diff options
author | Aaron Durbin <adurbin@chromium.org> | 2014-02-24 14:56:34 -0600 |
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committer | Aaron Durbin <adurbin@google.com> | 2014-03-03 19:48:02 +0100 |
commit | bdf913ab010c99db8e64845f5b5837c9008609dc (patch) | |
tree | 75b62500dfe2edfa7846febb7924bde551b16baa /src/lib/loaders/load_and_run_payload.c | |
parent | 9cd96b409646418040f5c046a1366cfc38251d70 (diff) |
coreboot: unify infrastructure for loading payloads
A payload can be loaded either from a vboot region or from cbfs.
Provide a common place for choosing where the payload is loaded
from. Additionally, place the logic in the 'loaders' directory
similarly to the ramstage loader infrastructure.
Change-Id: I6b0034ea5ebd04a3d058151819ac77a126a6bfe2
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: http://review.coreboot.org/5296
Tested-by: build bot (Jenkins)
Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
Reviewed-by: Edward O'Callaghan <eocallaghan@alterapraxis.com>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Diffstat (limited to 'src/lib/loaders/load_and_run_payload.c')
-rw-r--r-- | src/lib/loaders/load_and_run_payload.c | 81 |
1 files changed, 81 insertions, 0 deletions
diff --git a/src/lib/loaders/load_and_run_payload.c b/src/lib/loaders/load_and_run_payload.c new file mode 100644 index 0000000000..46db93c719 --- /dev/null +++ b/src/lib/loaders/load_and_run_payload.c @@ -0,0 +1,81 @@ +/* + * This file is part of the coreboot project. + * + * 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. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include <stdint.h> +#include <stdlib.h> +#include <console/console.h> +#include <boot/coreboot_tables.h> +#include <payload_loader.h> + +extern const struct payload_loader_ops vboot_payload_loader; +extern const struct payload_loader_ops cbfs_payload_loader; + +static const struct payload_loader_ops *payload_ops[] = { +#if CONFIG_VBOOT_VERIFY_FIRMWARE + &vboot_payload_loader, +#endif + &cbfs_payload_loader, +}; + +static struct payload global_payload = { + .name = CONFIG_CBFS_PREFIX "/payload", +}; + +struct payload *payload_load(void) +{ + int i; + void *entry; + struct lb_memory *mem; + const struct payload_loader_ops *ops; + struct payload *payload = &global_payload; + + for (i = 0; i < ARRAY_SIZE(payload_ops); i++) { + ops = payload_ops[i]; + if (ops->locate(payload) < 0) { + printk(BIOS_DEBUG, "%s: could not locate payload.\n", + ops->name); + continue; + } + printk(BIOS_DEBUG, "%s: located payload @ %p, %zu bytes.\n", + ops->name, payload->backing_store.data, + payload->backing_store.size); + break; + } + + if (i == ARRAY_SIZE(payload_ops)) + return NULL; + + mem = get_lb_mem(); + entry = selfload(mem, payload->backing_store.data); + + if (entry == NULL) + return NULL; + + payload->entry = entry; + + return payload; +} + +void payload_run(const struct payload *payload) +{ + if (payload == NULL) + return; + + selfboot(payload->entry); +} |