Commit 73499682 authored by Elizabeth Oldham's avatar Elizabeth Oldham Committed by Ralf Baechle
Browse files

[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: default avatarRalf Baechle <ralf@linux-mips.org>
parent 427abfa2
......@@ -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;
......
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