Dear Fabio Estevam,
Hi Marek,
On Wed, May 30, 2012 at 2:43 AM, Marek Vasut marex@denx.de wrote:
This function can be overridden at run-time and allows implementors of new boards based on the i.MX28 chip to fine-tune the memory params. It is possible to write into the dram_vals array because when the SPL runs, it is located SRAM. Therefore the location is writable. There is no possibility of these data to be read-only.
This still does not fix the mx28evk booting issue on u-boot-imx tree.
Have you tried to boot m28evk with the following commit reverted?
It's broken, that's why the following patch was applied ;-)
Call this or similar in your spl_boot.c to adjust the DRAM configuration. Actually I think even the following value should fix your problem:
void mx28_adjust_memory_params(uint32_t *dram_vals) { dram_vals[0x74 >> 2] = 0x0f02010a; }
commit 19a2066b578f826c7bcb2b96a90434382e8ec8f3 Author: Marek Vasut marex@denx.de Date: Thu May 3 05:47:19 2012 +0000
M28: Scan only first 512 MB of DRAM to avoid memory wraparound
Best regards, Marek Vasut