arch: add dependencie for CONFIG_SRAM_VECTOR_TABLE

Move SRAM_VECTOR_TABLE symbol from general Kconfig to Arch Kconfig
because it depends on the architecture possibility to relocate the
vector table.

Signed-off-by: Martin Hoff <martin.hoff@silabs.com>

Author: Martinhoff-maker

Kconfig.zephyr

@@ -215,12 +215,6 @@ config LINKER_SORT_BY_ALIGNMENT
 	  in decreasing size of symbols. This helps to minimize
 	  padding between symbols.
 
-config SRAM_VECTOR_TABLE
-	bool "Place the vector table in SRAM instead of flash"
-	help
-	  The option specifies that the vector table should be placed at the
-	  start of SRAM instead of the start of flash.
-
 config HAS_SRAM_OFFSET
 	bool
 	help

arch/Kconfig

@@ -573,6 +573,15 @@ config IRQ_OFFLOAD
 	  run in interrupt context. Only useful for test cases that need
 	  to validate the correctness of kernel objects in IRQ context.
 
+config SRAM_VECTOR_TABLE
+	bool "Place the vector table in SRAM instead of flash"
+	depends on ARCH_HAS_VECTOR_TABLE_RELOCATION
+	depends on XIP
+	depends on !ROMSTART_RELOCATION_ROM
+	help
+	  When XiP is enabled, this option will result in the vector table being
+	  relocated from Flash to SRAM.
+
 config IRQ_OFFLOAD_NESTED
 	bool "irq_offload() supports nested IRQs"
 	depends on IRQ_OFFLOAD
@@ -671,6 +680,9 @@ config ARCH_HAS_NOCACHE_MEMORY_SUPPORT
 config ARCH_HAS_RAMFUNC_SUPPORT
 	bool
 
+config ARCH_HAS_VECTOR_TABLE_RELOCATION
+	bool
+
 config ARCH_HAS_NESTED_EXCEPTION_DETECTION
 	bool
 

arch/arm/core/Kconfig

@@ -16,6 +16,7 @@ config CPU_CORTEX_M
 	select ARCH_HAS_USERSPACE if ARM_MPU
 	select ARCH_HAS_NOCACHE_MEMORY_SUPPORT if ARM_MPU && CPU_HAS_ARM_MPU && CPU_HAS_DCACHE
 	select ARCH_HAS_RAMFUNC_SUPPORT
+	select ARCH_HAS_VECTOR_TABLE_RELOCATION if CPU_CORTEX_M_HAS_VTOR
 	select ARCH_HAS_NESTED_EXCEPTION_DETECTION
 	select SWAP_NONATOMIC
 	select ARCH_HAS_EXTRA_EXCEPTION_INFO

doc/releases/migration-guide-4.2.rst

@@ -329,3 +329,9 @@ Modules
 
 Architectures
 *************
+
+* Moved :kconfig:option:`CONFIG_SRAM_VECTOR_TABLE` from ``zephyr/Kconfig.zephyr`` to
+  ``zephyr/arch/Kconfig`` and added dependency to :kconfig:option:`CONFIG_XIP`,
+  :kconfig:option:`CONFIG_ARCH_HAS_VECTOR_TABLE_RELOCATION` and
+  :kconfig:option:`CONFIG_ROMSTART_RELOCATION_ROM` to support relocation
+  of vector table in RAM.

doc/releases/release-notes-4.2.rst

@@ -106,6 +106,12 @@ Deprecated APIs and options
 New APIs and options
 ====================
 
+* Architectures
+
+  * :kconfig:option:`ARCH_HAS_VECTOR_TABLE_RELOCATION`
+  * :kconfig:option:`CONFIG_SRAM_VECTOR_TABLE` moved from ``zephyr/Kconfig.zephyr`` to
+    ``zephyr/arch/Kconfig`` and added dependencies to it.
+
 * Kernel
 
  * :c:macro:`K_TIMEOUT_ABS_SEC`