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Armzone QT2410
The armzone.com qt2410 is a 90% compatible chinese remake of Samsungs SMDK2410. Unfortunately it's only 90% compatible, not 100% - and those 10% difference are only marginally documented.
QT2410包含主板(Mainboard)和核心板(Kernel board). 核心板通过一个144脚的SDRAM插座插入主板.
QT2410有一个位于主板的512k字节的NOR flash(SST39VF400A)和一个位于核心板的64MB NAND flash (Samsung K9F1208U0B).核心板有一个小开关来决定是从NAND flash启动还是从NOR flash 启动.
NOR flash预置了"S3C2410X USB Downloader ver 0.2"的小程序,这个程序监听usb设备端口等待下载程序。下载完程序后,跳到刚刚下载的代码处运行。
原装的QT2410附带一些bogus的windows程序来向板子下程序. User:HaraldWelte已经写了叫做s3c2410_boot_usb的程序在Linux主机上同USB downloader交互。
NAND和NOR flash可以通过JTAG烧写。这是万不得已的方法,因为它极其耗时间。Samsung / Armzone附带了windows下的烧写工具,叫做sjf2410, User:HaraldWelte移植了一个linux版的,叫做sjf2410-linux。使用它,你可以重新烧写Bootloader到NAND,万一什么奇怪的事情发生的话
The 64MB NAND Flash is partitioned as follows:
0x00000000: u-boot, 196kByte (can shrink later, lots of debug code) 0x00030000: u-boot environment, 16kByte (cannot shrink, 16k erase size of NAND) 0x00034000: kernel, 2MB (0x200000 bytes) 0x00234000: initrd, 4MB (0x400000 bytes) 0x00634000: jffs2, 59,184kB (0x39cc000 bytes) 0x03ffffff: end
0x00000000: S3C2410 Steppingstone 0x19000300: CS8900A Ethernet 0x30000000: SDRAM start 0x30000100: Arm-Tag "ATAG" structure passing from bootloader to kernel 0x30008000: Default load address for decompressed kernel 0x32000000: Default load address for compressed kernel u-boot image 0x33d00000: Default frame buffer start address 0x33d4b000: Default frame buffer end address (240x320, 16bpp) 0x33f5f000: MALLOC_BASE of u-boot 0x33f80000: TEXT_BASE of u-boot 0x33ffffff: End of RAM
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