2008-08-05 Colin D Bennett <colin@gibibit.com>
High resolution timer support. Implemented for x86 CPUs using TSC. Extracted generic grub_millisleep() so it's linked in only as needed. This requires a Pentium compatible CPU; if the RDTSC instruction is not supported, then it falls back on the generic grub_get_time_ms() implementation that uses the machine's RTC. * conf/i386-pc.rmk (kernel_img_SOURCES): Add `kern/time.c', `kern/i386/tsc.c', `kern/generic/rtc_get_time_ms.c' and `kern/generic/millisleep.c'. * conf/i386-efi.rmk (kernel_mod_SOURCES): Add `kern/i386/tsc.c', `kern/generic/rtc_get_time_ms.c' and `kern/generic/millisleep.c'. * conf/x86_64-efi.rml (kernel_mod_SOURCES): Add `kern/generic/millisleep.c' and `kern/generic/rtc_get_time_ms.c'. * conf/sparc64-ieee1275.rmk (kernel_elf_SOURCES): Likewise. * conf/powerpc-ieee1275.rmk (kernel_elf_SOURCES): Add `kern/generic/millisleep.c'. * conf/i386-ieee1275.rmk (kernel_elf_SOURCES): Likewise. * conf/i386-coreboot.rmk (kernel_elf_SOURCES): Add `kern/time.c'. * kern/generic/rtc_get_time_ms.c: New file. * kern/generic/millisleep.c: New file. * kern/misc.c: Don't include <kern/time.h> anymore. (grub_millisleep_generic): Removed. * commands/sleep.c (grub_interruptible_millisleep): Uses grub_get_time_ms() instead of grub_get_rtc(). * include/grub/i386/tsc.h (grub_get_tsc): New file. New inline function. (grub_cpu_is_cpuid_supported): New inline function. (grub_cpu_is_tsc_supported): New inline function. (grub_tsc_init): New function prototype. (grub_tsc_get_time_ms): New function prototype. * kern/i386/tsc.c (grub_get_time_ms): New file. * include/grub/time.h: Include <grub/types.h. (grub_millisleep_generic): Removed. (grub_get_time_ms): New prototype. (grub_install_get_time_ms): New prototype. (grub_rtc_get_time_ms): New prototype. * kern/time.c (grub_get_time_ms): New function. (grub_install_get_time_ms): New function. * kern/i386/efi/init.c: Include <grub/cpu/tsc.h>. Don't include <grub/time.h> anymore. (grub_millisleep): Removed. (grub_machine_init): Call grub_tsc_init. * kern/i386/linuxbios/init.c (grub_machine_init): Install the RTC get_time_ms() implementation. * kern/sparc64/ieee1275/init.c (grub_millisleep): Removed. (ieee1275_get_time_ms): New function. (grub_machine_init): Install get_time_ms() implementation. * kern/i386/pc/init.c: Include <grub/cpu/tsc.h>. (grub_machine_init): Call grub_tsc_init(). (grub_millisleep): Removed. * kern/ieee1275/init.c (grub_millisleep): Removed. (grub_machine_init): Install ieee1275_get_time_ms() implementation. (ieee1275_get_time_ms): New function. (grub_get_rtc): Now calls ieee1275_get_time_ms(), which does the real work.
This commit is contained in:
marco_g
parent
9ec92aaf1f
commit
9c2ff3eefe
16 changed files with 133 additions and 48 deletions
79
ChangeLog
79
ChangeLog
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@ -1,3 +1,82 @@
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2008-08-05 Colin D Bennett <colin@gibibit.com>
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High resolution timer support. Implemented for x86 CPUs using TSC.
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Extracted generic grub_millisleep() so it's linked in only as needed.
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This requires a Pentium compatible CPU; if the RDTSC instruction is
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not supported, then it falls back on the generic grub_get_time_ms()
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implementation that uses the machine's RTC.
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* conf/i386-pc.rmk (kernel_img_SOURCES): Add `kern/time.c',
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`kern/i386/tsc.c', `kern/generic/rtc_get_time_ms.c' and
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`kern/generic/millisleep.c'.
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* conf/i386-efi.rmk (kernel_mod_SOURCES): Add `kern/i386/tsc.c',
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`kern/generic/rtc_get_time_ms.c' and `kern/generic/millisleep.c'.
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* conf/x86_64-efi.rml (kernel_mod_SOURCES): Add
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`kern/generic/millisleep.c' and `kern/generic/rtc_get_time_ms.c'.
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* conf/sparc64-ieee1275.rmk (kernel_elf_SOURCES): Likewise.
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* conf/powerpc-ieee1275.rmk (kernel_elf_SOURCES): Add
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`kern/generic/millisleep.c'.
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* conf/i386-ieee1275.rmk (kernel_elf_SOURCES): Likewise.
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* conf/i386-coreboot.rmk (kernel_elf_SOURCES): Add `kern/time.c'.
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* kern/generic/rtc_get_time_ms.c: New file.
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* kern/generic/millisleep.c: New file.
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* kern/misc.c: Don't include
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<kern/time.h> anymore.
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(grub_millisleep_generic): Removed.
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* commands/sleep.c (grub_interruptible_millisleep): Uses
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grub_get_time_ms() instead of grub_get_rtc().
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* include/grub/i386/tsc.h (grub_get_tsc): New file. New inline
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function.
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(grub_cpu_is_cpuid_supported): New inline function.
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(grub_cpu_is_tsc_supported): New inline function.
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(grub_tsc_init): New function prototype.
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(grub_tsc_get_time_ms): New function prototype.
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* kern/i386/tsc.c (grub_get_time_ms): New file.
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* include/grub/time.h: Include <grub/types.h.
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(grub_millisleep_generic): Removed.
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(grub_get_time_ms): New prototype.
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(grub_install_get_time_ms): New prototype.
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(grub_rtc_get_time_ms): New prototype.
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* kern/time.c (grub_get_time_ms): New function.
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(grub_install_get_time_ms): New function.
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* kern/i386/efi/init.c: Include <grub/cpu/tsc.h>. Don't include
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<grub/time.h> anymore.
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(grub_millisleep): Removed.
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(grub_machine_init): Call grub_tsc_init.
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* kern/i386/linuxbios/init.c (grub_machine_init): Install the RTC
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get_time_ms() implementation.
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* kern/sparc64/ieee1275/init.c (grub_millisleep): Removed.
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(ieee1275_get_time_ms): New function.
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(grub_machine_init): Install get_time_ms() implementation.
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* kern/i386/pc/init.c: Include <grub/cpu/tsc.h>.
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(grub_machine_init): Call grub_tsc_init().
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(grub_millisleep): Removed.
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* kern/ieee1275/init.c (grub_millisleep): Removed.
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(grub_machine_init): Install ieee1275_get_time_ms()
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implementation.
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(ieee1275_get_time_ms): New function.
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(grub_get_rtc): Now calls ieee1275_get_time_ms(), which does the
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real work.
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2008-08-05 Marco Gerards <marco@gnu.org>
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* disk/ata.c: Include <grub/pci.h>.
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@ -43,15 +43,15 @@ do_print (int n)
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grub_printf ("%d ", n);
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}
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/* Based on grub_millisleep() from kern/misc.c. */
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/* Based on grub_millisleep() from kern/generic/millisleep.c. */
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static int
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grub_interruptible_millisleep (grub_uint32_t ms)
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{
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grub_uint32_t end_at;
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end_at = grub_get_rtc () + grub_div_roundup (ms * GRUB_TICKS_PER_SECOND, 1000);
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while (grub_get_rtc () < end_at)
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grub_uint64_t start;
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start = grub_get_time_ms ();
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while (grub_get_time_ms () - start < ms)
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if (grub_checkkey () >= 0 &&
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GRUB_TERM_ASCII_CHAR (grub_getkey ()) == GRUB_TERM_ESC)
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return 1;
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@ -16,6 +16,7 @@ kernel_elf_SOURCES = kern/i386/linuxbios/startup.S kern/i386/linuxbios/init.c \
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kern/main.c kern/device.c \
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kern/disk.c kern/dl.c kern/file.c kern/fs.c kern/err.c \
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kern/misc.c kern/mm.c kern/loader.c kern/rescue.c kern/term.c \
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kern/time.c \
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kern/i386/dl.c kern/parser.c kern/partition.c \
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kern/env.c \
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term/i386/pc/console.c \
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@ -84,7 +84,10 @@ kernel_mod_SOURCES = kern/i386/efi/startup.S kern/main.c kern/device.c \
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kern/misc.c kern/mm.c kern/loader.c kern/rescue.c kern/term.c \
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kern/i386/dl.c kern/i386/efi/init.c kern/parser.c kern/partition.c \
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kern/env.c symlist.c kern/efi/efi.c kern/efi/init.c kern/efi/mm.c \
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term/efi/console.c disk/efi/efidisk.c
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term/efi/console.c disk/efi/efidisk.c \
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kern/i386/tsc.c \
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kern/generic/rtc_get_time_ms.c \
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kern/generic/millisleep.c
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kernel_mod_HEADERS = arg.h boot.h cache.h device.h disk.h dl.h elf.h elfload.h \
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env.h err.h file.h fs.h kernel.h loader.h misc.h mm.h net.h parser.h \
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partition.h pc_partition.h rescue.h symbol.h term.h time.h types.h \
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@ -19,6 +19,7 @@ kernel_elf_SOURCES = kern/i386/ieee1275/startup.S kern/i386/ieee1275/init.c \
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kern/misc.c kern/mm.c kern/loader.c kern/rescue.c kern/term.c \
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kern/i386/dl.c kern/parser.c kern/partition.c \
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kern/env.c \
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kern/generic/millisleep.c \
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kern/ieee1275/ieee1275.c \
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term/ieee1275/ofconsole.c term/i386/pc/at_keyboard.c \
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disk/ieee1275/ofdisk.c \
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@ -42,7 +42,11 @@ cdboot_img_LDFLAGS = $(COMMON_LDFLAGS) $(TARGET_IMG_LDFLAGS) -Wl,-Ttext,7C00
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kernel_img_SOURCES = kern/i386/pc/startup.S kern/main.c kern/device.c \
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kern/disk.c kern/dl.c kern/file.c kern/fs.c kern/err.c \
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kern/misc.c kern/mm.c kern/loader.c kern/rescue.c kern/term.c \
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kern/time.c \
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kern/i386/dl.c kern/i386/pc/init.c kern/parser.c kern/partition.c \
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kern/i386/tsc.c \
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kern/generic/rtc_get_time_ms.c \
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kern/generic/millisleep.c \
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kern/env.c \
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term/i386/pc/console.c \
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symlist.c
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@ -85,6 +85,7 @@ kernel_elf_SOURCES = kern/powerpc/ieee1275/crt0.S kern/ieee1275/cmain.c \
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kern/ieee1275/init.c term/ieee1275/ofconsole.c \
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kern/ieee1275/openfw.c disk/ieee1275/ofdisk.c \
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kern/parser.c kern/partition.c kern/env.c kern/powerpc/dl.c \
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kern/generic/millisleep.c \
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symlist.c kern/powerpc/cache.S
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kernel_elf_HEADERS = grub/powerpc/ieee1275/ieee1275.h
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kernel_elf_CFLAGS = $(COMMON_CFLAGS)
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@ -73,6 +73,7 @@ kernel_elf_SOURCES = kern/sparc64/ieee1275/init.c kern/ieee1275/ieee1275.c \
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kern/rescue.c kern/term.c term/ieee1275/ofconsole.c \
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kern/sparc64/ieee1275/openfw.c disk/ieee1275/ofdisk.c \
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kern/partition.c kern/env.c kern/sparc64/dl.c symlist.c \
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kern/generic/millisleep.c kern/generic/get_time_ms.c \
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kern/sparc64/cache.S kern/parser.c
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kernel_elf_HEADERS = grub/sparc64/ieee1275/ieee1275.h
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kernel_elf_CFLAGS = $(COMMON_CFLAGS)
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@ -87,6 +87,7 @@ kernel_mod_SOURCES = kern/x86_64/efi/startup.S kern/x86_64/efi/callwrap.S \
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kern/misc.c kern/mm.c kern/loader.c kern/rescue.c kern/term.c \
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kern/x86_64/dl.c kern/i386/efi/init.c kern/parser.c kern/partition.c \
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kern/env.c symlist.c kern/efi/efi.c kern/efi/init.c kern/efi/mm.c \
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kern/generic/millisleep.c kern/generic/rtc_get_time_ms.c \
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term/efi/console.c disk/efi/efidisk.c
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kernel_mod_HEADERS = arg.h boot.h cache.h device.h disk.h dl.h elf.h elfload.h \
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env.h err.h file.h fs.h kernel.h loader.h misc.h mm.h net.h parser.h \
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@ -1,6 +1,6 @@
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/*
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* GRUB -- GRand Unified Bootloader
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* Copyright (C) 2007 Free Software Foundation, Inc.
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* Copyright (C) 2007, 2008 Free Software Foundation, Inc.
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*
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* GRUB is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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@ -19,12 +19,15 @@
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#ifndef KERNEL_TIME_HEADER
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#define KERNEL_TIME_HEADER 1
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#include <grub/types.h>
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#include <grub/symbol.h>
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#include <grub/machine/time.h>
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#include <grub/cpu/time.h>
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void EXPORT_FUNC(grub_millisleep) (grub_uint32_t ms);
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void EXPORT_FUNC(grub_millisleep_generic) (grub_uint32_t ms);
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grub_uint64_t EXPORT_FUNC(grub_get_time_ms) (void);
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grub_uint64_t grub_rtc_get_time_ms (void);
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static __inline void
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grub_sleep (grub_uint32_t s)
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@ -32,4 +35,6 @@ grub_sleep (grub_uint32_t s)
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grub_millisleep (1000 * s);
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}
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void grub_install_get_time_ms (grub_uint64_t (*get_time_ms_func) (void));
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#endif /* ! KERNEL_TIME_HEADER */
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@ -25,18 +25,13 @@
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#include <grub/cache.h>
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#include <grub/kernel.h>
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#include <grub/efi/efi.h>
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#include <grub/time.h>
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void
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grub_millisleep (grub_uint32_t ms)
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{
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grub_millisleep_generic (ms);
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}
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#include <grub/cpu/tsc.h>
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void
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grub_machine_init (void)
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{
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grub_efi_init ();
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grub_tsc_init ();
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}
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void
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@ -143,6 +143,8 @@ grub_machine_init (void)
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/* This variable indicates size, not offset. */
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grub_upper_mem -= GRUB_MEMORY_MACHINE_UPPER_START;
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grub_install_get_time_ms (grub_rtc_get_time_ms);
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}
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void
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@ -30,6 +30,7 @@
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#include <grub/env.h>
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#include <grub/cache.h>
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#include <grub/time.h>
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#include <grub/cpu/tsc.h>
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struct mem_region
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{
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@ -46,12 +47,6 @@ grub_addr_t grub_os_area_addr;
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grub_size_t grub_os_area_size;
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grub_size_t grub_lower_mem, grub_upper_mem;
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void
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grub_millisleep (grub_uint32_t ms)
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{
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grub_millisleep_generic (ms);
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}
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void
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grub_arch_sync_caches (void *address __attribute__ ((unused)),
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grub_size_t len __attribute__ ((unused)))
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@ -231,6 +226,8 @@ grub_machine_init (void)
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if (! grub_os_area_addr)
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grub_fatal ("no upper memory");
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grub_tsc_init ();
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}
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void
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@ -46,12 +46,6 @@
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extern char _start[];
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extern char _end[];
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void
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grub_millisleep (grub_uint32_t ms)
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{
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grub_millisleep_generic (ms);
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}
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void
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grub_exit (void)
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{
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@ -209,6 +203,8 @@ grub_get_extended_memory (void)
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#endif
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static grub_uint64_t ieee1275_get_time_ms (void);
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void
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grub_machine_init (void)
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{
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@ -258,6 +254,8 @@ grub_machine_init (void)
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}
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}
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}
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grub_install_get_time_ms (ieee1275_get_time_ms);
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}
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void
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@ -267,8 +265,8 @@ grub_machine_fini (void)
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grub_console_fini ();
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}
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grub_uint32_t
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grub_get_rtc (void)
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static grub_uint64_t
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ieee1275_get_time_ms (void)
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{
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grub_uint32_t msecs = 0;
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@ -277,6 +275,12 @@ grub_get_rtc (void)
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return msecs;
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}
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grub_uint32_t
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grub_get_rtc (void)
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{
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return ieee1275_get_time_ms ();
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}
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grub_addr_t
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grub_arch_modules_addr (void)
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{
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12
kern/misc.c
12
kern/misc.c
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@ -23,7 +23,6 @@
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#include <stdarg.h>
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#include <grub/term.h>
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#include <grub/env.h>
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#include <grub/time.h>
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void *
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grub_memmove (void *dest, const void *src, grub_size_t n)
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@ -1018,17 +1017,6 @@ grub_utf8_to_ucs4 (grub_uint32_t *dest, const grub_uint8_t *src,
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return p - dest;
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}
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void
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grub_millisleep_generic (grub_uint32_t ms)
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{
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grub_uint32_t end_at;
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|
||||
end_at = grub_get_rtc () + grub_div_roundup (ms * GRUB_TICKS_PER_SECOND, 1000);
|
||||
|
||||
while (grub_get_rtc () < end_at)
|
||||
grub_cpu_idle ();
|
||||
}
|
||||
|
||||
/* Abort GRUB. This function does not return. */
|
||||
void
|
||||
grub_abort (void)
|
||||
|
|
|
|||
|
|
@ -66,12 +66,6 @@ _start (uint64_t r0 __attribute__((unused)),
|
|||
/* Never reached. */
|
||||
}
|
||||
|
||||
void
|
||||
grub_millisleep (grub_uint32_t ms)
|
||||
{
|
||||
grub_millisleep_generic (ms);
|
||||
}
|
||||
|
||||
int
|
||||
grub_ieee1275_test_flag (enum grub_ieee1275_flag flag)
|
||||
{
|
||||
|
|
@ -145,6 +139,8 @@ grub_machine_set_prefix (void)
|
|||
grub_free (prefix);
|
||||
}
|
||||
|
||||
grub_uint64_t ieee1275_get_time_ms (void);
|
||||
|
||||
void
|
||||
grub_machine_init (void)
|
||||
{
|
||||
|
|
@ -201,6 +197,7 @@ grub_machine_init (void)
|
|||
}
|
||||
}
|
||||
|
||||
grub_install_get_time_ms (ieee1275_get_time_ms);
|
||||
}
|
||||
|
||||
void
|
||||
|
|
@ -216,6 +213,12 @@ grub_exit (void)
|
|||
grub_ieee1275_enter ();
|
||||
}
|
||||
|
||||
grub_uint64_t
|
||||
ieee1275_get_time_ms (void)
|
||||
{
|
||||
return grub_get_rtc ();
|
||||
}
|
||||
|
||||
grub_uint32_t
|
||||
grub_get_rtc (void)
|
||||
{
|
||||
|
|
|
|||
Loading…
Add table
Reference in a new issue