在 MDKA5D3X-EK 上通过at91bootstrap加载裸机程序到DDR2

By Mcuzone

在 MDKA5D3X-EK 上运行 裸机程序

ARM Cortex A5
Atmel SAMA5D31 SAMA5D33 SAMA5D34 

at91bootstrap 3.5.x
Nand boot

下面的bin文件能加载的用户裸机程序小于等于64K字节
代码是从0x20000000开始执行

编译的时候link地址要注意，还有中断处理也得自己处理

中断可以将sram remap到0，然后在其中安装中断向量
也可以用户程序从0开始link
进入ddr2在0x2000000开始运行后，使用mmu将ddr2映射到0



samba 连接目标板， send boot file :at91sama5d3xek-nandflashboot-softapp-3.5.4.bin
                                        0x40000 app.bin 


    
 

 at91sama5d3xek-nandflashboot-softapp-3.5.4.zip (9 K)

emac_uip_helloworld

C:\xxx\IAR Systems\Embedded Workbench 6.5\arm\examples\Atmel\sama5d3x-ek\examples_ethernet\emac_uip_helloworld\build\ewarm

 ddram.zip (13 K)

RomBOOT


AT91Bootstrap 3.5.4-00007-g7162da9-dirty (Fri Nov  8 13:05:12 CST 2013)

1-Wire: Loading 1-Wire information ...
1-Wire: ROM Searching ... Done, 0x0 1-Wire chips found

WARNING: 1-Wire: No 1-Wire chip found

1-Wire: Using defalt value SYS_GPBR2: 0x481242a, SYS_GPBR3: 0x6a0823

NAND: ONFI flash detected
NAND: Manufacturer ID: 0x2c Chip ID: 0x32
NAND: Disable On-Die ECC
NAND: Initialize PMECC params, cap: 0x4, sector: 0x200
NAND: Image: Copy 0x80000 bytes from 0x40000 to 0x20000000
NAND: Done to load image
-I- MMU enabled.
-I- I cache is already enabled.
-I- D cache enabled.
-- EMAC uIP Hello World Example 1.3.1 --
-- SAMA5D3X-EK
-- Compiled: Nov  8 2013 11:40:45 --
- MAC 3a:1f:34:8:54:54
- Host IP  192.168.1.174
- Router IP  192.168.1.1
- Net Mask  255.255.254.0
** Valid PHY Found: 1
AutoNegotiate complete
P: Link detected 

P: hello-world application init

 sama5d3xek-nandflashboot-softpack-3.6.0.bin.zip (9 K) 

升级支持三星2g08 4g08    

能加载的用户裸机程序小于等于4M字节

相关文件下载：

链接: http://pan.baidu.com/s/1kTr2JB5 密码: 1viq