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-rw-r--r--board/freescale/common/fsl_chain_of_trust.c53
1 files changed, 53 insertions, 0 deletions
diff --git a/board/freescale/common/fsl_chain_of_trust.c b/board/freescale/common/fsl_chain_of_trust.c
new file mode 100644
index 0000000000..ff67bd7b8f
--- /dev/null
+++ b/board/freescale/common/fsl_chain_of_trust.c
@@ -0,0 +1,53 @@
+/*
+ * Copyright 2015 Freescale Semiconductor, Inc.
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <common.h>
+#include <fsl_validate.h>
+#include <fsl_sfp.h>
+
+#ifdef CONFIG_LS102XA
+#include <asm/arch/immap_ls102xa.h>
+#endif
+
+#if defined(CONFIG_MPC85xx)
+#define CONFIG_DCFG_ADDR CONFIG_SYS_MPC85xx_GUTS_ADDR
+#else
+#define CONFIG_DCFG_ADDR CONFIG_SYS_FSL_GUTS_ADDR
+#endif
+
+#ifdef CONFIG_SYS_FSL_CCSR_GUR_LE
+#define gur_in32(a) in_le32(a)
+#else
+#define gur_in32(a) in_be32(a)
+#endif
+
+/* Check the Boot Mode. If Secure, return 1 else return 0 */
+int fsl_check_boot_mode_secure(void)
+{
+ uint32_t val;
+ struct ccsr_sfp_regs *sfp_regs = (void *)(CONFIG_SYS_SFP_ADDR);
+ struct ccsr_gur __iomem *gur = (void *)(CONFIG_DCFG_ADDR);
+
+ val = sfp_in32(&sfp_regs->ospr) & ITS_MASK;
+ if (val == ITS_MASK)
+ return 1;
+
+#if defined(CONFIG_FSL_CORENET) || !defined(CONFIG_MPC85xx)
+ /* For PBL based platforms check the SB_EN bit in RCWSR */
+ val = gur_in32(&gur->rcwsr[RCW_SB_EN_REG_INDEX - 1]) & RCW_SB_EN_MASK;
+ if (val == RCW_SB_EN_MASK)
+ return 1;
+#endif
+
+#if defined(CONFIG_MPC85xx) && !defined(CONFIG_FSL_CORENET)
+ /* For Non-PBL Platforms, check the Device Status register 2*/
+ val = gur_in32(&gur->pordevsr2) & MPC85xx_PORDEVSR2_SBC_MASK;
+ if (val != MPC85xx_PORDEVSR2_SBC_MASK)
+ return 1;
+
+#endif
+ return 0;
+}