diff options
Diffstat (limited to 'util/romcc/tests/simple_test56.c')
-rw-r--r-- | util/romcc/tests/simple_test56.c | 43 |
1 files changed, 0 insertions, 43 deletions
diff --git a/util/romcc/tests/simple_test56.c b/util/romcc/tests/simple_test56.c deleted file mode 100644 index 570b4eeec3..0000000000 --- a/util/romcc/tests/simple_test56.c +++ /dev/null @@ -1,43 +0,0 @@ - -static void spd_enable_refresh(void) -{ - /* - * Effects: Uses serial presence detect to set the - * refresh rate in the DRAMC register. - * see spd_set_dramc for the other values. - * FIXME: Check for illegal/unsupported ram configurations and abort - */ - static const unsigned char refresh_rates[] = { - 0x01, /* Normal 15.625 us -> 15.6 us */ - 0x05, /* Reduced(.25X) 3.9 us -> 7.8 us */ - 0x05, /* Reduced(.5X) 7.8 us -> 7.8 us */ - 0x02, /* Extended(2x) 31.3 us -> 31.2 us */ - 0x03, /* Extended(4x) 62.5 us -> 62.4 us */ - 0x04, /* Extended(8x) 125 us -> 124.8 us */ - }; - /* Find the first dimm and assume the rest are the same */ - int byte; - unsigned device; - unsigned refresh_rate; - byte = -1; - device = 0x50; - while ((byte < 0) && (device <= 0x57)) { - byte = __builtin_inl(device); - device += 1; - } - if (byte < 0) { - /* We couldn't find anything we must have no memory */ - while(1); - } - byte &= 0x7f; - /* Default refresh rate be conservative */ - refresh_rate = 5; - /* see if the ram refresh is a supported one */ - if (byte < 6) { - refresh_rate = refresh_rates[byte]; - } - byte = __builtin_inb(0x57); - byte &= 0xf8; - byte |= refresh_rate; - __builtin_outb(byte, 0x57); -} |