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/* Copyright (c) 2009-2012, Code Aurora Forum. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of Code Aurora nor
* the names of its contributors may be used to endorse or promote
* products derived from this software without specific prior written
* permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NON-INFRINGEMENT ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
#if DEVICE_TREE /* If using device tree */
#include <reg.h>
#include <debug.h>
#include <malloc.h>
#include <smem.h>
#include <stdint.h>
#include <libfdt.h>
#include <platform/iomap.h>
#define SIZE_1M (1024 * 1024)
typedef struct {
uint32_t size;
uint32_t start_addr;
}mem_info;
mem_info copper_default_fixed_memory[] = {
{ .size = (132 * SIZE_1M),
.start_addr = SDRAM_START_ADDR
},
{ .size = SIZE_1M,
.start_addr = SDRAM_START_ADDR +
(250 * SIZE_1M) +
(5 * SIZE_1M)
},
{ .size = (240 * SIZE_1M),
.start_addr = SDRAM_START_ADDR +
(16 * SIZE_1M) +
(256 * SIZE_1M)
},
};
uint32_t *target_mem_dev_tree_create(uint32_t *ptr, uint32_t size, uint32_t addr)
{
*ptr++ = cpu_to_fdt32(addr);
*ptr++ = cpu_to_fdt32(size);
return ptr;
}
uint32_t *target_dev_tree_create(uint32_t *ptr,
mem_info usable_mem_map[],
uint32_t num_regions)
{
uint32_t i;
ASSERT(num_regions);
dprintf(SPEW, "Number of HLOS regions in 1st bank = %u\n", num_regions);
for (i = 0; i < num_regions; i++)
{
ptr = target_mem_dev_tree_create(ptr,
usable_mem_map[i].size,
usable_mem_map[i].start_addr);
}
return ptr;
}
uint32_t* target_dev_tree_mem(uint32_t *num_of_entries)
{
struct smem_ram_ptable ram_ptable;
uint32_t *meminfo_ptr;
uint32_t num_of_sections = 0;
uint32_t *ptr;
uint32_t last_fixed_add;
int n;
int i;
int index = 0;
int count = 0;
int overflow = 0;
/* Make sure RAM partition table is initialized */
ASSERT(smem_ram_ptable_init(&ram_ptable));
n = ARRAY_SIZE(copper_default_fixed_memory);
last_fixed_add = copper_default_fixed_memory[n-1].start_addr +
copper_default_fixed_memory[n-1].size;
/* Find the number of parts in ram_ptable of category SDRAM and type SYS_MEMORY */
for(i = 0; i < ram_ptable.len; i++)
{ if((ram_ptable.parts[i].category ==SDRAM) &&
(ram_ptable.parts[i].type == SYS_MEMORY))
count++;
}
/* Calculating the size of the mem_info_ptr */
for (i = 0 ; i < ram_ptable.len; i++)
{
if((ram_ptable.parts[i].category ==SDRAM) &&
(ram_ptable.parts[i].type == SYS_MEMORY))
{
if((ram_ptable.parts[i].start <= last_fixed_add) &&
((ram_ptable.parts[i].start + ram_ptable.parts[i].size) >= last_fixed_add))
{
if((ram_ptable.parts[i].start + ram_ptable.parts[i].size) == last_fixed_add)
{
num_of_sections = n + (count - i - 1);
}
else
{
num_of_sections = n + (count - i );
overflow = 1;
}
index = i+1;
break;
}
}
}
*num_of_entries = num_of_sections;
meminfo_ptr = (uint32_t*) malloc(sizeof(uint32_t) * num_of_sections * 2);
ptr = meminfo_ptr;
/* Assumption that the fixed memory region always starts from the first ram_ptable part */
ASSERT((ram_ptable.parts[0].category ==SDRAM) &&
(ram_ptable.parts[0].type == SYS_MEMORY) &&
(ram_ptable.parts[0].start == SDRAM_START_ADDR));
/* Pass along all fixed memory regions to Linux */
meminfo_ptr = target_dev_tree_create(meminfo_ptr, copper_default_fixed_memory,
ARRAY_SIZE(copper_default_fixed_memory));
if(overflow)
{
/* Pass the memory beyond the fixed memory present in the partition */
meminfo_ptr = target_mem_dev_tree_create(meminfo_ptr,
ram_ptable.parts[i].size - last_fixed_add,
ram_ptable.parts[i].start + last_fixed_add);
}
for( i = index ; i < ram_ptable.len ; i ++)
{
if((ram_ptable.parts[i].category ==SDRAM) &&
(ram_ptable.parts[i].type == SYS_MEMORY))
{
/* Pass along all other usable memory regions to Linux */
meminfo_ptr = target_mem_dev_tree_create(meminfo_ptr,
ram_ptable.parts[i].size,
ram_ptable.parts[i].start);
}
}
return ptr;
}
void *target_get_scratch_address(void)
{
return ((void *)SCRATCH_ADDR);
}
unsigned target_get_max_flash_size(void)
{
return (512 * 1024 * 1024);
}
#endif /* DEVICE_TREE */