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| author | roy zang <tie-fei.zang@freescale.com> | 2006-11-02 18:49:51 +0800 |
|---|---|---|
| committer | Zang Tiefei <roy@bus.ap.freescale.net> | 2006-11-02 18:49:51 +0800 |
| commit | 4c52783b3d024e153c4972b97332e314bc3bdc46 (patch) | |
| tree | ffc40c217c1b6b32e47837edaa0981f6e62403f5 /lib_ppc/extable.c | |
| parent | 69366bf42f22d67efce8da3f8c40a43d4a3c2695 (diff) | |
| download | u-boot-imx-4c52783b3d024e153c4972b97332e314bc3bdc46.zip u-boot-imx-4c52783b3d024e153c4972b97332e314bc3bdc46.tar.gz u-boot-imx-4c52783b3d024e153c4972b97332e314bc3bdc46.tar.bz2 | |
General code modification for mpc7448hpc2 board support.
1. Add 7447A and 7448 processor support.
2. Add the following flags.
CFG_CONFIG_BUS_CLK : If the 74xx bus frequency can be configured dynamically
(such as by switch on board), this flag should be set.
CFG_EXCEPTION_AFTER_RELOCATE: If an exception occurs after the u-boot
relocates to RAM, this flag should be set.
CFG_SERIAL_HANG_IN_EXCEPTION: If the print out function will cause the
system hang in exception, this flag should be set.
There is a design issue for tsi108/109 pci configure read. When pci scan
the slots, if there is no pci card, the tsi108/9 will cause a machine
check exception for mpc7448 processor.
Signed-off-by: Alexandre Bounine <alexandreb@tundra.com>
Signed-off-by: Roy Zang <tie-fei.zang@freescale.com>
Diffstat (limited to 'lib_ppc/extable.c')
| -rw-r--r-- | lib_ppc/extable.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/lib_ppc/extable.c b/lib_ppc/extable.c index d92f142..34b5d46 100644 --- a/lib_ppc/extable.c +++ b/lib_ppc/extable.c @@ -50,14 +50,22 @@ search_one_table(const struct exception_table_entry *first, const struct exception_table_entry *last, unsigned long value) { + DECLARE_GLOBAL_DATA_PTR; + while (first <= last) { const struct exception_table_entry *mid; long diff; mid = (last - first) / 2 + first; +#ifdef CFG_EXCEPTION_AFTER_RELOCATE + diff = (mid->insn + gd->reloc_off) - value; + if (diff == 0) + return (mid->fixup + gd->reloc_off); +#else diff = mid->insn - value; if (diff == 0) return mid->fixup; +#endif else if (diff < 0) first = mid+1; else @@ -75,8 +83,10 @@ search_exception_table(unsigned long addr) /* There is only the kernel to search. */ ret = search_one_table(__start___ex_table, __stop___ex_table-1, addr); +#if !defined(CFG_SERIAL_HANG_IN_EXCEPTION) if (ex_tab_message) printf("Bus Fault @ 0x%08lx, fixup 0x%08lx\n", addr, ret); +#endif if (ret) return ret; return 0; |