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-rw-r--r--arch/xtensa/Kconfig40
-rw-r--r--arch/xtensa/configs/smp_lx200_defconfig1
-rw-r--r--arch/xtensa/configs/virt_defconfig1
-rw-r--r--arch/xtensa/include/asm/vectors.h4
-rw-r--r--arch/xtensa/kernel/setup.c4
-rw-r--r--arch/xtensa/kernel/vmlinux.lds.S21
6 files changed, 51 insertions, 20 deletions
diff --git a/arch/xtensa/Kconfig b/arch/xtensa/Kconfig
index 06e6161797fa..133385d13c02 100644
--- a/arch/xtensa/Kconfig
+++ b/arch/xtensa/Kconfig
@@ -572,15 +572,41 @@ config KERNEL_LOAD_ADDRESS
If unsure, leave the default value here.
-config VECTORS_OFFSET
- hex "Kernel vectors offset"
- default 0x00003000
- depends on !XIP_KERNEL
+choice
+ prompt "Relocatable vectors location"
+ default XTENSA_VECTORS_IN_TEXT
help
- This is the offset of the kernel image from the relocatable vectors
- base.
+ Choose whether relocatable vectors are merged into the kernel .text
+ or placed separately at runtime. This option does not affect
+ configurations without VECBASE register where vectors are always
+ placed at their hardware-defined locations.
- If unsure, leave the default value here.
+config XTENSA_VECTORS_IN_TEXT
+ bool "Merge relocatable vectors into kernel text"
+ depends on !MTD_XIP
+ help
+ This option puts relocatable vectors into the kernel .text section
+ with proper alignment.
+ This is a safe choice for most configurations.
+
+config XTENSA_VECTORS_SEPARATE
+ bool "Put relocatable vectors at fixed address"
+ help
+ This option puts relocatable vectors at specific virtual address.
+ Vectors are merged with the .init data in the kernel image and
+ are copied into their designated location during kernel startup.
+ Use it to put vectors into IRAM or out of FLASH on kernels with
+ XIP-aware MTD support.
+
+endchoice
+
+config VECTORS_ADDR
+ hex "Kernel vectors virtual address"
+ default 0x00000000
+ depends on XTENSA_VECTORS_SEPARATE
+ help
+ This is the virtual address of the (relocatable) vectors base.
+ It must be within KSEG if MMU is used.
config XIP_DATA_ADDR
hex "XIP kernel data virtual address"
diff --git a/arch/xtensa/configs/smp_lx200_defconfig b/arch/xtensa/configs/smp_lx200_defconfig
index 8b3bc92a079c..4f1c7998b030 100644
--- a/arch/xtensa/configs/smp_lx200_defconfig
+++ b/arch/xtensa/configs/smp_lx200_defconfig
@@ -30,7 +30,6 @@ CONFIG_SMP=y
CONFIG_HOTPLUG_CPU=y
# CONFIG_INITIALIZE_XTENSA_MMU_INSIDE_VMLINUX is not set
# CONFIG_PCI is not set
-CONFIG_VECTORS_OFFSET=0x00002000
CONFIG_XTENSA_PLATFORM_XTFPGA=y
CONFIG_CMDLINE_BOOL=y
CONFIG_CMDLINE="earlycon=uart8250,mmio32native,0xfd050020,115200n8 console=ttyS0,115200n8 ip=dhcp root=/dev/nfs rw debug memmap=96M@0"
diff --git a/arch/xtensa/configs/virt_defconfig b/arch/xtensa/configs/virt_defconfig
index 4fddd8512350..6d1387dfa96f 100644
--- a/arch/xtensa/configs/virt_defconfig
+++ b/arch/xtensa/configs/virt_defconfig
@@ -19,7 +19,6 @@ CONFIG_KALLSYMS_ALL=y
CONFIG_PERF_EVENTS=y
CONFIG_XTENSA_VARIANT_DC233C=y
CONFIG_XTENSA_UNALIGNED_USER=y
-CONFIG_VECTORS_OFFSET=0x00002000
CONFIG_XTENSA_KSEG_512M=y
CONFIG_HIGHMEM=y
CONFIG_CMDLINE_BOOL=y
diff --git a/arch/xtensa/include/asm/vectors.h b/arch/xtensa/include/asm/vectors.h
index 140f30762cf9..704286c35640 100644
--- a/arch/xtensa/include/asm/vectors.h
+++ b/arch/xtensa/include/asm/vectors.h
@@ -34,8 +34,8 @@
#endif
#define RESET_VECTOR1_VADDR (XCHAL_RESET_VECTOR1_VADDR)
-#ifdef CONFIG_VECTORS_OFFSET
-#define VECBASE_VADDR (KERNELOFFSET - CONFIG_VECTORS_OFFSET)
+#ifdef CONFIG_VECTORS_ADDR
+#define VECBASE_VADDR (CONFIG_VECTORS_ADDR)
#else
#define VECBASE_VADDR _vecbase
#endif
diff --git a/arch/xtensa/kernel/setup.c b/arch/xtensa/kernel/setup.c
index fefbdce1db99..1e9b9e7d9583 100644
--- a/arch/xtensa/kernel/setup.c
+++ b/arch/xtensa/kernel/setup.c
@@ -349,7 +349,7 @@ void __init setup_arch(char **cmdline_p)
mem_reserve(__pa(_xip_start), __pa(_xip_end));
#endif
-#ifdef CONFIG_VECTORS_OFFSET
+#ifdef CONFIG_VECTORS_ADDR
mem_reserve(__pa(&_WindowVectors_text_start),
__pa(&_WindowVectors_text_end));
@@ -388,7 +388,7 @@ void __init setup_arch(char **cmdline_p)
__pa(&_Level6InterruptVector_text_end));
#endif
-#endif /* CONFIG_VECTORS_OFFSET */
+#endif /* CONFIG_VECTORS_ADDR */
#ifdef CONFIG_SMP
mem_reserve(__pa(&_SecondaryResetVector_text_start),
diff --git a/arch/xtensa/kernel/vmlinux.lds.S b/arch/xtensa/kernel/vmlinux.lds.S
index d9e547810b6c..d23a6e38f062 100644
--- a/arch/xtensa/kernel/vmlinux.lds.S
+++ b/arch/xtensa/kernel/vmlinux.lds.S
@@ -47,9 +47,15 @@ jiffies = jiffies_64;
LONG(sym ## _end); \
LONG(LOADADDR(section))
+#if !defined(CONFIG_VECTORS_ADDR) && XCHAL_HAVE_VECBASE
+#define MERGED_VECTORS 1
+#else
+#define MERGED_VECTORS 0
+#endif
+
/*
- * Macro to define a section for a vector. When CONFIG_VECTORS_OFFSET is
- * defined code for every vector is located with other init data. At startup
+ * Macro to define a section for a vector. When MERGED_VECTORS is 0
+ * code for every vector is located with other init data. At startup
* time head.S copies code for every vector to its final position according
* to description recorded in the corresponding RELOCATE_ENTRY.
*/
@@ -84,7 +90,7 @@ SECTIONS
/* The HEAD_TEXT section must be the first section! */
HEAD_TEXT
-#ifndef CONFIG_VECTORS_OFFSET
+#if MERGED_VECTORS
. = ALIGN(PAGE_SIZE);
_vecbase = .;
@@ -159,7 +165,7 @@ SECTIONS
. = ALIGN(16);
__boot_reloc_table_start = ABSOLUTE(.);
-#ifdef CONFIG_VECTORS_OFFSET
+#if !MERGED_VECTORS
RELOCATE_ENTRY(_WindowVectors_text,
.WindowVectors.text);
#if XCHAL_EXCM_LEVEL >= 2
@@ -220,7 +226,7 @@ SECTIONS
#undef LAST
#define LAST .dummy
-#ifdef CONFIG_VECTORS_OFFSET
+#if !MERGED_VECTORS
/* The vectors are relocated to the real position at startup time */
SECTION_VECTOR4 (_WindowVectors_text,
@@ -299,7 +305,7 @@ SECTIONS
#define LAST .SecondaryResetVector.text
#endif
-#ifdef CONFIG_VECTORS_OFFSET
+#if !MERGED_VECTORS
SECTION_VECTOR4 (_exception_text,
.exception.text,
,
@@ -310,6 +316,7 @@ SECTIONS
#endif
. = (LOADADDR(LAST) + SIZEOF(LAST) + 3) & ~ 3;
+ .dummy1 : AT(ADDR(.dummy1)) { LONG(0) }
. = ALIGN(PAGE_SIZE);
#ifndef CONFIG_XIP_KERNEL
@@ -327,7 +334,7 @@ SECTIONS
#undef LOAD_OFFSET
#define LOAD_OFFSET \
- (CONFIG_XIP_DATA_ADDR - (LOADADDR(.dummy) + SIZEOF(.dummy) + 3) & ~ 3)
+ (CONFIG_XIP_DATA_ADDR - (LOADADDR(.dummy1) + SIZEOF(.dummy1) + 3) & ~ 3)
_xip_data_start = .;
_sdata = .;
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