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| Line 390... | Line 390... | ||
| 390 | break; |
390 | break; |
| 391 | } |
391 | } |
| 392 | } |
392 | } |
| 393 | } |
393 | } |
| 394 | 394 | ||
| - | 395 | ||
| 395 | /* |
396 | /* |
| 396 | * Kernel thread for bringing up application processors. It becomes clear |
397 | * Kernel thread for bringing up application processors. It becomes clear |
| 397 | * that we need an arrangement like this (AP's being initialized by a kernel |
398 | * that we need an arrangement like this (AP's being initialized by a kernel |
| 398 | * thread), for a thread has its dedicated stack. (The stack used during the |
399 | * thread), for a thread has its dedicated stack. (The stack used during the |
| 399 | * BSP initialization (prior the very first call to scheduler()) will be used |
400 | * BSP initialization (prior the very first call to scheduler()) will be used |
| Line 412... | Line 413... | ||
| 412 | * Processor entries immediately follow the configuration table header. |
413 | * Processor entries immediately follow the configuration table header. |
| 413 | */ |
414 | */ |
| 414 | pr = processor_entries; |
415 | pr = processor_entries; |
| 415 | 416 | ||
| 416 | /* |
417 | /* |
| 417 | * Grab a frame and map its address to page 0. This is a hack which |
- | |
| 418 | * accesses data in frame 0. Note that page 0 is not present because |
- | |
| 419 | * of nil reference bug catching. |
418 | * We need to access data in frame 0. |
| 420 | */ |
419 | */ |
| 421 | frame = frame_alloc(FRAME_KA); |
420 | frame = frame_alloc(0); |
| 422 | map_page_to_frame(frame,0,PAGE_CACHEABLE,0); |
421 | map_page_to_frame(frame,0,PAGE_CACHEABLE,0); |
| 423 | 422 | ||
| 424 | /* |
423 | /* |
| 425 | * Set the warm-reset vector to the real-mode address of 4K-aligned ap_boot() |
424 | * Set the warm-reset vector to the real-mode address of 4K-aligned ap_boot() |
| 426 | */ |
425 | */ |