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xen: Prepare common code for Xen PVH support

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Some common code needs to be special cased for Xen PVH mode. This hits
mostly Xen PV mode specific areas.

Split include/grub/i386/pc/int_types.h off from
include/grub/i386/pc/int.h to support including this file later from
xen_pvh code without the grub_bios_interrupt definition.

Move definition of struct grub_e820_mmap_entry from
grub-core/mmap/i386/pc/mmap.c to include/grub/i386/memory.h in order
to make it usable from xen_pvh code.

Signed-off-by: Juergen Gross <jgross@suse.com>
Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
Tested-by: Hans van Kranenburg <hans@knorrie.org>
This commit is contained in:
Juergen Gross 2018-12-07 13:11:32 +01:00 committed by Vincent Batts
parent b85619206a
commit ef5fcec192
8 changed files with 76 additions and 47 deletions
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2
grub-core/kern/i386/tsc.c
View file

@ -65,7 +65,7 @@ grub_tsc_init (void)
tsc_boot_time = grub_get_tsc ();
#ifdef GRUB_MACHINE_XEN
#if defined (GRUB_MACHINE_XEN) || defined (GRUB_MACHINE_XEN_PVH)
(void) (grub_tsc_calibrate_from_xen () || calibrate_tsc_hardcode());
#elif defined (GRUB_MACHINE_EFI)
(void) (grub_tsc_calibrate_from_pmtimer () || grub_tsc_calibrate_from_pit () || grub_tsc_calibrate_from_efi() || calibrate_tsc_hardcode());

8
grub-core/mmap/i386/pc/mmap.c
View file

@ -42,14 +42,6 @@ extern grub_uint16_t grub_machine_mmaphook_kblow;
extern grub_uint16_t grub_machine_mmaphook_kbin16mb;
extern grub_uint16_t grub_machine_mmaphook_64kbin4gb;
struct grub_e820_mmap_entry
{
grub_uint64_t addr;
grub_uint64_t len;
grub_uint32_t type;
} GRUB_PACKED;
/* Helper for preboot. */
static int fill_hook (grub_uint64_t addr, grub_uint64_t size,
grub_memory_type_t type, void *data)

7
include/grub/i386/memory.h
View file

@ -44,6 +44,13 @@
#include <grub/types.h>
struct grub_e820_mmap_entry
{
grub_uint64_t addr;
grub_uint64_t len;
grub_uint32_t type;
} GRUB_PACKED;
grub_uint64_t grub_mmap_get_upper (void);
grub_uint64_t grub_mmap_get_lower (void);
grub_uint64_t grub_mmap_get_post64 (void);

36
include/grub/i386/pc/int.h
View file

@ -20,45 +20,11 @@
#define GRUB_INTERRUPT_MACHINE_HEADER 1
#include <grub/symbol.h>
#include <grub/types.h>
struct grub_bios_int_registers
{
grub_uint32_t eax;
grub_uint16_t es;
grub_uint16_t ds;
grub_uint16_t flags;
grub_uint16_t dummy;
grub_uint32_t ebx;
grub_uint32_t ecx;
grub_uint32_t edi;
grub_uint32_t esi;
grub_uint32_t edx;
};
#define GRUB_CPU_INT_FLAGS_CARRY 0x1
#define GRUB_CPU_INT_FLAGS_PARITY 0x4
#define GRUB_CPU_INT_FLAGS_ADJUST 0x10
#define GRUB_CPU_INT_FLAGS_ZERO 0x40
#define GRUB_CPU_INT_FLAGS_SIGN 0x80
#define GRUB_CPU_INT_FLAGS_TRAP 0x100
#define GRUB_CPU_INT_FLAGS_INTERRUPT 0x200
#define GRUB_CPU_INT_FLAGS_DIRECTION 0x400
#define GRUB_CPU_INT_FLAGS_OVERFLOW 0x800
#ifdef GRUB_MACHINE_PCBIOS
#define GRUB_CPU_INT_FLAGS_DEFAULT GRUB_CPU_INT_FLAGS_INTERRUPT
#else
#define GRUB_CPU_INT_FLAGS_DEFAULT 0
#endif
#include <grub/i386/pc/int_types.h>
void EXPORT_FUNC (grub_bios_interrupt) (grub_uint8_t intno,
struct grub_bios_int_registers *regs)
__attribute__ ((regparm(3)));
struct grub_i386_idt
{
grub_uint16_t limit;
grub_uint32_t base;
} GRUB_PACKED;
#ifdef GRUB_MACHINE_PCBIOS
extern struct grub_i386_idt *EXPORT_VAR(grub_realidt);

59
include/grub/i386/pc/int_types.h Normal file
View file

@ -0,0 +1,59 @@
/*
* 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_INTERRUPT_TYPES_MACHINE_HEADER
#define GRUB_INTERRUPT_TYPES_MACHINE_HEADER 1
#include <grub/types.h>
#define GRUB_CPU_INT_FLAGS_CARRY 0x1
#define GRUB_CPU_INT_FLAGS_PARITY 0x4
#define GRUB_CPU_INT_FLAGS_ADJUST 0x10
#define GRUB_CPU_INT_FLAGS_ZERO 0x40
#define GRUB_CPU_INT_FLAGS_SIGN 0x80
#define GRUB_CPU_INT_FLAGS_TRAP 0x100
#define GRUB_CPU_INT_FLAGS_INTERRUPT 0x200
#define GRUB_CPU_INT_FLAGS_DIRECTION 0x400
#define GRUB_CPU_INT_FLAGS_OVERFLOW 0x800
#ifdef GRUB_MACHINE_PCBIOS
#define GRUB_CPU_INT_FLAGS_DEFAULT GRUB_CPU_INT_FLAGS_INTERRUPT
#else
#define GRUB_CPU_INT_FLAGS_DEFAULT 0
#endif
struct grub_bios_int_registers
{
grub_uint32_t eax;
grub_uint16_t es;
grub_uint16_t ds;
grub_uint16_t flags;
grub_uint16_t dummy;
grub_uint32_t ebx;
grub_uint32_t ecx;
grub_uint32_t edi;
grub_uint32_t esi;
grub_uint32_t edx;
};
struct grub_i386_idt
{
grub_uint16_t limit;
grub_uint32_t base;
} GRUB_PACKED;
#endif

2
include/grub/i386/tsc.h
View file

@ -54,7 +54,7 @@ grub_get_tsc (void)
static __inline int
grub_cpu_is_tsc_supported (void)
{
#ifndef GRUB_MACHINE_XEN
#if !defined(GRUB_MACHINE_XEN) && !defined(GRUB_MACHINE_XEN_PVH)
grub_uint32_t a,b,c,d;
if (! grub_cpu_is_cpuid_supported ())
return 0;

5
include/grub/i386/xen/hypercall.h
View file

@ -26,7 +26,10 @@ EXPORT_FUNC (grub_xen_hypercall) (grub_uint32_t callno, grub_uint32_t a0,
grub_uint32_t a1, grub_uint32_t a2,
grub_uint32_t a3, grub_uint32_t a4,
grub_uint32_t a5)
__attribute__ ((regparm (3), cdecl));
#ifdef GRUB_MACHINE_XEN
__attribute__ ((regparm (3), cdecl))
#endif
;
static inline int
grub_xen_sched_op (int cmd, void *arg)

4
include/grub/kernel.h
View file

@ -79,7 +79,9 @@ struct grub_module_info64
#if defined (GRUB_MACHINE_PCBIOS) || defined (GRUB_MACHINE_COREBOOT) \
|| defined (GRUB_MACHINE_MULTIBOOT) || defined (GRUB_MACHINE_MIPS_QEMU_MIPS) \
|| defined (GRUB_MACHINE_MIPS_LOONGSON) || defined (GRUB_MACHINE_ARC) \
|| (defined (__sparc__) && defined (GRUB_MACHINE_IEEE1275)) || defined (GRUB_MACHINE_UBOOT) || defined (GRUB_MACHINE_XEN)
|| (defined (__sparc__) && defined (GRUB_MACHINE_IEEE1275)) \
|| defined (GRUB_MACHINE_UBOOT) || defined (GRUB_MACHINE_XEN) \
|| defined(GRUB_MACHINE_XEN_PVH)
/* FIXME: stack is between 2 heap regions. Move it. */
#define GRUB_KERNEL_PRELOAD_SPACE_REUSABLE 1
#endif