Revision 40b6ecc6
| b/hw/pc.c | ||
|---|---|---|
| 215 | 215 |
cmos_init_hd(0x1a, 0x24, hd_table[1]); |
| 216 | 216 |
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| 217 | 217 |
val = 0; |
| 218 |
for (i = 0; i < 4; i++) |
|
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for (i = 0; i < 4; i++) {
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|
| 219 | 219 |
if (hd_table[i]) {
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| 220 | 220 |
int cylinders, heads, sectors; |
| 221 | 221 |
uint8_t translation; |
| 222 |
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/* NOTE: bdrv_get_geometry_hint() returns the geometry |
|
| 223 |
that the hard disk returns. It is always such that: 1 <= |
|
| 224 |
sects <= 63, 1 <= heads <= 16, 1 <= cylinders <= |
|
| 225 |
16383. The BIOS geometry can be different. */ |
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| 223 | 226 |
bdrv_get_geometry_hint(hd_table[i], &cylinders, &heads, §ors); |
| 224 | 227 |
if (cylinders <= 1024 && heads <= 16 && sectors <= 63) {
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| 225 | 228 |
/* No translation. */ |
| 226 | 229 |
translation = 0; |
| 227 |
} else if (cylinders * heads > 131072) {
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| 230 |
} else {
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| 228 | 231 |
/* LBA translation. */ |
| 229 | 232 |
translation = 1; |
| 230 |
} else {
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/* LARGE translation. */ |
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translation = 2; |
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| 233 | 233 |
} |
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| 235 | 234 |
val |= translation << (i * 2); |
| 236 | 235 |
} |
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} |
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| 237 | 237 |
rtc_set_memory(s, 0x39, val); |
| 238 | 238 |
|
| 239 | 239 |
/* Disable check of 0x55AA signature on the last two bytes of |
Also available in: Unified diff