tools: mkimage: add support for Vybrid image format
This format can be flashed directly at address 0 of the NAND FLASH, as it contains all necessary headers. Signed-off-by: Albert ARIBAUD (3ADEV) <albert.aribaud@3adev.fr>
This commit is contained in:
Albert ARIBAUD \(3ADEV\)
committed by
Stefano Babic
Stefano Babic
parent
303a24435f
commit
ed0c2c0a9e
@@ -0,0 +1,164 @@
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/*
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* Image manipulator for Vybrid SoCs
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*
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* Derived from vybridimage.c
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*
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* (C) Copyright 2016 DENX Software Engineering GmbH
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* Written-by: Albert ARIBAUD <albert.aribaud@3adev.fr>
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#include "imagetool.h"
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#include <compiler.h>
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#include <image.h>
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/*
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* NAND page 0 boot header
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*/
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struct nand_page_0_boot_header {
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union {
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uint32_t fcb[128];
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uint8_t fcb_bytes[512];
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}; /* 0x00000000 - 0x000001ff */
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uint8_t sw_ecc[512]; /* 0x00000200 - 0x000003ff */
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uint32_t padding[65280]; /* 0x00000400 - 0x0003ffff */
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uint8_t ivt_prefix[1024]; /* 0x00040000 - 0x000403ff */
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};
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/* signature byte for a readable block */
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static struct nand_page_0_boot_header vybridimage_header;
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static int vybridimage_check_image_types(uint8_t type)
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{
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if (type == IH_TYPE_VYBRIDIMAGE)
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return EXIT_SUCCESS;
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return EXIT_FAILURE;
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}
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static uint8_t vybridimage_sw_ecc(uint8_t byte)
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{
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uint8_t bit0 = (byte & (1 << 0)) ? 1 : 0;
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uint8_t bit1 = (byte & (1 << 1)) ? 1 : 0;
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uint8_t bit2 = (byte & (1 << 2)) ? 1 : 0;
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uint8_t bit3 = (byte & (1 << 3)) ? 1 : 0;
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uint8_t bit4 = (byte & (1 << 4)) ? 1 : 0;
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uint8_t bit5 = (byte & (1 << 5)) ? 1 : 0;
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uint8_t bit6 = (byte & (1 << 6)) ? 1 : 0;
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uint8_t bit7 = (byte & (1 << 7)) ? 1 : 0;
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uint8_t res = 0;
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res |= ((bit6 ^ bit5 ^ bit3 ^ bit2) << 0);
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res |= ((bit7 ^ bit5 ^ bit4 ^ bit2 ^ bit1) << 1);
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res |= ((bit7 ^ bit6 ^ bit5 ^ bit1 ^ bit0) << 2);
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res |= ((bit7 ^ bit4 ^ bit3 ^ bit0) << 3);
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res |= ((bit6 ^ bit4 ^ bit3 ^ bit2 ^ bit1 ^ bit0) << 4);
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return res;
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}
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static int vybridimage_verify_header(unsigned char *ptr, int image_size,
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struct image_tool_params *params)
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{
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struct nand_page_0_boot_header *hdr =
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(struct nand_page_0_boot_header *)ptr;
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int idx;
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if (hdr->fcb[1] != 0x46434220)
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return -1;
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if (hdr->fcb[2] != 1)
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return -1;
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if (hdr->fcb[7] != 64)
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return -1;
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if (hdr->fcb[14] != 6)
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return -1;
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if (hdr->fcb[30] != 0x0001ff00)
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return -1;
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if (hdr->fcb[43] != 1)
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return -1;
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if (hdr->fcb[54] != 0)
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return -1;
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if (hdr->fcb[55] != 8)
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return -1;
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/* check software ECC */
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for (idx = 0; idx < sizeof(hdr->fcb_bytes); idx++) {
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uint8_t sw_ecc = vybridimage_sw_ecc(hdr->fcb_bytes[idx]);
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if (sw_ecc != hdr->sw_ecc[idx])
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return -1;
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}
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return 0;
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}
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static void vybridimage_set_header(void *ptr, struct stat *sbuf, int ifd,
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struct image_tool_params *params)
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{
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struct nand_page_0_boot_header *hdr =
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(struct nand_page_0_boot_header *)ptr;
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int idx;
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/* fill header with 0x00 for first 56 entries then 0xff */
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memset(&hdr->fcb[0], 0x0, 56*sizeof(uint32_t));
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memset(&hdr->fcb[56], 0xff, 72*sizeof(uint32_t));
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/* fill SW ecc and padding with 0xff */
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memset(&hdr->sw_ecc[0], 0xff, sizeof(hdr->sw_ecc));
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memset(&hdr->padding[0], 0xff, sizeof(hdr->padding));
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/* fill IVT prefix with 0x00 */
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memset(&hdr->ivt_prefix[0], 0x00, sizeof(hdr->ivt_prefix));
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/* populate fcb */
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hdr->fcb[1] = 0x46434220; /* signature */
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hdr->fcb[2] = 0x00000001; /* version */
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hdr->fcb[5] = 2048; /* page size */
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hdr->fcb[6] = (2048+64); /* page + OOB size */
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hdr->fcb[7] = 64; /* pages per block */
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hdr->fcb[14] = 6; /* ECC mode 6 */
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hdr->fcb[26] = 128; /* fw address (0x40000) in 2K pages */
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hdr->fcb[27] = 128; /* fw address (0x40000) in 2K pages */
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hdr->fcb[30] = 0x0001ff00; /* DBBT search area start address */
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hdr->fcb[33] = 2048; /* BB marker physical offset */
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hdr->fcb[43] = 1; /* DISBBM */
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hdr->fcb[54] = 0; /* DISBB_Search */
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hdr->fcb[55] = 8; /* Bad block search limit */
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/* compute software ECC */
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for (idx = 0; idx < sizeof(hdr->fcb_bytes); idx++)
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hdr->sw_ecc[idx] = vybridimage_sw_ecc(hdr->fcb_bytes[idx]);
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}
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static void vybridimage_print_hdr_field(struct nand_page_0_boot_header *hdr,
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int idx)
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{
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printf("header.fcb[%d] = %08x\n", idx, hdr->fcb[idx]);
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}
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static void vybridimage_print_header(const void *ptr)
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{
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struct nand_page_0_boot_header *hdr =
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(struct nand_page_0_boot_header *)ptr;
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int idx;
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for (idx = 0; idx < 56; idx++)
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vybridimage_print_hdr_field(hdr, idx);
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}
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/*
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* vybridimage parameters
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*/
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U_BOOT_IMAGE_TYPE(
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vybridimage,
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"Vybrid Boot Image",
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sizeof(vybridimage_header),
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(void *)&vybridimage_header,
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NULL,
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vybridimage_verify_header,
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vybridimage_print_header,
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vybridimage_set_header,
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NULL,
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vybridimage_check_image_types,
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NULL,
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NULL
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);
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