You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
84 lines
3.9 KiB
84 lines
3.9 KiB
/**************************************************************************** |
|
* configs/same70-xplained/scripts/memory.ld |
|
* |
|
* Copyright (C) 2015 Gregory Nutt. All rights reserved. |
|
* Author: Gregory Nutt <gnutt@nuttx.org> |
|
* |
|
* Redistribution and use in source and binary forms, with or without |
|
* modification, are permitted provided that the following conditions |
|
* are met: |
|
* |
|
* 1. Redistributions of source code must retain the above copyright |
|
* notice, this list of conditions and the following disclaimer. |
|
* 2. Redistributions in binary form must reproduce the above copyright |
|
* notice, this list of conditions and the following disclaimer in |
|
* the documentation and/or other materials provided with the |
|
* distribution. |
|
* 3. Neither the name NuttX nor the names of its contributors may be |
|
* used to endorse or promote products derived from this software |
|
* without specific prior written permission. |
|
* |
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
|
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
|
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS |
|
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE |
|
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, |
|
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
|
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS |
|
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED |
|
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN |
|
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
|
* POSSIBILITY OF SUCH DAMAGE. |
|
* |
|
****************************************************************************/ |
|
|
|
/* The SAME70Q21 has 2048Kb of FLASH beginning at address 0x0040:0000 and |
|
* 384Kb of SRAM beginining at 0x2040:0000 |
|
* |
|
* When booting from FLASH, FLASH memory is aliased to address 0x0000:0000 |
|
* where the code expects to begin execution by jumping to the entry point in |
|
* the 0x0400:0000 address range. |
|
* |
|
* NOTE: that the DTCM address of 0x2000:0000 is used for SRAM. If DTCM is |
|
* disabled, then the accesses will actually occur on the AHB bus. |
|
* |
|
* The user space partition will be spanned with a single region of size |
|
* 2**n bytes. The alignment of the user-space region must be the same. |
|
* As a consequence, as the user-space increases in size, the alignment |
|
* requirement also increases. The sizes below give the largest possible |
|
* user address spaces (but leave far too much for the OS). |
|
* |
|
* The solution to this wasted memory is to (1) use more than one region to |
|
* span the user spaces, or (2) poke holes in a larger region to trim it |
|
* to fit better. |
|
* |
|
* A detailed memory map for the 384KB SRAM region is as follows: |
|
* |
|
* 0x20000 0000: Kernel .data region. Typical size: 0.1KB |
|
* ------- ---- Kernel .bss region. Typical size: 1.8KB |
|
* 0x20000 0800: Kernel IDLE thread stack (approximate). Size is |
|
* determined by CONFIG_IDLETHREAD_STACKSIZE and |
|
* adjustments for alignment. Typical is 1KB. |
|
* ------- ---- Padded to 4KB |
|
* 0x20002 0000: User .data region. Size is variable. |
|
* ------- ---- User .bss region Size is variable. |
|
* 0x20000 2000: Beginning of kernel heap. Size determined by |
|
* CONFIG_MM_KERNEL_HEAPSIZE. |
|
* ------- ---- Beginning of user heap. Can vary with other settings. |
|
* 0x20004 0000: End+1 of mappable internal SRAM |
|
*/ |
|
|
|
MEMORY |
|
{ |
|
/* 2048KiB of internal FLASH */ |
|
|
|
kflash (rx) : ORIGIN = 0x00400000, LENGTH = 1M |
|
uflash (rx) : ORIGIN = 0x00500000, LENGTH = 1M |
|
|
|
/* 384Kb of internal SRAM */ |
|
|
|
ksram (rwx) : ORIGIN = 0x20000000, LENGTH = 128K |
|
usram (rwx) : ORIGIN = 0x20020000, LENGTH = 128K |
|
xsram (rwx) : ORIGIN = 0x20040000, LENGTH = 128K |
|
}
|
|
|