diff --git a/ChangeLog b/ChangeLog index 6c9e3bf6d..cbd0337ab 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,3 +1,19 @@ +2010-09-03 Vladimir Serbinenko + + Compress grub_prefix. + + * grub-core/boot/i386/pc/lnxboot.S: Use + GRUB_KERNEL_I386_PC_MULTIBOOT_SIGNATURE. + * grub-core/kern/i386/pc/startup.S: Move grub_prefix to compressed part. + * include/grub/offsets.h: Rename GRUB_MACHINE_DATA_END to + GRUB_MACHINE_PREFIX_END. All users updated. + (GRUB_KERNEL_I386_PC_PREFIX): Set to GRUB_KERNEL_I386_PC_RAW_SIZE. + (GRUB_KERNEL_I386_PC_PREFIX_END): Set to GRUB_KERNEL_I386_PC_PREFIX + + 0x40. + (GRUB_KERNEL_I386_PC_RAW_SIZE): Decrease. + * util/grub-mkimage.c (image_target_desc): Change data_end to + prefix_end. All users updated. + 2010-09-03 Vladimir Serbinenko * grub-core/loader/i386/bsd.c (grub_freebsd_boot): Set %ebp to sane diff --git a/grub-core/boot/i386/pc/lnxboot.S b/grub-core/boot/i386/pc/lnxboot.S index b4f0030b8..9348553c3 100644 --- a/grub-core/boot/i386/pc/lnxboot.S +++ b/grub-core/boot/i386/pc/lnxboot.S @@ -185,7 +185,7 @@ real_code_2: call LOCAL(move_memory) /* Check for multiboot signature. */ - cmpl $MULTIBOOT_HEADER_MAGIC, %ss:(DATA_ADDR + GRUB_KERNEL_MACHINE_DATA_END) + cmpl $MULTIBOOT_HEADER_MAGIC, %ss:(DATA_ADDR + GRUB_KERNEL_I386_PC_MULTIBOOT_SIGNATURE) jz 1f movl (ramdisk_image - start), %esi diff --git a/grub-core/kern/i386/coreboot/startup.S b/grub-core/kern/i386/coreboot/startup.S index ec3a0e64b..592073776 100644 --- a/grub-core/kern/i386/coreboot/startup.S +++ b/grub-core/kern/i386/coreboot/startup.S @@ -51,7 +51,7 @@ VARIABLE(grub_prefix) * Leave some breathing room for the prefix. */ - . = _start + GRUB_KERNEL_MACHINE_DATA_END + . = _start + GRUB_KERNEL_MACHINE_PREFIX_END /* * Support for booting GRUB from a Multiboot boot loader (e.g. GRUB itself). diff --git a/grub-core/kern/i386/ieee1275/startup.S b/grub-core/kern/i386/ieee1275/startup.S index 2a04753df..3ecf09598 100644 --- a/grub-core/kern/i386/ieee1275/startup.S +++ b/grub-core/kern/i386/ieee1275/startup.S @@ -51,7 +51,7 @@ VARIABLE(grub_prefix) * Leave some breathing room for the prefix. */ - . = _start + GRUB_KERNEL_MACHINE_DATA_END + . = _start + GRUB_KERNEL_MACHINE_PREFIX_END codestart: movl %eax, EXT_C(grub_ieee1275_entry_fn) diff --git a/grub-core/kern/i386/pc/startup.S b/grub-core/kern/i386/pc/startup.S index b5e9a9b85..9b53deeb2 100644 --- a/grub-core/kern/i386/pc/startup.S +++ b/grub-core/kern/i386/pc/startup.S @@ -100,14 +100,6 @@ VARIABLE(grub_install_dos_part) .long 0xFFFFFFFF VARIABLE(grub_install_bsd_part) .long 0xFFFFFFFF -VARIABLE(grub_prefix) - /* to be filled by grub-mkimage */ - - /* - * Leave some breathing room for the prefix. - */ - - . = _start + GRUB_KERNEL_MACHINE_DATA_END #ifdef APPLE_CC bss_start: @@ -450,6 +442,16 @@ gate_a20_check_state: */ . = _start + GRUB_KERNEL_MACHINE_RAW_SIZE + . = _start + GRUB_KERNEL_MACHINE_PREFIX +VARIABLE(grub_prefix) + /* to be filled by grub-mkimage */ + + /* + * Leave some breathing room for the prefix. + */ + . = _start + GRUB_KERNEL_MACHINE_PREFIX_END + + /* * grub_exit() diff --git a/grub-core/kern/i386/qemu/startup.S b/grub-core/kern/i386/qemu/startup.S index e705953b5..680de9dc4 100644 --- a/grub-core/kern/i386/qemu/startup.S +++ b/grub-core/kern/i386/qemu/startup.S @@ -39,7 +39,7 @@ VARIABLE(grub_prefix) * Leave some breathing room for the prefix. */ - . = _start + GRUB_KERNEL_MACHINE_DATA_END + . = _start + GRUB_KERNEL_MACHINE_PREFIX_END codestart: /* Relocate to low memory. First we figure out our location. diff --git a/grub-core/kern/mips/startup.S b/grub-core/kern/mips/startup.S index 134853a9d..6811353ea 100644 --- a/grub-core/kern/mips/startup.S +++ b/grub-core/kern/mips/startup.S @@ -154,7 +154,7 @@ VARIABLE(grub_prefix) * Leave some breathing room for the prefix. */ - . = _start + GRUB_KERNEL_MACHINE_DATA_END + . = _start + GRUB_KERNEL_MACHINE_PREFIX_END #ifdef GRUB_MACHINE_MIPS_YEELOONG VARIABLE (grub_arch_busclock) .long 0 diff --git a/grub-core/kern/powerpc/ieee1275/startup.S b/grub-core/kern/powerpc/ieee1275/startup.S index 526df1d91..0b1c23346 100644 --- a/grub-core/kern/powerpc/ieee1275/startup.S +++ b/grub-core/kern/powerpc/ieee1275/startup.S @@ -39,7 +39,7 @@ VARIABLE(grub_prefix) * Leave some breathing room for the prefix. */ - . = _start + GRUB_KERNEL_MACHINE_DATA_END + . = _start + GRUB_KERNEL_MACHINE_PREFIX_END codestart: li 2, 0 diff --git a/grub-core/kern/sparc64/ieee1275/crt0.S b/grub-core/kern/sparc64/ieee1275/crt0.S index f0f47416d..f178f5d3c 100644 --- a/grub-core/kern/sparc64/ieee1275/crt0.S +++ b/grub-core/kern/sparc64/ieee1275/crt0.S @@ -42,7 +42,7 @@ VARIABLE(grub_prefix) * Leave some breathing room for the prefix. */ - . = EXT_C(_start) + GRUB_KERNEL_MACHINE_DATA_END + . = EXT_C(_start) + GRUB_KERNEL_MACHINE_PREFIX_END codestart: /* Copy the modules past the end of the kernel image. diff --git a/include/grub/offsets.h b/include/grub/offsets.h index 7763e488c..47eb6c9bd 100644 --- a/include/grub/offsets.h +++ b/include/grub/offsets.h @@ -34,14 +34,17 @@ /* The offset of GRUB_INSTALL_BSD_PART. */ #define GRUB_KERNEL_I386_PC_INSTALL_BSD_PART 0x18 -/* The offset of GRUB_PREFIX. */ -#define GRUB_KERNEL_I386_PC_PREFIX 0x1c - -/* End of the data section. */ -#define GRUB_KERNEL_I386_PC_DATA_END 0x5c +/* The offset of multiboot signature. */ +#define GRUB_KERNEL_I386_PC_MULTIBOOT_SIGNATURE 0x1c /* The size of the first region which won't be compressed. */ -#define GRUB_KERNEL_I386_PC_RAW_SIZE (GRUB_KERNEL_I386_PC_DATA_END + 0x5F0) +#define GRUB_KERNEL_I386_PC_RAW_SIZE 0x5D8 + +/* The offset of GRUB_PREFIX. */ +#define GRUB_KERNEL_I386_PC_PREFIX GRUB_KERNEL_I386_PC_RAW_SIZE + +/* End of the data section. */ +#define GRUB_KERNEL_I386_PC_PREFIX_END (GRUB_KERNEL_I386_PC_PREFIX + 0x40) /* The segment where the kernel is loaded. */ #define GRUB_BOOT_I386_PC_KERNEL_SEG 0x800 @@ -65,7 +68,7 @@ #define GRUB_KERNEL_I386_QEMU_PREFIX 0x10 /* End of the data section. */ -#define GRUB_KERNEL_I386_QEMU_DATA_END 0x50 +#define GRUB_KERNEL_I386_QEMU_PREFIX_END 0x50 #define GRUB_KERNEL_I386_QEMU_LINK_ADDR 0x8200 @@ -82,7 +85,7 @@ #define GRUB_KERNEL_SPARC64_IEEE1275_PREFIX 0x14 /* End of the data section. */ -#define GRUB_KERNEL_SPARC64_IEEE1275_DATA_END 0x114 +#define GRUB_KERNEL_SPARC64_IEEE1275_PREFIX_END 0x114 #define GRUB_BOOT_SPARC64_IEEE1275_LIST_SIZE 12 @@ -91,7 +94,7 @@ #define GRUB_KERNEL_SPARC64_IEEE1275_LINK_ADDR 0x4400 #define GRUB_KERNEL_POWERPC_IEEE1275_PREFIX 0x4 -#define GRUB_KERNEL_POWERPC_IEEE1275_DATA_END 0x44 +#define GRUB_KERNEL_POWERPC_IEEE1275_PREFIX_END 0x44 #define GRUB_KERNEL_POWERPC_IEEE1275_LINK_ALIGN 4 #define GRUB_KERNEL_POWERPC_IEEE1275_LINK_ADDR 0x200000 @@ -105,29 +108,29 @@ #define GRUB_KERNEL_MIPS_YEELOONG_KERNEL_IMAGE_SIZE 0x10 #define GRUB_KERNEL_MIPS_YEELOONG_PREFIX GRUB_KERNEL_MIPS_YEELOONG_RAW_SIZE -#define GRUB_KERNEL_MIPS_YEELOONG_DATA_END GRUB_KERNEL_MIPS_YEELOONG_RAW_SIZE + 0x48 +#define GRUB_KERNEL_MIPS_YEELOONG_PREFIX_END GRUB_KERNEL_MIPS_YEELOONG_RAW_SIZE + 0x48 /* The offset of GRUB_PREFIX. */ #define GRUB_KERNEL_I386_EFI_PREFIX 0x8 /* End of the data section. */ -#define GRUB_KERNEL_I386_EFI_DATA_END 0x50 +#define GRUB_KERNEL_I386_EFI_PREFIX_END 0x50 /* The offset of GRUB_PREFIX. */ #define GRUB_KERNEL_X86_64_EFI_PREFIX 0x8 /* End of the data section. */ -#define GRUB_KERNEL_X86_64_EFI_DATA_END 0x50 +#define GRUB_KERNEL_X86_64_EFI_PREFIX_END 0x50 #define GRUB_KERNEL_I386_COREBOOT_PREFIX 0x2 -#define GRUB_KERNEL_I386_COREBOOT_DATA_END 0x42 +#define GRUB_KERNEL_I386_COREBOOT_PREFIX_END 0x42 #define GRUB_KERNEL_I386_COREBOOT_LINK_ADDR 0x8200 #define GRUB_KERNEL_I386_MULTIBOOT_PREFIX GRUB_KERNEL_I386_COREBOOT_PREFIX -#define GRUB_KERNEL_I386_MULTIBOOT_DATA_END GRUB_KERNEL_I386_COREBOOT_DATA_END +#define GRUB_KERNEL_I386_MULTIBOOT_PREFIX_END GRUB_KERNEL_I386_COREBOOT_PREFIX_END #define GRUB_KERNEL_I386_IEEE1275_PREFIX 0x2 -#define GRUB_KERNEL_I386_IEEE1275_DATA_END 0x42 +#define GRUB_KERNEL_I386_IEEE1275_PREFIX_END 0x42 #define GRUB_KERNEL_I386_IEEE1275_LINK_ADDR 0x10000 #define GRUB_KERNEL_I386_IEEE1275_MOD_ALIGN 0x1000 @@ -157,7 +160,7 @@ #define GRUB_KERNEL_MACHINE_COMPRESSED_SIZE GRUB_OFFSETS_CONCAT (GRUB_KERNEL_, MACHINE, _COMPRESSED_SIZE) #define GRUB_KERNEL_MACHINE_PREFIX GRUB_OFFSETS_CONCAT (GRUB_KERNEL_, MACHINE, _PREFIX) -#define GRUB_KERNEL_MACHINE_DATA_END GRUB_OFFSETS_CONCAT (GRUB_KERNEL_, MACHINE, _DATA_END) +#define GRUB_KERNEL_MACHINE_PREFIX_END GRUB_OFFSETS_CONCAT (GRUB_KERNEL_, MACHINE, _PREFIX_END) #define GRUB_BOOT_MACHINE_KERNEL_SEG GRUB_OFFSETS_CONCAT (GRUB_BOOT_, MACHINE, _KERNEL_SEG) #define GRUB_MEMORY_MACHINE_UPPER GRUB_OFFSETS_CONCAT (GRUB_MEMORY_, MACHINE, _UPPER) #define GRUB_KERNEL_MACHINE_RAW_SIZE GRUB_OFFSETS_CONCAT (GRUB_KERNEL_, MACHINE, _RAW_SIZE) diff --git a/util/grub-mkimage.c b/util/grub-mkimage.c index 4e151dd62..d798ad052 100644 --- a/util/grub-mkimage.c +++ b/util/grub-mkimage.c @@ -63,7 +63,7 @@ struct image_target_desc PLATFORM_FLAGS_LZMA = 1 } flags; unsigned prefix; - unsigned data_end; + unsigned prefix_end; unsigned raw_size; unsigned total_module_size; unsigned kernel_image_size; @@ -86,7 +86,7 @@ struct image_target_desc image_targets[] = .id = IMAGE_COREBOOT, .flags = PLATFORM_FLAGS_NONE, .prefix = GRUB_KERNEL_I386_COREBOOT_PREFIX, - .data_end = GRUB_KERNEL_I386_COREBOOT_DATA_END, + .prefix_end = GRUB_KERNEL_I386_COREBOOT_PREFIX_END, .raw_size = 0, .total_module_size = TARGET_NO_FIELD, .kernel_image_size = TARGET_NO_FIELD, @@ -108,7 +108,7 @@ struct image_target_desc image_targets[] = .id = IMAGE_COREBOOT, .flags = PLATFORM_FLAGS_NONE, .prefix = GRUB_KERNEL_I386_MULTIBOOT_PREFIX, - .data_end = GRUB_KERNEL_I386_MULTIBOOT_DATA_END, + .prefix_end = GRUB_KERNEL_I386_MULTIBOOT_PREFIX_END, .raw_size = 0, .total_module_size = TARGET_NO_FIELD, .kernel_image_size = TARGET_NO_FIELD, @@ -130,7 +130,7 @@ struct image_target_desc image_targets[] = .id = IMAGE_I386_PC, .flags = PLATFORM_FLAGS_LZMA, .prefix = GRUB_KERNEL_I386_PC_PREFIX, - .data_end = GRUB_KERNEL_I386_PC_DATA_END, + .prefix_end = GRUB_KERNEL_I386_PC_PREFIX_END, .raw_size = GRUB_KERNEL_I386_PC_RAW_SIZE, .total_module_size = GRUB_KERNEL_I386_PC_TOTAL_MODULE_SIZE, .kernel_image_size = GRUB_KERNEL_I386_PC_KERNEL_IMAGE_SIZE, @@ -148,7 +148,7 @@ struct image_target_desc image_targets[] = .id = IMAGE_I386_PC_PXE, .flags = PLATFORM_FLAGS_LZMA, .prefix = GRUB_KERNEL_I386_PC_PREFIX, - .data_end = GRUB_KERNEL_I386_PC_DATA_END, + .prefix_end = GRUB_KERNEL_I386_PC_PREFIX_END, .raw_size = GRUB_KERNEL_I386_PC_RAW_SIZE, .total_module_size = GRUB_KERNEL_I386_PC_TOTAL_MODULE_SIZE, .kernel_image_size = GRUB_KERNEL_I386_PC_KERNEL_IMAGE_SIZE, @@ -166,7 +166,7 @@ struct image_target_desc image_targets[] = .id = IMAGE_EFI, .flags = PLATFORM_FLAGS_NONE, .prefix = GRUB_KERNEL_I386_EFI_PREFIX, - .data_end = GRUB_KERNEL_I386_EFI_DATA_END, + .prefix_end = GRUB_KERNEL_I386_EFI_PREFIX_END, .raw_size = 0, .total_module_size = TARGET_NO_FIELD, .kernel_image_size = TARGET_NO_FIELD, @@ -188,7 +188,7 @@ struct image_target_desc image_targets[] = .id = IMAGE_I386_IEEE1275, .flags = PLATFORM_FLAGS_NONE, .prefix = GRUB_KERNEL_I386_IEEE1275_PREFIX, - .data_end = GRUB_KERNEL_I386_IEEE1275_DATA_END, + .prefix_end = GRUB_KERNEL_I386_IEEE1275_PREFIX_END, .raw_size = 0, .total_module_size = TARGET_NO_FIELD, .kernel_image_size = TARGET_NO_FIELD, @@ -210,7 +210,7 @@ struct image_target_desc image_targets[] = .id = IMAGE_QEMU, .flags = PLATFORM_FLAGS_NONE, .prefix = GRUB_KERNEL_I386_QEMU_PREFIX, - .data_end = GRUB_KERNEL_I386_QEMU_DATA_END, + .prefix_end = GRUB_KERNEL_I386_QEMU_PREFIX_END, .raw_size = 0, .total_module_size = TARGET_NO_FIELD, .compressed_size = TARGET_NO_FIELD, @@ -228,7 +228,7 @@ struct image_target_desc image_targets[] = .id = IMAGE_EFI, .flags = PLATFORM_FLAGS_NONE, .prefix = GRUB_KERNEL_X86_64_EFI_PREFIX, - .data_end = GRUB_KERNEL_X86_64_EFI_DATA_END, + .prefix_end = GRUB_KERNEL_X86_64_EFI_PREFIX_END, .raw_size = 0, .total_module_size = TARGET_NO_FIELD, .kernel_image_size = TARGET_NO_FIELD, @@ -250,7 +250,7 @@ struct image_target_desc image_targets[] = .id = IMAGE_YEELOONG_FLASH, .flags = PLATFORM_FLAGS_NONE, .prefix = GRUB_KERNEL_MIPS_YEELOONG_PREFIX, - .data_end = GRUB_KERNEL_MIPS_YEELOONG_DATA_END, + .prefix_end = GRUB_KERNEL_MIPS_YEELOONG_PREFIX_END, .raw_size = GRUB_KERNEL_MIPS_YEELOONG_RAW_SIZE, .total_module_size = GRUB_KERNEL_MIPS_YEELOONG_TOTAL_MODULE_SIZE, .compressed_size = GRUB_KERNEL_MIPS_YEELOONG_COMPRESSED_SIZE, @@ -270,7 +270,7 @@ struct image_target_desc image_targets[] = .id = IMAGE_YEELOONG_ELF, .flags = PLATFORM_FLAGS_NONE, .prefix = GRUB_KERNEL_MIPS_YEELOONG_PREFIX, - .data_end = GRUB_KERNEL_MIPS_YEELOONG_DATA_END, + .prefix_end = GRUB_KERNEL_MIPS_YEELOONG_PREFIX_END, .raw_size = GRUB_KERNEL_MIPS_YEELOONG_RAW_SIZE, .total_module_size = GRUB_KERNEL_MIPS_YEELOONG_TOTAL_MODULE_SIZE, .compressed_size = GRUB_KERNEL_MIPS_YEELOONG_COMPRESSED_SIZE, @@ -290,7 +290,7 @@ struct image_target_desc image_targets[] = .id = IMAGE_PPC, .flags = PLATFORM_FLAGS_NONE, .prefix = GRUB_KERNEL_POWERPC_IEEE1275_PREFIX, - .data_end = GRUB_KERNEL_POWERPC_IEEE1275_DATA_END, + .prefix_end = GRUB_KERNEL_POWERPC_IEEE1275_PREFIX_END, .raw_size = 0, .total_module_size = TARGET_NO_FIELD, .kernel_image_size = TARGET_NO_FIELD, @@ -312,7 +312,7 @@ struct image_target_desc image_targets[] = .id = IMAGE_SPARC64_RAW, .flags = PLATFORM_FLAGS_NONE, .prefix = GRUB_KERNEL_SPARC64_IEEE1275_PREFIX, - .data_end = GRUB_KERNEL_SPARC64_IEEE1275_DATA_END, + .prefix_end = GRUB_KERNEL_SPARC64_IEEE1275_PREFIX_END, .raw_size = GRUB_KERNEL_SPARC64_IEEE1275_RAW_SIZE, .total_module_size = GRUB_KERNEL_SPARC64_IEEE1275_TOTAL_MODULE_SIZE, .kernel_image_size = GRUB_KERNEL_SPARC64_IEEE1275_KERNEL_IMAGE_SIZE, @@ -330,7 +330,7 @@ struct image_target_desc image_targets[] = .id = IMAGE_SPARC64_AOUT, .flags = PLATFORM_FLAGS_NONE, .prefix = GRUB_KERNEL_SPARC64_IEEE1275_PREFIX, - .data_end = GRUB_KERNEL_SPARC64_IEEE1275_DATA_END, + .prefix_end = GRUB_KERNEL_SPARC64_IEEE1275_PREFIX_END, .raw_size = GRUB_KERNEL_SPARC64_IEEE1275_RAW_SIZE, .total_module_size = GRUB_KERNEL_SPARC64_IEEE1275_TOTAL_MODULE_SIZE, .kernel_image_size = GRUB_KERNEL_SPARC64_IEEE1275_KERNEL_IMAGE_SIZE, @@ -578,7 +578,7 @@ generate_image (const char *dir, char *prefix, FILE *out, char *mods[], total_module_size, &start_address, &rel_section, &reloc_size, &align, image_target); - if (image_target->prefix + strlen (prefix) + 1 > image_target->data_end) + if (image_target->prefix + strlen (prefix) + 1 > image_target->prefix_end) grub_util_error (_("prefix is too long")); strcpy (kernel_img + image_target->prefix, prefix);