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Diffstat (limited to 'src/security/vboot/misc.h')
-rw-r--r--src/security/vboot/misc.h59
1 files changed, 55 insertions, 4 deletions
diff --git a/src/security/vboot/misc.h b/src/security/vboot/misc.h
index b4fae19d74..23159c8a0d 100644
--- a/src/security/vboot/misc.h
+++ b/src/security/vboot/misc.h
@@ -16,6 +16,8 @@
#ifndef __VBOOT_MISC_H__
#define __VBOOT_MISC_H__
+#include <assert.h>
+#include <arch/early_variables.h>
#include <security/vboot/vboot_common.h>
struct vb2_context;
@@ -66,13 +68,62 @@ int vboot_is_slot_selected(void);
void vboot_fill_handoff(void);
/*
- * Source: security/vboot/vboot_loader.c
+ * Source: security/vboot/bootmode.c
*/
-int vboot_logic_executed(void);
+void vboot_save_recovery_reason_vbnv(void);
/*
- * Source: security/vboot/bootmode.c
+ * The stage loading code is compiled and entered from multiple stages. The
+ * helper functions below attempt to provide more clarity on when certain
+ * code should be called. They are implemented inline for better compile-time
+ * code elimination.
*/
-void vboot_save_recovery_reason_vbnv(void);
+
+static inline int verification_should_run(void)
+{
+ if (CONFIG(VBOOT_SEPARATE_VERSTAGE))
+ return ENV_VERSTAGE;
+ else if (CONFIG(VBOOT_STARTS_IN_ROMSTAGE))
+ return ENV_ROMSTAGE;
+ else if (CONFIG(VBOOT_STARTS_IN_BOOTBLOCK))
+ return ENV_BOOTBLOCK;
+ else
+ dead_code();
+}
+
+static inline int verstage_should_load(void)
+{
+ if (CONFIG(VBOOT_SEPARATE_VERSTAGE))
+ return ENV_BOOTBLOCK;
+ else
+ return 0;
+}
+
+static inline int vboot_logic_executed(void)
+{
+ extern int vboot_executed; /* should not be globally accessible */
+
+ /* If we are in the stage that runs verification, or in the stage that
+ both loads the verstage and is returned to from it afterwards, we
+ need to check a global to see if verfication has run. */
+ if (verification_should_run() ||
+ (verstage_should_load() && CONFIG(VBOOT_RETURN_FROM_VERSTAGE)))
+ return car_get_var(vboot_executed);
+
+ if (CONFIG(VBOOT_STARTS_IN_BOOTBLOCK)) {
+ /* All other stages are "after the bootblock" */
+ return !ENV_BOOTBLOCK;
+ } else if (CONFIG(VBOOT_STARTS_IN_ROMSTAGE)) {
+ /* Post-RAM stages are "after the romstage" */
+#ifdef __PRE_RAM__
+ return 0;
+#else
+ return 1;
+#endif
+ } else {
+ dead_code();
+ }
+}
+
#endif /* __VBOOT_MISC_H__ */