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alif/mpu: Add custom MPU_Load_Regions function.

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Signed-off-by: Damien George <damien@micropython.org>
This commit is contained in:
Damien George
2024-10-10 18:20:06 +11:00
parent 58d6fe236b
commit 4c4b4844df
3 changed files with 110 additions and 0 deletions
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1
ports/alif/alif.mk
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@@ -119,6 +119,7 @@ SRC_C = \
main.c \ main.c \
modalif.c \ modalif.c \
mphalport.c \ mphalport.c \
mpu.c \
mpuart.c \ mpuart.c \
msc_disk.c \ msc_disk.c \
ospi_flash.c \ ospi_flash.c \

78
ports/alif/mpu.c Normal file
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@@ -0,0 +1,78 @@
/*
* This file is part of the MicroPython project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2024 OpenMV LLC.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include "py/mpconfig.h"
#include "mpu.h"
#include ALIF_CMSIS_H
static const ARM_MPU_Region_t mpu_table[] __STARTUP_RO_DATA_ATTRIBUTE = {
{ /* SRAM0 - 4MB : RO-0, NP-1, XN-0 */
.RBAR = ARM_MPU_RBAR(0x02000000, ARM_MPU_SH_NON, 0, 1, 0),
.RLAR = ARM_MPU_RLAR(0x023FFFFF, MP_MPU_ATTR_INDEX_NORMAL_WT_RA_TRANSIENT)
},
{ /* SRAM1 - 2.5MB : RO-0, NP-1, XN-0 */
.RBAR = ARM_MPU_RBAR(0x08000000, ARM_MPU_SH_NON, 0, 1, 0),
.RLAR = ARM_MPU_RLAR(0x0827FFFF, MP_MPU_ATTR_INDEX_NORMAL_WB_RA_WA)
},
{ /* Host Peripherals - 16MB : RO-0, NP-1, XN-1 */
.RBAR = ARM_MPU_RBAR(0x1A000000, ARM_MPU_SH_NON, 0, 1, 1),
.RLAR = ARM_MPU_RLAR(0x1AFFFFFF, MP_MPU_ATTR_INDEX_DEVICE_nGnRE)
},
{ /* MRAM - 5.5MB : RO-1, NP-1, XN-0 */
.RBAR = ARM_MPU_RBAR(0x80000000, ARM_MPU_SH_NON, 1, 1, 0),
.RLAR = ARM_MPU_RLAR(0x8057FFFF, MP_MPU_ATTR_INDEX_NORMAL_WT_RA)
},
{ /* OSPI Regs - 16MB : RO-0, NP-1, XN-1 */
.RBAR = ARM_MPU_RBAR(0x83000000, ARM_MPU_SH_NON, 0, 1, 1),
.RLAR = ARM_MPU_RLAR(0x83FFFFFF, MP_MPU_ATTR_INDEX_DEVICE_nGnRE)
},
{ /* OSPI0 XIP flash - 512MB : RO-1, NP-1, XN-0 */
.RBAR = ARM_MPU_RBAR(0xA0000000, ARM_MPU_SH_NON, 1, 1, 0),
.RLAR = ARM_MPU_RLAR(0xBFFFFFFF, MP_MPU_ATTR_INDEX_NORMAL_NON_CACHEABLE)
},
};
void MPU_Load_Regions(void) {
// Configure memory attributes.
ARM_MPU_SetMemAttr(MP_MPU_ATTR_INDEX_NORMAL_WT_RA_TRANSIENT,
ARM_MPU_ATTR(ARM_MPU_ATTR_MEMORY_(0, 0, 1, 0), ARM_MPU_ATTR_MEMORY_(0, 0, 1, 0)));
ARM_MPU_SetMemAttr(MP_MPU_ATTR_INDEX_DEVICE_nGnRE,
ARM_MPU_ATTR(ARM_MPU_ATTR_DEVICE, ARM_MPU_ATTR_DEVICE_nGnRE));
ARM_MPU_SetMemAttr(MP_MPU_ATTR_INDEX_NORMAL_WB_RA_WA,
ARM_MPU_ATTR(ARM_MPU_ATTR_MEMORY_(1, 1, 1, 1), ARM_MPU_ATTR_MEMORY_(1, 1, 1, 1)));
ARM_MPU_SetMemAttr(MP_MPU_ATTR_INDEX_NORMAL_WT_RA,
ARM_MPU_ATTR(ARM_MPU_ATTR_MEMORY_(1, 0, 1, 0), ARM_MPU_ATTR_MEMORY_(1, 0, 1, 0)));
ARM_MPU_SetMemAttr(MP_MPU_ATTR_INDEX_NORMAL_NON_CACHEABLE,
ARM_MPU_ATTR(ARM_MPU_ATTR_NON_CACHEABLE, ARM_MPU_ATTR_NON_CACHEABLE));
// Load the MPU regions from the table.
ARM_MPU_Load(0, mpu_table, sizeof(mpu_table) / sizeof(ARM_MPU_Region_t));
}

31
ports/alif/mpu.h Normal file
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@@ -0,0 +1,31 @@
/*
* This file is part of the MicroPython project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2024 OpenMV LLC.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#define MP_MPU_ATTR_INDEX_NORMAL_WT_RA_TRANSIENT (0)
#define MP_MPU_ATTR_INDEX_DEVICE_nGnRE (1)
#define MP_MPU_ATTR_INDEX_NORMAL_WB_RA_WA (2)
#define MP_MPU_ATTR_INDEX_NORMAL_WT_RA (3)
#define MP_MPU_ATTR_INDEX_NORMAL_NON_CACHEABLE (4)