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RISC-V: Add to build system

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This patch adds support for RISC-V to the grub build system. With this
patch, I can successfully build grub on RISC-V as a UEFI application.

Signed-off-by: Alexander Graf <agraf@suse.de>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Tested-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
This commit is contained in:
Alexander Graf 2019-02-12 11:31:07 +01:00 • committed by Daniel Kiper
parent e795b9011f
commit f1957dc8a3
22 changed files with 201 additions and 21 deletions
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28
configure.ac
View file

@ -104,6 +104,12 @@ case "$target_cpu" in
aarch64*)
target_cpu=arm64
;;
riscv32*)
target_cpu=riscv32
;;
riscv64*)
target_cpu=riscv64
;;
esac
# Specify the platform (such as firmware).
@ -127,6 +133,8 @@ if test "x$with_platform" = x; then
ia64-*) platform=efi ;;
arm-*) platform=uboot ;;
arm64-*) platform=efi ;;
riscv32-*) platform=efi ;;
riscv64-*) platform=efi ;;
*)
AC_MSG_WARN([unsupported CPU: "$target_cpu" - only building utilities])
platform=none
@ -175,6 +183,8 @@ case "$target_cpu"-"$platform" in
arm-coreboot) ;;
arm-efi) ;;
arm64-efi) ;;
riscv32-efi) ;;
riscv64-efi) ;;
*-emu) ;;
*-none) ;;
*) AC_MSG_ERROR([platform "$platform" is not supported for target CPU "$target_cpu"]) ;;
@ -828,6 +838,16 @@ if test x"$platform" != xemu ; then
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[]])],
[grub_cv_target_cc_soft_float="-mgeneral-regs-only"], [])
fi
if test "x$target_cpu" = xriscv32; then
CFLAGS="$TARGET_CFLAGS -march=rv32imac -mabi=ilp32 -Werror"
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[]])],
[grub_cv_target_cc_soft_float="-march=rv32imac -mabi=ilp32"], [])
fi
if test "x$target_cpu" = xriscv64; then
CFLAGS="$TARGET_CFLAGS -march=rv64imac -mabi=lp64 -Werror"
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[]])],
[grub_cv_target_cc_soft_float="-march=rv64imac -mabi=lp64"], [])
fi
if test "x$target_cpu" = xia64; then
CFLAGS="$TARGET_CFLAGS -mno-inline-float-divide -mno-inline-sqrt -Werror"
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[]])],
@ -1143,7 +1163,7 @@ AC_SUBST(TARGET_LDFLAGS_OLDMAGIC)
LDFLAGS="$TARGET_LDFLAGS"
if test "$target_cpu" = x86_64 || test "$target_cpu" = sparc64 ; then
if test "$target_cpu" = x86_64 || test "$target_cpu" = sparc64 || test "$target_cpu" = riscv64 ; then
# Use large model to support 4G memory
AC_CACHE_CHECK([whether option -mcmodel=large works], grub_cv_cc_mcmodel, [
CFLAGS="$TARGET_CFLAGS -mcmodel=large"
@ -1153,7 +1173,7 @@ if test "$target_cpu" = x86_64 || test "$target_cpu" = sparc64 ; then
])
if test "x$grub_cv_cc_mcmodel" = xyes; then
TARGET_CFLAGS="$TARGET_CFLAGS -mcmodel=large"
elif test "$target_cpu" = sparc64; then
elif test "$target_cpu" = sparc64 || test "$target_cpu" = riscv64; then
TARGET_CFLAGS="$TARGET_CFLAGS -mcmodel=medany"
fi
fi
@ -1916,6 +1936,10 @@ AM_CONDITIONAL([COND_arm_coreboot], [test x$target_cpu = xarm -a x$platform = xc
AM_CONDITIONAL([COND_arm_efi], [test x$target_cpu = xarm -a x$platform = xefi])
AM_CONDITIONAL([COND_arm64], [test x$target_cpu = xarm64 ])
AM_CONDITIONAL([COND_arm64_efi], [test x$target_cpu = xarm64 -a x$platform = xefi])
AM_CONDITIONAL([COND_riscv32], [test x$target_cpu = xriscv32 ])
AM_CONDITIONAL([COND_riscv64], [test x$target_cpu = xriscv64 ])
AM_CONDITIONAL([COND_riscv32_efi], [test x$target_cpu = xriscv32 -a x$platform = xefi])
AM_CONDITIONAL([COND_riscv64_efi], [test x$target_cpu = xriscv64 -a x$platform = xefi])
AM_CONDITIONAL([COND_HOST_HURD], [test x$host_kernel = xhurd])
AM_CONDITIONAL([COND_HOST_LINUX], [test x$host_kernel = xlinux])