mips64: Add support for Loongson.

Author: heiher

configure.ac

@@ -110,15 +110,15 @@ case "$target_cpu" in
   amd64)	target_cpu=x86_64 ;;
   sparc)	target_cpu=sparc64 ;;
   mips64el)
-                target_cpu=mips64el
+    target_cpu=mips64el
 		machine_CPPFLAGS="$machine_CPPFLAGS -DGRUB_CPU_MIPS64EL=1"
 		;;
   mipsel)
-                target_cpu=mipsel
+    target_cpu=mipsel
 		machine_CPPFLAGS="$machine_CPPFLAGS -DGRUB_CPU_MIPSEL=1"
 		;;
   mips|mips64)
-                target_cpu=mips
+    target_cpu=mips
 		machine_CPPFLAGS="$machine_CPPFLAGS -DGRUB_CPU_MIPS=1"
 		;;
   arm*)		target_cpu=arm ;;

grub-core/Makefile.am

@@ -243,6 +243,7 @@ if COND_mips64_efi
 KERNEL_HEADER_FILES += $(top_srcdir)/include/grub/efi/efi.h
 KERNEL_HEADER_FILES += $(top_srcdir)/include/grub/efi/disk.h
 KERNEL_HEADER_FILES += $(top_srcdir)/include/grub/acpi.h
+KERNEL_HEADER_FILES += $(top_builddir)/include/grub/machine/loongson.h
 endif
 
 if COND_powerpc_ieee1275

grub-core/Makefile.core.def

@@ -337,6 +337,9 @@ kernel = {
   mips64 = kern/mips64/cache.S;
   mips64 = kern/generic/rtc_get_time_ms.c;
   mips64_efi = kern/mips64/efi/init.c;
+  mips64_efi = kern/mips64/efi/loongson.c;
+  mips64_efi = lib/mips64/efi/loongson.c;
+  mips64_efi = lib/mips64/efi/loongson_asm.S;
 
   powerpc_ieee1275 = kern/powerpc/cache.S;
   powerpc_ieee1275 = kern/powerpc/dl.c;

grub-core/kern/mips64/efi/init.c

@@ -24,21 +24,61 @@
 #include <grub/cpu/time.h>
 #include <grub/efi/efi.h>
 #include <grub/loader.h>
+#include <grub/machine/loongson.h>
+
+static grub_uint64_t tmr;
+static grub_efi_event_t tmr_evt;
+
+static grub_uint64_t
+grub_efi_get_time_ms (void)
+{
+  return tmr;
+}
+
+static void
+grub_loongson_increment_timer (grub_efi_event_t event __attribute__ ((unused)),
+                 void *context __attribute__ ((unused)))
+{
+  tmr += 10;
+}
+
+
 
 void
 grub_machine_init (void)
 {
+  grub_efi_boot_services_t *b;
+
   grub_efi_init ();
 
-  /* FIXME: Get cpuclock from EFI. */
-  grub_timer_init (1000000000U);
+  b = grub_efi_system_table->boot_services;
+  efi_call_5 (b->create_event, GRUB_EFI_EVT_TIMER | GRUB_EFI_EVT_NOTIFY_SIGNAL,
+              GRUB_EFI_TPL_CALLBACK, grub_loongson_increment_timer, NULL, &tmr_evt);
+  efi_call_3 (b->set_timer, tmr_evt, GRUB_EFI_TIMER_PERIODIC, 100000);
+
+  grub_install_get_time_ms (grub_efi_get_time_ms);
+
+  if (grub_efi_is_loongson ())
+    grub_efi_loongson_init ();
+  else
+    /* FIXME: Get cpuclock from EFI. */
+    grub_timer_init (1000000000U);
 }
 
 void
 grub_machine_fini (int flags)
 {
+  grub_efi_boot_services_t *b;
+
   if (!(flags & GRUB_LOADER_FLAG_NORETURN))
     return;
 
+  b = grub_efi_system_table->boot_services;
+
+  efi_call_3 (b->set_timer, tmr_evt, GRUB_EFI_TIMER_CANCEL, 0);
+  efi_call_1 (b->close_event, tmr_evt);
+
+  if (grub_efi_is_loongson ())
+    grub_efi_loongson_fini ();
   grub_efi_fini ();
 }

grub-core/kern/mips64/efi/loongson.c

@@ -0,0 +1,32 @@
+/*
+ *  GRUB  --  GRand Unified Bootloader
+ *  Copyright (C) 2017 Free Software Foundation, Inc.
+ *
+ *  GRUB is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  GRUB is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with GRUB.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <grub/efi/efi.h>
+#include <grub/cpu/time.h>
+#include <grub/loader.h>
+#include <grub/machine/loongson.h>
+
+void
+grub_efi_loongson_init (void)
+{
+}
+
+void
+grub_efi_loongson_fini (void)
+{
+}