Add submodule dependency filesHEADmaster

Change-Id: Iaf8d18082d3991dec7c0ebbea540f092188eb4ec

1 files changed, 213 insertions, 0 deletions

diff --git a/roms/skiboot/libstb/tss2/ibmtpm20tss/utils/tssdev.c b/roms/skiboot/libstb/tss2/ibmtpm20tss/utils/tssdev.c
new file mode 100644
index 000000000..affd9db01
--- /dev/null
+++ b/roms/skiboot/libstb/tss2/ibmtpm20tss/utils/tssdev.c
@@ -0,0 +1,213 @@
+/********************************************************************************/
+/*										*/
+/*		Linux Device Transmit and Receive Utilities			*/
+/*			     Written by Ken Goldman				*/
+/*		       IBM Thomas J. Watson Research Center			*/
+/*										*/
+/* (c) Copyright IBM Corporation 2015 - 2020.					*/
+/*										*/
+/* All rights reserved.								*/
+/* 										*/
+/* Redistribution and use in source and binary forms, with or without		*/
+/* modification, are permitted provided that the following conditions are	*/
+/* met:										*/
+/* 										*/
+/* Redistributions of source code must retain the above copyright notice,	*/
+/* this list of conditions and the following disclaimer.			*/
+/* 										*/
+/* Redistributions in binary form must reproduce the above copyright		*/
+/* notice, this list of conditions and the following disclaimer in the		*/
+/* documentation and/or other materials provided with the distribution.		*/
+/* 										*/
+/* Neither the names of the IBM Corporation nor the names of its		*/
+/* contributors may be used to endorse or promote products derived from		*/
+/* this software without specific prior written permission.			*/
+/* 										*/
+/* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS		*/
+/* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT		*/
+/* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR	*/
+/* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT		*/
+/* HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,	*/
+/* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT		*/
+/* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,	*/
+/* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY	*/
+/* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT		*/
+/* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE	*/
+/* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.		*/
+/********************************************************************************/
+
+#ifdef TPM_POSIX
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <stdarg.h>
+#include <errno.h>
+
+#include <unistd.h>
+#include <fcntl.h>
+
+#include <ibmtss/tssresponsecode.h>
+#include <ibmtss/tsserror.h>
+#include <ibmtss/tssprint.h>
+#include "tssproperties.h"
+
+#include "tssdev.h"
+
+/* local prototypes */
+
+static uint32_t TSS_Dev_Open(TSS_CONTEXT *tssContext);
+static uint32_t TSS_Dev_SendCommand(int dev_fd, const uint8_t *buffer, uint16_t length,
+				    const char *message);
+static uint32_t TSS_Dev_ReceiveResponse(int dev_fd, uint8_t *buffer, uint32_t *length);
+
+/* global configuration */
+
+extern int tssVverbose;
+extern int tssVerbose;
+
+/* TSS_Dev_Transmit() transmits the command and receives the response.
+
+   Can return device transmit and receive packet errors, but normally returns the TPM response code.
+*/
+
+TPM_RC TSS_Dev_Transmit(TSS_CONTEXT *tssContext,
+			uint8_t *responseBuffer, uint32_t *read,
+			const uint8_t *commandBuffer, uint32_t written,
+			const char *message)
+{
+    TPM_RC rc = 0;
+    
+    /* open on first transmit */
+    if (tssContext->tssFirstTransmit) {	
+	if (rc == 0) {
+	    rc = TSS_Dev_Open(tssContext);
+	}
+	if (rc == 0) {
+	    tssContext->tssFirstTransmit = FALSE;
+	}
+    }
+    /* send the command to the device.  Error if the device send fails. */
+    if (rc == 0) {
+	rc = TSS_Dev_SendCommand(tssContext->dev_fd, commandBuffer, written, message);
+    }
+    /* receive the response from the dev_fd.  Returns dev_fd errors, malformed response errors.
+       Else returns the TPM response code. */
+    if (rc == 0) {
+	rc = TSS_Dev_ReceiveResponse(tssContext->dev_fd, responseBuffer, read);
+    }
+    return rc;
+}
+
+/* TSS_Dev_Open() opens the TPM device (through the device driver) */
+
+static uint32_t TSS_Dev_Open(TSS_CONTEXT *tssContext)
+{
+    uint32_t rc = 0;
+    
+    if (rc == 0) {
+	if (tssVverbose) printf("TSS_Dev_Open: Opening %s\n", tssContext->tssDevice);
+	tssContext->dev_fd = open(tssContext->tssDevice, O_RDWR);
+	if (tssContext->dev_fd < 0) {
+	    if (tssVerbose) printf("TSS_Dev_Open: Error opening %s\n", tssContext->tssDevice);
+	    rc = TSS_RC_NO_CONNECTION;
+	}
+    }
+    return rc;
+}
+
+/* TSS_Dev_SendCommand() sends the TPM command buffer to the device.
+
+   Returns an error if the device write fails.
+*/
+
+static uint32_t TSS_Dev_SendCommand(int dev_fd,
+				    const uint8_t *buffer, uint16_t length,
+				    const char *message)
+{
+    uint32_t rc = 0;
+    int irc;
+    
+    if (message != NULL) {
+	if (tssVverbose) printf("TSS_Dev_SendCommand: %s\n", message);
+    }
+    if ((rc == 0) && tssVverbose) {
+	TSS_PrintAll("TSS_Dev_SendCommand",
+		     buffer, length);
+    }
+    if (rc == 0) {
+	irc = write(dev_fd, buffer, length);
+	if (irc < 0) {
+	    if (tssVerbose) printf("TSS_Dev_SendCommand: write error %d %s\n",
+				   errno, strerror(errno));
+	    rc = TSS_RC_BAD_CONNECTION;
+	}
+    }
+    return rc;
+}
+
+/* TSS_Dev_ReceiveResponse() reads a response buffer from the device.  'buffer' must be at least
+   MAX_RESPONSE_SIZE bytes.
+
+   Returns TPM packet error code.
+
+   Validates that the packet length and the packet responseSize match 
+*/
+
+static uint32_t TSS_Dev_ReceiveResponse(int dev_fd, uint8_t *buffer, uint32_t *length)
+{
+    uint32_t 	rc = 0;
+    int 	irc;		/* read() return code, negative is error, positive is length */
+    uint32_t 	responseSize = 0;	/* from TPM packet response stream */
+
+    if (tssVverbose) printf("TSS_Dev_ReceiveResponse:\n");
+    /* read the TPM device */
+    if (rc == 0) {
+	irc = read(dev_fd, buffer, MAX_RESPONSE_SIZE);
+	if (irc <= 0) {
+	    rc = TSS_RC_BAD_CONNECTION;
+	    if (irc < 0) {
+		if (tssVerbose) printf("TSS_Dev_ReceiveResponse: read error %d %s\n",
+				       errno, strerror(errno));
+	    }
+	}
+    }
+    /* read() is successful, trace the response */
+    if ((rc == 0) && tssVverbose) {
+	TSS_PrintAll("TSS_Dev_ReceiveResponse",
+		     buffer, irc);
+    }
+    /* verify that there is at least a tag, responseSize, and responseCode in TPM response */
+    if (rc == 0) {
+	if ((unsigned int)irc < (sizeof(TPM_ST) + sizeof(uint32_t) + sizeof(uint32_t))) {
+	    if (tssVerbose) printf("TSS_Dev_ReceiveResponse: read bytes %u < header\n", irc);
+	    rc = TSS_RC_MALFORMED_RESPONSE;
+	}
+    }
+    /* get responseSize from the packet */
+    if (rc == 0) {
+	responseSize = ntohl(*(uint32_t *)(buffer + sizeof(TPM_ST)));
+	/* sanity check against the length actually received, the return code */
+	if ((uint32_t)irc != responseSize) {
+	    if (tssVerbose) printf("TSS_Dev_ReceiveResponse: read bytes %u != responseSize %u\n",
+				   (uint32_t)irc, responseSize);
+	    rc = TSS_RC_MALFORMED_RESPONSE;
+	}
+    }
+    /* if there was no lower level failure, return the TPM packet responseCode */
+    if (rc == 0) {
+	rc = ntohl(*(uint32_t *)(buffer + sizeof(TPM_ST)+ sizeof(uint32_t)));
+    }
+    *length = responseSize;
+    if (tssVverbose) printf("TSS_Dev_ReceiveResponse: rc %08x\n", rc);
+    return rc;
+}	
+
+TPM_RC TSS_Dev_Close(TSS_CONTEXT *tssContext)
+{
+    if (tssVverbose) printf("TSS_Dev_Close: Closing %s\n", tssContext->tssDevice);
+    close(tssContext->dev_fd);
+    return 0;
+}
+
+#endif	/* TPM_POSIX */