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