| Jayachandran C | aceee09 | 2013-06-10 06:41:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 2003-2013 Broadcom Corporation. |
| 3 | * All Rights Reserved. |
| 4 | * |
| 5 | * This software is available to you under a choice of one of two |
| 6 | * licenses. You may choose to be licensed under the terms of the GNU |
| 7 | * General Public License (GPL) Version 2, available from the file |
| 8 | * COPYING in the main directory of this source tree, or the Broadcom |
| 9 | * license below: |
| 10 | * |
| 11 | * Redistribution and use in source and binary forms, with or without |
| 12 | * modification, are permitted provided that the following conditions |
| 13 | * are met: |
| 14 | * |
| 15 | * 1. Redistributions of source code must retain the above copyright |
| 16 | * notice, this list of conditions and the following disclaimer. |
| 17 | * 2. Redistributions in binary form must reproduce the above copyright |
| 18 | * notice, this list of conditions and the following disclaimer in |
| 19 | * the documentation and/or other materials provided with the |
| 20 | * distribution. |
| 21 | * |
| 22 | * THIS SOFTWARE IS PROVIDED BY BROADCOM ``AS IS'' AND ANY EXPRESS OR |
| 23 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
| 24 | * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 25 | * ARE DISCLAIMED. IN NO EVENT SHALL BROADCOM OR CONTRIBUTORS BE LIABLE |
| 26 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| 27 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| 28 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR |
| 29 | * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
| 30 | * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE |
| 31 | * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN |
| 32 | * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 33 | */ |
| 34 | |
| 35 | #include <linux/kernel.h> |
| 36 | #include <linux/bootmem.h> |
| 37 | |
| 38 | #include <linux/of_fdt.h> |
| 39 | #include <linux/of_platform.h> |
| 40 | #include <linux/of_device.h> |
| 41 | |
| 42 | extern u32 __dtb_xlp_evp_begin[], __dtb_xlp_svp_begin[], __dtb_start[]; |
| 43 | |
| 44 | void __init *xlp_dt_init(void *fdtp) |
| 45 | { |
| 46 | if (!fdtp) { |
| 47 | switch (current_cpu_data.processor_id & 0xff00) { |
| 48 | #ifdef CONFIG_DT_XLP_SVP |
| 49 | case PRID_IMP_NETLOGIC_XLP3XX: |
| 50 | fdtp = __dtb_xlp_svp_begin; |
| 51 | break; |
| 52 | #endif |
| 53 | #ifdef CONFIG_DT_XLP_EVP |
| 54 | case PRID_IMP_NETLOGIC_XLP8XX: |
| 55 | fdtp = __dtb_xlp_evp_begin; |
| 56 | break; |
| 57 | #endif |
| 58 | default: |
| 59 | /* Pick a built-in if any, and hope for the best */ |
| 60 | fdtp = __dtb_start; |
| 61 | break; |
| 62 | } |
| 63 | } |
| 64 | initial_boot_params = fdtp; |
| 65 | return fdtp; |
| 66 | } |
| 67 | |
| 68 | void __init device_tree_init(void) |
| 69 | { |
| 70 | unsigned long base, size; |
| 71 | |
| 72 | if (!initial_boot_params) |
| 73 | return; |
| 74 | |
| 75 | base = virt_to_phys((void *)initial_boot_params); |
| 76 | size = be32_to_cpu(initial_boot_params->totalsize); |
| 77 | |
| 78 | /* Before we do anything, lets reserve the dt blob */ |
| 79 | reserve_bootmem(base, size, BOOTMEM_DEFAULT); |
| 80 | |
| 81 | unflatten_device_tree(); |
| 82 | |
| 83 | /* free the space reserved for the dt blob */ |
| 84 | free_bootmem(base, size); |
| 85 | } |
| 86 | |
| 87 | static struct of_device_id __initdata xlp_ids[] = { |
| 88 | { .compatible = "simple-bus", }, |
| 89 | {}, |
| 90 | }; |
| 91 | |
| 92 | int __init xlp8xx_ds_publish_devices(void) |
| 93 | { |
| 94 | if (!of_have_populated_dt()) |
| 95 | return 0; |
| 96 | return of_platform_bus_probe(NULL, xlp_ids, NULL); |
| 97 | } |
| 98 | |
| 99 | device_initcall(xlp8xx_ds_publish_devices); |