https://blog.youkuaiyun.com/atomicfoxzh-cnhttps://blog.youkuaiyun.com/https://blog.youkuaiyun.com/atomicfox/article/details/8351970https://blog.youkuaiyun.com/atomicfox/article/details/8351970atomicfoxThu, 20 Dec 2012 23:02:32 +0800https://blog.youkuaiyun.com/atomicfox/article/details/8253132https://blog.youkuaiyun.com/atomicfox/article/details/8253132atomicfoxMon, 03 Dec 2012 20:05:35 +0800https://blog.youkuaiyun.com/atomicfox/article/details/7920668https://blog.youkuaiyun.com/atomicfox/article/details/7920668atomicfoxWed, 29 Aug 2012 16:00:58 +0800https://blog.youkuaiyun.com/atomicfox/article/details/7737591https://blog.youkuaiyun.com/atomicfox/article/details/7737591atomicfoxWed, 11 Jul 2012 17:59:34 +0800https://blog.youkuaiyun.com/atomicfox/article/details/7716110https://blog.youkuaiyun.com/atomicfox/article/details/7716110atomicfoxWed, 04 Jul 2012 18:36:26 +0800https://blog.youkuaiyun.com/atomicfox/article/details/7538679https://blog.youkuaiyun.com/atomicfox/article/details/7538679atomicfoxSun, 06 May 2012 00:51:18 +0800linux (hd1,msdos2)/boot/vmlinuz-3.2.0-23-generic root=/dev/s]]>https://blog.youkuaiyun.com/atomicfox/article/details/7532539https://blog.youkuaiyun.com/atomicfox/article/details/7532539atomicfoxThu, 03 May 2012 18:43:23 +0800https://blog.youkuaiyun.com/atomicfox/article/details/7525398https://blog.youkuaiyun.com/atomicfox/article/details/7525398atomicfoxTue, 01 May 2012 10:51:49 +0800https://blog.youkuaiyun.com/atomicfox/article/details/6756687https://blog.youkuaiyun.com/atomicfox/article/details/6756687atomicfoxWed, 07 Sep 2011 14:28:56 +0800https://blog.youkuaiyun.com/atomicfox/article/details/6725728https://blog.youkuaiyun.com/atomicfox/article/details/6725728atomicfoxSun, 28 Aug 2011 00:46:31 +0800https://blog.youkuaiyun.com/atomicfox/article/details/6664067https://blog.youkuaiyun.com/atomicfox/article/details/6664067atomicfoxFri, 05 Aug 2011 19:18:09 +0800https://blog.youkuaiyun.com/atomicfox/article/details/6662860https://blog.youkuaiyun.com/atomicfox/article/details/6662860atomicfoxFri, 05 Aug 2011 13:34:05 +0800https://blog.youkuaiyun.com/atomicfox/article/details/6633181https://blog.youkuaiyun.com/atomicfox/article/details/6633181atomicfoxMon, 25 Jul 2011 22:01:06 +0800https://blog.youkuaiyun.com/atomicfox/article/details/6633171https://blog.youkuaiyun.com/atomicfox/article/details/6633171atomicfoxMon, 25 Jul 2011 21:56:54 +0800https://blog.youkuaiyun.com/atomicfox/article/details/6247452https://blog.youkuaiyun.com/atomicfox/article/details/6247452atomicfoxMon, 14 Mar 2011 09:45:00 +0800
warning: target CPU does not support interworking
 
解决：
 
      一看就知道是跟CPU有关，到u-boot根目录下执行
 
#vi "cpu/arm920t/config.mk"
 
把 PLATFORM_CPPFLAGS += -march=armv4 改成 PLATFORM_CPPFLAGS += -march=armv4t]]>https://blog.youkuaiyun.com/atomicfox/article/details/6235255https://blog.youkuaiyun.com/atomicfox/article/details/6235255atomicfoxWed, 09 Mar 2011 21:34:00 +0800https://blog.youkuaiyun.com/atomicfox/article/details/6232730https://blog.youkuaiyun.com/atomicfox/article/details/6232730atomicfoxTue, 08 Mar 2011 22:11:00 +0800（s3c2440,  fl2440)
在sdram调试U-BOOT是要跳过初始化代码，为什么sdram调试的时候不能再初始化一遍呢？
个人认为，初始化代码是一部分是初始化sdram映射，显然初始化sdram的代码不能在sdram中运行，只能在4k stone里运行。]]>https://blog.youkuaiyun.com/atomicfox/article/details/6214223https://blog.youkuaiyun.com/atomicfox/article/details/6214223atomicfoxMon, 28 Feb 2011 22:06:00 +0800
APCS，ARM 过程调用标准(ARM Procedure Call Standard)，提供了紧凑的编写例程的一种机制，定义的例程可以与其他例程交织在一起。最显著的一点是对这些例程来自哪里没有明确的限制。它们可以编译自 C、 Pascal、也可以是用汇编语言写成的。
 
APCS 对我们通常称为 R0 到 R14 的寄存器起了不同的名字。使用汇编器预处理器的功能，你可以定义 R0 等名字，但在你修改其他人写的代码的时候，最好还是学习使用 APCS 名字。 https://blog.youkuaiyun.com/atomicfox/article/details/6051411https://blog.youkuaiyun.com/atomicfox/article/details/6051411atomicfoxThu, 02 Dec 2010 22:20:00 +0800
所用的LCD为TopPoly-TD035STED4(TFT)型号，240*320的

其VCLK为6.39MHz。 根据s3c2440手册s3c2440处理LCD的时钟源是HCLK，通过寄存器LCDCON1中的CLKVAL可以调整VCLK频率大小，它的公式为：VCLK＝HCLK÷[(CLKVAL＋1)×2]，程序的内部分频为FCLK=400MHz、HCLK=100MHz、PCLK=50MHz(MPLLCON=(92<<12)|(1<<4)|1;)，因此得到CLKV]]>https://blog.youkuaiyun.com/atomicfox/article/details/6051333https://blog.youkuaiyun.com/atomicfox/article/details/6051333atomicfoxThu, 02 Dec 2010 21:46:00 +0800
感谢原作者
1、打开LCD背光
将LCD背光对应的GPIO设置为禁止上拉(GPxUP相应位写入1)，选择output类型(GPxCON相应位写入01)，输出为高电平(GPxDAT相应位写入1)。

2、打开LCD电源
可以将GPG4选择为LCD_PWREN(GPGCON:9-8写入11)，这时候LCD电源的打开/关闭可以通过LCDCON5:3来控制。
也可以自定义其他GPIO用作LCD电源开关，只需将此GPIO设置为禁止上拉]]>