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-rw-r--r--arch/x86/cpu/quark/quark.c3
-rw-r--r--arch/x86/include/asm/arch-quark/quark.h1
2 files changed, 4 insertions, 0 deletions
diff --git a/arch/x86/cpu/quark/quark.c b/arch/x86/cpu/quark/quark.c
index 8d53fe3..3ddf079 100644
--- a/arch/x86/cpu/quark/quark.c
+++ b/arch/x86/cpu/quark/quark.c
@@ -288,5 +288,8 @@ void board_final_cleanup(void)
val &= ~0xff0000;
writel(val, &rcba->esd);
+ /* Lock HMBOUND for security */
+ msg_port_setbits(MSG_PORT_HOST_BRIDGE, HM_BOUND, HM_BOUND_LOCK);
+
return;
}
diff --git a/arch/x86/include/asm/arch-quark/quark.h b/arch/x86/include/asm/arch-quark/quark.h
index eb3afbf..338c896 100644
--- a/arch/x86/include/asm/arch-quark/quark.h
+++ b/arch/x86/include/asm/arch-quark/quark.h
@@ -32,6 +32,7 @@
/* Host Memory I/O Boundary */
#define HM_BOUND 0x08
+#define HM_BOUND_LOCK 0x00000001
/* Extended Configuration Space */
#define HEC_REG 0x09