xt-sys/exectos
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Partially move global variables into classes
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This commit is contained in:
Aiken Harris
2025-09-20 20:16:55 +02:00
parent d0aeaf1109
commit 7791ca13e2
7 changed files with 336 additions and 298 deletions
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159
xtldr/xtldr.cc
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@@ -34,10 +34,11 @@ XtLoader::InitializeBootLoader()
/* Print XTLDR version */
Console::Print(L"XTLDR boot loader v%s\n", XTOS_VERSION);
/* Initialize XTLDR configuration linked lists */
RTL::LinkedList::InitializeListHead(&BlpBootProtocols);
RTL::LinkedList::InitializeListHead(&BlpConfig);
RTL::LinkedList::InitializeListHead(&BlpLoadedModules);
/* Initialize XTLDR protocol */
Protocol::InitializeProtocol();
/* Initialize XTLDR configuration */
Configuration::InitializeConfiguration();
/* Store SecureBoot status */
BlpStatus.SecureBoot = EfiUtils::GetSecureBootStatus();
@@ -74,156 +75,6 @@ XtLoader::InitializeBootLoader()
}
}
/**
* Initializes a list of operating systems for XTLDR boot menu.
*
* @param MenuEntries
* Supplies a pointer to memory area where operating systems list will be stored.
*
* @param EntriesCount
* Supplies a pointer to memory area where number of menu entries will be stored.
*
* @param DefaultId
* Supplies a pointer to memory area where ID of default menu entry will be stored.
*
* @return This routine does not return any value.
*
* @since XT 1.0
*/
XTCDECL
EFI_STATUS
XtLoader::InitializeBootMenuList(IN ULONG MaxNameLength,
OUT PXTBL_BOOTMENU_ITEM *MenuEntries,
OUT PULONG EntriesCount,
OUT PULONG DefaultId)
{
EFI_GUID VendorGuid = XT_BOOT_LOADER_PROTOCOL_GUID;
PWCHAR DefaultMenuEntry, LastBooted, MenuEntryName, VisibleName;
PLIST_ENTRY MenuEntrySectionList, MenuEntryList;
PXTBL_CONFIG_SECTION MenuEntrySection;
PXTBL_CONFIG_ENTRY MenuEntryOption;
ULONG DefaultOS, NameLength,NumberOfEntries;
PXTBL_BOOTMENU_ITEM OsList;
EFI_STATUS Status;
/* Set default values */
DefaultOS = 0;
NumberOfEntries = 0;
/* Get default menu entry from configuration */
Configuration::GetValue(L"DEFAULT", &DefaultMenuEntry);
/* Check if configuration allows to use last booted OS */
if(Configuration::GetBooleanValue(L"KEEPLASTBOOT"))
{
/* Attempt to get last booted Operating System from NVRAM */
Status = EfiUtils::GetEfiVariable(&VendorGuid, L"XtLdrLastBootOS", (PVOID*)&LastBooted);
if(Status == STATUS_EFI_SUCCESS)
{
/* Set default menu entry to last booted OS */
DefaultMenuEntry = LastBooted;
}
}
/* Iterate through menu items to get a total number of entries */
MenuEntrySectionList = BlpMenuList->Flink;
while(MenuEntrySectionList != BlpMenuList)
{
/* Increase number of menu entries, and simply get next item */
NumberOfEntries++;
MenuEntrySectionList = MenuEntrySectionList->Flink;
}
/* Allocate memory for the OS list depending on the item count */
Status = Memory::AllocatePool(NumberOfEntries * sizeof(XTBL_BOOTMENU_ITEM), (PVOID*)&OsList);
if(Status != STATUS_EFI_SUCCESS || !OsList)
{
/* Memory allocation failure */
return STATUS_EFI_OUT_OF_RESOURCES;
}
/* Reset counter and iterate through all menu items once again */
NumberOfEntries = 0;
MenuEntrySectionList = BlpMenuList->Flink;
while(MenuEntrySectionList != BlpMenuList)
{
/* NULLify menu entry name */
MenuEntryName = NULLPTR;
/* Get menu section */
MenuEntrySection = CONTAIN_RECORD(MenuEntrySectionList, XTBL_CONFIG_SECTION, Flink);
/* Check if this is the default menu entry */
if((RTL::WideString::WideStringLength(MenuEntrySection->SectionName, 0) == RTL::WideString::WideStringLength(DefaultMenuEntry, 0)) &&
(RTL::WideString::CompareWideStringInsensitive(MenuEntrySection->SectionName, DefaultMenuEntry, 0) == 0))
{
/* Set default OS ID */
DefaultOS = NumberOfEntries;
}
/* Iterate through all entry parameters */
MenuEntryList = MenuEntrySection->Options.Flink;
while(MenuEntryList != &MenuEntrySection->Options)
{
/* Get menu entry parameter */
MenuEntryOption = CONTAIN_RECORD(MenuEntryList, XTBL_CONFIG_ENTRY, Flink);
/* Check if this is the menu entry display name */
if(RTL::WideString::CompareWideStringInsensitive(MenuEntryOption->Name, L"SYSTEMNAME", 0) == 0)
{
/* Set menu entry display name */
MenuEntryName = MenuEntryOption->Value;
}
/* Get next parameter for this menu entry */
MenuEntryList = MenuEntryList->Flink;
}
/* Add OS to the boot menu list */
OsList[NumberOfEntries].FullName = MenuEntryName;
OsList[NumberOfEntries].ShortName = MenuEntrySection->SectionName;
OsList[NumberOfEntries].Options = &MenuEntrySection->Options;
/* Check if the menu entry name fits the maximum length */
NameLength = RTL::WideString::WideStringLength(MenuEntryName, 0);
if(NameLength > MaxNameLength)
{
/* Menu entry name is too long, allocate memory for shorter name visible in the boot menu */
Status = Memory::AllocatePool((MaxNameLength + 1) * sizeof(WCHAR), (PVOID*)&VisibleName);
if(Status != STATUS_EFI_SUCCESS)
{
/* Memory allocation failure */
return STATUS_EFI_OUT_OF_RESOURCES;
}
/* Copy shorter name and append "..." at the end */
RTL::Memory::CopyMemory(VisibleName, MenuEntryName, (MaxNameLength - 3) * sizeof(WCHAR));
RTL::Memory::CopyMemory(VisibleName + MaxNameLength - 3, L"...", 3 * sizeof(WCHAR));
VisibleName[MaxNameLength] = L'\0';
/* Set visible menu entry name */
OsList[NumberOfEntries].EntryName = VisibleName;
}
else
{
/* Menu entry name fits the maximum length, use it as is */
OsList[NumberOfEntries].EntryName = MenuEntryName;
}
/* Get next menu entry */
MenuEntrySectionList = MenuEntrySectionList->Flink;
NumberOfEntries++;
}
/* Set return values */
*DefaultId = DefaultOS;
*EntriesCount = NumberOfEntries;
*MenuEntries = OsList;
/* Return success */
return STATUS_EFI_SUCCESS;
}
/**
* This routine is the entry point of the XT EFI boot loader.
*