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303 lines
8.1 KiB
303 lines
8.1 KiB
// SPDX-License-Identifier: GPL-2.0+ |
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/* |
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* Copyright (C) 2015 Nathan Rossi <[email protected]> |
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* |
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* The following Boot Header format/structures and values are defined in the |
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* following documents: |
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* * Xilinx Zynq-7000 Technical Reference Manual (Section 6.3) |
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* * Xilinx Zynq-7000 Software Developers Guide (Appendix A.7 and A.8) |
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* |
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* Expected Header Size = 0x8C0 |
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* Forced as 'little' endian, 32-bit words |
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* |
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* 0x 0 - Interrupt Table (8 words) |
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* ... (Default value = 0xeafffffe) |
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* 0x 1f |
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* 0x 20 - Width Detection |
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* * DEFAULT_WIDTHDETECTION 0xaa995566 |
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* 0x 24 - Image Identifier |
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* * DEFAULT_IMAGEIDENTIFIER 0x584c4e58 |
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* 0x 28 - Encryption |
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* * 0x00000000 - None |
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* * 0xa5c3c5a3 - eFuse |
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* * 0x3a5c3c5a - bbRam |
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* 0x 2C - User Field |
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* 0x 30 - Image Offset |
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* 0x 34 - Image Size |
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* 0x 38 - Reserved (0x00000000) (according to spec) |
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* * FSBL defines this field for Image Destination Address. |
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* 0x 3C - Image Load |
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* 0x 40 - Image Stored Size |
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* 0x 44 - Reserved (0x00000000) (according to spec) |
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* * FSBL defines this field for QSPI configuration Data. |
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* 0x 48 - Checksum |
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* 0x 4c - Unused (21 words) |
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* ... |
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* 0x 9c |
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* 0x a0 - Register Initialization, 256 Address and Data word pairs |
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* * List is terminated with an address of 0xffffffff or |
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* ... * at the max number of entries |
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* 0x89c |
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* 0x8a0 - Unused (8 words) |
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* ... |
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* 0x8bf |
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* 0x8c0 - Data/Image starts here or above |
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*/ |
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#include "imagetool.h" |
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#include "mkimage.h" |
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#include <image.h> |
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#define HEADER_INTERRUPT_DEFAULT (cpu_to_le32(0xeafffffe)) |
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#define HEADER_REGINIT_NULL (cpu_to_le32(0xffffffff)) |
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#define HEADER_WIDTHDETECTION (cpu_to_le32(0xaa995566)) |
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#define HEADER_IMAGEIDENTIFIER (cpu_to_le32(0x584c4e58)) |
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enum { |
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ENCRYPTION_EFUSE = 0xa5c3c5a3, |
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ENCRYPTION_BBRAM = 0x3a5c3c5a, |
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ENCRYPTION_NONE = 0x0, |
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}; |
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struct zynq_reginit { |
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uint32_t address; |
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uint32_t data; |
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}; |
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#define HEADER_INTERRUPT_VECTORS 8 |
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#define HEADER_REGINITS 256 |
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struct zynq_header { |
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uint32_t interrupt_vectors[HEADER_INTERRUPT_VECTORS]; /* 0x0 */ |
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uint32_t width_detection; /* 0x20 */ |
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uint32_t image_identifier; /* 0x24 */ |
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uint32_t encryption; /* 0x28 */ |
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uint32_t user_field; /* 0x2c */ |
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uint32_t image_offset; /* 0x30 */ |
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uint32_t image_size; /* 0x34 */ |
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uint32_t __reserved1; /* 0x38 */ |
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uint32_t image_load; /* 0x3c */ |
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uint32_t image_stored_size; /* 0x40 */ |
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uint32_t __reserved2; /* 0x44 */ |
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uint32_t checksum; /* 0x48 */ |
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uint32_t __reserved3[21]; /* 0x4c */ |
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struct zynq_reginit register_init[HEADER_REGINITS]; /* 0xa0 */ |
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uint32_t __reserved4[8]; /* 0x8a0 */ |
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}; |
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static struct zynq_header zynqimage_header; |
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static uint32_t zynqimage_checksum(struct zynq_header *ptr) |
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{ |
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uint32_t checksum = 0; |
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if (ptr == NULL) |
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return 0; |
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checksum += le32_to_cpu(ptr->width_detection); |
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checksum += le32_to_cpu(ptr->image_identifier); |
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checksum += le32_to_cpu(ptr->encryption); |
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checksum += le32_to_cpu(ptr->user_field); |
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checksum += le32_to_cpu(ptr->image_offset); |
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checksum += le32_to_cpu(ptr->image_size); |
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checksum += le32_to_cpu(ptr->__reserved1); |
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checksum += le32_to_cpu(ptr->image_load); |
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checksum += le32_to_cpu(ptr->image_stored_size); |
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checksum += le32_to_cpu(ptr->__reserved2); |
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checksum = ~checksum; |
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return cpu_to_le32(checksum); |
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} |
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static void zynqimage_default_header(struct zynq_header *ptr) |
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{ |
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int i; |
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if (ptr == NULL) |
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return; |
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ptr->width_detection = HEADER_WIDTHDETECTION; |
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ptr->image_identifier = HEADER_IMAGEIDENTIFIER; |
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ptr->encryption = cpu_to_le32(ENCRYPTION_NONE); |
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/* Setup not-supported/constant/reserved fields */ |
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for (i = 0; i < HEADER_INTERRUPT_VECTORS; i++) |
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ptr->interrupt_vectors[i] = HEADER_INTERRUPT_DEFAULT; |
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for (i = 0; i < HEADER_REGINITS; i++) { |
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ptr->register_init[i].address = HEADER_REGINIT_NULL; |
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ptr->register_init[i].data = HEADER_REGINIT_NULL; |
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} |
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/* |
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* Certain reserved fields are required to be set to 0, ensure they are |
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* set as such. |
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*/ |
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ptr->__reserved1 = 0x0; |
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ptr->__reserved2 = 0x0; |
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} |
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/* mkimage glue functions */ |
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static int zynqimage_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 zynq_header *zynqhdr = (struct zynq_header *)ptr; |
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if (image_size < sizeof(struct zynq_header)) |
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return -1; |
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if (zynqhdr->__reserved1 != 0) |
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return -1; |
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if (zynqhdr->__reserved2 != 0) |
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return -1; |
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if (zynqhdr->width_detection != HEADER_WIDTHDETECTION) |
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return -1; |
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if (zynqhdr->image_identifier != HEADER_IMAGEIDENTIFIER) |
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return -1; |
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if (zynqimage_checksum(zynqhdr) != zynqhdr->checksum) |
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return -1; |
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return 0; |
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} |
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static void zynqimage_print_header(const void *ptr) |
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{ |
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struct zynq_header *zynqhdr = (struct zynq_header *)ptr; |
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int i; |
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printf("Image Type : Xilinx Zynq Boot Image support\n"); |
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printf("Image Offset : 0x%08x\n", le32_to_cpu(zynqhdr->image_offset)); |
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printf("Image Size : %lu bytes (%lu bytes packed)\n", |
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(unsigned long)le32_to_cpu(zynqhdr->image_size), |
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(unsigned long)le32_to_cpu(zynqhdr->image_stored_size)); |
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printf("Image Load : 0x%08x\n", le32_to_cpu(zynqhdr->image_load)); |
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printf("User Field : 0x%08x\n", le32_to_cpu(zynqhdr->user_field)); |
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printf("Checksum : 0x%08x\n", le32_to_cpu(zynqhdr->checksum)); |
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for (i = 0; i < HEADER_INTERRUPT_VECTORS; i++) { |
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if (zynqhdr->interrupt_vectors[i] == HEADER_INTERRUPT_DEFAULT) |
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continue; |
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printf("Modified Interrupt Vector Address [%d]: 0x%08x\n", i, |
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le32_to_cpu(zynqhdr->interrupt_vectors[i])); |
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} |
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for (i = 0; i < HEADER_REGINITS; i++) { |
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if (zynqhdr->register_init[i].address == HEADER_REGINIT_NULL) |
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break; |
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if (i == 0) |
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printf("Custom Register Initialization:\n"); |
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printf(" @ 0x%08x -> 0x%08x\n", |
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le32_to_cpu(zynqhdr->register_init[i].address), |
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le32_to_cpu(zynqhdr->register_init[i].data)); |
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} |
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} |
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static int zynqimage_check_params(struct image_tool_params *params) |
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{ |
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if (!params) |
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return 0; |
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if (params->addr != 0x0) { |
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fprintf(stderr, "Error: Load Address cannot be specified.\n"); |
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return -1; |
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} |
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/* |
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* If the entry point is specified ensure it is 64 byte aligned. |
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*/ |
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if (params->eflag && (params->ep % 64 != 0)) { |
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fprintf(stderr, |
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"Error: Entry Point must be aligned to a 64-byte boundary.\n"); |
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return -1; |
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} |
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return !(params->lflag || params->dflag); |
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} |
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static int zynqimage_check_image_types(uint8_t type) |
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{ |
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if (type == IH_TYPE_ZYNQIMAGE) |
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return EXIT_SUCCESS; |
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return EXIT_FAILURE; |
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} |
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static void zynqimage_parse_initparams(struct zynq_header *zynqhdr, |
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const char *filename) |
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{ |
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FILE *fp; |
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struct zynq_reginit reginit; |
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unsigned int reg_count = 0; |
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int r, err; |
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struct stat path_stat; |
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/* Expect a table of register-value pairs, e.g. "0x12345678 0x4321" */ |
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fp = fopen(filename, "r"); |
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if (!fp) { |
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fprintf(stderr, "Cannot open initparams file: %s\n", filename); |
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exit(1); |
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} |
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err = fstat(fileno(fp), &path_stat); |
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if (err) { |
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fclose(fp); |
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return; |
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} |
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if (!S_ISREG(path_stat.st_mode)) { |
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fclose(fp); |
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return; |
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} |
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do { |
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r = fscanf(fp, "%x %x", ®init.address, ®init.data); |
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if (r == 2) { |
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zynqhdr->register_init[reg_count] = reginit; |
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++reg_count; |
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} |
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r = fscanf(fp, "%*[^\n]\n"); /* Skip to next line */ |
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} while ((r != EOF) && (reg_count < HEADER_REGINITS)); |
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fclose(fp); |
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} |
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static void zynqimage_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 zynq_header *zynqhdr = (struct zynq_header *)ptr; |
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zynqimage_default_header(zynqhdr); |
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/* place image directly after header */ |
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zynqhdr->image_offset = |
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cpu_to_le32((uint32_t)sizeof(struct zynq_header)); |
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zynqhdr->image_size = cpu_to_le32((uint32_t)sbuf->st_size); |
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zynqhdr->image_stored_size = zynqhdr->image_size; |
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zynqhdr->image_load = 0x0; |
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if (params->eflag) |
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zynqhdr->image_load = cpu_to_le32((uint32_t)params->ep); |
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/* User can pass in text file with init list */ |
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if (strlen(params->imagename2)) |
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zynqimage_parse_initparams(zynqhdr, params->imagename2); |
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zynqhdr->checksum = zynqimage_checksum(zynqhdr); |
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} |
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U_BOOT_IMAGE_TYPE( |
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zynqimage, |
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"Xilinx Zynq Boot Image support", |
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sizeof(struct zynq_header), |
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(void *)&zynqimage_header, |
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zynqimage_check_params, |
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zynqimage_verify_header, |
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zynqimage_print_header, |
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zynqimage_set_header, |
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NULL, |
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zynqimage_check_image_types, |
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NULL, |
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NULL |
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);
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