Messages in this thread Patch in this message | | | From | "Eric W. Biederman" <> | Subject | [PATCH 4/33] i386: CONFIG_PHYSICAL_START cleanup | Date | Tue, 1 Aug 2006 05:03:19 -0600 |
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Defining __PHYSICAL_START and __KERNEL_START in asm-i386/page.h works but it triggers a full kernel rebuild for the silliest of reasons. This modifies the users to directly use CONFIG_PHYSICAL_START and linux/config.h which prevents the full rebuild problem, which makes the code much more maintainer and hopefully user friendly.
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> --- arch/i386/boot/compressed/head.S | 8 ++++---- arch/i386/boot/compressed/misc.c | 8 ++++---- arch/i386/kernel/vmlinux.lds.S | 3 ++- include/asm-i386/page.h | 3 --- 4 files changed, 10 insertions(+), 12 deletions(-)
diff --git a/arch/i386/boot/compressed/head.S b/arch/i386/boot/compressed/head.S index b5893e4..8f28ecd 100644 --- a/arch/i386/boot/compressed/head.S +++ b/arch/i386/boot/compressed/head.S @@ -23,9 +23,9 @@ */ .text +#include <linux/config.h> #include <linux/linkage.h> #include <asm/segment.h> -#include <asm/page.h> .globl startup_32 @@ -75,7 +75,7 @@ startup_32: popl %esi # discard address popl %esi # real mode pointer xorl %ebx,%ebx - ljmp $(__BOOT_CS), $__PHYSICAL_START + ljmp $(__BOOT_CS), $CONFIG_PHYSICAL_START /* * We come here, if we were loaded high. @@ -100,7 +100,7 @@ startup_32: popl %ecx # lcount popl %edx # high_buffer_start popl %eax # hcount - movl $__PHYSICAL_START,%edi + movl $CONFIG_PHYSICAL_START,%edi cli # make sure we don't get interrupted ljmp $(__BOOT_CS), $0x1000 # and jump to the move routine @@ -125,5 +125,5 @@ move_routine_start: movsl movl %ebx,%esi # Restore setup pointer xorl %ebx,%ebx - ljmp $(__BOOT_CS), $__PHYSICAL_START + ljmp $(__BOOT_CS), $CONFIG_PHYSICAL_START move_routine_end: diff --git a/arch/i386/boot/compressed/misc.c b/arch/i386/boot/compressed/misc.c index b2ccd54..905c37e 100644 --- a/arch/i386/boot/compressed/misc.c +++ b/arch/i386/boot/compressed/misc.c @@ -9,11 +9,11 @@ * High loaded stuff by Hans Lermen & Werner Almesberger, Feb. 1996 */ +#include <linux/config.h> #include <linux/linkage.h> #include <linux/vmalloc.h> #include <linux/screen_info.h> #include <asm/io.h> -#include <asm/page.h> /* * gzip declarations @@ -303,7 +303,7 @@ #ifdef STANDARD_MEMORY_BIOS_CALL #else if ((RM_ALT_MEM_K > RM_EXT_MEM_K ? RM_ALT_MEM_K : RM_EXT_MEM_K) < 1024) error("Less than 2MB of memory"); #endif - output_data = (unsigned char *)__PHYSICAL_START; /* Normally Points to 1M */ + output_data = (unsigned char *)CONFIG_PHYSICAL_START; /* Normally Points to 1M */ free_mem_end_ptr = (long)real_mode; } @@ -326,8 +326,8 @@ #endif low_buffer_size = low_buffer_end - LOW_BUFFER_START; high_loaded = 1; free_mem_end_ptr = (long)high_buffer_start; - if ( (__PHYSICAL_START + low_buffer_size) > ((ulg)high_buffer_start)) { - high_buffer_start = (uch *)(__PHYSICAL_START + low_buffer_size); + if ( (CONFIG_PHYSICAL_START + low_buffer_size) > ((ulg)high_buffer_start)) { + high_buffer_start = (uch *)(CONFIG_PHYSICAL_START + low_buffer_size); mv->hcount = 0; /* say: we need not to move high_buffer */ } else mv->hcount = -1; diff --git a/arch/i386/kernel/vmlinux.lds.S b/arch/i386/kernel/vmlinux.lds.S index db0833b..8bcf0e1 100644 --- a/arch/i386/kernel/vmlinux.lds.S +++ b/arch/i386/kernel/vmlinux.lds.S @@ -4,6 +4,7 @@ #define LOAD_OFFSET __PAGE_OFFSET +#include <linux/config.h> #include <asm-generic/vmlinux.lds.h> #include <asm/thread_info.h> #include <asm/page.h> @@ -15,7 +16,7 @@ ENTRY(phys_startup_32) jiffies = jiffies_64; SECTIONS { - . = __KERNEL_START; + . = LOAD_OFFSET + CONFIG_PHYSICAL_START; phys_startup_32 = startup_32 - LOAD_OFFSET; /* read-only */ .text : AT(ADDR(.text) - LOAD_OFFSET) { diff --git a/include/asm-i386/page.h b/include/asm-i386/page.h index eceb7f5..1af9f6b 100644 --- a/include/asm-i386/page.h +++ b/include/asm-i386/page.h @@ -112,12 +112,9 @@ #endif /* __ASSEMBLY__ */ #ifdef __ASSEMBLY__ #define __PAGE_OFFSET CONFIG_PAGE_OFFSET -#define __PHYSICAL_START CONFIG_PHYSICAL_START #else #define __PAGE_OFFSET ((unsigned long)CONFIG_PAGE_OFFSET) -#define __PHYSICAL_START ((unsigned long)CONFIG_PHYSICAL_START) #endif -#define __KERNEL_START (__PAGE_OFFSET + __PHYSICAL_START) #define PAGE_OFFSET ((unsigned long)__PAGE_OFFSET) -- 1.4.2.rc2.g5209e - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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