fsl-soc.c
1.09 KB
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/*
* Freescale SOC support functions
*
* Author: Scott Wood <scottwood@freescale.com>
*
* Copyright (c) 2007 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.
*/
#include "ops.h"
#include "types.h"
#include "fsl-soc.h"
#include "stdio.h"
static u32 prop_buf[MAX_PROP_LEN / 4];
u32 *fsl_get_immr(void)
{
void *soc;
unsigned long ret = 0;
soc = find_node_by_devtype(NULL, "soc");
if (soc) {
int size;
u32 naddr;
size = getprop(soc, "#address-cells", prop_buf, MAX_PROP_LEN);
if (size == 4)
naddr = prop_buf[0];
else
naddr = 2;
if (naddr != 1 && naddr != 2)
goto err;
size = getprop(soc, "ranges", prop_buf, MAX_PROP_LEN);
if (size < 12)
goto err;
if (prop_buf[0] != 0)
goto err;
if (naddr == 2 && prop_buf[1] != 0)
goto err;
if (!dt_xlate_addr(soc, prop_buf + naddr, 8, &ret))
ret = 0;
}
err:
if (!ret)
printf("fsl_get_immr: Failed to find immr base\r\n");
return (u32 *)ret;
}