diff options
| author | Jordan Justen <jordan.l.justen@intel.com> | 2014-01-21 19:39:04 +0000 |
|---|---|---|
| committer | jljusten <jljusten@6f19259b-4bc3-4df7-8a09-765794883524> | 2014-01-21 19:39:04 +0000 |
| commit | 4b4b783dbe49102e5acaa9852e737820a645a559 (patch) | |
| tree | 596c36c732c20977a11370a102aab9f1f0af1952 /OvmfPkg | |
| parent | b6f564a7633224b04e297b7a36af751fecd7641f (diff) | |
| download | edk2-platforms-4b4b783dbe49102e5acaa9852e737820a645a559.tar.xz | |
OvmfPkg/Sec: Add FindFfsSectionInstance
This allow you to search for an 'instance' of a section
within a series of FFS sections.
For example, we will split the MAINFV into a PEI and DXE
FV, and then compress those two FV's together within a
FFS FV file. The DXE FV will appear as the second section
of the file, and therefore we will search for it using
an Instance=1 value.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Jordan Justen <jordan.l.justen@intel.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@15150 6f19259b-4bc3-4df7-8a09-765794883524
Diffstat (limited to 'OvmfPkg')
| -rw-r--r-- | OvmfPkg/Sec/SecMain.c | 46 |
1 files changed, 43 insertions, 3 deletions
diff --git a/OvmfPkg/Sec/SecMain.c b/OvmfPkg/Sec/SecMain.c index e25825e51a..6e238fe337 100644 --- a/OvmfPkg/Sec/SecMain.c +++ b/OvmfPkg/Sec/SecMain.c @@ -128,9 +128,13 @@ FindMainFv ( Locates a section within a series of sections
with the specified section type.
+ The Instance parameter indicates which instance of the section
+ type to return. (0 is first instance, 1 is second...)
+
@param[in] Sections The sections to search
@param[in] SizeOfSections Total size of all sections
@param[in] SectionType The section type to locate
+ @param[in] Instance The section instance number
@param[out] FoundSection The FFS section if found
@retval EFI_SUCCESS The file and section was found
@@ -139,10 +143,11 @@ FindMainFv ( **/
EFI_STATUS
-FindFfsSectionInSections (
+FindFfsSectionInstance (
IN VOID *Sections,
IN UINTN SizeOfSections,
IN EFI_SECTION_TYPE SectionType,
+ IN UINTN Instance,
OUT EFI_COMMON_SECTION_HEADER **FoundSection
)
{
@@ -182,8 +187,12 @@ FindFfsSectionInSections ( // Look for the requested section type
//
if (Section->Type == SectionType) {
- *FoundSection = Section;
- return EFI_SUCCESS;
+ if (Instance == 0) {
+ *FoundSection = Section;
+ return EFI_SUCCESS;
+ } else {
+ Instance--;
+ }
}
}
@@ -191,6 +200,37 @@ FindFfsSectionInSections ( }
/**
+ Locates a section within a series of sections
+ with the specified section type.
+
+ @param[in] Sections The sections to search
+ @param[in] SizeOfSections Total size of all sections
+ @param[in] SectionType The section type to locate
+ @param[out] FoundSection The FFS section if found
+
+ @retval EFI_SUCCESS The file and section was found
+ @retval EFI_NOT_FOUND The file and section was not found
+ @retval EFI_VOLUME_CORRUPTED The firmware volume was corrupted
+
+**/
+EFI_STATUS
+FindFfsSectionInSections (
+ IN VOID *Sections,
+ IN UINTN SizeOfSections,
+ IN EFI_SECTION_TYPE SectionType,
+ OUT EFI_COMMON_SECTION_HEADER **FoundSection
+ )
+{
+ return FindFfsSectionInstance (
+ Sections,
+ SizeOfSections,
+ SectionType,
+ 0,
+ FoundSection
+ );
+}
+
+/**
Locates a FFS file with the specified file type and a section
within that file with the specified section type.
|