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EmbeddedPkg/FdtPlatformDxe: Introduce EFI Shell command 'dumfdt'

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This command dumps the Flat Device Tree currently installed
in the EFI Configuration Table.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Olivier Martin <olivier.martin@arm.com>
Reviewed-by: Ronald Cron <Ronald.Cron@arm.com>



git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@17303 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
Olivier Martin
2015-05-05 15:31:11 +00:00
committed by oliviermartin
parent 3d7f106085
commit b0866ad398
5 changed files with 375 additions and 11 deletions
Download Patch File Download Diff File Expand all files Collapse all files

58
EmbeddedPkg/Drivers/FdtPlatformDxe/FdtPlatform.c
View File

@@ -20,8 +20,6 @@
#include <Protocol/DevicePath.h>
#include <libfdt.h>
//
// Internal variables
//
@@ -32,6 +30,12 @@ STATIC CONST EFI_SHELL_DYNAMIC_COMMAND_PROTOCOL mShellDynCmdProtocolSetFdt = {
ShellDynCmdSetFdtGetHelp // GetHelp
};
STATIC CONST EFI_SHELL_DYNAMIC_COMMAND_PROTOCOL mShellDynCmdProtocolDumpFdt = {
L"dumpfdt", // Name of the command
ShellDynCmdDumpFdtHandler, // Handler
ShellDynCmdDumpFdtGetHelp // GetHelp
};
STATIC CONST EFI_GUID mFdtPlatformDxeHiiGuid = {
0x8afa7610, 0x62b1, 0x46aa,
{0xb5, 0x34, 0xc3, 0xde, 0xff, 0x39, 0x77, 0x8c}
@@ -159,6 +163,7 @@ FdtPlatformEntryPoint (
)
{
EFI_STATUS Status;
EFI_HANDLE Handle;
//
// Install the Device Tree from its expected location
@@ -168,14 +173,7 @@ FdtPlatformEntryPoint (
return Status;
}
//
// If the development features are enabled, install the dynamic shell
// command "setfdt" to be able to define a device path for the FDT
// that has precedence over the device paths defined by
// "PcdFdtDevicePaths".
//
if (FeaturePcdGet (PcdOverridePlatformFdt)) {
if (FeaturePcdGet (PcdOverridePlatformFdt) || FeaturePcdGet (PcdDumpFdtShellCommand)) {
//
// Register the strings for the user interface in the HII Database.
// This shows the way to the multi-language support, even if
@@ -192,10 +190,22 @@ FdtPlatformEntryPoint (
FdtPlatformDxeStrings,
NULL
);
}
//
// If the development features are enabled, install the dynamic shell
// command "setfdt" to be able to define a device path for the FDT
// that has precedence over the device paths defined by
// "PcdFdtDevicePaths".
//
if (FeaturePcdGet (PcdOverridePlatformFdt)) {
if (mFdtPlatformDxeHiiHandle != NULL) {
// We install dynamic EFI command on separate handles as we cannot register
// more than one protocol of the same protocol interface on the same handle.
Handle = NULL;
Status = gBS->InstallMultipleProtocolInterfaces (
&ImageHandle,
&Handle,
&gEfiShellDynamicCommandProtocolGuid,
&mShellDynCmdProtocolSetFdt,
NULL
@@ -215,6 +225,32 @@ FdtPlatformEntryPoint (
}
}
if (FeaturePcdGet (PcdDumpFdtShellCommand)) {
if (mFdtPlatformDxeHiiHandle != NULL) {
// We install dynamic EFI command on separate handles as we cannot register
// more than one protocol of the same protocol interface on the same handle.
Handle = NULL;
Status = gBS->InstallMultipleProtocolInterfaces (
&Handle,
&gEfiShellDynamicCommandProtocolGuid,
&mShellDynCmdProtocolDumpFdt,
NULL
);
if (EFI_ERROR (Status)) {
HiiRemovePackages (mFdtPlatformDxeHiiHandle);
}
} else {
Status = EFI_LOAD_ERROR;
}
if (EFI_ERROR (Status)) {
DEBUG ((
EFI_D_WARN,
"Unable to install \"dumpfdt\" EFI Shell command - %r \n",
Status
));
}
}
return Status;
}