[arch] add riscv64 linker

link/riscv64/link.ld

@@ -0,0 +1,59 @@
+/* SPDX-License-Identifier: Apache-2.0 */
+
+OUTPUT_FORMAT("elf64-littleriscv", "elf64-littleriscv", "elf64-littleriscv")
+OUTPUT_ARCH("riscv")
+SEARCH_DIR(.)
+
+/* Memory Spaces Definitions */
+MEMORY
+{
+  ram   (rwx) : ORIGIN = @ARCH_START_ADDRESS@, LENGTH = @ARCH_SRAM_LENGTH@ /* SRAMC. 132K on boot mode, 100K on FEL mode */
+}
+
+/* The stack size used by the application. NOTE: you need to adjust according to your application. */
+STACK_SIZE = 0x1000; /* 4KB */
+
+/* Section Definitions */
+SECTIONS
+{
+
+    .text :
+    {
+        . = ALIGN(4);
+        PROVIDE(__spl_start = .);
+        *(.text .text.*)
+        PROVIDE(__ddr_bin_start = .);
+        KEEP(*(.init_dram_bin))
+        PROVIDE(__ddr_bin_end = .);
+        KEEP(*(.note.gnu.build-id))
+        . = ALIGN(4);
+    } > ram
+
+    . = ALIGN(4);
+
+    PROVIDE(__spl_end = .);
+    PROVIDE(__spl_size = __spl_end - __spl_start);
+
+    /* .bss section which is used for uninitialized data */
+    .bss (NOLOAD) :
+    {
+        . = ALIGN(4);
+        _sbss = . ;
+        *(.bss .bss.*)
+        *(COMMON)
+        . = ALIGN(4);
+        _ebss = . ;
+    } > ram
+
+    .stack (NOLOAD):
+    {
+        . = ALIGN(8);
+        /* SRV stack section */
+        __stack_srv_start = .;
+        . += STACK_SIZE;
+        __stack_srv_end = .;
+    } > ram
+
+    . = ALIGN(4);
+    _end = . ;
+}