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Subject[2.6 patch] cleanup asm/setup.h userspace visibility (v3)
On Sun, Dec 03, 2006 at 11:56:40AM +0100, Geert Uytterhoeven wrote:
> On Sat, 2 Dec 2006, Russell King wrote:
> > On Sat, Dec 02, 2006 at 06:55:39PM +0100, Adrian Bunk wrote:
> > > This patch makes the contents of the userspace asm/setup.h header
> > > consistent on all architectures:
> > > - export setup.h to userspace on all architectures
> > > - export only COMMAND_LINE_SIZE to userspace
> >
> > On ARM, all the ATAGs are exported to userspace because they are an API
> > for boot loaders to use. Everything down to the comment "Memory map
> > description" should be exported.
>
> Same for m68k: at least MACH_*, CPU*, MMU*, and FPU* are needed to compile
> m68kboot.

Updated patch below.

> Gr{oetje,eeting}s,
>
> Geert

cu
Adrian


<-- snip -->


This patch makes the contents of the userspace asm/setup.h header
consistent on all architectures:
- export setup.h to userspace on all architectures
- export only COMMAND_LINE_SIZE to userspace,
exceptions where architecture specific things are additionally exported:
- arm
- m68k
- frv: move COMMAND_LINE_SIZE from param.h
- i386: remove duplicate COMMAND_LINE_SIZE from param.h
- arm:
- export ATAGs to userspace
- change u8/u16/u32 to __u8/__u16/__u32

Signed-off-by: Adrian Bunk <bunk@stusta.de>
Acked-by: Russell King <rmk+lkml@arm.linux.org.uk>

---
include/asm-arm/setup.h | 104 +++++++++++++++++----------------
include/asm-arm26/setup.h | 4 +
include/asm-avr32/setup.h | 5 +
include/asm-frv/param.h | 1
include/asm-frv/setup.h | 6 +
include/asm-generic/Kbuild.asm | 1
include/asm-i386/Kbuild | 1
include/asm-i386/param.h | 1
include/asm-i386/setup.h | 6 +
include/asm-ia64/Kbuild | 1
include/asm-m32r/setup.h | 9 ++
include/asm-m68k/setup.h | 6 +
include/asm-m68knommu/setup.h | 5 +
include/asm-mips/setup.h | 2
include/asm-powerpc/setup.h | 3
include/asm-s390/setup.h | 3
include/asm-sh/setup.h | 6 +
include/asm-sh64/setup.h | 6 +
include/asm-x86_64/Kbuild | 1
19 files changed, 102 insertions(+), 69 deletions(-)
--- linux-2.6.19-rc6-mm2/include/asm-generic/Kbuild.asm.old 2006-12-02 13:22:46.000000000 +0100
+++ linux-2.6.19-rc6-mm2/include/asm-generic/Kbuild.asm 2006-12-02 13:31:35.000000000 +0100
@@ -14,6 +14,7 @@
unifdef-y += ptrace.h
unifdef-y += resource.h
unifdef-y += sembuf.h
+unifdef-y += setup.h
unifdef-y += shmbuf.h
unifdef-y += sigcontext.h
unifdef-y += siginfo.h
--- linux-2.6.19-rc6-mm2/include/asm-i386/Kbuild.old 2006-12-02 13:23:11.000000000 +0100
+++ linux-2.6.19-rc6-mm2/include/asm-i386/Kbuild 2006-12-02 13:31:35.000000000 +0100
@@ -7,5 +7,4 @@
header-y += ucontext.h

unifdef-y += mtrr.h
-unifdef-y += setup.h
unifdef-y += vm86.h
--- linux-2.6.19-rc6-mm2/include/asm-ia64/Kbuild.old 2006-12-02 13:23:23.000000000 +0100
+++ linux-2.6.19-rc6-mm2/include/asm-ia64/Kbuild 2006-12-02 13:31:35.000000000 +0100
@@ -10,7 +10,6 @@
header-y += perfmon_default_smpl.h
header-y += ptrace_offsets.h
header-y += rse.h
-header-y += setup.h
header-y += ucontext.h

unifdef-y += perfmon.h
--- linux-2.6.19-rc6-mm2/include/asm-x86_64/Kbuild.old 2006-12-02 13:23:35.000000000 +0100
+++ linux-2.6.19-rc6-mm2/include/asm-x86_64/Kbuild 2006-12-02 13:31:35.000000000 +0100
@@ -11,7 +11,6 @@
header-y += msr.h
header-y += prctl.h
header-y += ptrace-abi.h
-header-y += setup.h
header-y += sigcontext32.h
header-y += ucontext.h
header-y += vsyscall32.h
--- linux-2.6.19-rc6-mm2/include/asm-arm/setup.h.old 2006-12-02 13:30:16.000000000 +0100
+++ linux-2.6.19-rc6-mm2/include/asm-arm/setup.h 2006-12-02 19:21:54.000000000 +0100
@@ -14,55 +14,57 @@
#ifndef __ASMARM_SETUP_H
#define __ASMARM_SETUP_H

+#include <asm/types.h>
+
#define COMMAND_LINE_SIZE 1024

/* The list ends with an ATAG_NONE node. */
#define ATAG_NONE 0x00000000

struct tag_header {
- u32 size;
- u32 tag;
+ __u32 size;
+ __u32 tag;
};

/* The list must start with an ATAG_CORE node */
#define ATAG_CORE 0x54410001

struct tag_core {
- u32 flags; /* bit 0 = read-only */
- u32 pagesize;
- u32 rootdev;
+ __u32 flags; /* bit 0 = read-only */
+ __u32 pagesize;
+ __u32 rootdev;
};

/* it is allowed to have multiple ATAG_MEM nodes */
#define ATAG_MEM 0x54410002

struct tag_mem32 {
- u32 size;
- u32 start; /* physical start address */
+ __u32 size;
+ __u32 start; /* physical start address */
};

/* VGA text type displays */
#define ATAG_VIDEOTEXT 0x54410003

struct tag_videotext {
- u8 x;
- u8 y;
- u16 video_page;
- u8 video_mode;
- u8 video_cols;
- u16 video_ega_bx;
- u8 video_lines;
- u8 video_isvga;
- u16 video_points;
+ __u8 x;
+ __u8 y;
+ __u16 video_page;
+ __u8 video_mode;
+ __u8 video_cols;
+ __u16 video_ega_bx;
+ __u8 video_lines;
+ __u8 video_isvga;
+ __u16 video_points;
};

/* describes how the ramdisk will be used in kernel */
#define ATAG_RAMDISK 0x54410004

struct tag_ramdisk {
- u32 flags; /* bit 0 = load, bit 1 = prompt */
- u32 size; /* decompressed ramdisk size in _kilo_ bytes */
- u32 start; /* starting block of floppy-based RAM disk image */
+ __u32 flags; /* bit 0 = load, bit 1 = prompt */
+ __u32 size; /* decompressed ramdisk size in _kilo_ bytes */
+ __u32 start; /* starting block of floppy-based RAM disk image */
};

/* describes where the compressed ramdisk image lives (virtual address) */
@@ -76,23 +78,23 @@
#define ATAG_INITRD2 0x54420005

struct tag_initrd {
- u32 start; /* physical start address */
- u32 size; /* size of compressed ramdisk image in bytes */
+ __u32 start; /* physical start address */
+ __u32 size; /* size of compressed ramdisk image in bytes */
};

/* board serial number. "64 bits should be enough for everybody" */
#define ATAG_SERIAL 0x54410006

struct tag_serialnr {
- u32 low;
- u32 high;
+ __u32 low;
+ __u32 high;
};

/* board revision */
#define ATAG_REVISION 0x54410007

struct tag_revision {
- u32 rev;
+ __u32 rev;
};

/* initial values for vesafb-type framebuffers. see struct screen_info
@@ -101,20 +103,20 @@
#define ATAG_VIDEOLFB 0x54410008

struct tag_videolfb {
- u16 lfb_width;
- u16 lfb_height;
- u16 lfb_depth;
- u16 lfb_linelength;
- u32 lfb_base;
- u32 lfb_size;
- u8 red_size;
- u8 red_pos;
- u8 green_size;
- u8 green_pos;
- u8 blue_size;
- u8 blue_pos;
- u8 rsvd_size;
- u8 rsvd_pos;
+ __u16 lfb_width;
+ __u16 lfb_height;
+ __u16 lfb_depth;
+ __u16 lfb_linelength;
+ __u32 lfb_base;
+ __u32 lfb_size;
+ __u8 red_size;
+ __u8 red_pos;
+ __u8 green_size;
+ __u8 green_pos;
+ __u8 blue_size;
+ __u8 blue_pos;
+ __u8 rsvd_size;
+ __u8 rsvd_pos;
};

/* command line: \0 terminated string */
@@ -128,17 +130,17 @@
#define ATAG_ACORN 0x41000101

struct tag_acorn {
- u32 memc_control_reg;
- u32 vram_pages;
- u8 sounddefault;
- u8 adfsdrives;
+ __u32 memc_control_reg;
+ __u32 vram_pages;
+ __u8 sounddefault;
+ __u8 adfsdrives;
};

/* footbridge memory clock, see arch/arm/mach-footbridge/arch.c */
#define ATAG_MEMCLK 0x41000402

struct tag_memclk {
- u32 fmemclk;
+ __u32 fmemclk;
};

struct tag {
@@ -167,24 +169,26 @@
};

struct tagtable {
- u32 tag;
+ __u32 tag;
int (*parse)(const struct tag *);
};

-#define __tag __attribute_used__ __attribute__((__section__(".taglist.init")))
-#define __tagtable(tag, fn) \
-static struct tagtable __tagtable_##fn __tag = { tag, fn }
-
#define tag_member_present(tag,member) \
((unsigned long)(&((struct tag *)0L)->member + 1) \
<= (tag)->hdr.size * 4)

-#define tag_next(t) ((struct tag *)((u32 *)(t) + (t)->hdr.size))
+#define tag_next(t) ((struct tag *)((__u32 *)(t) + (t)->hdr.size))
#define tag_size(type) ((sizeof(struct tag_header) + sizeof(struct type)) >> 2)

#define for_each_tag(t,base) \
for (t = base; t->hdr.size; t = tag_next(t))

+#ifdef __KERNEL__
+
+#define __tag __attribute_used__ __attribute__((__section__(".taglist.init")))
+#define __tagtable(tag, fn) \
+static struct tagtable __tagtable_##fn __tag = { tag, fn }
+
/*
* Memory map description
*/
@@ -217,4 +221,6 @@
static struct early_params __early_##fn __attribute_used__ \
__attribute__((__section__(".early_param.init"))) = { name, fn }

+#endif /* __KERNEL__ */
+
#endif
--- linux-2.6.19-rc6-mm2/include/asm-arm26/setup.h.old 2006-12-02 13:30:16.000000000 +0100
+++ linux-2.6.19-rc6-mm2/include/asm-arm26/setup.h 2006-12-02 13:31:35.000000000 +0100
@@ -16,6 +16,8 @@

#define COMMAND_LINE_SIZE 1024

+#ifdef __KERNEL__
+
/* The list ends with an ATAG_NONE node. */
#define ATAG_NONE 0x00000000

@@ -202,4 +204,6 @@

extern struct meminfo meminfo;

+#endif /* __KERNEL__ */
+
#endif
--- linux-2.6.19-rc6-mm2/include/asm-frv/param.h.old 2006-12-02 13:30:16.000000000 +0100
+++ linux-2.6.19-rc6-mm2/include/asm-frv/param.h 2006-12-02 13:31:35.000000000 +0100
@@ -18,6 +18,5 @@
#endif

#define MAXHOSTNAMELEN 64 /* max length of hostname */
-#define COMMAND_LINE_SIZE 512

#endif /* _ASM_PARAM_H */
--- linux-2.6.19-rc6-mm2/include/asm-frv/setup.h.old 2006-12-02 13:30:16.000000000 +0100
+++ linux-2.6.19-rc6-mm2/include/asm-frv/setup.h 2006-12-02 13:31:35.000000000 +0100
@@ -12,6 +12,10 @@
#ifndef _ASM_SETUP_H
#define _ASM_SETUP_H

+#define COMMAND_LINE_SIZE 512
+
+#ifdef __KERNEL__
+
#include <linux/init.h>

#ifndef __ASSEMBLY__
@@ -22,4 +26,6 @@

#endif /* !__ASSEMBLY__ */

+#endif /* __KERNEL__ */
+
#endif /* _ASM_SETUP_H */
--- linux-2.6.19-rc6-mm2/include/asm-i386/param.h.old 2006-12-02 13:30:16.000000000 +0100
+++ linux-2.6.19-rc6-mm2/include/asm-i386/param.h 2006-12-02 13:31:35.000000000 +0100
@@ -18,6 +18,5 @@
#endif

#define MAXHOSTNAMELEN 64 /* max length of hostname */
-#define COMMAND_LINE_SIZE 256

#endif
--- linux-2.6.19-rc6-mm2/include/asm-i386/setup.h.old 2006-12-02 13:30:16.000000000 +0100
+++ linux-2.6.19-rc6-mm2/include/asm-i386/setup.h 2006-12-02 13:43:43.000000000 +0100
@@ -6,6 +6,8 @@
#ifndef _i386_SETUP_H
#define _i386_SETUP_H

+#define COMMAND_LINE_SIZE 256
+
#ifdef __KERNEL__
#include <linux/pfn.h>

@@ -14,10 +16,8 @@
*/
#define MAXMEM_PFN PFN_DOWN(MAXMEM)
#define MAX_NONPAE_PFN (1 << 20)
-#endif

#define PARAM_SIZE 4096
-#define COMMAND_LINE_SIZE 256

#define OLD_CL_MAGIC_ADDR 0x90020
#define OLD_CL_MAGIC 0xA33F
@@ -79,4 +79,6 @@

#endif /* __ASSEMBLY__ */

+#endif /* __KERNEL__ */
+
#endif /* _i386_SETUP_H */
--- linux-2.6.19-rc6-mm2/include/asm-m32r/setup.h.old 2006-12-02 13:30:16.000000000 +0100
+++ linux-2.6.19-rc6-mm2/include/asm-m32r/setup.h 2006-12-02 13:38:45.000000000 +0100
@@ -1,6 +1,11 @@
/*
* This is set up by the setup-routine at boot-time
*/
+
+#define COMMAND_LINE_SIZE 512
+
+#ifdef __KERNEL__
+
#define PARAM ((unsigned char *)empty_zero_page)

#define MOUNT_ROOT_RDONLY (*(unsigned long *) (PARAM+0x000))
@@ -18,8 +23,6 @@

#define SCREEN_INFO (*(struct screen_info *) (PARAM+0x200))

-#define COMMAND_LINE_SIZE (512)
-
#define RAMDISK_IMAGE_START_MASK (0x07FF)
#define RAMDISK_PROMPT_FLAG (0x8000)
#define RAMDISK_LOAD_FLAG (0x4000)
@@ -27,3 +30,5 @@
extern unsigned long memory_start;
extern unsigned long memory_end;

+#endif /* __KERNEL__ */
+
--- linux-2.6.19-rc6-mm2/include/asm-m68k/setup.h.old 2006-12-02 13:30:16.000000000 +0100
+++ linux-2.6.19-rc6-mm2/include/asm-m68k/setup.h 2006-12-02 13:31:35.000000000 +0100
@@ -41,8 +45,12 @@
#define MACH_Q40 10
#define MACH_SUN3X 11

+#define COMMAND_LINE_SIZE 256
+
#ifdef __KERNEL__
+
+#define CL_SIZE COMMAND_LINE_SIZE

#ifndef __ASSEMBLY__
extern unsigned long m68k_machtype;
#endif /* !__ASSEMBLY__ */
@@ -355,8 +353,6 @@
*/

#define NUM_MEMINFO 4
-#define CL_SIZE 256
-#define COMMAND_LINE_SIZE CL_SIZE

#ifndef __ASSEMBLY__
struct mem_info {
--- linux-2.6.19-rc6-mm2/include/asm-m68knommu/setup.h.old 2006-12-02 13:30:16.000000000 +0100
+++ linux-2.6.19-rc6-mm2/include/asm-m68knommu/setup.h 2006-12-02 13:31:35.000000000 +0100
@@ -1,5 +1,10 @@
+#ifdef __KERNEL__
+
#include <asm-m68k/setup.h>

/* We have a bigger command line buffer. */
#undef COMMAND_LINE_SIZE
+
+#endif /* __KERNEL__ */
+
#define COMMAND_LINE_SIZE 512
--- linux-2.6.19-rc6-mm2/include/asm-mips/setup.h.old 2006-12-02 13:30:16.000000000 +0100
+++ linux-2.6.19-rc6-mm2/include/asm-mips/setup.h 2006-12-02 13:31:35.000000000 +0100
@@ -1,8 +1,6 @@
-#ifdef __KERNEL__
#ifndef _MIPS_SETUP_H
#define _MIPS_SETUP_H

#define COMMAND_LINE_SIZE 256

#endif /* __SETUP_H */
-#endif /* __KERNEL__ */
--- linux-2.6.19-rc6-mm2/include/asm-powerpc/setup.h.old 2006-12-02 13:30:16.000000000 +0100
+++ linux-2.6.19-rc6-mm2/include/asm-powerpc/setup.h 2006-12-02 13:31:35.000000000 +0100
@@ -1,9 +1,6 @@
#ifndef _ASM_POWERPC_SETUP_H
#define _ASM_POWERPC_SETUP_H

-#ifdef __KERNEL__
-
#define COMMAND_LINE_SIZE 512

-#endif /* __KERNEL__ */
#endif /* _ASM_POWERPC_SETUP_H */
--- linux-2.6.19-rc6-mm2/include/asm-s390/setup.h.old 2006-12-02 13:30:16.000000000 +0100
+++ linux-2.6.19-rc6-mm2/include/asm-s390/setup.h 2006-12-02 13:35:07.000000000 +0100
@@ -8,12 +8,13 @@
#ifndef _ASM_S390_SETUP_H
#define _ASM_S390_SETUP_H

+#define COMMAND_LINE_SIZE 896
+
#ifdef __KERNEL__

#include <asm/types.h>

#define PARMAREA 0x10400
-#define COMMAND_LINE_SIZE 896
#define MEMORY_CHUNKS 16 /* max 0x7fff */
#define IPL_PARMBLOCK_ORIGIN 0x2000

--- linux-2.6.19-rc6-mm2/include/asm-sh/setup.h.old 2006-12-02 13:30:16.000000000 +0100
+++ linux-2.6.19-rc6-mm2/include/asm-sh/setup.h 2006-12-02 13:35:50.000000000 +0100
@@ -1,10 +1,12 @@
-#ifdef __KERNEL__
#ifndef _SH_SETUP_H
#define _SH_SETUP_H

#define COMMAND_LINE_SIZE 256

+#ifdef __KERNEL__
+
int setup_early_printk(char *);

-#endif /* _SH_SETUP_H */
#endif /* __KERNEL__ */
+
+#endif /* _SH_SETUP_H */
--- linux-2.6.19-rc6-mm2/include/asm-sh64/setup.h.old 2006-12-02 13:30:16.000000000 +0100
+++ linux-2.6.19-rc6-mm2/include/asm-sh64/setup.h 2006-12-02 13:31:35.000000000 +0100
@@ -1,6 +1,10 @@
#ifndef __ASM_SH64_SETUP_H
#define __ASM_SH64_SETUP_H

+#define COMMAND_LINE_SIZE 256
+
+#ifdef __KERNEL__
+
#define PARAM ((unsigned char *)empty_zero_page)
#define MOUNT_ROOT_RDONLY (*(unsigned long *) (PARAM+0x000))
#define RAMDISK_FLAGS (*(unsigned long *) (PARAM+0x004))
@@ -12,5 +16,7 @@
#define COMMAND_LINE ((char *) (PARAM+256))
#define COMMAND_LINE_SIZE 256

+#endif /* __KERNEL__ */
+
#endif /* __ASM_SH64_SETUP_H */

--- linux-2.6.19-rc6-mm2/include/asm-avr32/setup.h.old 2006-12-02 13:33:07.000000000 +0100
+++ linux-2.6.19-rc6-mm2/include/asm-avr32/setup.h 2006-12-02 13:33:33.000000000 +0100
@@ -13,6 +13,8 @@

#define COMMAND_LINE_SIZE 256

+#ifdef __KERNEL__
+
/* Magic number indicating that a tag table is present */
#define ATAG_MAGIC 0xa2a25441

@@ -138,4 +140,6 @@

#endif /* !__ASSEMBLY__ */

+#endif /* __KERNEL__ */
+
#endif /* __ASM_AVR32_SETUP_H__ */

-
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