addr_map.c
1.96 KB
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/*
* Copyright 2008 Freescale Semiconductor, Inc.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* Version 2 as published by the Free Software Foundation.
*
* 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.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*/
#include <common.h>
#include <addr_map.h>
static struct {
phys_addr_t paddr;
phys_size_t size;
unsigned long vaddr;
} address_map[CONFIG_SYS_NUM_ADDR_MAP];
phys_addr_t addrmap_virt_to_phys(void * vaddr)
{
int i;
for (i = 0; i < CONFIG_SYS_NUM_ADDR_MAP; i++) {
u64 base, upper, addr;
if (address_map[i].size == 0)
continue;
addr = (u64)((u32)vaddr);
base = (u64)(address_map[i].vaddr);
upper = (u64)(address_map[i].size) + base - 1;
if (addr >= base && addr <= upper) {
return addr - address_map[i].vaddr + address_map[i].paddr;
}
}
return (phys_addr_t)(~0);
}
void *addrmap_phys_to_virt(phys_addr_t paddr)
{
int i;
for (i = 0; i < CONFIG_SYS_NUM_ADDR_MAP; i++) {
phys_addr_t base, upper;
if (address_map[i].size == 0)
continue;
base = address_map[i].paddr;
upper = address_map[i].size + base - 1;
if (paddr >= base && paddr <= upper) {
phys_addr_t offset;
offset = address_map[i].paddr - address_map[i].vaddr;
return (void *)(unsigned long)(paddr - offset);
}
}
return (void *)(~0);
}
void addrmap_set_entry(unsigned long vaddr, phys_addr_t paddr,
phys_size_t size, int idx)
{
if (idx > CONFIG_SYS_NUM_ADDR_MAP)
return;
address_map[idx].vaddr = vaddr;
address_map[idx].paddr = paddr;
address_map[idx].size = size;
}