diff options
| author | Aaron Durbin <adurbin@chromium.org> | 2012-12-18 17:01:57 -0600 |
|---|---|---|
| committer | Ronald G. Minnich <rminnich@gmail.com> | 2013-03-14 20:13:19 +0100 |
| commit | f7fa218359cdfa981a2e6ea8c8eba32cb0567693 (patch) | |
| tree | 3001b602af3e707d5653a1412ff5b9deaed87fba | |
| parent | 0160d76152ecfbcbed599bb697917b423931b92b (diff) | |
x86: improve lb_cleanup_memory_ranges
There are 2 issues in lb_cleanup_memory_ranges(). The first
is that during sort there is a neighbor comparison that initially
starts with the current entry. The second issue is that merging
has an off by one comparison for adjacent entries.
Before:
coreboot memory table:
0. 0000000000000000-0000000000000fff: CONFIGURATION TABLES
1. 0000000000001000-000000000009ffff: RAM
2. 00000000000a0000-00000000000fffff: RESERVED
3. 0000000000100000-0000000000efffff: RAM
4. 0000000000f00000-0000000000ffffff: RESERVED
5. 0000000001000000-00000000acebffff: RAM
6. 00000000acec0000-00000000acffffff: CONFIGURATION TABLES
7. 00000000ad000000-00000000af9fffff: RESERVED
8. 00000000f0000000-00000000f3ffffff: RESERVED
9. 00000000fed10000-00000000fed17fff: RESERVED
10. 00000000fed18000-00000000fed18fff: RESERVED
11. 00000000fed19000-00000000fed19fff: RESERVED
12. 00000000fed84000-00000000fed84fff: RESERVED
13. 0000000100000000-000000018f5fffff: RAM
After:
coreboot memory table:
0. 0000000000000000-0000000000000fff: CONFIGURATION TABLES
1. 0000000000001000-000000000009ffff: RAM
2. 00000000000a0000-00000000000fffff: RESERVED
3. 0000000000100000-0000000000efffff: RAM
4. 0000000000f00000-0000000000ffffff: RESERVED
5. 0000000001000000-00000000acebffff: RAM
6. 00000000acec0000-00000000acffffff: CONFIGURATION TABLES
7. 00000000ad000000-00000000af9fffff: RESERVED
8. 00000000f0000000-00000000f3ffffff: RESERVED
9. 00000000fed10000-00000000fed19fff: RESERVED
10. 00000000fed84000-00000000fed84fff: RESERVED
11. 0000000100000000-000000018f5fffff: RAM
Change-Id: I656aab61b0ed4711c9dceaedb81c290d040ffdec
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: http://review.coreboot.org/2671
Tested-by: build bot (Jenkins)
Reviewed-by: Marc Jones <marc.jones@se-eng.com>
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
| -rw-r--r-- | src/arch/x86/boot/coreboot_table.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/src/arch/x86/boot/coreboot_table.c b/src/arch/x86/boot/coreboot_table.c index e456e1ebfa..ebeef2dd29 100644 --- a/src/arch/x86/boot/coreboot_table.c +++ b/src/arch/x86/boot/coreboot_table.c @@ -414,7 +414,7 @@ static void lb_cleanup_memory_ranges(struct lb_memory *mem) /* Sort the lb memory ranges */ for(i = 0; i < entries; i++) { uint64_t entry_start = unpack_lb64(mem->map[i].start); - for(j = i; j < entries; j++) { + for(j = i + 1; j < entries; j++) { uint64_t temp_start = unpack_lb64(mem->map[j].start); if (temp_start < entry_start) { struct lb_memory_range tmp; @@ -435,7 +435,7 @@ static void lb_cleanup_memory_ranges(struct lb_memory *mem) end = start + unpack_lb64(mem->map[i].size); nstart = unpack_lb64(mem->map[i + 1].start); nend = nstart + unpack_lb64(mem->map[i + 1].size); - if ((start <= nstart) && (end > nstart)) { + if ((start <= nstart) && (end >= nstart)) { if (start > nstart) { start = nstart; } |