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1 #include <efi.h>
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2 #include <efilib.h>
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3
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1
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4 #include "registers.h"
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5
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0
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6 EFI_STATUS
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7 efi_main(EFI_HANDLE image, EFI_SYSTEM_TABLE *systab)
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8 {
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9 InitializeLib(image, systab);
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10
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11 Print(L"test start.\n");
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12
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13 UINTN map_size, cookie, size, version;
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14 map_size = EFI_PAGE_SIZE * 2;
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15 EFI_MEMORY_DESCRIPTOR *md;
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16
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17 EFI_STATUS status = uefi_call_wrapper(BS->AllocatePool, 3, EfiLoaderData, map_size, &md);
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18
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19 if (EFI_ERROR(status)) {
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20 Print(L"error 'allocate pool' %r \n", status);
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21 }
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22
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23 status = uefi_call_wrapper(BS->GetMemoryMap, 5, &map_size, md, &cookie, &size, &version);
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24 if (EFI_ERROR(status)) {
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25 Print(L"error 'get memory map' %r \n", status);
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26 }
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27
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28 /*
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29 UINTN nr_map = map_size/size;
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30
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31 UINTN i;
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32 for (i=0; i <nr_map ;i++) {
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33 EFI_MEMORY_DESCRIPTOR p = md[i];
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34 switch (p.Type) {
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35 case EfiReservedMemoryType:
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36 Print(L"| reserved memory.");
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37 break;
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38 case EfiLoaderCode:
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39 Print(L"| loader code.");
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40 break;
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41 case EfiLoaderData:
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42 Print(L"| loader data.");
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43 break;
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44 case EfiBootServicesCode:
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45 Print(L"| boot services code.");
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46 break;
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47 case EfiBootServicesData:
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48 Print(L"| boot services data.");
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49 break;
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50 case EfiConventionalMemory:
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51 Print(L"| conventional memory.");
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52 break;
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53 case EfiUnusableMemory:
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54 Print(L"| unusable memory.");
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55 break;
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56 case EfiACPIReclaimMemory:
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57 Print(L"| ACPI reclaim memory.");
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58 break;
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59 case EfiACPIMemoryNVS:
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60 Print(L"| ACPI memory NVS.");
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61 break;
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62 case EfiMemoryMappedIO:
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63 Print(L"| memory mapped IO.");
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64 break;
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65 case EfiMemoryMappedIOPortSpace:
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66 Print(L"| memory mapped IO port space.");
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67 break;
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68 case EfiPalCode:
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69 Print(L"| pal code. ");
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70 break;
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71 case EfiMaxMemoryType:
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72 Print(L"| max memory type.");
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73 break;
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74 }
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75 }
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76 */
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77
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78 status = uefi_call_wrapper(BS->ExitBootServices, 2, image, cookie);
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79
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80 if (EFI_ERROR(status)) {
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81 Print(L"error 'exit boot services' %r \n", status);
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82 }
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83
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1
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84 asm volatile ("cli" ::);
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85
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86 cr0_t cr0;
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87 asm volatile("mov %%cr0,%0\n\t" : "=r" (cr0));
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0
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88 while(1) { }
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1
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89 cr0.pg = 0;
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90 asm volatile("mov %0, %%cr0" : : "r" (cr0));
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91
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0
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92
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93 return EFI_SUCCESS;
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94 }
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