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036922ed8a
The default behavior of dump_kernel_config is changed from using CROS_32BIT_ENTRY_ADDR to reading from kernel preamble. The main motivation for this change is in preparation for ARM boards of which kernel body load address cannot be CROS_32BIT_ENTRY_ADDR. Since we do not want that all ARM calling sides of dump_kernel_config have to carry the kloadaddr argument, it would be better to let dump_kernel_config read this address from the kernel preamble by default. BUG=chromium-os:28077 TEST=Run dump_kernel_config w/ and w/o this change Change-Id: I5eddcc35e5970dfce02cc66208438c57351f1c81 Reviewed-on: https://gerrit.chromium.org/gerrit/19660 Tested-by: Che-Liang Chiou <clchiou@chromium.org> Reviewed-by: Don Garrett <dgarrett@chromium.org> Reviewed-by: Bill Richardson <wfrichar@chromium.org> Commit-Ready: Che-Liang Chiou <clchiou@chromium.org>
67 lines
2.0 KiB
C
67 lines
2.0 KiB
C
// Copyright (c) 2010 The Chromium OS Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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//
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// Constants describing the kernel blob content.
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#ifndef VBOOT_REFERENCE_KERNEL_BLOB_H_
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#define VBOOT_REFERENCE_KERNEL_BLOB_H_
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// Maximum kernel command-line size
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#define CROS_CONFIG_SIZE 4096
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// Size of the x86 zeropage table
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#define CROS_PARAMS_SIZE 4096
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// Alignment of various chunks within the kernel blob
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#define CROS_ALIGN 4096
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// Sentinel RAM address indicating that no entry address is specified
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#define CROS_NO_ENTRY_ADDR (~0)
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// RAM address where the 32-bit kernel expects to be started
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#define CROS_32BIT_ENTRY_ADDR 0x100000
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// Simplified version of the vmlinuz file header
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struct linux_kernel_header
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{
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uint8_t pad0[0x01f1 - 0x0];
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uint8_t setup_sects; // 1f1
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uint8_t pad1[0x0230 - 0x1f2];
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} __attribute__ ((packed));
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// Simplified version of x86 kernel e820 memory map entries
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#define E820_ENTRY_MAX 128
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#define E820_TYPE_RAM 1
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#define E820_TYPE_RESERVED 2
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struct linux_kernel_e820entry {
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uint64_t start_addr;
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uint64_t segment_size;
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uint32_t segment_type;
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} __attribute__((packed));
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// Simplified version of the x86 kernel zeropage table
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struct linux_kernel_params
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{
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uint8_t pad0[0x1e8 - 0x0];
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uint8_t n_e820_entry; // 1e8
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uint8_t pad1[0x1f1 - 0x1e9];
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uint8_t setup_sects; // 1f1
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uint8_t pad2[0x1fe - 0x1f2];
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uint16_t boot_flag; // 1fe
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uint8_t pad3[0x210 - 0x200];
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uint8_t type_of_loader; // 210
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uint8_t pad4[0x218 - 0x211];
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uint32_t ramdisk_image; // 218
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uint32_t ramdisk_size; // 21c
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uint8_t pad5[0x228 - 0x220];
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uint32_t cmd_line_ptr; // 228
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uint8_t pad6[0x2d0 - 0x22c];
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struct linux_kernel_e820entry e820_entries[E820_ENTRY_MAX]; // 2d0 - cd0
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} __attribute__ ((packed));
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#endif // VBOOT_REFERENCE_KERNEL_BLOB_H_
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