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authorHyok S. Choi <hyok.choi@samsung.com>2006-03-27 09:18:50 -0500
committerRussell King <rmk+kernel@arm.linux.org.uk>2006-03-27 09:18:50 -0500
commitc760fc1997e8156ebc4134c42c18f68137c689f9 (patch)
treed7ab9b7b93c8d6829a7d2b6d972b8405256d04d0 /arch/arm/kernel
parentf8c07de6beac55c3273cbd679bfa67555ef14ef5 (diff)
[ARM] nommu: fixups for the exception vectors
The high page vector (0xFFFF0000) does not supported in nommu mode. This patch allows the vectors to be 0x00000000 or the begining of DRAM in nommu mode. Signed-off-by: Hyok S. Choi <hyok.choi@samsung.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/kernel')
-rw-r--r--arch/arm/kernel/signal.h2
-rw-r--r--arch/arm/kernel/traps.c9
2 files changed, 6 insertions, 5 deletions
diff --git a/arch/arm/kernel/signal.h b/arch/arm/kernel/signal.h
index 9991049c522d..27beece15502 100644
--- a/arch/arm/kernel/signal.h
+++ b/arch/arm/kernel/signal.h
@@ -7,6 +7,6 @@
7 * it under the terms of the GNU General Public License version 2 as 7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation. 8 * published by the Free Software Foundation.
9 */ 9 */
10#define KERN_SIGRETURN_CODE 0xffff0500 10#define KERN_SIGRETURN_CODE (CONFIG_VECTORS_BASE + 0x00000500)
11 11
12extern const unsigned long sigreturn_codes[7]; 12extern const unsigned long sigreturn_codes[7];
diff --git a/arch/arm/kernel/traps.c b/arch/arm/kernel/traps.c
index 03924bcc6129..32b0570329e7 100644
--- a/arch/arm/kernel/traps.c
+++ b/arch/arm/kernel/traps.c
@@ -688,6 +688,7 @@ EXPORT_SYMBOL(abort);
688 688
689void __init trap_init(void) 689void __init trap_init(void)
690{ 690{
691 unsigned long vectors = CONFIG_VECTORS_BASE;
691 extern char __stubs_start[], __stubs_end[]; 692 extern char __stubs_start[], __stubs_end[];
692 extern char __vectors_start[], __vectors_end[]; 693 extern char __vectors_start[], __vectors_end[];
693 extern char __kuser_helper_start[], __kuser_helper_end[]; 694 extern char __kuser_helper_start[], __kuser_helper_end[];
@@ -698,9 +699,9 @@ void __init trap_init(void)
698 * into the vector page, mapped at 0xffff0000, and ensure these 699 * into the vector page, mapped at 0xffff0000, and ensure these
699 * are visible to the instruction stream. 700 * are visible to the instruction stream.
700 */ 701 */
701 memcpy((void *)0xffff0000, __vectors_start, __vectors_end - __vectors_start); 702 memcpy((void *)vectors, __vectors_start, __vectors_end - __vectors_start);
702 memcpy((void *)0xffff0200, __stubs_start, __stubs_end - __stubs_start); 703 memcpy((void *)vectors + 0x200, __stubs_start, __stubs_end - __stubs_start);
703 memcpy((void *)0xffff1000 - kuser_sz, __kuser_helper_start, kuser_sz); 704 memcpy((void *)vectors + 0x1000 - kuser_sz, __kuser_helper_start, kuser_sz);
704 705
705 /* 706 /*
706 * Copy signal return handlers into the vector page, and 707 * Copy signal return handlers into the vector page, and
@@ -709,6 +710,6 @@ void __init trap_init(void)
709 memcpy((void *)KERN_SIGRETURN_CODE, sigreturn_codes, 710 memcpy((void *)KERN_SIGRETURN_CODE, sigreturn_codes,
710 sizeof(sigreturn_codes)); 711 sizeof(sigreturn_codes));
711 712
712 flush_icache_range(0xffff0000, 0xffff0000 + PAGE_SIZE); 713 flush_icache_range(vectors, vectors + PAGE_SIZE);
713 modify_domain(DOMAIN_USER, DOMAIN_CLIENT); 714 modify_domain(DOMAIN_USER, DOMAIN_CLIENT);
714} 715}