Secure Boot: Support reading component ID from container's SW header

- Repurposed container SW header reserved field for component ID
- Parse component ID when reading container header
- Implement user API to read component ID

Change-Id: I005f0e1cb20d4022333d05bfe86d88bf706f60de
Reviewed-on: http://ralgit01.raleigh.ibm.com/gerrit1/46173
Tested-by: Jenkins Server <pfd-jenkins+hostboot@us.ibm.com>
Tested-by: Jenkins OP Build CI <op-jenkins+hostboot@us.ibm.com>
Tested-by: Jenkins OP HW <op-hw-jenkins+hostboot@us.ibm.com>
Tested-by: FSP CI Jenkins <fsp-CI-jenkins+hostboot@us.ibm.com>
Reviewed-by: Michael Baiocchi <mbaiocch@us.ibm.com>
Reviewed-by: Stephen M. Cprek <smcprek@us.ibm.com>
Reviewed-by: Daniel M. Crowell <dcrowell@us.ibm.com>

1 files changed, 16 insertions, 0 deletions

diff --git a/src/include/usr/secureboot/containerheader.H b/src/include/usr/secureboot/containerheader.H
index 5a554f0fc..49ecc9223 100644
--- a/src/include/usr/secureboot/containerheader.H
+++ b/src/include/usr/secureboot/containerheader.H
@@ -58,6 +58,7 @@ class ContainerHeader
             iv_pHdrStart = reinterpret_cast<const uint8_t*>(i_header);
             memset(&iv_headerInfo, 0x00, sizeof(iv_headerInfo));
             memset(iv_hwKeyHash, 0, sizeof(SHA512_t));
+            memset(iv_componentId,0x00,sizeof(iv_componentId));
             parse_header(i_header);
         };
 
@@ -142,6 +143,14 @@ class ContainerHeader
          */
         bool isValid() const;
 
+        /**
+         *  @brief Returns the container's component ID as an invariant
+         *      character string, or an empty string if none provided.
+         *
+         *  @return const char* Component ID string
+         */
+        const char* componentId() const;
+
     private:
         /**
          * @brief Default Constructor in private to prevent being instantiated
@@ -161,6 +170,13 @@ class ContainerHeader
             ROM_sw_sig_raw sw_sig;
         };
 
+        /**
+         *  @brief Container's component ID (one byte larger than associated
+         *      container header field to allow for a NULL terminator)
+         */
+        char iv_componentId[  sizeof(ROM_sw_header_raw::component_id)
+                            + sizeof(uint8_t) ];
+
         // Entire cached container header content
         SecureHeaderInfo iv_headerInfo;