From bed8ed965e18a936b387293dc15be8d9a89452d9 Mon Sep 17 00:00:00 2001
From: liangkangnan <liangkangnan@163.com>
Date: Thu, 25 Nov 2021 09:02:32 +0800
Subject: [PATCH] sdk:bsp: add link script for flash

Signed-off-by: liangkangnan <liangkangnan@163.com>
---
 sdk/bsp/bsp.mk                     |   2 +-
 sdk/bsp/link_flash.lds             | 148 +++++++++++++++++++++++++++++
 sdk/bsp/{link.lds => link_rom.lds} |   0
 3 files changed, 149 insertions(+), 1 deletion(-)
 create mode 100644 sdk/bsp/link_flash.lds
 rename sdk/bsp/{link.lds => link_rom.lds} (100%)

diff --git a/sdk/bsp/bsp.mk b/sdk/bsp/bsp.mk
index f95f85a..a0b2023 100644
--- a/sdk/bsp/bsp.mk
+++ b/sdk/bsp/bsp.mk
@@ -31,7 +31,7 @@ C_SRCS += $(BSP_DIR)/lib/pinmux.c
 C_SRCS += $(BSP_DIR)/lib/flash_n25q.c
 C_SRCS += $(BSP_DIR)/lib/flash_ctrl.c
 
-LINKER_SCRIPT := $(BSP_DIR)/link.lds
+LINKER_SCRIPT := $(BSP_DIR)/link_rom.lds
 
 INCLUDES += -I$(BSP_DIR)
 
diff --git a/sdk/bsp/link_flash.lds b/sdk/bsp/link_flash.lds
new file mode 100644
index 0000000..7f6aa7d
--- /dev/null
+++ b/sdk/bsp/link_flash.lds
@@ -0,0 +1,148 @@
+OUTPUT_ARCH( "riscv" )
+ENTRY(_start)
+
+
+MEMORY
+{
+  flash (wxa!ri) : ORIGIN = 0x01000000, LENGTH = 256K
+  ram (wxa!ri) :   ORIGIN = 0x20000000, LENGTH = 16K
+}
+
+
+SECTIONS
+{
+   __stack_size = DEFINED(__stack_size) ? __stack_size : 8K;
+
+  .init           :
+  {
+    KEEP (*(SORT_NONE(.init)))
+  } >flash AT>flash 
+
+  .text           :
+  {
+    *(.text.unlikely .text.unlikely.*)
+    *(.text.startup .text.startup.*)
+    *(.text .text.*)
+    *(.gnu.linkonce.t.*)
+  } >flash AT>flash 
+
+  . = ALIGN(4);
+
+  PROVIDE (__etext = .);
+  PROVIDE (_etext = .);
+  PROVIDE (etext = .);
+
+  .preinit_array  :
+  {
+    PROVIDE_HIDDEN (__preinit_array_start = .);
+    KEEP (*(.preinit_array))
+    PROVIDE_HIDDEN (__preinit_array_end = .);
+  } >flash AT>flash 
+
+  .init_array     :
+  {
+    PROVIDE_HIDDEN (__init_array_start = .);
+    KEEP (*(SORT_BY_INIT_PRIORITY(.init_array.*) SORT_BY_INIT_PRIORITY(.ctors.*)))
+    KEEP (*(.init_array EXCLUDE_FILE (*crtbegin.o *crtbegin?.o *crtend.o *crtend?.o ) .ctors))
+    PROVIDE_HIDDEN (__init_array_end = .);
+  } >flash AT>flash 
+
+  .fini_array     :
+  {
+    PROVIDE_HIDDEN (__fini_array_start = .);
+    KEEP (*(SORT_BY_INIT_PRIORITY(.fini_array.*) SORT_BY_INIT_PRIORITY(.dtors.*)))
+    KEEP (*(.fini_array EXCLUDE_FILE (*crtbegin.o *crtbegin?.o *crtend.o *crtend?.o ) .dtors))
+    PROVIDE_HIDDEN (__fini_array_end = .);
+  } >flash AT>flash 
+
+  .ctors          :
+  {
+    /* gcc uses crtbegin.o to find the start of
+       the constructors, so we make sure it is
+       first.  Because this is a wildcard, it
+       doesn't matter if the user does not
+       actually link against crtbegin.o; the
+       linker won't look for a file to match a
+       wildcard.  The wildcard also means that it
+       doesn't matter which directory crtbegin.o
+       is in.  */
+    KEEP (*crtbegin.o(.ctors))
+    KEEP (*crtbegin?.o(.ctors))
+    /* We don't want to include the .ctor section from
+       the crtend.o file until after the sorted ctors.
+       The .ctor section from the crtend file contains the
+       end of ctors marker and it must be last */
+    KEEP (*(EXCLUDE_FILE (*crtend.o *crtend?.o ) .ctors))
+    KEEP (*(SORT(.ctors.*)))
+    KEEP (*(.ctors))
+  } >flash AT>flash 
+
+  .dtors          :
+  {
+    KEEP (*crtbegin.o(.dtors))
+    KEEP (*crtbegin?.o(.dtors))
+    KEEP (*(EXCLUDE_FILE (*crtend.o *crtend?.o ) .dtors))
+    KEEP (*(SORT(.dtors.*)))
+    KEEP (*(.dtors))
+  } >flash AT>flash 
+
+  .lalign         :
+  {
+    . = ALIGN(4);
+    PROVIDE( _data_lma = . );
+  } >flash AT>flash 
+
+  .dalign         :
+  {
+    . = ALIGN(4);
+    PROVIDE( _data = . );
+  } >ram AT>flash 
+
+  .data          :
+  {
+    *(.rdata)
+    *(.rodata .rodata.*)
+    *(.gnu.linkonce.r.*)
+    *(.data .data.*)
+    *(.gnu.linkonce.d.*)
+    . = ALIGN(8);
+    PROVIDE( __global_pointer$ = . + 0x800 );
+    *(.sdata .sdata.*)
+    *(.gnu.linkonce.s.*)
+    . = ALIGN(8);
+    *(.srodata.cst16)
+    *(.srodata.cst8)
+    *(.srodata.cst4)
+    *(.srodata.cst2)
+    *(.srodata .srodata.*)
+  } >ram AT>flash 
+
+  . = ALIGN(4);
+  PROVIDE( _edata = . );
+  PROVIDE( edata = . );
+
+  PROVIDE( _fbss = . );
+  PROVIDE( __bss_start = . );
+  .bss            :
+  {
+    *(.sbss*)
+    *(.gnu.linkonce.sb.*)
+    *(.bss .bss.*)
+    *(.gnu.linkonce.b.*)
+    *(COMMON)
+    . = ALIGN(4);
+  } >ram AT>ram 
+
+  . = ALIGN(8);
+  PROVIDE( _end = . );
+  PROVIDE( end = . );
+
+  .stack ORIGIN(ram) + LENGTH(ram) - __stack_size :
+  {
+    PROVIDE( _heap_end = . );
+    . = __stack_size;
+    PROVIDE( _sp = . );
+    __freertos_irq_stack_top = .;
+  } >ram AT>ram
+
+}
diff --git a/sdk/bsp/link.lds b/sdk/bsp/link_rom.lds
similarity index 100%
rename from sdk/bsp/link.lds
rename to sdk/bsp/link_rom.lds