diff options
Diffstat (limited to 'arch/arm/boot/compressed')
| -rw-r--r-- | arch/arm/boot/compressed/Makefile | 56 | ||||
| -rw-r--r-- | arch/arm/boot/compressed/head-sa1100.S | 1 | ||||
| -rw-r--r-- | arch/arm/boot/compressed/head-shark.S | 1 | ||||
| -rw-r--r-- | arch/arm/boot/compressed/head-shmobile.S | 12 | ||||
| -rw-r--r-- | arch/arm/boot/compressed/head.S | 167 | ||||
| -rw-r--r-- | arch/arm/boot/compressed/misc.c | 42 | ||||
| -rw-r--r-- | arch/arm/boot/compressed/mmcif-sh7372.c | 4 | ||||
| -rw-r--r-- | arch/arm/boot/compressed/vmlinux.lds.in | 16 |
8 files changed, 185 insertions, 114 deletions
diff --git a/arch/arm/boot/compressed/Makefile b/arch/arm/boot/compressed/Makefile index 54c9428..5954a1a 100644 --- a/arch/arm/boot/compressed/Makefile +++ b/arch/arm/boot/compressed/Makefile @@ -6,25 +6,30 @@ OBJS = -# Ensure that mmcif loader code appears early in the image +# Ensure that MMCIF loader code appears early in the image # to minimise that number of bocks that have to be read in # order to load it. ifeq ($(CONFIG_ZBOOT_ROM_MMCIF),y) -ifeq ($(CONFIG_ARCH_SH7372),y) OBJS += mmcif-sh7372.o endif + +# Ensure that SDHI loader code appears early in the image +# to minimise that number of bocks that have to be read in +# order to load it. +ifeq ($(CONFIG_ZBOOT_ROM_SH_MOBILE_SDHI),y) +OBJS += sdhi-shmobile.o +OBJS += sdhi-sh7372.o endif AFLAGS_head.o += -DTEXT_OFFSET=$(TEXT_OFFSET) -# change@wtl.rsengott -# FIPS_KERNEL_RAM_BASE is start of kernel text in RAM -ifeq ($(CONFIG_CRYPTO_FIPS),y) -AFLAGS_head.o += -DFIPS_KERNEL_RAM_BASE=0x40008000 -endif HEAD = head.o OBJS += misc.o decompress.o FONTC = $(srctree)/drivers/video/console/font_acorn_8x8.c +# string library code (-Os is enforced to keep it much smaller) +OBJS += string.o +CFLAGS_string.o := -Os + # # Architecture dependencies # @@ -88,21 +93,40 @@ suffix_$(CONFIG_KERNEL_GZIP) = gzip suffix_$(CONFIG_KERNEL_LZO) = lzo suffix_$(CONFIG_KERNEL_LZMA) = lzma +# Borrowed libfdt files for the ATAG compatibility mode + +libfdt := fdt_rw.c fdt_ro.c fdt_wip.c fdt.c +libfdt_hdrs := fdt.h libfdt.h libfdt_internal.h + +libfdt_objs := $(addsuffix .o, $(basename $(libfdt))) + +$(addprefix $(obj)/,$(libfdt) $(libfdt_hdrs)): $(obj)/%: $(srctree)/scripts/dtc/libfdt/% + $(call cmd,shipped) + +$(addprefix $(obj)/,$(libfdt_objs) atags_to_fdt.o): \ + $(addprefix $(obj)/,$(libfdt_hdrs)) + +ifeq ($(CONFIG_ARM_ATAG_DTB_COMPAT),y) +OBJS += $(libfdt_objs) atags_to_fdt.o +endif + targets := vmlinux vmlinux.lds \ piggy.$(suffix_y) piggy.$(suffix_y).o \ - font.o font.c head.o misc.o $(OBJS) + lib1funcs.o lib1funcs.S font.o font.c head.o misc.o $(OBJS) # Make sure files are removed during clean -extra-y += piggy.gzip piggy.lzo piggy.lzma lib1funcs.S +extra-y += piggy.gzip piggy.lzo piggy.lzma lib1funcs.S $(libfdt) $(libfdt_hdrs) ifeq ($(CONFIG_FUNCTION_TRACER),y) ORIG_CFLAGS := $(KBUILD_CFLAGS) KBUILD_CFLAGS = $(subst -pg, , $(ORIG_CFLAGS)) endif -ccflags-y := -fpic -fno-builtin -asflags-y := -Wa,-march=all +ccflags-y := -fpic -fno-builtin -I$(obj) +# Supply kernel BSS size to the decompressor via a linker symbol. +KBSS_SZ = $(shell size $(obj)/../../../../vmlinux | awk 'END{print $$3}') +LDFLAGS_vmlinux = --defsym _kernel_bss_size=$(KBSS_SZ) # Supply ZRELADDR to the decompressor via a linker symbol. ifneq ($(CONFIG_AUTO_ZRELADDR),y) LDFLAGS_vmlinux += --defsym zreladdr=$(ZRELADDR) @@ -122,7 +146,7 @@ LDFLAGS_vmlinux += -T # For __aeabi_uidivmod lib1funcs = $(obj)/lib1funcs.o -$(obj)/lib1funcs.S: $(srctree)/arch/$(SRCARCH)/lib/lib1funcs.S FORCE +$(obj)/lib1funcs.S: $(srctree)/arch/$(SRCARCH)/lib/lib1funcs.S $(call cmd,shipped) # We need to prevent any GOTOFF relocs being used with references @@ -138,8 +162,16 @@ bad_syms=$$($(CROSS_COMPILE)nm $@ | sed -n 's/^.\{8\} [bc] \(.*\)/\1/p') && \ ( echo "following symbols must have non local/private scope:" >&2; \ echo "$$bad_syms" >&2; rm -f $@; false ) +check_for_multiple_zreladdr = \ +if [ $(words $(ZRELADDR)) -gt 1 -a "$(CONFIG_AUTO_ZRELADDR)" = "" ]; then \ + echo 'multiple zreladdrs: $(ZRELADDR)'; \ + echo 'This needs CONFIG_AUTO_ZRELADDR to be set'; \ + false; \ +fi + $(obj)/vmlinux: $(obj)/vmlinux.lds $(obj)/$(HEAD) $(obj)/piggy.$(suffix_y).o \ $(addprefix $(obj)/, $(OBJS)) $(lib1funcs) FORCE + @$(check_for_multiple_zreladdr) $(call if_changed,ld) @$(check_for_bad_syms) diff --git a/arch/arm/boot/compressed/head-sa1100.S b/arch/arm/boot/compressed/head-sa1100.S index 6179d94..3115e31 100644 --- a/arch/arm/boot/compressed/head-sa1100.S +++ b/arch/arm/boot/compressed/head-sa1100.S @@ -11,6 +11,7 @@ #include <asm/mach-types.h> .section ".start", "ax" + .arch armv4 __SA1100_start: diff --git a/arch/arm/boot/compressed/head-shark.S b/arch/arm/boot/compressed/head-shark.S index 089c560..92b5689 100644 --- a/arch/arm/boot/compressed/head-shark.S +++ b/arch/arm/boot/compressed/head-shark.S @@ -18,6 +18,7 @@ .section ".start", "ax" + .arch armv4 b __beginning __ofw_data: .long 0 @ the number of memory blocks diff --git a/arch/arm/boot/compressed/head-shmobile.S b/arch/arm/boot/compressed/head-shmobile.S index c943d2e..fe3719b 100644 --- a/arch/arm/boot/compressed/head-shmobile.S +++ b/arch/arm/boot/compressed/head-shmobile.S @@ -25,14 +25,14 @@ /* load board-specific initialization code */ #include <mach/zboot.h> -#ifdef CONFIG_ZBOOT_ROM_MMCIF - /* Load image from MMC */ - adr sp, __tmp_stack + 128 +#if defined(CONFIG_ZBOOT_ROM_MMCIF) || defined(CONFIG_ZBOOT_ROM_SH_MOBILE_SDHI) + /* Load image from MMC/SD */ + adr sp, __tmp_stack + 256 ldr r0, __image_start ldr r1, __image_end subs r1, r1, r0 ldr r0, __load_base - bl mmcif_loader + bl mmc_loader /* Jump to loaded code */ ldr r0, __loaded @@ -51,9 +51,9 @@ __loaded: .long __continue .align __tmp_stack: - .space 128 + .space 256 __continue: -#endif /* CONFIG_ZBOOT_ROM_MMCIF */ +#endif /* CONFIG_ZBOOT_ROM_MMC || CONFIG_ZBOOT_ROM_SH_MOBILE_SDHI */ b 1f __atags:@ tag #1 diff --git a/arch/arm/boot/compressed/head.S b/arch/arm/boot/compressed/head.S index e28de2a..8c57359 100644 --- a/arch/arm/boot/compressed/head.S +++ b/arch/arm/boot/compressed/head.S @@ -10,6 +10,7 @@ */ #include <linux/linkage.h> + .arch armv7-a /* * Debugging stuff * @@ -216,6 +217,104 @@ restart: adr r0, LC0 mov r10, r6 #endif + mov r5, #0 @ init dtb size to 0 +#ifdef CONFIG_ARM_APPENDED_DTB +/* + * r0 = delta + * r2 = BSS start + * r3 = BSS end + * r4 = final kernel address + * r5 = appended dtb size (still unknown) + * r6 = _edata + * r7 = architecture ID + * r8 = atags/device tree pointer + * r9 = size of decompressed image + * r10 = end of this image, including bss/stack/malloc space if non XIP + * r11 = GOT start + * r12 = GOT end + * sp = stack pointer + * + * if there are device trees (dtb) appended to zImage, advance r10 so that the + * dtb data will get relocated along with the kernel if necessary. + */ + + ldr lr, [r6, #0] +#ifndef __ARMEB__ + ldr r1, =0xedfe0dd0 @ sig is 0xd00dfeed big endian +#else + ldr r1, =0xd00dfeed +#endif + cmp lr, r1 + bne dtb_check_done @ not found + +#ifdef CONFIG_ARM_ATAG_DTB_COMPAT + /* + * OK... Let's do some funky business here. + * If we do have a DTB appended to zImage, and we do have + * an ATAG list around, we want the later to be translated + * and folded into the former here. To be on the safe side, + * let's temporarily move the stack away into the malloc + * area. No GOT fixup has occurred yet, but none of the + * code we're about to call uses any global variable. + */ + add sp, sp, #0x10000 + stmfd sp!, {r0-r3, ip, lr} + mov r0, r8 + mov r1, r6 + sub r2, sp, r6 + bl atags_to_fdt + + /* + * If returned value is 1, there is no ATAG at the location + * pointed by r8. Try the typical 0x100 offset from start + * of RAM and hope for the best. + */ + cmp r0, #1 + sub r0, r4, #TEXT_OFFSET + add r0, r0, #0x100 + mov r1, r6 + sub r2, sp, r6 + bleq atags_to_fdt + + ldmfd sp!, {r0-r3, ip, lr} + sub sp, sp, #0x10000 +#endif + + mov r8, r6 @ use the appended device tree + + /* + * Make sure that the DTB doesn't end up in the final + * kernel's .bss area. To do so, we adjust the decompressed + * kernel size to compensate if that .bss size is larger + * than the relocated code. + */ + ldr r5, =_kernel_bss_size + adr r1, wont_overwrite + sub r1, r6, r1 + subs r1, r5, r1 + addhi r9, r9, r1 + + /* Get the dtb's size */ + ldr r5, [r6, #4] +#ifndef __ARMEB__ + /* convert r5 (dtb size) to little endian */ + eor r1, r5, r5, ror #16 + bic r1, r1, #0x00ff0000 + mov r5, r5, ror #8 + eor r5, r5, r1, lsr #8 +#endif + + /* preserve 64-bit alignment */ + add r5, r5, #7 + bic r5, r5, #7 + + /* relocate some pointers past the appended dtb */ + add r6, r6, r5 + add r10, r10, r5 + add sp, sp, r5 +dtb_check_done: +#endif + /* * Check to see if we will overwrite ourselves. * r4 = final kernel address @@ -223,15 +322,14 @@ restart: adr r0, LC0 * r10 = end of this image, including bss/stack/malloc space if non XIP * We basically want: * r4 - 16k page directory >= r10 -> OK - * r4 + image length <= current position (pc) -> OK + * r4 + image length <= address of wont_overwrite -> OK */ add r10, r10, #16384 cmp r4, r10 bhs wont_overwrite add r10, r4, r9 - ARM( cmp r10, pc ) - THUMB( mov lr, pc ) - THUMB( cmp r10, lr ) + adr r9, wont_overwrite + cmp r10, r9 bls wont_overwrite /* @@ -285,20 +383,16 @@ wont_overwrite: * r2 = BSS start * r3 = BSS end * r4 = kernel execution address + * r5 = appended dtb size (0 if not present) * r7 = architecture ID * r8 = atags pointer * r11 = GOT start * r12 = GOT end * sp = stack pointer */ - teq r0, #0 -#ifndef CONFIG_CRYPTO_FIPS + orrs r1, r0, r5 beq not_relocated -#else - movw r5, #:lower16:zimage_ram_base_addr - movt r5, #:upper16:zimage_ram_base_addr - beq not_relocated_copy -#endif + add r11, r11, r0 add r12, r12, r0 @@ -311,19 +405,23 @@ wont_overwrite: add r2, r2, r0 add r3, r3, r0 -#ifdef CONFIG_CRYPTO_FIPS - movw r5, #:lower16:zimage_ram_base_addr - movt r5, #:upper16:zimage_ram_base_addr - bl copy_compressed -#endif /* * Relocate all entries in the GOT table. + * Bump bss entries to _edata + dtb size */ 1: ldr r1, [r11, #0] @ relocate entries in the GOT - add r1, r1, r0 @ table. This fixes up the - str r1, [r11], #4 @ C references. + add r1, r1, r0 @ This fixes up C references + cmp r1, r2 @ if entry >= bss_start && + cmphs r3, r1 @ bss_end > entry + addhi r1, r1, r5 @ entry += dtb size + str r1, [r11], #4 @ next entry cmp r11, r12 blo 1b + + /* bump our bss pointers too */ + add r2, r2, r5 + add r3, r3, r5 + #else /* @@ -364,7 +462,8 @@ not_relocated: mov r0, #0 mov r0, #0 @ must be zero mov r1, r7 @ restore architecture number mov r2, r8 @ restore atags pointer - mov pc, r4 @ call kernel + ARM( mov pc, r4 ) @ call kernel + THUMB( bx r4 ) @ entry point is always ARM .align 2 .type LC0, #object @@ -378,10 +477,6 @@ LC0: .word LC0 @ r1 .word .L_user_stack_end @ sp .size LC0, . - LC0 -#ifdef CONFIG_CRYPTO_FIPS - .equ zimage_ram_base_addr, FIPS_KERNEL_RAM_BASE -#endif - #ifdef CONFIG_ARCH_RPC .globl params params: ldr r0, =0x10000100 @ params_phys for RPC @@ -390,29 +485,6 @@ params: ldr r0, =0x10000100 @ params_phys for RPC .align #endif - -#ifdef CONFIG_CRYPTO_FIPS -not_relocated_copy: - bl copy_compressed - b not_relocated - -copy_compressed: - mov r1, r5 - add r9, r4, #CONFIG_CRYPTO_FIPS_INTEG_OFFSET - -1: - ldmia r1!, {r5} - stmia r9!, {r5} - cmp r1, r2 - blo 1b - - .rept 8 - ldmia r1!, {r5} - stmia r9!, {r5} - .endr - mov pc, lr -#endif - /* * Turn on the cache. We need to setup some page tables so that we * can have both the I and D caches on. @@ -695,8 +767,6 @@ proc_types: @ b __arm6_mmu_cache_off @ b __armv3_mmu_cache_flush -#if !defined(CONFIG_CPU_V7) - /* This collides with some V7 IDs, preventing correct detection */ .word 0x00000000 @ old ARM ID .word 0x0000f000 mov pc, lr @@ -705,7 +775,6 @@ proc_types: THUMB( nop ) mov pc, lr THUMB( nop ) -#endif .word 0x41007000 @ ARM7/710 .word 0xfff8fe00 diff --git a/arch/arm/boot/compressed/misc.c b/arch/arm/boot/compressed/misc.c index 832d372..8e2a8fc 100644 --- a/arch/arm/boot/compressed/misc.c +++ b/arch/arm/boot/compressed/misc.c @@ -18,14 +18,9 @@ unsigned int __machine_arch_type; -#define _LINUX_STRING_H_ - #include <linux/compiler.h> /* for inline */ -#include <linux/types.h> /* for size_t */ -#include <linux/stddef.h> /* for NULL */ +#include <linux/types.h> #include <linux/linkage.h> -#include <asm/string.h> - static void putstr(const char *ptr); extern void error(char *x); @@ -101,41 +96,6 @@ static void putstr(const char *ptr) flush(); } - -void *memcpy(void *__dest, __const void *__src, size_t __n) -{ - int i = 0; - unsigned char *d = (unsigned char *)__dest, *s = (unsigned char *)__src; - - for (i = __n >> 3; i > 0; i--) { - *d++ = *s++; - *d++ = *s++; - *d++ = *s++; - *d++ = *s++; - *d++ = *s++; - *d++ = *s++; - *d++ = *s++; - *d++ = *s++; - } - - if (__n & 1 << 2) { - *d++ = *s++; - *d++ = *s++; - *d++ = *s++; - *d++ = *s++; - } - - if (__n & 1 << 1) { - *d++ = *s++; - *d++ = *s++; - } - - if (__n & 1) - *d++ = *s++; - - return __dest; -} - /* * gzip declarations */ diff --git a/arch/arm/boot/compressed/mmcif-sh7372.c b/arch/arm/boot/compressed/mmcif-sh7372.c index 7453c83..672ae95 100644 --- a/arch/arm/boot/compressed/mmcif-sh7372.c +++ b/arch/arm/boot/compressed/mmcif-sh7372.c @@ -40,7 +40,7 @@ * to an MMC card * # dd if=vrl4.out of=/dev/sdx bs=512 seek=1 */ -asmlinkage void mmcif_loader(unsigned char *buf, unsigned long len) +asmlinkage void mmc_loader(unsigned char *buf, unsigned long len) { mmc_init_progress(); mmc_update_progress(MMC_PROGRESS_ENTER); @@ -82,7 +82,7 @@ asmlinkage void mmcif_loader(unsigned char *buf, unsigned long len) /* Disable clock to MMC hardware block */ - __raw_writel(__raw_readl(SMSTPCR3) & (1 << 12), SMSTPCR3); + __raw_writel(__raw_readl(SMSTPCR3) | (1 << 12), SMSTPCR3); mmc_update_progress(MMC_PROGRESS_DONE); } diff --git a/arch/arm/boot/compressed/vmlinux.lds.in b/arch/arm/boot/compressed/vmlinux.lds.in index ea80abe..4919f2a 100644 --- a/arch/arm/boot/compressed/vmlinux.lds.in +++ b/arch/arm/boot/compressed/vmlinux.lds.in @@ -33,20 +33,28 @@ SECTIONS *(.text.*) *(.fixup) *(.gnu.warning) + *(.glue_7t) + *(.glue_7) + } + .rodata : { *(.rodata) *(.rodata.*) - *(.glue_7) - *(.glue_7t) + } + .piggydata : { *(.piggydata) - . = ALIGN(4); } + . = ALIGN(4); _etext = .; + .got.plt : { *(.got.plt) } _got_start = .; .got : { *(.got) } _got_end = .; - .got.plt : { *(.got.plt) } + + /* ensure the zImage file size is always a multiple of 64 bits */ + /* (without a dummy byte, ld just ignores the empty section) */ + .pad : { BYTE(0); . = ALIGN(8); } _edata = .; . = BSS_START; |