mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2025-01-12 00:34:43 +08:00
3a63f70bf4
The RSDP is needed by KASLR so parse it early and save it in
boot_params.acpi_rsdp_addr, before KASLR setup runs.
RSDP is needed by other kernel facilities so have the parsing code
built-in instead of a long "depends on" line in Kconfig.
[ bp:
- Trim commit message and comments
- Add CONFIG_ACPI dependency in the Makefile
- Move ->acpi_rsdp_addr assignment with the rest of boot_params massaging in extract_kernel().
]
Signed-off-by: Chao Fan <fanc.fnst@cn.fujitsu.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: bhe@redhat.com
Cc: Cao jin <caoj.fnst@cn.fujitsu.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: indou.takao@jp.fujitsu.com
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Juergen Gross <jgross@suse.com>
Cc: kasong@redhat.com
Cc: Kees Cook <keescook@chromium.org>
Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
Cc: Masahiro Yamada <yamada.masahiro@socionext.com>
Cc: msys.mizuma@gmail.com
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Tom Lendacky <thomas.lendacky@amd.com>
Cc: x86-ml <x86@kernel.org>
Link: https://lkml.kernel.org/r/20190123110850.12433-6-fanc.fnst@cn.fujitsu.com
129 lines
3.0 KiB
C
129 lines
3.0 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
#ifndef BOOT_COMPRESSED_MISC_H
|
|
#define BOOT_COMPRESSED_MISC_H
|
|
|
|
/*
|
|
* Special hack: we have to be careful, because no indirections are allowed here,
|
|
* and paravirt_ops is a kind of one. As it will only run in baremetal anyway,
|
|
* we just keep it from happening. (This list needs to be extended when new
|
|
* paravirt and debugging variants are added.)
|
|
*/
|
|
#undef CONFIG_PARAVIRT
|
|
#undef CONFIG_PARAVIRT_XXL
|
|
#undef CONFIG_PARAVIRT_SPINLOCKS
|
|
#undef CONFIG_KASAN
|
|
|
|
/* cpu_feature_enabled() cannot be used this early */
|
|
#define USE_EARLY_PGTABLE_L5
|
|
|
|
#include <linux/linkage.h>
|
|
#include <linux/screen_info.h>
|
|
#include <linux/elf.h>
|
|
#include <linux/io.h>
|
|
#include <asm/page.h>
|
|
#include <asm/boot.h>
|
|
#include <asm/bootparam.h>
|
|
#include <asm/bootparam_utils.h>
|
|
|
|
#define BOOT_CTYPE_H
|
|
#include <linux/acpi.h>
|
|
|
|
#define BOOT_BOOT_H
|
|
#include "../ctype.h"
|
|
|
|
#ifdef CONFIG_X86_64
|
|
#define memptr long
|
|
#else
|
|
#define memptr unsigned
|
|
#endif
|
|
|
|
/* misc.c */
|
|
extern memptr free_mem_ptr;
|
|
extern memptr free_mem_end_ptr;
|
|
extern struct boot_params *boot_params;
|
|
void __putstr(const char *s);
|
|
void __puthex(unsigned long value);
|
|
#define error_putstr(__x) __putstr(__x)
|
|
#define error_puthex(__x) __puthex(__x)
|
|
|
|
#ifdef CONFIG_X86_VERBOSE_BOOTUP
|
|
|
|
#define debug_putstr(__x) __putstr(__x)
|
|
#define debug_puthex(__x) __puthex(__x)
|
|
#define debug_putaddr(__x) { \
|
|
debug_putstr(#__x ": 0x"); \
|
|
debug_puthex((unsigned long)(__x)); \
|
|
debug_putstr("\n"); \
|
|
}
|
|
|
|
#else
|
|
|
|
static inline void debug_putstr(const char *s)
|
|
{ }
|
|
static inline void debug_puthex(const char *s)
|
|
{ }
|
|
#define debug_putaddr(x) /* */
|
|
|
|
#endif
|
|
|
|
#if CONFIG_EARLY_PRINTK || CONFIG_RANDOMIZE_BASE
|
|
/* cmdline.c */
|
|
int cmdline_find_option(const char *option, char *buffer, int bufsize);
|
|
int cmdline_find_option_bool(const char *option);
|
|
#endif
|
|
|
|
|
|
#if CONFIG_RANDOMIZE_BASE
|
|
/* kaslr.c */
|
|
void choose_random_location(unsigned long input,
|
|
unsigned long input_size,
|
|
unsigned long *output,
|
|
unsigned long output_size,
|
|
unsigned long *virt_addr);
|
|
/* cpuflags.c */
|
|
bool has_cpuflag(int flag);
|
|
#else
|
|
static inline void choose_random_location(unsigned long input,
|
|
unsigned long input_size,
|
|
unsigned long *output,
|
|
unsigned long output_size,
|
|
unsigned long *virt_addr)
|
|
{
|
|
}
|
|
#endif
|
|
|
|
#ifdef CONFIG_X86_64
|
|
void initialize_identity_maps(void);
|
|
void add_identity_map(unsigned long start, unsigned long size);
|
|
void finalize_identity_maps(void);
|
|
extern unsigned char _pgtable[];
|
|
#else
|
|
static inline void initialize_identity_maps(void)
|
|
{ }
|
|
static inline void add_identity_map(unsigned long start, unsigned long size)
|
|
{ }
|
|
static inline void finalize_identity_maps(void)
|
|
{ }
|
|
#endif
|
|
|
|
#ifdef CONFIG_EARLY_PRINTK
|
|
/* early_serial_console.c */
|
|
extern int early_serial_base;
|
|
void console_init(void);
|
|
#else
|
|
static const int early_serial_base;
|
|
static inline void console_init(void)
|
|
{ }
|
|
#endif
|
|
|
|
void set_sev_encryption_mask(void);
|
|
|
|
#endif
|
|
|
|
/* acpi.c */
|
|
#ifdef CONFIG_ACPI
|
|
acpi_physical_address get_rsdp_addr(void);
|
|
#else
|
|
static inline acpi_physical_address get_rsdp_addr(void) { return 0; }
|
|
#endif
|