1 // SPDX-License-Identifier: GPL-2.0+
3 * Copyright 2015 Freescale Semiconductor, Inc.
9 #include <fsl_validate.h>
10 #include <fsl_secboot_err.h>
15 #if defined(CONFIG_SPL_BUILD) && defined(CONFIG_SPL_FRAMEWORK)
19 #ifdef CONFIG_ADDR_MAP
23 #ifdef CONFIG_FSL_CORENET
24 #include <asm/fsl_pamu.h>
27 #ifdef CONFIG_ARCH_LS1021A
28 #include <asm/arch/immap_ls102xa.h>
31 #if defined(CONFIG_MPC85xx)
32 #define CONFIG_DCFG_ADDR CONFIG_SYS_MPC85xx_GUTS_ADDR
34 #define CONFIG_DCFG_ADDR CONFIG_SYS_FSL_GUTS_ADDR
37 #ifdef CONFIG_SYS_FSL_CCSR_GUR_LE
38 #define gur_in32(a) in_le32(a)
40 #define gur_in32(a) in_be32(a)
43 /* Check the Boot Mode. If Secure, return 1 else return 0 */
44 int fsl_check_boot_mode_secure(void)
47 struct ccsr_sfp_regs *sfp_regs = (void *)(CONFIG_SYS_SFP_ADDR);
48 struct ccsr_gur __iomem *gur = (void *)(CONFIG_DCFG_ADDR);
50 val = sfp_in32(&sfp_regs->ospr) & ITS_MASK;
54 #if defined(CONFIG_FSL_CORENET) || !defined(CONFIG_MPC85xx)
55 /* For PBL based platforms check the SB_EN bit in RCWSR */
56 val = gur_in32(&gur->rcwsr[RCW_SB_EN_REG_INDEX - 1]) & RCW_SB_EN_MASK;
57 if (val == RCW_SB_EN_MASK)
61 #if defined(CONFIG_MPC85xx) && !defined(CONFIG_FSL_CORENET)
62 /* For Non-PBL Platforms, check the Device Status register 2*/
63 val = gur_in32(&gur->pordevsr2) & MPC85xx_PORDEVSR2_SBC_MASK;
64 if (val != MPC85xx_PORDEVSR2_SBC_MASK)
71 #ifndef CONFIG_SPL_BUILD
72 int fsl_setenv_chain_of_trust(void)
75 * If Boot Mode is Non-Secure, no changes are required
77 if (fsl_check_boot_mode_secure() == 0)
80 /* If Boot mode is Secure, set the environment variables
81 * bootdelay = 0 (To disable Boot Prompt)
82 * bootcmd = CONFIG_CHAIN_BOOT_CMD (Validate and execute Boot script)
84 env_set("bootdelay", "-2");
87 env_set("secureboot", "y");
89 env_set("bootcmd", CONFIG_CHAIN_BOOT_CMD);
96 #ifdef CONFIG_SPL_BUILD
97 void spl_validate_uboot(uint32_t hdr_addr, uintptr_t img_addr)
103 * If Boot Mode is Non-Secure, skip validation
105 if (fsl_check_boot_mode_secure() == 0)
108 printf("SPL: Validating U-Boot image\n");
110 #ifdef CONFIG_ADDR_MAP
114 #ifdef CONFIG_FSL_CORENET
116 fsl_secboot_handle_error(ERROR_ESBC_PAMU_INIT);
119 #ifdef CONFIG_FSL_CAAM
121 fsl_secboot_handle_error(ERROR_ESBC_SEC_INIT);
125 * dm_init_and_scan() is called as part of common SPL framework, so no
126 * need to call it again but in case of powerpc platforms which currently
127 * do not use common SPL framework, so need to call this function here.
129 #if defined(CONFIG_SPL_DM) && (!defined(CONFIG_SPL_FRAMEWORK))
130 dm_init_and_scan(true);
132 res = fsl_secboot_validate(hdr_addr, CONFIG_SPL_UBOOT_KEY_HASH,
136 printf("SPL: Validation of U-boot successful\n");
139 #ifdef CONFIG_SPL_FRAMEWORK
140 /* Override weak funtion defined in SPL framework to enable validation
141 * of main u-boot image before jumping to u-boot image.
143 void __noreturn jump_to_image_no_args(struct spl_image_info *spl_image)
145 typedef void __noreturn (*image_entry_noargs_t)(void);
148 image_entry_noargs_t image_entry =
149 (image_entry_noargs_t)(unsigned long)spl_image->entry_point;
151 hdr_addr = (spl_image->entry_point + spl_image->size -
152 CONFIG_U_BOOT_HDR_SIZE);
153 spl_validate_uboot(hdr_addr, (uintptr_t)spl_image->entry_point);
155 * In case of failure in validation, spl_validate_uboot would
156 * not return back in case of Production environment with ITS=1.
157 * Thus U-Boot will not start.
158 * In Development environment (ITS=0 and SB_EN=1), the function
159 * may return back in case of non-fatal failures.
162 debug("image entry point: 0x%lX\n", spl_image->entry_point);
165 #endif /* ifdef CONFIG_SPL_FRAMEWORK */
166 #endif /* ifdef CONFIG_SPL_BUILD */