diff options
Diffstat (limited to 'bsps/aarch64/xilinx-versal/start/bspstartmmu.c')
-rw-r--r-- | bsps/aarch64/xilinx-versal/start/bspstartmmu.c | 77 |
1 files changed, 77 insertions, 0 deletions
diff --git a/bsps/aarch64/xilinx-versal/start/bspstartmmu.c b/bsps/aarch64/xilinx-versal/start/bspstartmmu.c new file mode 100644 index 0000000000..6ab33cc4f1 --- /dev/null +++ b/bsps/aarch64/xilinx-versal/start/bspstartmmu.c @@ -0,0 +1,77 @@ +/* SPDX-License-Identifier: BSD-2-Clause */ + +/** + * @file + * + * @ingroup RTEMSBSPsAArch64XilinxVersal + * + * @brief This source file contains the default MMU tables and setup. + */ + +/* + * Copyright (C) 2021 Gedare Bloom <gedare@rtems.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. + * + * 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> + +BSP_START_DATA_SECTION static const aarch64_mmu_config_entry +versal_mmu_config_table[] = { + AARCH64_MMU_DEFAULT_SECTIONS, + { /* APU GIC */ + .begin = 0xf9000000U, + .end = 0xf90c0000U, + .flags = AARCH64_MMU_DEVICE + }, { /* FPD CSRs */ + .begin = 0xfd000000U, + .end = 0xfe000000U, + .flags = AARCH64_MMU_DEVICE + }, { /* LPD CSRs */ + .begin = 0xfe000000U, + .end = 0xfe800000U, + .flags = AARCH64_MMU_DEVICE + }, { /* LPD IOP CSRs and LPD peripherals */ + .begin = 0xff000000U, + .end = 0xffc00000U, + .flags = AARCH64_MMU_DEVICE + } +}; + +/* + * Make weak and let the user override. + */ +BSP_START_TEXT_SECTION void +versal_setup_mmu_and_cache( void ) __attribute__ ((weak)); + +BSP_START_TEXT_SECTION void +versal_setup_mmu_and_cache( void ) +{ + aarch64_mmu_setup(); + + aarch64_mmu_setup_translation_table_and_enable( + &versal_mmu_config_table[ 0 ], + RTEMS_ARRAY_SIZE( versal_mmu_config_table ) + ); +} |