On 10/8/2012 6:06 AM, Stefano Babic wrote:
On 04/10/2012 03:47, Troy Kisky wrote:
Read memory setup registers to determine size of available ram. This routine works for mx53/mx6x
I need this because when mx6solo called get_ram_size with a too large maximum size, the system hanged.
Signed-off-by: Troy Kisky troy.kisky@boundarydevices.com
Hi Troy,
I am interested to better understand why get_ram_size() does not work. It seems to me you discovered a bug in this function, and you circumvent it decoding the DRAM controller setup to get the RAM size.
Because the max size is added to the start address in get_ram_size(), I have the feeling that this overwlow the long value, and maybe can be fixed swithcing to a "long long". With which parameters to get_ram_size() does your board hang ?
#define MMDC0_ARB_BASE_ADDR 0x10000000 #define PHYS_SDRAM MMDC0_ARB_BASE_ADDR #define PHYS_SDRAM_SIZE (1u * 1024 * 1024 * 1024)
get_ram_size((void *)PHYS_SDRAM, PHYS_SDRAM_SIZE);
So, base + size = 0x50000000