From 0a6b2714adfffce6a1497bd2ed6cbf4f7b4b0236 Mon Sep 17 00:00:00 2001 From: Aneesh Bansal Date: Fri, 22 Jan 2016 16:37:25 +0530 Subject: secure_boot: create function to determine boot mode A function is created to detrmine if the boot mode is secure or non-secure for differnt SoC's. Signed-off-by: Aneesh Bansal Acked-by: Ruchika Gupta Reviewed-by: York Sun --- board/freescale/common/fsl_chain_of_trust.c | 53 +++++++++++++++++++++++++++++ 1 file changed, 53 insertions(+) create mode 100644 board/freescale/common/fsl_chain_of_trust.c (limited to 'board/freescale/common') 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 +#include +#include + +#ifdef CONFIG_LS102XA +#include +#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; +} -- cgit v1.2.3