Thomas Heijligen has uploaded this change for review. ( https://review.coreboot.org/c/flashrom/+/60111 )
Change subject: hwaccess physmap: split out x86 msr code into own files ......................................................................
hwaccess physmap: split out x86 msr code into own files
Change-Id: Idc9ce9df3ea1e291ad469de59467646b294119c4 Signed-off-by: Thomas Heijligen thomas.heijligen@secunet.com --- M Makefile M board_enable.c M chipset_enable.c M hwaccess.h A hwaccess_x86_msr.c A hwaccess_x86_msr.h M meson.build M physmap.c M programmer.h 9 files changed, 405 insertions(+), 359 deletions(-)
git pull ssh://review.coreboot.org:29418/flashrom refs/changes/11/60111/1
diff --git a/Makefile b/Makefile index 7207abb..72146ce 100644 --- a/Makefile +++ b/Makefile @@ -783,7 +783,7 @@ ifneq ($(NEED_RAW_ACCESS), ) # Raw memory, MSR or PCI port I/O access. FEATURE_CFLAGS += -D'NEED_RAW_ACCESS=1' -D'__FLASHROM_HAVE_OUTB__=1' -PROGRAMMER_OBJS += physmap.o hwaccess.o hwaccess_x86_io.o +PROGRAMMER_OBJS += physmap.o hwaccess.o hwaccess_x86_io.o hwaccess_x86_msr.o
ifeq ($(TARGET_OS), NetBSD) ifeq ($(ARCH), x86) diff --git a/board_enable.c b/board_enable.c index 4ca7101..445e354 100644 --- a/board_enable.c +++ b/board_enable.c @@ -27,6 +27,7 @@ #include "programmer.h" #include "hwaccess.h" #include "hwaccess_x86_io.h" +#include "hwaccess_x86_msr.h" #include "platform/pci.h"
#if defined(__i386__) || defined(__x86_64__) diff --git a/chipset_enable.c b/chipset_enable.c index 517918e..22af681 100644 --- a/chipset_enable.c +++ b/chipset_enable.c @@ -35,6 +35,7 @@ #include "programmer.h" #include "hwaccess.h" #include "hwaccess_x86_io.h" +#include "hwaccess_x86_msr.h" #include "platform/pci.h"
#define NOT_DONE_YET 1 diff --git a/hwaccess.h b/hwaccess.h index 5b7b079..d80e0e3 100644 --- a/hwaccess.h +++ b/hwaccess.h @@ -122,35 +122,4 @@ #define le_to_cpu32 cpu_to_le32 #define le_to_cpu64 cpu_to_le64
-#if NEED_RAW_ACCESS == 1 && (defined (__i386__) || defined (__x86_64__) || defined(__amd64__)) - -#if !(defined(__MACH__) && defined(__APPLE__)) && !defined(__FreeBSD__) && !defined(__FreeBSD_kernel__) && !defined(__DragonFly__) && !defined(__LIBPAYLOAD__) -typedef struct { uint32_t hi, lo; } msr_t; -msr_t rdmsr(int addr); -int wrmsr(int addr, msr_t msr); -#endif -#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__) -/* FreeBSD already has conflicting definitions for wrmsr/rdmsr. */ -#undef rdmsr -#undef wrmsr -#define rdmsr freebsd_rdmsr -#define wrmsr freebsd_wrmsr -typedef struct { uint32_t hi, lo; } msr_t; -msr_t freebsd_rdmsr(int addr); -int freebsd_wrmsr(int addr, msr_t msr); -#endif -#if defined(__LIBPAYLOAD__) -#include <arch/io.h> -#include <arch/msr.h> -typedef struct { uint32_t hi, lo; } msr_t; -msr_t libpayload_rdmsr(int addr); -int libpayload_wrmsr(int addr, msr_t msr); -#undef rdmsr -#define rdmsr libpayload_rdmsr -#define wrmsr libpayload_wrmsr -#endif - - -#endif - #endif /* !__HWACCESS_H__ */ diff --git a/hwaccess_x86_msr.c b/hwaccess_x86_msr.c new file mode 100644 index 0000000..fa7df72 --- /dev/null +++ b/hwaccess_x86_msr.c @@ -0,0 +1,348 @@ +/* + * This file is part of the flashrom project. + * + * Copyright (C) 2009 Peter Stuge peter@stuge.se + * Copyright (C) 2009 coresystems GmbH + * Copyright (C) 2010 Carl-Daniel Hailfinger + * Copyright (C) 2010 Rudolf Marek r.marek@assembler.cz + * + * This program 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; version 2 of the License. + * + * This program 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. + */ + +/* MSR abstraction implementations for Linux, OpenBSD, FreeBSD/Dragonfly, OSX, libpayload + * and a non-working default implementation on the bottom. See also hwaccess.h for some (re)declarations. + */ + +#include "hwaccess_x86_msr.h" +#include "flash.h" + +#ifdef __linux__ +/* + * Reading and writing to MSRs, however requires instructions rdmsr/wrmsr, + * which are ring0 privileged instructions so only the kernel can do the + * read/write. This function, therefore, requires that the msr kernel module + * be loaded to access these instructions from user space using device + * /dev/cpu/0/msr. + */ + +#include <stdint.h> +#include <stdlib.h> +#include <errno.h> +#include <fcntl.h> +#include <string.h> +#include <unistd.h> + +static int fd_msr = -1; + +msr_t rdmsr(int addr) +{ + uint32_t buf[2]; + msr_t msr = { 0xffffffff, 0xffffffff }; + + if (lseek(fd_msr, (off_t) addr, SEEK_SET) == -1) { + msg_perr("Could not lseek() MSR: %s\n", strerror(errno)); + close(fd_msr); + exit(1); + } + + if (read(fd_msr, buf, 8) == 8) { + msr.lo = buf[0]; + msr.hi = buf[1]; + return msr; + } + + if (errno != EIO) { + // A severe error. + msg_perr("Could not read() MSR: %s\n", strerror(errno)); + close(fd_msr); + exit(1); + } + + return msr; +} + +int wrmsr(int addr, msr_t msr) +{ + uint32_t buf[2]; + buf[0] = msr.lo; + buf[1] = msr.hi; + + if (lseek(fd_msr, (off_t) addr, SEEK_SET) == -1) { + msg_perr("Could not lseek() MSR: %s\n", strerror(errno)); + close(fd_msr); + exit(1); + } + + if (write(fd_msr, buf, 8) != 8 && errno != EIO) { + msg_perr("Could not write() MSR: %s\n", strerror(errno)); + close(fd_msr); + exit(1); + } + + /* Some MSRs must not be written. */ + if (errno == EIO) + return -1; + + return 0; +} + +int setup_cpu_msr(int cpu) +{ + char msrfilename[64] = { 0 }; + snprintf(msrfilename, sizeof(msrfilename), "/dev/cpu/%d/msr", cpu); + + if (fd_msr != -1) { + msg_pinfo("MSR was already initialized\n"); + return -1; + } + + fd_msr = open(msrfilename, O_RDWR); + + if (fd_msr < 0) { + msg_perr("Error while opening %s: %s\n", msrfilename, strerror(errno)); + msg_pinfo("Did you run 'modprobe msr'?\n"); + return -1; + } + + return 0; +} + +void cleanup_cpu_msr(void) +{ + if (fd_msr == -1) { + msg_pinfo("No MSR initialized.\n"); + return; + } + + close(fd_msr); + + /* Clear MSR file descriptor. */ + fd_msr = -1; +} +#elif defined(__OpenBSD__) && defined (__i386__) /* This does only work for certain AMD Geode LX systems see amdmsr(4). */ +#include <stdint.h> +#include <stdio.h> +#include <sys/ioctl.h> +#include <machine/amdmsr.h> + +static int fd_msr = -1; + +msr_t rdmsr(int addr) +{ + struct amdmsr_req args; + + msr_t msr = { 0xffffffff, 0xffffffff }; + + args.addr = (uint32_t)addr; + + if (ioctl(fd_msr, RDMSR, &args) < 0) { + msg_perr("Error while executing RDMSR ioctl: %s\n", strerror(errno)); + close(fd_msr); + exit(1); + } + + msr.lo = args.val & 0xffffffff; + msr.hi = args.val >> 32; + + return msr; +} + +int wrmsr(int addr, msr_t msr) +{ + struct amdmsr_req args; + + args.addr = addr; + args.val = (((uint64_t)msr.hi) << 32) | msr.lo; + + if (ioctl(fd_msr, WRMSR, &args) < 0) { + msg_perr("Error while executing WRMSR ioctl: %s\n", strerror(errno)); + close(fd_msr); + exit(1); + } + + return 0; +} + +int setup_cpu_msr(int cpu) +{ + char msrfilename[64] = { 0 }; + snprintf(msrfilename, sizeof(msrfilename), "/dev/amdmsr"); + + if (fd_msr != -1) { + msg_pinfo("MSR was already initialized\n"); + return -1; + } + + fd_msr = open(msrfilename, O_RDWR); + + if (fd_msr < 0) { + msg_perr("Error while opening %s: %s\n", msrfilename, strerror(errno)); + return -1; + } + + return 0; +} + +void cleanup_cpu_msr(void) +{ + if (fd_msr == -1) { + msg_pinfo("No MSR initialized.\n"); + return; + } + + close(fd_msr); + + /* Clear MSR file descriptor. */ + fd_msr = -1; +} + +#elif defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__) +#include <sys/ioctl.h> + +typedef struct { + int msr; + uint64_t data; +} cpu_msr_args_t; +#define CPU_RDMSR _IOWR('c', 1, cpu_msr_args_t) +#define CPU_WRMSR _IOWR('c', 2, cpu_msr_args_t) + +static int fd_msr = -1; + +msr_t rdmsr(int addr) +{ + cpu_msr_args_t args; + + msr_t msr = { 0xffffffff, 0xffffffff }; + + args.msr = addr; + + if (ioctl(fd_msr, CPU_RDMSR, &args) < 0) { + msg_perr("Error while executing CPU_RDMSR ioctl: %s\n", strerror(errno)); + close(fd_msr); + exit(1); + } + + msr.lo = args.data & 0xffffffff; + msr.hi = args.data >> 32; + + return msr; +} + +int wrmsr(int addr, msr_t msr) +{ + cpu_msr_args_t args; + + args.msr = addr; + args.data = (((uint64_t)msr.hi) << 32) | msr.lo; + + if (ioctl(fd_msr, CPU_WRMSR, &args) < 0) { + msg_perr("Error while executing CPU_WRMSR ioctl: %s\n", strerror(errno)); + close(fd_msr); + exit(1); + } + + return 0; +} + +int setup_cpu_msr(int cpu) +{ + char msrfilename[64] = { 0 }; + snprintf(msrfilename, sizeof(msrfilename), "/dev/cpu%d", cpu); + + if (fd_msr != -1) { + msg_pinfo("MSR was already initialized\n"); + return -1; + } + + fd_msr = open(msrfilename, O_RDWR); + + if (fd_msr < 0) { + msg_perr("Error while opening %s: %s\n", msrfilename, strerror(errno)); + msg_pinfo("Did you install ports/sysutils/devcpu?\n"); + return -1; + } + + return 0; +} + +void cleanup_cpu_msr(void) +{ + if (fd_msr == -1) { + msg_pinfo("No MSR initialized.\n"); + return; + } + + close(fd_msr); + + /* Clear MSR file descriptor. */ + fd_msr = -1; +} + +#elif defined(__MACH__) && defined(__APPLE__) +/* rdmsr() and wrmsr() are provided by DirectHW which needs neither setup nor cleanup. */ +int setup_cpu_msr(int cpu) +{ + // Always succeed for now + return 0; +} + +void cleanup_cpu_msr(void) +{ + // Nothing, yet. +} +#elif defined(__LIBPAYLOAD__) +msr_t libpayload_rdmsr(int addr) +{ + msr_t msr; + unsigned long long val = _rdmsr(addr); + msr.lo = val & 0xffffffff; + msr.hi = val >> 32; + return msr; +} + +int libpayload_wrmsr(int addr, msr_t msr) +{ + _wrmsr(addr, msr.lo | ((unsigned long long)msr.hi << 32)); + return 0; +} + +int setup_cpu_msr(int cpu) +{ + return 0; +} + +void cleanup_cpu_msr(void) +{ +} +#else +/* default MSR implementation */ +msr_t rdmsr(int addr) +{ + msr_t ret = { 0xffffffff, 0xffffffff }; + + return ret; +} + +int wrmsr(int addr, msr_t msr) +{ + return -1; +} + +int setup_cpu_msr(int cpu) +{ + msg_pinfo("No MSR support for your OS yet.\n"); + return -1; +} + +void cleanup_cpu_msr(void) +{ + // Nothing, yet. +} +#endif // OS switches for MSR code diff --git a/hwaccess_x86_msr.h b/hwaccess_x86_msr.h new file mode 100644 index 0000000..4229b3b --- /dev/null +++ b/hwaccess_x86_msr.h @@ -0,0 +1,52 @@ +/* + * This file is part of the flashrom project. + * + * Copyright (C) 2009 Carl-Daniel Hailfinger + * + * This program 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; version 2 of the License. + * + * This program 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. + */ + +#ifndef __HWACCESS_X86_MSR_H__ +#define __HWACCESS_X86_MSR_H__ 1 + +#include <stdint.h> + +#if !(defined(__MACH__) && defined(__APPLE__)) && !defined(__FreeBSD__) && !defined(__FreeBSD_kernel__) && !defined(__DragonFly__) && !defined(__LIBPAYLOAD__) +typedef struct { uint32_t hi, lo; } msr_t; +msr_t rdmsr(int addr); +int wrmsr(int addr, msr_t msr); +#endif + +#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__) +/* FreeBSD already has conflicting definitions for wrmsr/rdmsr. */ +#undef rdmsr +#undef wrmsr +#define rdmsr freebsd_rdmsr +#define wrmsr freebsd_wrmsr +typedef struct { uint32_t hi, lo; } msr_t; +msr_t freebsd_rdmsr(int addr); +int freebsd_wrmsr(int addr, msr_t msr); +#endif + +#if defined(__LIBPAYLOAD__) +#include <arch/io.h> +#include <arch/msr.h> +typedef struct { uint32_t hi, lo; } msr_t; +msr_t libpayload_rdmsr(int addr); +int libpayload_wrmsr(int addr, msr_t msr); +#undef rdmsr +#define rdmsr libpayload_rdmsr +#define wrmsr libpayload_wrmsr +#endif + +int setup_cpu_msr(int cpu); +void cleanup_cpu_msr(void); + +#endif /* __HWACCESS_X86_MSR_H__ */ \ No newline at end of file diff --git a/meson.build b/meson.build index 5cbcac2..2e7296b 100644 --- a/meson.build +++ b/meson.build @@ -348,6 +348,7 @@ if need_raw_access srcs += 'hwaccess.c' srcs += 'hwaccess_x86_io.c' + srcs += 'hwaccess_x86_msr.c' srcs += 'physmap.c' cargs += '-DNEED_RAW_ACCESS=1' cargs += '-D__FLASHROM_HAVE_OUTB__=1' diff --git a/physmap.c b/physmap.c index 796860c..6f2896f 100644 --- a/physmap.c +++ b/physmap.c @@ -362,327 +362,3 @@ { return physmap_common(descr, phys_addr, len, PHYSM_RO, PHYSM_NOCLEANUP, PHYSM_EXACT); } - -#if CONFIG_INTERNAL == 1 -/* MSR abstraction implementations for Linux, OpenBSD, FreeBSD/Dragonfly, OSX, libpayload - * and a non-working default implementation on the bottom. See also hwaccess.h for some (re)declarations. */ -#if defined(__i386__) || defined(__x86_64__) - -#ifdef __linux__ -/* - * Reading and writing to MSRs, however requires instructions rdmsr/wrmsr, - * which are ring0 privileged instructions so only the kernel can do the - * read/write. This function, therefore, requires that the msr kernel module - * be loaded to access these instructions from user space using device - * /dev/cpu/0/msr. - */ - -static int fd_msr = -1; - -msr_t rdmsr(int addr) -{ - uint32_t buf[2]; - msr_t msr = { 0xffffffff, 0xffffffff }; - - if (lseek(fd_msr, (off_t) addr, SEEK_SET) == -1) { - msg_perr("Could not lseek() MSR: %s\n", strerror(errno)); - close(fd_msr); - exit(1); - } - - if (read(fd_msr, buf, 8) == 8) { - msr.lo = buf[0]; - msr.hi = buf[1]; - return msr; - } - - if (errno != EIO) { - // A severe error. - msg_perr("Could not read() MSR: %s\n", strerror(errno)); - close(fd_msr); - exit(1); - } - - return msr; -} - -int wrmsr(int addr, msr_t msr) -{ - uint32_t buf[2]; - buf[0] = msr.lo; - buf[1] = msr.hi; - - if (lseek(fd_msr, (off_t) addr, SEEK_SET) == -1) { - msg_perr("Could not lseek() MSR: %s\n", strerror(errno)); - close(fd_msr); - exit(1); - } - - if (write(fd_msr, buf, 8) != 8 && errno != EIO) { - msg_perr("Could not write() MSR: %s\n", strerror(errno)); - close(fd_msr); - exit(1); - } - - /* Some MSRs must not be written. */ - if (errno == EIO) - return -1; - - return 0; -} - -int setup_cpu_msr(int cpu) -{ - char msrfilename[64] = { 0 }; - snprintf(msrfilename, sizeof(msrfilename), "/dev/cpu/%d/msr", cpu); - - if (fd_msr != -1) { - msg_pinfo("MSR was already initialized\n"); - return -1; - } - - fd_msr = open(msrfilename, O_RDWR); - - if (fd_msr < 0) { - msg_perr("Error while opening %s: %s\n", msrfilename, strerror(errno)); - msg_pinfo("Did you run 'modprobe msr'?\n"); - return -1; - } - - return 0; -} - -void cleanup_cpu_msr(void) -{ - if (fd_msr == -1) { - msg_pinfo("No MSR initialized.\n"); - return; - } - - close(fd_msr); - - /* Clear MSR file descriptor. */ - fd_msr = -1; -} -#elif defined(__OpenBSD__) && defined (__i386__) /* This does only work for certain AMD Geode LX systems see amdmsr(4). */ -#include <sys/ioctl.h> -#include <machine/amdmsr.h> - -static int fd_msr = -1; - -msr_t rdmsr(int addr) -{ - struct amdmsr_req args; - - msr_t msr = { 0xffffffff, 0xffffffff }; - - args.addr = (uint32_t)addr; - - if (ioctl(fd_msr, RDMSR, &args) < 0) { - msg_perr("Error while executing RDMSR ioctl: %s\n", strerror(errno)); - close(fd_msr); - exit(1); - } - - msr.lo = args.val & 0xffffffff; - msr.hi = args.val >> 32; - - return msr; -} - -int wrmsr(int addr, msr_t msr) -{ - struct amdmsr_req args; - - args.addr = addr; - args.val = (((uint64_t)msr.hi) << 32) | msr.lo; - - if (ioctl(fd_msr, WRMSR, &args) < 0) { - msg_perr("Error while executing WRMSR ioctl: %s\n", strerror(errno)); - close(fd_msr); - exit(1); - } - - return 0; -} - -int setup_cpu_msr(int cpu) -{ - char msrfilename[64] = { 0 }; - snprintf(msrfilename, sizeof(msrfilename), "/dev/amdmsr"); - - if (fd_msr != -1) { - msg_pinfo("MSR was already initialized\n"); - return -1; - } - - fd_msr = open(msrfilename, O_RDWR); - - if (fd_msr < 0) { - msg_perr("Error while opening %s: %s\n", msrfilename, strerror(errno)); - return -1; - } - - return 0; -} - -void cleanup_cpu_msr(void) -{ - if (fd_msr == -1) { - msg_pinfo("No MSR initialized.\n"); - return; - } - - close(fd_msr); - - /* Clear MSR file descriptor. */ - fd_msr = -1; -} - -#elif defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__) -#include <sys/ioctl.h> - -typedef struct { - int msr; - uint64_t data; -} cpu_msr_args_t; -#define CPU_RDMSR _IOWR('c', 1, cpu_msr_args_t) -#define CPU_WRMSR _IOWR('c', 2, cpu_msr_args_t) - -static int fd_msr = -1; - -msr_t rdmsr(int addr) -{ - cpu_msr_args_t args; - - msr_t msr = { 0xffffffff, 0xffffffff }; - - args.msr = addr; - - if (ioctl(fd_msr, CPU_RDMSR, &args) < 0) { - msg_perr("Error while executing CPU_RDMSR ioctl: %s\n", strerror(errno)); - close(fd_msr); - exit(1); - } - - msr.lo = args.data & 0xffffffff; - msr.hi = args.data >> 32; - - return msr; -} - -int wrmsr(int addr, msr_t msr) -{ - cpu_msr_args_t args; - - args.msr = addr; - args.data = (((uint64_t)msr.hi) << 32) | msr.lo; - - if (ioctl(fd_msr, CPU_WRMSR, &args) < 0) { - msg_perr("Error while executing CPU_WRMSR ioctl: %s\n", strerror(errno)); - close(fd_msr); - exit(1); - } - - return 0; -} - -int setup_cpu_msr(int cpu) -{ - char msrfilename[64] = { 0 }; - snprintf(msrfilename, sizeof(msrfilename), "/dev/cpu%d", cpu); - - if (fd_msr != -1) { - msg_pinfo("MSR was already initialized\n"); - return -1; - } - - fd_msr = open(msrfilename, O_RDWR); - - if (fd_msr < 0) { - msg_perr("Error while opening %s: %s\n", msrfilename, strerror(errno)); - msg_pinfo("Did you install ports/sysutils/devcpu?\n"); - return -1; - } - - return 0; -} - -void cleanup_cpu_msr(void) -{ - if (fd_msr == -1) { - msg_pinfo("No MSR initialized.\n"); - return; - } - - close(fd_msr); - - /* Clear MSR file descriptor. */ - fd_msr = -1; -} - -#elif defined(__MACH__) && defined(__APPLE__) -/* rdmsr() and wrmsr() are provided by DirectHW which needs neither setup nor cleanup. */ -int setup_cpu_msr(int cpu) -{ - // Always succeed for now - return 0; -} - -void cleanup_cpu_msr(void) -{ - // Nothing, yet. -} -#elif defined(__LIBPAYLOAD__) -msr_t libpayload_rdmsr(int addr) -{ - msr_t msr; - unsigned long long val = _rdmsr(addr); - msr.lo = val & 0xffffffff; - msr.hi = val >> 32; - return msr; -} - -int libpayload_wrmsr(int addr, msr_t msr) -{ - _wrmsr(addr, msr.lo | ((unsigned long long)msr.hi << 32)); - return 0; -} - -int setup_cpu_msr(int cpu) -{ - return 0; -} - -void cleanup_cpu_msr(void) -{ -} -#else -/* default MSR implementation */ -msr_t rdmsr(int addr) -{ - msr_t ret = { 0xffffffff, 0xffffffff }; - - return ret; -} - -int wrmsr(int addr, msr_t msr) -{ - return -1; -} - -int setup_cpu_msr(int cpu) -{ - msg_pinfo("No MSR support for your OS yet.\n"); - return -1; -} - -void cleanup_cpu_msr(void) -{ - // Nothing, yet. -} -#endif // OS switches for MSR code -#else // x86 -/* Does MSR exist on non-x86 architectures? */ -#endif // arch switches for MSR code -#endif // CONFIG_INTERNAL == 1 diff --git a/programmer.h b/programmer.h index b8b5bbc..c4af35a 100644 --- a/programmer.h +++ b/programmer.h @@ -238,10 +238,8 @@ void *physmap_ro_unaligned(const char *descr, uintptr_t phys_addr, size_t len); void physunmap(void *virt_addr, size_t len); void physunmap_unaligned(void *virt_addr, size_t len); -#if CONFIG_INTERNAL == 1 -int setup_cpu_msr(int cpu); -void cleanup_cpu_msr(void);
+#if CONFIG_INTERNAL == 1 /* cbtable.c */ int cb_parse_table(const char **vendor, const char **model); int cb_check_image(const uint8_t *bios, unsigned int size);