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/*
* Copyright (C) 2014-2018 MIPS Tech, LLC
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. 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.
* 3. Neither the name of the copyright holder 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 AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER 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.
*/
#include <_ansi.h>
#include <sys/types.h>
#include <sys/stat.h>
#if _MIPS_SIM == _ABI64
# define K0BASE 0xFFFFFFFF80000000LL
#else
# define K0BASE 0x80000000
#endif
void
_get_ram_range (void **ram_base, void **ram_extent)
{
struct s_mem
{
unsigned int size;
unsigned int icsize;
unsigned int dcsize;
} mem;
void get_mem_info (struct s_mem*);
/* The sizeof (s_mem.size) must be 4 bytes. The compiler should be
able to eliminate this check */
if (sizeof (unsigned int) != 4)
{
*ram_extent = 0;
return;
}
get_mem_info (&mem);
/* NOTE: The value returned from the get_mem_info call is the amount
of memory, and not the address of the (last byte + 1) */
if (ram_base)
*ram_base = (void*)K0BASE;
*ram_extent = (void*)(uintptr_t)(K0BASE + mem.size);
}
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