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+; Copyright (c) 2021 Arm Limited. All rights reserved.
+; SPDX-License-Identifier: Apache-2.0
+;
+; Licensed under the Apache License, Version 2.0 (the "License");
+; you may not use this file except in compliance with the License.
+; You may obtain a copy of the License at
+;
+; http://www.apache.org/licenses/LICENSE-2.0
+;
+; Unless required by applicable law or agreed to in writing, software
+; distributed under the License is distributed on an "AS IS" BASIS,
+; WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+; See the License for the specific language governing permissions and
+; limitations under the License.
+
+; *************************************************************
+; *** Scatter-Loading Description File ***
+; *************************************************************
+;
+; Sections used:
+;---------------------------------------------------------
+; | Start | End | Size | Remarks |
+;-|-------------|-------------|-------------|------------|
+; | 0x0000_0000 | 0x0010_0000 | 0x0010_0000 | ITCM (RO) |
+; | 0x0010_0000 | 0x0030_0000 | 0x0020_0000 | BRAM (RW) |
+; | 0x2000_0000 | 0x2040_0000 | 0x0040_0000 | DTCM (RW) |
+; | 0x6000_0000 | 0x6200_0000 | 0x0200_0000 | DRAM (RW) |
+;-|-------------|-------------|-------------|------------|
+; ITCM is aliased at 0x1000_0000 (single bank)
+; BRAM is aliased at 0x1010_0000
+; DTCM is aliased at 0x3000_0000 (four banks of 1MiB each)
+; DRAM is aliased at 0x7000_0000 (section is 256MiB)
+;
+; Note: Ethos-U55 can only access DRAM and BRAM sections
+;---------------------------------------------------------
+; First load region
+;---------------------------------------------------------
+LOAD_REGION_0 0x00000000 0x00100000
+{
+ ;-----------------------------------------------------
+ ; First part of code mem - 1MiB
+ ;-----------------------------------------------------
+ itcm.bin 0x00000000 0x00100000
+ {
+ *.o (RESET, +First)
+ * (InRoot$$Sections)
+ .ANY (+RO)
+ }
+
+ ;-----------------------------------------------------
+ ; Code memory's 2MiB - reserved for activation buffers
+ ; Make sure this is uninitialised.
+ ;-----------------------------------------------------
+ bram.bin 0x00100000 UNINIT 0x00200000
+ {
+ ; activation buffers a.k.a tensor arena
+ *.o (.bss.NoInit.activation_buf)
+ }
+
+ ;-----------------------------------------------------
+ ; 1MiB bank is used for any other RW or ZI data
+ ; Note: this region is internal to the Cortex-M CPU
+ ;-----------------------------------------------------
+ dtcm.bin 0x20000000 0x00100000
+ {
+ .ANY(+RW +ZI)
+ }
+
+ ;-----------------------------------------------------
+ ; 128kiB of stack space within SRAM region
+ ;-----------------------------------------------------
+ ARM_LIB_STACK 0x20100000 EMPTY ALIGN 8 0x00020000
+ {}
+
+ ;-----------------------------------------------------
+ ; 2MiB of heap space within the SRAM region
+ ;-----------------------------------------------------
+ ARM_LIB_HEAP 0x20200000 EMPTY ALIGN 8 0x00200000
+ {}
+}
+
+;---------------------------------------------------------
+; Second load region
+;---------------------------------------------------------
+LOAD_REGION_1 0x60000000 0x02000000
+{
+ ;-----------------------------------------------------
+ ; 32 MiB of DRAM space for nn model and input vectors
+ ;-----------------------------------------------------
+ dram.bin 0x60000000 0x02000000
+ {
+ ; nn model's baked in input matrices
+ *.o (ifm)
+
+ ; nn model
+ *.o (nn_model)
+
+ ; if the activation buffer (tensor arena) doesn't
+ ; fit in the SRAM region, we accommodate it here
+ *.o (activation_buf)
+ }
+}