uboot 和linux内核关键地址解析!(小寿原创)

时间：2010-06-10 来源：xiaoshou330

硬件:at91rm9260

一.内核地址:

arch/arm/Makefile

内核运行虚拟地址       TEXTADDR = 0xC0008000
(虚拟地址,内核地址空间 0xc0000000)
0x8000:用于存放页表文件.
----------------------------------------------
arch/arm/boot/Makefile

内核加载地址          ZRELADDR     = 0x20008000
---------------------------------------------
arch/arm/boot/compressed/Makefile

自解压程序地址         ZTEXTADDR  = 0x00000000

启动参数存储地址(跟uboot中定义的对应)
                     PARAMS_PHYS= 0x20000100
uboot 中定义的
    /* adress of boot parameters */
    gd->bd->bi_boot_params = PHYS_SDRAM + 0x100;

ZTEXTADDR
Start address of decompressor. There's no point in talking about
virtual or physical addresses here, since the MMU will be off at
the time when you call the decompressor code. You normally call
the kernel at this address to start it booting. This doesn't have
to be located in RAM, it can be in flash or other read-only or
read-write addressable medium.

ZBSSADDR
Start address of zero-initialised work area for the decompressor.
This must be pointing at RAM. The decompressor will zero initialise
this for you. Again, the MMU will be off.

ZRELADDR
This is the address where the decompressed kernel will be written,
and eventually executed. The following constraint must be valid:

__virt_to_phys(TEXTADDR) == ZRELADDR

The initial part of the kernel is carefully coded to be position
independent.

INITRD_PHYS
Physical address to place the initial RAM disk. Only relevant if
you are using the bootpImage stuff (which only works on the old
struct param_struct).

INITRD_VIRT
Virtual address of the initial RAM disk. The following constraint
must be valid:

__virt_to_phys(INITRD_VIRT) == INITRD_PHYS

PARAMS_PHYS
Physical address of the struct param_struct or tag list, giving the
kernel various parameters about its execution environment.

二. uboot

TEXT_BASE = 0x23f00000

uboot 高端运行地址

uboot 和linux内核关键 地址解析!(小寿原创)

uboot 和linux内核关键地址解析!(小寿原创)