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Commit f67860a7 authored by Nicolas Pitre's avatar Nicolas Pitre Committed by Russell King
Browse files

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: default avatarNicolas Pitre <nico@linaro.org>
Signed-off-by: default avatarRussell King <rmk+kernel@arm.linux.org.uk>
parent c5102f59

arch/arm/kernel/head.S

+1 −8
Original line number Diff line number Diff line
@@ -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 */