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head/sys/amd64/amd64/machdep.c
| Show First 20 Lines • Show All 1,242 Lines • ▼ Show 20 Lines | getmemsize(caddr_t kmdp, u_int64_t first) | ||||
| if (basemem == 0 || basemem > 640) { | if (basemem == 0 || basemem > 640) { | ||||
| if (bootverbose) | if (bootverbose) | ||||
| printf( | printf( | ||||
| "Memory map doesn't contain a basemem segment, faking it"); | "Memory map doesn't contain a basemem segment, faking it"); | ||||
| basemem = 640; | basemem = 640; | ||||
| } | } | ||||
| /* | /* | ||||
| * Make hole for "AP -> long mode" bootstrap code. The | |||||
| * mp_bootaddress vector is only available when the kernel | |||||
| * is configured to support APs and APs for the system start | |||||
| * in real mode mode (e.g. SMP bare metal). | |||||
| */ | |||||
| if (init_ops.mp_bootaddress) | |||||
| init_ops.mp_bootaddress(physmap, &physmap_idx); | |||||
| /* | |||||
| * Maxmem isn't the "maximum memory", it's one larger than the | * Maxmem isn't the "maximum memory", it's one larger than the | ||||
| * highest page of the physical address space. It should be | * highest page of the physical address space. It should be | ||||
| * called something like "Maxphyspage". We may adjust this | * called something like "Maxphyspage". We may adjust this | ||||
| * based on ``hw.physmem'' and the results of the memory test. | * based on ``hw.physmem'' and the results of the memory test. | ||||
| */ | */ | ||||
| Maxmem = atop(physmap[physmap_idx + 1]); | Maxmem = atop(physmap[physmap_idx + 1]); | ||||
| #ifdef MAXMEM | #ifdef MAXMEM | ||||
| Show All 20 Lines | #endif | ||||
| * in the system. | * in the system. | ||||
| */ | */ | ||||
| if (Maxmem > atop(physmap[physmap_idx + 1])) | if (Maxmem > atop(physmap[physmap_idx + 1])) | ||||
| Maxmem = atop(physmap[physmap_idx + 1]); | Maxmem = atop(physmap[physmap_idx + 1]); | ||||
| if (atop(physmap[physmap_idx + 1]) != Maxmem && | if (atop(physmap[physmap_idx + 1]) != Maxmem && | ||||
| (boothowto & RB_VERBOSE)) | (boothowto & RB_VERBOSE)) | ||||
| printf("Physical memory use set to %ldK\n", Maxmem * 4); | printf("Physical memory use set to %ldK\n", Maxmem * 4); | ||||
| /* | |||||
| * Make hole for "AP -> long mode" bootstrap code. The | |||||
| * mp_bootaddress vector is only available when the kernel | |||||
| * is configured to support APs and APs for the system start | |||||
| * in real mode mode (e.g. SMP bare metal). | |||||
| */ | |||||
| if (init_ops.mp_bootaddress) | |||||
| init_ops.mp_bootaddress(physmap, &physmap_idx); | |||||
| /* call pmap initialization to make new kernel address space */ | /* call pmap initialization to make new kernel address space */ | ||||
| pmap_bootstrap(&first); | pmap_bootstrap(&first); | ||||
| /* | /* | ||||
| * Size up each available chunk of physical memory. | * Size up each available chunk of physical memory. | ||||
| * | * | ||||
| * XXX Some BIOSes corrupt low 64KB between suspend and resume. | * XXX Some BIOSes corrupt low 64KB between suspend and resume. | ||||
| ▲ Show 20 Lines • Show All 1,344 Lines • Show Last 20 Lines | |||||