mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-04 18:41:03 +00:00
166 lines
4.1 KiB
C
166 lines
4.1 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* Copyright 2015 Freescale Semiconductor, Inc.
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <dm.h>
|
|
#include <env.h>
|
|
#include <fsl_validate.h>
|
|
#include <fsl_secboot_err.h>
|
|
#include <fsl_sfp.h>
|
|
#include <log.h>
|
|
#include <dm/root.h>
|
|
|
|
#if defined(CONFIG_SPL_BUILD) && defined(CONFIG_SPL_FRAMEWORK)
|
|
#include <spl.h>
|
|
#endif
|
|
|
|
#ifdef CONFIG_ADDR_MAP
|
|
#include <asm/mmu.h>
|
|
#endif
|
|
|
|
#ifdef CONFIG_FSL_CORENET
|
|
#include <asm/fsl_pamu.h>
|
|
#endif
|
|
|
|
#ifdef CONFIG_ARCH_LS1021A
|
|
#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;
|
|
}
|
|
|
|
#ifndef CONFIG_SPL_BUILD
|
|
int fsl_setenv_chain_of_trust(void)
|
|
{
|
|
/* Check Boot Mode
|
|
* If Boot Mode is Non-Secure, no changes are required
|
|
*/
|
|
if (fsl_check_boot_mode_secure() == 0)
|
|
return 0;
|
|
|
|
/* If Boot mode is Secure, set the environment variables
|
|
* bootdelay = 0 (To disable Boot Prompt)
|
|
* bootcmd = CONFIG_CHAIN_BOOT_CMD (Validate and execute Boot script)
|
|
*/
|
|
env_set("bootdelay", "-2");
|
|
|
|
#ifdef CONFIG_ARM
|
|
env_set("secureboot", "y");
|
|
#else
|
|
env_set("bootcmd", CONFIG_CHAIN_BOOT_CMD);
|
|
#endif
|
|
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
#ifdef CONFIG_SPL_BUILD
|
|
void spl_validate_uboot(uint32_t hdr_addr, uintptr_t img_addr)
|
|
{
|
|
int res;
|
|
|
|
/*
|
|
* Check Boot Mode
|
|
* If Boot Mode is Non-Secure, skip validation
|
|
*/
|
|
if (fsl_check_boot_mode_secure() == 0)
|
|
return;
|
|
|
|
printf("SPL: Validating U-Boot image\n");
|
|
|
|
#ifdef CONFIG_ADDR_MAP
|
|
init_addr_map();
|
|
#endif
|
|
|
|
#ifdef CONFIG_FSL_CORENET
|
|
if (pamu_init() < 0)
|
|
fsl_secboot_handle_error(ERROR_ESBC_PAMU_INIT);
|
|
#endif
|
|
|
|
#ifdef CONFIG_FSL_CAAM
|
|
if (sec_init() < 0)
|
|
fsl_secboot_handle_error(ERROR_ESBC_SEC_INIT);
|
|
#endif
|
|
|
|
/*
|
|
* dm_init_and_scan() is called as part of common SPL framework, so no
|
|
* need to call it again but in case of powerpc platforms which currently
|
|
* do not use common SPL framework, so need to call this function here.
|
|
*/
|
|
#if defined(CONFIG_SPL_DM) && (!defined(CONFIG_SPL_FRAMEWORK))
|
|
dm_init_and_scan(true);
|
|
#endif
|
|
res = fsl_secboot_validate(hdr_addr, CONFIG_SPL_UBOOT_KEY_HASH,
|
|
&img_addr);
|
|
|
|
if (res == 0)
|
|
printf("SPL: Validation of U-boot successful\n");
|
|
}
|
|
|
|
#ifdef CONFIG_SPL_FRAMEWORK
|
|
/* Override weak funtion defined in SPL framework to enable validation
|
|
* of main u-boot image before jumping to u-boot image.
|
|
*/
|
|
void __noreturn jump_to_image_no_args(struct spl_image_info *spl_image)
|
|
{
|
|
typedef void __noreturn (*image_entry_noargs_t)(void);
|
|
uint32_t hdr_addr;
|
|
|
|
image_entry_noargs_t image_entry =
|
|
(image_entry_noargs_t)(unsigned long)spl_image->entry_point;
|
|
|
|
hdr_addr = (spl_image->entry_point + spl_image->size -
|
|
CONFIG_U_BOOT_HDR_SIZE);
|
|
spl_validate_uboot(hdr_addr, (uintptr_t)spl_image->entry_point);
|
|
/*
|
|
* In case of failure in validation, spl_validate_uboot would
|
|
* not return back in case of Production environment with ITS=1.
|
|
* Thus U-Boot will not start.
|
|
* In Development environment (ITS=0 and SB_EN=1), the function
|
|
* may return back in case of non-fatal failures.
|
|
*/
|
|
|
|
debug("image entry point: 0x%lX\n", spl_image->entry_point);
|
|
image_entry();
|
|
}
|
|
#endif /* ifdef CONFIG_SPL_FRAMEWORK */
|
|
#endif /* ifdef CONFIG_SPL_BUILD */
|