diff options
Diffstat (limited to '')
-rw-r--r-- | grub-core/kern/coreboot/cbtable.c | 72 |
1 files changed, 72 insertions, 0 deletions
diff --git a/grub-core/kern/coreboot/cbtable.c b/grub-core/kern/coreboot/cbtable.c new file mode 100644 index 0000000..aec63db --- /dev/null +++ b/grub-core/kern/coreboot/cbtable.c @@ -0,0 +1,72 @@ +/* + * GRUB -- GRand Unified Bootloader + * Copyright (C) 2007,2008,2013 Free Software Foundation, Inc. + * + * GRUB 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, either version 3 of the License, or + * (at your option) any later version. + * + * GRUB 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 GRUB. If not, see <http://www.gnu.org/licenses/>. + */ + +#include <grub/i386/coreboot/memory.h> +#include <grub/coreboot/lbio.h> +#include <grub/types.h> +#include <grub/err.h> +#include <grub/misc.h> +#include <grub/dl.h> + +#pragma GCC diagnostic ignored "-Wcast-align" + +/* Helper for grub_linuxbios_table_iterate. */ +int +grub_linuxbios_check_signature (grub_linuxbios_table_header_t tbl_header) +{ + if (! grub_memcmp (tbl_header->signature, "LBIO", 4)) + return 1; + + return 0; +} + +grub_err_t +grub_linuxbios_table_iterate (int (*hook) (grub_linuxbios_table_item_t, + void *), + void *hook_data) +{ + grub_linuxbios_table_header_t table_header = grub_linuxbios_get_tables (); + grub_linuxbios_table_item_t table_item; + + if (!table_header) + return 0; + +signature_found: + + table_item = + (grub_linuxbios_table_item_t) ((char *) table_header + + table_header->header_size); + for (; table_item < (grub_linuxbios_table_item_t) ((char *) table_header + + table_header->header_size + + table_header->table_size); + table_item = (grub_linuxbios_table_item_t) ((char *) table_item + table_item->size)) + { + if (table_item->tag == GRUB_LINUXBIOS_MEMBER_LINK + && grub_linuxbios_check_signature ((grub_linuxbios_table_header_t) (grub_addr_t) + *(grub_uint64_t *) (table_item + 1))) + { + table_header = (grub_linuxbios_table_header_t) (grub_addr_t) + *(grub_uint64_t *) (table_item + 1); + goto signature_found; + } + if (hook (table_item, hook_data)) + return 1; + } + + return 0; +} |