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authorNicolas Pitre <nicolas.pitre@linaro.org>2012-03-18 20:29:42 +0100
committerRussell King <rmk+kernel@arm.linux.org.uk>2012-05-04 16:56:46 +0100
commitf67860a76f162ebcc6a2cacf3b0538d8a67d55ae (patch)
treec7f09427e97be3a5ffc11574d99080ceb72bc9aa
parentc5102f5935503ebebad46e137d0eef68f272cc16 (diff)
ARM: 7363/1: DEBUG_LL: limit early mapping to the minimum
There is just no point mapping up to 512MB for a serial port. Using a single 1MB entry is way sufficient for all users. This will create less interference for the following debugging patch. Signed-off-by: Nicolas Pitre <nico@linaro.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
-rw-r--r--arch/arm/kernel/head.S9
1 files changed, 1 insertions, 8 deletions
diff --git a/arch/arm/kernel/head.S b/arch/arm/kernel/head.S
index 3bf0c7f8b043..835898e7d704 100644
--- a/arch/arm/kernel/head.S
+++ b/arch/arm/kernel/head.S
@@ -277,10 +277,6 @@ __create_page_tables:
mov r3, r3, lsl #PMD_ORDER
add r0, r4, r3
- rsb r3, r3, #0x4000 @ PTRS_PER_PGD*sizeof(long)
- cmp r3, #0x0800 @ limit to 512MB
- movhi r3, #0x0800
- add r6, r0, r3
mov r3, r7, lsr #SECTION_SHIFT
ldr r7, [r10, #PROCINFO_IO_MMUFLAGS] @ io_mmuflags
orr r3, r7, r3, lsl #SECTION_SHIFT
@@ -289,13 +285,10 @@ __create_page_tables:
#else
orr r3, r3, #PMD_SECT_XN
#endif
-1: str r3, [r0], #4
+ str r3, [r0], #4
#ifdef CONFIG_ARM_LPAE
str r7, [r0], #4
#endif
- add r3, r3, #1 << SECTION_SHIFT
- cmp r0, r6
- blo 1b
#else /* CONFIG_DEBUG_ICEDCC || CONFIG_DEBUG_SEMIHOSTING */
/* we don't need any serial debugging mappings */