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/* Copyright 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_
/* Linux vmlinuz header signature */
#define VMLINUZ_HEADER_SIG 0x53726448
/* 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 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 */
uint16_t jump; /* 200 */
uint32_t header; /* 202 */
uint16_t version; /* 206 */
uint8_t pad3[0x210 - 0x208];
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 */
uint32_t ramdisk_max; /* 22c */
uint32_t kernel_alignment; /* 230 */
uint8_t relocatable_kernel; /* 234 */
uint8_t min_alignment; /* 235 */
uint8_t pad6[0x2d0 - 0x236];
struct linux_kernel_e820entry
e820_entries[E820_ENTRY_MAX]; /* 2d0-cd0 */
} __attribute__ ((packed));
#endif /* VBOOT_REFERENCE_KERNEL_BLOB_H_ */
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