On Sunday, December 27, 2015 at 08:33:26 AM, Wills Wang wrote: > On 12/27/2015 02:37 AM, Marek Vasut wrote: > > On Saturday, December 26, 2015 at 07:29:51 PM, Wills Wang wrote: > >> WASP is ar9341. > > > > Please do not top post. > > > > Did you try if the memory is accessible on your platform ? AR9331 I have > > here has the SRAM at 0xbd007000 , just like that machine in [1] . > > I found there is a memory segment at 0xbd000000...0xbd007fff. it's > independent of DDR physical memory, can be read and wrote, but > hardware can't boot up if don't execute lowlevel_init.S when define > CONFIG_SYS_INIT_SP_ADDR=0xbd007000 to set C stack into SRAM.
Stack grows down, so of course if you put stack at the beginning of SRAM, that cannot work ;-) Put it at the end , 0xbd008000. Best regards, Marek Vasut _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
