Reduce memory footprint on SGI by putting modules before the kernel
as opposed to after. * grub-core/Makefile.core.def (kernel): Increase linking address. (none_decompress): Likewise. (xz_decompress): Likewise. * grub-core/boot/mips/startup_raw.S: Use prewritten uncompression address. * grub-core/kern/mips/arc/init.c (grub_machine_init): Handle memory layout change. (grub_arch_modules_addr): New function. * grub-core/kern/mips/init.c (grub_arch_modules_addr): Moved from here... * grub-core/kern/mips/loongson/init.c (grub_arch_modules_addr): .. here * grub-core/kern/mips/qemu_mips/init.c (grub_arch_modules_addr): ... and here. * grub-core/kern/mips/startup.S (total_size): Rename to ... (grub_total_modules_size): ... this. Make global. [GRUB_MACHINE_ARC]: Don't attempt to move modules out of the bss. * include/grub/offsets.h (GRUB_KERNEL_MIPS_LOONGSON_UNCOMPRESSED_ADDR): New definition. (GRUB_KERNEL_MIPS_QEMU_MIPS_UNCOMPRESSED_ADDR): Likewise. (GRUB_KERNEL_MIPS_ARC_UNCOMPRESSED_ADDR): Likewise. (GRUB_KERNEL_MACHINE_UNCOMPRESSED_ADDR): Likewise. (GRUB_KERNEL_MIPS_ARC_LINK_ADDR): Increased. * util/grub-mkimage.c (image_target_desc): New flag PLATFORM_FLAGS_MODULES_BEFORE_KERNEL. (image_targets): Set PLATFORM_FLAGS_MODULES_BEFORE_KERNEL on mips-arc. (generate_image): Handle images with modules before kernel.
This commit is contained in:
Vladimir 'phcoder' Serbinenko
parent
566a191715
commit
b772baedcd
10 changed files with 123 additions and 37 deletions
31
ChangeLog
31
ChangeLog
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@ -1,3 +1,34 @@
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2011-05-17 Vladimir Serbinenko <phcoder@gmail.com>
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Reduce memory footprint on SGI by putting modules before the kernel
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as opposed to after.
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* grub-core/Makefile.core.def (kernel): Increase linking address.
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(none_decompress): Likewise.
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(xz_decompress): Likewise.
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* grub-core/boot/mips/startup_raw.S: Use prewritten uncompression
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address.
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* grub-core/kern/mips/arc/init.c (grub_machine_init): Handle memory
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layout change.
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(grub_arch_modules_addr): New function.
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* grub-core/kern/mips/init.c (grub_arch_modules_addr): Moved from here...
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* grub-core/kern/mips/loongson/init.c (grub_arch_modules_addr): .. here
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* grub-core/kern/mips/qemu_mips/init.c (grub_arch_modules_addr): ... and
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here.
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* grub-core/kern/mips/startup.S (total_size): Rename to ...
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(grub_total_modules_size): ... this. Make global.
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[GRUB_MACHINE_ARC]: Don't attempt to move modules out of the bss.
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* include/grub/offsets.h (GRUB_KERNEL_MIPS_LOONGSON_UNCOMPRESSED_ADDR):
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New definition.
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(GRUB_KERNEL_MIPS_QEMU_MIPS_UNCOMPRESSED_ADDR): Likewise.
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(GRUB_KERNEL_MIPS_ARC_UNCOMPRESSED_ADDR): Likewise.
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(GRUB_KERNEL_MACHINE_UNCOMPRESSED_ADDR): Likewise.
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(GRUB_KERNEL_MIPS_ARC_LINK_ADDR): Increased.
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* util/grub-mkimage.c (image_target_desc): New flag
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PLATFORM_FLAGS_MODULES_BEFORE_KERNEL.
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(image_targets): Set PLATFORM_FLAGS_MODULES_BEFORE_KERNEL on mips-arc.
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(generate_image): Handle images with modules before kernel.
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2011-05-17 Vladimir Serbinenko <phcoder@gmail.com>
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Prevent potential loss of memory map by overwrite on qemu-mips.
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@ -41,7 +41,7 @@ kernel = {
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mips_loongson_ldflags = '-Wl,-Ttext,0x80200000';
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powerpc_ieee1275_ldflags = '-Wl,-Ttext,0x200000';
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sparc64_ieee1275_ldflags = '-Wl,-Ttext,0x4400';
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mips_arc_ldflags = '-Wl,-Ttext,0x8a000000';
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mips_arc_ldflags = '-Wl,-Ttext,0x8bd00000';
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mips_qemu_mips_ldflags = '-Wl,-Ttext,0x80200000';
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mips_loongson_cppflags = '-DUSE_ASCII_FAILBACK';
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@ -324,7 +324,7 @@ image = {
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objcopyflags = '-O binary';
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mips_loongson_ldflags = '-static-libgcc -Wl,-Ttext,0x80100000';
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mips_qemu_mips_ldflags = '-static-libgcc -Wl,-Ttext,0x80100000';
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mips_arc_ldflags = '-static-libgcc -Wl,-Ttext,0x89f00000';
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mips_arc_ldflags = '-static-libgcc -Wl,-Ttext,0x8bc00000';
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ldadd = '-lgcc';
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cflags = '-static-libgcc';
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enable = mips;
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@ -340,7 +340,7 @@ image = {
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objcopyflags = '-O binary';
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mips_loongson_ldflags = '-static-libgcc -Wl,-Ttext,0x80100000';
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mips_qemu_mips_ldflags = '-static-libgcc -Wl,-Ttext,0x80100000';
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mips_arc_ldflags = '-static-libgcc -Wl,-Ttext,0x89f00000';
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mips_arc_ldflags = '-static-libgcc -Wl,-Ttext,0x8bc00000';
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ldadd = '-lgcc';
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cflags = '-static-libgcc';
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enable = mips;
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@ -44,6 +44,9 @@ compressed_size:
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. = _start + GRUB_KERNEL_MACHINE_UNCOMPRESSED_SIZE
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uncompressed_size:
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.long 0
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. = _start + GRUB_KERNEL_MACHINE_UNCOMPRESSED_ADDR
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uncompressed_addr:
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.long 0
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codestart:
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/* Save our base. */
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move $s0, $ra
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@ -221,8 +224,7 @@ cmdlinedone:
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subu $a0, $a0, $t0
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addu $a0, $a0, $s0
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lui $a1, %hi(GRUB_MACHINE_LINK_ADDR)
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addiu $a1, %lo(GRUB_MACHINE_LINK_ADDR)
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lw $a1, (GRUB_KERNEL_MACHINE_UNCOMPRESSED_ADDR - BASE_ADDR)($s0)
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lw $a2, (GRUB_KERNEL_MACHINE_COMPRESSED_SIZE - BASE_ADDR)($s0)
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lw $a3, (GRUB_KERNEL_MACHINE_UNCOMPRESSED_SIZE - BASE_ADDR)($s0)
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move $s1, $a1
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@ -124,6 +124,8 @@ grub_machine_mmap_iterate (grub_memory_hook_t hook)
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}
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}
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extern grub_uint32_t grub_total_modules_size;
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void
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grub_machine_init (void)
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{
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@ -148,8 +150,10 @@ grub_machine_init (void)
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start = ((grub_uint64_t) cur->start_page) << 12;
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end = ((grub_uint64_t) cur->num_pages) << 12;
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end += start;
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if ((grub_uint64_t) end > (GRUB_KERNEL_MIPS_ARC_LINK_ADDR & 0x1fffffff))
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end = (GRUB_KERNEL_MIPS_ARC_LINK_ADDR & 0x1fffffff);
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if ((grub_uint64_t) end > ((GRUB_KERNEL_MIPS_ARC_LINK_ADDR
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- grub_total_modules_size) & 0x1fffffff))
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end = ((GRUB_KERNEL_MIPS_ARC_LINK_ADDR - grub_total_modules_size)
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& 0x1fffffff);
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if (end > start)
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grub_mm_init_region ((void *) (grub_addr_t) (start | 0x80000000),
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end - start);
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@ -160,6 +164,12 @@ grub_machine_init (void)
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grub_arcdisk_init ();
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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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return GRUB_KERNEL_MIPS_ARC_LINK_ADDR - grub_total_modules_size;
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}
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void
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grub_machine_fini (void)
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{
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@ -42,11 +42,3 @@ grub_machine_set_prefix (void)
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{
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grub_env_set ("prefix", grub_prefix);
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}
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extern char _end[];
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grub_addr_t
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grub_arch_modules_addr (void)
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{
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return (grub_addr_t) _end;
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}
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@ -257,3 +257,10 @@ grub_reboot (void)
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while (1);
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}
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extern char _end[];
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grub_addr_t
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grub_arch_modules_addr (void)
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{
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return (grub_addr_t) _end;
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}
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@ -60,3 +60,11 @@ grub_machine_mmap_iterate (grub_memory_hook_t hook)
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hook (0, grub_arch_memsize, GRUB_MEMORY_AVAILABLE);
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return GRUB_ERR_NONE;
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}
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extern char _end[];
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grub_addr_t
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grub_arch_modules_addr (void)
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{
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return (grub_addr_t) _end;
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}
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@ -37,7 +37,7 @@ start:
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nop
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. = _start + GRUB_KERNEL_MACHINE_TOTAL_MODULE_SIZE
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total_module_size:
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VARIABLE(grub_total_modules_size)
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.long 0
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. = _start + GRUB_KERNEL_MACHINE_PREFIX
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@ -84,6 +84,7 @@ cont:
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#endif
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/* Move the modules out of BSS. */
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#ifndef GRUB_MACHINE_ARC
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lui $t2, %hi(__bss_start)
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addiu $t2, %lo(__bss_start)
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@ -113,6 +114,7 @@ modulesmovcont:
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b modulesmovcont
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addiu $t3, $t3, -1
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modulesmovdone:
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#endif
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/* Clean BSS. */
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@ -106,6 +106,7 @@
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#define GRUB_KERNEL_MIPS_LOONGSON_COMPRESSED_SIZE 0x8
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#define GRUB_KERNEL_MIPS_LOONGSON_UNCOMPRESSED_SIZE 0xc
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#define GRUB_KERNEL_MIPS_LOONGSON_UNCOMPRESSED_ADDR 0x10
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#define GRUB_KERNEL_MIPS_LOONGSON_TOTAL_MODULE_SIZE 0x08
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#define GRUB_KERNEL_MIPS_LOONGSON_PREFIX 0x0c
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@ -115,16 +116,18 @@
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#define GRUB_KERNEL_MIPS_QEMU_MIPS_LINK_ALIGN 32
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#define GRUB_KERNEL_MIPS_QEMU_MIPS_COMPRESSED_SIZE 0x8
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#define GRUB_KERNEL_MIPS_QEMU_MIPS_UNCOMPRESSED_SIZE 0xc
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#define GRUB_KERNEL_MIPS_QEMU_MIPS_UNCOMPRESSED_ADDR 0x10
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#define GRUB_KERNEL_MIPS_QEMU_MIPS_TOTAL_MODULE_SIZE 0x08
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#define GRUB_KERNEL_MIPS_QEMU_MIPS_PREFIX 0x0c
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#define GRUB_KERNEL_MIPS_QEMU_MIPS_PREFIX_END 0x54
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#define GRUB_KERNEL_MIPS_ARC_LINK_ADDR 0x8a000000
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#define GRUB_KERNEL_MIPS_ARC_LINK_ADDR 0x8bd00000
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#define GRUB_KERNEL_MIPS_ARC_LINK_ALIGN 32
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#define GRUB_KERNEL_MIPS_ARC_COMPRESSED_SIZE 0x8
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#define GRUB_KERNEL_MIPS_ARC_UNCOMPRESSED_SIZE 0xc
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#define GRUB_KERNEL_MIPS_ARC_UNCOMPRESSED_ADDR 0x10
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#define GRUB_KERNEL_MIPS_ARC_TOTAL_MODULE_SIZE 0x08
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#define GRUB_KERNEL_MIPS_ARC_PREFIX 0x0c
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@ -187,6 +190,7 @@
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#define GRUB_KERNEL_MACHINE_KERNEL_IMAGE_SIZE GRUB_OFFSETS_CONCAT (GRUB_KERNEL_, GRUB_MACHINE, _KERNEL_IMAGE_SIZE)
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#define GRUB_KERNEL_MACHINE_COMPRESSED_SIZE GRUB_OFFSETS_CONCAT (GRUB_KERNEL_, GRUB_MACHINE, _COMPRESSED_SIZE)
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#define GRUB_KERNEL_MACHINE_UNCOMPRESSED_SIZE GRUB_OFFSETS_CONCAT (GRUB_KERNEL_, GRUB_MACHINE, _UNCOMPRESSED_SIZE)
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#define GRUB_KERNEL_MACHINE_UNCOMPRESSED_ADDR GRUB_OFFSETS_CONCAT (GRUB_KERNEL_, GRUB_MACHINE, _UNCOMPRESSED_ADDR)
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#define GRUB_KERNEL_MACHINE_PREFIX GRUB_OFFSETS_CONCAT (GRUB_KERNEL_, GRUB_MACHINE, _PREFIX)
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#define GRUB_KERNEL_MACHINE_PREFIX_END GRUB_OFFSETS_CONCAT (GRUB_KERNEL_, GRUB_MACHINE, _PREFIX_END)
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@ -73,7 +73,8 @@ struct image_target_desc
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{
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PLATFORM_FLAGS_NONE = 0,
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PLATFORM_FLAGS_LZMA = 1,
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PLATFORM_FLAGS_DECOMPRESSORS = 2
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PLATFORM_FLAGS_DECOMPRESSORS = 2,
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PLATFORM_FLAGS_MODULES_BEFORE_KERNEL = 4,
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} flags;
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unsigned prefix;
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unsigned prefix_end;
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@ -426,7 +427,8 @@ struct image_target_desc image_targets[] =
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.voidp_sizeof = 4,
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.bigendian = 1,
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.id = IMAGE_MIPS_ARC,
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.flags = PLATFORM_FLAGS_DECOMPRESSORS,
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.flags = (PLATFORM_FLAGS_DECOMPRESSORS
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| PLATFORM_FLAGS_MODULES_BEFORE_KERNEL),
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.prefix = GRUB_KERNEL_MIPS_ARC_PREFIX,
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.prefix_end = GRUB_KERNEL_MIPS_ARC_PREFIX_END,
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.raw_size = 0,
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@ -781,27 +783,47 @@ generate_image (const char *dir, char *prefix, FILE *out, char *mods[],
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grub_util_error (_("prefix is too long"));
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strcpy (kernel_img + image_target->prefix, prefix);
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if ((image_target->flags & PLATFORM_FLAGS_DECOMPRESSORS)
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&& (image_target->total_module_size != TARGET_NO_FIELD))
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*((grub_uint32_t *) (kernel_img + image_target->total_module_size))
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= grub_host_to_target32 (total_module_size);
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if (image_target->flags & PLATFORM_FLAGS_MODULES_BEFORE_KERNEL)
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memmove (kernel_img + total_module_size, kernel_img, kernel_size);
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if (image_target->voidp_sizeof == 8)
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{
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/* Fill in the grub_module_info structure. */
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struct grub_module_info64 *modinfo;
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modinfo = (struct grub_module_info64 *) (kernel_img + kernel_size);
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if (image_target->flags & PLATFORM_FLAGS_MODULES_BEFORE_KERNEL)
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modinfo = (struct grub_module_info64 *) kernel_img;
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else
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modinfo = (struct grub_module_info64 *) (kernel_img + kernel_size);
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memset (modinfo, 0, sizeof (struct grub_module_info64));
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modinfo->magic = grub_host_to_target32 (GRUB_MODULE_MAGIC);
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modinfo->offset = grub_host_to_target_addr (sizeof (struct grub_module_info64));
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modinfo->size = grub_host_to_target_addr (total_module_size);
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offset = kernel_size + sizeof (struct grub_module_info64);
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if (image_target->flags & PLATFORM_FLAGS_MODULES_BEFORE_KERNEL)
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offset = sizeof (struct grub_module_info64);
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else
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offset = kernel_size + sizeof (struct grub_module_info64);
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}
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else
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{
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/* Fill in the grub_module_info structure. */
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struct grub_module_info32 *modinfo;
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modinfo = (struct grub_module_info32 *) (kernel_img + kernel_size);
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if (image_target->flags & PLATFORM_FLAGS_MODULES_BEFORE_KERNEL)
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modinfo = (struct grub_module_info32 *) kernel_img;
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else
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modinfo = (struct grub_module_info32 *) (kernel_img + kernel_size);
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memset (modinfo, 0, sizeof (struct grub_module_info32));
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modinfo->magic = grub_host_to_target32 (GRUB_MODULE_MAGIC);
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modinfo->offset = grub_host_to_target_addr (sizeof (struct grub_module_info32));
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modinfo->size = grub_host_to_target_addr (total_module_size);
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offset = kernel_size + sizeof (struct grub_module_info32);
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if (image_target->flags & PLATFORM_FLAGS_MODULES_BEFORE_KERNEL)
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offset = sizeof (struct grub_module_info32);
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else
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offset = kernel_size + sizeof (struct grub_module_info32);
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}
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for (p = path_list; p; p = p->next)
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@ -852,26 +874,27 @@ generate_image (const char *dir, char *prefix, FILE *out, char *mods[],
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offset += config_size;
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}
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if ((image_target->flags & PLATFORM_FLAGS_DECOMPRESSORS)
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&& (image_target->total_module_size != TARGET_NO_FIELD))
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*((grub_uint32_t *) (kernel_img + image_target->total_module_size))
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= grub_host_to_target32 (total_module_size);
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grub_util_info ("kernel_img=%p, kernel_size=0x%x", kernel_img, kernel_size);
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compress_kernel (image_target, kernel_img, kernel_size + total_module_size,
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&core_img, &core_size, comp);
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free (kernel_img);
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if (image_target->flags & PLATFORM_FLAGS_DECOMPRESSORS)
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kernel_img = core_img + total_module_size;
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else
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kernel_img = core_img;
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grub_util_info ("the core size is 0x%x", core_size);
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if (!(image_target->flags & PLATFORM_FLAGS_DECOMPRESSORS)
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&& image_target->total_module_size != TARGET_NO_FIELD)
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*((grub_uint32_t *) (core_img + image_target->total_module_size))
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*((grub_uint32_t *) (kernel_img + image_target->total_module_size))
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= grub_host_to_target32 (total_module_size);
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if (image_target->kernel_image_size != TARGET_NO_FIELD)
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*((grub_uint32_t *) (core_img + image_target->kernel_image_size))
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*((grub_uint32_t *) (kernel_img + image_target->kernel_image_size))
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= grub_host_to_target32 (kernel_size);
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if (image_target->compressed_size != TARGET_NO_FIELD)
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*((grub_uint32_t *) (core_img + image_target->compressed_size))
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*((grub_uint32_t *) (kernel_img + image_target->compressed_size))
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= grub_host_to_target32 (core_size - image_target->raw_size);
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/* If we included a drive in our prefix, let GRUB know it doesn't have to
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@ -879,9 +902,9 @@ generate_image (const char *dir, char *prefix, FILE *out, char *mods[],
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if (image_target->install_dos_part != TARGET_NO_FIELD
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&& image_target->install_bsd_part != TARGET_NO_FIELD && prefix[0] == '(')
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{
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*((grub_int32_t *) (core_img + image_target->install_dos_part))
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*((grub_int32_t *) (kernel_img + image_target->install_dos_part))
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= grub_host_to_target32 (-2);
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*((grub_int32_t *) (core_img + image_target->install_bsd_part))
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*((grub_int32_t *) (kernel_img + image_target->install_bsd_part))
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= grub_host_to_target32 (-2);
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}
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@ -915,6 +938,13 @@ generate_image (const char *dir, char *prefix, FILE *out, char *mods[],
|
|||
*((grub_uint32_t *) (decompress_img + GRUB_KERNEL_MIPS_LOONGSON_UNCOMPRESSED_SIZE))
|
||||
= grub_host_to_target32 (kernel_size + total_module_size);
|
||||
|
||||
if (image_target->flags & PLATFORM_FLAGS_MODULES_BEFORE_KERNEL)
|
||||
*((grub_uint32_t *) (decompress_img + GRUB_KERNEL_MIPS_LOONGSON_UNCOMPRESSED_ADDR))
|
||||
= grub_host_to_target_addr (image_target->link_addr - total_module_size);
|
||||
else
|
||||
*((grub_uint32_t *) (decompress_img + GRUB_KERNEL_MIPS_LOONGSON_UNCOMPRESSED_ADDR))
|
||||
= grub_host_to_target_addr (image_target->link_addr);
|
||||
|
||||
full_size = core_size + decompress_size;
|
||||
|
||||
full_img = xmalloc (full_size);
|
||||
|
|
@ -1199,7 +1229,7 @@ generate_image (const char *dir, char *prefix, FILE *out, char *mods[],
|
|||
rom_img = xmalloc (rom_size);
|
||||
memset (rom_img, 0, rom_size);
|
||||
|
||||
*((grub_int32_t *) (core_img + GRUB_KERNEL_I386_QEMU_CORE_ENTRY_ADDR))
|
||||
*((grub_int32_t *) (kernel_img + GRUB_KERNEL_I386_QEMU_CORE_ENTRY_ADDR))
|
||||
= grub_host_to_target32 ((grub_uint32_t) -rom_size);
|
||||
|
||||
memcpy (rom_img, core_img, core_size);
|
||||
|
|
@ -1380,8 +1410,9 @@ generate_image (const char *dir, char *prefix, FILE *out, char *mods[],
|
|||
size_t program_size;
|
||||
|
||||
program_size = ALIGN_ADDR (core_size);
|
||||
target_addr = image_target->link_addr - ALIGN_UP(program_size, 1048576)
|
||||
- (1 << 20);
|
||||
target_addr = (image_target->link_addr
|
||||
- ALIGN_UP(total_module_size + core_size, 1048576)
|
||||
- (1 << 20));
|
||||
|
||||
ecoff_img = xmalloc (program_size + sizeof (*head) + sizeof (*section));
|
||||
grub_memset (ecoff_img, 0, program_size + sizeof (*head) + sizeof (*section));
|
||||
|
|
@ -1553,7 +1584,6 @@ generate_image (const char *dir, char *prefix, FILE *out, char *mods[],
|
|||
}
|
||||
|
||||
grub_util_write_image (core_img, core_size, out);
|
||||
free (kernel_img);
|
||||
free (core_img);
|
||||
free (kernel_path);
|
||||
|
||||
|
|
|
|||
Loading…
Reference in a new issue