diff options
Diffstat (limited to 'arch/arm/boot')
| -rw-r--r-- | arch/arm/boot/Makefile | 8 | ||||
| -rw-r--r-- | arch/arm/boot/compressed/Makefile | 11 | ||||
| -rw-r--r-- | arch/arm/boot/compressed/Makefile.debug | 23 | ||||
| -rw-r--r-- | arch/arm/boot/compressed/head.S | 40 | ||||
| -rw-r--r-- | arch/arm/boot/compressed/misc.c | 20 |
5 files changed, 33 insertions, 69 deletions
diff --git a/arch/arm/boot/Makefile b/arch/arm/boot/Makefile index 4a590f4113e..f705213caa8 100644 --- a/arch/arm/boot/Makefile +++ b/arch/arm/boot/Makefile @@ -14,18 +14,16 @@ MKIMAGE := $(srctree)/scripts/mkuboot.sh ifneq ($(MACHINE),) -include $(srctree)/$(MACHINE)/Makefile.boot +-include $(srctree)/$(MACHINE)/Makefile.boot endif # Note: the following conditions must always be true: -# ZRELADDR == virt_to_phys(PAGE_OFFSET + TEXT_OFFSET) # PARAMS_PHYS must be within 4MB of ZRELADDR # INITRD_PHYS must be in RAM -ZRELADDR := $(zreladdr-y) PARAMS_PHYS := $(params_phys-y) INITRD_PHYS := $(initrd_phys-y) -export ZRELADDR INITRD_PHYS PARAMS_PHYS +export INITRD_PHYS PARAMS_PHYS targets := Image zImage xipImage bootpImage uImage @@ -67,7 +65,7 @@ quiet_cmd_uimage = UIMAGE $@ ifeq ($(CONFIG_ZBOOT_ROM),y) $(obj)/uImage: LOADADDR=$(CONFIG_ZBOOT_ROM_TEXT) else -$(obj)/uImage: LOADADDR=$(ZRELADDR) +$(obj)/uImage: LOADADDR=$(CONFIG_ZRELADDR) endif ifeq ($(CONFIG_THUMB2_KERNEL),y) diff --git a/arch/arm/boot/compressed/Makefile b/arch/arm/boot/compressed/Makefile index 7a29301d516..c2225fea353 100644 --- a/arch/arm/boot/compressed/Makefile +++ b/arch/arm/boot/compressed/Makefile @@ -4,6 +4,7 @@ # create a compressed vmlinuz image from the original vmlinux # +AFLAGS_head.o += -DTEXT_OFFSET=$(TEXT_OFFSET) HEAD = head.o OBJS = misc.o decompress.o FONTC = $(srctree)/drivers/video/console/font_acorn_8x8.c @@ -75,19 +76,9 @@ endif EXTRA_CFLAGS := -fpic -fno-builtin EXTRA_AFLAGS := -Wa,-march=all -# Supply ZRELADDR, INITRD_PHYS and PARAMS_PHYS to the decompressor via -# linker symbols. We only define initrd_phys and params_phys if the -# machine class defined the corresponding makefile variable. -LDFLAGS_vmlinux := --defsym zreladdr=$(ZRELADDR) ifeq ($(CONFIG_CPU_ENDIAN_BE8),y) LDFLAGS_vmlinux += --be8 endif -ifneq ($(INITRD_PHYS),) -LDFLAGS_vmlinux += --defsym initrd_phys=$(INITRD_PHYS) -endif -ifneq ($(PARAMS_PHYS),) -LDFLAGS_vmlinux += --defsym params_phys=$(PARAMS_PHYS) -endif # ? LDFLAGS_vmlinux += -p # Report unresolved symbol references diff --git a/arch/arm/boot/compressed/Makefile.debug b/arch/arm/boot/compressed/Makefile.debug deleted file mode 100644 index 491a037b297..00000000000 --- a/arch/arm/boot/compressed/Makefile.debug +++ /dev/null @@ -1,23 +0,0 @@ -# -# linux/arch/arm/boot/compressed/Makefile -# -# create a compressed vmlinux image from the original vmlinux -# - -COMPRESSED_EXTRA=../../lib/ll_char_wr.o -OBJECTS=misc-debug.o ll_char_wr.aout.o - -CFLAGS=-D__KERNEL__ -O2 -DSTDC_HEADERS -DSTANDALONE_DEBUG -Wall -I../../../../include -c - -test-gzip: piggy.aout.o $(OBJECTS) - $(CC) -o $@ $(OBJECTS) piggy.aout.o - -misc-debug.o: misc.c - $(CC) $(CFLAGS) -o $@ misc.c - -piggy.aout.o: piggy.o - arm-linuxelf-objcopy --change-leading-char -I elf32-arm -O arm-aout32-linux piggy.o piggy.aout.o - -ll_char_wr.aout.o: $(COMPRESSED_EXTRA) - arm-linuxelf-objcopy --change-leading-char -I elf32-arm -O arm-aout32-linux $(COMPRESSED_EXTRA) ll_char_wr.aout.o - diff --git a/arch/arm/boot/compressed/head.S b/arch/arm/boot/compressed/head.S index c5191b1532e..abf4d65acf6 100644 --- a/arch/arm/boot/compressed/head.S +++ b/arch/arm/boot/compressed/head.S @@ -170,9 +170,16 @@ not_angel: .text adr r0, LC0 - ARM( ldmia r0, {r1, r2, r3, r4, r5, r6, r11, ip, sp}) - THUMB( ldmia r0, {r1, r2, r3, r4, r5, r6, r11, ip} ) + ARM( ldmia r0, {r1, r2, r3, r5, r6, r11, ip, sp}) + THUMB( ldmia r0, {r1, r2, r3, r5, r6, r11, ip} ) THUMB( ldr sp, [r0, #32] ) +#ifdef CONFIG_AUTO_ZRELADDR + @ determine final kernel image address + and r4, pc, #0xf8000000 + add r4, r4, #TEXT_OFFSET +#else + ldr r4, =CONFIG_ZRELADDR +#endif subs r0, r0, r1 @ calculate the delta offset @ if delta is zero, we are @@ -310,18 +317,17 @@ wont_overwrite: mov r0, r4 LC0: .word LC0 @ r1 .word __bss_start @ r2 .word _end @ r3 - .word zreladdr @ r4 .word _start @ r5 .word _image_size @ r6 .word _got_start @ r11 .word _got_end @ ip - .word user_stack+4096 @ sp + .word user_stack_end @ sp LC1: .word reloc_end - reloc_start .size LC0, . - LC0 #ifdef CONFIG_ARCH_RPC .globl params -params: ldr r0, =params_phys +params: ldr r0, =0x10000100 @ params_phys for RPC mov pc, lr .ltorg .align @@ -339,9 +345,8 @@ params: ldr r0, =params_phys * r4 = kernel execution address * r7 = architecture number * r8 = atags pointer - * r9 = run-time address of "start" (???) * On exit, - * r1, r2, r3, r9, r10, r12 corrupted + * r0, r1, r2, r3, r9, r10, r12 corrupted * This routine must preserve: * r4, r5, r6, r7, r8 */ @@ -396,12 +401,18 @@ __armv3_mpu_cache_on: mov r0, #0 mcr p15, 0, r0, c7, c0, 0 @ invalidate whole cache v3 + /* + * ?? ARMv3 MMU does not allow reading the control register, + * does this really work on ARMv3 MPU? + */ mrc p15, 0, r0, c1, c0, 0 @ read control reg @ .... .... .... WC.M orr r0, r0, #0x000d @ .... .... .... 11.1 + /* ?? this overwrites the value constructed above? */ mov r0, #0 mcr p15, 0, r0, c1, c0, 0 @ write control reg + /* ?? invalidate for the second time? */ mcr p15, 0, r0, c7, c0, 0 @ invalidate whole cache v3 mov pc, lr @@ -771,8 +782,10 @@ proc_types: * Turn off the Cache and MMU. ARMv3 does not support * reading the control register, but ARMv4 does. * - * On exit, r0, r1, r2, r3, r9, r12 corrupted - * This routine must preserve: r4, r6, r7 + * On exit, + * r0, r1, r2, r3, r9, r12 corrupted + * This routine must preserve: + * r4, r6, r7 */ .align 5 cache_off: mov r3, #12 @ cache_off function @@ -845,7 +858,7 @@ __armv3_mmu_cache_off: * Clean and flush the cache to maintain consistency. * * On exit, - * r1, r2, r3, r9, r11, r12 corrupted + * r1, r2, r3, r9, r10, r11, r12 corrupted * This routine must preserve: * r0, r4, r5, r6, r7 */ @@ -988,7 +1001,7 @@ no_cache_id: __armv3_mmu_cache_flush: __armv3_mpu_cache_flush: mov r1, #0 - mcr p15, 0, r0, c7, c0, 0 @ invalidate whole cache v3 + mcr p15, 0, r1, c7, c0, 0 @ invalidate whole cache v3 mov pc, lr /* @@ -1001,6 +1014,7 @@ __armv3_mpu_cache_flush: phexbuf: .space 12 .size phexbuf, . - phexbuf +@ phex corrupts {r0, r1, r2, r3} phex: adr r3, phexbuf mov r2, #0 strb r2, [r3, r1] @@ -1015,6 +1029,7 @@ phex: adr r3, phexbuf strb r2, [r3, r1] b 1b +@ puts corrupts {r0, r1, r2, r3} puts: loadsp r3, r1 1: ldrb r2, [r0], #1 teq r2, #0 @@ -1029,12 +1044,14 @@ puts: loadsp r3, r1 teq r0, #0 bne 1b mov pc, lr +@ putc corrupts {r0, r1, r2, r3} putc: mov r2, r0 mov r0, #0 loadsp r3, r1 b 2b +@ memdump corrupts {r0, r1, r2, r3, r10, r11, r12, lr} memdump: mov r12, r0 mov r10, lr mov r11, #0 @@ -1070,3 +1087,4 @@ reloc_end: .align .section ".stack", "w" user_stack: .space 4096 +user_stack_end: diff --git a/arch/arm/boot/compressed/misc.c b/arch/arm/boot/compressed/misc.c index d2b2ef41cd4..e653a6d3c8d 100644 --- a/arch/arm/boot/compressed/misc.c +++ b/arch/arm/boot/compressed/misc.c @@ -28,9 +28,6 @@ unsigned int __machine_arch_type; #include <asm/unaligned.h> -#ifdef STANDALONE_DEBUG -#define putstr printf -#else static void putstr(const char *ptr); extern void error(char *x); @@ -116,7 +113,6 @@ static void putstr(const char *ptr) flush(); } -#endif void *memcpy(void *__dest, __const void *__src, size_t __n) { @@ -186,7 +182,6 @@ asmlinkage void __div0(void) extern void do_decompress(u8 *input, int len, u8 *output, void (*error)(char *x)); -#ifndef STANDALONE_DEBUG unsigned long decompress_kernel(unsigned long output_start, unsigned long free_mem_ptr_p, @@ -211,18 +206,3 @@ decompress_kernel(unsigned long output_start, unsigned long free_mem_ptr_p, putstr(" done, booting the kernel.\n"); return output_ptr; } -#else - -char output_buffer[1500*1024]; - -int main() -{ - output_data = output_buffer; - - putstr("Uncompressing Linux..."); - decompress(input_data, input_data_end - input_data, - NULL, NULL, output_data, NULL, error); - putstr("done.\n"); - return 0; -} -#endif |