boot: make linker definitions generic

Signed-off-by: Axel Heider <axelheider@gmx.de>

include/hardware.h

@@ -46,8 +46,14 @@
 
 /* This symbol is generated by the linker and marks the last valid
  * address in the kernel's virtual region */
-extern char ki_end[];
-#define KERNEL_ELF_TOP ((paddr_t)(&ki_end))
+extern char ki_end[1];
+
+/* This symbol is generated by the linker and marks the end of boot
+ * code/data in kernel image */
+extern char ki_boot_end[1];
+
+
+#define KERNEL_ELF_TOP ((paddr_t)ki_end)
 #define KERNEL_ELF_PADDR_TOP (KERNEL_ELF_TOP - KERNEL_ELF_BASE_OFFSET)
 
 #endif /* __ASSEMBLER__ */

src/arch/arm/kernel/boot.c

@@ -26,11 +26,6 @@
 #ifdef CONFIG_ARM_SMMU
 #include <drivers/smmu/smmuv2.h>
 #endif
-/* pointer to the end of boot code/data in kernel image */
-/* need a fake array to get the pointer from the linker script */
-extern char ki_boot_end[1];
-/* pointer to end of kernel image */
-extern char ki_end[1];
 
 #ifdef ENABLE_SMP_SUPPORT
 /* sync variable to prevent other nodes from booting

src/arch/riscv/kernel/boot.c

@@ -18,12 +18,6 @@
 #include <plat/machine/hardware.h>
 #include <machine.h>
 
-/* pointer to the end of boot code/data in kernel image */
-/* need a fake array to get the pointer from the linker script */
-extern char ki_boot_end[1];
-/* pointer to end of kernel image */
-extern char ki_end[1];
-
 #ifdef ENABLE_SMP_SUPPORT
 BOOT_BSS static volatile word_t node_boot_lock;
 #endif

src/arch/x86/kernel/boot_sys.c

@@ -36,8 +36,6 @@ extern char boot_stack_bottom[1];
 extern char boot_stack_top[1];
 
 /* locations in kernel image */
-extern char ki_boot_end[1];
-extern char ki_end[1];
 extern char ki_skim_start[1];
 extern char ki_skim_end[1];