diff options
| author | Chris Brandt <chris.brandt@renesas.com> | 2016-02-03 15:58:10 +0100 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2016-02-11 15:33:39 +0000 |
| commit | 538bf4694898b19e76f32d554cc16135cf37b51c (patch) | |
| tree | 23bf4422d05f626d03d3c46ea5e98c4f7c571f2e /arch/arm/kernel/vmlinux.lds.S | |
| parent | 8b6f2499ac45d5a0ab2e4b6f9613ab3f60416be1 (diff) | |
ARM: 8513/1: xip: Move XIP linking to a separate file
When building an XIP kernel, the linker script needs to be much different
than a conventional kernel's script. Over time, it's been difficult to
maintain both XIP and non-XIP layouts in one linker script. Therefore,
this patch separates the two procedures into two completely different
files.
The new linker script is essentially a straight copy of the current script
with all the non-CONFIG_XIP_KERNEL portions removed.
Additionally, all CONFIG_XIP_KERNEL portions have been removed from the
existing linker script...never to return again.
It should be noted that this does not fix any current XIP issues, but
rather is the first move in fixing them properly with subsequent patches.
Signed-off-by: Chris Brandt <chris.brandt@renesas.com>
Acked-by: Nicolas Pitre <nico@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/kernel/vmlinux.lds.S')
| -rw-r--r-- | arch/arm/kernel/vmlinux.lds.S | 37 |
1 files changed, 10 insertions, 27 deletions
diff --git a/arch/arm/kernel/vmlinux.lds.S b/arch/arm/kernel/vmlinux.lds.S index a6e395c53a48..cdc84693091b 100644 --- a/arch/arm/kernel/vmlinux.lds.S +++ b/arch/arm/kernel/vmlinux.lds.S @@ -3,6 +3,10 @@ * Written by Martin Mares <mj@atrey.karlin.mff.cuni.cz> */ +#ifdef CONFIG_XIP_KERNEL +#include "vmlinux-xip.lds.S" +#else + #include <asm-generic/vmlinux.lds.h> #include <asm/cache.h> #include <asm/thread_info.h> @@ -84,11 +88,7 @@ SECTIONS *(.discard.*) } -#ifdef CONFIG_XIP_KERNEL - . = XIP_VIRT_ADDR(CONFIG_XIP_PHYS_ADDR); -#else . = PAGE_OFFSET + TEXT_OFFSET; -#endif .head.text : { _text = .; HEAD_TEXT @@ -152,14 +152,13 @@ SECTIONS _etext = .; /* End of text and rodata section */ -#ifndef CONFIG_XIP_KERNEL -# ifdef CONFIG_DEBUG_RODATA +#ifdef CONFIG_DEBUG_RODATA . = ALIGN(1<<SECTION_SHIFT); -# else +#else . = ALIGN(PAGE_SIZE); -# endif - __init_begin = .; #endif + __init_begin = .; + /* * The vectors and stubs are relocatable code, and the * only thing that matters is their relative offsets @@ -208,29 +207,21 @@ SECTIONS __pv_table_end = .; } .init.data : { -#ifndef CONFIG_XIP_KERNEL INIT_DATA -#endif INIT_SETUP(16) INIT_CALLS CON_INITCALL SECURITY_INITCALL INIT_RAM_FS } -#ifndef CONFIG_XIP_KERNEL .exit.data : { ARM_EXIT_KEEP(EXIT_DATA) } -#endif #ifdef CONFIG_SMP PERCPU_SECTION(L1_CACHE_BYTES) #endif -#ifdef CONFIG_XIP_KERNEL - __data_loc = ALIGN(4); /* location in binary */ - . = PAGE_OFFSET + TEXT_OFFSET; -#else #ifdef CONFIG_DEBUG_RODATA . = ALIGN(1<<SECTION_SHIFT); #else @@ -238,7 +229,6 @@ SECTIONS #endif __init_end = .; __data_loc = .; -#endif .data : AT(__data_loc) { _data = .; /* address in memory */ @@ -250,15 +240,6 @@ SECTIONS */ INIT_TASK_DATA(THREAD_SIZE) -#ifdef CONFIG_XIP_KERNEL - . = ALIGN(PAGE_SIZE); - __init_begin = .; - INIT_DATA - ARM_EXIT_KEEP(EXIT_DATA) - . = ALIGN(PAGE_SIZE); - __init_end = .; -#endif - NOSAVE_DATA CACHELINE_ALIGNED_DATA(L1_CACHE_BYTES) READ_MOSTLY_DATA(L1_CACHE_BYTES) @@ -351,3 +332,5 @@ ASSERT((__arch_info_end - __arch_info_begin), "no machine record defined") */ ASSERT(__hyp_idmap_text_end - (__hyp_idmap_text_start & PAGE_MASK) <= PAGE_SIZE, "HYP init code too big or misaligned") + +#endif /* CONFIG_XIP_KERNEL */ |