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powerpc/mpc85xx: SECURE BOOT- Enable chain of trust in SPL

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As part of Chain of Trust for Secure boot, the SPL U-Boot will validate
the next level U-boot image. Add a new function spl_validate_uboot to
perform the validation.

Enable hardware crypto operations in SPL using SEC block.
In case of Secure Boot, PAMU is not bypassed. For allowing SEC block
access to CPC configured as SRAM, configure PAMU.

Reviewed-by: Ruchika Gupta <ruchika.gupta@nxp.com>
Signed-off-by: Aneesh Bansal <aneesh.bansal@nxp.com>
Signed-off-by: Sumit Garg <sumit.garg@nxp.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: York Sun <york.sun@nxp.com>
This commit is contained in:
Sumit Garg
2016-07-14 12:27:51 -04:00
committed by York Sun
parent 63865278da
commit 8f01397ba7
7 changed files with 150 additions and 1 deletions
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56
board/freescale/common/fsl_chain_of_trust.c
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@@ -6,7 +6,17 @@
#include <common.h>
#include <fsl_validate.h>
#include <fsl_secboot_err.h>
#include <fsl_sfp.h>
#include <dm/root.h>
#ifdef CONFIG_ADDR_MAP
#include <asm/mmu.h>
#endif
#ifdef CONFIG_FSL_CORENET
#include <asm/fsl_pamu.h>
#endif
#ifdef CONFIG_LS102XA
#include <asm/arch/immap_ls102xa.h>
@@ -52,6 +62,7 @@ int fsl_check_boot_mode_secure(void)
return 0;
}
#ifndef CONFIG_SPL_BUILD
int fsl_setenv_chain_of_trust(void)
{
/* Check Boot Mode
@@ -68,3 +79,48 @@ int fsl_setenv_chain_of_trust(void)
setenv("bootcmd", CONFIG_CHAIN_BOOT_CMD);
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(false);
#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");
}
#endif /* ifdef CONFIG_SPL_BUILD */