl genrsa -des3 -out MYdomain.com.key 1024

You should NOT generate the RSA private key with a passphrase if you have scripts that restart apache automatically. If you have, then apache just sit there and wait for the script to input the passphrase which is a mess!
There is a method that you can disable the passphrase to prompt when you restart apache which I’ll show you later~

[root@localhost] /etc/httpd/conf/ssl.csr]# openssl req -new -key MYdomain.com.key -out MYdomain.com.csr
Step 2. Generate local certificate CRT

[root@localhost] openssl  x509 -req -days 30 -in MYdomain.com.csr -signkey MYdomain.com.key -out  MYdomain.crt

Step 3. Configure httpd.conf

Listen 443
SSLSessionCache         shmcb:/var/cache/mod_ssl/scache(512000)
SSLSessionCacheTimeout  300

<VirtualHost _default_:443>                                                
ErrorLog logs/ssl_error_log                    
TransferLog logs/ssl_access_log
LogLevel warn                                                          
SSLEngine on                                                               
SSLCertificateFile /usr/local/apache2/openssl/MYdomain.com.crt              SSLCertificateKeyFile /usr/local/apache2/openssl/MYdomain.com.key         
</VirtualHost>

原文见这里

uboot源代码的tools/目录下有mkimage工具，这个工具可以用来制作不压缩或者压缩的多种可启动映象文件。

mkimage在制作映象文件的时候，是在原来的可执行映象文件的前面加上一个0×40字节的头，记录参数所指定的信息，这样uboot才能识别这个映象是针对哪个CPU体系结构的，哪个OS的，哪种类型，加载内存中的哪个位置， 入口点在内存的那个位置以及映象名是什么

root@Glym:/tftpboot# ./mkimage
Usage: ./mkimage -l image
-l ==> list image header information
./mkimage -A arch -O os -T type -C comp -a addr -e ep -n name -d data_file[:data_file...] image
-A ==> set architecture to ‘arch’
-O ==> set operating system to ‘os’
-T ==> set image type to ‘type’
-C ==> set compression type ‘comp’
-a ==> set load address to ‘addr’ (hex)
-e ==> set entry point to ‘ep’ (hex)
-n ==> set image name to ‘name’
-d ==> use image data from ‘datafile’
-x ==> set XIP (execute in place)
参数说明：

-A 指定CPU的体系结构：

取值 表示的体系结构
alpha Alpha
arm A RM
x86 Intel x86
ia64 IA64
mips MIPS
mips64 MIPS 64 Bit
ppc PowerPC
s390 IBM S390
sh SuperH
sparc SPARC
sparc64 SPARC 64 Bit
m68k MC68000

-O 指定操作系统类型，可以取以下值：
openbsd、netbsd、freebsd、4_4bsd、linux、svr4、esix、solaris、irix、sco、dell、ncr、lynxos、vxworks、psos、qnx、u-boot、rtems、artos

-T 指定映象类型，可以取以下值：
standalone、kernel、ramdisk、multi、firmware、script、filesystem

-C 指定映象压缩方式，可以取以下值：
none 不压缩
gzip 用gzip的压缩方式
bzip2 用bzip2的压缩方式

-a 指定映象在内存中的加载地址，映象下载到内存中时，要按照用mkimage制作映象时，这个参数所指定的地址值来下载

-e 指定映象运行的入口点地址，这个地址就是-a参数指定的值加上0×40（因为前面有个mkimage添加的0×40个字节的头）

-n 指定映象名

-d 指定制作映象的源文件

U-BOOT下使用bootm引导内核方法

一、在开始之前先说明一下bootm相关的东西。

1、 首先说明一下，S3C2410架构下的bootm只对sdram中的内核镜像文件进行操作(好像AT91架构提供了一段从flash复制内核镜像的代码， 不过针对s3c2410架构就没有这段代码，虽然可以在u-boot下添加这段代码，不过好像这个用处不大)，所以请确保你的内核镜像下载到sdram 中，或者在bootcmd下把flash中的内核镜像复制到sdram中。

2、-a参数后是内核的运行地址，-e参数后是入口地址。
3、
1）如果我们没用mkimage对内核进行处理的话，那直接把内核下载到0×30008000再运行就行，内核会自解压运行（不过内核运行需要一个tag来传递参数，而这个tag建议是由bootloader提供的，在u-boot下默认是由bootm命令建立的）。
2）如果使用mkimage生成内核镜像文件的话，会在内核的前头加上了64byte的信息，供建立tag之用。bootm命令会首先判断bootm xxxx 这个指定的地址xxxx是否与-a指定的加载地址相同。
(1)如果不同的话会从这个地址开始提取出这个64byte的头部，对其进行分析，然后把去掉头部的内核复制到-a指定的load地址中去运行之
(2)如果相同的话那就让其原封不同的放在那，但-e指定的入口地址会推后64byte，以跳过这64byte的头部。
二、好，接着介绍使用mkimage生成镜像文件并下载运行的方法。
方法一、
1、首先，用u-boot/tools/mkimage这个工具为你的内核加上u-boot引导所需要的文件头，具体做法如下：
[root@localhost tftpboot]#mkimage -n ‘linux-2.6.14′ -A arm -O linux -T kernel -C none -a 0×30008000 -e 0×30008000 -d zImage zImage.img
Image Name:   linux-2.6.14
Created:      Fri Jan 12 17:14:50 2007
Image Type:   ARM Linux Kernel Image (uncompressed)
Data Size:    1262504 Bytes = 1232.91 kB = 1.20 MB
Load Address: 0×30008000
Entry Point:  0×30008000

这里解释一下参数的意义：
        -A ==> set architecture to ‘arch’
        -O ==> set operating system to ‘os’
        -T ==> set image type to ‘type’
        -C ==> set compression type ‘comp’
        -a ==> set load address to ‘addr’ (hex)
        -e ==> set entry point to ‘ep’ (hex)
        -n ==> set image name to ‘name’
        -d ==> use image data from ‘datafile’
        -x ==> set XIP (execute in place)

2 、下载内核
U-Boot 1.1.3 (Jan 12 2007 - 16:16:36)

U-Boot code: 33F80000 -> 33F9BAC0  BSS: -> 33F9FBAC
RAM Configuration:
Bank #0: 30000000 64 MB
Nor Flash: 512 kB
Nand Flash:  64 MB
In:    serial
Out:   serial
Err:   serial
Hit any key to stop autoboot:  0
sbc2410=>tftp 0×31000000 zImage.img        
TFTP from server 192.168.1.115; our IP address is 192.168.1.128
Filename ‘zImage.img’.
Load address: 0×31000000
Loading: #################################################################
        #################################################################
        #################################################################
        ####################################################
done
Bytes transferred = 1263324 (1346dc hex)
3.运行

sbc2410=>bootm 0×31000000
## Booting image at 31000000 …
  Image Name:   linun-2.6.14 
  Image Type:   ARM Linux Kernel Image (uncompressed)
  Data Size:    1263260 Bytes =  1.2 MB
  Load Address: 30008000
  Entry Point:  30008000
  Verifying Checksum … OK
OK

Starting kernel …

Uncompressing Linux…………………………………………………….Linux version 2.6.14 (root@luofuchong) (gcc version 3.4.1) #21 Fri Oct 20 17:206CPU: ARM920Tid(wb) [41129200] revision 0 (ARMv4T)
Machine: SMDK2410
Memory policy: ECC disabled, Data cache writeback
CPU S3C2410A (id 0×32410002)
S3C2410: core 202.800 MHz, memory 101.400 MHz, peripheral 50.700 MHz
S3C2410 Clocks, (c) 2004 Simtec Electronics
CLOCK: Slow mode (1.500 MHz), fast, MPLL on, UPLL on
USB Control, (c) 2006 sbc2410
CPU0: D VIVT write-back cache
CPU0: I cache: 16384 bytes, associativity 64, 32 byte lines, 8 sets
CPU0: D cache: 16384 bytes, associativity 64, 32 byte lines, 8 sets
Built 1 zonelists
Kernel command line: console=ttySAC0 root=/dev/nfs nfsroo
t=192.168.1.115:/frien"irq: clearing subpending status 00000002
PID hash table entries: 512 (order: 9, 8192 bytes)
timer tcon=00500000, tcnt a509, tcfg 00000200,00000000, usec 00001e4c
Console: colour dummy device 80×30
Dentry cache hash table entries: 16384 (order: 4, 65536 bytes)
Inode-cache hash table entries: 8192 (order: 3, 32768 bytes)
Memory: 64MB = 64MB total
Memory: 62208KB available (1924K code, 529K data, 108K init)
Mount-cache hash table entries: 512
CPU: Testing write buffer coherency: ok
softlockup thread 0 started up.
NET: Registered protocol family 16
S3C2410: Initialising architecture
SCSI subsystem initialized
usbcore: registered new driver usbfs
usbcore: registered new driver hub
S3C2410 DMA Driver, (c) 2003-2004 Simtec Electronics
DMA channel 0 at c4800000, irq 33
DMA channel 1 at c4800040, irq 34
DMA channel 2 at c4800080, irq 35
DMA channel 3 at c48000c0, irq 36
NetWinder Floating Point Emulator V0.97 (double precision)
devfs: 2004-01-31 Richard Gooch (rgooch@atnf.csiro.au)
devfs: devfs_debug: 0×0
devfs: boot_options: 0×1
yaffs Oct 18 2006 12:39:51 Installing.
Console: switching to colour frame buffer device 30×40
fb0: s3c2410fb frame buffer device
fb1: Virtual frame buffer device, using 1024K of video memory
led driver initialized
s3c2410 buttons successfully loaded
s3c2410_serial0 at MMIO 0×50000000 (irq = 70) is a S3C2410
s3c2410_serial1 at MMIO 0×50004000 (irq = 73) is a S3C2410
s3c2410_serial2 at MMIO 0×50008000 (irq = 76) is a S3C2410
io scheduler noop registered
io scheduler anticipatory registered
io scheduler deadline registered
io scheduler cfq registered
RAMDISK driver initialized: 16 RAM disks of 4096K size 1024 blocksize
usbcore: registered new driver ub
Cirrus Logic CS8900A driver for Linux (Modified for SMDK2410)
eth0: CS8900A rev E at 0xe0000300 irq=53, no eeprom , addr: 08: 0:3E:26:0A:5B
S3C24XX NAND Driver, (c) 2004 Simtec Electronics
s3c2410-nand: mapped registers at c4980000
s3c2410-nand: timing: Tacls 10ns, Twrph0 30ns, Twrph1 10ns
NAND device: Manufacturer ID: 0xec, Chip ID: 0×76 (Samsung NAND 64MiB 3,3V 8-bi)Scanning device for bad blocks
Bad eraseblock 1884 at 0×01d70000
Creating 4 MTD partitions on "NAND 64MiB 3,3V 8-bit":
0×00000000-0×00020000 : "vivi"
0×00020000-0×00030000 : "param"
0×00030000-0×00200000 : "kernel"
0×00200000-0×04000000 : "root"
usbmon: debugfs is not available
s3c2410-ohci s3c2410-ohci: S3C24XX OHCI
s3c2410-ohci s3c2410-ohci: new USB bus registered, assigned bus number 1
s3c2410-ohci s3c2410-ohci: irq 42, io mem 0×49000000
hub 1-0:1.0: USB hub found
hub 1-0:1.0: 2 ports detected
Initializing USB Mass Storage driver…
usbcore: registered new driver usb-storage
USB Mass Storage support registered.
usbcore: registered new driver usbmouse
drivers/usb/input/usbmouse.c: v1.6:USB HID Boot Protocol mouse driver
mice: PS/2 mouse device common for all mice
s3c2410 TouchScreen successfully loaded
UDA1341 audio driver initialized
NET: Registered protocol family 2
IP route cache hash table entries: 1024 (order: 0, 4096 bytes)
TCP established hash table entries: 4096 (order: 2, 16384 bytes)
TCP bind hash table entries: 4096 (order: 2, 16384 bytes)
TCP: Hash tables configured (established 4096 bind 4096)
TCP reno registered
TCP bic registered
NET: Registered protocol family 1
IP-Config: Complete:
     device=eth0, addr=192.168.1.128, mask=255.255.255.0, gw=192.168.1.1,
    host=luofuchong, domain=, nis-domain=(none),
    bootserver=192.168.1.1, rootserver=192.168.1.115, rootpath=
Looking up port of RPC 100003/2 on 192.168.1.115
Looking up port of RPC 100005/1 on 192.168.1.115
VFS: Mounted root (nfs filesystem).
Mounted devfs on /dev
Freeing init memory: 108K
init started:  BusyBox v1.1.3 (2006.09.20-14:52+0000) multi-call binary
Starting pid 696, console /dev/tts/0: ‘/etc/init.d/rcS’

Please press Enter to activate this console.

方法二、
1、首先，用u-boot/tools/mkimage这个工具为你的内核加上u-boot引导所需要的文件头，具体做法如下：
[root@localhost tftpboot]#mkimage -n ‘linux-2.6.14′ -A arm -O linux -T kernel -C none -a 0×30008000 -e 0×30008040 -d zImage zImage.img
Image Name:   linux-2.6.14
Created:      Fri Jan 12 17:14:50 2007
Image Type:   ARM Linux Kernel Image (uncompressed)
Data Size:    1262504 Bytes = 1232.91 kB = 1.20 MB
Load Address: 0×30008000
Entry Point:  0×30008040
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<!–[endif]–>

2 、下载内核
U-Boot 1.1.3 (Jan 12 2007 - 16:16:36)

U-Boot code: 33F80000 -> 33F9BAC0  BSS: -> 33F9FBAC
RAM Configuration:
Bank #0: 30000000 64 MB
Nor Flash: 512 kB
Nand Flash:  64 MB
In:    serial
Out:   serial
Err:   serial
Hit any key to stop autoboot:  0
sbc2410=>tftp 0×30008000 zImage.img        
TFTP from server 192.168.1.115; our IP address is 192.168.1.128
Filename ‘zImage.img’.
Load address: 0×30008000
Loading: #################################################################
        #################################################################
        #################################################################
        ####################################################
done
Bytes transferred = 1263324 (1346dc hex)
3.运行

sbc2410=>bootm 0×30008000
## Booting image at 30008000 …
   Image Name:   linux-2.6.14
   Image Type:   ARM Linux Kernel Image (uncompressed)
   Data Size:    1261056 Bytes =  1.2 MB
   Load Address: 30008000
   Entry Point:  30008040
   Verifying Checksum … OK
   XIP Kernel Image … OK

内核启动信息省。。。。
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<!–[endif]–>

To cross-compile Perl on Linux for PowerPc architecture, you must install SSH server on your PowerPC platform.  To SSH server we have two choices here,

1. OpenSSH:  Download the latest version OpenSSH from http://www.openssh.org . To cross-compile OpenSSH, you need to download zlib and cross-compile it firstly. And then issure option with "–with-zlib=zlibpath" to specify zlib path while configure OpenSSH
2. Dropbear: Download it from http://matt.ucc.asn.au/dropbear/dropbear.html and cross-compile it as INSTALL reference text file, after that copy essential binary file such as "dropbear, scp, drobearkey" to your PowerPC system, then generate SSH key for PowerPC system and start ssh service.

Because the flash is limited ,so we choose Dropbear.  After SSH installation, Download Perl from http://www.perl.org and cross-compile it as the INSTALL text reference file. After you finish the make, your will get binary file for PowerPC– miniperl. Copy the miniperl to your PowerPC platform and rename it to perl which is just  perl interpreter and  basically satisfy your requirement in GUI filed programming for embedded system.