1*8617a60dSAndroid Build Coastguard Worker /* Copyright 2010 The ChromiumOS Authors 2*8617a60dSAndroid Build Coastguard Worker * Use of this source code is governed by a BSD-style license that can be 3*8617a60dSAndroid Build Coastguard Worker * found in the LICENSE file. 4*8617a60dSAndroid Build Coastguard Worker * 5*8617a60dSAndroid Build Coastguard Worker * Constants describing the kernel blob content. 6*8617a60dSAndroid Build Coastguard Worker */ 7*8617a60dSAndroid Build Coastguard Worker 8*8617a60dSAndroid Build Coastguard Worker #ifndef VBOOT_REFERENCE_KERNEL_BLOB_H_ 9*8617a60dSAndroid Build Coastguard Worker #define VBOOT_REFERENCE_KERNEL_BLOB_H_ 10*8617a60dSAndroid Build Coastguard Worker 11*8617a60dSAndroid Build Coastguard Worker /* Linux vmlinuz header signature */ 12*8617a60dSAndroid Build Coastguard Worker #define VMLINUZ_HEADER_SIG 0x53726448 13*8617a60dSAndroid Build Coastguard Worker 14*8617a60dSAndroid Build Coastguard Worker /* Maximum kernel command-line size */ 15*8617a60dSAndroid Build Coastguard Worker #define CROS_CONFIG_SIZE 4096 16*8617a60dSAndroid Build Coastguard Worker 17*8617a60dSAndroid Build Coastguard Worker /* Size of the x86 zeropage table */ 18*8617a60dSAndroid Build Coastguard Worker #define CROS_PARAMS_SIZE 4096 19*8617a60dSAndroid Build Coastguard Worker 20*8617a60dSAndroid Build Coastguard Worker /* Alignment of various chunks within the kernel blob */ 21*8617a60dSAndroid Build Coastguard Worker #define CROS_ALIGN 4096 22*8617a60dSAndroid Build Coastguard Worker 23*8617a60dSAndroid Build Coastguard Worker /* Sentinel RAM address indicating that no entry address is specified */ 24*8617a60dSAndroid Build Coastguard Worker #define CROS_NO_ENTRY_ADDR (~0) 25*8617a60dSAndroid Build Coastguard Worker 26*8617a60dSAndroid Build Coastguard Worker /* RAM address where the 32-bit kernel expects to be started */ 27*8617a60dSAndroid Build Coastguard Worker #define CROS_32BIT_ENTRY_ADDR 0x100000 28*8617a60dSAndroid Build Coastguard Worker 29*8617a60dSAndroid Build Coastguard Worker /* Simplified version of x86 kernel e820 memory map entries */ 30*8617a60dSAndroid Build Coastguard Worker #define E820_ENTRY_MAX 128 31*8617a60dSAndroid Build Coastguard Worker #define E820_TYPE_RAM 1 32*8617a60dSAndroid Build Coastguard Worker #define E820_TYPE_RESERVED 2 33*8617a60dSAndroid Build Coastguard Worker 34*8617a60dSAndroid Build Coastguard Worker struct linux_kernel_e820entry { 35*8617a60dSAndroid Build Coastguard Worker uint64_t start_addr; 36*8617a60dSAndroid Build Coastguard Worker uint64_t segment_size; 37*8617a60dSAndroid Build Coastguard Worker uint32_t segment_type; 38*8617a60dSAndroid Build Coastguard Worker } __attribute__((packed)); 39*8617a60dSAndroid Build Coastguard Worker 40*8617a60dSAndroid Build Coastguard Worker /* Simplified version of the x86 kernel zeropage table */ 41*8617a60dSAndroid Build Coastguard Worker struct linux_kernel_params { 42*8617a60dSAndroid Build Coastguard Worker uint8_t pad0[0x1e8 - 0x0]; 43*8617a60dSAndroid Build Coastguard Worker uint8_t n_e820_entry; /* 1e8 */ 44*8617a60dSAndroid Build Coastguard Worker uint8_t pad1[0x1f1 - 0x1e9]; 45*8617a60dSAndroid Build Coastguard Worker uint8_t setup_sects; /* 1f1 */ 46*8617a60dSAndroid Build Coastguard Worker uint8_t pad2[0x1fe - 0x1f2]; 47*8617a60dSAndroid Build Coastguard Worker uint16_t boot_flag; /* 1fe */ 48*8617a60dSAndroid Build Coastguard Worker uint16_t jump; /* 200 */ 49*8617a60dSAndroid Build Coastguard Worker uint32_t header; /* 202 */ 50*8617a60dSAndroid Build Coastguard Worker uint16_t version; /* 206 */ 51*8617a60dSAndroid Build Coastguard Worker uint8_t pad3[0x210 - 0x208]; 52*8617a60dSAndroid Build Coastguard Worker uint8_t type_of_loader; /* 210 */ 53*8617a60dSAndroid Build Coastguard Worker uint8_t pad4[0x218 - 0x211]; 54*8617a60dSAndroid Build Coastguard Worker uint32_t ramdisk_image; /* 218 */ 55*8617a60dSAndroid Build Coastguard Worker uint32_t ramdisk_size; /* 21c */ 56*8617a60dSAndroid Build Coastguard Worker uint8_t pad5[0x228 - 0x220]; 57*8617a60dSAndroid Build Coastguard Worker uint32_t cmd_line_ptr; /* 228 */ 58*8617a60dSAndroid Build Coastguard Worker uint32_t ramdisk_max; /* 22c */ 59*8617a60dSAndroid Build Coastguard Worker uint32_t kernel_alignment; /* 230 */ 60*8617a60dSAndroid Build Coastguard Worker uint8_t relocatable_kernel; /* 234 */ 61*8617a60dSAndroid Build Coastguard Worker uint8_t min_alignment; /* 235 */ 62*8617a60dSAndroid Build Coastguard Worker uint8_t pad6[0x2d0 - 0x236]; 63*8617a60dSAndroid Build Coastguard Worker struct linux_kernel_e820entry 64*8617a60dSAndroid Build Coastguard Worker e820_entries[E820_ENTRY_MAX]; /* 2d0-cd0 */ 65*8617a60dSAndroid Build Coastguard Worker } __attribute__((packed)); 66*8617a60dSAndroid Build Coastguard Worker 67*8617a60dSAndroid Build Coastguard Worker #endif /* VBOOT_REFERENCE_KERNEL_BLOB_H_ */ 68