110 lines
3.5 KiB
C
110 lines
3.5 KiB
C
/* Copyright (c) 2012-2013, The Linux Foundation. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met:
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials provided
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* with the distribution.
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* * Neither the name of The Linux Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
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* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
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* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
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* IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <reg.h>
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#include <debug.h>
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#include <malloc.h>
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#include <smem.h>
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#include <stdint.h>
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#include <libfdt.h>
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#include <platform.h>
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#include <platform/iomap.h>
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#include <dev_tree.h>
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#define SIZE_1M (1024 * 1024)
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static struct smem_ram_ptable ram_ptable;
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struct smem_ram_ptable* target_smem_ram_ptable_init()
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{
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/* Make sure RAM partition table is initialized */
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ASSERT(smem_ram_ptable_init(&ram_ptable));
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return &ram_ptable;
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}
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/* Funtion to add the ram partition entries into device tree.
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* The function assumes that all the entire fixed memory regions should
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* be listed in the first bank of the passed in ddr regions.
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*/
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uint32_t target_dev_tree_mem(void *fdt, uint32_t memory_node_offset)
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{
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unsigned int i;
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int ret;
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for (i = 0; i < ram_ptable.len; i++)
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{
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if ((ram_ptable.parts[i].category == SDRAM) &&
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(ram_ptable.parts[i].type == SYS_MEMORY))
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{
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if (ram_ptable.parts[i].start == 0)
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{
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/* Pass along all other usable memory regions to Linux */
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/* Any memory not accessible by the kernel which is below the
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* kernel start address must *not* be given to the kernel.
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*/
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ret = dev_tree_add_mem_info(fdt,
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memory_node_offset,
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ram_ptable.parts[i].start + 3*SIZE_1M,
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ram_ptable.parts[i].size - 3*SIZE_1M);
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}
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else
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{
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/* Pass along all other usable memory regions to Linux */
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ret = dev_tree_add_mem_info(fdt,
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memory_node_offset,
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ram_ptable.parts[i].start,
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ram_ptable.parts[i].size);
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}
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if (ret)
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{
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dprintf(CRITICAL, "Failed to add memory bank addresses to device tree\n");
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goto target_dev_tree_mem_err;
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}
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}
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}
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target_dev_tree_mem_err:
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return ret;
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}
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void *target_get_scratch_address(void)
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{
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return ((void *) VA((addr_t)SCRATCH_REGION1));
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}
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unsigned target_get_max_flash_size(void)
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{
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return (SCRATCH_REGION1_SIZE + SCRATCH_REGION2_SIZE);
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}
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