| 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 | |
|---|
| 17 | u32 *fsl_get_immr(void) |
|---|
| 18 | { |
|---|
| 19 | void *soc; |
|---|
| 20 | unsigned long ret = 0; |
|---|
| 21 | |
|---|
| 22 | soc = find_node_by_devtype(prev: NULL, type: "soc" ); |
|---|
| 23 | if (soc) { |
|---|
| 24 | int size; |
|---|
| 25 | u32 naddr; |
|---|
| 26 | |
|---|
| 27 | size = getprop(devp: soc, name: "#address-cells" , buf: 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(devp: soc, name: "ranges" , buf: 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(node: soc, buf: prop_buf + naddr, buflen: 8, xlated_addr: &ret)) |
|---|
| 46 | ret = 0; |
|---|
| 47 | } |
|---|
| 48 | |
|---|
| 49 | err: |
|---|
| 50 | if (!ret) |
|---|
| 51 | printf(fmt: "fsl_get_immr: Failed to find immr base\r\n" ); |
|---|
| 52 | |
|---|
| 53 | return (u32 *)ret; |
|---|
| 54 | } |
|---|
| 55 | |
|---|
