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/*
* Copyright 2014 GE Intelligent Platforms, Inc.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include <common.h>
#include <asm/cache.h>
#include <mmu.h>
#include <mach/mmu.h>
int arch_remap_range(void *_start, size_t size, unsigned flags)
{
uint32_t ptr, start, tsize, valid, wimge, pte_flags;
unsigned long epn;
phys_addr_t rpn = 0;
int esel = 0;
switch (flags) {
case MAP_UNCACHED:
pte_flags = MAS2_I;
break;
case MAP_CACHED:
pte_flags = 0;
break;
default:
return -EINVAL;
}
ptr = start = (uint32_t)_start;
wimge = pte_flags | MAS2_M;
while (ptr < (start + size)) {
esel = e500_find_tlb_idx((void *)ptr, 1);
if (esel != -1)
break;
e500_read_tlbcam_entry(esel, &valid, &tsize, &epn,
&rpn);
if (flags & MAS2_I) {
flush_dcache();
invalidate_icache();
}
e500_set_tlb(1, epn, rpn, MAS3_SX|MAS3_SW|MAS3_SR,
(u8)wimge, 0, esel, tsize, 1);
/* convert tsize to bytes to increment address. */
ptr += (1ULL << ((tsize) + 10));
}
return 0;
}
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