1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
|
## This file is part of the coreboot project.
##
## Copyright (C) 2017 Facebook Inc.
## Copyright (C) 2018 9elements Cyber Security
##
## This program is free software; you can redistribute it and/or modify
## it under the terms of the GNU General Public License as published by
## the Free Software Foundation; version 2 of the License.
##
## This program is distributed in the hope that it will be useful,
## but WITHOUT ANY WARRANTY; without even the implied warranty of
## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
## GNU General Public License for more details.
##
SHELL := /bin/bash
ARCH-$(CONFIG_LINUXBOOT_X86_64)=x86_64
ARCH-$(CONFIG_LINUXBOOT_X86)=x86
ARCH-$(CONFIG_LINUXBOOT_ARM64)=arm64
TAG-$(CONFIG_LINUXBOOT_KERNEL_MAINLINE)=mainline
TAG-$(CONFIG_LINUXBOOT_KERNEL_STABLE)=stable
TAG-$(CONFIG_LINUXBOOT_KERNEL_LONGTERM)=longterm
pwd:=$(shell pwd)
top:=../../..
project_dir=linuxboot
tarball_dir:=$(project_dir)/tarball
decompress_flag=.done
OBJCOPY:=$(LINUXBOOT_CROSS_COMPILE)objcopy
ifeq ($(CONFIG_LINUXBOOT_KERNEL_CUSTOM),y)
kernel_version:=$(CONFIG_LINUXBOOT_KERNEL_CUSTOM_VERSION)
else
kernel_version:=$(shell curl -s -k https://www.kernel.org/feeds/kdist.xml | \
sed -n -e 's@.*<guid isPermaLink="false">\(.*\)</guid>.*@\1@p' | \
awk -F ',' '/$(TAG-y)/{ print $$3 }' | \
head -n 1)
endif
kernel_dir=$(project_dir)/kernel-$(subst .,_,$(kernel_version))
kernel_tarball=linux-$(kernel_version).tar
kernel_mirror=https://mirrors.edge.kernel.org/pub/linux/kernel
ifeq ($(findstring x2.6.,x$(kernel_version)),x2.6.)
kernel_mirror_path := $(kernel_mirror)/v2.6
else ifeq ($(findstring x3.,x$(kernel_version)),x3.)
kernel_mirror_path := $(kernel_mirror)/v3.x
else ifeq ($(findstring x4.,x$(kernel_version)),x4.)
kernel_mirror_path := $(kernel_mirror)/v4.x
else ifeq ($(findstring x5.,x$(kernel_version)),x5.)
kernel_mirror_path := $(kernel_mirror)/v5.x
endif
all: kernel
lookup:
ifeq ($(kernel_version),)
$(error kernel version lookup failed for $(TAG-y) release)
endif
@echo " WWW Kernel [$(TAG-y)] $(kernel_version)"
fetch:
ifneq ($(shell [[ -d "$(kernel_dir)" && -f "$(kernel_dir)/$(decompress_flag)" ]];echo $$?),0)
mkdir -p $(tarball_dir)
if [[ ! -f $(tarball_dir)/$(kernel_tarball).xz && ! -f $(tarball_dir)/$(kernel_tarball).xz ]]; then \
echo " WWW $(kernel_tarball).xz"; \
cd $(tarball_dir); \
curl -OLs "$(kernel_mirror_path)/$(kernel_tarball).xz"; \
cd $(pwd); \
fi
endif
unpack: fetch
if [[ -d "$(kernel_dir)" && ! -f "$(kernel_dir)/$(decompress_flag)" ]]; then \
rm -rf $(kernel_dir); \
fi
if [[ ! -d "$(kernel_dir)" ]]; then \
mkdir $(kernel_dir); \
echo " XZ $(kernel_tarball).xz"; \
tar xJf $(tarball_dir)/$(kernel_tarball).xz --strip 1 -C $(kernel_dir); \
fi
touch $(kernel_dir)/$(decompress_flag)
$(kernel_dir)/.config: unpack
@echo " CONFIG Linux $(kernel_version)"
ifeq ($(CONFIG_LINUXBOOT_KERNEL_CUSTOM_CONFIG),y)
cp $(CONFIG_LINUXBOOT_KERNEL_CONFIGFILE) $(kernel_dir)/.config
else
cp $(ARCH-y)/defconfig $(kernel_dir)/.config
endif
$(MAKE) -C $(kernel_dir) olddefconfig ARCH=$(ARCH-y)
build: $(kernel_dir)/.config
@echo " MAKE Linux $(kernel_version)"
ifeq ($(CONFIG_LINUXBOOT_KERNEL_BZIMAGE),y)
$(MAKE) -C $(kernel_dir) CROSS_COMPILE=$(LINUXBOOT_CROSS_COMPILE) ARCH=$(ARCH-y) bzImage
else
ifeq ($(CONFIG_LINUXBOOT_KERNEL_UIMAGE),y)
$(MAKE) -C $(kernel_dir) CROSS_COMPILE=$(LINUXBOOT_CROSS_COMPILE) ARCH=$(ARCH-y) vmlinux
endif
endif
ifeq ($(CONFIG_LINUXBOOT_KERNEL_BZIMAGE),y)
$(top)/$(CONFIG_LINUXBOOT_KERNEL): build
@echo " CP bzImage"
cp $(kernel_dir)/arch/x86/boot/bzImage $@
else
ifeq ($(CONFIG_LINUXBOOT_KERNEL_UIMAGE),y)
$(project_dir)/target.dtb: $(top)/$(CONFIG_LINUXBOOT_DTB_FILE)
cp $< $@
$(project_dir)/vmlinux.bin: $(kernel_dir)/vmlinux
$(OBJCOPY) -O binary $< $@
$(project_dir)/vmlinux.bin.lzma: $(project_dir)/vmlinux.bin
xz -c -k -f --format=lzma --lzma1=dict=1MiB,lc=3,lp=0,pb=3 $< > $@
$(top)/$(CONFIG_LINUXBOOT_KERNEL): build $(project_dir)/vmlinux.bin.lzma $(project_dir)/target.dtb
cp $(project_dir)/../arm64/kernel_fdt_lzma.its $(project_dir)
cp $(top)/$(CONFIG_LINUXBOOT_INITRAMFS)$(CONFIG_LINUXBOOT_INITRAMFS_SUFFIX) $(project_dir)/initramfs
mkimage -f $(project_dir)/kernel_fdt_lzma.its $@
else
$(error Kernel image format not found)
exit 1
endif
endif
ifneq ($(TAG-y),)
kernel: lookup $(top)/$(CONFIG_LINUXBOOT_KERNEL)
else
kernel: $(top)/$(CONFIG_LINUXBOOT_KERNEL)
endif
.PHONY: all kernel build unpack fetch check
|
