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https://github.com/brain-hackers/u-boot-brain
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3082775692
To simplify the creation of AArch64 SPL images for the RK3399, we use the ENABLE_ARM_SOC_BOOT0_HOOK option and prepend 4 bytes of padding at the start of the text section. This makes it easy for mkimage to rewrite this word with the 'RK33' boot magic. This change brings logic to calculate the header size and allocate the header back in sync. For the RK3399 we now limit the header to before the payload (i.e. the 'header0' and the padding up to the actual image) and overwrite the first word (inserted by the boot0-hook for this purpose) with the 'RK33' magic in-place. X-AffectedPlatforms: RK3399-Q7 Signed-off-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com> Tested-by: Klaus Goger <klaus.goger@theobroma-systems.com>
91 lines
2.7 KiB
C
91 lines
2.7 KiB
C
/*
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* (C) Copyright 2015 Google, Inc
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* Written by Simon Glass <sjg@chromium.org>
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#ifndef _RKCOMMON_H
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#define _RKCOMMON_H
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enum {
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RK_BLK_SIZE = 512,
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RK_INIT_OFFSET = 4,
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RK_MAX_BOOT_SIZE = 512 << 10,
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RK_SPL_HDR_START = RK_INIT_OFFSET * RK_BLK_SIZE,
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RK_SPL_HDR_SIZE = 4,
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RK_SPL_START = RK_SPL_HDR_START + RK_SPL_HDR_SIZE,
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RK_IMAGE_HEADER_LEN = RK_SPL_START,
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};
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/**
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* rkcommon_check_params() - check params
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*
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* @return 0 if OK, -1 if ERROR.
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*/
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int rkcommon_check_params(struct image_tool_params *params);
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/**
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* rkcommon_get_spl_hdr() - get 4-bytes spl hdr for a Rockchip boot image
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*
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* Rockchip's bootrom requires the spl loader to start with a 4-bytes
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* header. The content of this header depends on the chip type.
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*/
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const char *rkcommon_get_spl_hdr(struct image_tool_params *params);
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/**
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* rkcommon_get_spl_size() - get spl size for a Rockchip boot image
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*
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* Different chip may have different sram size. And if we want to jump
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* back to the bootrom after spl, we may need to reserve some sram space
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* for the bootrom.
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* The spl loader size should be sram size minus reserved size(if needed)
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*/
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int rkcommon_get_spl_size(struct image_tool_params *params);
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/**
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* rkcommon_set_header() - set up the header for a Rockchip boot image
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*
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* This sets up a 2KB header which can be interpreted by the Rockchip boot ROM.
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*
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* @buf: Pointer to header place (must be at least 2KB in size)
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* @file_size: Size of the file we want the boot ROM to load, in bytes
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* @return 0 if OK, -ENOSPC if too large
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*/
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int rkcommon_set_header(void *buf, uint file_size,
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struct image_tool_params *params);
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/**
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* rkcommon_need_rc4_spl() - check if rc4 encoded spl is required
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*
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* Some socs cannot disable the rc4-encryption of the spl binary.
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* rc4 encryption is disabled normally except on socs that cannot
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* handle unencrypted binaries.
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* @return true or false depending on rc4 being required.
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*/
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bool rkcommon_need_rc4_spl(struct image_tool_params *params);
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/**
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* rkcommon_rc4_encode_spl() - encode the spl binary
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*
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* Encrypts the SPL binary using the generic rc4 key as required
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* by some socs.
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*
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* @buf: Pointer to the SPL data (header and SPL binary)
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* @offset: offset inside buf to start at
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* @size: number of bytes to encode
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*/
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void rkcommon_rc4_encode_spl(void *buf, unsigned int offset, unsigned int size);
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/**
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* rkcommon_vrec_header() - allocate memory for the header
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*
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* @params: Pointer to the tool params structure
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* @tparams: Pointer tot the image type structure (for setting
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* the header and header_size)
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*/
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void rkcommon_vrec_header(struct image_tool_params *params,
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struct image_type_params *tparams);
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#endif
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