blob: d5256aa8266afd624f2ca76ae836da0ae5c451fb [file] [log] [blame]
// 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
// 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 the x86 kernel zeropage table
struct linux_kernel_params
{
uint8_t pad0[0x01f1 - 0x0];
uint8_t setup_sects; // 1f1
uint8_t pad1[0x1fe - 0x1f2];
uint16_t boot_flag; // 1fe
uint8_t pad2[0x210 - 0x200];
uint8_t type_of_loader; // 210
uint8_t pad3[0x218 - 0x211];
uint32_t ramdisk_image; // 218
uint32_t ramdisk_size; // 21c
uint8_t pad4[0x228 - 0x220];
uint32_t cmd_line_ptr; // 228
uint8_t pad5[0x0cd0 - 0x22c];
} __attribute__ ((packed));
#endif // VBOOT_REFERENCE_KERNEL_BLOB_H_