1 | <?xml version="1.0" encoding="ISO-8859-1"?>
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2 | <!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
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3 | "http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
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4 | <!ENTITY % general-entities SYSTEM "../../../general.ent">
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5 | %general-entities;
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6 |
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7 | <!ENTITY grub-efi-download-http "https://ftp.gnu.org/gnu/grub/grub-&grub-version;.tar.xz">
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8 | <!ENTITY grub-efi-download-ftp " ">
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9 | <!ENTITY grub-efi-md5sum "cf0fd928b1e5479c8108ee52cb114363">
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10 | <!ENTITY grub-efi-size "6.3 MB">
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11 | <!ENTITY grub-efi-buildsize "183 MB">
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12 | <!ENTITY grub-efi-time "0.4 SBU (on 64-bit LFS, using parallelism=4)">
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13 |
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14 | <!ENTITY unifont-download-http "https://unifoundry.com/pub/unifont/unifont-&unifont-version;/font-builds/unifont-&unifont-version;.pcf.gz">
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15 | <!ENTITY unifont-md5sum "94ff8cb4d5674cd2f38b00cede5e06d5">
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16 | <!ENTITY unifont-size "1.4 MB">
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17 | ]>
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18 |
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19 | <sect1 id="grub-efi" xreflabel="GRUB-&grub-version; for EFI">
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20 | <?dbhtml filename="grub-efi.html"?>
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21 |
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22 |
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23 | <title>GRUB-&grub-version; for EFI</title>
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24 |
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25 | <indexterm zone="grub-efi">
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26 | <primary sortas="a-grub-efi">grub-efi</primary>
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27 | </indexterm>
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28 |
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29 | <sect2 role="package">
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30 | <title>Introduction to GRUB</title>
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31 |
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32 | <para>
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33 | The <application>GRUB</application> package provides GRand Unified
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34 | Bootloader. In this page it will be built with UEFI support, which
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35 | is not enabled for GRUB built in LFS.
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36 | </para>
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37 |
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38 | &lfs120_checked;
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39 |
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40 | <bridgehead renderas="sect3">Package Information</bridgehead>
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41 | <itemizedlist spacing="compact">
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42 | <listitem>
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43 | <para>
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44 | Download (HTTP): <ulink url="&grub-efi-download-http;"/>
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45 | </para>
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46 | </listitem>
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47 | <listitem>
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48 | <para>
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49 | Download (FTP): <ulink url="&grub-efi-download-ftp;"/>
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50 | </para>
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51 | </listitem>
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52 | <listitem>
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53 | <para>
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54 | Download MD5 sum: &grub-efi-md5sum;
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55 | </para>
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56 | </listitem>
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57 | <listitem>
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58 | <para>
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59 | Download size: &grub-efi-size;
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60 | </para>
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61 | </listitem>
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62 | <listitem>
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63 | <para>
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64 | Estimated disk space required: &grub-efi-buildsize;
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65 | </para>
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66 | </listitem>
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67 | <listitem>
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68 | <para>
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69 | Estimated build time: &grub-efi-time;
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70 | </para>
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71 | </listitem>
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72 | </itemizedlist>
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73 |
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74 | <bridgehead renderas="sect3">Additional Downloads</bridgehead>
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75 |
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76 | <itemizedlist spacing="compact">
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77 | <listitem>
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78 | <para>
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79 | Required patch:
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80 | <ulink url="&patch-root;/grub-&grub-version;-upstream_fixes-1.patch"/>
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81 | </para>
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82 | </listitem>
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83 | </itemizedlist>
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84 |
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85 | <itemizedlist spacing="compact">
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86 | <title>Unicode font data used to display GRUB menu</title>
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87 | <listitem>
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88 | <para>
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89 | Download (HTTP): <ulink url="&unifont-download-http;"/>
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90 | </para>
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91 | </listitem>
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92 | <listitem>
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93 | <para>
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94 | Download MD5 sum: &unifont-md5sum;
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95 | </para>
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96 | </listitem>
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97 | <listitem>
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98 | <para>
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99 | Download size: &unifont-size;
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100 | </para>
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101 | </listitem>
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102 | </itemizedlist>
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103 |
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104 | <itemizedlist spacing="compact">
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105 | <title>GCC (only needed if building on 32-bit LFS)</title>
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106 | <listitem>
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107 | <para>
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108 | Refer to <xref linkend='gcc'/> page for download info.
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109 | </para>
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110 | </listitem>
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111 | </itemizedlist>
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112 |
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113 | <bridgehead renderas="sect3">GRUB Dependencies</bridgehead>
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114 |
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115 | <bridgehead renderas="sect4">Recommended</bridgehead>
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116 | <para role="recommended">
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117 | <xref role="runtime" linkend="efibootmgr"/> (runtime) and
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118 | <xref linkend="freetype2"/>
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119 | </para>
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120 |
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121 | <bridgehead renderas="sect4">Optional</bridgehead>
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122 | <para role="optional">
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123 | <xref linkend="lvm2"/>
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124 | </para>
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125 |
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126 |
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127 | </sect2>
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128 |
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129 | <sect2 role="installation">
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130 | <title>Installation of GRUB</title>
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131 |
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132 | <para>
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133 | First, install font data as the
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134 | <systemitem class="username">root</systemitem> user:
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135 | </para>
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136 |
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137 | <screen role="root"><userinput>mkdir -pv /usr/share/fonts/unifont &&
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138 | gunzip -c ../unifont-&unifont-version;.pcf.gz > /usr/share/fonts/unifont/unifont.pcf</userinput></screen>
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139 |
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140 | <warning>
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141 | <para>Unset any environment variables which may affect the build:</para>
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142 |
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143 | <screen><userinput>unset {C,CPP,CXX,LD}FLAGS</userinput></screen>
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144 |
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145 | <para>Don't try <quote>tuning</quote> this package with custom
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146 | compilation flags: this package is a bootloader, with low-level
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147 | operations in the source code which is likely to be broken by some
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148 | aggressive optimizations.</para>
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149 | </warning>
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150 |
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151 | <para>
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152 | Fix an issue causing <command>grub-install</command> to fail when the
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153 | <filename class='directory'>/boot</filename> partition (or the root
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154 | partition if <filename class='directory'>/boot</filename> is not a
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155 | separate partition) is created by e2fsprogs-1.47.0 or later:
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156 | </para>
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157 |
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158 | <screen><userinput>patch -Np1 -i ../grub-&grub-version;-upstream_fixes-1.patch</userinput></screen>
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159 |
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160 | <para>If you are running a 32-bit LFS, prepare a 64-bit compiler:</para>
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161 |
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162 | <!-- 'literal' is used deliberately to show this is only for 32-bit LFS -->
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163 | <screen><userinput>case $(uname -m) in i?86 )
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164 | <literal>tar xf ../gcc-&gcc-version;.tar.xz
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165 | mkdir gcc-&gcc-version;/build
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166 | pushd gcc-&gcc-version;/build
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167 | ../configure --prefix=$PWD/../../x86_64-gcc \
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168 | --target=x86_64-linux-gnu \
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169 | --with-system-zlib \
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170 | --enable-languages=c,c++ \
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171 | --with-ld=/usr/bin/ld
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172 | make all-gcc
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173 | make install-gcc
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174 | popd
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175 | export TARGET_CC=$PWD/x86_64-gcc/bin/x86_64-linux-gnu-gcc</literal>
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176 | esac</userinput></screen>
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177 |
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178 | <para>
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179 | Build <application>GRUB</application> with the following commands:
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180 | </para>
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181 |
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182 | <screen><userinput>./configure --prefix=/usr \
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183 | --sysconfdir=/etc \
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184 | --disable-efiemu \
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185 | --enable-grub-mkfont \
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186 | --with-platform=efi \
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187 | --target=x86_64 \
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188 | --disable-werror &&
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189 | unset TARGET_CC &&
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190 | make</userinput></screen>
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191 |
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192 | <para>
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193 | This package does not have a test suite providing meaningful results.
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194 | </para>
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195 |
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196 | <para>
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197 | Now, as the <systemitem class="username">root</systemitem> user:
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198 | </para>
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199 |
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200 | <screen role="root"><userinput>make install &&
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201 | mv -v /etc/bash_completion.d/grub /usr/share/bash-completion/completions</userinput></screen>
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202 |
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203 | </sect2>
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204 |
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205 | <sect2 role="commands">
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206 | <title>Command Explanations</title>
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207 |
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208 | <para>
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209 | <parameter>--enable-grub-mkfont</parameter>: Build the tool named
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210 | <command>grub-mkfont</command> to generate the font file for the boot
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211 | loader from the font data we've installed.
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212 | </para>
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213 |
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214 | <warning>
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215 | <para>If the recommended dependency <xref linkend="freetype2"/> is not
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216 | installed, it is possible to omit this option and build GRUB. However,
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217 | if <command>grub-mkfont</command> is not built, or the unicode font
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218 | data is not available at the time GRUB is built, GRUB won't install
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219 | any font for the boot loader. The GRUB boot menu will be displayed
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220 | using a coarse font or in a smaller region on the screen.</para>
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221 | </warning>
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222 |
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223 | <para>
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224 | <parameter>--with-platform=efi</parameter>: Ensures building GRUB with
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225 | EFI enabled.
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226 | </para>
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227 |
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228 | <para>
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229 | <parameter>--target=x86_64</parameter>: Ensures building GRUB for
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230 | x86_64 even if building on a 32-bit LFS system. Most EFI firmware
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231 | on x86_64 does not support 32-bit bootloaders.
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232 | </para>
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233 |
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234 | <para>
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235 | <option>--target=i386</option>: A few 32-bit x86 platforms have EFI
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236 | support. And, some x86_64 platforms have a 32-bit EFI implementation,
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237 | but they are very old and rare. Use this instead of
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238 | <parameter>--target=x86_64</parameter> if you are
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239 | <emphasis role='bold'>absolutely sure</emphasis> that LFS is running
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240 | on such a system.
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241 | </para>
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242 |
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243 | </sect2>
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244 |
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245 | <sect2>
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246 | <title>Configuring GRUB</title>
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247 |
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248 | <para>
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249 | Using GRUB to make the LFS system bootable on UEFI platform will be
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250 | discussed in <xref linkend="grub-setup"/>.
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251 | </para>
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252 | </sect2>
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253 |
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254 | <sect2 role="content">
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255 | <title>Contents</title>
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256 |
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257 | <para>See the page for GRUB in LFS book.</para>
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258 | </sect2>
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259 |
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260 | </sect1>
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