summaryrefslogtreecommitdiffstats
path: root/meta-rcar-gen2/recipes-kernel/linux/linux.inc
blob: b4b8598c2c85b3517f6949004570abbb05bf3a50 (plain)
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
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
DESCRIPTION = "Linux Kernel"
SECTION = "kernel"
LICENSE = "GPLv2"

LIC_FILES_CHKSUM = "file://COPYING;md5=d7810fab7487fb0aad327b76f1be7cd7"

inherit kernel siteinfo

# Enable OABI compat for people stuck with obsolete userspace
ARM_KEEP_OABI ?= "1"

# Quirk for udev greater or equal 141
UDEV_GE_141 ?= "1"

# Enable cgroups support for systemd
KERNEL_ENABLE_CGROUPS ?= "1"

# Set the verbosity of kernel messages during runtime
# You can define CMDLINE_DEBUG in your local.conf or distro.conf to override this behaviour
CMDLINE_DEBUG ?= '${@base_conditional("DISTRO_TYPE", "release", "quiet", "debug", d)}'
CMDLINE_append = " ${CMDLINE_DEBUG}"

# Set a variable in .configure
# $1 - Configure variable to be set
# $2 - value [n/y/value]
kernel_configure_variable() {
	# Remove the config
	CONF_SED_SCRIPT="$CONF_SED_SCRIPT /CONFIG_$1[ =]/d;"
	if test "$2" = "n"
	then
		echo "# CONFIG_$1 is not set" >> ${S}/.config
	else
		echo "CONFIG_$1=$2" >> ${S}/.config
	fi
}

do_configure_prepend() {
	# Clean .config
	echo "" > ${S}/.config
	CONF_SED_SCRIPT=""

	# oabi / eabi support
	if [ "${TARGET_OS}" = "linux-gnueabi" -o  "${TARGET_OS}" = "linux-uclibceabi" ]; then
		kernel_configure_variable AEABI y
		if [ "${ARM_KEEP_OABI}" = "1" ] ; then
			kernel_configure_variable OABI_COMPAT y
		else
			kernel_configure_variable OABI_COMPAT n
		fi
	else
		kernel_configure_variable AEABI n
		kernel_configure_variable OABI_COMPAT n
	fi

	# Set cmdline
	kernel_configure_variable CMDLINE "\"${CMDLINE}\""

	# Localversion
	kernel_configure_variable LOCALVERSION "\"\""
	kernel_configure_variable LOCALVERSION_AUTO n

	# Distribution-dependent kernel features
	case "${DISTRO_FEATURES}" in
		*bluetooth*) do_configure_bluetooth
	esac

	# Udev quirks
	# Newer versions of udev mandate that sysfs doesn't have deprecated entries
	if [ "${UDEV_GE_141}" = "1" ] ; then
		kernel_configure_variable SYSFS_DEPRECATED n
		kernel_configure_variable SYSFS_DEPRECATED_V2 n
		kernel_configure_variable HOTPLUG y
		kernel_configure_variable UEVENT_HELPER_PATH "\"\""
		kernel_configure_variable UNIX y
		kernel_configure_variable SYSFS y
		kernel_configure_variable PROC_FS y
		kernel_configure_variable TMPFS y
		kernel_configure_variable INOTIFY_USER y
		kernel_configure_variable SIGNALFD y
		kernel_configure_variable TMPFS_POSIX_ACL y
		kernel_configure_variable BLK_DEV_BSG y
		kernel_configure_variable DEVTMPFS y
		kernel_configure_variable DEVTMPFS_MOUNT y
	fi

	# Newer inits like systemd need cgroup support
	if [ "${KERNEL_ENABLE_CGROUPS}" = "1" ] ; then
		kernel_configure_variable CGROUP_SCHED y
		kernel_configure_variable CGROUPS y
		kernel_configure_variable CGROUP_NS y
		kernel_configure_variable CGROUP_FREEZER y
		kernel_configure_variable CGROUP_DEVICE y
		kernel_configure_variable CPUSETS y
		kernel_configure_variable PROC_PID_CPUSET y
		kernel_configure_variable CGROUP_CPUACCT y
		kernel_configure_variable RESOURCE_COUNTERS y
	fi

	# root-over-nfs-over-usb-eth support. Limited, but should cover some cases
	# Enable this by setting a proper CMDLINE_NFSROOT_USB.
	if [ ! -z "${CMDLINE_NFSROOT_USB}" ]; then
		oenote "Configuring the kernel for root-over-nfs-over-usb-eth with CMDLINE ${CMDLINE_NFSROOT_USB}"
		kernel_configure_variable INET y
		kernel_configure_variable IP_PNP y
		kernel_configure_variable USB_GADGET y
		kernel_configure_variable USB_GADGET_SELECTED y
		kernel_configure_variable USB_ETH y
		kernel_configure_variable NFS_FS y
		kernel_configure_variable ROOT_NFS y
		kernel_configure_variable ROOT_NFS y
		kernel_configure_variable CMDLINE "\"${CMDLINE_NFSROOT_USB}\""
	fi

	# Activate CONFIG_LEGACY_PTYS
	kernel_configure_variable LEGACY_PTYS y

        # needed for ttySC6 login on koelsch with systemd
        kernel_configure_variable FHANDLE y

        # needed for USB touchscreens
        kernel_configure_variable HID_MULTITOUCH y

        # additional configs needed for Genivi compliance
        kernel_configure_variable EXPERIMENTAL y
        kernel_configure_variable ECRYPT_FS y
        kernel_configure_variable QUOTA y
        kernel_configure_variable BT y

        # add uinput for automated testing
        kernel_configure_variable INPUT_MISC y
        kernel_configure_variable INPUT_UINPUT y

	# psplash only
	kernel_configure_variable FRAMEBUFFER_CONSOLE n
	kernel_configure_variable LOGO n

	# systemd requires following
	kernel_configure_variable AUTOFS4_FS y
	kernel_configure_variable IPV6 y
	kernel_configure_variable SCHEDSTATS y

	# Keep this the last line
	# Remove all modified configs and add the rest to .config
	sed -e "${CONF_SED_SCRIPT}" < '${WORKDIR}/defconfig' >> '${S}/.config'

	yes '' | oe_runmake oldconfig
}

do_configure_bluetooth() {
    # Needed for Bluetooth hardware support
    kernel_configure_variable BT_HIDP y
    kernel_configure_variable BT_HCIBTUSB m
    kernel_configure_variable BT_BNEP m
    kernel_configure_variable BT_BNEP_MC_FILTER y
    kernel_configure_variable BT_BNEP_PROTO_FILTER y
    kernel_configure_variable BT_RFCOMM m
    kernel_configure_variable BT_RFCOMM_TTY y
    kernel_configure_variable RFKILL m
}

do_configure_append_porter() {
    # Enable CAN
    kernel_configure_variable CAN y
    kernel_configure_variable CAN_RCAR y

    yes '' | oe_runmake oldconfig
}

do_configure_append_smack() {
    # Enable Smack
    kernel_configure_variable IP_NF_SECURITY m
    kernel_configure_variable IP6_NF_SECURITY m
    kernel_configure_variable EXT2_FS_SECURITY y
    kernel_configure_variable EXT3_FS_SECURITY y
    kernel_configure_variable EXT4_FS_SECURITY y
    kernel_configure_variable SECURITY y
    kernel_configure_variable SECURITY_SMACK y
    kernel_configure_variable TMPFS_XATTR y

    kernel_configure_variable DEFAULT_SECURITY "smack"
    kernel_configure_variable DEFAULT_SECURITY_SMACK y
    yes '' | oe_runmake oldconfig
}

# Automatically depend on lzop-native if CONFIG_KERNEL_LZO is enabled
python () {
    try:
        defconfig = bb.fetch2.localpath('file://defconfig', d)
    except bb.fetch2.FetchError:
        return

    try:
        configfile = open(defconfig)
    except IOError:
        return

    if 'CONFIG_KERNEL_LZO=y\n' in configfile.readlines():
        depends = d.getVar('DEPENDS', False)
        d.setVar('DEPENDS', depends + ' lzop-native')
}