10 files changed, 152 insertions, 79 deletions
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 738f404d5e34..4e829c604f93 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -1404,6 +1404,12 @@ config CC_STACKPROTECTOR
          neutralized via a kernel panic.
          This feature requires gcc version 4.2 or above.
+config DEPRECATED_PARAM_STRUCT
+        bool "Provide old way to pass kernel parameters"
+        help
+          This was deprecated in 2001 and announced to live on for 5 years.
+          Some old boot loaders still use this way.
 endmenu
 menu "Boot options"
@@ -1514,6 +1520,105 @@ config ATAGS_PROC
          Should the atags used to boot the kernel be exported in an "atags"
          file in procfs. Useful with kexec.
+config AUTO_ZRELADDR
+        bool "Auto calculation of the decompressed kernel image address"
+        depends on !ZBOOT_ROM && !ARCH_U300
+        help
+          ZRELADDR is the physical address where the decompressed kernel
+          image will be placed. If AUTO_ZRELADDR is selected, the address
+          will be determined at run-time by masking the current IP with
+          0xf8000000. This assumes the zImage being placed in the first 128MB
+          from start of memory.
+config ZRELADDR
+        hex "Physical address of the decompressed kernel image"
+        depends on !AUTO_ZRELADDR
+        default 0x00008000 if ARCH_BCMRING ||\
+                ARCH_CNS3XXX ||\
+                ARCH_DOVE ||\
+                ARCH_EBSA110 ||\
+                ARCH_FOOTBRIDGE ||\
+                ARCH_INTEGRATOR ||\
+                ARCH_IOP13XX ||\
+                ARCH_IOP33X ||\
+                ARCH_IXP2000 ||\
+                ARCH_IXP23XX ||\
+                ARCH_IXP4XX ||\
+                ARCH_KIRKWOOD ||\
+                ARCH_KS8695 ||\
+                ARCH_LOKI ||\
+                ARCH_MMP ||\
+                ARCH_MV78XX0 ||\
+                ARCH_NOMADIK ||\
+                ARCH_NUC93X ||\
+                ARCH_NS9XXX ||\
+                ARCH_ORION5X ||\
+                ARCH_SPEAR3XX ||\
+                ARCH_SPEAR6XX ||\
+                ARCH_U8500 ||\
+                ARCH_VERSATILE ||\
+                ARCH_W90X900
+        default 0x08008000 if ARCH_MX1 ||\
+                ARCH_SHARK
+        default 0x10008000 if ARCH_MSM ||\
+                ARCH_OMAP1 ||\
+                ARCH_RPC
+        default 0x20008000 if ARCH_S5P6440 ||\
+                ARCH_S5P6442 ||\
+                ARCH_S5PC100 ||\
+                ARCH_S5PV210
+        default 0x30008000 if ARCH_S3C2410 ||\
+                ARCH_S3C2400 ||\
+                ARCH_S3C2412 ||\
+                ARCH_S3C2416 ||\
+                ARCH_S3C2440 ||\
+                ARCH_S3C2443
+        default 0x40008000 if ARCH_STMP378X ||\
+                ARCH_STMP37XX ||\
+                ARCH_SH7372 ||\
+                ARCH_SH7377
+        default 0x50008000 if ARCH_S3C64XX ||\
+                ARCH_SH7367
+        default 0x60008000 if ARCH_VEXPRESS
+        default 0x80008000 if ARCH_MX25 ||\
+                ARCH_MX3 ||\
+                ARCH_NETX ||\
+                ARCH_OMAP2PLUS ||\
+                ARCH_PNX4008
+        default 0x90008000 if ARCH_MX5 ||\
+                ARCH_MX91231
+        default 0xa0008000 if ARCH_IOP32X ||\
+                ARCH_PXA ||\
+                MACH_MX27
+        default 0xc0008000 if ARCH_LH7A40X ||\
+                MACH_MX21
+        default 0xf0008000 if ARCH_AAEC2000 ||\
+                ARCH_L7200
+        default 0xc0028000 if ARCH_CLPS711X
+        default 0x70008000 if ARCH_AT91 && (ARCH_AT91CAP9 || ARCH_AT91SAM9G45)
+        default 0x20008000 if ARCH_AT91 && !(ARCH_AT91CAP9 || ARCH_AT91SAM9G45)
+        default 0xc0008000 if ARCH_DAVINCI && ARCH_DAVINCI_DA8XX
+        default 0x80008000 if ARCH_DAVINCI && !ARCH_DAVINCI_DA8XX
+        default 0x00008000 if ARCH_EP93XX && EP93XX_SDCE3_SYNC_PHYS_OFFSET
+        default 0xc0008000 if ARCH_EP93XX && EP93XX_SDCE0_PHYS_OFFSET
+        default 0xd0008000 if ARCH_EP93XX && EP93XX_SDCE1_PHYS_OFFSET
+        default 0xe0008000 if ARCH_EP93XX && EP93XX_SDCE2_PHYS_OFFSET
+        default 0xf0008000 if ARCH_EP93XX && EP93XX_SDCE3_ASYNC_PHYS_OFFSET
+        default 0x00008000 if ARCH_GEMINI && GEMINI_MEM_SWAP
+        default 0x10008000 if ARCH_GEMINI && !GEMINI_MEM_SWAP
+        default 0x70008000 if ARCH_REALVIEW && REALVIEW_HIGH_PHYS_OFFSET
+        default 0x00008000 if ARCH_REALVIEW && !REALVIEW_HIGH_PHYS_OFFSET
+        default 0xc0208000 if ARCH_SA1100 && SA1111
+        default 0xc0008000 if ARCH_SA1100 && !SA1111
+        default 0x30108000 if ARCH_S3C2410 && PM_H1940
+        default 0x28E08000 if ARCH_U300 && MACH_U300_SINGLE_RAM
+        default 0x48008000 if ARCH_U300 && !MACH_U300_SINGLE_RAM
+        help
+          ZRELADDR is the physical address where the decompressed kernel
+          image will be placed. ZRELADDR has to be specified when the
+          assumption of AUTO_ZRELADDR is not valid, or when ZBOOT_ROM is
+          selected.
 endmenu
 menu "CPU Power Management"
diff --git a/arch/arm/boot/Makefile b/arch/arm/boot/Makefile
index 4a590f4113e2..f705213caa88 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 ($(CONFIG_THUMB2_KERNEL),y)
diff --git a/arch/arm/boot/compressed/Makefile b/arch/arm/boot/compressed/Makefile
index 53faa9063a03..cc8380b879fe 100644
--- a/arch/arm/boot/compressed/Makefile
+++ b/arch/arm/boot/compressed/Makefile
@@ -4,6 +4,7 @@
 # create a compressed vmlinuz image from the original vmlinux
 #
+AFLAGS_head.o += -DTEXT_OFFSET=$(TEXT_OFFSET)
 HEAD    = head.o
 OBJS    = misc.o decompress.o
 FONTC   = $(srctree)/drivers/video/console/font_acorn_8x8.c
@@ -79,19 +80,9 @@ endif
 EXTRA_CFLAGS  := -fpic -fno-builtin
 EXTRA_AFLAGS  := -Wa,-march=all
-# Supply ZRELADDR, INITRD_PHYS and PARAMS_PHYS to the decompressor via
-# linker symbols.  We only define initrd_phys and params_phys if the
-# machine class defined the corresponding makefile variable.
-LDFLAGS_vmlinux := --defsym zreladdr=$(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 491a037b2973..000000000000
--- 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 c5191b1532e8..abf4d65acf62 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})
+ ARM(           ldmia   r0, {r1, r2, r3, r5, r6, r11, ip, sp})
- THUMB(         ldmia   r0, {r1, r2, r3, r4, r5, r6, r11, ip}   )
+ 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
+ * On exit,
- * This routine must preserve: r4, r6, r7
+ *  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 d2b2ef41cd4f..e653a6d3c8d9 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
diff --git a/arch/arm/kernel/Makefile b/arch/arm/kernel/Makefile
index 26d302c28e13..021f72d89799 100644
--- a/arch/arm/kernel/Makefile
+++ b/arch/arm/kernel/Makefile
@@ -13,10 +13,12 @@ CFLAGS_REMOVE_return_address.o = -pg
 # Object file lists.
-obj-y           := compat.o elf.o entry-armv.o entry-common.o irq.o \
+obj-y           := elf.o entry-armv.o entry-common.o irq.o \
                   process.o ptrace.o return_address.o setup.o signal.o \
                   sys_arm.o stacktrace.o time.o traps.o
+obj-$(CONFIG_DEPRECATED_PARAM_STRUCT) += compat.o
 obj-$(CONFIG_LEDS)              += leds.o
 obj-$(CONFIG_OC_ETM)            += etm.o
diff --git a/arch/arm/kernel/compat.c b/arch/arm/kernel/compat.c
index 0a1385442f43..925652318b8b 100644
--- a/arch/arm/kernel/compat.c
+++ b/arch/arm/kernel/compat.c
@@ -217,10 +217,3 @@ void __init convert_to_tag_list(struct tag *tags)
        struct param_struct *params = (struct param_struct *)tags;
        build_tag_list(params, &params->u2);
 }
-void __init squash_mem_tags(struct tag *tag)
-{
-        for (; tag->hdr.size; tag = tag_next(tag))
-                if (tag->hdr.tag == ATAG_MEM)
-                        tag->hdr.tag = ATAG_NONE;
-}
diff --git a/arch/arm/kernel/compat.h b/arch/arm/kernel/compat.h
index 27e61a68bd1c..39264ab1b9c6 100644
--- a/arch/arm/kernel/compat.h
+++ b/arch/arm/kernel/compat.h
@@ -9,5 +9,3 @@
 */
 extern void convert_to_tag_list(struct tag *tags);
-extern void squash_mem_tags(struct tag *tag);
diff --git a/arch/arm/kernel/setup.c b/arch/arm/kernel/setup.c
index 122d999bdc7c..cbc6ddb1c9bd 100644
--- a/arch/arm/kernel/setup.c
+++ b/arch/arm/kernel/setup.c
@@ -44,7 +44,9 @@
 #include <asm/traps.h>
 #include <asm/unwind.h>
+#if defined(CONFIG_DEPRECATED_PARAM_STRUCT)
 #include "compat.h"
+#endif
 #include "atags.h"
 #include "tcm.h"
@@ -663,6 +665,13 @@ static int __init customize_machine(void)
 }
 arch_initcall(customize_machine);
+static void __init squash_mem_tags(struct tag *tag)
+{
+        for (; tag->hdr.size; tag = tag_next(tag))
+                if (tag->hdr.tag == ATAG_MEM)
+                        tag->hdr.tag = ATAG_NONE;
+}
 void __init setup_arch(char **cmdline_p)
 {
        struct tag *tags = (struct tag *)&init_tags;
@@ -683,12 +692,14 @@ void __init setup_arch(char **cmdline_p)
        else if (mdesc->boot_params)
                tags = phys_to_virt(mdesc->boot_params);
+#if defined(CONFIG_DEPRECATED_PARAM_STRUCT)
        /*
         * If we have the old style parameters, convert them to
         * a tag list.
         */
        if (tags->hdr.tag != ATAG_CORE)
                convert_to_tag_list(tags);
+#endif
        if (tags->hdr.tag != ATAG_CORE)
                tags = (struct tag *)&init_tags;