1 files changed, 104 insertions, 0 deletions
diff --git a/firmware/stub/load_firmware_stub.c b/firmware/stub/load_firmware_stub.c
new file mode 100644
index 00000000..9453856a
--- /dev/null
+++ b/firmware/stub/load_firmware_stub.c
@@ -0,0 +1,104 @@
+/* Copyright (c) 2010 The Chromium OS Authors. All rights reserved.
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ *
+ * TEMPORARY stub for calling LoadFirmware() which looks like the old
+ * VerifyFirmwareDriver_f() call.
+ * (Firmware portion)
+ */
+
+#include "load_firmware_fw.h"
+#include "utility.h"
+
+#define  BOOT_FIRMWARE_A_CONTINUE 1
+#define  BOOT_FIRMWARE_B_CONTINUE 2
+#define  BOOT_FIRMWARE_RECOVERY_CONTINUE 3
+
+typedef struct CallerInternal {
+  uint8_t *firmwareA;
+  uint64_t firmwareA_size;
+  uint8_t *firmwareB;
+  uint64_t firmwareB_size;
+} CallerInternal;
+
+int GetFirmwareBody(LoadFirmwareParams* params, uint64_t index) {
+
+  CallerInternal* ci = (CallerInternal*)params->caller_internal;
+  uint8_t *fw;
+  uint64_t size;
+
+  /* In a real implementation, GetFirmwareBody() should be what reads
+   * and decompresses the firmware volume.  In this temporary hack, we
+   * just pass the pointer which we got from
+   * VerifyFirmwareDriver_Stub(). */
+  switch(index) {
+    case 0:
+      size = ci->firmwareA_size;
+      fw = ci->firmwareA;
+    case 1:
+      size = ci->firmwareB_size;
+      fw = ci->firmwareB;
+    default:
+      /* Anything else is invalid */
+      return 1;
+  }
+
+  /* Need to call UpdateFirmwareBodyHash() with the firmware volume
+   * data.  In this temporary hack, the FV is already decompressed, so
+   * we pass in the entire volume at once.  In a real implementation,
+   * you should call this as the FV is being decompressed. */
+  UpdateFirmwareBodyHash(params, fw, size);
+
+  /* Success */
+  return 0;
+}
+
+
+/* Where you're currently calling VerifyFirmwareDriver_f(), call this
+ * function instead.  Because you still need to read in both firmware
+ * volumes, this call will still be slow.  Once we reach feature
+ * complete, you should modify your code to call LoadImage()
+ * directly. */
+int VerifyFirmwareDriver_stub(uint8_t* root_key_blob,
+                              uint8_t* verification_headerA,
+                              uint8_t* firmwareA,
+                              uint8_t* verification_headerB,
+                              uint8_t* firmwareB) {
+
+  int rv;
+
+  CallerInternal ci;
+
+  /* Copy the firmware volume pointers to our global variables. */
+  ci.firmwareA = firmwareA;
+  ci.firmwareB = firmwareB;
+
+  /* TODO: YOU NEED TO PASS IN THE FIRMWARE VOLUME SIZES SOMEHOW */
+  ci.firmwareA_size = 0;
+  ci.firmwareB_size = 0;
+
+  /* Set up the params for LoadFirmware() */
+  LoadFirmwareParams p;
+  p.caller_internal = &ci;
+  p.firmware_root_key_blob = root_key_blob;
+  p.verification_block_0 = verification_headerA;
+  p.verification_block_1 = verification_headerB;
+
+  /* Allocate a key blob buffer */
+  p.kernel_sign_key_blob = Malloc(LOAD_FIRMWARE_KEY_BLOB_REC_SIZE);
+  p.kernel_sign_key_size = LOAD_FIRMWARE_KEY_BLOB_REC_SIZE;
+
+  /* Call LoadFirmware() */
+  rv = LoadFirmware(&p);
+  if (LOAD_FIRMWARE_SUCCESS == rv) {
+    /* TODO: YOU NEED TO KEEP TRACK OF p.kernel_sign_key_blob AND
+     * p.kernel_sign_key_size SO YOU CAN PASS THEM TO LoadKernel(). */
+
+    return (0 == p.firmware_index ? BOOT_FIRMWARE_A_CONTINUE :
+            BOOT_FIRMWARE_B_CONTINUE);
+
+  } else {
+    /* Error */
+    return BOOT_FIRMWARE_RECOVERY_CONTINUE;
+  }
+}