mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-05 02:51:00 +00:00
83d290c56f
When U-Boot started using SPDX tags we were among the early adopters and there weren't a lot of other examples to borrow from. So we picked the area of the file that usually had a full license text and replaced it with an appropriate SPDX-License-Identifier: entry. Since then, the Linux Kernel has adopted SPDX tags and they place it as the very first line in a file (except where shebangs are used, then it's second line) and with slightly different comment styles than us. In part due to community overlap, in part due to better tag visibility and in part for other minor reasons, switch over to that style. This commit changes all instances where we have a single declared license in the tag as both the before and after are identical in tag contents. There's also a few places where I found we did not have a tag and have introduced one. Signed-off-by: Tom Rini <trini@konsulko.com>
163 lines
4.2 KiB
C
163 lines
4.2 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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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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#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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