Accepting request 741725 from home:Andreas_Schwab:Factory

- Enable support for riscv64
- Backports from upstream:
  * risc-v-fix-computation-of-pc-relative-relocation-offset.patch
  * risc-v-add-clzdi2-symbol.patch
  * grub-install-define-default-platform-for-risc-v.patch

OBS-URL: https://build.opensuse.org/request/show/741725
OBS-URL: https://build.opensuse.org/package/show/Base:System/grub2?expand=0&rev=341

grub2.spec

@@ -101,11 +101,17 @@ BuildRequires:  update-bootloader-rpm-macros
 %define only_efi 1
 %endif
 
+%ifarch riscv64
+%define grubcpu riscv64
+%define platform efi
+%define only_efi 1
+%endif
+
 %define grubarch %{grubcpu}-%{platform}
 
 # build efi bootloader on some platforms only:
 %if ! 0%{?efi:1}
-%global efi %{ix86} x86_64 ia64 aarch64 %{arm}
+%global efi %{ix86} x86_64 ia64 aarch64 %{arm} riscv64
 %endif
 
 %ifarch %{efi}
@@ -277,6 +283,10 @@ Patch501:       grub2-btrfs-help-on-snapper-rollback.patch
 Patch510:       grub2-video-limit-the-resolution-for-fixed-bimap-font.patch
 # Support long menuentries (FATE#325760)
 Patch511:       grub2-gfxmenu-support-scrolling-menu-entry-s-text.patch
+# RISC-V fixes
+Patch601:       risc-v-fix-computation-of-pc-relative-relocation-offset.patch
+Patch602:       risc-v-add-clzdi2-symbol.patch
+Patch603:       grub-install-define-default-platform-for-risc-v.patch
 
 Requires:       gettext-runtime
 %if 0%{?suse_version} >= 1140
@@ -310,7 +320,7 @@ BuildRoot:      %{_tmppath}/%{name}-%{version}-build
 %if 0%{?only_x86_64:1}
 ExclusiveArch:  x86_64
 %else
-ExclusiveArch:  %{ix86} x86_64 ppc ppc64 ppc64le s390x aarch64 %{arm}
+ExclusiveArch:  %{ix86} x86_64 ppc ppc64 ppc64le s390x aarch64 %{arm} riscv64
 %endif
 
 %description
@@ -371,10 +381,10 @@ provides support for %{platform} systems.
 %package %{grubefiarch}
 
 Summary:        Bootloader with support for Linux, Multiboot and more
-# Require efibootmgr
-# Without it grub-install is broken so break the package as well if unavailable
 Group:          System/Boot
 BuildArch:      noarch
+# Require efibootmgr
+# Without it grub-install is broken so break the package as well if unavailable
 Requires:       efibootmgr
 Requires(post): efibootmgr
 Requires:       %{name} = %{version}
@@ -541,6 +551,9 @@ swap partition while in resuming
 %patch501 -p1
 %patch510 -p1
 %patch511 -p1
+%patch601 -p1
+%patch602 -p1
+%patch603 -p1
 
 %build
 # collect evidence to debug spurious build failure on SLE15