mirror of
https://github.com/ARM-software/arm-trusted-firmware.git
synced 2025-05-03 17:38:39 +00:00
77850c96f2
In case JR0 is used by the HAB for secure boot, it can be used later for authenticating kernel or other binaries. We are checking if the HAB is using the JR by the DID set. Signed-off-by: Franck LENORMAND <franck.lenormand@nxp.com> Signed-off-by: Jacky Bai <ping.bai@nxp.com> Change-Id: I6e9595012262ffabfc3f3d4841f446f34e48e059
48 lines
1.2 KiB
C
48 lines
1.2 KiB
C
/*
|
|
* Copyright (c) 2019-2022 NXP. All rights reserved.
|
|
*
|
|
* SPDX-License-Identifier: BSD-3-Clause
|
|
*/
|
|
|
|
#include <common/debug.h>
|
|
#include <lib/mmio.h>
|
|
|
|
#include <imx8m_caam.h>
|
|
|
|
#define HAB_JR0_DID U(0x8011)
|
|
|
|
void imx8m_caam_init(void)
|
|
{
|
|
uint32_t sm_cmd;
|
|
|
|
/* Dealloc part 0 and 2 with current DID */
|
|
sm_cmd = (0 << SMC_PART_SHIFT | SMC_CMD_DEALLOC_PART);
|
|
mmio_write_32(SM_CMD, sm_cmd);
|
|
|
|
sm_cmd = (2 << SMC_PART_SHIFT | SMC_CMD_DEALLOC_PART);
|
|
mmio_write_32(SM_CMD, sm_cmd);
|
|
|
|
/* config CAAM JRaMID set MID to Cortex A */
|
|
if (mmio_read_32(CAAM_JR0MID) == HAB_JR0_DID) {
|
|
NOTICE("Do not release JR0 to NS as it can be used by HAB");
|
|
} else {
|
|
mmio_write_32(CAAM_JR0MID, CAAM_NS_MID);
|
|
}
|
|
|
|
mmio_write_32(CAAM_JR1MID, CAAM_NS_MID);
|
|
mmio_write_32(CAAM_JR2MID, CAAM_NS_MID);
|
|
|
|
/* Alloc partition 0 writing SMPO and SMAGs */
|
|
mmio_write_32(SM_P0_PERM, 0xff);
|
|
mmio_write_32(SM_P0_SMAG2, 0xffffffff);
|
|
mmio_write_32(SM_P0_SMAG1, 0xffffffff);
|
|
|
|
/* Allocate page 0 and 1 to partition 0 with DID set */
|
|
sm_cmd = (0 << SMC_PAGE_SHIFT | 0 << SMC_PART_SHIFT |
|
|
SMC_CMD_ALLOC_PAGE);
|
|
mmio_write_32(SM_CMD, sm_cmd);
|
|
|
|
sm_cmd = (1 << SMC_PAGE_SHIFT | 0 << SMC_PART_SHIFT |
|
|
SMC_CMD_ALLOC_PAGE);
|
|
mmio_write_32(SM_CMD, sm_cmd);
|
|
}
|