看了一下gbios的代码~ 觉得挺有意思~

Question

像samsung的24x0~

上来设置sp,然后就跳转c语言执行了~

以前一直没想过~  还有这么便捷的方法~

可能看uboot和linux多了~ 被满眼的宏语句麻痹了~

这么清爽的编码太喜欢了~ 哈哈~ = 3=

Answer 1

”上来设置sp,然后就跳转c语言执行了~“，必须的哈。

Answer 2

呵呵，为了便于对比学习，ATMEL系列的和硬件相关的是用存汇编写的，对学习ARM汇编也很有帮助。

Answer 3

也希望更多的人能够参与到g-bios 的开发中，以下红色部分是g-bios开发的TODO LIST

g-bios 1.0 Task List:
Module	Tasks	Status
Tophalf	Init Sequence: SoC, UART, Mem Controller, NAND	Done
	Kermit Protocol (re-write in C language)	Done
	Nand Core layer implementation	Done
	Boot Menu	Done
	S3C2410 support	Done
	S3C2440 support	Done
	AT91SAM9261 support	Done
	AT91SAM9263 support	Done
	Timeout and default booting	Done
	Large page support	Done
Flash	Flash subsystem design and API spec	Done
	NOR Flash support	Suspending
	NAND core layer implementation	Done
	AT91SAM9261 flash driver	Done
	AT91SAM9263 flash driver (with HW ECC support)	Ongoing
	S3C2410 NAND driver	Done
	S3C2440 NAND driver (with HW ECC support)	Ongoing
	Image file type auto-detection & auto-burning	Ongoing
Network	TCP(UDP)/IP stack	Done
	TCP protocol implementation	Suspending
	DM9000 driver (for AT91SAM9261)	Done
	DM9000 driver: porting to MW2440 board	Done
	AT91SAM9263 Ethernet driver	Done
	ICMP and ping server	Done
	POSIX Socket API compatibility	Suspending
	MII substract layer implementation	Suspending
stdlib	Standard string lib	Done
	Extension to standard string lib	Done
	heap (malloc)	Done
	stdio (printf)	Done
Shell	Command line parsing	Done
	Progress bar	Done
	Ctrl-c support	Done
Graphics	S3C24x0 LCDC driver	Done
	AT91SAM926x LCDC driver	Done
	Bootup Logo	Done
	Font rendering	Suspending
	BMP rendering	Suspending
	JPEG decode	Suspending
Interrupt	Interrupt subsystem core layer	Done
	S3C24x0 interrupt support	Done
	AT91SAM926x interrupt support	Done
	Interrupt bottom-half	Suspending
	Tick timer	Ongoing
	Delay	Ongoing
configure utility	Basic configuration window	Done
	Category and tab control	Suspending

Answer 4

2440板子现在不在手头~ 看看代码~ 顺一下模块先~

= 3= 等春节回家拿了板子就参与一份~

Answer 5

看了一下TODO LIST~

为什么gbios的中断要做成上下半层?~ gbios并没有多进程,所以程序应该可以独享中断~ 没有嵌套中断的需要

想了一下~ 是为了提供一个管理中断的统一接口么?~

PS:1 看了一下中断处理~ 下半层不是做好了么~
     2 TODO LIST里面的hottom是不是bottom?~

[ 本帖最后由 superfight 于 2009-10-25 20:06 编辑 ]

Answer 6

Interrupt hottom-half

Suspending