diff options
author | Elizabeth Oldham <beth@mips.com> | 2006-06-06 09:57:09 (GMT) |
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committer | Ralf Baechle <ralf@linux-mips.org> | 2006-06-19 16:39:13 (GMT) |
commit | 734996820fd02b52a3fa0fcc09bdb914934bea4c (patch) | |
tree | 7d12e625c842bfc605b83506fd2423a44fad53ed /arch/mips/mips-boards | |
parent | 427abfa28afedffadfca9dd8b067eb6d36bac53f (diff) | |
download | linux-fsl-qoriq-734996820fd02b52a3fa0fcc09bdb914934bea4c.tar.xz |
[MIPS] Malta: Handle byteswapping hardare bug in big endian mode.
The SOC-it system controller running in big endian mode might forget
byteswapping when DMAing to the last word of physical memory. Fixed by
ignoring the last page of memory.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/mips-boards')
-rw-r--r-- | arch/mips/mips-boards/generic/memory.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/arch/mips/mips-boards/generic/memory.c b/arch/mips/mips-boards/generic/memory.c index bc4d093..fd49256 100644 --- a/arch/mips/mips-boards/generic/memory.c +++ b/arch/mips/mips-boards/generic/memory.c @@ -76,6 +76,15 @@ struct prom_pmemblock * __init prom_getmdesc(void) memsize = simple_strtol(memsize_str, NULL, 0); } } + +#ifdef CONFIG_CPU_BIG_ENDIAN + /* + * SOC-it swaps, or perhaps doesn't swap, when DMA'ing the last + * word of physical memory + */ + memsize -= PAGE_SIZE; +#endif + memset(mdesc, 0, sizeof(mdesc)); mdesc[0].type = yamon_dontuse; |