[ECOS] RedBoot and Cirrus EP9315

Marcin Glogowski marcin.glogowski@interia.pl
Thu Nov 18 13:22:00 GMT 2004


Hallo,
There is many days I'm searching for a solution without result :-(
I have Cirrus Videon EP9315 motherboard.
My problem is I have 128 MB of RAM in two chip select lines (nSDCE0,
nSDCE3).
Every memory bank has 2x32MB of ram.
RedBoot can see only 64 MB, so I need somehow enable the nSDCE0 memory bank.
On the 503 page of EP9315 User Guide is a table where is written how to
enable the chip select line.
I tried to modify the ep93xx_misc.c file to:
#ifdef
CYGHWR_HAL_ARM_EDB93XX_DRAM_SIZE_64


    X_ARM_MMU_SECTION(0x000,  0x000,   32,  ARM_CACHEABLE,
ARM_BUFFERABLE,
ARM_ACCESS_PERM_RW_RW);
    X_ARM_MMU_SECTION(0x040,  0x020,   32,  ARM_CACHEABLE,
ARM_BUFFERABLE,
ARM_ACCESS_PERM_RW_RW);
    X_ARM_MMU_SECTION(0xC00,  0x040,   32,  ARM_CACHEABLE,
ARM_BUFFERABLE,
ARM_ACCESS_PERM_RW_RW);
    X_ARM_MMU_SECTION(0xC40,  0x060,   32,  ARM_CACHEABLE,
ARM_BUFFERABLE,
ARM_ACCESS_PERM_RW_RW);
#endif //CYGHWR_HAL_ARM_EDB93XX_DRAM_SIZE_64
without result :-(
If there is anybody that know how to modify the RedBoot software to I
would be very grateful.
Bye.



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