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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)
- }
-}