2 * Copyright 2015 Freescale Semiconductor, Inc.
4 * SPDX-License-Identifier: GPL-2.0+
9 #include <fsl_validate.h>
10 #include <fsl_secboot_err.h>
14 #if defined(CONFIG_SPL_BUILD) && defined(CONFIG_SPL_FRAMEWORK)
18 #ifdef CONFIG_ADDR_MAP
22 #ifdef CONFIG_FSL_CORENET
23 #include <asm/fsl_pamu.h>
26 #ifdef CONFIG_ARCH_LS1021A
27 #include <asm/arch/immap_ls102xa.h>
30 #if defined(CONFIG_MPC85xx)
31 #define CONFIG_DCFG_ADDR CONFIG_SYS_MPC85xx_GUTS_ADDR
33 #define CONFIG_DCFG_ADDR CONFIG_SYS_FSL_GUTS_ADDR
36 #ifdef CONFIG_SYS_FSL_CCSR_GUR_LE
37 #define gur_in32(a) in_le32(a)
39 #define gur_in32(a) in_be32(a)
42 /* Check the Boot Mode. If Secure, return 1 else return 0 */
43 int fsl_check_boot_mode_secure(void)
46 struct ccsr_sfp_regs *sfp_regs = (void *)(CONFIG_SYS_SFP_ADDR);
47 struct ccsr_gur __iomem *gur = (void *)(CONFIG_DCFG_ADDR);
49 val = sfp_in32(&sfp_regs->ospr) & ITS_MASK;
53 #if defined(CONFIG_FSL_CORENET) || !defined(CONFIG_MPC85xx)
54 /* For PBL based platforms check the SB_EN bit in RCWSR */
55 val = gur_in32(&gur->rcwsr[RCW_SB_EN_REG_INDEX - 1]) & RCW_SB_EN_MASK;
56 if (val == RCW_SB_EN_MASK)
60 #if defined(CONFIG_MPC85xx) && !defined(CONFIG_FSL_CORENET)
61 /* For Non-PBL Platforms, check the Device Status register 2*/
62 val = gur_in32(&gur->pordevsr2) & MPC85xx_PORDEVSR2_SBC_MASK;
63 if (val != MPC85xx_PORDEVSR2_SBC_MASK)
70 #ifndef CONFIG_SPL_BUILD
71 int fsl_setenv_chain_of_trust(void)
74 * If Boot Mode is Non-Secure, no changes are required
76 if (fsl_check_boot_mode_secure() == 0)
79 /* If Boot mode is Secure, set the environment variables
80 * bootdelay = 0 (To disable Boot Prompt)
81 * bootcmd = CONFIG_CHAIN_BOOT_CMD (Validate and execute Boot script)
83 setenv("bootdelay", "0");
84 setenv("bootcmd", CONFIG_CHAIN_BOOT_CMD);
89 #ifdef CONFIG_SPL_BUILD
90 void spl_validate_uboot(uint32_t hdr_addr, uintptr_t img_addr)
96 * If Boot Mode is Non-Secure, skip validation
98 if (fsl_check_boot_mode_secure() == 0)
101 printf("SPL: Validating U-Boot image\n");
103 #ifdef CONFIG_ADDR_MAP
107 #ifdef CONFIG_FSL_CORENET
109 fsl_secboot_handle_error(ERROR_ESBC_PAMU_INIT);
112 #ifdef CONFIG_FSL_CAAM
114 fsl_secboot_handle_error(ERROR_ESBC_SEC_INIT);
118 * dm_init_and_scan() is called as part of common SPL framework, so no
119 * need to call it again but in case of powerpc platforms which currently
120 * do not use common SPL framework, so need to call this function here.
122 #if defined(CONFIG_SPL_DM) && (!defined(CONFIG_SPL_FRAMEWORK))
123 dm_init_and_scan(true);
125 res = fsl_secboot_validate(hdr_addr, CONFIG_SPL_UBOOT_KEY_HASH,
129 printf("SPL: Validation of U-boot successful\n");
132 #ifdef CONFIG_SPL_FRAMEWORK
133 /* Override weak funtion defined in SPL framework to enable validation
134 * of main u-boot image before jumping to u-boot image.
136 void __noreturn jump_to_image_no_args(struct spl_image_info *spl_image)
138 typedef void __noreturn (*image_entry_noargs_t)(void);
141 image_entry_noargs_t image_entry =
142 (image_entry_noargs_t)(unsigned long)spl_image->entry_point;
144 hdr_addr = (spl_image->entry_point + spl_image->size -
145 CONFIG_U_BOOT_HDR_SIZE);
146 spl_validate_uboot(hdr_addr, (uintptr_t)spl_image->entry_point);
148 * In case of failure in validation, spl_validate_uboot would
149 * not return back in case of Production environment with ITS=1.
150 * Thus U-Boot will not start.
151 * In Development environment (ITS=0 and SB_EN=1), the function
152 * may return back in case of non-fatal failures.
155 debug("image entry point: 0x%lX\n", spl_image->entry_point);
158 #endif /* ifdef CONFIG_SPL_FRAMEWORK */
159 #endif /* ifdef CONFIG_SPL_BUILD */