[LinuxBIOS] [PATCH v3] v2, v3: Bug in CAR setup with CacheSize!={4k, 8k, 16k}
yhlu
yinghailu at gmail.com
Fri Nov 30 08:59:43 CET 2007
my own tree have
#if CacheSize < 0x8000
/* enable caching for 16K/8K/4K using fixed mtrr */
movl $0x269, %ecx /* fix4k_cc000*/
#if CacheSize == 0x4000
movl $0x06060606, %edx /* WB IO type */
#endif
#if CacheSize == 0x2000
movl $0x06060000, %edx /* WB IO type */
#endif
#if CacheSize == 0x1000
movl $0x06000000, %edx /* WB IO type */
#endif
xorl %eax, %eax
wrmsr
#endif
maybe i didn't post sth...
normally we can use 4k only at first.
run_time decide is not good. for example REV E, you could use 64k. for
for REV F you can only use 48K.
Family 10h need more tricks.
YH
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