diff options
| author | Michal Soltys <soltys@ziu.info> | 2010-09-28 19:57:28 +0200 |
|---|---|---|
| committer | Michal Soltys <soltys@ziu.info> | 2010-10-08 12:40:51 +0200 |
| commit | 81f86009696b5c7eff76e1981e967367235c5f7c (patch) | |
| tree | 9f7d86b09f75877da049c9fab6321b8547255cd0 /com32/chain/utility.h | |
| parent | 71485af3c0b47409fbd721d83f20fb8fcac76e42 (diff) | |
| download | syslinux-81f86009696b5c7eff76e1981e967367235c5f7c.tar.gz | |
com32/chain: utility's lba2chs update
This patch adds 3 modes of operation to lba2chs:
l2c_cnul - strict cylinder mode, using at most the value returned by
13h/48h or 13h/08h
l2c_cadd - allow using 1 cylinder more. Only if cylinders are less than
1024 and total drive's lba size is not on a cylinder boundary.
l2c_max - allow using any cylinder number.
Modes have effect only if CHS geometry (cbios) is valid. chain.c uses
l2c_cadd.
Signed-off-by: Michal Soltys <soltys@ziu.info>
Diffstat (limited to 'com32/chain/utility.h')
| -rw-r--r-- | com32/chain/utility.h | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/com32/chain/utility.h b/com32/chain/utility.h index 4f50e0ea..db55bc7d 100644 --- a/com32/chain/utility.h +++ b/com32/chain/utility.h @@ -13,10 +13,14 @@ #define bpbVNT 6 #define bpbV70 7 +#define l2c_cnul 0 +#define l2c_cadd 1 +#define l2c_cmax 2 + void error(const char *msg); int guid_is0(const struct guid *guid); void wait_key(void); -uint32_t lba2chs(const struct disk_info *di, uint64_t lba); +uint32_t lba2chs(const struct disk_info *di, uint64_t lba, uint32_t mode); uint32_t get_file_lba(const char *filename); int drvoff_detect(int type, unsigned int *off); int bpb_detect(const uint8_t *bpb); |