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| author | Kevin O'Connor <kevin@koconnor.net> | 2009-05-17 10:31:34 -0400 |
|---|---|---|
| committer | Kevin O'Connor <kevin@koconnor.net> | 2009-05-17 10:31:34 -0400 |
| commit | 49553a4bdc31c75331fc1ba602ab440937ddab97 (patch) | |
| tree | d9aa85633f42129bd55b35ccee20da7009b950a5 /src/biosvar.h | |
| parent | 99e08b7fc3a6c5279a0d2d23c7d485698190ac50 (diff) | |
| download | seabios-hppa-49553a4bdc31c75331fc1ba602ab440937ddab97.zip seabios-hppa-49553a4bdc31c75331fc1ba602ab440937ddab97.tar.gz seabios-hppa-49553a4bdc31c75331fc1ba602ab440937ddab97.tar.bz2 | |
Verify ebda segment looks sane before using during resume.
Diffstat (limited to 'src/biosvar.h')
| -rw-r--r-- | src/biosvar.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/src/biosvar.h b/src/biosvar.h index fceb876..c0b46cc 100644 --- a/src/biosvar.h +++ b/src/biosvar.h @@ -235,6 +235,12 @@ struct extended_bios_data_area_s { u8 extra_stack[512] __aligned(8); } PACKED; +// The initial size and location of EBDA +#define EBDA_SIZE_START \ + DIV_ROUND_UP(sizeof(struct extended_bios_data_area_s), 1024) +#define EBDA_SEGMENT_START \ + FLATPTR_TO_SEG((640 - EBDA_SIZE_START) * 1024) + // Accessor functions static inline u16 get_ebda_seg() { return GET_BDA(ebda_seg); |