[PATCH 6/7] bsp/aarch64: Starthooks and MMU Sections for Raspberry pi 4B AArch64 BSP
Mohd Noor Aman
nooraman5718 at gmail.com
Thu Sep 22 06:20:42 UTC 2022
This commit add starthooks and MMU files for the BSP. The MMU sections include peripheral, ARM Local regs, FIQs-IRQs, Watchdog, Videocore Timer, System Timer, GIC Timer, EMMC and UART Addresses.
---
bsps/aarch64/raspberrypi/start/bspstart.c | 49 ++++++++
.../aarch64/raspberrypi/start/bspstarthooks.c | 53 ++++++++
bsps/aarch64/raspberrypi/start/bspstartmmu.c | 119 ++++++++++++++++++
3 files changed, 221 insertions(+)
create mode 100644 bsps/aarch64/raspberrypi/start/bspstart.c
create mode 100644 bsps/aarch64/raspberrypi/start/bspstarthooks.c
create mode 100644 bsps/aarch64/raspberrypi/start/bspstartmmu.c
diff --git a/bsps/aarch64/raspberrypi/start/bspstart.c b/bsps/aarch64/raspberrypi/start/bspstart.c
new file mode 100644
index 0000000000..56f52a2231
--- /dev/null
+++ b/bsps/aarch64/raspberrypi/start/bspstart.c
@@ -0,0 +1,49 @@
+/* SPDX-License-Identifier: BSD-2-Clause */
+
+/**
+ * @file
+ *
+ * @ingroup RTEMSBSPsAArch64Raspberrypi4
+ *
+ * @brief BSP Startup
+ */
+
+/*
+ * 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/bootcard.h>
+#include <bsp/irq-generic.h>
+#include <bsp/linker-symbols.h>
+
+void bsp_start( void )
+{
+ bsp_interrupt_initialize();
+ rtems_cache_coherent_add_area(
+ bsp_section_nocacheheap_begin,
+ (uintptr_t) bsp_section_nocacheheap_size
+ );
+}
diff --git a/bsps/aarch64/raspberrypi/start/bspstarthooks.c b/bsps/aarch64/raspberrypi/start/bspstarthooks.c
new file mode 100644
index 0000000000..fe0fe77c09
--- /dev/null
+++ b/bsps/aarch64/raspberrypi/start/bspstarthooks.c
@@ -0,0 +1,53 @@
+/* SPDX-License-Identifier: BSD-2-Clause */
+
+/**
+ * @file
+ *
+ * @ingroup RTEMSBSPsAArch64Raspberrypi4
+ *
+ * @brief BSP Startup Hooks
+ */
+
+/*
+ * 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/irq-generic.h>
+#include <bsp/start.h>
+#include <rtems/score/cpu.h>
+
+BSP_START_TEXT_SECTION void bsp_start_hook_0(void)
+{
+ /* Do nothing */
+}
+
+BSP_START_TEXT_SECTION void bsp_start_hook_1(void)
+{
+ AArch64_start_set_vector_base();
+ bsp_start_copy_sections();
+ raspberrypi_4_setup_mmu_and_cache();
+ bsp_start_clear_bss();
+}
\ No newline at end of file
diff --git a/bsps/aarch64/raspberrypi/start/bspstartmmu.c b/bsps/aarch64/raspberrypi/start/bspstartmmu.c
new file mode 100644
index 0000000000..cdf8b39d2d
--- /dev/null
+++ b/bsps/aarch64/raspberrypi/start/bspstartmmu.c
@@ -0,0 +1,119 @@
+/* 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 ARM_C FIQ and IRQ registers*/
+ .begin = (unsigned)BCM2711_ARMC_REGS_BASE,
+ .end = (unsigned)BCM2711_ARMC_REGS_BASE + (unsigned)BCM2711_ARMC_REGS_SIZE,
+ .flags = AARCH64_MMU_DEVICE
+ },
+
+ { /*RPI Watchdog Timer*/
+ .begin = (unsigned)BCM2711_PM_BASE,
+ .end = (unsigned)BCM2711_PM_BASE + 0x1000U,
+ .flags = AARCH64_MMU_DEVICE
+ },
+
+ { /*RPI GPU System Timer*/
+ .begin = (unsigned)BCM2711_GPU_TIMER_BASE,
+ .end = (unsigned)BCM2711_GPU_TIMER_BASE + 0x200000U,
+ .flags = AARCH64_MMU_DEVICE
+ },
+
+ { /*RPI ARM System Timer*/
+ .begin = (unsigned)BCM2711_TIMER_BASE,
+ .end = (unsigned)BCM2711_TIMER_BASE + 0x200000U,
+ .flags = AARCH64_MMU_DEVICE
+ },
+
+ { /*RPI GIC Timer*/
+ .begin = 0xFF800000U,
+ .end = 0xFFA00000U,
+ .flags = AARCH64_MMU_DEVICE
+ },
+
+ { /*RPI MMC */
+ .begin = 0xFE340000U,
+ .end = 0xFE340000U + 0x200000U,
+ .flags = AARCH64_MMU_DEVICE
+ },
+
+ { /*RPI UART*/
+ .begin = 0xFE200000U,
+ .end = 0xFE200000U,
+ .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();
+}
\ No newline at end of file
--
2.34.1
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