sravan/system76-edk2
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

NetworkPkg: Add RAM disk boot support to HTTP Boot driver.

Browse Source 
This patch updates the HTTP Boot driver to support the download and boot
a RAM disk image from HTTP server.
The HTTP RAM disk boot is described in section 23.7 "HTTP Boot" in
UEFI 2.6. HTTP server could provide either an UEFI image or a RAM disk image
for the HTTP boot client to use. The RAM disk image must contain a UEFI
compliant file system in it.
HTTP boot driver will identify the image type either by the "Content-Type"
entity header filed or by the file name extension as below:
  "application/efi" or *.efi -> EFI Image
  *.iso                      -> CD/DVD Image
  *.img                      -> Virtual Disk Image

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Fu Siyuan <siyuan.fu@intel.com>
Reviewed-by: Ye Ting <ting.ye@intel.com>
Reviewed-by: El-Haj-Mahmoud Samer <samer.el-haj-mahmoud@hpe.com>
This commit is contained in:
Fu Siyuan
2016-03-22 13:30:58 +08:00
parent 64ee6ed72a
commit 587d204ccd
7 changed files with 334 additions and 55 deletions
Download Patch File Download Diff File Expand all files Collapse all files

136
NetworkPkg/HttpBootDxe/HttpBootImpl.c
View File

@@ -17,6 +17,9 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
/**
Enable the use of UEFI HTTP boot function.
If the driver has already been started but not satisfy the requirement (IP stack and
specified boot file path), this function will stop the driver and start it again.
@param[in] Private The pointer to the driver's private data.
@param[in] UsingIpv6 Specifies the type of IP addresses that are to be
used during the session that is being started.
@@ -24,7 +27,8 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
@param[in] FilePath The device specific path of the file to load.
@retval EFI_SUCCESS HTTP boot was successfully enabled.
@retval EFI_INVALID_PARAMETER Private is NULL.
@retval EFI_INVALID_PARAMETER Private is NULL or FilePath is NULL.
@retval EFI_INVALID_PARAMETER The FilePath doesn't contain a valid URI device path node.
@retval EFI_ALREADY_STARTED The driver is already in started state.
@retval EFI_OUT_OF_RESOURCES There are not enough resources.
@@ -38,13 +42,50 @@ HttpBootStart (
{
UINTN Index;
EFI_STATUS Status;
CHAR8 *Uri;
if (Private == NULL || FilePath == NULL) {
return EFI_INVALID_PARAMETER;
}
//
// Check the URI in the input FilePath, in order to see whether it is
// required to boot from a new specified boot file.
//
Status = HttpBootParseFilePath (FilePath, &Uri);
if (EFI_ERROR (Status)) {
return EFI_INVALID_PARAMETER;
}
//
// Check whether we need to stop and restart the HTTP boot driver.
//
if (Private->Started) {
return EFI_ALREADY_STARTED;
//
// Restart is needed in 2 cases:
// 1. Http boot driver has already been started but not on the required IP stack.
// 2. The specified boot file URI in FilePath is different with the one we have
// recorded before.
//
if ((UsingIpv6 != Private->UsingIpv6) ||
((Uri != NULL) && (AsciiStrCmp (Private->BootFileUri, Uri) != 0))) {
//
// Restart is required, first stop then continue this start function.
//
Status = HttpBootStop (Private);
if (EFI_ERROR (Status)) {
return Status;
}
} else {
//
// Restart is not required.
//
if (Uri != NULL) {
FreePool (Uri);
}
return EFI_ALREADY_STARTED;
}
}
//
@@ -55,17 +96,16 @@ HttpBootStart (
} else if (!UsingIpv6 && Private->Ip4Nic != NULL) {
Private->UsingIpv6 = FALSE;
} else {
if (Uri != NULL) {
FreePool (Uri);
}
return EFI_UNSUPPORTED;
}
//
// Check whether the URI address is specified.
// Record the specified URI and prepare the URI parser if needed.
//
Status = HttpBootParseFilePath (FilePath, &Private->FilePathUri);
if (EFI_ERROR (Status)) {
return EFI_INVALID_PARAMETER;
}
Private->FilePathUri = Uri;
if (Private->FilePathUri != NULL) {
Status = HttpParseUrl (
Private->FilePathUri,
@@ -74,6 +114,7 @@ HttpBootStart (
&Private->FilePathUriParser
);
if (EFI_ERROR (Status)) {
FreePool (Private->FilePathUri);
return Status;
}
}
@@ -101,7 +142,7 @@ HttpBootStart (
return Status;
}
}
Private->Started = TRUE;
Private->Started = TRUE;
return EFI_SUCCESS;
}
@@ -161,9 +202,11 @@ HttpBootDhcp (
@param[in] Buffer The memory buffer to transfer the file to. If Buffer is NULL,
then the size of the requested file is returned in
BufferSize.
@param[out] ImageType The image type of the downloaded file.
@retval EFI_SUCCESS Boot file was loaded successfully.
@retval EFI_INVALID_PARAMETER Private is NULL.
@retval EFI_INVALID_PARAMETER Private is NULL, or ImageType is NULL, or BufferSize is NULL.
@retval EFI_INVALID_PARAMETER *BufferSize is not zero, and Buffer is NULL.
@retval EFI_NOT_STARTED The driver is in stopped state.
@retval EFI_BUFFER_TOO_SMALL The BufferSize is too small to read the boot file. BufferSize has
been updated with the size needed to complete the request.
@@ -175,12 +218,17 @@ EFI_STATUS
HttpBootLoadFile (
IN HTTP_BOOT_PRIVATE_DATA *Private,
IN OUT UINTN *BufferSize,
IN VOID *Buffer OPTIONAL
IN VOID *Buffer, OPTIONAL
OUT HTTP_BOOT_IMAGE_TYPE *ImageType
)
{
EFI_STATUS Status;
if (Private == NULL) {
if (Private == NULL || ImageType == NULL || BufferSize == NULL ) {
return EFI_INVALID_PARAMETER;
}
if (*BufferSize != 0 && Buffer == NULL) {
return EFI_INVALID_PARAMETER;
}
@@ -222,7 +270,8 @@ HttpBootLoadFile (
Private,
TRUE,
&Private->BootFileSize,
NULL
NULL,
ImageType
);
if (EFI_ERROR (Status) && Status != EFI_BUFFER_TOO_SMALL) {
//
@@ -233,7 +282,8 @@ HttpBootLoadFile (
Private,
FALSE,
&Private->BootFileSize,
NULL
NULL,
ImageType
);
if (EFI_ERROR (Status) && Status != EFI_BUFFER_TOO_SMALL) {
return Status;
@@ -253,7 +303,8 @@ HttpBootLoadFile (
Private,
FALSE,
BufferSize,
Buffer
Buffer,
ImageType
);
}
@@ -388,6 +439,7 @@ HttpBootDxeLoadFile (
BOOLEAN MediaPresent;
BOOLEAN UsingIpv6;
EFI_STATUS Status;
HTTP_BOOT_IMAGE_TYPE ImageType;
if (This == NULL || BufferSize == NULL || FilePath == NULL) {
return EFI_INVALID_PARAMETER;
@@ -424,46 +476,34 @@ HttpBootDxeLoadFile (
// Initialize HTTP boot.
//
Status = HttpBootStart (Private, UsingIpv6, FilePath);
if (Status == EFI_ALREADY_STARTED) {
//
// Restart the HTTP boot driver in 2 cases:
// 1. Http boot Driver has already been started but not on the required IP version.
// 2. The required boot FilePath is different with the one we produced in the device path
// protocol.
//
if ((UsingIpv6 != Private->UsingIpv6) || ((Private->FilePathUri != NULL) && (AsciiStrCmp (Private->BootFileUri, Private->FilePathUri) != 0))) {
Status = HttpBootStop (Private);
if (!EFI_ERROR (Status)) {
Status = HttpBootStart (Private, UsingIpv6, FilePath);
}
}
if (Status != EFI_SUCCESS && Status != EFI_ALREADY_STARTED) {
return Status;
}
//
// Load the boot file.
//
if (Status == EFI_SUCCESS || Status == EFI_ALREADY_STARTED) {
Status = HttpBootLoadFile (Private, BufferSize, Buffer);
ImageType = ImageTypeMax;
Status = HttpBootLoadFile (Private, BufferSize, Buffer, &ImageType);
if (EFI_ERROR (Status)) {
if (Status == EFI_BUFFER_TOO_SMALL && (ImageType == ImageTypeVirtualCd || ImageType == ImageTypeVirtualDisk)) {
Status = EFI_WARN_FILE_SYSTEM;
} else if (Status != EFI_BUFFER_TOO_SMALL) {
HttpBootStop (Private);
}
return Status;
}
if (Status != EFI_SUCCESS && Status != EFI_BUFFER_TOO_SMALL) {
HttpBootStop (Private);
} else {
if (!Private->UsingIpv6) {
//
// Stop and release the DHCP4 child.
//
Private->Dhcp4->Stop (Private->Dhcp4);
Private->Dhcp4->Configure (Private->Dhcp4, NULL);
} else {
//
// Stop and release the DHCP6 child.
//
Private->Dhcp6->Stop (Private->Dhcp6);
Private->Dhcp6->Configure (Private->Dhcp6, NULL);
//
// Register the RAM Disk to the system if needed.
//
if (ImageType == ImageTypeVirtualCd || ImageType == ImageTypeVirtualDisk) {
Status = HttpBootRegisterRamDisk (Private, *BufferSize, Buffer, ImageType);
if (!EFI_ERROR (Status)) {
Status = EFI_WARN_FILE_SYSTEM;
}
}
return Status;
}