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106 lines
2.8 KiB
106 lines
2.8 KiB
// SPDX-License-Identifier: GPL-2.0+ |
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/* |
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* (C) Copyright 2015 Google, Inc |
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* Written by Simon Glass <[email protected]> |
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* |
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* See README.rockchip for details of the rkspi format |
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*/ |
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#include "imagetool.h" |
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#include <image.h> |
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#include <rc4.h> |
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#include "mkimage.h" |
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#include "rkcommon.h" |
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enum { |
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RKSPI_SECT_LEN = RK_BLK_SIZE * 4, |
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}; |
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static void rkspi_set_header(void *buf, struct stat *sbuf, int ifd, |
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struct image_tool_params *params) |
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{ |
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int sector; |
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unsigned int size; |
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int ret; |
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size = params->orig_file_size; |
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ret = rkcommon_set_header(buf, size, params); |
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debug("size %x\n", size); |
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if (ret) { |
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/* TODO([email protected]): This method should return an error */ |
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printf("Warning: SPL image is too large (size %#x) and will " |
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"not boot\n", size); |
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} |
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/* |
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* Spread the image out so we only use the first 2KB of each 4KB |
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* region. This is a feature of the SPI format required by the Rockchip |
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* boot ROM. Its rationale is unknown. |
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*/ |
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for (sector = size / RKSPI_SECT_LEN - 1; sector >= 0; sector--) { |
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debug("sector %u\n", sector); |
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memmove(buf + sector * RKSPI_SECT_LEN * 2, |
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buf + sector * RKSPI_SECT_LEN, |
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RKSPI_SECT_LEN); |
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memset(buf + sector * RKSPI_SECT_LEN * 2 + RKSPI_SECT_LEN, |
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'\0', RKSPI_SECT_LEN); |
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} |
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} |
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static int rkspi_check_image_type(uint8_t type) |
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{ |
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if (type == IH_TYPE_RKSPI) |
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return EXIT_SUCCESS; |
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else |
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return EXIT_FAILURE; |
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} |
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/* |
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* The SPI payload needs to be padded out to make space for odd half-sector |
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* layout used in flash (i.e. only the first 2K of each 4K sector is used). |
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*/ |
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static int rkspi_vrec_header(struct image_tool_params *params, |
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struct image_type_params *tparams) |
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{ |
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int padding = rkcommon_vrec_header(params, tparams, RK_INIT_SIZE_ALIGN); |
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/* |
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* The file size has not been adjusted at this point (our caller will |
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* eventually add the header/padding to the file_size), so we need to |
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* add up the header_size, file_size and padding ourselves. |
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*/ |
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int padded_size = tparams->header_size + params->file_size + padding; |
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/* |
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* We need to store the original file-size (i.e. before padding), as |
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* imagetool does not set this during its adjustment of file_size. |
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*/ |
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params->orig_file_size = padded_size; |
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/* |
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* Converting to the SPI format (i.e. splitting each 4K page into two |
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* 2K subpages and then padding these 2K pages up to take a complete |
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* 4K sector again) will will double the image size. |
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* |
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* Thus we return the padded_size as an additional padding requirement |
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* (be sure to add this to the padding returned from the common code). |
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*/ |
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return padded_size + padding; |
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} |
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/* |
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* rk_spi parameters |
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*/ |
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U_BOOT_IMAGE_TYPE( |
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rkspi, |
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"Rockchip SPI Boot Image support", |
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0, |
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NULL, |
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rkcommon_check_params, |
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rkcommon_verify_header, |
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rkcommon_print_header, |
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rkspi_set_header, |
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NULL, |
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rkspi_check_image_type, |
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NULL, |
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rkspi_vrec_header |
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);
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