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