mirror of
https://github.com/AsahiLinux/u-boot
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70 lines
2 KiB
C
70 lines
2 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* K3: Security functions
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*
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* Copyright (C) 2018 Texas Instruments Incorporated - http://www.ti.com/
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* Andrew F. Davis <afd@ti.com>
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*/
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#include <common.h>
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#include <cpu_func.h>
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#include <dm.h>
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#include <hang.h>
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#include <image.h>
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#include <log.h>
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#include <asm/cache.h>
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#include <linux/soc/ti/ti_sci_protocol.h>
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#include <mach/spl.h>
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#include <spl.h>
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#include <asm/arch/sys_proto.h>
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void board_fit_image_post_process(void **p_image, size_t *p_size)
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{
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struct ti_sci_handle *ti_sci = get_ti_sci_handle();
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struct ti_sci_proc_ops *proc_ops = &ti_sci->ops.proc_ops;
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u64 image_addr;
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u32 image_size;
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int ret;
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image_addr = (uintptr_t)*p_image;
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image_size = *p_size;
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debug("Authenticating image at address 0x%016llx\n", image_addr);
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debug("Authenticating image of size %d bytes\n", image_size);
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flush_dcache_range((unsigned long)image_addr,
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ALIGN((unsigned long)image_addr + image_size,
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ARCH_DMA_MINALIGN));
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/* Authenticate image */
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ret = proc_ops->proc_auth_boot_image(ti_sci, &image_addr, &image_size);
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if (ret) {
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printf("Authentication failed!\n");
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hang();
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}
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if (image_size)
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invalidate_dcache_range((unsigned long)image_addr,
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ALIGN((unsigned long)image_addr +
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image_size, ARCH_DMA_MINALIGN));
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/*
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* The image_size returned may be 0 when the authentication process has
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* moved the image. When this happens no further processing on the
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* image is needed or often even possible as it may have also been
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* placed behind a firewall when moved.
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*/
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*p_size = image_size;
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/*
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* Output notification of successful authentication to re-assure the
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* user that the secure code is being processed as expected. However
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* suppress any such log output in case of building for SPL and booting
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* via YMODEM. This is done to avoid disturbing the YMODEM serial
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* protocol transactions.
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*/
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if (!(IS_ENABLED(CONFIG_SPL_BUILD) &&
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IS_ENABLED(CONFIG_SPL_YMODEM_SUPPORT) &&
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spl_boot_device() == BOOT_DEVICE_UART))
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printf("Authentication passed\n");
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}
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