-/** @file
-*
-* Copyright (c) 2011, ARM Limited. All rights reserved.
-*
-* This program and the accompanying materials
-* are licensed and made available under the terms and conditions of the BSD License
-* which accompanies this distribution. The full text of the license may be found at
-* http://opensource.org/licenses/bsd-license.php
-*
-* THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
-* WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
-*
-**/
-
-#include "BdsInternal.h"
-
-// Point to the current ATAG
-STATIC LINUX_ATAG *mLinuxKernelCurrentAtag;
-
-STATIC
-VOID
-SetupCoreTag (
- IN UINT32 PageSize
- )
-{
- mLinuxKernelCurrentAtag->header.size = tag_size(LINUX_ATAG_CORE);
- mLinuxKernelCurrentAtag->header.type = ATAG_CORE;
-
- mLinuxKernelCurrentAtag->body.core_tag.flags = 1; /* ensure read-only */
- mLinuxKernelCurrentAtag->body.core_tag.pagesize = PageSize; /* systems PageSize (4k) */
- mLinuxKernelCurrentAtag->body.core_tag.rootdev = 0; /* zero root device (typically overridden from kernel command line )*/
-
- // move pointer to next tag
- mLinuxKernelCurrentAtag = next_tag_address(mLinuxKernelCurrentAtag);
-}
-
-STATIC
-VOID
-SetupMemTag (
- IN UINTN StartAddress,
- IN UINT32 Size
- )
-{
- mLinuxKernelCurrentAtag->header.size = tag_size(LINUX_ATAG_MEM);
- mLinuxKernelCurrentAtag->header.type = ATAG_MEM;
-
- mLinuxKernelCurrentAtag->body.mem_tag.start = StartAddress; /* Start of memory chunk for AtagMem */
- mLinuxKernelCurrentAtag->body.mem_tag.size = Size; /* Size of memory chunk for AtagMem */
-
- // move pointer to next tag
- mLinuxKernelCurrentAtag = next_tag_address(mLinuxKernelCurrentAtag);
-}
-
-STATIC
-VOID
-SetupCmdlineTag (
- IN CONST CHAR8 *CmdLine
- )
-{
- UINT32 LineLength;
-
- // Increment the line length by 1 to account for the null string terminator character
- LineLength = AsciiStrLen(CmdLine) + 1;
-
- /* Check for NULL strings.
- * Do not insert a tag for an empty CommandLine, don't even modify the tag address pointer.
- * Remember, you have at least one null string terminator character.
- */
- if(LineLength > 1) {
- mLinuxKernelCurrentAtag->header.size = ((UINT32)sizeof(LINUX_ATAG_HEADER) + LineLength + (UINT32)3) >> 2;
- mLinuxKernelCurrentAtag->header.type = ATAG_CMDLINE;
-
- /* place CommandLine into tag */
- AsciiStrCpy(mLinuxKernelCurrentAtag->body.cmdline_tag.cmdline, CmdLine);
-
- // move pointer to next tag
- mLinuxKernelCurrentAtag = next_tag_address(mLinuxKernelCurrentAtag);
- }
-}
-
-STATIC
-VOID
-SetupEndTag (
- VOID
- )
-{
- // Empty tag ends list; this has zero length and no body
- mLinuxKernelCurrentAtag->header.type = ATAG_NONE;
- mLinuxKernelCurrentAtag->header.size = 0;
-
- /* We can not calculate the next address by using the standard macro:
- * Params = next_tag_address(Params);
- * because it relies on the header.size, which here it is 0 (zero).
- * The easiest way is to add the sizeof(mLinuxKernelCurrentAtag->header).
- */
- mLinuxKernelCurrentAtag = (LINUX_ATAG*)((UINT32)mLinuxKernelCurrentAtag + sizeof(mLinuxKernelCurrentAtag->header));
-}
-
-EFI_STATUS
-PrepareAtagList (
- IN CONST CHAR8* CommandLineString,
- IN EFI_PHYSICAL_ADDRESS InitrdImage,
- IN UINTN InitrdImageSize,
- OUT LINUX_ATAG **AtagBase,
- OUT UINT32 *AtagSize
- )
-{
- EFI_STATUS Status;
- LIST_ENTRY *ResourceLink;
- LIST_ENTRY ResourceList;
- EFI_PHYSICAL_ADDRESS AtagStartAddress;
- BDS_SYSTEM_MEMORY_RESOURCE *Resource;
-
- AtagStartAddress = LINUX_ATAG_MAX_OFFSET;
- Status = gBS->AllocatePages (AllocateMaxAddress, EfiBootServicesData, EFI_SIZE_TO_PAGES(ATAG_MAX_SIZE), &AtagStartAddress);
- if (EFI_ERROR(Status)) {
- DEBUG ((EFI_D_ERROR,"Failed to allocate Atag at 0x%lX (%r)\n",AtagStartAddress,Status));
- Status = gBS->AllocatePages (AllocateAnyPages, EfiBootServicesData, EFI_SIZE_TO_PAGES(ATAG_MAX_SIZE), &AtagStartAddress);
- ASSERT_EFI_ERROR(Status);
- }
-
- // Ready to setup the atag list
- mLinuxKernelCurrentAtag = (LINUX_ATAG*)(UINTN)AtagStartAddress;
-
- // Standard core tag 4k PageSize
- SetupCoreTag( (UINT32)SIZE_4KB );
-
- // Physical memory setup
- GetSystemMemoryResources (&ResourceList);
- ResourceLink = ResourceList.ForwardLink;
- while (ResourceLink != NULL && ResourceLink != &ResourceList) {
- Resource = (BDS_SYSTEM_MEMORY_RESOURCE*)ResourceLink;
- DEBUG((EFI_D_INFO,"- [0x%08X,0x%08X]\n",(UINT32)Resource->PhysicalStart,(UINT32)Resource->PhysicalStart+(UINT32)Resource->ResourceLength));
- SetupMemTag( (UINT32)Resource->PhysicalStart, (UINT32)Resource->ResourceLength );
- ResourceLink = ResourceLink->ForwardLink;
- }
-
- // CommandLine setting root device
- if (CommandLineString) {
- SetupCmdlineTag (CommandLineString);
- }
-
- if (InitrdImageSize > 0 && InitrdImage != 0) {
- mLinuxKernelCurrentAtag->header.size = tag_size(LINUX_ATAG_INITRD2);
- mLinuxKernelCurrentAtag->header.type = ATAG_INITRD2;
-
- mLinuxKernelCurrentAtag->body.initrd2_tag.start = (UINT32)InitrdImage;
- mLinuxKernelCurrentAtag->body.initrd2_tag.size = (UINT32)InitrdImageSize;
-
- // Move pointer to next tag
- mLinuxKernelCurrentAtag = next_tag_address(mLinuxKernelCurrentAtag);
- }
-
- // End of tags
- SetupEndTag();
-
- // Calculate atag list size
- *AtagBase = (LINUX_ATAG*)(UINTN)AtagStartAddress;
- *AtagSize = (UINT32)mLinuxKernelCurrentAtag - (UINT32)AtagStartAddress + 1;
-
- return EFI_SUCCESS;
-}
-
+/** @file\r
+*\r
+* Copyright (c) 2011-2012, ARM Limited. All rights reserved.\r
+* \r
+* This program and the accompanying materials \r
+* are licensed and made available under the terms and conditions of the BSD License \r
+* which accompanies this distribution. The full text of the license may be found at \r
+* http://opensource.org/licenses/bsd-license.php \r
+*\r
+* THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, \r
+* WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. \r
+*\r
+**/\r
+\r
+#include "BdsInternal.h"\r
+#include "BdsLinuxLoader.h"\r
+\r
+// Point to the current ATAG\r
+STATIC LINUX_ATAG *mLinuxKernelCurrentAtag;\r
+\r
+STATIC\r
+VOID\r
+SetupCoreTag (\r
+ IN UINT32 PageSize\r
+ )\r
+{\r
+ mLinuxKernelCurrentAtag->header.size = tag_size(LINUX_ATAG_CORE);\r
+ mLinuxKernelCurrentAtag->header.type = ATAG_CORE;\r
+\r
+ mLinuxKernelCurrentAtag->body.core_tag.flags = 1; /* ensure read-only */\r
+ mLinuxKernelCurrentAtag->body.core_tag.pagesize = PageSize; /* systems PageSize (4k) */\r
+ mLinuxKernelCurrentAtag->body.core_tag.rootdev = 0; /* zero root device (typically overridden from kernel command line )*/\r
+\r
+ // move pointer to next tag\r
+ mLinuxKernelCurrentAtag = next_tag_address(mLinuxKernelCurrentAtag);\r
+}\r
+\r
+STATIC\r
+VOID\r
+SetupMemTag (\r
+ IN UINTN StartAddress,\r
+ IN UINT32 Size\r
+ )\r
+{\r
+ mLinuxKernelCurrentAtag->header.size = tag_size(LINUX_ATAG_MEM);\r
+ mLinuxKernelCurrentAtag->header.type = ATAG_MEM;\r
+\r
+ mLinuxKernelCurrentAtag->body.mem_tag.start = StartAddress; /* Start of memory chunk for AtagMem */\r
+ mLinuxKernelCurrentAtag->body.mem_tag.size = Size; /* Size of memory chunk for AtagMem */\r
+\r
+ // move pointer to next tag\r
+ mLinuxKernelCurrentAtag = next_tag_address(mLinuxKernelCurrentAtag);\r
+}\r
+\r
+STATIC\r
+VOID\r
+SetupCmdlineTag (\r
+ IN CONST CHAR8 *CmdLine\r
+ )\r
+{\r
+ UINT32 LineLength;\r
+\r
+ // Increment the line length by 1 to account for the null string terminator character\r
+ LineLength = AsciiStrLen(CmdLine) + 1;\r
+\r
+ /* Check for NULL strings.\r
+ * Do not insert a tag for an empty CommandLine, don't even modify the tag address pointer.\r
+ * Remember, you have at least one null string terminator character.\r
+ */\r
+ if(LineLength > 1) {\r
+ mLinuxKernelCurrentAtag->header.size = ((UINT32)sizeof(LINUX_ATAG_HEADER) + LineLength + (UINT32)3) >> 2;\r
+ mLinuxKernelCurrentAtag->header.type = ATAG_CMDLINE;\r
+\r
+ /* place CommandLine into tag */\r
+ AsciiStrCpy(mLinuxKernelCurrentAtag->body.cmdline_tag.cmdline, CmdLine);\r
+\r
+ // move pointer to next tag\r
+ mLinuxKernelCurrentAtag = next_tag_address(mLinuxKernelCurrentAtag);\r
+ }\r
+}\r
+\r
+STATIC\r
+VOID\r
+SetupInitrdTag (\r
+ IN UINT32 InitrdImage,\r
+ IN UINT32 InitrdImageSize\r
+ )\r
+{\r
+ mLinuxKernelCurrentAtag->header.size = tag_size(LINUX_ATAG_INITRD2);\r
+ mLinuxKernelCurrentAtag->header.type = ATAG_INITRD2;\r
+\r
+ mLinuxKernelCurrentAtag->body.initrd2_tag.start = InitrdImage;\r
+ mLinuxKernelCurrentAtag->body.initrd2_tag.size = InitrdImageSize;\r
+\r
+ // Move pointer to next tag\r
+ mLinuxKernelCurrentAtag = next_tag_address(mLinuxKernelCurrentAtag);\r
+}\r
+STATIC\r
+VOID\r
+SetupEndTag (\r
+ VOID\r
+ )\r
+{\r
+ // Empty tag ends list; this has zero length and no body\r
+ mLinuxKernelCurrentAtag->header.type = ATAG_NONE;\r
+ mLinuxKernelCurrentAtag->header.size = 0;\r
+\r
+ /* We can not calculate the next address by using the standard macro:\r
+ * Params = next_tag_address(Params);\r
+ * because it relies on the header.size, which here it is 0 (zero).\r
+ * The easiest way is to add the sizeof(mLinuxKernelCurrentAtag->header).\r
+ */\r
+ mLinuxKernelCurrentAtag = (LINUX_ATAG*)((UINT32)mLinuxKernelCurrentAtag + sizeof(mLinuxKernelCurrentAtag->header));\r
+}\r
+\r
+EFI_STATUS\r
+PrepareAtagList (\r
+ IN CONST CHAR8* CommandLineString,\r
+ IN EFI_PHYSICAL_ADDRESS InitrdImage,\r
+ IN UINTN InitrdImageSize,\r
+ OUT EFI_PHYSICAL_ADDRESS *AtagBase,\r
+ OUT UINT32 *AtagSize\r
+ )\r
+{\r
+ EFI_STATUS Status;\r
+ LIST_ENTRY *ResourceLink;\r
+ LIST_ENTRY ResourceList;\r
+ EFI_PHYSICAL_ADDRESS AtagStartAddress;\r
+ BDS_SYSTEM_MEMORY_RESOURCE *Resource;\r
+\r
+ AtagStartAddress = LINUX_ATAG_MAX_OFFSET;\r
+ Status = gBS->AllocatePages (AllocateMaxAddress, EfiBootServicesData, EFI_SIZE_TO_PAGES(ATAG_MAX_SIZE), &AtagStartAddress);\r
+ if (EFI_ERROR(Status)) {\r
+ DEBUG ((EFI_D_WARN, "Warning: Failed to allocate Atag at 0x%lX (%r). The Atag will be allocated somewhere else in System Memory.\n", AtagStartAddress, Status));\r
+ Status = gBS->AllocatePages (AllocateAnyPages, EfiBootServicesData, EFI_SIZE_TO_PAGES(ATAG_MAX_SIZE), &AtagStartAddress);\r
+ ASSERT_EFI_ERROR(Status);\r
+ }\r
+\r
+ // Ready to setup the atag list\r
+ mLinuxKernelCurrentAtag = (LINUX_ATAG*)(UINTN)AtagStartAddress;\r
+\r
+ // Standard core tag 4k PageSize\r
+ SetupCoreTag( (UINT32)SIZE_4KB );\r
+\r
+ // Physical memory setup\r
+ GetSystemMemoryResources (&ResourceList);\r
+ ResourceLink = ResourceList.ForwardLink;\r
+ while (ResourceLink != NULL && ResourceLink != &ResourceList) {\r
+ Resource = (BDS_SYSTEM_MEMORY_RESOURCE*)ResourceLink;\r
+ DEBUG((EFI_D_INFO,"- [0x%08X,0x%08X]\n",(UINT32)Resource->PhysicalStart,(UINT32)Resource->PhysicalStart+(UINT32)Resource->ResourceLength));\r
+ SetupMemTag( (UINT32)Resource->PhysicalStart, (UINT32)Resource->ResourceLength );\r
+ ResourceLink = ResourceLink->ForwardLink;\r
+ }\r
+\r
+ // CommandLine setting root device\r
+ if (CommandLineString) {\r
+ SetupCmdlineTag (CommandLineString);\r
+ }\r
+\r
+ if (InitrdImageSize > 0 && InitrdImage != 0) {\r
+ SetupInitrdTag ((UINT32)InitrdImage, (UINT32)InitrdImageSize);\r
+ }\r
+\r
+ // End of tags\r
+ SetupEndTag();\r
+\r
+ // Calculate atag list size\r
+ *AtagBase = AtagStartAddress;\r
+ *AtagSize = (UINT32)mLinuxKernelCurrentAtag - (UINT32)AtagStartAddress + 1;\r
+\r
+ return EFI_SUCCESS;\r
+}\r
+\r
projects / mirror_edk2.git / blobdiff