mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-09-04 09:59:32 +00:00
58 lines
1.1 KiB
C
58 lines
1.1 KiB
C
![]() |
/*
|
||
|
* 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;
|
||
|
}
|