AM335x 修改内存中dtb加载位置

uboot下的配置在include/configs/下的 am335x_evm.h   ti_armv7_common.h  ti_am335x_common.h 中


修改bootz加载dtb文件位置的配置在   ti_armv7_common.h   中
修改后的内容如下：
/*
 * Our DDR memory always starts at 0x80000000 and U-Boot shall have
 * relocated itself to higher in memory by the time this value is used.
 * However, set this to a 32MB offset to allow for easier Linux kernel
 * booting as the default is often used as the kernel load address.
 */
#define CONFIG_SYS_LOAD_ADDR 0x82000000

/*
 * We setup defaults based on constraints from the Linux kernel, which should
 * also be safe elsewhere.  We have the default load at 32MB into DDR (for
 * the kernel), FDT above 128MB (the maximum location for the end of the
 * kernel), and the ramdisk 512KB above that (allowing for hopefully never
 * seen large trees).  We say all of this must be within the first 256MB
 * as that will normally be within the kernel lowmem and thus visible via
 * bootm_size and we only run on platforms with 256MB or more of memory.
 */
#define DEFAULT_LINUX_BOOT_ENV \
"loadaddr=0x82000000\0" \
"kernel_addr_r=0x82000000\0" \
"fdtaddr=0x88000000\0" \
"fdt_addr_r=0x88000000\0" \
"rdaddr=0x88080000\0" \
"ramdisk_addr_r=0x88080000\0" \
"bootm_size=0x10000000\0"


修改后重新编译生成MLO和u-boot.img文件即可使用