From 1b305bdc754c8468e1d5d858f5dcf8a7a0a4bb7a Mon Sep 17 00:00:00 2001 From: Zang Roy-r61911 Date: Wed, 9 May 2007 08:10:57 +0800 Subject: Search the exception table with linear algorithm Search the exception table with linear algorithm instead of bisecting algorithm. Because the exception table might be unsorted. Signed-off-by: Roy Zang --- lib_ppc/extable.c | 39 ++++++++++++++++++--------------------- 1 file changed, 18 insertions(+), 21 deletions(-) (limited to 'lib_ppc/extable.c') diff --git a/lib_ppc/extable.c b/lib_ppc/extable.c index b14d661bbea..8354411f01f 100644 --- a/lib_ppc/extable.c +++ b/lib_ppc/extable.c @@ -52,30 +52,27 @@ search_one_table(const struct exception_table_entry *first, const struct exception_table_entry *last, unsigned long value) { - while (first <= last) { - const struct exception_table_entry *mid; - long diff; - - mid = (last - first) / 2 + first; - if ((ulong) mid > CFG_MONITOR_BASE) { - /* exception occurs in FLASH, before u-boot relocation. - * No relocation offset is needed. - */ - diff = mid->insn - value; + long diff; + if ((ulong) first > CFG_MONITOR_BASE) { + /* exception occurs in FLASH, before u-boot relocation. + * No relocation offset is needed. + */ + while (first <= last) { + diff = first->insn - value; if (diff == 0) - return mid->fixup; - } else { - /* exception occurs in RAM, after u-boot relocation. - * A relocation offset should be added. - */ - diff = (mid->insn + gd->reloc_off) - value; + return first->fixup; + first++; + } + } else { + /* exception occurs in RAM, after u-boot relocation. + * A relocation offset should be added. + */ + while (first <= last) { + diff = (first->insn + gd->reloc_off) - value; if (diff == 0) - return (mid->fixup + gd->reloc_off); + return (first->fixup + gd->reloc_off); + first++; } - if (diff < 0) - first = mid + 1; - else - last = mid - 1; } return 0; } -- cgit v1.2.3 From c92409812206ac67a7fa7aae298539a9c3804a46 Mon Sep 17 00:00:00 2001 From: Grzegorz Bernacki Date: Tue, 31 Jul 2007 18:51:48 +0200 Subject: [ppc440SPe] Graceful recovery from machine check during PCIe configuration During config transactions on the PCIe bus an attempt to scan for a non-existent device can lead to a machine check exception with certain peripheral devices. In order to avoid crashing in such scenarios the instrumented versions of the config cycle read routines are introduced, so the exceptions fixups framework can gracefully recover. Signed-off-by: Grzegorz Bernacki Acked-by: Rafal Jaworowski --- lib_ppc/extable.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'lib_ppc/extable.c') diff --git a/lib_ppc/extable.c b/lib_ppc/extable.c index 8354411f01f..2d995fa30a3 100644 --- a/lib_ppc/extable.c +++ b/lib_ppc/extable.c @@ -89,7 +89,7 @@ search_exception_table(unsigned long addr) /* if the serial port does not hang in exception, printf can be used */ #if !defined(CFG_SERIAL_HANG_IN_EXCEPTION) if (ex_tab_message) - printf("Bus Fault @ 0x%08lx, fixup 0x%08lx\n", addr, ret); + debug("Bus Fault @ 0x%08lx, fixup 0x%08lx\n", addr, ret); #endif if (ret) return ret; -- cgit v1.2.3