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1# grub-efi.bbclass
2# Copyright (c) 2011, Intel Corporation.
3#
4# SPDX-License-Identifier: MIT
5
6# Provide grub-efi specific functions for building bootable images.
7
8# External variables
9# ${INITRD} - indicates a list of filesystem images to concatenate and use as an initrd (optional)
10# ${ROOTFS} - indicates a filesystem image to include as the root filesystem (optional)
11# ${GRUB_GFXSERIAL} - set this to 1 to have graphics and serial in the boot menu
12# ${LABELS} - a list of targets for the automatic config
13# ${APPEND} - an override list of append strings for each label
14# ${GRUB_OPTS} - additional options to add to the config, ';' delimited # (optional)
15# ${GRUB_TIMEOUT} - timeout before executing the deault label (optional)
16# ${GRUB_ROOT} - grub's root device.
17
18GRUB_SERIAL ?= "console=ttyS0,115200"
19GRUB_CFG_VM = "${S}/grub_vm.cfg"
20GRUB_CFG_LIVE = "${S}/grub_live.cfg"
21GRUB_TIMEOUT ?= "10"
22#FIXME: build this from the machine config
23GRUB_OPTS ?= "serial --unit=0 --speed=115200 --word=8 --parity=no --stop=1"
24
25GRUB_ROOT ?= "${ROOT}"
26APPEND ?= ""
27
28# Uses MACHINE specific KERNEL_IMAGETYPE
29PACKAGE_ARCH = "${MACHINE_ARCH}"
30
31# Need UUID utility code.
32inherit fs-uuid
33
34python build_efi_cfg() {
35 import sys
36
37 workdir = d.getVar('WORKDIR')
38 if not workdir:
39 bb.error("WORKDIR not defined, unable to package")
40 return
41
42 gfxserial = d.getVar('GRUB_GFXSERIAL') or ""
43
44 labels = d.getVar('LABELS')
45 if not labels:
46 bb.debug(1, "LABELS not defined, nothing to do")
47 return
48
49 if labels == []:
50 bb.debug(1, "No labels, nothing to do")
51 return
52
53 cfile = d.getVar('GRUB_CFG')
54 if not cfile:
55 bb.fatal('Unable to read GRUB_CFG')
56
57 try:
58 cfgfile = open(cfile, 'w')
59 except OSError:
60 bb.fatal('Unable to open %s' % cfile)
61
62 cfgfile.write('# Automatically created by OE\n')
63
64 opts = d.getVar('GRUB_OPTS')
65 if opts:
66 for opt in opts.split(';'):
67 cfgfile.write('%s\n' % opt)
68
69 cfgfile.write('default=%s\n' % (labels.split()[0]))
70
71 timeout = d.getVar('GRUB_TIMEOUT')
72 if timeout:
73 cfgfile.write('timeout=%s\n' % timeout)
74 else:
75 cfgfile.write('timeout=50\n')
76
77 root = d.getVar('GRUB_ROOT')
78 if not root:
79 bb.fatal('GRUB_ROOT not defined')
80
81 if gfxserial == "1":
82 btypes = [ [ " graphics console", "" ],
83 [ " serial console", d.getVar('GRUB_SERIAL') or "" ] ]
84 else:
85 btypes = [ [ "", "" ] ]
86
87 for label in labels.split():
88 localdata = d.createCopy()
89
90 overrides = localdata.getVar('OVERRIDES')
91 if not overrides:
92 bb.fatal('OVERRIDES not defined')
93
94 localdata.setVar('OVERRIDES', 'grub_' + label + ':' + overrides)
95
96 for btype in btypes:
97 cfgfile.write('\nmenuentry \'%s%s\'{\n' % (label, btype[0]))
98 lb = label
99 if label == "install":
100 lb = "install-efi"
101 kernel = localdata.getVar('KERNEL_IMAGETYPE')
102 cfgfile.write('linux /%s LABEL=%s' % (kernel, lb))
103
104 cfgfile.write(' %s' % replace_rootfs_uuid(d, root))
105
106 append = localdata.getVar('APPEND')
107 initrd = localdata.getVar('INITRD')
108
109 if append:
110 append = replace_rootfs_uuid(d, append)
111 cfgfile.write(' %s' % (append))
112
113 cfgfile.write(' %s' % btype[1])
114 cfgfile.write('\n')
115
116 if initrd:
117 cfgfile.write('initrd /initrd')
118 cfgfile.write('\n}\n')
119
120 cfgfile.close()
121}
122build_efi_cfg[vardepsexclude] += "OVERRIDES"