1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * Freescale SOC support functions
4 *
5 * Author: Scott Wood <scottwood@freescale.com>
6 *
7 * Copyright (c) 2007 Freescale Semiconductor, Inc.
8 */
9
10 #include "ops.h"
11 #include "types.h"
12 #include "fsl-soc.h"
13 #include "stdio.h"
14
15 static u32 prop_buf[MAX_PROP_LEN / 4];
16
fsl_get_immr(void)17 u32 *fsl_get_immr(void)
18 {
19 void *soc;
20 unsigned long ret = 0;
21
22 soc = find_node_by_devtype(NULL, "soc");
23 if (soc) {
24 int size;
25 u32 naddr;
26
27 size = getprop(soc, "#address-cells", prop_buf, MAX_PROP_LEN);
28 if (size == 4)
29 naddr = prop_buf[0];
30 else
31 naddr = 2;
32
33 if (naddr != 1 && naddr != 2)
34 goto err;
35
36 size = getprop(soc, "ranges", prop_buf, MAX_PROP_LEN);
37
38 if (size < 12)
39 goto err;
40 if (prop_buf[0] != 0)
41 goto err;
42 if (naddr == 2 && prop_buf[1] != 0)
43 goto err;
44
45 if (!dt_xlate_addr(soc, prop_buf + naddr, 8, &ret))
46 ret = 0;
47 }
48
49 err:
50 if (!ret)
51 printf("fsl_get_immr: Failed to find immr base\r\n");
52
53 return (u32 *)ret;
54 }
55