12 files changed, 24 insertions, 0 deletions
diff --git a/src/include/cpu/amd/microcode.h b/src/include/cpu/amd/microcode.h
index 74075944bb5d..9e889364e03b 100644
--- a/src/include/cpu/amd/microcode.h
+++ b/src/include/cpu/amd/microcode.h
@@ -1,3 +1,5 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
 #ifndef CPU_AMD_MICROCODE_H
 #define CPU_AMD_MICROCODE_H
 
diff --git a/src/include/cpu/amd/mtrr.h b/src/include/cpu/amd/mtrr.h
index 6fe1628bc0b8..bc3f313f4259 100644
--- a/src/include/cpu/amd/mtrr.h
+++ b/src/include/cpu/amd/mtrr.h
@@ -1,3 +1,5 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
 #ifndef CPU_AMD_MTRR_H
 #define CPU_AMD_MTRR_H
 
diff --git a/src/include/cpu/cpu.h b/src/include/cpu/cpu.h
index 99249ba62976..66103684ba1f 100644
--- a/src/include/cpu/cpu.h
+++ b/src/include/cpu/cpu.h
@@ -1,3 +1,5 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
 #ifndef CPU_CPU_H
 #define CPU_CPU_H
 
diff --git a/src/include/cpu/intel/hyperthreading.h b/src/include/cpu/intel/hyperthreading.h
index 0a1461ceb592..0613aa114ff6 100644
--- a/src/include/cpu/intel/hyperthreading.h
+++ b/src/include/cpu/intel/hyperthreading.h
@@ -1,3 +1,5 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
 #ifndef CPU_INTEL_HYPERTHREADING_H
 #define CPU_INTEL_HYPERTHREADING_H
 
diff --git a/src/include/cpu/power/scom.h b/src/include/cpu/power/scom.h
index ef5796c4e1cc..f5354c831480 100644
--- a/src/include/cpu/power/scom.h
+++ b/src/include/cpu/power/scom.h
@@ -1,3 +1,5 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+
 #ifndef CPU_PPC64_SCOM_H
 #define CPU_PPC64_SCOM_H
 
diff --git a/src/include/cpu/power/spr.h b/src/include/cpu/power/spr.h
index 3b229f73a33a..300147d7dda7 100644
--- a/src/include/cpu/power/spr.h
+++ b/src/include/cpu/power/spr.h
@@ -1,3 +1,5 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+
 #ifndef CPU_PPC64_SPR_H
 #define CPU_PPC64_SPR_H
 
diff --git a/src/include/cpu/x86/lapic.h b/src/include/cpu/x86/lapic.h
index 400199b029dc..5fa5608db94e 100644
--- a/src/include/cpu/x86/lapic.h
+++ b/src/include/cpu/x86/lapic.h
@@ -1,3 +1,5 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
 #ifndef CPU_X86_LAPIC_H
 #define CPU_X86_LAPIC_H
 
diff --git a/src/include/cpu/x86/lapic_def.h b/src/include/cpu/x86/lapic_def.h
index 84a3413ac384..e118b6b4279a 100644
--- a/src/include/cpu/x86/lapic_def.h
+++ b/src/include/cpu/x86/lapic_def.h
@@ -1,3 +1,5 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
 #ifndef CPU_X86_LAPIC_DEF_H
 #define CPU_X86_LAPIC_DEF_H
 
diff --git a/src/include/cpu/x86/msr.h b/src/include/cpu/x86/msr.h
index 9f30c057edc6..ca2a37fe951d 100644
--- a/src/include/cpu/x86/msr.h
+++ b/src/include/cpu/x86/msr.h
@@ -1,3 +1,5 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
 #ifndef CPU_X86_MSR_H
 #define CPU_X86_MSR_H
 
diff --git a/src/include/cpu/x86/mtrr.h b/src/include/cpu/x86/mtrr.h
index b2bc2c86b1ef..ed55c0402072 100644
--- a/src/include/cpu/x86/mtrr.h
+++ b/src/include/cpu/x86/mtrr.h
@@ -1,3 +1,5 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
 #ifndef CPU_X86_MTRR_H
 #define CPU_X86_MTRR_H
 
diff --git a/src/include/cpu/x86/post_code.h b/src/include/cpu/x86/post_code.h
index 200d93ec99e3..db8f90dacf6e 100644
--- a/src/include/cpu/x86/post_code.h
+++ b/src/include/cpu/x86/post_code.h
@@ -1,3 +1,5 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
 #ifndef __X86_POST_CODE_H__
 #define __X86_POST_CODE_H__
 
diff --git a/src/include/cpu/x86/tsc.h b/src/include/cpu/x86/tsc.h
index ddce96bb399d..5d173da66e30 100644
--- a/src/include/cpu/x86/tsc.h
+++ b/src/include/cpu/x86/tsc.h
@@ -1,3 +1,5 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
 #ifndef CPU_X86_TSC_H
 #define CPU_X86_TSC_H