1 files changed, 65 insertions, 0 deletions
diff --git a/futility/kernel_blob.h b/futility/kernel_blob.h
new file mode 100644
index 00000000..173d48d2
--- /dev/null
+++ b/futility/kernel_blob.h
@@ -0,0 +1,65 @@
+// 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_
+
+
+// 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_