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author | Kevin O'Connor <kevin@koconnor.net> | 2012-07-21 11:56:09 -0400 |
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committer | Kevin O'Connor <kevin@koconnor.net> | 2012-07-21 11:56:09 -0400 |
commit | 65802ad7c72bd038144b0ea71c03f8a96d10b3ff (patch) | |
tree | 6661e65d81dae41860f53e6c3def301e1f92bb41 /src/pmm.c | |
parent | afdeda03e078a9c6f586479716f911c40f3511b7 (diff) | |
download | seabios-hppa-65802ad7c72bd038144b0ea71c03f8a96d10b3ff.zip seabios-hppa-65802ad7c72bd038144b0ea71c03f8a96d10b3ff.tar.gz seabios-hppa-65802ad7c72bd038144b0ea71c03f8a96d10b3ff.tar.bz2 |
Minor - clear unused f-segment data at start of f-segment.
Zero the space - some old applications can use the space for UMB if it
is zeroed.
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
Diffstat (limited to 'src/pmm.c')
-rw-r--r-- | src/pmm.c | 5 |
1 files changed, 4 insertions, 1 deletions
@@ -287,7 +287,6 @@ malloc_finalize(void) dprintf(3, "malloc finalize\n"); // Place an optionrom signature around used low mem area. - struct allocinfo_s *info = findLast(&ZoneLow); u32 base = rom_get_top(); struct rom_header *dummyrom = (void*)base; dummyrom->signature = OPTION_ROM_SIGNATURE; @@ -296,6 +295,10 @@ malloc_finalize(void) memset((void*)RomEnd, 0, base-RomEnd); dprintf(1, "Space available for UMB: %08x-%08x\n", RomEnd, base); + // Clear unused f-seg ram. + struct allocinfo_s *info = findLast(&ZoneFSeg); + memset(info->dataend, 0, info->allocend - info->dataend); + // Give back unused high ram. info = findLast(&ZoneHigh); if (info) { |