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-rw-r--r--bsps/microblaze/shared/cache/cache.c36
-rw-r--r--bsps/microblaze/shared/dev/serial/uartlite.c159
-rw-r--r--bsps/microblaze/shared/dev/serial/uartlite_l.c99
-rw-r--r--bsps/microblaze/shared/fdt/microblaze-fdt-support.c106
-rw-r--r--bsps/microblaze/shared/start/start.S124
5 files changed, 524 insertions, 0 deletions
diff --git a/bsps/microblaze/shared/cache/cache.c b/bsps/microblaze/shared/cache/cache.c
new file mode 100644
index 0000000000..472f3c04f4
--- /dev/null
+++ b/bsps/microblaze/shared/cache/cache.c
@@ -0,0 +1,36 @@
+/* SPDX-License-Identifier: BSD-2-Clause */
+
+/**
+ * @file
+ *
+ * @ingroup RTEMSBSPsMicroblaze
+ *
+ * @brief MicroBlaze cache support
+ */
+
+/*
+ * Copyright (C) 2021 On-Line Applications Research Corporation (OAR)
+ *
+ * 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 "../../../bsps/shared/cache/cacheimpl.h"
diff --git a/bsps/microblaze/shared/dev/serial/uartlite.c b/bsps/microblaze/shared/dev/serial/uartlite.c
new file mode 100644
index 0000000000..611c339371
--- /dev/null
+++ b/bsps/microblaze/shared/dev/serial/uartlite.c
@@ -0,0 +1,159 @@
+/* SPDX-License-Identifier: BSD-2-Clause */
+
+/**
+ * @file
+ *
+ * @ingroup RTEMSBSPsMicroblaze
+ *
+ * @brief MicroBlaze AXI UART Lite support
+ */
+
+/*
+ * Copyright (C) 2021 On-Line Applications Research Corporation (OAR)
+ *
+ * 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/irq.h>
+#include <dev/serial/uartlite.h>
+#include <bspopts.h>
+
+#ifdef BSP_MICROBLAZE_FPGA_CONSOLE_INTERRUPTS
+static void microblaze_uart_interrupt( void *arg )
+{
+ rtems_termios_tty *tty = arg;
+ uart_lite_context *ctx = rtems_termios_get_device_context( tty );
+
+ while ( !XUartLite_IsReceiveEmpty( ctx->address ) ) {
+ char c = (char) XUartLite_ReadReg( ctx->address, XUL_RX_FIFO_OFFSET );
+ rtems_termios_enqueue_raw_characters( tty, &c, 1 );
+ }
+
+ if ( ctx->transmitting && XUartLite_IsTransmitEmpty( ctx->address ) ) {
+ size_t sent = ctx->tx_queued;
+ ctx->transmitting = false;
+ ctx->tx_queued = 0;
+ rtems_termios_dequeue_characters( tty, sent );
+ }
+}
+#endif
+
+static bool uart_first_open(
+ struct rtems_termios_tty *tty,
+ rtems_termios_device_context *base,
+ struct termios *term,
+ rtems_libio_open_close_args_t *args
+)
+{
+ uart_lite_context *ctx = (uart_lite_context *) base;
+#ifdef BSP_MICROBLAZE_FPGA_CONSOLE_INTERRUPTS
+ rtems_status_code sc;
+#endif
+
+ rtems_termios_set_initial_baud( tty, ctx->initial_baud );
+
+#ifdef BSP_MICROBLAZE_FPGA_CONSOLE_INTERRUPTS
+ XUartLite_EnableIntr( ctx->address );
+
+ sc = rtems_interrupt_handler_install(
+ ctx->irq,
+ "UART",
+ RTEMS_INTERRUPT_SHARED,
+ microblaze_uart_interrupt,
+ tty
+ );
+ if ( sc != RTEMS_SUCCESSFUL ) {
+ return false;
+ }
+
+ ctx->tty = tty;
+#endif
+
+ return true;
+}
+
+static void uart_last_close(
+ rtems_termios_tty *tty,
+ rtems_termios_device_context *base,
+ rtems_libio_open_close_args_t *args
+)
+{
+#ifdef BSP_MICROBLAZE_FPGA_CONSOLE_INTERRUPTS
+ rtems_interrupt_handler_remove( 1, microblaze_uart_interrupt, tty );
+#endif
+}
+
+#ifndef BSP_MICROBLAZE_FPGA_CONSOLE_INTERRUPTS
+static int uart_read_polled( rtems_termios_device_context *base )
+{
+ uart_lite_context *ctx = (uart_lite_context *) base;
+
+ if ( XUartLite_IsReceiveEmpty( ctx->address ) ) {
+ return -1;
+ }
+
+ return XUartLite_ReadReg( ctx->address, XUL_RX_FIFO_OFFSET );
+}
+#endif
+
+static void uart_write(
+ rtems_termios_device_context *base,
+ const char *s,
+ size_t n
+)
+{
+ uart_lite_context *ctx = (uart_lite_context *) base;
+
+#ifdef BSP_MICROBLAZE_FPGA_CONSOLE_INTERRUPTS
+ if ( n > 0 ) {
+ size_t remaining = n;
+ const char *p = &s[0];
+
+ while (!XUartLite_IsTransmitFull( ctx->address ) && remaining > 0) {
+ XUartLite_SendByte( ctx->address, *p );
+ p++;
+ remaining--;
+ }
+
+ ctx->transmitting = true;
+ ctx->tx_queued = n - remaining;
+ }
+#else
+ size_t i = 0;
+
+ for ( i = 0; i < n; ++i ) {
+ XUartLite_SendByte( ctx->address, s[i] );
+ }
+#endif
+}
+
+const rtems_termios_device_handler microblaze_uart_fns = {
+ .first_open = uart_first_open,
+ .last_close = uart_last_close,
+ .write = uart_write,
+#ifdef BSP_MICROBLAZE_FPGA_CONSOLE_INTERRUPTS
+ .mode = TERMIOS_IRQ_DRIVEN
+#else
+ .poll_read = uart_read_polled,
+ .mode = TERMIOS_POLLED
+#endif
+};
diff --git a/bsps/microblaze/shared/dev/serial/uartlite_l.c b/bsps/microblaze/shared/dev/serial/uartlite_l.c
new file mode 100644
index 0000000000..5acbd6c505
--- /dev/null
+++ b/bsps/microblaze/shared/dev/serial/uartlite_l.c
@@ -0,0 +1,99 @@
+/******************************************************************************
+* Copyright (C) 2002 - 2020 Xilinx, Inc. All rights reserved.
+* SPDX-License-Identifier: MIT
+******************************************************************************/
+
+/****************************************************************************/
+/**
+*
+* @file xuartlite_l.c
+* @addtogroup uartlite_v3_5
+* @{
+*
+* This file contains low-level driver functions that can be used to access the
+* device. The user should refer to the hardware device specification for more
+* details of the device operation.
+
+* <pre>
+* MODIFICATION HISTORY:
+*
+* Ver Who Date Changes
+* ----- ---- -------- -----------------------------------------------
+* 1.00b rpm 04/25/02 First release
+* 1.12a rpm 07/16/07 Fixed arg type for RecvByte
+* 2.00a ktn 10/20/09 The macros have been renamed to remove _m from the name.
+* 3.2 sk 11/10/15 Used UINTPTR instead of u32 for Baseaddress CR# 867425.
+* Changed the prototypes of XUartLite_SendByte,
+* XUartLite_RecvByte APIs.
+* </pre>
+*
+******************************************************************************/
+
+/***************************** Include Files *********************************/
+
+#ifndef __rtems__
+#include "xuartlite_l.h"
+#else
+#include <dev/serial/uartlite_l.h>
+#endif /* __rtems__ */
+
+/************************** Constant Definitions *****************************/
+
+
+/**************************** Type Definitions *******************************/
+
+
+/***************** Macros (Inline Functions) Definitions *********************/
+
+
+/************************** Function Prototypes ******************************/
+
+
+/************************** Variable Prototypes ******************************/
+
+
+/****************************************************************************/
+/**
+*
+* This functions sends a single byte using the UART. It is blocking in that it
+* waits for the transmitter to become non-full before it writes the byte to
+* the transmit register.
+*
+* @param BaseAddress is the base address of the device
+* @param Data is the byte of data to send
+*
+* @return None.
+*
+* @note None.
+*
+******************************************************************************/
+void XUartLite_SendByte(UINTPTR BaseAddress, u8 Data)
+{
+ while (XUartLite_IsTransmitFull(BaseAddress));
+
+ XUartLite_WriteReg(BaseAddress, XUL_TX_FIFO_OFFSET, Data);
+}
+
+
+/****************************************************************************/
+/**
+*
+* This functions receives a single byte using the UART. It is blocking in that
+* it waits for the receiver to become non-empty before it reads from the
+* receive register.
+*
+* @param BaseAddress is the base address of the device
+*
+* @return The byte of data received.
+*
+* @note None.
+*
+******************************************************************************/
+u8 XUartLite_RecvByte(UINTPTR BaseAddress)
+{
+ while (XUartLite_IsReceiveEmpty(BaseAddress));
+
+ return (u8)XUartLite_ReadReg(BaseAddress, XUL_RX_FIFO_OFFSET);
+}
+
+/** @} */ \ No newline at end of file
diff --git a/bsps/microblaze/shared/fdt/microblaze-fdt-support.c b/bsps/microblaze/shared/fdt/microblaze-fdt-support.c
new file mode 100644
index 0000000000..b1d8d186c4
--- /dev/null
+++ b/bsps/microblaze/shared/fdt/microblaze-fdt-support.c
@@ -0,0 +1,106 @@
+/* SPDX-License-Identifier: BSD-2-Clause */
+
+/*
+ * Copyright (C) 2022 On-Line Applications Research Corporation (OAR)
+ *
+ * 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 <bspopts.h>
+#include <bsp/microblaze-fdt-support.h>
+#include <bsp/fdt.h>
+
+#include <libfdt.h>
+
+#ifdef BSP_START_COPY_FDT_FROM_U_BOOT
+/* use external dtb provided by u-boot */
+#include <sys/param.h>
+
+#ifndef BSP_FDT_BLOB_SIZE_MAX
+#define BSP_FDT_BLOB_SIZE_MAX 0
+#endif
+
+static RTEMS_ALIGNED(8) uint32_t
+system_dtb[BSP_FDT_BLOB_SIZE_MAX / sizeof(uint32_t)];
+
+void bsp_fdt_copy(const void *src)
+{
+ const volatile uint32_t *s = (const uint32_t *) src;
+ uint32_t *d = RTEMS_DECONST(uint32_t *, &system_dtb[0]);
+
+ if (s != d) {
+ size_t m = MIN(sizeof(system_dtb), fdt_totalsize(src));
+ size_t aligned_size = roundup2(m, CPU_CACHE_LINE_BYTES);
+ size_t n = (m + sizeof(*d) - 1) / sizeof(*d);
+ size_t i;
+
+ for (i = 0; i < n; ++i) {
+ d[i] = s[i];
+ }
+
+ rtems_cache_flush_multiple_data_lines(d, aligned_size);
+ }
+}
+#endif /* BSP_START_COPY_FDT_FROM_U_BOOT */
+
+#ifdef BSP_MICROBLAZE_FPGA_USE_FDT
+#ifndef BSP_START_COPY_FDT_FROM_U_BOOT
+/* use internal bsp dtb */
+#include BSP_MICROBLAZE_FPGA_DTB_HEADER_PATH
+#endif /* BSP_START_COPY_FDT_FROM_U_BOOT */
+
+const void *bsp_fdt_get(void)
+{
+ return system_dtb;
+}
+
+uint32_t bsp_fdt_map_intr(const uint32_t *intr, size_t icells)
+{
+ return intr[0];
+}
+#endif /* BSP_MICROBLAZE_FPGA_USE_FDT */
+
+uint32_t try_get_prop_from_device_tree(
+ const char *compatible,
+ const char *prop_name,
+ uint32_t default_value
+)
+{
+ uint32_t value = default_value;
+
+#ifdef BSP_MICROBLAZE_FPGA_USE_FDT
+ const void *fdt = bsp_fdt_get();
+ int node = fdt_node_offset_by_compatible( fdt, -1, compatible );
+ if ( node < 0 ) {
+ return default_value;
+ }
+
+ const uint32_t *prop = fdt_getprop( fdt, node, prop_name, NULL );
+ if ( prop == NULL ) {
+ return default_value;
+ }
+
+ value = fdt32_to_cpu( prop[0] );
+#endif /* BSP_MICROBLAZE_FPGA_USE_FDT */
+
+ return value;
+}
diff --git a/bsps/microblaze/shared/start/start.S b/bsps/microblaze/shared/start/start.S
new file mode 100644
index 0000000000..e9aaa706e5
--- /dev/null
+++ b/bsps/microblaze/shared/start/start.S
@@ -0,0 +1,124 @@
+/* SPDX-License-Identifier: BSD-3-Clause */
+
+/* Copyright (c) 2001, 2009 Xilinx, Inc. All rights reserved.
+
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions are
+ met:
+
+ 1. Redistributions 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.
+
+ 3. Neither the name of Xilinx nor the names of its contributors may be
+ used to endorse or promote products derived from this software without
+ specific prior written permission.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER 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
+ HOLDER 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.
+
+
+ XMD load *.elf error:
+ MicroBlaze Vector Map for standalone executables
+
+ Address Vector type Label
+ ------- ----------- ------
+
+ # 0x00 # (-- IMM --)
+ # 0x04 # Reset _start1
+
+ # 0x08 # (-- IMM --)
+ # 0x0c # Software Exception _exception_handler
+
+ # 0x10 # (-- IMM --)
+ # 0x14 # Hardware Interrupt _interrupt_handler
+
+ # 0x18 # (-- IMM --)
+ # 0x1C # Breakpoint Exception _debug_sw_break_handler
+
+ # 0x20 # (-- IMM --)
+ # 0x24 # Hardware Exception _hw_exception_handler
+
+*/
+
+
+ .globl _start
+ .section .vectors.reset, "ax"
+ .align 2
+ .ent _start
+ .type _start, @function
+_start:
+ brai _start1
+ .end _start
+
+ .section .vectors.sw_exception, "ax"
+ .align 2
+_vector_sw_exception:
+ brai _exception_handler
+
+ .section .vectors.interrupt, "ax"
+ .align 2
+_vector_interrupt:
+ brai _interrupt_handler
+
+ .section .vectors.debug_sw_break, "ax"
+ .align 2
+_vector_debug_sw_break:
+ brai _debug_sw_break_handler
+
+ .section .vectors.hw_exception, "ax"
+ .align 2
+_vector_hw_exception:
+/*
+ * Hardware and software exceptions are handled identically with the MSR[EiP]
+ * bit differentiating them and determining which register should be used for
+ * return.
+ */
+ brai _exception_handler
+
+ .section .text
+ .globl _start1
+ .align 2
+ .ent _start1
+ .type _start1, @function
+_start1:
+ //la r13, r0, _SDA_BASE_ /* Set the Small Data Anchors and the stack pointer */
+ //la r2, r0, _SDA2_BASE_
+ la r1, r0, _ISR_Stack_area_end-16 /* 16 bytes (4 words are needed by crtinit for args and link reg */
+
+ brlid r15, _crtinit /* Initialize BSS and run program */
+ nop
+
+#ifndef __rtems__
+ brlid r15, exit /* Call exit with the return value of main */
+ addik r5, r3, 0
+#endif /* __rtems__ */
+
+ /* Control does not reach here */
+ .end _start1
+
+#ifndef __rtems__
+/*
+ _exit
+ Our simple _exit
+*/
+ .globl _exit
+ .align 2
+ .ent _exit
+ .type _exit, @function
+_exit:
+ bri 0
+ .end _exit
+#endif /* __rtems__ */
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