mirror of https://github.com/acidanthera/audk.git
ArmPkg/BdsLib: Move the code specific to the Atag preparation into a separate file
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@12409 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
oliviermartin
parent
76d17c3156
commit
d9325c8e4f
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@ -94,4 +94,13 @@ BdsLoadImage (
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OUT UINTN *FileSize
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);
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EFI_STATUS
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PrepareAtagList (
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IN CONST CHAR8* CommandLineString,
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IN EFI_PHYSICAL_ADDRESS InitrdImage,
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IN UINTN InitrdImageSize,
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OUT LINUX_ATAG **AtagBase,
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OUT UINT32 *AtagSize
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);
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#endif
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@ -21,11 +21,13 @@
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[Sources.common]
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BdsFilePath.c
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BdsLinuxLoader.c
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BdsAppLoader.c
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BdsHelper.c
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BdsLoadOption.c
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BdsLinuxLoader.c
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BdsLinuxAtag.c
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[Packages]
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MdePkg/MdePkg.dec
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EmbeddedPkg/EmbeddedPkg.dec
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@ -0,0 +1,163 @@
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/** @file
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*
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* Copyright (c) 2011, ARM Limited. All rights reserved.
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*
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* This program and the accompanying materials
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* are licensed and made available under the terms and conditions of the BSD License
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* which accompanies this distribution. The full text of the license may be found at
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* http://opensource.org/licenses/bsd-license.php
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*
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* THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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* WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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*
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**/
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#include "BdsInternal.h"
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// Point to the current ATAG
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STATIC LINUX_ATAG *mLinuxKernelCurrentAtag;
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STATIC
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VOID
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SetupCoreTag (
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IN UINT32 PageSize
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)
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{
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mLinuxKernelCurrentAtag->header.size = tag_size(LINUX_ATAG_CORE);
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mLinuxKernelCurrentAtag->header.type = ATAG_CORE;
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mLinuxKernelCurrentAtag->body.core_tag.flags = 1; /* ensure read-only */
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mLinuxKernelCurrentAtag->body.core_tag.pagesize = PageSize; /* systems PageSize (4k) */
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mLinuxKernelCurrentAtag->body.core_tag.rootdev = 0; /* zero root device (typically overridden from kernel command line )*/
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// move pointer to next tag
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mLinuxKernelCurrentAtag = next_tag_address(mLinuxKernelCurrentAtag);
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}
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STATIC
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VOID
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SetupMemTag (
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IN UINTN StartAddress,
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IN UINT32 Size
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)
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{
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mLinuxKernelCurrentAtag->header.size = tag_size(LINUX_ATAG_MEM);
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mLinuxKernelCurrentAtag->header.type = ATAG_MEM;
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mLinuxKernelCurrentAtag->body.mem_tag.start = StartAddress; /* Start of memory chunk for AtagMem */
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mLinuxKernelCurrentAtag->body.mem_tag.size = Size; /* Size of memory chunk for AtagMem */
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// move pointer to next tag
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mLinuxKernelCurrentAtag = next_tag_address(mLinuxKernelCurrentAtag);
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}
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STATIC
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VOID
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SetupCmdlineTag (
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IN CONST CHAR8 *CmdLine
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)
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{
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UINT32 LineLength;
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// Increment the line length by 1 to account for the null string terminator character
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LineLength = AsciiStrLen(CmdLine) + 1;
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/* Check for NULL strings.
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* Do not insert a tag for an empty CommandLine, don't even modify the tag address pointer.
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* Remember, you have at least one null string terminator character.
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*/
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if(LineLength > 1) {
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mLinuxKernelCurrentAtag->header.size = ((UINT32)sizeof(LINUX_ATAG_HEADER) + LineLength + (UINT32)3) >> 2;
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mLinuxKernelCurrentAtag->header.type = ATAG_CMDLINE;
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/* place CommandLine into tag */
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AsciiStrCpy(mLinuxKernelCurrentAtag->body.cmdline_tag.cmdline, CmdLine);
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// move pointer to next tag
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mLinuxKernelCurrentAtag = next_tag_address(mLinuxKernelCurrentAtag);
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}
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}
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STATIC
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VOID
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SetupEndTag (
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VOID
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)
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{
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// Empty tag ends list; this has zero length and no body
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mLinuxKernelCurrentAtag->header.type = ATAG_NONE;
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mLinuxKernelCurrentAtag->header.size = 0;
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/* We can not calculate the next address by using the standard macro:
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* Params = next_tag_address(Params);
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* because it relies on the header.size, which here it is 0 (zero).
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* The easiest way is to add the sizeof(mLinuxKernelCurrentAtag->header).
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*/
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mLinuxKernelCurrentAtag = (LINUX_ATAG*)((UINT32)mLinuxKernelCurrentAtag + sizeof(mLinuxKernelCurrentAtag->header));
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}
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EFI_STATUS
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PrepareAtagList (
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IN CONST CHAR8* CommandLineString,
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IN EFI_PHYSICAL_ADDRESS InitrdImage,
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IN UINTN InitrdImageSize,
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OUT LINUX_ATAG **AtagBase,
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OUT UINT32 *AtagSize
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)
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{
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EFI_STATUS Status;
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LIST_ENTRY *ResourceLink;
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LIST_ENTRY ResourceList;
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EFI_PHYSICAL_ADDRESS AtagStartAddress;
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BDS_SYSTEM_MEMORY_RESOURCE *Resource;
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AtagStartAddress = LINUX_ATAG_MAX_OFFSET;
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Status = gBS->AllocatePages (AllocateMaxAddress, EfiBootServicesData, EFI_SIZE_TO_PAGES(ATAG_MAX_SIZE), &AtagStartAddress);
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if (EFI_ERROR(Status)) {
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DEBUG ((EFI_D_ERROR,"Failed to allocate Atag at 0x%lX (%r)\n",AtagStartAddress,Status));
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Status = gBS->AllocatePages (AllocateAnyPages, EfiBootServicesData, EFI_SIZE_TO_PAGES(ATAG_MAX_SIZE), &AtagStartAddress);
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ASSERT_EFI_ERROR(Status);
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}
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// Ready to setup the atag list
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mLinuxKernelCurrentAtag = (LINUX_ATAG*)(UINTN)AtagStartAddress;
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// Standard core tag 4k PageSize
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SetupCoreTag( (UINT32)SIZE_4KB );
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// Physical memory setup
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GetSystemMemoryResources (&ResourceList);
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ResourceLink = ResourceList.ForwardLink;
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while (ResourceLink != NULL && ResourceLink != &ResourceList) {
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Resource = (BDS_SYSTEM_MEMORY_RESOURCE*)ResourceLink;
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DEBUG((EFI_D_INFO,"- [0x%08X,0x%08X]\n",(UINT32)Resource->PhysicalStart,(UINT32)Resource->PhysicalStart+(UINT32)Resource->ResourceLength));
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SetupMemTag( (UINT32)Resource->PhysicalStart, (UINT32)Resource->ResourceLength );
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ResourceLink = ResourceLink->ForwardLink;
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}
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// CommandLine setting root device
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if (CommandLineString) {
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SetupCmdlineTag (CommandLineString);
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}
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if (InitrdImageSize > 0 && InitrdImage != 0) {
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mLinuxKernelCurrentAtag->header.size = tag_size(LINUX_ATAG_INITRD2);
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mLinuxKernelCurrentAtag->header.type = ATAG_INITRD2;
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mLinuxKernelCurrentAtag->body.initrd2_tag.start = (UINT32)InitrdImage;
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mLinuxKernelCurrentAtag->body.initrd2_tag.size = (UINT32)InitrdImageSize;
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// Move pointer to next tag
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mLinuxKernelCurrentAtag = next_tag_address(mLinuxKernelCurrentAtag);
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}
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// End of tags
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SetupEndTag();
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// Calculate atag list size
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*AtagBase = (LINUX_ATAG*)(UINTN)AtagStartAddress;
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*AtagSize = (UINT32)mLinuxKernelCurrentAtag - (UINT32)AtagStartAddress + 1;
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return EFI_SUCCESS;
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}
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@ -16,152 +16,6 @@
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#define ALIGN32_BELOW(addr) ALIGN_POINTER(addr - 32,32)
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// Point to the current ATAG
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STATIC LINUX_ATAG *mLinuxKernelCurrentAtag;
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STATIC
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VOID
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SetupCoreTag (
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IN UINT32 PageSize
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)
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{
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mLinuxKernelCurrentAtag->header.size = tag_size(LINUX_ATAG_CORE);
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mLinuxKernelCurrentAtag->header.type = ATAG_CORE;
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mLinuxKernelCurrentAtag->body.core_tag.flags = 1; /* ensure read-only */
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mLinuxKernelCurrentAtag->body.core_tag.pagesize = PageSize; /* systems PageSize (4k) */
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mLinuxKernelCurrentAtag->body.core_tag.rootdev = 0; /* zero root device (typically overridden from kernel command line )*/
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// move pointer to next tag
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mLinuxKernelCurrentAtag = next_tag_address(mLinuxKernelCurrentAtag);
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}
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STATIC
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VOID
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SetupMemTag (
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IN UINTN StartAddress,
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IN UINT32 Size
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)
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{
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mLinuxKernelCurrentAtag->header.size = tag_size(LINUX_ATAG_MEM);
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mLinuxKernelCurrentAtag->header.type = ATAG_MEM;
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mLinuxKernelCurrentAtag->body.mem_tag.start = StartAddress; /* Start of memory chunk for AtagMem */
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mLinuxKernelCurrentAtag->body.mem_tag.size = Size; /* Size of memory chunk for AtagMem */
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// move pointer to next tag
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mLinuxKernelCurrentAtag = next_tag_address(mLinuxKernelCurrentAtag);
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}
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STATIC
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VOID
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SetupCmdlineTag (
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IN CONST CHAR8 *CmdLine
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)
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{
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UINT32 LineLength;
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// Increment the line length by 1 to account for the null string terminator character
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LineLength = AsciiStrLen(CmdLine) + 1;
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/* Check for NULL strings.
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* Do not insert a tag for an empty CommandLine, don't even modify the tag address pointer.
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* Remember, you have at least one null string terminator character.
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*/
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if(LineLength > 1) {
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mLinuxKernelCurrentAtag->header.size = ((UINT32)sizeof(LINUX_ATAG_HEADER) + LineLength + (UINT32)3) >> 2;
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mLinuxKernelCurrentAtag->header.type = ATAG_CMDLINE;
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/* place CommandLine into tag */
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AsciiStrCpy(mLinuxKernelCurrentAtag->body.cmdline_tag.cmdline, CmdLine);
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// move pointer to next tag
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mLinuxKernelCurrentAtag = next_tag_address(mLinuxKernelCurrentAtag);
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}
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}
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STATIC
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VOID
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SetupEndTag (
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VOID
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)
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{
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// Empty tag ends list; this has zero length and no body
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mLinuxKernelCurrentAtag->header.type = ATAG_NONE;
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mLinuxKernelCurrentAtag->header.size = 0;
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/* We can not calculate the next address by using the standard macro:
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* Params = next_tag_address(Params);
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* because it relies on the header.size, which here it is 0 (zero).
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* The easiest way is to add the sizeof(mLinuxKernelCurrentAtag->header).
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*/
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mLinuxKernelCurrentAtag = (LINUX_ATAG*)((UINT32)mLinuxKernelCurrentAtag + sizeof(mLinuxKernelCurrentAtag->header));
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}
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STATIC
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EFI_STATUS
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PrepareAtagList (
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IN CONST CHAR8* CommandLineString,
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IN EFI_PHYSICAL_ADDRESS InitrdImage,
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IN UINTN InitrdImageSize,
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OUT LINUX_ATAG **AtagBase,
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OUT UINT32 *AtagSize
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)
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{
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EFI_STATUS Status;
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LIST_ENTRY *ResourceLink;
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LIST_ENTRY ResourceList;
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EFI_PHYSICAL_ADDRESS AtagStartAddress;
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BDS_SYSTEM_MEMORY_RESOURCE *Resource;
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AtagStartAddress = LINUX_ATAG_MAX_OFFSET;
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Status = gBS->AllocatePages (AllocateMaxAddress, EfiBootServicesData, EFI_SIZE_TO_PAGES(ATAG_MAX_SIZE), &AtagStartAddress);
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if (EFI_ERROR(Status)) {
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DEBUG ((EFI_D_ERROR,"Failed to allocate Atag at 0x%lX (%r)\n",AtagStartAddress,Status));
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Status = gBS->AllocatePages (AllocateAnyPages, EfiBootServicesData, EFI_SIZE_TO_PAGES(ATAG_MAX_SIZE), &AtagStartAddress);
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ASSERT_EFI_ERROR(Status);
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}
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// Ready to setup the atag list
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mLinuxKernelCurrentAtag = (LINUX_ATAG*)(UINTN)AtagStartAddress;
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// Standard core tag 4k PageSize
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SetupCoreTag( (UINT32)SIZE_4KB );
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// Physical memory setup
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GetSystemMemoryResources (&ResourceList);
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ResourceLink = ResourceList.ForwardLink;
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while (ResourceLink != NULL && ResourceLink != &ResourceList) {
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Resource = (BDS_SYSTEM_MEMORY_RESOURCE*)ResourceLink;
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DEBUG((EFI_D_INFO,"- [0x%08X,0x%08X]\n",(UINT32)Resource->PhysicalStart,(UINT32)Resource->PhysicalStart+(UINT32)Resource->ResourceLength));
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SetupMemTag( (UINT32)Resource->PhysicalStart, (UINT32)Resource->ResourceLength );
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ResourceLink = ResourceLink->ForwardLink;
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}
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// CommandLine setting root device
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SetupCmdlineTag (CommandLineString);
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if (InitrdImageSize > 0 && InitrdImage != 0) {
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mLinuxKernelCurrentAtag->header.size = tag_size(LINUX_ATAG_INITRD2);
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mLinuxKernelCurrentAtag->header.type = ATAG_INITRD2;
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mLinuxKernelCurrentAtag->body.initrd2_tag.start = (UINT32)InitrdImage;
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mLinuxKernelCurrentAtag->body.initrd2_tag.size = (UINT32)InitrdImageSize;
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// Move pointer to next tag
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mLinuxKernelCurrentAtag = next_tag_address(mLinuxKernelCurrentAtag);
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}
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// end of tags
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SetupEndTag();
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// Calculate atag list size
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*AtagBase = (LINUX_ATAG*)(UINTN)AtagStartAddress;
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*AtagSize = (UINT32)mLinuxKernelCurrentAtag - (UINT32)AtagStartAddress + 1;
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return EFI_SUCCESS;
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}
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STATIC
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EFI_STATUS
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PreparePlatformHardware (
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