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/* SPDX-License-Identifier: BSD-2-Clause */
/**
* @file
*
* @ingroup RTEMSBSPsAArch64Raspberrypi4
*
* @brief This source file contains the default MMU tables and setup.
*/
/*
* Copyright (C) 2022 Mohd Noor Aman
*
*
* 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.
*
* 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.
*/
#include <bsp.h>
#include <bsp/start.h>
#include <bsp/aarch64-mmu.h>
#include <bsp/raspberrypi.h>
#include <libcpu/mmu-vmsav8-64.h>
BSP_START_DATA_SECTION static const aarch64_mmu_config_entry
raspberrypi_4_mmu_config_table[] = {
AARCH64_MMU_DEFAULT_SECTIONS,
{ /* RPI peripheral address */
.begin = (unsigned)RPI_PERIPHERAL_BASE,
.end = (unsigned)RPI_PERIPHERAL_BASE + (unsigned)RPI_PERIPHERAL_SIZE,
.flags = AARCH64_MMU_DEVICE
},
{ /* RPI ARM local registers */
.begin = (unsigned)BCM2711_LOCAL_REGS_BASE,
.end = (unsigned)BCM2711_LOCAL_REGS_BASE + (unsigned)BCM2711_LOCAL_REGS_SIZE,
.flags = AARCH64_MMU_DEVICE
},
{ /* RPI GIC Interface address */
.begin = 0xFF800000U,
.end = 0xFFA00000U,
.flags = AARCH64_MMU_DEVICE
}
};
/*
* Make weak and let the user override.
*/
BSP_START_TEXT_SECTION void
raspberrypi_4_setup_mmu_and_cache( void ) __attribute__ ((weak));
BSP_START_TEXT_SECTION void
raspberrypi_4_setup_mmu_and_cache( void )
{
aarch64_mmu_setup();
aarch64_mmu_setup_translation_table(
&raspberrypi_4_mmu_config_table[ 0 ],
RTEMS_ARRAY_SIZE( raspberrypi_4_mmu_config_table )
);
aarch64_mmu_enable();
}
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