Add RISC-V patches and disable ARM patches breaking builds

Signed-off-by: Jason Montleon <jmontleo@redhat.com>

0280-kern-riscv-efi-init-Use-time-register-in-grub_efi_ge.patch

@@ -0,0 +1,44 @@
+From c5ae124e11f28f637cbd38cb4d6c1b9817baa135 Mon Sep 17 00:00:00 2001
+From: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
+Date: Mon, 12 Aug 2024 16:13:18 +0200
+Subject: [PATCH] kern/riscv/efi/init: Use time register in
+ grub_efi_get_time_ms()
+
+The cycle register is not guaranteed to count at constant frequency.
+If it is counting at all depends on the state the performance monitoring
+unit. Use the time register to measure time.
+
+Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
+Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
+---
+ grub-core/kern/riscv/efi/init.c | 15 +++++++--------
+ 1 file changed, 7 insertions(+), 8 deletions(-)
+
+diff --git a/grub-core/kern/riscv/efi/init.c b/grub-core/kern/riscv/efi/init.c
+index 38795fe67..0d7de4f54 100644
+--- a/grub-core/kern/riscv/efi/init.c
++++ b/grub-core/kern/riscv/efi/init.c
+@@ -33,16 +33,15 @@ grub_efi_get_time_ms (void)
+   grub_uint64_t tmr;
+ 
+ #if __riscv_xlen == 64
+-  asm volatile ("rdcycle %0" : "=r" (tmr));
++  asm volatile ("rdtime %0" : "=r"(tmr));
+ #else
+   grub_uint32_t lo, hi, tmp;
+-  asm volatile (
+-    "1:\n"
+-    "rdcycleh %0\n"
+-    "rdcycle %1\n"
+-    "rdcycleh %2\n"
+-    "bne %0, %2, 1b"
+-    : "=&r" (hi), "=&r" (lo), "=&r" (tmp));
++  asm volatile ("1:\n"
++                "rdtimeh %0\n"
++                "rdtime %1\n"
++                "rdtimeh %2\n"
++                "bne %0, %2, 1b"
++                : "=&r" (hi), "=&r" (lo), "=&r" (tmp));
+   tmr = ((grub_uint64_t)hi << 32) | lo;
+ #endif
+ 

0281-Use-medany-instead-of-large-model-for-RISCV.patch

@@ -0,0 +1,36 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Jason Montleon <jason@montleon.com>
+Date: Fri, 3 May 2024 13:18:37 -0400
+Subject: [PATCH] Use medany instead of large model for RISCV
+
+Signed-off-by: Jason Montleon <jason@montleon.com>
+---
+ configure.ac | 6 ++++--
+ 1 file changed, 4 insertions(+), 2 deletions(-)
+
+diff --git a/configure.ac b/configure.ac
+index d223fe3ef6e..6a6688e362a 100644
+--- a/configure.ac
++++ b/configure.ac
+@@ -1313,7 +1313,7 @@ AC_SUBST(TARGET_LDFLAGS_OLDMAGIC)
+ 
+ LDFLAGS="$TARGET_LDFLAGS"
+ 
+-if test "$target_cpu" = x86_64 || test "$target_cpu" = sparc64 || test "$target_cpu" = riscv64 ; then
++if test "$target_cpu" = x86_64 || test "$target_cpu" = sparc64 ; then
+   # Use large model to support 4G memory
+   AC_CACHE_CHECK([whether option -mcmodel=large works], grub_cv_cc_mcmodel, [
+     CFLAGS="$TARGET_CFLAGS -mcmodel=large"
+@@ -1323,9 +1323,11 @@ if test "$target_cpu" = x86_64 || test "$target_cpu" = sparc64 || test "$target_
+   ])
+   if test "x$grub_cv_cc_mcmodel" = xyes; then
+     TARGET_CFLAGS="$TARGET_CFLAGS -mcmodel=large"
+-  elif test "$target_cpu" = sparc64 || test "$target_cpu" = riscv64; then
++  elif test "$target_cpu" = sparc64; then
+     TARGET_CFLAGS="$TARGET_CFLAGS -mcmodel=medany"
+   fi
++elif test "$target_cpu" = riscv64 ; then
++    TARGET_CFLAGS="$TARGET_CFLAGS -mcmodel=medany"
+ fi
+ 
+ if test "$target_cpu"-"$platform" = x86_64-efi; then

grub.patches

@@ -250,20 +250,26 @@ Patch0249: 0249-grub-set-bootflag-Conservative-partial-fix-for-CVE-2.patch
 Patch0250: 0250-grub-set-bootflag-More-complete-fix-for-CVE-2024-104.patch
 Patch0251: 0251-grub-set-bootflag-Exit-calmly-when-not-running-as-ro.patch
 Patch0252: 0252-Makefile.core.def-fix-linux-module.patch
+%ifnarch riscv64
 Patch0253: 0253-Add-support-for-Linux-EFI-stub-loading-on-arm-archit.patch
 Patch0254: 0254-arm-arm64-loader-Better-memory-allocation-and-error-.patch
 Patch0255: 0255-arm64-Fix-EFI-loader-kernel-image-allocation.patch
+%endif
 Patch0256: 0256-pe-add-the-DOS-header-struct-and-fix-some-bad-naming.patch
+%ifnarch riscv64
 Patch0257: 0257-Correct-BSS-zeroing-on-aarch64.patch
 Patch0258: 0258-arm64-Use-proper-memory-type-for-kernel-allocation.patch
+%endif
 Patch0259: 0259-normal-Remove-grub_env_set-prefix-in-grub_try_normal.patch
 Patch0260: 0260-fs-xfs-Handle-non-continuous-data-blocks-in-director.patch
 Patch0261: 0261-Ignore-warnings-for-incompatible-types.patch
 Patch0262: 0262-cmd-search-Rework-of-CVE-2023-4001-fix.patch
+%ifnarch riscv64
 Patch0263: 0263-loader-efi-linux.c-read-the-kernel-image-before-head.patch
 Patch0264: 0264-nx-set-attrs-in-our-kernel-loaders.patch
 Patch0265: 0265-efi-Provide-wrappers-for-load_image-start_image.patch
 Patch0266: 0266-efi-Disallow-fallback-to-legacy-Linux-loader-when-sh.patch
+%endif
 Patch0267: 0267-Set-non-executable-stack-sections-on-EFI-assembly-fi.patch
 Patch0268: 0268-grub-mkconfig.in-turn-off-executable-owner-bit.patch
 Patch0269: 0269-kern-ieee1275-init-Add-IEEE-1275-Radix-support-for-K.patch
@@ -273,7 +279,11 @@ Patch0272: 0272-grub-mkconfig-Remove-check-for-mount-point-for-grub-.patch
 Patch0273: 0273-efi-api.h-include-missing-__grub_efi_api-macros-on-E.patch
 Patch0274: 0274-grub-core-net-arp.c-fix-variable-name.patch
 Patch0275: 0275-load-EFI-commands-inside-test-expressions.patch
+%ifnarch riscv64
 Patch0276: 0276-efi-loader-Check-if-NX-is-required-in-grub_efi_linux.patch
+%endif
 Patch0277: 0277-Stop-grub.efi-from-always-printing-dynamic_load_symb.patch
 Patch0278: 0278-acpi-Fix-out-of-bounds-access-in-grub_acpi_xsdt_find.patch
 Patch0279: 0279-cmd-search-Fix-a-possible-NULL-ptr-dereference.patch
+Patch0280: 0280-kern-riscv-efi-init-Use-time-register-in-grub_efi_ge.patch
+Patch0281: 0281-Use-medany-instead-of-large-model-for-RISCV.patch

grub2.spec

@@ -17,7 +17,7 @@
 Name:		grub2
 Epoch:		1
 Version:	2.12
-Release:	11%{?dist}
+Release:	11.0.riscv64%{?dist}
 Summary:	Bootloader with support for Linux, Multiboot and more
 License:	GPL-3.0-or-later
 URL:		http://www.gnu.org/software/grub/
@@ -560,6 +560,10 @@ mv ${EFI_HOME}/grub.cfg.stb ${EFI_HOME}/grub.cfg
 %endif
 
 %changelog
+* Fri Nov 08 2024 Jason Montleon <jmontleo@redhat.com> - 2.12-11.0.riscv64
+- Add RISC-V specific patches
+- Disable ARM patches on RISC-V that break builds
+
 * Wed Oct 23 2024 Nicolas Frayer <nfrayer@redhat.com> 2.12-11
 - cmd/search: Fix a possible NULL ptr dereference