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[efi] Add ability to dump all openers of a given protocol on a handle

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Signed-off-by: Michael Brown <mcb30@ipxe.org>
This commit is contained in:
Michael Brown
2014-07-31 00:09:58 +01:00
parent 550f212d15
commit 736fcf60d1
2 changed files with 106 additions and 4 deletions
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83
src/interface/efi/efi_debug.c
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@@ -183,6 +183,77 @@ const char * efi_guid_ntoa ( EFI_GUID *guid ) {
return uuid_ntoa ( &u.uuid );
}
/**
* Name protocol open attributes
*
* @v attributes Protocol open attributes
* @ret name Protocol open attributes name
*
* Returns a (static) string with characters for each set bit
* corresponding to BY_(H)ANDLE_PROTOCOL, (G)ET_PROTOCOL,
* (T)EST_PROTOCOL, BY_(C)HILD_CONTROLLER, BY_(D)RIVER, and
* E(X)CLUSIVE.
*/
static const char * efi_open_attributes_name ( unsigned int attributes ) {
static char attribute_chars[] = "HGTCDX";
static char name[ sizeof ( attribute_chars ) ];
char *tmp = name;
unsigned int i;
for ( i = 0 ; i < ( sizeof ( attribute_chars ) - 1 ) ; i++ ) {
if ( attributes & ( 1 << i ) )
*(tmp++) = attribute_chars[i];
}
*tmp = '\0';
return name;
}
/**
* Print list of openers of a given protocol on a given handle
*
* @v handle EFI handle
* @v protocol Protocol GUID
*/
void dbg_efi_openers ( EFI_HANDLE handle, EFI_GUID *protocol ) {
EFI_BOOT_SERVICES *bs = efi_systab->BootServices;
EFI_OPEN_PROTOCOL_INFORMATION_ENTRY *openers;
EFI_OPEN_PROTOCOL_INFORMATION_ENTRY *opener;
UINTN count;
unsigned int i;
EFI_STATUS efirc;
int rc;
/* Retrieve list of openers */
if ( ( efirc = bs->OpenProtocolInformation ( handle, protocol, &openers,
&count ) ) != 0 ) {
rc = -EEFI ( efirc );
printf ( "EFI could not retrieve openers for %s on %p: %s\n",
efi_guid_ntoa ( protocol ), handle, strerror ( rc ) );
return;
}
/* Dump list of openers */
for ( i = 0 ; i < count ; i++ ) {
opener = &openers[i];
printf ( "HANDLE %p %s %s opened %dx (%s)",
handle, efi_handle_name ( handle ),
efi_guid_ntoa ( protocol ), opener->OpenCount,
efi_open_attributes_name ( opener->Attributes ) );
printf ( " by %p %s", opener->AgentHandle,
efi_handle_name ( opener->AgentHandle ) );
if ( opener->ControllerHandle == handle ) {
printf ( "\n" );
} else {
printf ( " for %p %s\n", opener->ControllerHandle,
efi_handle_name ( opener->ControllerHandle ) );
}
}
/* Free list */
bs->FreePool ( openers );
}
/**
* Print list of protocol handlers attached to a handle
*
@@ -190,7 +261,8 @@ const char * efi_guid_ntoa ( EFI_GUID *guid ) {
*/
void dbg_efi_protocols ( EFI_HANDLE handle ) {
EFI_BOOT_SERVICES *bs = efi_systab->BootServices;
EFI_GUID **protocols;
EFI_GUID **protocols;
EFI_GUID *protocol;
UINTN count;
unsigned int i;
EFI_STATUS efirc;
@@ -206,8 +278,13 @@ void dbg_efi_protocols ( EFI_HANDLE handle ) {
}
/* Dump list of protocols */
for ( i = 0 ; i < count ; i++ )
printf ( "%s\n", efi_guid_ntoa ( protocols[i] ) );
for ( i = 0 ; i < count ; i++ ) {
protocol = protocols[i];
printf ( "HANDLE %p %s %s supported\n",
handle, efi_handle_name ( handle ),
efi_guid_ntoa ( protocol ) );
dbg_efi_openers ( handle, protocol );
}
/* Free list */
bs->FreePool ( protocols );