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libpayload: Expose options_checksum_valid

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options_checksum_valid can be used as a fast test to
identify invalid CMOS data by checking the checksum.

Change-Id: I44635d4c5d389579ad82435907ba8658e1bd44bb
Signed-off-by: Patrick Georgi <patrick.georgi@secunet.com>
Reviewed-on: http://review.coreboot.org/586
Reviewed-by: Bernhard Urban <lewurm@gmail.com>
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
This commit is contained in:
Patrick Georgi
2012-01-16 15:03:11 +01:00
committed by Patrick Georgi
parent da59f9a8fb
commit 56f468d29b
2 changed files with 2 additions and 1 deletions
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2
payloads/libpayload/drivers/options.c
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@ -57,7 +57,7 @@ struct cb_cmos_option_table *get_system_option_table(void)
return phys_to_virt(lib_sysinfo.option_table); return phys_to_virt(lib_sysinfo.option_table);
} }
static int options_checksum_valid(const struct nvram_accessor *nvram) int options_checksum_valid(const struct nvram_accessor *nvram)
{ {
int i; int i;
int range_start = lib_sysinfo.cmos_range_start / 8; int range_start = lib_sysinfo.cmos_range_start / 8;

1
payloads/libpayload/include/libpayload.h
View File

@ -203,6 +203,7 @@ extern u8 *mem_accessor_base;
extern struct nvram_accessor *use_nvram, *use_mem; extern struct nvram_accessor *use_nvram, *use_mem;
struct cb_cmos_option_table *get_system_option_table(void); struct cb_cmos_option_table *get_system_option_table(void);
int options_checksum_valid(const struct nvram_accessor *nvram);
void fix_options_checksum_with(const struct nvram_accessor *nvram); void fix_options_checksum_with(const struct nvram_accessor *nvram);
void fix_options_checksum(void); void fix_options_checksum(void);
int get_option_with(const struct nvram_accessor *nvram, struct cb_cmos_option_table *option_table, void *dest, char *name); int get_option_with(const struct nvram_accessor *nvram, struct cb_cmos_option_table *option_table, void *dest, char *name);