summaryrefslogtreecommitdiffstats
path: root/arch/arm/kernel
diff options
context:
space:
mode:
authorLinus Torvalds <torvalds@linux-foundation.org>2016-03-19 16:31:54 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2016-03-19 16:31:54 -0700
commitde06dbfa7861c9019eedefc0c356ba86e5098f1b (patch)
tree69986680dc2c500f8c090e8a8c0b17dd7c5c8cbb /arch/arm/kernel
parentb31a3bc3dbd2f42b61674d37de7f46022e1f6846 (diff)
parent1b3bf847977c2e5974012ddd4b25fef50967d785 (diff)
downloadlinux-stable-de06dbfa7861c9019eedefc0c356ba86e5098f1b.tar.gz
linux-stable-de06dbfa7861c9019eedefc0c356ba86e5098f1b.tar.bz2
linux-stable-de06dbfa7861c9019eedefc0c356ba86e5098f1b.zip
Merge branch 'for-linus' of git://ftp.arm.linux.org.uk/~rmk/linux-arm
Pull ARM updates from Russell King: "Another mixture of changes this time around: - Split XIP linker file from main linker file to make it more maintainable, and various XIP fixes, and clean up a resulting macro. - Decompressor cleanups from Masahiro Yamada - Avoid printing an error for a missing L2 cache - Remove some duplicated symbols in System.map, and move vectors/stubs back into kernel VMA - Various low priority fixes from Arnd - Updates to allow bus match functions to return negative errno values, touching some drivers and the driver core. Greg has acked these changes. - Virtualisation platform udpates form Jean-Philippe Brucker. - Security enhancements from Kees Cook - Rework some Kconfig dependencies and move PSCI idle management code out of arch/arm into drivers/firmware/psci.c - ARM DMA mapping updates, touching media, acked by Mauro. - Fix places in ARM code which should be using virt_to_idmap() so that Keystone2 can work. - Fix Marvell Tauros2 to work again with non-DT boots. - Provide a delay timer for ARM Orion platforms" * 'for-linus' of git://ftp.arm.linux.org.uk/~rmk/linux-arm: (45 commits) ARM: 8546/1: dma-mapping: refactor to fix coherent+cma+gfp=0 ARM: 8547/1: dma-mapping: store buffer information ARM: 8543/1: decompressor: rename suffix_y to compress-y ARM: 8542/1: decompressor: merge piggy.*.S and simplify Makefile ARM: 8541/1: decompressor: drop redundant FORCE in Makefile ARM: 8540/1: decompressor: use clean-files instead of extra-y to clean files ARM: 8539/1: decompressor: drop more unneeded assignments to "targets" ARM: 8538/1: decompressor: drop unneeded assignments to "targets" ARM: 8532/1: uncompress: mark putc as inline ARM: 8531/1: turn init_new_context into an inline function ARM: 8530/1: remove VIRT_TO_BUS ARM: 8537/1: drop unused DEBUG_RODATA from XIP_KERNEL ARM: 8536/1: mm: hide __start_rodata_section_aligned for non-debug builds ARM: 8535/1: mm: DEBUG_RODATA makes no sense with XIP_KERNEL ARM: 8534/1: virt: fix hyp-stub build for pre-ARMv7 CPUs ARM: make the physical-relative calculation more obvious ARM: 8512/1: proc-v7.S: Adjust stack address when XIP_KERNEL ARM: 8411/1: Add default SPARSEMEM settings ARM: 8503/1: clk_register_clkdev: remove format string interface ARM: 8529/1: remove 'i' and 'zi' targets ...
Diffstat (limited to 'arch/arm/kernel')
-rw-r--r--arch/arm/kernel/entry-armv.S8
-rw-r--r--arch/arm/kernel/hibernate.c4
-rw-r--r--arch/arm/kernel/hyp-stub.S24
-rw-r--r--arch/arm/kernel/irq.c2
-rw-r--r--arch/arm/kernel/machine_kexec.c16
-rw-r--r--arch/arm/kernel/module.c2
-rw-r--r--arch/arm/kernel/reboot.c2
-rw-r--r--arch/arm/kernel/topology.c4
-rw-r--r--arch/arm/kernel/vmlinux-xip.lds.S316
-rw-r--r--arch/arm/kernel/vmlinux.lds.S60
10 files changed, 381 insertions, 57 deletions
diff --git a/arch/arm/kernel/entry-armv.S b/arch/arm/kernel/entry-armv.S
index 3ce377f7251f..e2550500486d 100644
--- a/arch/arm/kernel/entry-armv.S
+++ b/arch/arm/kernel/entry-armv.S
@@ -1064,7 +1064,6 @@ ENDPROC(vector_\name)
.endm
.section .stubs, "ax", %progbits
-__stubs_start:
@ This must be the first word
.word vector_swi
@@ -1202,14 +1201,13 @@ vector_addrexcptn:
.long __fiq_svc @ e
.long __fiq_svc @ f
- .globl vector_fiq_offset
- .equ vector_fiq_offset, vector_fiq
+ .globl vector_fiq
.section .vectors, "ax", %progbits
-__vectors_start:
+.L__vectors_start:
W(b) vector_rst
W(b) vector_und
- W(ldr) pc, __vectors_start + 0x1000
+ W(ldr) pc, .L__vectors_start + 0x1000
W(b) vector_pabt
W(b) vector_dabt
W(b) vector_addrexcptn
diff --git a/arch/arm/kernel/hibernate.c b/arch/arm/kernel/hibernate.c
index a71501ff6f18..b09561a6d06a 100644
--- a/arch/arm/kernel/hibernate.c
+++ b/arch/arm/kernel/hibernate.c
@@ -62,7 +62,7 @@ static int notrace arch_save_image(unsigned long unused)
ret = swsusp_save();
if (ret == 0)
- _soft_restart(virt_to_phys(cpu_resume), false);
+ _soft_restart(virt_to_idmap(cpu_resume), false);
return ret;
}
@@ -87,7 +87,7 @@ static void notrace arch_restore_image(void *unused)
for (pbe = restore_pblist; pbe; pbe = pbe->next)
copy_page(pbe->orig_address, pbe->address);
- _soft_restart(virt_to_phys(cpu_resume), false);
+ _soft_restart(virt_to_idmap(cpu_resume), false);
}
static u64 resume_stack[PAGE_SIZE/2/sizeof(u64)] __nosavedata;
diff --git a/arch/arm/kernel/hyp-stub.S b/arch/arm/kernel/hyp-stub.S
index 2a55373f49bf..0b1e4a93d67e 100644
--- a/arch/arm/kernel/hyp-stub.S
+++ b/arch/arm/kernel/hyp-stub.S
@@ -17,6 +17,7 @@
*/
#include <linux/init.h>
+#include <linux/irqchip/arm-gic-v3.h>
#include <linux/linkage.h>
#include <asm/assembler.h>
#include <asm/virt.h>
@@ -161,6 +162,29 @@ ARM_BE8(orr r7, r7, #(1 << 25)) @ HSCTLR.EE
1:
#endif
+#ifdef CONFIG_ARM_GIC_V3
+ @ Check whether GICv3 system registers are available
+ mrc p15, 0, r7, c0, c1, 1 @ ID_PFR1
+ ubfx r7, r7, #28, #4
+ cmp r7, #1
+ bne 2f
+
+ @ Enable system register accesses
+ mrc p15, 4, r7, c12, c9, 5 @ ICC_HSRE
+ orr r7, r7, #(ICC_SRE_EL2_ENABLE | ICC_SRE_EL2_SRE)
+ mcr p15, 4, r7, c12, c9, 5 @ ICC_HSRE
+ isb
+
+ @ SRE bit could be forced to 0 by firmware.
+ @ Check whether it sticks before accessing any other sysreg
+ mrc p15, 4, r7, c12, c9, 5 @ ICC_HSRE
+ tst r7, #ICC_SRE_EL2_SRE
+ beq 2f
+ mov r7, #0
+ mcr p15, 4, r7, c12, c11, 0 @ ICH_HCR
+2:
+#endif
+
bx lr @ The boot CPU mode is left in r4.
ENDPROC(__hyp_stub_install_secondary)
diff --git a/arch/arm/kernel/irq.c b/arch/arm/kernel/irq.c
index 1d45320ee125..ece04a457486 100644
--- a/arch/arm/kernel/irq.c
+++ b/arch/arm/kernel/irq.c
@@ -95,7 +95,7 @@ void __init init_IRQ(void)
outer_cache.write_sec = machine_desc->l2c_write_sec;
ret = l2x0_of_init(machine_desc->l2c_aux_val,
machine_desc->l2c_aux_mask);
- if (ret)
+ if (ret && ret != -ENODEV)
pr_err("L2C: failed to init: %d\n", ret);
}
diff --git a/arch/arm/kernel/machine_kexec.c b/arch/arm/kernel/machine_kexec.c
index 8bf3b7c09888..59fd0e24c56b 100644
--- a/arch/arm/kernel/machine_kexec.c
+++ b/arch/arm/kernel/machine_kexec.c
@@ -143,10 +143,8 @@ void (*kexec_reinit)(void);
void machine_kexec(struct kimage *image)
{
- unsigned long page_list;
- unsigned long reboot_code_buffer_phys;
- unsigned long reboot_entry = (unsigned long)relocate_new_kernel;
- unsigned long reboot_entry_phys;
+ unsigned long page_list, reboot_entry_phys;
+ void (*reboot_entry)(void);
void *reboot_code_buffer;
/*
@@ -159,9 +157,6 @@ void machine_kexec(struct kimage *image)
page_list = image->head & PAGE_MASK;
- /* we need both effective and real address here */
- reboot_code_buffer_phys =
- page_to_pfn(image->control_code_page) << PAGE_SHIFT;
reboot_code_buffer = page_address(image->control_code_page);
/* Prepare parameters for reboot_code_buffer*/
@@ -174,10 +169,11 @@ void machine_kexec(struct kimage *image)
/* copy our kernel relocation code to the control code page */
reboot_entry = fncpy(reboot_code_buffer,
- reboot_entry,
+ &relocate_new_kernel,
relocate_new_kernel_size);
- reboot_entry_phys = (unsigned long)reboot_entry +
- (reboot_code_buffer_phys - (unsigned long)reboot_code_buffer);
+
+ /* get the identity mapping physical address for the reboot code */
+ reboot_entry_phys = virt_to_idmap(reboot_entry);
pr_info("Bye!\n");
diff --git a/arch/arm/kernel/module.c b/arch/arm/kernel/module.c
index efdddcb97dd1..4f14b5ce6535 100644
--- a/arch/arm/kernel/module.c
+++ b/arch/arm/kernel/module.c
@@ -34,7 +34,7 @@
* recompiling the whole kernel when CONFIG_XIP_KERNEL is turned on/off.
*/
#undef MODULES_VADDR
-#define MODULES_VADDR (((unsigned long)_etext + ~PMD_MASK) & PMD_MASK)
+#define MODULES_VADDR (((unsigned long)_exiprom + ~PMD_MASK) & PMD_MASK)
#endif
#ifdef CONFIG_MMU
diff --git a/arch/arm/kernel/reboot.c b/arch/arm/kernel/reboot.c
index 38269358fd25..71a2ff9ec490 100644
--- a/arch/arm/kernel/reboot.c
+++ b/arch/arm/kernel/reboot.c
@@ -50,7 +50,7 @@ static void __soft_restart(void *addr)
flush_cache_all();
/* Switch to the identity mapping. */
- phys_reset = (phys_reset_t)(unsigned long)virt_to_idmap(cpu_reset);
+ phys_reset = (phys_reset_t)virt_to_idmap(cpu_reset);
phys_reset((unsigned long)addr);
/* Should never get here. */
diff --git a/arch/arm/kernel/topology.c b/arch/arm/kernel/topology.c
index 08b7847bf912..ec279d161b32 100644
--- a/arch/arm/kernel/topology.c
+++ b/arch/arm/kernel/topology.c
@@ -40,7 +40,7 @@
* to run the rebalance_domains for all idle cores and the cpu_capacity can be
* updated during this sequence.
*/
-static DEFINE_PER_CPU(unsigned long, cpu_scale);
+static DEFINE_PER_CPU(unsigned long, cpu_scale) = SCHED_CAPACITY_SCALE;
unsigned long arch_scale_cpu_capacity(struct sched_domain *sd, int cpu)
{
@@ -306,8 +306,6 @@ void __init init_cpu_topology(void)
cpu_topo->socket_id = -1;
cpumask_clear(&cpu_topo->core_sibling);
cpumask_clear(&cpu_topo->thread_sibling);
-
- set_capacity_scale(cpu, SCHED_CAPACITY_SCALE);
}
smp_wmb();
diff --git a/arch/arm/kernel/vmlinux-xip.lds.S b/arch/arm/kernel/vmlinux-xip.lds.S
new file mode 100644
index 000000000000..cba1ec899a69
--- /dev/null
+++ b/arch/arm/kernel/vmlinux-xip.lds.S
@@ -0,0 +1,316 @@
+/* ld script to make ARM Linux kernel
+ * taken from the i386 version by Russell King
+ * Written by Martin Mares <mj@atrey.karlin.mff.cuni.cz>
+ */
+
+#include <asm-generic/vmlinux.lds.h>
+#include <asm/cache.h>
+#include <asm/thread_info.h>
+#include <asm/memory.h>
+#include <asm/page.h>
+
+#define PROC_INFO \
+ . = ALIGN(4); \
+ VMLINUX_SYMBOL(__proc_info_begin) = .; \
+ *(.proc.info.init) \
+ VMLINUX_SYMBOL(__proc_info_end) = .;
+
+#define IDMAP_TEXT \
+ ALIGN_FUNCTION(); \
+ VMLINUX_SYMBOL(__idmap_text_start) = .; \
+ *(.idmap.text) \
+ VMLINUX_SYMBOL(__idmap_text_end) = .; \
+ . = ALIGN(PAGE_SIZE); \
+ VMLINUX_SYMBOL(__hyp_idmap_text_start) = .; \
+ *(.hyp.idmap.text) \
+ VMLINUX_SYMBOL(__hyp_idmap_text_end) = .;
+
+#ifdef CONFIG_HOTPLUG_CPU
+#define ARM_CPU_DISCARD(x)
+#define ARM_CPU_KEEP(x) x
+#else
+#define ARM_CPU_DISCARD(x) x
+#define ARM_CPU_KEEP(x)
+#endif
+
+#if (defined(CONFIG_SMP_ON_UP) && !defined(CONFIG_DEBUG_SPINLOCK)) || \
+ defined(CONFIG_GENERIC_BUG)
+#define ARM_EXIT_KEEP(x) x
+#define ARM_EXIT_DISCARD(x)
+#else
+#define ARM_EXIT_KEEP(x)
+#define ARM_EXIT_DISCARD(x) x
+#endif
+
+OUTPUT_ARCH(arm)
+ENTRY(stext)
+
+#ifndef __ARMEB__
+jiffies = jiffies_64;
+#else
+jiffies = jiffies_64 + 4;
+#endif
+
+SECTIONS
+{
+ /*
+ * XXX: The linker does not define how output sections are
+ * assigned to input sections when there are multiple statements
+ * matching the same input section name. There is no documented
+ * order of matching.
+ *
+ * unwind exit sections must be discarded before the rest of the
+ * unwind sections get included.
+ */
+ /DISCARD/ : {
+ *(.ARM.exidx.exit.text)
+ *(.ARM.extab.exit.text)
+ ARM_CPU_DISCARD(*(.ARM.exidx.cpuexit.text))
+ ARM_CPU_DISCARD(*(.ARM.extab.cpuexit.text))
+ ARM_EXIT_DISCARD(EXIT_TEXT)
+ ARM_EXIT_DISCARD(EXIT_DATA)
+ EXIT_CALL
+#ifndef CONFIG_MMU
+ *(.text.fixup)
+ *(__ex_table)
+#endif
+#ifndef CONFIG_SMP_ON_UP
+ *(.alt.smp.init)
+#endif
+ *(.discard)
+ *(.discard.*)
+ }
+
+ . = XIP_VIRT_ADDR(CONFIG_XIP_PHYS_ADDR);
+ _xiprom = .; /* XIP ROM area to be mapped */
+
+ .head.text : {
+ _text = .;
+ HEAD_TEXT
+ }
+
+ .text : { /* Real text segment */
+ _stext = .; /* Text and read-only data */
+ IDMAP_TEXT
+ __exception_text_start = .;
+ *(.exception.text)
+ __exception_text_end = .;
+ IRQENTRY_TEXT
+ TEXT_TEXT
+ SCHED_TEXT
+ LOCK_TEXT
+ KPROBES_TEXT
+ *(.gnu.warning)
+ *(.glue_7)
+ *(.glue_7t)
+ . = ALIGN(4);
+ *(.got) /* Global offset table */
+ ARM_CPU_KEEP(PROC_INFO)
+ }
+
+ RO_DATA(PAGE_SIZE)
+
+ . = ALIGN(4);
+ __ex_table : AT(ADDR(__ex_table) - LOAD_OFFSET) {
+ __start___ex_table = .;
+#ifdef CONFIG_MMU
+ *(__ex_table)
+#endif
+ __stop___ex_table = .;
+ }
+
+#ifdef CONFIG_ARM_UNWIND
+ /*
+ * Stack unwinding tables
+ */
+ . = ALIGN(8);
+ .ARM.unwind_idx : {
+ __start_unwind_idx = .;
+ *(.ARM.exidx*)
+ __stop_unwind_idx = .;
+ }
+ .ARM.unwind_tab : {
+ __start_unwind_tab = .;
+ *(.ARM.extab*)
+ __stop_unwind_tab = .;
+ }
+#endif
+
+ NOTES
+
+ _etext = .; /* End of text and rodata section */
+
+ /*
+ * The vectors and stubs are relocatable code, and the
+ * only thing that matters is their relative offsets
+ */
+ __vectors_start = .;
+ .vectors 0xffff0000 : AT(__vectors_start) {
+ *(.vectors)
+ }
+ . = __vectors_start + SIZEOF(.vectors);
+ __vectors_end = .;
+
+ __stubs_start = .;
+ .stubs ADDR(.vectors) + 0x1000 : AT(__stubs_start) {
+ *(.stubs)
+ }
+ . = __stubs_start + SIZEOF(.stubs);
+ __stubs_end = .;
+
+ PROVIDE(vector_fiq_offset = vector_fiq - ADDR(.vectors));
+
+ INIT_TEXT_SECTION(8)
+ .exit.text : {
+ ARM_EXIT_KEEP(EXIT_TEXT)
+ }
+ .init.proc.info : {
+ ARM_CPU_DISCARD(PROC_INFO)
+ }
+ .init.arch.info : {
+ __arch_info_begin = .;
+ *(.arch.info.init)
+ __arch_info_end = .;
+ }
+ .init.tagtable : {
+ __tagtable_begin = .;
+ *(.taglist.init)
+ __tagtable_end = .;
+ }
+#ifdef CONFIG_SMP_ON_UP
+ .init.smpalt : {
+ __smpalt_begin = .;
+ *(.alt.smp.init)
+ __smpalt_end = .;
+ }
+#endif
+ .init.pv_table : {
+ __pv_table_begin = .;
+ *(.pv_table)
+ __pv_table_end = .;
+ }
+ .init.data : {
+ INIT_SETUP(16)
+ INIT_CALLS
+ CON_INITCALL
+ SECURITY_INITCALL
+ INIT_RAM_FS
+ }
+
+#ifdef CONFIG_SMP
+ PERCPU_SECTION(L1_CACHE_BYTES)
+#endif
+
+ _exiprom = .; /* End of XIP ROM area */
+ __data_loc = ALIGN(4); /* location in binary */
+ . = PAGE_OFFSET + TEXT_OFFSET;
+
+ .data : AT(__data_loc) {
+ _data = .; /* address in memory */
+ _sdata = .;
+
+ /*
+ * first, the init task union, aligned
+ * to an 8192 byte boundary.
+ */
+ INIT_TASK_DATA(THREAD_SIZE)
+
+ . = ALIGN(PAGE_SIZE);
+ __init_begin = .;
+ INIT_DATA
+ ARM_EXIT_KEEP(EXIT_DATA)
+ . = ALIGN(PAGE_SIZE);
+ __init_end = .;
+
+ NOSAVE_DATA
+ CACHELINE_ALIGNED_DATA(L1_CACHE_BYTES)
+ READ_MOSTLY_DATA(L1_CACHE_BYTES)
+
+ /*
+ * and the usual data section
+ */
+ DATA_DATA
+ CONSTRUCTORS
+
+ _edata = .;
+ }
+ _edata_loc = __data_loc + SIZEOF(.data);
+
+#ifdef CONFIG_HAVE_TCM
+ /*
+ * We align everything to a page boundary so we can
+ * free it after init has commenced and TCM contents have
+ * been copied to its destination.
+ */
+ .tcm_start : {
+ . = ALIGN(PAGE_SIZE);
+ __tcm_start = .;
+ __itcm_start = .;
+ }
+
+ /*
+ * Link these to the ITCM RAM
+ * Put VMA to the TCM address and LMA to the common RAM
+ * and we'll upload the contents from RAM to TCM and free
+ * the used RAM after that.
+ */
+ .text_itcm ITCM_OFFSET : AT(__itcm_start)
+ {
+ __sitcm_text = .;
+ *(.tcm.text)
+ *(.tcm.rodata)
+ . = ALIGN(4);
+ __eitcm_text = .;
+ }
+
+ /*
+ * Reset the dot pointer, this is needed to create the
+ * relative __dtcm_start below (to be used as extern in code).
+ */
+ . = ADDR(.tcm_start) + SIZEOF(.tcm_start) + SIZEOF(.text_itcm);
+
+ .dtcm_start : {
+ __dtcm_start = .;
+ }
+
+ /* TODO: add remainder of ITCM as well, that can be used for data! */
+ .data_dtcm DTCM_OFFSET : AT(__dtcm_start)
+ {
+ . = ALIGN(4);
+ __sdtcm_data = .;
+ *(.tcm.data)
+ . = ALIGN(4);
+ __edtcm_data = .;
+ }
+
+ /* Reset the dot pointer or the linker gets confused */
+ . = ADDR(.dtcm_start) + SIZEOF(.data_dtcm);
+
+ /* End marker for freeing TCM copy in linked object */
+ .tcm_end : AT(ADDR(.dtcm_start) + SIZEOF(.data_dtcm)){
+ . = ALIGN(PAGE_SIZE);
+ __tcm_end = .;
+ }
+#endif
+
+ BSS_SECTION(0, 0, 0)
+ _end = .;
+
+ STABS_DEBUG
+}
+
+/*
+ * These must never be empty
+ * If you have to comment these two assert statements out, your
+ * binutils is too old (for other reasons as well)
+ */
+ASSERT((__proc_info_end - __proc_info_begin), "missing CPU support")
+ASSERT((__arch_info_end - __arch_info_begin), "no machine record defined")
+
+/*
+ * The HYP init code can't be more than a page long,
+ * and should not cross a page boundary.
+ * The above comment applies as well.
+ */
+ASSERT(__hyp_idmap_text_end - (__hyp_idmap_text_start & PAGE_MASK) <= PAGE_SIZE,
+ "HYP init code too big or misaligned")
diff --git a/arch/arm/kernel/vmlinux.lds.S b/arch/arm/kernel/vmlinux.lds.S
index b4139cbbbdd9..1fab979daeaf 100644
--- a/arch/arm/kernel/vmlinux.lds.S
+++ b/arch/arm/kernel/vmlinux.lds.S
@@ -3,14 +3,16 @@
* 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>
#include <asm/memory.h>
#include <asm/page.h>
-#ifdef CONFIG_ARM_KERNMEM_PERMS
#include <asm/pgtable.h>
-#endif
#define PROC_INFO \
. = ALIGN(4); \
@@ -89,17 +91,13 @@ SECTIONS
*(.discard.*)
}
-#ifdef CONFIG_XIP_KERNEL
- . = XIP_VIRT_ADDR(CONFIG_XIP_PHYS_ADDR);
-#else
. = PAGE_OFFSET + TEXT_OFFSET;
-#endif
.head.text : {
_text = .;
HEAD_TEXT
}
-#ifdef CONFIG_ARM_KERNMEM_PERMS
+#ifdef CONFIG_DEBUG_RODATA
. = ALIGN(1<<SECTION_SHIFT);
#endif
@@ -123,7 +121,7 @@ SECTIONS
ARM_CPU_KEEP(PROC_INFO)
}
-#ifdef CONFIG_DEBUG_RODATA
+#ifdef CONFIG_DEBUG_ALIGN_RODATA
. = ALIGN(1<<SECTION_SHIFT);
#endif
RO_DATA(PAGE_SIZE)
@@ -158,32 +156,33 @@ SECTIONS
_etext = .; /* End of text and rodata section */
-#ifndef CONFIG_XIP_KERNEL
-# ifdef CONFIG_ARM_KERNMEM_PERMS
+#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
*/
__vectors_start = .;
- .vectors 0 : AT(__vectors_start) {
+ .vectors 0xffff0000 : AT(__vectors_start) {
*(.vectors)
}
. = __vectors_start + SIZEOF(.vectors);
__vectors_end = .;
__stubs_start = .;
- .stubs 0x1000 : AT(__stubs_start) {
+ .stubs ADDR(.vectors) + 0x1000 : AT(__stubs_start) {
*(.stubs)
}
. = __stubs_start + SIZEOF(.stubs);
__stubs_end = .;
+ PROVIDE(vector_fiq_offset = vector_fiq - ADDR(.vectors));
+
INIT_TEXT_SECTION(8)
.exit.text : {
ARM_EXIT_KEEP(EXIT_TEXT)
@@ -214,37 +213,28 @@ 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_ARM_KERNMEM_PERMS
+#ifdef CONFIG_DEBUG_RODATA
. = ALIGN(1<<SECTION_SHIFT);
#else
. = ALIGN(THREAD_SIZE);
#endif
__init_end = .;
__data_loc = .;
-#endif
.data : AT(__data_loc) {
_data = .; /* address in memory */
@@ -256,15 +246,6 @@ 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)
@@ -342,6 +323,15 @@ SECTIONS
STABS_DEBUG
}
+#ifdef CONFIG_DEBUG_RODATA
+/*
+ * Without CONFIG_DEBUG_ALIGN_RODATA, __start_rodata_section_aligned will
+ * be the first section-aligned location after __start_rodata. Otherwise,
+ * it will be equal to __start_rodata.
+ */
+__start_rodata_section_aligned = ALIGN(__start_rodata, 1 << SECTION_SHIFT);
+#endif
+
/*
* These must never be empty
* If you have to comment these two assert statements out, your
@@ -357,3 +347,5 @@ 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 */