xen: Add basic hooks for PVH in current code

Add the hooks to current code needed for Xen PVH. They will be filled
with code later when the related functionality is being added.

loader/i386/linux.c needs to include machine/kernel.h now as it needs
to get GRUB_KERNEL_USE_RSDP_ADDR from there. This in turn requires to
add an empty kernel.h header for some i386 platforms (efi, coreboot,
ieee1275, xen) and for x86_64 efi.

Signed-off-by: Juergen Gross <jgross@suse.com>
Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
Tested-by: Hans van Kranenburg <hans@knorrie.org>

diff --git a/grub-core/Makefile.am b/grub-core/Makefile.am
index f4ff62b769ae99f1d9b2fadf51378966c93d835c..a27786ab0ec9abb85533d90fb10e5fbe38dd4577 100644 (file)
--- a/grub-core/Makefile.am
+++ b/grub-core/Makefile.am
@@ -102,6 +102,7 @@ KERNEL_HEADER_FILES += $(top_srcdir)/include/grub/i386/tsc.h
 endif
 
 if COND_i386_efi
+KERNEL_HEADER_FILES += $(top_builddir)/include/grub/machine/kernel.h
 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/i386/tsc.h
@@ -111,6 +112,7 @@ KERNEL_HEADER_FILES += $(top_srcdir)/include/grub/i386/pmtimer.h
 endif
 
 if COND_i386_coreboot
+KERNEL_HEADER_FILES += $(top_builddir)/include/grub/machine/kernel.h
 KERNEL_HEADER_FILES += $(top_srcdir)/include/grub/i386/tsc.h
 KERNEL_HEADER_FILES += $(top_srcdir)/include/grub/coreboot/lbio.h
 KERNEL_HEADER_FILES += $(top_srcdir)/include/grub/video.h
@@ -122,6 +124,7 @@ KERNEL_HEADER_FILES += $(top_srcdir)/include/grub/acpi.h
 endif
 
 if COND_i386_multiboot
+KERNEL_HEADER_FILES += $(top_builddir)/include/grub/machine/kernel.h
 KERNEL_HEADER_FILES += $(top_srcdir)/include/grub/i386/tsc.h
 KERNEL_HEADER_FILES += $(top_srcdir)/include/grub/acpi.h
 endif
@@ -132,6 +135,7 @@ KERNEL_HEADER_FILES += $(top_srcdir)/include/grub/i386/tsc.h
 endif
 
 if COND_i386_ieee1275
+KERNEL_HEADER_FILES += $(top_builddir)/include/grub/machine/kernel.h
 KERNEL_HEADER_FILES += $(top_srcdir)/include/grub/ieee1275/ieee1275.h
 KERNEL_HEADER_FILES += $(top_srcdir)/include/grub/terminfo.h
 KERNEL_HEADER_FILES += $(top_srcdir)/include/grub/extcmd.h
@@ -140,6 +144,7 @@ KERNEL_HEADER_FILES += $(top_srcdir)/include/grub/i386/tsc.h
 endif
 
 if COND_i386_xen
+KERNEL_HEADER_FILES += $(top_builddir)/include/grub/machine/kernel.h
 KERNEL_HEADER_FILES += $(top_srcdir)/include/grub/xen.h
 KERNEL_HEADER_FILES += $(top_srcdir)/include/grub/i386/xen/hypercall.h
 KERNEL_HEADER_FILES += $(top_srcdir)/include/grub/terminfo.h
@@ -158,6 +163,7 @@ KERNEL_HEADER_FILES += $(top_srcdir)/include/grub/loader.h
 endif
 
 if COND_x86_64_efi
+KERNEL_HEADER_FILES += $(top_builddir)/include/grub/machine/kernel.h
 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/i386/tsc.h

diff --git a/grub-core/kern/i386/xen/pvh.c b/grub-core/kern/i386/xen/pvh.c
new file mode 100644 (file)
index 0000000..4f629b1
--- /dev/null
+++ b/grub-core/kern/i386/xen/pvh.c
@@ -0,0 +1,37 @@
+/*
+ *  GRUB  --  GRand Unified Bootloader
+ *  Copyright (C) 2018  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/kernel.h>
+#include <grub/misc.h>
+#include <grub/memory.h>
+#include <grub/mm.h>
+#include <grub/xen.h>
+#include <xen/hvm/start_info.h>
+#include <grub/machine/kernel.h>
+
+grub_uint64_t grub_rsdp_addr;
+
+void
+grub_xen_setup_pvh (void)
+{
+}
+
+grub_err_t
+grub_machine_mmap_iterate (grub_memory_hook_t hook, void *hook_data)
+{
+}

diff --git a/grub-core/kern/i386/xen/startup_pvh.S b/grub-core/kern/i386/xen/startup_pvh.S
new file mode 100644 (file)
index 0000000..69b8fdc
--- /dev/null
+++ b/grub-core/kern/i386/xen/startup_pvh.S
@@ -0,0 +1,29 @@
+/* startup.S - bootstrap GRUB itself */
+/*
+ *  GRUB  --  GRand Unified Bootloader
+ *  Copyright (C) 2018  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 <config.h>
+#include <grub/symbol.h>
+
+       .file   "startup_pvh.S"
+       .text
+
+/* Saved pointer to start info structure. */
+       .globl  pvh_start_info
+pvh_start_info:
+       .long   0

diff --git a/grub-core/kern/xen/init.c b/grub-core/kern/xen/init.c
index a23dad633e014f3aba163ed7a81b859246c57197..782ca72952af6e1db55f3f7f227b8bf248dd39c3 100644 (file)
--- a/grub-core/kern/xen/init.c
+++ b/grub-core/kern/xen/init.c
@@ -564,6 +564,10 @@ grub_machine_init (void)
                           + GRUB_KERNEL_MACHINE_MOD_GAP,
                           GRUB_KERNEL_MACHINE_MOD_ALIGN);
 
+#ifdef GRUB_MACHINE_XEN_PVH
+  grub_xen_setup_pvh ();
+#endif
+
   grub_xen_setup_gnttab ();
 
 #ifdef GRUB_MACHINE_XEN

diff --git a/grub-core/loader/i386/linux.c b/grub-core/loader/i386/linux.c
index 375ee80dc6b99336b407a50d7d2d6d597dbe9360..b6015913b2ae4a24437a2c0e5f1efa0c37f6885d 100644 (file)
--- a/grub-core/loader/i386/linux.c
+++ b/grub-core/loader/i386/linux.c
@@ -35,6 +35,7 @@
 #include <grub/i18n.h>
 #include <grub/lib/cmdline.h>
 #include <grub/linux.h>
+#include <grub/machine/kernel.h>
 
 GRUB_MOD_LICENSE ("GPLv3+");
 

diff --git a/include/grub/i386/coreboot/kernel.h b/include/grub/i386/coreboot/kernel.h
new file mode 100644 (file)
index 0000000..e69de29

diff --git a/include/grub/i386/efi/kernel.h b/include/grub/i386/efi/kernel.h
new file mode 100644 (file)
index 0000000..e69de29

diff --git a/include/grub/i386/ieee1275/kernel.h b/include/grub/i386/ieee1275/kernel.h
new file mode 100644 (file)
index 0000000..e69de29

diff --git a/include/grub/i386/xen/kernel.h b/include/grub/i386/xen/kernel.h
new file mode 100644 (file)
index 0000000..e69de29

diff --git a/include/grub/i386/xen_pvh/kernel.h b/include/grub/i386/xen_pvh/kernel.h
new file mode 100644 (file)
index 0000000..2b7b8a1
--- /dev/null
+++ b/include/grub/i386/xen_pvh/kernel.h
@@ -0,0 +1,30 @@
+/*
+ *  GRUB  --  GRand Unified Bootloader
+ *  Copyright (C) 2018  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/>.
+ */
+
+#ifndef GRUB_KERNEL_MACHINE_HEADER
+#define GRUB_KERNEL_MACHINE_HEADER     1
+
+#ifndef ASM_FILE
+
+#define GRUB_KERNEL_USE_RSDP_ADDR      1
+
+extern grub_uint64_t EXPORT_VAR(grub_rsdp_addr);
+
+#endif /* ! ASM_FILE */
+
+#endif /* GRUB_KERNEL_MACHINE_HEADER */

diff --git a/include/grub/x86_64/efi/kernel.h b/include/grub/x86_64/efi/kernel.h
new file mode 100644 (file)
index 0000000..e69de29

diff --git a/include/grub/xen.h b/include/grub/xen.h
index c31cc10c725ab46fbcc7a8931205847e4e1318c3..91cb7cf81fdd71588fb8ec2894606388dbb30265 100644 (file)
--- a/include/grub/xen.h
+++ b/include/grub/xen.h
@@ -95,6 +95,11 @@ typedef grub_uint64_t grub_xen_mfn_t;
 typedef grub_uint32_t grub_xen_mfn_t;
 #endif
 typedef unsigned int grub_xen_evtchn_t;
+
+#ifdef GRUB_MACHINE_XEN_PVH
+extern struct hvm_start_info *pvh_start_info;
+void grub_xen_setup_pvh (void);
+#endif
 #endif
 
 #endif