[ECOS] Porting eCos / Redboot / Memory map modifications / E7T
Wed Sep 28 11:17:00 GMT 2005
On Wed, Sep 28, 2005 at 08:15:10AM +0000, Ali Sina wrote:
> we are trying to get our code to run on our own hardware, which for all
> practical reasons can be described as an E7T platform with double the RAM.
> The setup is as follows:
> Redboot (ROM startup mode) is resident on the board and upon power on loads
> the image of the code (RAM startup) from FLASH into RAM, where the code
> then gets executed.
> As a control and starting point, the same Redboot and the compiled code run
> fine on both E7T and our HW, of course not using the extra RAM.
> >From this list, Massa's book and other sources I understand that what is
> needed in order to use the extra RAM is to modify the memory layout,
> specified in the mlt_arm_e7t_rom/mlt_arm_e7t_ram.h and .ldi files.
> Particularly, I have changed the RAM size to double (from 0x80000 to
> 0x100000) and modified the heap size accordingly.
> Is this sufficient?
IT might be worth reading the data sheet about the memory
controller. Does it need setting up differently when there is double
the amount of RAM.
to be doing something with a memory controller and timings.
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