From c8cc36923463a68caf1a95e4e90ec242486111ca Mon Sep 17 00:00:00 2001 From: robertmh Date: Sun, 7 Oct 2007 15:32:52 +0000 Subject: [PATCH] 2007-10-07 Robert Millan * kern/powerpc/ieee1275/init.c: Rename HEAP_LIMIT to HEAP_MAX_ADDR, and make it easier to figure out. Add HEAP_MIN_SIZE and HEAP_MAX_ADDR definitions. (grub_claim_heap): Use HEAP_MAX_ADDR rather than taking a parameter. Do not avoid claiming a region above HEAP_MAX_ADDR if that would leave us with less than HEAP_MIN_SIZE total heap. Avoid our total amount of heap to surpass HEAP_MAX_SIZE. --- ChangeLog | 11 ++++++++--- conf/i386-efi.mk | 2 +- conf/powerpc-ieee1275.mk | 14 +++++++++----- kern/powerpc/ieee1275/init.c | 32 ++++++++++++++++++++++++++------ 4 files changed, 44 insertions(+), 15 deletions(-) diff --git a/ChangeLog b/ChangeLog index d394673ec..0893704c6 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,7 +1,12 @@ -2007-10-05 Robert Millan +2007-10-07 Robert Millan - * loader/i386/pc/linux.c (grub_rescue_cmd_linux): Specify available - and required memory sizes in "too small lower memory" error. + * kern/powerpc/ieee1275/init.c: Rename HEAP_LIMIT to HEAP_MAX_ADDR, + and make it easier to figure out. + Add HEAP_MIN_SIZE and HEAP_MAX_ADDR definitions. + (grub_claim_heap): Use HEAP_MAX_ADDR rather than taking a parameter. + Do not avoid claiming a region above HEAP_MAX_ADDR if that would + leave us with less than HEAP_MIN_SIZE total heap. + Avoid our total amount of heap to surpass HEAP_MAX_SIZE. 2007-10-03 Robert Millan diff --git a/conf/i386-efi.mk b/conf/i386-efi.mk index 321fd360f..1af2f09ff 100644 --- a/conf/i386-efi.mk +++ b/conf/i386-efi.mk @@ -224,7 +224,7 @@ grub_emu_SOURCES = commands/boot.c commands/cat.c commands/cmp.c \ normal/menu.c normal/menu_entry.c normal/misc.c normal/script.c \ partmap/amiga.c partmap/apple.c partmap/pc.c partmap/sun.c \ partmap/acorn.c partmap/gpt.c \ - util/console.c util/grub-emu.c util/misc.c \ + util/console.c util/hostfs.c util/grub-emu.c util/misc.c \ util/biosdisk.c util/getroot.c \ util/i386/pc/misc.c grub_emu_init.c diff --git a/conf/powerpc-ieee1275.mk b/conf/powerpc-ieee1275.mk index d4d1b6b46..fd0baed6a 100644 --- a/conf/powerpc-ieee1275.mk +++ b/conf/powerpc-ieee1275.mk @@ -235,14 +235,14 @@ grub_emu_SOURCES = commands/boot.c commands/cat.c commands/cmp.c \ normal/menu_entry.c normal/misc.c normal/script.c \ partmap/amiga.c partmap/apple.c partmap/pc.c partmap/sun.c \ partmap/acorn.c \ - util/console.c util/grub-emu.c util/misc.c \ + util/console.c util/hostfs.c util/grub-emu.c util/misc.c \ util/biosdisk.c util/getroot.c \ util/powerpc/ieee1275/misc.c grub_script.tab.c grub_emu_init.c -CLEANFILES += grub-emu grub_emu-commands_boot.o grub_emu-commands_cat.o grub_emu-commands_cmp.o grub_emu-commands_configfile.o grub_emu-commands_help.o grub_emu-commands_search.o grub_emu-commands_terminal.o grub_emu-commands_test.o grub_emu-commands_ls.o grub_emu-commands_blocklist.o grub_emu-commands_ieee1275_halt.o grub_emu-commands_ieee1275_reboot.o grub_emu-disk_loopback.o grub_emu-fs_affs.o grub_emu-fs_ext2.o grub_emu-fs_fat.o grub_emu-fs_fshelp.o grub_emu-fs_hfs.o grub_emu-fs_iso9660.o grub_emu-fs_jfs.o grub_emu-fs_minix.o grub_emu-fs_sfs.o grub_emu-fs_ufs.o grub_emu-fs_xfs.o grub_emu-fs_hfsplus.o grub_emu-fs_ntfs.o grub_emu-io_gzio.o grub_emu-kern_device.o grub_emu-kern_disk.o grub_emu-kern_dl.o grub_emu-kern_elf.o grub_emu-kern_env.o grub_emu-kern_err.o grub_emu-kern_file.o grub_emu-kern_fs.o grub_emu-kern_loader.o grub_emu-kern_main.o grub_emu-kern_misc.o grub_emu-kern_parser.o grub_emu-kern_partition.o grub_emu-kern_rescue.o grub_emu-kern_term.o grub_emu-normal_arg.o grub_emu-normal_cmdline.o grub_emu-normal_command.o grub_emu-normal_completion.o grub_emu-normal_execute.o grub_emu-normal_function.o grub_emu-normal_lexer.o grub_emu-normal_main.o grub_emu-normal_menu.o grub_emu-normal_menu_entry.o grub_emu-normal_misc.o grub_emu-normal_script.o grub_emu-partmap_amiga.o grub_emu-partmap_apple.o grub_emu-partmap_pc.o grub_emu-partmap_sun.o grub_emu-partmap_acorn.o grub_emu-util_console.o grub_emu-util_grub_emu.o grub_emu-util_misc.o grub_emu-util_biosdisk.o grub_emu-util_getroot.o grub_emu-util_powerpc_ieee1275_misc.o grub_emu-grub_script_tab.o grub_emu-grub_emu_init.o -MOSTLYCLEANFILES += grub_emu-commands_boot.d grub_emu-commands_cat.d grub_emu-commands_cmp.d grub_emu-commands_configfile.d grub_emu-commands_help.d grub_emu-commands_search.d grub_emu-commands_terminal.d grub_emu-commands_test.d grub_emu-commands_ls.d grub_emu-commands_blocklist.d grub_emu-commands_ieee1275_halt.d grub_emu-commands_ieee1275_reboot.d grub_emu-disk_loopback.d grub_emu-fs_affs.d grub_emu-fs_ext2.d grub_emu-fs_fat.d grub_emu-fs_fshelp.d grub_emu-fs_hfs.d grub_emu-fs_iso9660.d grub_emu-fs_jfs.d grub_emu-fs_minix.d grub_emu-fs_sfs.d grub_emu-fs_ufs.d grub_emu-fs_xfs.d grub_emu-fs_hfsplus.d grub_emu-fs_ntfs.d grub_emu-io_gzio.d grub_emu-kern_device.d grub_emu-kern_disk.d grub_emu-kern_dl.d grub_emu-kern_elf.d grub_emu-kern_env.d grub_emu-kern_err.d grub_emu-kern_file.d grub_emu-kern_fs.d grub_emu-kern_loader.d grub_emu-kern_main.d grub_emu-kern_misc.d grub_emu-kern_parser.d grub_emu-kern_partition.d grub_emu-kern_rescue.d grub_emu-kern_term.d grub_emu-normal_arg.d grub_emu-normal_cmdline.d grub_emu-normal_command.d grub_emu-normal_completion.d grub_emu-normal_execute.d grub_emu-normal_function.d grub_emu-normal_lexer.d grub_emu-normal_main.d grub_emu-normal_menu.d grub_emu-normal_menu_entry.d grub_emu-normal_misc.d grub_emu-normal_script.d grub_emu-partmap_amiga.d grub_emu-partmap_apple.d grub_emu-partmap_pc.d grub_emu-partmap_sun.d grub_emu-partmap_acorn.d grub_emu-util_console.d grub_emu-util_grub_emu.d grub_emu-util_misc.d grub_emu-util_biosdisk.d grub_emu-util_getroot.d grub_emu-util_powerpc_ieee1275_misc.d grub_emu-grub_script_tab.d grub_emu-grub_emu_init.d +CLEANFILES += grub-emu grub_emu-commands_boot.o grub_emu-commands_cat.o grub_emu-commands_cmp.o grub_emu-commands_configfile.o grub_emu-commands_help.o grub_emu-commands_search.o grub_emu-commands_terminal.o grub_emu-commands_test.o grub_emu-commands_ls.o grub_emu-commands_blocklist.o grub_emu-commands_ieee1275_halt.o grub_emu-commands_ieee1275_reboot.o grub_emu-disk_loopback.o grub_emu-fs_affs.o grub_emu-fs_ext2.o grub_emu-fs_fat.o grub_emu-fs_fshelp.o grub_emu-fs_hfs.o grub_emu-fs_iso9660.o grub_emu-fs_jfs.o grub_emu-fs_minix.o grub_emu-fs_sfs.o grub_emu-fs_ufs.o grub_emu-fs_xfs.o grub_emu-fs_hfsplus.o grub_emu-fs_ntfs.o grub_emu-io_gzio.o grub_emu-kern_device.o grub_emu-kern_disk.o grub_emu-kern_dl.o grub_emu-kern_elf.o grub_emu-kern_env.o grub_emu-kern_err.o grub_emu-kern_file.o grub_emu-kern_fs.o grub_emu-kern_loader.o grub_emu-kern_main.o grub_emu-kern_misc.o grub_emu-kern_parser.o grub_emu-kern_partition.o grub_emu-kern_rescue.o grub_emu-kern_term.o grub_emu-normal_arg.o grub_emu-normal_cmdline.o grub_emu-normal_command.o grub_emu-normal_completion.o grub_emu-normal_execute.o grub_emu-normal_function.o grub_emu-normal_lexer.o grub_emu-normal_main.o grub_emu-normal_menu.o grub_emu-normal_menu_entry.o grub_emu-normal_misc.o grub_emu-normal_script.o grub_emu-partmap_amiga.o grub_emu-partmap_apple.o grub_emu-partmap_pc.o grub_emu-partmap_sun.o grub_emu-partmap_acorn.o grub_emu-util_console.o grub_emu-util_hostfs.o grub_emu-util_grub_emu.o grub_emu-util_misc.o grub_emu-util_biosdisk.o grub_emu-util_getroot.o grub_emu-util_powerpc_ieee1275_misc.o grub_emu-grub_script_tab.o grub_emu-grub_emu_init.o +MOSTLYCLEANFILES += grub_emu-commands_boot.d grub_emu-commands_cat.d grub_emu-commands_cmp.d grub_emu-commands_configfile.d grub_emu-commands_help.d grub_emu-commands_search.d grub_emu-commands_terminal.d grub_emu-commands_test.d grub_emu-commands_ls.d grub_emu-commands_blocklist.d grub_emu-commands_ieee1275_halt.d grub_emu-commands_ieee1275_reboot.d grub_emu-disk_loopback.d grub_emu-fs_affs.d grub_emu-fs_ext2.d grub_emu-fs_fat.d grub_emu-fs_fshelp.d grub_emu-fs_hfs.d grub_emu-fs_iso9660.d grub_emu-fs_jfs.d grub_emu-fs_minix.d grub_emu-fs_sfs.d grub_emu-fs_ufs.d grub_emu-fs_xfs.d grub_emu-fs_hfsplus.d grub_emu-fs_ntfs.d grub_emu-io_gzio.d grub_emu-kern_device.d grub_emu-kern_disk.d grub_emu-kern_dl.d grub_emu-kern_elf.d grub_emu-kern_env.d grub_emu-kern_err.d grub_emu-kern_file.d grub_emu-kern_fs.d grub_emu-kern_loader.d grub_emu-kern_main.d grub_emu-kern_misc.d grub_emu-kern_parser.d grub_emu-kern_partition.d grub_emu-kern_rescue.d grub_emu-kern_term.d grub_emu-normal_arg.d grub_emu-normal_cmdline.d grub_emu-normal_command.d grub_emu-normal_completion.d grub_emu-normal_execute.d grub_emu-normal_function.d grub_emu-normal_lexer.d grub_emu-normal_main.d grub_emu-normal_menu.d grub_emu-normal_menu_entry.d grub_emu-normal_misc.d grub_emu-normal_script.d grub_emu-partmap_amiga.d grub_emu-partmap_apple.d grub_emu-partmap_pc.d grub_emu-partmap_sun.d grub_emu-partmap_acorn.d grub_emu-util_console.d grub_emu-util_hostfs.d grub_emu-util_grub_emu.d grub_emu-util_misc.d grub_emu-util_biosdisk.d grub_emu-util_getroot.d grub_emu-util_powerpc_ieee1275_misc.d grub_emu-grub_script_tab.d grub_emu-grub_emu_init.d -grub-emu: $(grub_emu_DEPENDENCIES) grub_emu-commands_boot.o grub_emu-commands_cat.o grub_emu-commands_cmp.o grub_emu-commands_configfile.o grub_emu-commands_help.o grub_emu-commands_search.o grub_emu-commands_terminal.o grub_emu-commands_test.o grub_emu-commands_ls.o grub_emu-commands_blocklist.o grub_emu-commands_ieee1275_halt.o grub_emu-commands_ieee1275_reboot.o grub_emu-disk_loopback.o grub_emu-fs_affs.o grub_emu-fs_ext2.o grub_emu-fs_fat.o grub_emu-fs_fshelp.o grub_emu-fs_hfs.o grub_emu-fs_iso9660.o grub_emu-fs_jfs.o grub_emu-fs_minix.o grub_emu-fs_sfs.o grub_emu-fs_ufs.o grub_emu-fs_xfs.o grub_emu-fs_hfsplus.o grub_emu-fs_ntfs.o grub_emu-io_gzio.o grub_emu-kern_device.o grub_emu-kern_disk.o grub_emu-kern_dl.o grub_emu-kern_elf.o grub_emu-kern_env.o grub_emu-kern_err.o grub_emu-kern_file.o grub_emu-kern_fs.o grub_emu-kern_loader.o grub_emu-kern_main.o grub_emu-kern_misc.o grub_emu-kern_parser.o grub_emu-kern_partition.o grub_emu-kern_rescue.o grub_emu-kern_term.o grub_emu-normal_arg.o grub_emu-normal_cmdline.o grub_emu-normal_command.o grub_emu-normal_completion.o grub_emu-normal_execute.o grub_emu-normal_function.o grub_emu-normal_lexer.o grub_emu-normal_main.o grub_emu-normal_menu.o grub_emu-normal_menu_entry.o grub_emu-normal_misc.o grub_emu-normal_script.o grub_emu-partmap_amiga.o grub_emu-partmap_apple.o grub_emu-partmap_pc.o grub_emu-partmap_sun.o grub_emu-partmap_acorn.o grub_emu-util_console.o grub_emu-util_grub_emu.o grub_emu-util_misc.o grub_emu-util_biosdisk.o grub_emu-util_getroot.o grub_emu-util_powerpc_ieee1275_misc.o grub_emu-grub_script_tab.o grub_emu-grub_emu_init.o - $(CC) -o $@ grub_emu-commands_boot.o grub_emu-commands_cat.o grub_emu-commands_cmp.o grub_emu-commands_configfile.o grub_emu-commands_help.o grub_emu-commands_search.o grub_emu-commands_terminal.o grub_emu-commands_test.o grub_emu-commands_ls.o grub_emu-commands_blocklist.o grub_emu-commands_ieee1275_halt.o grub_emu-commands_ieee1275_reboot.o grub_emu-disk_loopback.o grub_emu-fs_affs.o grub_emu-fs_ext2.o grub_emu-fs_fat.o grub_emu-fs_fshelp.o grub_emu-fs_hfs.o grub_emu-fs_iso9660.o grub_emu-fs_jfs.o grub_emu-fs_minix.o grub_emu-fs_sfs.o grub_emu-fs_ufs.o grub_emu-fs_xfs.o grub_emu-fs_hfsplus.o grub_emu-fs_ntfs.o grub_emu-io_gzio.o grub_emu-kern_device.o grub_emu-kern_disk.o grub_emu-kern_dl.o grub_emu-kern_elf.o grub_emu-kern_env.o grub_emu-kern_err.o grub_emu-kern_file.o grub_emu-kern_fs.o grub_emu-kern_loader.o grub_emu-kern_main.o grub_emu-kern_misc.o grub_emu-kern_parser.o grub_emu-kern_partition.o grub_emu-kern_rescue.o grub_emu-kern_term.o grub_emu-normal_arg.o grub_emu-normal_cmdline.o grub_emu-normal_command.o grub_emu-normal_completion.o grub_emu-normal_execute.o grub_emu-normal_function.o grub_emu-normal_lexer.o grub_emu-normal_main.o grub_emu-normal_menu.o grub_emu-normal_menu_entry.o grub_emu-normal_misc.o grub_emu-normal_script.o grub_emu-partmap_amiga.o grub_emu-partmap_apple.o grub_emu-partmap_pc.o grub_emu-partmap_sun.o grub_emu-partmap_acorn.o grub_emu-util_console.o grub_emu-util_grub_emu.o grub_emu-util_misc.o grub_emu-util_biosdisk.o grub_emu-util_getroot.o grub_emu-util_powerpc_ieee1275_misc.o grub_emu-grub_script_tab.o grub_emu-grub_emu_init.o $(LDFLAGS) $(grub_emu_LDFLAGS) +grub-emu: $(grub_emu_DEPENDENCIES) grub_emu-commands_boot.o grub_emu-commands_cat.o grub_emu-commands_cmp.o grub_emu-commands_configfile.o grub_emu-commands_help.o grub_emu-commands_search.o grub_emu-commands_terminal.o grub_emu-commands_test.o grub_emu-commands_ls.o grub_emu-commands_blocklist.o grub_emu-commands_ieee1275_halt.o grub_emu-commands_ieee1275_reboot.o grub_emu-disk_loopback.o grub_emu-fs_affs.o grub_emu-fs_ext2.o grub_emu-fs_fat.o grub_emu-fs_fshelp.o grub_emu-fs_hfs.o grub_emu-fs_iso9660.o grub_emu-fs_jfs.o grub_emu-fs_minix.o grub_emu-fs_sfs.o grub_emu-fs_ufs.o grub_emu-fs_xfs.o grub_emu-fs_hfsplus.o grub_emu-fs_ntfs.o grub_emu-io_gzio.o grub_emu-kern_device.o grub_emu-kern_disk.o grub_emu-kern_dl.o grub_emu-kern_elf.o grub_emu-kern_env.o grub_emu-kern_err.o grub_emu-kern_file.o grub_emu-kern_fs.o grub_emu-kern_loader.o grub_emu-kern_main.o grub_emu-kern_misc.o grub_emu-kern_parser.o grub_emu-kern_partition.o grub_emu-kern_rescue.o grub_emu-kern_term.o grub_emu-normal_arg.o grub_emu-normal_cmdline.o grub_emu-normal_command.o grub_emu-normal_completion.o grub_emu-normal_execute.o grub_emu-normal_function.o grub_emu-normal_lexer.o grub_emu-normal_main.o grub_emu-normal_menu.o grub_emu-normal_menu_entry.o grub_emu-normal_misc.o grub_emu-normal_script.o grub_emu-partmap_amiga.o grub_emu-partmap_apple.o grub_emu-partmap_pc.o grub_emu-partmap_sun.o grub_emu-partmap_acorn.o grub_emu-util_console.o grub_emu-util_hostfs.o grub_emu-util_grub_emu.o grub_emu-util_misc.o grub_emu-util_biosdisk.o grub_emu-util_getroot.o grub_emu-util_powerpc_ieee1275_misc.o grub_emu-grub_script_tab.o grub_emu-grub_emu_init.o + $(CC) -o $@ grub_emu-commands_boot.o grub_emu-commands_cat.o grub_emu-commands_cmp.o grub_emu-commands_configfile.o grub_emu-commands_help.o grub_emu-commands_search.o grub_emu-commands_terminal.o grub_emu-commands_test.o grub_emu-commands_ls.o grub_emu-commands_blocklist.o grub_emu-commands_ieee1275_halt.o grub_emu-commands_ieee1275_reboot.o grub_emu-disk_loopback.o grub_emu-fs_affs.o grub_emu-fs_ext2.o grub_emu-fs_fat.o grub_emu-fs_fshelp.o grub_emu-fs_hfs.o grub_emu-fs_iso9660.o grub_emu-fs_jfs.o grub_emu-fs_minix.o grub_emu-fs_sfs.o grub_emu-fs_ufs.o grub_emu-fs_xfs.o grub_emu-fs_hfsplus.o grub_emu-fs_ntfs.o grub_emu-io_gzio.o grub_emu-kern_device.o grub_emu-kern_disk.o grub_emu-kern_dl.o grub_emu-kern_elf.o grub_emu-kern_env.o grub_emu-kern_err.o grub_emu-kern_file.o grub_emu-kern_fs.o grub_emu-kern_loader.o grub_emu-kern_main.o grub_emu-kern_misc.o grub_emu-kern_parser.o grub_emu-kern_partition.o grub_emu-kern_rescue.o grub_emu-kern_term.o grub_emu-normal_arg.o grub_emu-normal_cmdline.o grub_emu-normal_command.o grub_emu-normal_completion.o grub_emu-normal_execute.o grub_emu-normal_function.o grub_emu-normal_lexer.o grub_emu-normal_main.o grub_emu-normal_menu.o grub_emu-normal_menu_entry.o grub_emu-normal_misc.o grub_emu-normal_script.o grub_emu-partmap_amiga.o grub_emu-partmap_apple.o grub_emu-partmap_pc.o grub_emu-partmap_sun.o grub_emu-partmap_acorn.o grub_emu-util_console.o grub_emu-util_hostfs.o grub_emu-util_grub_emu.o grub_emu-util_misc.o grub_emu-util_biosdisk.o grub_emu-util_getroot.o grub_emu-util_powerpc_ieee1275_misc.o grub_emu-grub_script_tab.o grub_emu-grub_emu_init.o $(LDFLAGS) $(grub_emu_LDFLAGS) grub_emu-commands_boot.o: commands/boot.c $(commands/boot.c_DEPENDENCIES) $(CC) -Icommands -I$(srcdir)/commands $(CPPFLAGS) $(CFLAGS) -DGRUB_UTIL=1 $(grub_emu_CFLAGS) -MD -c -o $@ $< @@ -484,6 +484,10 @@ grub_emu-util_console.o: util/console.c $(util/console.c_DEPENDENCIES) $(CC) -Iutil -I$(srcdir)/util $(CPPFLAGS) $(CFLAGS) -DGRUB_UTIL=1 $(grub_emu_CFLAGS) -MD -c -o $@ $< -include grub_emu-util_console.d +grub_emu-util_hostfs.o: util/hostfs.c $(util/hostfs.c_DEPENDENCIES) + $(CC) -Iutil -I$(srcdir)/util $(CPPFLAGS) $(CFLAGS) -DGRUB_UTIL=1 $(grub_emu_CFLAGS) -MD -c -o $@ $< +-include grub_emu-util_hostfs.d + grub_emu-util_grub_emu.o: util/grub-emu.c $(util/grub-emu.c_DEPENDENCIES) $(CC) -Iutil -I$(srcdir)/util $(CPPFLAGS) $(CFLAGS) -DGRUB_UTIL=1 $(grub_emu_CFLAGS) -MD -c -o $@ $< -include grub_emu-util_grub_emu.d diff --git a/kern/powerpc/ieee1275/init.c b/kern/powerpc/ieee1275/init.c index f9caf13b4..40ce5eae8 100644 --- a/kern/powerpc/ieee1275/init.c +++ b/kern/powerpc/ieee1275/init.c @@ -33,7 +33,15 @@ #include #include -#define HEAP_LIMIT (4<<20) /* 4 MiB */ +/* The minimal heap size we can live with. */ +#define HEAP_MIN_SIZE (unsigned long) (2 * 1024 * 1024) + +/* The maximum heap size we're going to claim */ +#define HEAP_MAX_SIZE (unsigned long) (4 * 1024 * 1024) + +/* If possible, we will avoid claiming heap above this address, because it + seems to cause relocation problems with OSes that link at 4 MiB */ +#define HEAP_MAX_ADDR (unsigned long) (4 * 1024 * 1024) extern char _start[]; extern char _end[]; @@ -113,16 +121,24 @@ grub_machine_set_prefix (void) } /* Claim some available memory in the first /memory node. */ -static void grub_claim_heap (unsigned long heaplimit) +static void grub_claim_heap () { + unsigned long total = 0; + auto int heap_init (grub_uint64_t addr, grub_uint64_t len); int heap_init (grub_uint64_t addr, grub_uint64_t len) { len -= 1; /* Required for some firmware. */ - /* Don't claim anything above `heaplimit'. */ - if (addr + len > heaplimit) - len = heaplimit - addr; + /* Never exceed HEAP_MAX_SIZE */ + if (total + len > HEAP_MAX_SIZE) + len = HEAP_MAX_SIZE - total; + + /* Avoid claiming anything above HEAP_MAX_ADDR, if possible. */ + if ((addr < HEAP_MAX_ADDR) && /* if it's too late, don't bother */ + (addr + len > HEAP_MAX_ADDR) && /* if it wasn't available anyway, don't bother */ + (total + (HEAP_MAX_ADDR - addr) > HEAP_MIN_SIZE)) /* only limit ourselves when we can afford to */ + len = HEAP_MAX_ADDR - addr; if (len) { @@ -134,6 +150,10 @@ static void grub_claim_heap (unsigned long heaplimit) grub_mm_init_region ((void *) (grub_addr_t) addr, len); } + total += len; + if (total >= HEAP_MAX_SIZE) + return 1; + return 0; } @@ -147,7 +167,7 @@ grub_machine_init (void) int actual; grub_console_init (); - grub_claim_heap (HEAP_LIMIT); + grub_claim_heap (); grub_ofdisk_init (); /* Process commandline. */