| // Copyright (c) 2010 The Chromium OS Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| // |
| // Constants describing the kernel blob content. |
| |
| #ifndef VBOOT_REFERENCE_KERNEL_BLOB_H_ |
| #define VBOOT_REFERENCE_KERNEL_BLOB_H_ |
| |
| |
| // Maximum kernel command-line size |
| #define CROS_CONFIG_SIZE 4096 |
| |
| // Size of the x86 zeropage table |
| #define CROS_PARAMS_SIZE 4096 |
| |
| // Alignment of various chunks within the kernel blob |
| #define CROS_ALIGN 4096 |
| |
| // Sentinel RAM address indicating that no entry address is specified |
| #define CROS_NO_ENTRY_ADDR (~0) |
| |
| // RAM address where the 32-bit kernel expects to be started |
| #define CROS_32BIT_ENTRY_ADDR 0x100000 |
| |
| // Simplified version of the vmlinuz file header |
| struct linux_kernel_header |
| { |
| uint8_t pad0[0x01f1 - 0x0]; |
| uint8_t setup_sects; // 1f1 |
| uint8_t pad1[0x0230 - 0x1f2]; |
| } __attribute__ ((packed)); |
| |
| // Simplified version of x86 kernel e820 memory map entries |
| #define E820_ENTRY_MAX 128 |
| #define E820_TYPE_RAM 1 |
| #define E820_TYPE_RESERVED 2 |
| |
| struct linux_kernel_e820entry { |
| uint64_t start_addr; |
| uint64_t segment_size; |
| uint32_t segment_type; |
| } __attribute__((packed)); |
| |
| // Simplified version of the x86 kernel zeropage table |
| struct linux_kernel_params |
| { |
| uint8_t pad0[0x1e8 - 0x0]; |
| uint8_t n_e820_entry; // 1e8 |
| uint8_t pad1[0x1f1 - 0x1e9]; |
| uint8_t setup_sects; // 1f1 |
| uint8_t pad2[0x1fe - 0x1f2]; |
| uint16_t boot_flag; // 1fe |
| uint8_t pad3[0x210 - 0x200]; |
| uint8_t type_of_loader; // 210 |
| uint8_t pad4[0x218 - 0x211]; |
| uint32_t ramdisk_image; // 218 |
| uint32_t ramdisk_size; // 21c |
| uint8_t pad5[0x228 - 0x220]; |
| uint32_t cmd_line_ptr; // 228 |
| uint8_t pad6[0x2d0 - 0x22c]; |
| struct linux_kernel_e820entry e820_entries[E820_ENTRY_MAX]; // 2d0 - cd0 |
| } __attribute__ ((packed)); |
| |
| |
| #endif // VBOOT_REFERENCE_KERNEL_BLOB_H_ |