Embedded.Linux.Primer
时间：2007-02-14 来源：ffjnfj
NOR flash: have a parallel data and address bus that are connected directly[7]
to the microprocessor data/address bus. NOR Flash can be directly accessed by
the microprocessor, and code can even be executed directly out of NOR Flash
CPU可以直接access，所以可以在其上直接执行指令。每一个block较大
NAND flash: NAND devices present an operational model more similar to that of a traditional hard drive and associated controller. NAND Flash is more suitable for bulk storage in file system format than raw binary executable code and data storage.
更像硬盘，block较小，读的性能更好，但是写的更差，适合用于fs
make help
内核经常使用ELF文件的section来定位一组对象，比如extable，initdata等，
因为linker，可以知道他们的start/end，从而可以使用他们
Bootloader首先要做的一件事就是初始化DRAM Controller，不然就不是使用DRAM
to the microprocessor data/address bus. NOR Flash can be directly accessed by
the microprocessor, and code can even be executed directly out of NOR Flash
CPU可以直接access，所以可以在其上直接执行指令。每一个block较大
NAND flash: NAND devices present an operational model more similar to that of a traditional hard drive and associated controller. NAND Flash is more suitable for bulk storage in file system format than raw binary executable code and data storage.
更像硬盘，block较小，读的性能更好，但是写的更差，适合用于fs
make help
内核经常使用ELF文件的section来定位一组对象，比如extable，initdata等，
因为linker，可以知道他们的start/end，从而可以使用他们
Bootloader首先要做的一件事就是初始化DRAM Controller，不然就不是使用DRAM
相关阅读 更多 +
