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SUSE:SLE-12-SP2:GA
grub2.3179
0004-tsc-Use-alternative-delay-sources-whenever...
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File 0004-tsc-Use-alternative-delay-sources-whenever-appropria.patch of Package grub2.3179
From d43a5ee65143f384357fbfdcace4258e3537c214 Mon Sep 17 00:00:00 2001 From: Vladimir Serbinenko <phcoder@gmail.com> Date: Fri, 13 Nov 2015 16:14:53 +0100 Subject: [PATCH] tsc: Use alternative delay sources whenever appropriate. PIT isn't available on some of new hardware including Hyper-V. So use pmtimer for calibration. Moreover pmtimer calibration is faster, so use it on coreboor where booting time is important. Based on patch by Michael Chang. --- grub-core/Makefile.am | 7 ++ grub-core/Makefile.core.def | 19 ++++- grub-core/commands/acpi.c | 12 --- grub-core/commands/efi/acpi.c | 59 -------------- grub-core/commands/i386/pc/acpi.c | 83 -------------------- grub-core/kern/acpi.c | 34 ++++++++ grub-core/kern/efi/acpi.c | 59 ++++++++++++++ grub-core/kern/i386/efi/tsc.c | 40 ++++++++++ grub-core/kern/i386/pc/acpi.c | 83 ++++++++++++++++++++ grub-core/kern/i386/tsc.c | 123 +++++++---------------------- grub-core/kern/i386/tsc_pit.c | 84 ++++++++++++++++++++ grub-core/kern/i386/tsc_pmtimer.c | 160 ++++++++++++++++++++++++++++++++++++++ grub-core/kern/i386/xen/tsc.c | 40 ++++++++++ include/grub/acpi.h | 17 ++-- include/grub/i386/tsc.h | 26 +++++++ 15 files changed, 588 insertions(+), 258 deletions(-) delete mode 100644 grub-core/commands/efi/acpi.c delete mode 100644 grub-core/commands/i386/pc/acpi.c create mode 100644 grub-core/kern/acpi.c create mode 100644 grub-core/kern/efi/acpi.c create mode 100644 grub-core/kern/i386/efi/tsc.c create mode 100644 grub-core/kern/i386/pc/acpi.c create mode 100644 grub-core/kern/i386/tsc_pit.c create mode 100644 grub-core/kern/i386/tsc_pmtimer.c create mode 100644 grub-core/kern/i386/xen/tsc.c Index: grub-2.02~beta2/grub-core/Makefile.am =================================================================== --- grub-2.02~beta2.orig/grub-core/Makefile.am +++ grub-2.02~beta2/grub-core/Makefile.am @@ -97,6 +97,7 @@ if COND_i386_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/i386/tsc.h +KERNEL_HEADER_FILES += $(top_srcdir)/include/grub/acpi.h KERNEL_HEADER_FILES += $(top_srcdir)/include/grub/pci.h endif @@ -108,10 +109,12 @@ KERNEL_HEADER_FILES += $(top_srcdir)/inc KERNEL_HEADER_FILES += $(top_srcdir)/include/grub/gfxterm.h KERNEL_HEADER_FILES += $(top_srcdir)/include/grub/font.h KERNEL_HEADER_FILES += $(top_srcdir)/include/grub/bufio.h +KERNEL_HEADER_FILES += $(top_srcdir)/include/grub/acpi.h endif if COND_i386_multiboot KERNEL_HEADER_FILES += $(top_srcdir)/include/grub/i386/tsc.h +KERNEL_HEADER_FILES += $(top_srcdir)/include/grub/acpi.h endif if COND_i386_qemu @@ -150,11 +153,13 @@ KERNEL_HEADER_FILES += $(top_srcdir)/inc KERNEL_HEADER_FILES += $(top_srcdir)/include/grub/efi/disk.h KERNEL_HEADER_FILES += $(top_srcdir)/include/grub/i386/tsc.h KERNEL_HEADER_FILES += $(top_srcdir)/include/grub/pci.h +KERNEL_HEADER_FILES += $(top_srcdir)/include/grub/acpi.h endif if COND_ia64_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 endif if COND_mips @@ -229,11 +234,13 @@ KERNEL_HEADER_FILES += $(top_srcdir)/inc 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/arm/system.h +KERNEL_HEADER_FILES += $(top_srcdir)/include/grub/acpi.h endif if COND_arm64_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 endif if COND_emu Index: grub-2.02~beta2/grub-core/Makefile.core.def =================================================================== --- grub-2.02~beta2.orig/grub-core/Makefile.core.def +++ grub-2.02~beta2/grub-core/Makefile.core.def @@ -173,8 +173,20 @@ kernel = { efi = kern/efi/init.c; efi = kern/efi/mm.c; efi = term/efi/console.c; + efi = kern/acpi.c; + efi = kern/efi/acpi.c; + i386_coreboot = kern/i386/pc/acpi.c; + i386_multiboot = kern/i386/pc/acpi.c; + i386_coreboot = kern/acpi.c; + i386_multiboot = kern/acpi.c; x86 = kern/i386/tsc.c; + x86 = kern/i386/tsc_pit.c; + i386_efi = kern/i386/efi/tsc.c; + x86_64_efi = kern/i386/efi/tsc.c; + i386_efi = kern/i386/tsc_pmtimer.c; + i386_coreboot = kern/i386/tsc_pmtimer.c; + x86_64_efi = kern/i386/tsc_pmtimer.c; i386_efi = kern/i386/efi/init.c; i386_efi = bus/pci.c; @@ -186,6 +198,7 @@ kernel = { x86_64_efi = bus/pci.c; xen = kern/i386/tsc.c; + xen = kern/i386/xen/tsc.c; x86_64_xen = kern/x86_64/xen/hypercall.S; i386_xen = kern/i386/xen/hypercall.S; xen = kern/xen/init.c; @@ -684,10 +697,8 @@ module = { name = acpi; common = commands/acpi.c; - efi = commands/efi/acpi.c; - i386_pc = commands/i386/pc/acpi.c; - i386_coreboot = commands/i386/pc/acpi.c; - i386_multiboot = commands/i386/pc/acpi.c; + i386_pc = kern/acpi.c; + i386_pc = kern/i386/pc/acpi.c; enable = efi; enable = i386_pc; Index: grub-2.02~beta2/grub-core/commands/acpi.c =================================================================== --- grub-2.02~beta2.orig/grub-core/commands/acpi.c +++ grub-2.02~beta2/grub-core/commands/acpi.c @@ -61,18 +61,6 @@ static const struct grub_arg_option opti {0, 0, 0, 0, 0, 0} }; -/* Simple checksum by summing all bytes. Used by ACPI and SMBIOS. */ -grub_uint8_t -grub_byte_checksum (void *base, grub_size_t size) -{ - grub_uint8_t *ptr; - grub_uint8_t ret = 0; - for (ptr = (grub_uint8_t *) base; ptr < ((grub_uint8_t *) base) + size; - ptr++) - ret += *ptr; - return ret; -} - /* rev1 is 1 if ACPIv1 is to be generated, 0 otherwise. rev2 contains the revision of ACPIv2+ to generate or 0 if none. */ static int rev1, rev2; Index: grub-2.02~beta2/grub-core/commands/efi/acpi.c =================================================================== --- grub-2.02~beta2.orig/grub-core/commands/efi/acpi.c +++ /dev/null @@ -1,59 +0,0 @@ -/* acpi.c - get acpi tables. */ -/* - * GRUB -- GRand Unified Bootloader - * Copyright (C) 2009 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/acpi.h> -#include <grub/misc.h> -#include <grub/efi/efi.h> -#include <grub/efi/api.h> - -struct grub_acpi_rsdp_v10 * -grub_machine_acpi_get_rsdpv1 (void) -{ - unsigned i; - static grub_efi_packed_guid_t acpi_guid = GRUB_EFI_ACPI_TABLE_GUID; - - for (i = 0; i < grub_efi_system_table->num_table_entries; i++) - { - grub_efi_packed_guid_t *guid = - &grub_efi_system_table->configuration_table[i].vendor_guid; - - if (! grub_memcmp (guid, &acpi_guid, sizeof (grub_efi_packed_guid_t))) - return (struct grub_acpi_rsdp_v10 *) - grub_efi_system_table->configuration_table[i].vendor_table; - } - return 0; -} - -struct grub_acpi_rsdp_v20 * -grub_machine_acpi_get_rsdpv2 (void) -{ - unsigned i; - static grub_efi_packed_guid_t acpi20_guid = GRUB_EFI_ACPI_20_TABLE_GUID; - - for (i = 0; i < grub_efi_system_table->num_table_entries; i++) - { - grub_efi_packed_guid_t *guid = - &grub_efi_system_table->configuration_table[i].vendor_guid; - - if (! grub_memcmp (guid, &acpi20_guid, sizeof (grub_efi_packed_guid_t))) - return (struct grub_acpi_rsdp_v20 *) - grub_efi_system_table->configuration_table[i].vendor_table; - } - return 0; -} Index: grub-2.02~beta2/grub-core/commands/i386/pc/acpi.c =================================================================== --- grub-2.02~beta2.orig/grub-core/commands/i386/pc/acpi.c +++ /dev/null @@ -1,83 +0,0 @@ -/* acpi.c - get acpi tables. */ -/* - * GRUB -- GRand Unified Bootloader - * Copyright (C) 2009 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/acpi.h> -#include <grub/misc.h> - -struct grub_acpi_rsdp_v10 * -grub_machine_acpi_get_rsdpv1 (void) -{ - int ebda_len; - grub_uint8_t *ebda, *ptr; - - grub_dprintf ("acpi", "Looking for RSDP. Scanning EBDA\n"); - ebda = (grub_uint8_t *) ((* ((grub_uint16_t *) 0x40e)) << 4); - ebda_len = * (grub_uint16_t *) ebda; - if (! ebda_len) /* FIXME do we really need this check? */ - goto scan_bios; - for (ptr = ebda; ptr < ebda + 0x400; ptr += 16) - if (grub_memcmp (ptr, GRUB_RSDP_SIGNATURE, GRUB_RSDP_SIGNATURE_SIZE) == 0 - && grub_byte_checksum (ptr, sizeof (struct grub_acpi_rsdp_v10)) == 0 - && ((struct grub_acpi_rsdp_v10 *) ptr)->revision == 0) - return (struct grub_acpi_rsdp_v10 *) ptr; - -scan_bios: - grub_dprintf ("acpi", "Looking for RSDP. Scanning BIOS\n"); - for (ptr = (grub_uint8_t *) 0xe0000; ptr < (grub_uint8_t *) 0x100000; - ptr += 16) - if (grub_memcmp (ptr, GRUB_RSDP_SIGNATURE, GRUB_RSDP_SIGNATURE_SIZE) == 0 - && grub_byte_checksum (ptr, sizeof (struct grub_acpi_rsdp_v10)) == 0 - && ((struct grub_acpi_rsdp_v10 *) ptr)->revision == 0) - return (struct grub_acpi_rsdp_v10 *) ptr; - return 0; -} - -struct grub_acpi_rsdp_v20 * -grub_machine_acpi_get_rsdpv2 (void) -{ - int ebda_len; - grub_uint8_t *ebda, *ptr; - - grub_dprintf ("acpi", "Looking for RSDP. Scanning EBDA\n"); - ebda = (grub_uint8_t *) ((* ((grub_uint16_t *) 0x40e)) << 4); - ebda_len = * (grub_uint16_t *) ebda; - if (! ebda_len) /* FIXME do we really need this check? */ - goto scan_bios; - for (ptr = ebda; ptr < ebda + 0x400; ptr += 16) - if (grub_memcmp (ptr, GRUB_RSDP_SIGNATURE, GRUB_RSDP_SIGNATURE_SIZE) == 0 - && grub_byte_checksum (ptr, sizeof (struct grub_acpi_rsdp_v10)) == 0 - && ((struct grub_acpi_rsdp_v10 *) ptr)->revision != 0 - && ((struct grub_acpi_rsdp_v20 *) ptr)->length < 1024 - && grub_byte_checksum (ptr, ((struct grub_acpi_rsdp_v20 *) ptr)->length) - == 0) - return (struct grub_acpi_rsdp_v20 *) ptr; - -scan_bios: - grub_dprintf ("acpi", "Looking for RSDP. Scanning BIOS\n"); - for (ptr = (grub_uint8_t *) 0xe0000; ptr < (grub_uint8_t *) 0x100000; - ptr += 16) - if (grub_memcmp (ptr, GRUB_RSDP_SIGNATURE, GRUB_RSDP_SIGNATURE_SIZE) == 0 - && grub_byte_checksum (ptr, sizeof (struct grub_acpi_rsdp_v10)) == 0 - && ((struct grub_acpi_rsdp_v10 *) ptr)->revision != 0 - && ((struct grub_acpi_rsdp_v20 *) ptr)->length < 1024 - && grub_byte_checksum (ptr, ((struct grub_acpi_rsdp_v20 *) ptr)->length) - == 0) - return (struct grub_acpi_rsdp_v20 *) ptr; - return 0; -} Index: grub-2.02~beta2/grub-core/kern/acpi.c =================================================================== --- /dev/null +++ grub-2.02~beta2/grub-core/kern/acpi.c @@ -0,0 +1,34 @@ +/* + * GRUB -- GRand Unified Bootloader + * Copyright (C) 2012 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/types.h> +#include <grub/time.h> +#include <grub/misc.h> +#include <grub/acpi.h> + +/* Simple checksum by summing all bytes. Used by ACPI and SMBIOS. */ +grub_uint8_t +grub_byte_checksum (void *base, grub_size_t size) +{ + grub_uint8_t *ptr; + grub_uint8_t ret = 0; + for (ptr = (grub_uint8_t *) base; ptr < ((grub_uint8_t *) base) + size; + ptr++) + ret += *ptr; + return ret; +} Index: grub-2.02~beta2/grub-core/kern/efi/acpi.c =================================================================== --- /dev/null +++ grub-2.02~beta2/grub-core/kern/efi/acpi.c @@ -0,0 +1,59 @@ +/* acpi.c - get acpi tables. */ +/* + * GRUB -- GRand Unified Bootloader + * Copyright (C) 2009 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/acpi.h> +#include <grub/misc.h> +#include <grub/efi/efi.h> +#include <grub/efi/api.h> + +struct grub_acpi_rsdp_v10 * +grub_machine_acpi_get_rsdpv1 (void) +{ + unsigned i; + static grub_efi_packed_guid_t acpi_guid = GRUB_EFI_ACPI_TABLE_GUID; + + for (i = 0; i < grub_efi_system_table->num_table_entries; i++) + { + grub_efi_packed_guid_t *guid = + &grub_efi_system_table->configuration_table[i].vendor_guid; + + if (! grub_memcmp (guid, &acpi_guid, sizeof (grub_efi_packed_guid_t))) + return (struct grub_acpi_rsdp_v10 *) + grub_efi_system_table->configuration_table[i].vendor_table; + } + return 0; +} + +struct grub_acpi_rsdp_v20 * +grub_machine_acpi_get_rsdpv2 (void) +{ + unsigned i; + static grub_efi_packed_guid_t acpi20_guid = GRUB_EFI_ACPI_20_TABLE_GUID; + + for (i = 0; i < grub_efi_system_table->num_table_entries; i++) + { + grub_efi_packed_guid_t *guid = + &grub_efi_system_table->configuration_table[i].vendor_guid; + + if (! grub_memcmp (guid, &acpi20_guid, sizeof (grub_efi_packed_guid_t))) + return (struct grub_acpi_rsdp_v20 *) + grub_efi_system_table->configuration_table[i].vendor_table; + } + return 0; +} Index: grub-2.02~beta2/grub-core/kern/i386/efi/tsc.c =================================================================== --- /dev/null +++ grub-2.02~beta2/grub-core/kern/i386/efi/tsc.c @@ -0,0 +1,40 @@ +/* kern/i386/tsc.c - x86 TSC time source implementation + * Requires Pentium or better x86 CPU that supports the RDTSC instruction. + * This module uses the PIT to calibrate the TSC to + * real time. + * + * GRUB -- GRand Unified Bootloader + * Copyright (C) 2008 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/types.h> +#include <grub/time.h> +#include <grub/misc.h> +#include <grub/i386/tsc.h> +#include <grub/efi/efi.h> +#include <grub/efi/api.h> + +int +grub_tsc_calibrate_from_efi (void) +{ + grub_uint64_t start_tsc, end_tsc; + /* Use EFI Time Service to calibrate TSC */ + start_tsc = grub_get_tsc (); + efi_call_1 (grub_efi_system_table->boot_services->stall, 1000); + end_tsc = grub_get_tsc (); + grub_tsc_rate = grub_divmod64 ((1ULL << 32), end_tsc - start_tsc, 0); + return 1; +} Index: grub-2.02~beta2/grub-core/kern/i386/pc/acpi.c =================================================================== --- /dev/null +++ grub-2.02~beta2/grub-core/kern/i386/pc/acpi.c @@ -0,0 +1,83 @@ +/* acpi.c - get acpi tables. */ +/* + * GRUB -- GRand Unified Bootloader + * Copyright (C) 2009 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/acpi.h> +#include <grub/misc.h> + +struct grub_acpi_rsdp_v10 * +grub_machine_acpi_get_rsdpv1 (void) +{ + int ebda_len; + grub_uint8_t *ebda, *ptr; + + grub_dprintf ("acpi", "Looking for RSDP. Scanning EBDA\n"); + ebda = (grub_uint8_t *) ((* ((grub_uint16_t *) 0x40e)) << 4); + ebda_len = * (grub_uint16_t *) ebda; + if (! ebda_len) /* FIXME do we really need this check? */ + goto scan_bios; + for (ptr = ebda; ptr < ebda + 0x400; ptr += 16) + if (grub_memcmp (ptr, GRUB_RSDP_SIGNATURE, GRUB_RSDP_SIGNATURE_SIZE) == 0 + && grub_byte_checksum (ptr, sizeof (struct grub_acpi_rsdp_v10)) == 0 + && ((struct grub_acpi_rsdp_v10 *) ptr)->revision == 0) + return (struct grub_acpi_rsdp_v10 *) ptr; + +scan_bios: + grub_dprintf ("acpi", "Looking for RSDP. Scanning BIOS\n"); + for (ptr = (grub_uint8_t *) 0xe0000; ptr < (grub_uint8_t *) 0x100000; + ptr += 16) + if (grub_memcmp (ptr, GRUB_RSDP_SIGNATURE, GRUB_RSDP_SIGNATURE_SIZE) == 0 + && grub_byte_checksum (ptr, sizeof (struct grub_acpi_rsdp_v10)) == 0 + && ((struct grub_acpi_rsdp_v10 *) ptr)->revision == 0) + return (struct grub_acpi_rsdp_v10 *) ptr; + return 0; +} + +struct grub_acpi_rsdp_v20 * +grub_machine_acpi_get_rsdpv2 (void) +{ + int ebda_len; + grub_uint8_t *ebda, *ptr; + + grub_dprintf ("acpi", "Looking for RSDP. Scanning EBDA\n"); + ebda = (grub_uint8_t *) ((* ((grub_uint16_t *) 0x40e)) << 4); + ebda_len = * (grub_uint16_t *) ebda; + if (! ebda_len) /* FIXME do we really need this check? */ + goto scan_bios; + for (ptr = ebda; ptr < ebda + 0x400; ptr += 16) + if (grub_memcmp (ptr, GRUB_RSDP_SIGNATURE, GRUB_RSDP_SIGNATURE_SIZE) == 0 + && grub_byte_checksum (ptr, sizeof (struct grub_acpi_rsdp_v10)) == 0 + && ((struct grub_acpi_rsdp_v10 *) ptr)->revision != 0 + && ((struct grub_acpi_rsdp_v20 *) ptr)->length < 1024 + && grub_byte_checksum (ptr, ((struct grub_acpi_rsdp_v20 *) ptr)->length) + == 0) + return (struct grub_acpi_rsdp_v20 *) ptr; + +scan_bios: + grub_dprintf ("acpi", "Looking for RSDP. Scanning BIOS\n"); + for (ptr = (grub_uint8_t *) 0xe0000; ptr < (grub_uint8_t *) 0x100000; + ptr += 16) + if (grub_memcmp (ptr, GRUB_RSDP_SIGNATURE, GRUB_RSDP_SIGNATURE_SIZE) == 0 + && grub_byte_checksum (ptr, sizeof (struct grub_acpi_rsdp_v10)) == 0 + && ((struct grub_acpi_rsdp_v10 *) ptr)->revision != 0 + && ((struct grub_acpi_rsdp_v20 *) ptr)->length < 1024 + && grub_byte_checksum (ptr, ((struct grub_acpi_rsdp_v20 *) ptr)->length) + == 0) + return (struct grub_acpi_rsdp_v20 *) ptr; + return 0; +} Index: grub-2.02~beta2/grub-core/kern/i386/tsc.c =================================================================== --- grub-2.02~beta2.orig/grub-core/kern/i386/tsc.c +++ grub-2.02~beta2/grub-core/kern/i386/tsc.c @@ -1,7 +1,6 @@ /* kern/i386/tsc.c - x86 TSC time source implementation * Requires Pentium or better x86 CPU that supports the RDTSC instruction. - * This module uses the RTC (via grub_get_rtc()) to calibrate the TSC to - * real time. + * This module calibrates the TSC to real time. * * GRUB -- GRand Unified Bootloader * Copyright (C) 2008 Free Software Foundation, Inc. @@ -25,12 +24,6 @@ #include <grub/misc.h> #include <grub/i386/tsc.h> #include <grub/i386/cpuid.h> -#ifdef GRUB_MACHINE_XEN -#include <grub/xen.h> -#else -#include <grub/i386/pit.h> -#endif -#include <grub/cpu/io.h> /* This defines the value TSC had at the epoch (that is, when we calibrated it). */ static grub_uint64_t tsc_boot_time; @@ -40,28 +33,20 @@ static grub_uint64_t tsc_boot_time; in 32-bit. */ grub_uint32_t grub_tsc_rate; -/* Read the TSC value, which increments with each CPU clock cycle. */ -static __inline grub_uint64_t -grub_get_tsc (void) +static grub_uint64_t +grub_tsc_get_time_ms (void) { - grub_uint32_t lo, hi; - grub_uint32_t a,b,c,d; - - /* The CPUID instruction is a 'serializing' instruction, and - avoids out-of-order execution of the RDTSC instruction. */ - grub_cpuid (0,a,b,c,d); - /* Read TSC value. We cannot use "=A", since this would use - %rax on x86_64. */ - __asm__ __volatile__ ("rdtsc":"=a" (lo), "=d" (hi)); + grub_uint64_t a = grub_get_tsc () - tsc_boot_time; + grub_uint64_t ah = a >> 32; + grub_uint64_t al = a & 0xffffffff; - return (((grub_uint64_t) hi) << 32) | lo; + return ((al * grub_tsc_rate) >> 32) + ah * grub_tsc_rate; } -#ifndef GRUB_MACHINE_XEN - static __inline int grub_cpu_is_tsc_supported (void) { +#ifndef GRUB_MACHINE_XEN grub_uint32_t a,b,c,d; if (! grub_cpu_is_cpuid_supported ()) return 0; @@ -69,93 +54,41 @@ grub_cpu_is_tsc_supported (void) grub_cpuid(1,a,b,c,d); return (d & (1 << 4)) != 0; -} - -static void -grub_pit_wait (grub_uint16_t tics) -{ - /* Disable timer2 gate and speaker. */ - grub_outb (grub_inb (GRUB_PIT_SPEAKER_PORT) - & ~ (GRUB_PIT_SPK_DATA | GRUB_PIT_SPK_TMR2), - GRUB_PIT_SPEAKER_PORT); - - /* Set tics. */ - grub_outb (GRUB_PIT_CTRL_SELECT_2 | GRUB_PIT_CTRL_READLOAD_WORD, - GRUB_PIT_CTRL); - grub_outb (tics & 0xff, GRUB_PIT_COUNTER_2); - grub_outb (tics >> 8, GRUB_PIT_COUNTER_2); - - /* Enable timer2 gate, keep speaker disabled. */ - grub_outb ((grub_inb (GRUB_PIT_SPEAKER_PORT) & ~ GRUB_PIT_SPK_DATA) - | GRUB_PIT_SPK_TMR2, - GRUB_PIT_SPEAKER_PORT); - - /* Wait. */ - while ((grub_inb (GRUB_PIT_SPEAKER_PORT) & GRUB_PIT_SPK_TMR2_LATCH) == 0x00); - - /* Disable timer2 gate and speaker. */ - grub_outb (grub_inb (GRUB_PIT_SPEAKER_PORT) - & ~ (GRUB_PIT_SPK_DATA | GRUB_PIT_SPK_TMR2), - GRUB_PIT_SPEAKER_PORT); -} +#else + return 1; #endif - -static grub_uint64_t -grub_tsc_get_time_ms (void) -{ - grub_uint64_t a = grub_get_tsc () - tsc_boot_time; - grub_uint64_t ah = a >> 32; - grub_uint64_t al = a & 0xffffffff; - - return ((al * grub_tsc_rate) >> 32) + ah * grub_tsc_rate; } -#ifndef GRUB_MACHINE_XEN -/* Calibrate the TSC based on the RTC. */ -static void -calibrate_tsc (void) +static int +calibrate_tsc_hardcode (void) { - /* First calibrate the TSC rate (relative, not absolute time). */ - grub_uint64_t end_tsc; - - tsc_boot_time = grub_get_tsc (); - grub_pit_wait (0xffff); - end_tsc = grub_get_tsc (); - - grub_tsc_rate = 0; - if (end_tsc > tsc_boot_time) - grub_tsc_rate = grub_divmod64 ((55ULL << 32), end_tsc - tsc_boot_time, 0); - if (grub_tsc_rate == 0) - grub_tsc_rate = 5368;/* 800 MHz */ + grub_tsc_rate = 5368;/* 800 MHz */ + return 1; } -#endif void grub_tsc_init (void) { -#ifdef GRUB_MACHINE_XEN - grub_uint64_t t; - tsc_boot_time = grub_get_tsc (); - t = grub_xen_shared_info->vcpu_info[0].time.tsc_to_system_mul; - if (grub_xen_shared_info->vcpu_info[0].time.tsc_shift > 0) - t <<= grub_xen_shared_info->vcpu_info[0].time.tsc_shift; - else - t >>= -grub_xen_shared_info->vcpu_info[0].time.tsc_shift; - grub_tsc_rate = grub_divmod64 (t, 1000000, 0); - grub_install_get_time_ms (grub_tsc_get_time_ms); -#else - if (grub_cpu_is_tsc_supported ()) - { - calibrate_tsc (); - grub_install_get_time_ms (grub_tsc_get_time_ms); - } - else + if (!grub_cpu_is_tsc_supported ()) { #if defined (GRUB_MACHINE_PCBIOS) || defined (GRUB_MACHINE_IEEE1275) grub_install_get_time_ms (grub_rtc_get_time_ms); #else grub_fatal ("no TSC found"); #endif + return; } + + tsc_boot_time = grub_get_tsc (); + +#ifdef GRUB_MACHINE_XEN + (void) (grub_tsc_calibrate_from_xen () || calibrate_tsc_hardcode()); +#elif defined (GRUB_MACHINE_EFI) + (void) (grub_tsc_calibrate_from_pit () || grub_tsc_calibrate_from_pmtimer () || grub_tsc_calibrate_from_efi() || calibrate_tsc_hardcode()); +#elif defined (GRUB_MACHINE_COREBOOT) + (void) (grub_tsc_calibrate_from_pmtimer () || grub_tsc_calibrate_from_pit () || calibrate_tsc_hardcode()); +#else + (void) (grub_tsc_calibrate_from_pit () || calibrate_tsc_hardcode()); #endif + grub_install_get_time_ms (grub_tsc_get_time_ms); } Index: grub-2.02~beta2/grub-core/kern/i386/tsc_pit.c =================================================================== --- /dev/null +++ grub-2.02~beta2/grub-core/kern/i386/tsc_pit.c @@ -0,0 +1,84 @@ +/* kern/i386/tsc.c - x86 TSC time source implementation + * Requires Pentium or better x86 CPU that supports the RDTSC instruction. + * This module uses the PIT to calibrate the TSC to + * real time. + * + * GRUB -- GRand Unified Bootloader + * Copyright (C) 2008 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/types.h> +#include <grub/time.h> +#include <grub/misc.h> +#include <grub/i386/tsc.h> +#include <grub/i386/pit.h> +#include <grub/cpu/io.h> + +static int +grub_pit_wait (void) +{ + int ret = 0; + + /* Disable timer2 gate and speaker. */ + grub_outb (grub_inb (GRUB_PIT_SPEAKER_PORT) + & ~ (GRUB_PIT_SPK_DATA | GRUB_PIT_SPK_TMR2), + GRUB_PIT_SPEAKER_PORT); + + /* Set tics. */ + grub_outb (GRUB_PIT_CTRL_SELECT_2 | GRUB_PIT_CTRL_READLOAD_WORD, + GRUB_PIT_CTRL); + /* 0xffff ticks: 55ms. */ + grub_outb (0xff, GRUB_PIT_COUNTER_2); + grub_outb (0xff, GRUB_PIT_COUNTER_2); + + /* Enable timer2 gate, keep speaker disabled. */ + grub_outb ((grub_inb (GRUB_PIT_SPEAKER_PORT) & ~ GRUB_PIT_SPK_DATA) + | GRUB_PIT_SPK_TMR2, + GRUB_PIT_SPEAKER_PORT); + + if ((grub_inb (GRUB_PIT_SPEAKER_PORT) & GRUB_PIT_SPK_TMR2_LATCH)) { + ret = 1; + /* Wait. */ + while ((grub_inb (GRUB_PIT_SPEAKER_PORT) & GRUB_PIT_SPK_TMR2_LATCH) == 0x00); + } + + /* Disable timer2 gate and speaker. */ + grub_outb (grub_inb (GRUB_PIT_SPEAKER_PORT) + & ~ (GRUB_PIT_SPK_DATA | GRUB_PIT_SPK_TMR2), + GRUB_PIT_SPEAKER_PORT); + + return ret; +} + +/* Calibrate the TSC based on the RTC. */ +int +grub_tsc_calibrate_from_pit (void) +{ + /* First calibrate the TSC rate (relative, not absolute time). */ + grub_uint64_t start_tsc, end_tsc; + + start_tsc = grub_get_tsc (); + if (!grub_pit_wait ()) + return 0; + end_tsc = grub_get_tsc (); + + grub_tsc_rate = 0; + if (end_tsc > start_tsc) + grub_tsc_rate = grub_divmod64 ((55ULL << 32), end_tsc - start_tsc, 0); + if (grub_tsc_rate == 0) + return 0; + return 1; +} Index: grub-2.02~beta2/grub-core/kern/i386/tsc_pmtimer.c =================================================================== --- /dev/null +++ grub-2.02~beta2/grub-core/kern/i386/tsc_pmtimer.c @@ -0,0 +1,160 @@ +/* kern/i386/tsc.c - x86 TSC time source implementation + * Requires Pentium or better x86 CPU that supports the RDTSC instruction. + * This module uses the PIT to calibrate the TSC to + * real time. + * + * GRUB -- GRand Unified Bootloader + * Copyright (C) 2008 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/types.h> +#include <grub/time.h> +#include <grub/misc.h> +#include <grub/i386/tsc.h> +#include <grub/acpi.h> +#include <grub/cpu/io.h> + +static void * +grub_acpi_rsdt_find_table (struct grub_acpi_table_header *rsdt, const char *sig) +{ + grub_size_t s; + grub_uint32_t *ptr; + + if (!rsdt) + return 0; + + if (grub_memcmp (rsdt->signature, "RSDT", 4) != 0) + return 0; + + ptr = (grub_uint32_t *) (rsdt + 1); + s = (rsdt->length - sizeof (*rsdt)) / sizeof (grub_uint32_t); + for (; s; s--, ptr++) + { + struct grub_acpi_table_header *tbl; + tbl = (struct grub_acpi_table_header *) (grub_addr_t) *ptr; + if (grub_memcmp (tbl->signature, sig, 4) == 0) + return tbl; + } + return 0; +} + +static void * +grub_acpi_xsdt_find_table (struct grub_acpi_table_header *xsdt, const char *sig) +{ + grub_size_t s; + grub_uint64_t *ptr; + + if (!xsdt) + return 0; + + if (grub_memcmp (xsdt->signature, "XSDT", 4) != 0) + return 0; + + ptr = (grub_uint64_t *) (xsdt + 1); + s = (xsdt->length - sizeof (*xsdt)) / sizeof (grub_uint32_t); + for (; s; s--, ptr++) + { + struct grub_acpi_table_header *tbl; +#if GRUB_CPU_SIZEOF_VOID_P != 8 + if (*ptr >> 32) + continue; +#endif + tbl = (struct grub_acpi_table_header *) (grub_addr_t) *ptr; + if (grub_memcmp (tbl->signature, sig, 4) == 0) + return tbl; + } + return 0; +} + +struct grub_acpi_fadt * +grub_acpi_find_fadt (void) +{ + struct grub_acpi_fadt *fadt = 0; + struct grub_acpi_rsdp_v10 *rsdpv1; + struct grub_acpi_rsdp_v20 *rsdpv2; + rsdpv1 = grub_machine_acpi_get_rsdpv1 (); + if (rsdpv1) + fadt = grub_acpi_rsdt_find_table ((struct grub_acpi_table_header *) + (grub_addr_t) rsdpv1->rsdt_addr, + GRUB_ACPI_FADT_SIGNATURE); + if (fadt) + return fadt; + rsdpv2 = grub_machine_acpi_get_rsdpv2 (); + if (rsdpv2) + fadt = grub_acpi_rsdt_find_table ((struct grub_acpi_table_header *) + (grub_addr_t) rsdpv2->rsdpv1.rsdt_addr, + GRUB_ACPI_FADT_SIGNATURE); + if (fadt) + return fadt; + if (rsdpv2 +#if GRUB_CPU_SIZEOF_VOID_P != 8 + && !(rsdpv2->xsdt_addr >> 32) +#endif + ) + fadt = grub_acpi_xsdt_find_table ((struct grub_acpi_table_header *) + (grub_addr_t) rsdpv2->xsdt_addr, + GRUB_ACPI_FADT_SIGNATURE); + if (fadt) + return fadt; + return 0; +} + +int +grub_tsc_calibrate_from_pmtimer (void) +{ + grub_uint32_t start; + grub_uint32_t last; + grub_uint32_t cur, end; + struct grub_acpi_fadt *fadt; + grub_port_t p; + grub_uint64_t start_tsc; + grub_uint64_t end_tsc; + int num_iter = 0; + + fadt = grub_acpi_find_fadt (); + if (!fadt) + return 0; + p = fadt->pmtimer; + if (!p) + return 0; + + start = grub_inl (p) & 0xffffff; + last = start; + /* It's 3.579545 MHz clock. Wait 1 ms. */ + end = start + 3580; + start_tsc = grub_get_tsc (); + while (1) + { + cur = grub_inl (p) & 0xffffff; + if (cur < last) + cur |= 0x1000000; + num_iter++; + if (cur >= end) + { + end_tsc = grub_get_tsc (); + grub_tsc_rate = grub_divmod64 ((1ULL << 32), end_tsc - start_tsc, 0); + return 1; + } + /* Check for broken PM timer. + 50000000 TSCs is between 5 ms (10GHz) and 200 ms (250 MHz) + if after this time we still don't have 1 ms on pmtimer, then + pmtimer is broken. + */ + if ((num_iter & 0xffffff) == 0 && grub_get_tsc () - start_tsc > 5000000) { + return 0; + } + } +} Index: grub-2.02~beta2/grub-core/kern/i386/xen/tsc.c =================================================================== --- /dev/null +++ grub-2.02~beta2/grub-core/kern/i386/xen/tsc.c @@ -0,0 +1,40 @@ +/* kern/i386/tsc.c - x86 TSC time source implementation + * Requires Pentium or better x86 CPU that supports the RDTSC instruction. + * This module uses the PIT to calibrate the TSC to + * real time. + * + * GRUB -- GRand Unified Bootloader + * Copyright (C) 2008 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/types.h> +#include <grub/time.h> +#include <grub/misc.h> +#include <grub/i386/tsc.h> +#include <grub/xen.h> + +int +grub_tsc_calibrate_from_xen (void) +{ + grub_uint64_t t; + t = grub_xen_shared_info->vcpu_info[0].time.tsc_to_system_mul; + if (grub_xen_shared_info->vcpu_info[0].time.tsc_shift > 0) + t <<= grub_xen_shared_info->vcpu_info[0].time.tsc_shift; + else + t >>= -grub_xen_shared_info->vcpu_info[0].time.tsc_shift; + grub_tsc_rate = grub_divmod64 (t, 1000000, 0); + return 1; +} Index: grub-2.02~beta2/include/grub/acpi.h =================================================================== --- grub-2.02~beta2.orig/include/grub/acpi.h +++ grub-2.02~beta2/include/grub/acpi.h @@ -67,10 +67,14 @@ struct grub_acpi_fadt grub_uint32_t dsdt_addr; grub_uint8_t somefields1[20]; grub_uint32_t pm1a; - grub_uint8_t somefields2[64]; + grub_uint8_t somefields2[8]; + grub_uint32_t pmtimer; + grub_uint8_t somefields3[32]; + grub_uint32_t flags; + grub_uint8_t somefields4[16]; grub_uint64_t facs_xaddr; grub_uint64_t dsdt_xaddr; - grub_uint8_t somefields3[96]; + grub_uint8_t somefields5[96]; } GRUB_PACKED; #define GRUB_ACPI_MADT_SIGNATURE "APIC" @@ -176,9 +180,9 @@ enum #ifndef GRUB_DSDT_TEST struct grub_acpi_rsdp_v10 *grub_acpi_get_rsdpv1 (void); struct grub_acpi_rsdp_v20 *grub_acpi_get_rsdpv2 (void); -struct grub_acpi_rsdp_v10 *grub_machine_acpi_get_rsdpv1 (void); -struct grub_acpi_rsdp_v20 *grub_machine_acpi_get_rsdpv2 (void); -grub_uint8_t grub_byte_checksum (void *base, grub_size_t size); +struct grub_acpi_rsdp_v10 *EXPORT_FUNC(grub_machine_acpi_get_rsdpv1) (void); +struct grub_acpi_rsdp_v20 *EXPORT_FUNC(grub_machine_acpi_get_rsdpv2) (void); +grub_uint8_t EXPORT_FUNC(grub_byte_checksum) (void *base, grub_size_t size); grub_err_t grub_acpi_create_ebda (void); @@ -217,4 +221,7 @@ enum GRUB_ACPI_EXTOPCODE_BANK_FIELD_OP = 0x87, }; +struct grub_acpi_fadt * +grub_acpi_find_fadt (void); + #endif /* ! GRUB_ACPI_HEADER */ Index: grub-2.02~beta2/include/grub/i386/tsc.h =================================================================== --- grub-2.02~beta2.orig/include/grub/i386/tsc.h +++ grub-2.02~beta2/include/grub/i386/tsc.h @@ -20,9 +20,35 @@ #define KERNEL_CPU_TSC_HEADER 1 #include <grub/types.h> +#include <grub/i386/cpuid.h> void grub_tsc_init (void); /* In ms per 2^32 ticks. */ extern grub_uint32_t EXPORT_VAR(grub_tsc_rate); +int +grub_tsc_calibrate_from_xen (void); +int +grub_tsc_calibrate_from_efi (void); +int +grub_tsc_calibrate_from_pmtimer (void); +int +grub_tsc_calibrate_from_pit (void); + +/* Read the TSC value, which increments with each CPU clock cycle. */ +static __inline grub_uint64_t +grub_get_tsc (void) +{ + grub_uint32_t lo, hi; + grub_uint32_t a,b,c,d; + + /* The CPUID instruction is a 'serializing' instruction, and + avoids out-of-order execution of the RDTSC instruction. */ + grub_cpuid (0,a,b,c,d); + /* Read TSC value. We cannot use "=A", since this would use + %rax on x86_64. */ + __asm__ __volatile__ ("rdtsc":"=a" (lo), "=d" (hi)); + + return (((grub_uint64_t) hi) << 32) | lo; +} #endif /* ! KERNEL_CPU_TSC_HEADER */
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