}\r
}\r
\r
-/**\r
- Iterate over the RAM entries in QEMU's fw_cfg E820 RAM map that start outside\r
- of the 32-bit address range.\r
-\r
- Find the highest exclusive >=4GB RAM address, or produce memory resource\r
- descriptor HOBs for RAM entries that start at or above 4GB.\r
-\r
- @param[out] MaxAddress If MaxAddress is NULL, then PlatformScanOrAdd64BitE820Ram()\r
- produces memory resource descriptor HOBs for RAM\r
- entries that start at or above 4GB.\r
-\r
- Otherwise, MaxAddress holds the highest exclusive\r
- >=4GB RAM address on output. If QEMU's fw_cfg E820\r
- RAM map contains no RAM entry that starts outside of\r
- the 32-bit address range, then MaxAddress is exactly\r
- 4GB on output.\r
-\r
- @retval EFI_SUCCESS The fw_cfg E820 RAM map was found and processed.\r
-\r
- @retval EFI_PROTOCOL_ERROR The RAM map was found, but its size wasn't a\r
- whole multiple of sizeof(EFI_E820_ENTRY64). No\r
- RAM entry was processed.\r
-\r
- @return Error codes from QemuFwCfgFindFile(). No RAM\r
- entry was processed.\r
-**/\r
-STATIC\r
-EFI_STATUS\r
-PlatformScanOrAdd64BitE820Ram (\r
- IN BOOLEAN AddHighHob,\r
- OUT UINT64 *LowMemory OPTIONAL,\r
- OUT UINT64 *MaxAddress OPTIONAL\r
- )\r
-{\r
- EFI_STATUS Status;\r
- FIRMWARE_CONFIG_ITEM FwCfgItem;\r
- UINTN FwCfgSize;\r
- EFI_E820_ENTRY64 E820Entry;\r
- UINTN Processed;\r
-\r
- Status = QemuFwCfgFindFile ("etc/e820", &FwCfgItem, &FwCfgSize);\r
- if (EFI_ERROR (Status)) {\r
- return Status;\r
- }\r
-\r
- if (FwCfgSize % sizeof E820Entry != 0) {\r
- return EFI_PROTOCOL_ERROR;\r
- }\r
-\r
- if (LowMemory != NULL) {\r
- *LowMemory = 0;\r
- }\r
-\r
- if (MaxAddress != NULL) {\r
- *MaxAddress = BASE_4GB;\r
- }\r
-\r
- QemuFwCfgSelectItem (FwCfgItem);\r
- for (Processed = 0; Processed < FwCfgSize; Processed += sizeof E820Entry) {\r
- QemuFwCfgReadBytes (sizeof E820Entry, &E820Entry);\r
- DEBUG ((\r
- DEBUG_VERBOSE,\r
- "%a: Base=0x%Lx Length=0x%Lx Type=%u\n",\r
- __FUNCTION__,\r
- E820Entry.BaseAddr,\r
- E820Entry.Length,\r
- E820Entry.Type\r
- ));\r
- if (E820Entry.Type == EfiAcpiAddressRangeMemory) {\r
- if (AddHighHob && (E820Entry.BaseAddr >= BASE_4GB)) {\r
- UINT64 Base;\r
- UINT64 End;\r
-\r
- //\r
- // Round up the start address, and round down the end address.\r
- //\r
- Base = ALIGN_VALUE (E820Entry.BaseAddr, (UINT64)EFI_PAGE_SIZE);\r
- End = (E820Entry.BaseAddr + E820Entry.Length) &\r
- ~(UINT64)EFI_PAGE_MASK;\r
- if (Base < End) {\r
- PlatformAddMemoryRangeHob (Base, End);\r
- DEBUG ((\r
- DEBUG_VERBOSE,\r
- "%a: PlatformAddMemoryRangeHob [0x%Lx, 0x%Lx)\n",\r
- __FUNCTION__,\r
- Base,\r
- End\r
- ));\r
- }\r
- }\r
-\r
- if (MaxAddress || LowMemory) {\r
- UINT64 Candidate;\r
-\r
- Candidate = E820Entry.BaseAddr + E820Entry.Length;\r
- if (MaxAddress && (Candidate > *MaxAddress)) {\r
- *MaxAddress = Candidate;\r
- DEBUG ((\r
- DEBUG_VERBOSE,\r
- "%a: MaxAddress=0x%Lx\n",\r
- __FUNCTION__,\r
- *MaxAddress\r
- ));\r
- }\r
-\r
- if (LowMemory && (Candidate > *LowMemory) && (Candidate < BASE_4GB)) {\r
- *LowMemory = Candidate;\r
- DEBUG ((\r
- DEBUG_VERBOSE,\r
- "%a: LowMemory=0x%Lx\n",\r
- __FUNCTION__,\r
- *LowMemory\r
- ));\r
- }\r
- }\r
- } else if (E820Entry.Type == EfiAcpiAddressRangeReserved) {\r
- if (AddHighHob) {\r
- DEBUG ((\r
- DEBUG_INFO,\r
- "%a: Reserved: Base=0x%Lx Length=0x%Lx\n",\r
- __FUNCTION__,\r
- E820Entry.BaseAddr,\r
- E820Entry.Length\r
- ));\r
- BuildResourceDescriptorHob (\r
- EFI_RESOURCE_MEMORY_RESERVED,\r
- 0,\r
- E820Entry.BaseAddr,\r
- E820Entry.Length\r
- );\r
- }\r
- }\r
- }\r
-\r
- return EFI_SUCCESS;\r
-}\r
-\r
typedef VOID (*E820_SCAN_CALLBACK) (\r
EFI_E820_ENTRY64 *E820Entry,\r
EFI_HOB_PLATFORM_INFO *PlatformInfoHob\r
}\r
}\r
\r
+/**\r
+ Create HOBs for reservations and RAM (except low memory).\r
+**/\r
+STATIC\r
+VOID\r
+PlatformAddHobCB (\r
+ IN EFI_E820_ENTRY64 *E820Entry,\r
+ IN OUT EFI_HOB_PLATFORM_INFO *PlatformInfoHob\r
+ )\r
+{\r
+ UINT64 Base, End;\r
+\r
+ Base = E820Entry->BaseAddr;\r
+ End = E820Entry->BaseAddr + E820Entry->Length;\r
+\r
+ switch (E820Entry->Type) {\r
+ case EfiAcpiAddressRangeMemory:\r
+ if (Base >= BASE_4GB) {\r
+ //\r
+ // Round up the start address, and round down the end address.\r
+ //\r
+ Base = ALIGN_VALUE (Base, (UINT64)EFI_PAGE_SIZE);\r
+ End = End & ~(UINT64)EFI_PAGE_MASK;\r
+ if (Base < End) {\r
+ DEBUG ((DEBUG_INFO, "%a: HighMemory [0x%Lx, 0x%Lx)\n", __FUNCTION__, Base, End));\r
+ PlatformAddMemoryRangeHob (Base, End);\r
+ }\r
+ }\r
+\r
+ break;\r
+ case EfiAcpiAddressRangeReserved:\r
+ BuildResourceDescriptorHob (EFI_RESOURCE_MEMORY_RESERVED, 0, Base, End);\r
+ DEBUG ((DEBUG_INFO, "%a: Reserved [0x%Lx, 0x%Lx)\n", __FUNCTION__, Base, End));\r
+ break;\r
+ default:\r
+ DEBUG ((\r
+ DEBUG_WARN,\r
+ "%a: Type %u [0x%Lx, 0x%Lx) (NOT HANDLED)\n",\r
+ __FUNCTION__,\r
+ E820Entry->Type,\r
+ Base,\r
+ End\r
+ ));\r
+ break;\r
+ }\r
+}\r
+\r
/**\r
Iterate over the entries in QEMU's fw_cfg E820 RAM map, call the\r
passed callback for each entry.\r
// entries. Otherwise, create a single memory HOB with the flat >=4GB\r
// memory size read from the CMOS.\r
//\r
- Status = PlatformScanOrAdd64BitE820Ram (TRUE, NULL, NULL);\r
+ Status = PlatformScanE820 (PlatformAddHobCB, PlatformInfoHob);\r
if (EFI_ERROR (Status)) {\r
UpperMemorySize = PlatformGetSystemMemorySizeAbove4gb ();\r
if (UpperMemorySize != 0) {\r
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