AM3358: am3358 sitara processor

/*
** This function will setup the MMU. The function maps three regions -
** 1. DDR
** 2. OCMC RAM
** 3. Device memory
** The function also enables the MMU.
*/
void MMUConfigAndEnable(void)
{
/*
** Define DDR memory region of AM335x. DDR can be configured as Normal MMU_MEMTYPE_NORMAL_SHAREABLE
** memory with R/W access in user/privileged modes. The cache attributes
** specified here are,
** Inner - Write through, No Write Allocate
** Outer - Write Back, Write Allocate MMU_MEMTYPE_NORMAL_NON_SHAREABLE
*/
REGION regionDdr = {
MMU_PGTYPE_SECTION, START_ADDR_DDR, NUM_SECTIONS_DDR,
MMU_MEMTYPE_NORMAL_SHAREABLE(MMU_CACHE_WT_NOWA,
MMU_CACHE_WB_WA),
MMU_REGION_NON_SECURE, MMU_AP_PRV_RW_USR_RW,
(unsigned int*)pageTable
};
/*
** Define OCMC RAM region of AM335x. Same Attributes of DDR region given.
*/
REGION regionOcmc = {
MMU_PGTYPE_SECTION, START_ADDR_OCMC, NUM_SECTIONS_OCMC,
MMU_MEMTYPE_NORMAL_NON_SHAREABLE(MMU_CACHE_WT_NOWA,
MMU_CACHE_WB_WA),
MMU_REGION_NON_SECURE, MMU_AP_PRV_RW_USR_RW,
(unsigned int*)pageTable
};

/*
** Define Device Memory Region. The region between OCMC and DDR is
** configured as device memory, with R/W access in user/privileged modes.
** Also, the region is marked 'Execute Never'.
*/
REGION regionDev = {
MMU_PGTYPE_SECTION, START_ADDR_DEV, NUM_SECTIONS_DEV,
MMU_MEMTYPE_DEVICE_SHAREABLE,
MMU_REGION_NON_SECURE,
MMU_AP_PRV_RW_USR_RW | MMU_SECTION_EXEC_NEVER,
(unsigned int*)pageTable
};

/* Initialize the page table and MMU */
MMUInit((unsigned int*)pageTable);

/* Map the defined regions */
MMUMemRegionMap(&regionDdr);
MMUMemRegionMap(&regionOcmc);
MMUMemRegionMap(&regionDev);

/* Now Safe to enable MMU */
MMUEnable((unsigned int*)pageTable);
}

hi im using am3358 to fpga for nand and ddr im doing these config in mmu if im taking gpmc for fpga and using csn2 base address 0x04000000.

for this i need to allocate some memory to gpmc in mmu ?

if yes how to allocate memory please share some idea its helps me.

thank you

suguresh M