On Tue, Oct 26, 2010 at 4:14 PM, Stefano Babic sbabic@denx.de wrote:
On 10/26/2010 10:05 AM, Shawn Guo wrote:
Hi Stefano,
On Tue, Oct 26, 2010 at 3:59 PM, Stefano Babic sbabic@denx.de wrote:
On 10/25/2010 05:14 PM, Shawn Guo wrote:
+#define CONFIG_SYS_SDRAM_BASE PHYS_SDRAM_1 +#define CONFIG_SYS_INIT_SP_ADDR (IRAM_BASE_ADDR + 0x1000)
What is the meaning of the offset at 0x1000 ? Is there something at IRAM_BASE_ADDR ?
I thought CONFIG_SYS_INIT_SP_ADDR is assigned to stack pointer (sp) which decrease the address. Is it not the case?
Yes, my doubt is due to the fact that we do not set the SP at the end of the IRAM and we set it to an arbitrary address in between.
At this point, IRAM is totally free for u-boot to use, so I simply reserved 4 KB from start.