mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-17 00:33:06 +00:00
3a543a8084
K3 devices have High Security (HS) variants along with the non-HS already supported. Like the previous generation devices (OMAP/Keystone2) K3 supports boot chain-of-trust by authenticating and optionally decrypting images as they are unpacked from FIT images. Add support for this here. Signed-off-by: Andrew F. Davis <afd@ti.com> Reviewed-by: Tom Rini <trini@konsulko.com> Reviewed-by: Andreas Dannenberg <dannenberg@ti.com>
63 lines
1.8 KiB
C
63 lines
1.8 KiB
C
// SPDX-License-Identifier: GPL-2.0
|
|
/*
|
|
* K3: Security functions
|
|
*
|
|
* Copyright (C) 2018 Texas Instruments Incorporated - http://www.ti.com/
|
|
* Andrew F. Davis <afd@ti.com>
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <dm.h>
|
|
#include <linux/soc/ti/ti_sci_protocol.h>
|
|
#include <mach/spl.h>
|
|
#include <spl.h>
|
|
|
|
void board_fit_image_post_process(void **p_image, size_t *p_size)
|
|
{
|
|
struct udevice *dev;
|
|
struct ti_sci_handle *ti_sci;
|
|
struct ti_sci_proc_ops *proc_ops;
|
|
u64 image_addr;
|
|
u32 image_size;
|
|
int ret;
|
|
|
|
/* Get handle to Device Management and Security Controller (SYSFW) */
|
|
ret = uclass_get_device_by_name(UCLASS_FIRMWARE, "dmsc", &dev);
|
|
if (ret) {
|
|
printf("Failed to get handle to SYSFW (%d)\n", ret);
|
|
hang();
|
|
}
|
|
ti_sci = (struct ti_sci_handle *)(ti_sci_get_handle_from_sysfw(dev));
|
|
proc_ops = &ti_sci->ops.proc_ops;
|
|
|
|
image_addr = (uintptr_t)*p_image;
|
|
|
|
debug("Authenticating image at address 0x%016llx\n", image_addr);
|
|
|
|
/* Authenticate image */
|
|
ret = proc_ops->proc_auth_boot_image(ti_sci, &image_addr, &image_size);
|
|
if (ret) {
|
|
printf("Authentication failed!\n");
|
|
hang();
|
|
}
|
|
|
|
/*
|
|
* The image_size returned may be 0 when the authentication process has
|
|
* moved the image. When this happens no further processing on the
|
|
* image is needed or often even possible as it may have also been
|
|
* placed behind a firewall when moved.
|
|
*/
|
|
*p_size = image_size;
|
|
|
|
/*
|
|
* Output notification of successful authentication to re-assure the
|
|
* user that the secure code is being processed as expected. However
|
|
* suppress any such log output in case of building for SPL and booting
|
|
* via YMODEM. This is done to avoid disturbing the YMODEM serial
|
|
* protocol transactions.
|
|
*/
|
|
if (!(IS_ENABLED(CONFIG_SPL_BUILD) &&
|
|
IS_ENABLED(CONFIG_SPL_YMODEM_SUPPORT) &&
|
|
spl_boot_device() == BOOT_DEVICE_UART))
|
|
printf("Authentication passed\n");
|
|
}
|