Patrick Rudolph | a892cde | 2018-04-19 14:39:07 +0200 | [diff] [blame] | 1 | /* |
| 2 | * This file is part of the coreboot project. |
| 3 | * |
| 4 | * Copyright (C) 2003-2004 Eric Biederman |
| 5 | * Copyright (C) 2005-2010 coresystems GmbH |
| 6 | * Copyright (C) 2014 Google Inc. |
| 7 | * |
| 8 | * This program is free software; you can redistribute it and/or modify |
| 9 | * it under the terms of the GNU General Public License as published by |
| 10 | * the Free Software Foundation; version 2 of the License. |
| 11 | * |
| 12 | * This program is distributed in the hope that it will be useful, |
| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | * GNU General Public License for more details. |
| 16 | */ |
| 17 | |
| 18 | #include <console/console.h> |
| 19 | #include <bootmem.h> |
| 20 | #include <cbmem.h> |
| 21 | #include <device/resource.h> |
| 22 | #include <stdlib.h> |
| 23 | #include <commonlib/region.h> |
| 24 | #include <fit.h> |
| 25 | #include <program_loading.h> |
| 26 | #include <timestamp.h> |
| 27 | #include <cbfs.h> |
| 28 | #include <string.h> |
| 29 | #include <commonlib/compression.h> |
| 30 | #include <lib.h> |
| 31 | #include <fit_payload.h> |
| 32 | |
| 33 | /* Pack the device_tree and place it at given position. */ |
| 34 | static void pack_fdt(struct region *fdt, struct device_tree *dt) |
| 35 | { |
| 36 | printk(BIOS_INFO, "FIT: Flattening FDT to %p\n", |
| 37 | (void *)fdt->offset); |
| 38 | |
| 39 | dt_flatten(dt, (void *)fdt->offset); |
| 40 | prog_segment_loaded(fdt->offset, fdt->size, 0); |
| 41 | } |
| 42 | |
| 43 | /** |
| 44 | * Extract a node to given regions. |
| 45 | * Returns true on error, false on success. |
| 46 | */ |
| 47 | static bool extract(struct region *region, struct fit_image_node *node) |
| 48 | { |
| 49 | void *dst = (void *)region->offset; |
| 50 | const char *comp_name; |
| 51 | size_t true_size = 0; |
| 52 | |
| 53 | switch (node->compression) { |
| 54 | case CBFS_COMPRESS_NONE: |
| 55 | comp_name = "Relocating uncompressed"; |
| 56 | break; |
| 57 | case CBFS_COMPRESS_LZMA: |
| 58 | comp_name = "Decompressing LZMA"; |
| 59 | break; |
| 60 | case CBFS_COMPRESS_LZ4: |
| 61 | comp_name = "Decompressing LZ4"; |
| 62 | break; |
| 63 | default: |
| 64 | printk(BIOS_ERR, "ERROR: Unsupported compression\n"); |
| 65 | return true; |
| 66 | } |
| 67 | |
| 68 | printk(BIOS_INFO, "FIT: %s %s to %p\n", comp_name, node->name, dst); |
| 69 | |
| 70 | switch (node->compression) { |
| 71 | case CBFS_COMPRESS_NONE: |
| 72 | memcpy(dst, node->data, node->size); |
| 73 | true_size = node->size; |
| 74 | break; |
| 75 | case CBFS_COMPRESS_LZMA: |
| 76 | timestamp_add_now(TS_START_ULZMA); |
| 77 | true_size = ulzman(node->data, node->size, dst, region->size); |
| 78 | timestamp_add_now(TS_END_ULZMA); |
| 79 | break; |
| 80 | case CBFS_COMPRESS_LZ4: |
| 81 | timestamp_add_now(TS_START_ULZ4F); |
| 82 | true_size = ulz4fn(node->data, node->size, dst, region->size); |
| 83 | timestamp_add_now(TS_END_ULZ4F); |
| 84 | break; |
| 85 | default: |
| 86 | return true; |
| 87 | } |
| 88 | |
| 89 | if (!true_size) { |
| 90 | printk(BIOS_ERR, "ERROR: %s node failed!\n", comp_name); |
| 91 | return true; |
| 92 | } |
| 93 | |
| 94 | prog_segment_loaded(region->offset, true_size, 0); |
| 95 | |
| 96 | return false; |
| 97 | } |
| 98 | |
| 99 | /* |
| 100 | * Parse the uImage FIT, choose a configuration and extract images. |
| 101 | */ |
| 102 | void fit_payload(struct prog *payload) |
| 103 | { |
| 104 | struct device_tree *dt = NULL; |
| 105 | struct region kernel = {0}, fdt = {0}, initrd = {0}; |
| 106 | void *data; |
| 107 | |
| 108 | data = rdev_mmap_full(prog_rdev(payload)); |
| 109 | |
| 110 | if (data == NULL) |
| 111 | return; |
| 112 | |
| 113 | printk(BIOS_INFO, "FIT: Examine payload %s\n", payload->name); |
| 114 | |
| 115 | struct fit_config_node *config = fit_load(data); |
| 116 | |
| 117 | if (!config || !config->kernel_node) { |
| 118 | printk(BIOS_ERR, "ERROR: Could not load FIT\n"); |
| 119 | rdev_munmap(prog_rdev(payload), data); |
| 120 | return; |
| 121 | } |
| 122 | |
| 123 | if (config->fdt_node) { |
| 124 | dt = fdt_unflatten(config->fdt_node->data); |
| 125 | if (!dt) { |
| 126 | printk(BIOS_ERR, |
| 127 | "ERROR: Failed to unflatten the FDT.\n"); |
| 128 | rdev_munmap(prog_rdev(payload), data); |
| 129 | return; |
| 130 | } |
| 131 | |
| 132 | dt_apply_fixups(dt); |
| 133 | |
| 134 | /* Update device_tree */ |
| 135 | #if defined(CONFIG_LINUX_COMMAND_LINE) |
| 136 | fit_update_chosen(dt, (char *)CONFIG_LINUX_COMMAND_LINE); |
| 137 | #endif |
| 138 | fit_update_memory(dt); |
| 139 | } |
| 140 | |
| 141 | /* Collect infos for fit_payload_arch */ |
| 142 | kernel.size = config->kernel_node->size; |
| 143 | fdt.size = dt ? dt_flat_size(dt) : 0; |
| 144 | initrd.size = config->ramdisk_node ? config->ramdisk_node->size : 0; |
| 145 | |
| 146 | /* Invoke arch specific payload placement and fixups */ |
| 147 | if (!fit_payload_arch(payload, config, &kernel, &fdt, &initrd)) { |
| 148 | printk(BIOS_ERR, "ERROR: Failed to find free memory region\n"); |
| 149 | bootmem_dump_ranges(); |
| 150 | rdev_munmap(prog_rdev(payload), data); |
| 151 | return; |
| 152 | } |
| 153 | |
| 154 | /* Load the images to given position */ |
| 155 | if (config->fdt_node) { |
| 156 | /* Update device_tree */ |
| 157 | if (config->ramdisk_node) |
| 158 | fit_add_ramdisk(dt, (void *)initrd.offset, initrd.size); |
| 159 | |
| 160 | pack_fdt(&fdt, dt); |
| 161 | } |
| 162 | |
| 163 | if (config->ramdisk_node && |
| 164 | extract(&initrd, config->ramdisk_node)) { |
| 165 | printk(BIOS_ERR, "ERROR: Failed to extract initrd\n"); |
| 166 | rdev_munmap(prog_rdev(payload), data); |
| 167 | return; |
| 168 | } |
| 169 | |
| 170 | timestamp_add_now(TS_KERNEL_DECOMPRESSION); |
| 171 | |
| 172 | if (extract(&kernel, config->kernel_node)) { |
| 173 | printk(BIOS_ERR, "ERROR: Failed to extract kernel\n"); |
| 174 | rdev_munmap(prog_rdev(payload), data); |
| 175 | return; |
| 176 | } |
| 177 | |
| 178 | timestamp_add_now(TS_START_KERNEL); |
| 179 | |
| 180 | rdev_munmap(prog_rdev(payload), data); |
| 181 | } |