diff options
Diffstat (limited to 'src/lib/fit_payload.c')
| -rw-r--r-- | src/lib/fit_payload.c | 181 |
1 files changed, 181 insertions, 0 deletions
diff --git a/src/lib/fit_payload.c b/src/lib/fit_payload.c new file mode 100644 index 0000000000..ada22e8747 --- /dev/null +++ b/src/lib/fit_payload.c @@ -0,0 +1,181 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2003-2004 Eric Biederman + * Copyright (C) 2005-2010 coresystems GmbH + * Copyright (C) 2014 Google Inc. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include <console/console.h> +#include <bootmem.h> +#include <cbmem.h> +#include <device/resource.h> +#include <stdlib.h> +#include <commonlib/region.h> +#include <fit.h> +#include <program_loading.h> +#include <timestamp.h> +#include <cbfs.h> +#include <string.h> +#include <commonlib/compression.h> +#include <lib.h> +#include <fit_payload.h> + +/* Pack the device_tree and place it at given position. */ +static void pack_fdt(struct region *fdt, struct device_tree *dt) +{ + printk(BIOS_INFO, "FIT: Flattening FDT to %p\n", + (void *)fdt->offset); + + dt_flatten(dt, (void *)fdt->offset); + prog_segment_loaded(fdt->offset, fdt->size, 0); +} + +/** + * Extract a node to given regions. + * Returns true on error, false on success. + */ +static bool extract(struct region *region, struct fit_image_node *node) +{ + void *dst = (void *)region->offset; + const char *comp_name; + size_t true_size = 0; + + switch (node->compression) { + case CBFS_COMPRESS_NONE: + comp_name = "Relocating uncompressed"; + break; + case CBFS_COMPRESS_LZMA: + comp_name = "Decompressing LZMA"; + break; + case CBFS_COMPRESS_LZ4: + comp_name = "Decompressing LZ4"; + break; + default: + printk(BIOS_ERR, "ERROR: Unsupported compression\n"); + return true; + } + + printk(BIOS_INFO, "FIT: %s %s to %p\n", comp_name, node->name, dst); + + switch (node->compression) { + case CBFS_COMPRESS_NONE: + memcpy(dst, node->data, node->size); + true_size = node->size; + break; + case CBFS_COMPRESS_LZMA: + timestamp_add_now(TS_START_ULZMA); + true_size = ulzman(node->data, node->size, dst, region->size); + timestamp_add_now(TS_END_ULZMA); + break; + case CBFS_COMPRESS_LZ4: + timestamp_add_now(TS_START_ULZ4F); + true_size = ulz4fn(node->data, node->size, dst, region->size); + timestamp_add_now(TS_END_ULZ4F); + break; + default: + return true; + } + + if (!true_size) { + printk(BIOS_ERR, "ERROR: %s node failed!\n", comp_name); + return true; + } + + prog_segment_loaded(region->offset, true_size, 0); + + return false; +} + +/* + * Parse the uImage FIT, choose a configuration and extract images. + */ +void fit_payload(struct prog *payload) +{ + struct device_tree *dt = NULL; + struct region kernel = {0}, fdt = {0}, initrd = {0}; + void *data; + + data = rdev_mmap_full(prog_rdev(payload)); + + if (data == NULL) + return; + + printk(BIOS_INFO, "FIT: Examine payload %s\n", payload->name); + + struct fit_config_node *config = fit_load(data); + + if (!config || !config->kernel_node) { + printk(BIOS_ERR, "ERROR: Could not load FIT\n"); + rdev_munmap(prog_rdev(payload), data); + return; + } + + if (config->fdt_node) { + dt = fdt_unflatten(config->fdt_node->data); + if (!dt) { + printk(BIOS_ERR, + "ERROR: Failed to unflatten the FDT.\n"); + rdev_munmap(prog_rdev(payload), data); + return; + } + + dt_apply_fixups(dt); + + /* Update device_tree */ +#if defined(CONFIG_LINUX_COMMAND_LINE) + fit_update_chosen(dt, (char *)CONFIG_LINUX_COMMAND_LINE); +#endif + fit_update_memory(dt); + } + + /* Collect infos for fit_payload_arch */ + kernel.size = config->kernel_node->size; + fdt.size = dt ? dt_flat_size(dt) : 0; + initrd.size = config->ramdisk_node ? config->ramdisk_node->size : 0; + + /* Invoke arch specific payload placement and fixups */ + if (!fit_payload_arch(payload, config, &kernel, &fdt, &initrd)) { + printk(BIOS_ERR, "ERROR: Failed to find free memory region\n"); + bootmem_dump_ranges(); + rdev_munmap(prog_rdev(payload), data); + return; + } + + /* Load the images to given position */ + if (config->fdt_node) { + /* Update device_tree */ + if (config->ramdisk_node) + fit_add_ramdisk(dt, (void *)initrd.offset, initrd.size); + + pack_fdt(&fdt, dt); + } + + if (config->ramdisk_node && + extract(&initrd, config->ramdisk_node)) { + printk(BIOS_ERR, "ERROR: Failed to extract initrd\n"); + rdev_munmap(prog_rdev(payload), data); + return; + } + + timestamp_add_now(TS_KERNEL_DECOMPRESSION); + + if (extract(&kernel, config->kernel_node)) { + printk(BIOS_ERR, "ERROR: Failed to extract kernel\n"); + rdev_munmap(prog_rdev(payload), data); + return; + } + + timestamp_add_now(TS_START_KERNEL); + + rdev_munmap(prog_rdev(payload), data); +} |