diff options
Diffstat (limited to 'c/src/lib/libbsp/or1k/generic_or1k')
20 files changed, 1390 insertions, 0 deletions
diff --git a/c/src/lib/libbsp/or1k/generic_or1k/Makefile.am b/c/src/lib/libbsp/or1k/generic_or1k/Makefile.am new file mode 100644 index 0000000000..66df24efe3 --- /dev/null +++ b/c/src/lib/libbsp/or1k/generic_or1k/Makefile.am @@ -0,0 +1,110 @@ +# +# @file +# +# @brief Makefile of LibBSP for the generic_or1k BSP. +# + +ACLOCAL_AMFLAGS = -I ../../../../aclocal + +include $(top_srcdir)/../../../../automake/compile.am + +include_bspdir = $(includedir)/bsp +include_libcpudir = $(includedir)/libcpu + +dist_project_lib_DATA = bsp_specs + +############################################################################### +# Header # +############################################################################### + +include_bsp_HEADERS = +include_HEADERS = include/bsp.h +include_HEADERS += ../../shared/include/tm27.h + +nodist_include_bsp_HEADERS = ../../shared/include/bootcard.h +include_bsp_HEADERS += ../shared/include/linker-symbols.h +include_bsp_HEADERS += ../../../libbsp/shared/include/mm.h +include_bsp_HEADERS += ../../shared/include/utility.h +include_bsp_HEADERS += ../../shared/include/irq-generic.h +include_bsp_HEADERS += ../../shared/include/irq-info.h +include_bsp_HEADERS += ../../shared/include/stackalloc.h +include_bsp_HEADERS += ../../shared/include/uart-output-char.h +include_bsp_HEADERS += ../shared/include/cache_.h +include_bsp_HEADERS += include/irq.h +include_bsp_HEADERS += include/uart.h +include_bsp_HEADERS += include/generic_or1k.h + +nodist_include_HEADERS = ../../shared/include/coverhd.h \ + include/bspopts.h + +############################################################################### +# Data # +############################################################################### + +noinst_LIBRARIES = libbspstart.a + +libbspstart_a_SOURCES = start/start.S + +project_lib_DATA = start.$(OBJEXT) + +project_lib_DATA += startup/linkcmds +project_lib_DATA += ../shared/startup/linkcmds.base + +############################################################################### +# LibBSP # +############################################################################### + +noinst_LIBRARIES += libbsp.a + +libbsp_a_SOURCES = +libbsp_a_CPPFLAGS = +libbsp_a_LIBADD = + +# Startup +libbsp_a_SOURCES += ../../shared/bspreset.c +libbsp_a_SOURCES += startup/bspstart.c + +# Shared +libbsp_a_SOURCES += ../../shared/bootcard.c +libbsp_a_SOURCES += ../../shared/bspclean.c +libbsp_a_SOURCES += ../../shared/bspgetworkarea.c +libbsp_a_SOURCES += ../../shared/bsplibc.c +libbsp_a_SOURCES += ../../shared/bsppost.c +libbsp_a_SOURCES += ../../shared/bsppredriverhook.c +libbsp_a_SOURCES += ../../shared/bsppretaskinghook.c +libbsp_a_SOURCES += ../../shared/gnatinstallhandler.c +libbsp_a_SOURCES += ../../shared/sbrk.c +libbsp_a_SOURCES += ../../shared/src/stackalloc.c + +# Console +libbsp_a_SOURCES += ../../shared/console.c +libbsp_a_SOURCES += ../../shared/console_control.c +libbsp_a_SOURCES += ../../shared/console_read.c +libbsp_a_SOURCES += ../../shared/console_select.c +libbsp_a_SOURCES += ../../shared/console_write.c +libbsp_a_SOURCES += console/console-config.c +libbsp_a_SOURCES += console/uart.c + +# Timer +libbsp_a_SOURCES += timer/timer.c + +# clock +libbsp_a_SOURCES += clock/clockdrv.c ../../../shared/clockdrv_shell.h + +# IRQ +libbsp_a_SOURCES += ../../shared/src/irq-default-handler.c +libbsp_a_SOURCES += ../../shared/src/irq-generic.c +libbsp_a_SOURCES += ../../shared/src/irq-info.c +libbsp_a_SOURCES += irq/irq.c + +# Cache +libbsp_a_LIBADD += ../../../libcpu/@RTEMS_CPU@/shared/cache.rel + +############################################################################### +# Special Rules # +############################################################################### + +DISTCLEANFILES = include/bspopts.h + +include $(srcdir)/preinstall.am +include $(top_srcdir)/../../../../automake/local.am diff --git a/c/src/lib/libbsp/or1k/generic_or1k/README b/c/src/lib/libbsp/or1k/generic_or1k/README new file mode 100644 index 0000000000..015286c208 --- /dev/null +++ b/c/src/lib/libbsp/or1k/generic_or1k/README @@ -0,0 +1,34 @@ +This BSP can run on or1ksim, QEMU, jor1k [1] and OpenRISC supported FPGA boards. + +$ git clone git@github.com:openrisc/or1ksim.git +$ cd or1ksim +$ mkdir builddir_or1ksim +$ cd builddir_or1ksim +$ ../configure --target=or1k-elf --prefix=/opt/or1ksim +$ make all +$ make install +$ export PATH=/opt/or1ksim/bin:$PATH + +Configuration file "sim.cfg" should be provided for complex board +configurations at the current directory (which you run or1ksim from) or at +~/.or1k/ + +The current sim.cfg file that configures or1ksim emulator to RTEMS/or1ksim BSP +is at the same directory as this README. You can also use or1ksim script from +rtems-tools/sim-scripts. + +From command line type: + +$ or1k-elf-sim -f sim.cfg $PATH_TO_RTEMS_EXE + +From QEMU: + +$ qemu-system-or32 -serial mon:stdio -serial /dev/null -net none -nographic \ + -m 128M -kernel $PATH_TO_RTEMS_EXE + +from sim-scripts: + +$ or1ksim $PATH_TO_RTEMS_EXE +$ qemu-or1k $PATH_TO_RTEMS_EXE + +[1] http://s-macke.github.io/jor1k/demos/rtems.html diff --git a/c/src/lib/libbsp/or1k/generic_or1k/bsp_specs b/c/src/lib/libbsp/or1k/generic_or1k/bsp_specs new file mode 100644 index 0000000000..0fcd2dcc11 --- /dev/null +++ b/c/src/lib/libbsp/or1k/generic_or1k/bsp_specs @@ -0,0 +1,11 @@ +%rename endfile old_endfile +%rename startfile old_startfile +%rename link old_link + +*startfile: +%{!qrtems: %(old_startfile)} %{!nostdlib: %{qrtems: \ +%{!qrtems_debug: start.o%s} \ +%{qrtems_debug: start_g.o%s}}} + +*link: +%{!qrtems: %(old_link)} %{qrtems: -dc -dp -N -e _start} diff --git a/c/src/lib/libbsp/or1k/generic_or1k/clock/clockdrv.c b/c/src/lib/libbsp/or1k/generic_or1k/clock/clockdrv.c new file mode 100644 index 0000000000..57e46c1897 --- /dev/null +++ b/c/src/lib/libbsp/or1k/generic_or1k/clock/clockdrv.c @@ -0,0 +1,152 @@ +/** + * @file + * + * @ingroup bsp_clock + * + * @brief or1k clock support. + */ + +/* + * generic_or1k Clock driver + * + * COPYRIGHT (c) 2014-2015 Hesham ALMatary <heshamelmatary@gmail.com> + * + * The license and distribution terms for this file may be + * found in the file LICENSE in this distribution or at + * http://www.rtems.org/license/LICENSE + */ + +#include <rtems.h> +#include <bsp.h> +#include <bsp/irq.h> +#include <bsp/generic_or1k.h> +#include <rtems/score/cpu.h> +#include <rtems/score/or1k-utility.h> + +/* The number of clock cycles before generating a tick timer interrupt. */ +#define TTMR_NUM_OF_CLOCK_TICKS_INTERRUPT 0x09ED9 +#define OR1K_CLOCK_CYCLE_TIME_NANOSECONDS 10 + +/* CPU counter */ +static CPU_Counter_ticks cpu_counter_ticks; + +/* This prototype is added here to Avoid warnings */ +void Clock_isr(void *arg); + +static void generic_or1k_clock_at_tick(void) +{ + uint32_t TTMR; + + /* For TTMR register, + * The least significant 28 bits are the number of clock cycles + * before generating a tick timer interrupt. While the most + * significant 4 bits are used for mode configuration, tick timer + * interrupt enable and pending interrupts status. + */ + TTMR = (CPU_OR1K_SPR_TTMR_MODE_RESTART | CPU_OR1K_SPR_TTMR_IE | + (TTMR_NUM_OF_CLOCK_TICKS_INTERRUPT & CPU_OR1K_SPR_TTMR_TP_MASK) + ) & ~(CPU_OR1K_SPR_TTMR_IP); + + _OR1K_mtspr(CPU_OR1K_SPR_TTMR, TTMR); + _OR1K_mtspr(CPU_OR1K_SPR_TTCR, 0); + + cpu_counter_ticks += TTMR_NUM_OF_CLOCK_TICKS_INTERRUPT; +} + +static void generic_or1k_clock_handler_install( + proc_ptr new_isr, + proc_ptr old_isr +) +{ + rtems_status_code sc = RTEMS_SUCCESSFUL; + old_isr = NULL; + _CPU_ISR_install_vector(OR1K_EXCEPTION_TICK_TIMER, + new_isr, + old_isr); + + if (sc != RTEMS_SUCCESSFUL) { + rtems_fatal_error_occurred(0xdeadbeef); + } +} + +static void generic_or1k_clock_initialize(void) +{ + uint32_t TTMR; + + /* For TTMR register, + * The least significant 28 bits are the number of clock cycles + * before generating a tick timer interrupt. While the most + * significant 4 bits are used for mode configuration, tick timer + * interrupt enable and pending interrupts status. + */ + + /* FIXME: Long interval should pass since initializing the tick timer + * registers fires exceptions dispite interrupts has not been enabled yet. + */ + TTMR = (CPU_OR1K_SPR_TTMR_MODE_RESTART | CPU_OR1K_SPR_TTMR_IE | + (0xFFED9 & CPU_OR1K_SPR_TTMR_TP_MASK) + ) & ~(CPU_OR1K_SPR_TTMR_IP); + + _OR1K_mtspr(CPU_OR1K_SPR_TTMR, TTMR); + _OR1K_mtspr(CPU_OR1K_SPR_TTCR, 0); + + /* Initialize CPU Counter */ + cpu_counter_ticks = 0; +} + + static void generic_or1k_clock_cleanup(void) +{ + uint32_t sr; + + sr = _OR1K_mfspr(CPU_OR1K_SPR_SR); + + /* Disable tick timer exceptions */ + _OR1K_mtspr(CPU_OR1K_SPR_SR, (sr & ~CPU_OR1K_SPR_SR_IEE) + & ~CPU_OR1K_SPR_SR_TEE); + + /* Invalidate tick timer config registers */ + _OR1K_mtspr(CPU_OR1K_SPR_TTCR, 0); + _OR1K_mtspr(CPU_OR1K_SPR_TTMR, 0); +} + +/* + * Return the nanoseconds since last tick + */ +static uint32_t generic_or1k_clock_nanoseconds_since_last_tick(void) +{ + return + TTMR_NUM_OF_CLOCK_TICKS_INTERRUPT * OR1K_CLOCK_CYCLE_TIME_NANOSECONDS; +} + +CPU_Counter_ticks _CPU_Counter_read(void) +{ + uint32_t ticks_since_last_timer_interrupt; + + ticks_since_last_timer_interrupt = _OR1K_mfspr(CPU_OR1K_SPR_TTCR); + + return cpu_counter_ticks + ticks_since_last_timer_interrupt; +} + +CPU_Counter_ticks _CPU_Counter_difference( + CPU_Counter_ticks second, + CPU_Counter_ticks first +) +{ + return second - first; +} +#define Clock_driver_support_at_tick() generic_or1k_clock_at_tick() + +#define Clock_driver_support_initialize_hardware() generic_or1k_clock_initialize() + +#define Clock_driver_support_install_isr(isr, old_isr) \ + do { \ + old_isr = NULL; \ + generic_or1k_clock_handler_install(isr, old_isr); \ + } while (0) + +#define Clock_driver_support_shutdown_hardware() generic_or1k_clock_cleanup() + +#define Clock_driver_nanoseconds_since_last_tick \ + generic_or1k_clock_nanoseconds_since_last_tick + +#include "../../../shared/clockdrv_shell.h" diff --git a/c/src/lib/libbsp/or1k/generic_or1k/configure.ac b/c/src/lib/libbsp/or1k/generic_or1k/configure.ac new file mode 100644 index 0000000000..9d78c44f9e --- /dev/null +++ b/c/src/lib/libbsp/or1k/generic_or1k/configure.ac @@ -0,0 +1,30 @@ +# +# @file +# +# @brief Configure script of LibBSP for generic_or1k BSP. +# + +AC_PREREQ(2.69) +AC_INIT([rtems-c-src-lib-libbsp-or1k-generic],[_RTEMS_VERSION],[https://devel.rtems.org/newticket]) +AC_CONFIG_SRCDIR([bsp_specs]) +RTEMS_TOP(../../../../../..) + +RTEMS_CANONICAL_TARGET_CPU +AM_INIT_AUTOMAKE([no-define nostdinc foreign 1.12.2]) +RTEMS_BSP_CONFIGURE + +RTEMS_BSPOPTS_SET([BSP_START_RESET_VECTOR],[*],[]) +RTEMS_BSPOPTS_HELP([BSP_START_RESET_VECTOR],[reset vector address for BSP start]) + +RTEMS_BSPOPTS_SET([BSP_GENERIC_OR1K_PERIPHCLK],[*],[50000000U]) +RTEMS_BSPOPTS_HELP([BSP_GENERIC_OR1K_PERIPHCLK],[or1k PERIPHCLK clock frequency in Hz]) + +RTEMS_PROG_CC_FOR_TARGET([-ansi -fasm]) +RTEMS_CANONICALIZE_TOOLS +RTEMS_PROG_CCAS + +RTEMS_BSP_CLEANUP_OPTIONS(0, 0) +RTEMS_BSP_LINKCMDS + +AC_CONFIG_FILES([Makefile]) +AC_OUTPUT diff --git a/c/src/lib/libbsp/or1k/generic_or1k/console/console-config.c b/c/src/lib/libbsp/or1k/generic_or1k/console/console-config.c new file mode 100644 index 0000000000..a5b29a9745 --- /dev/null +++ b/c/src/lib/libbsp/or1k/generic_or1k/console/console-config.c @@ -0,0 +1,58 @@ +/** + * @file + * + * @ingroup generic_or1k_uart + * + * @brief Console Configuration. + */ + +/* + * Copyright (c) 2014-2015 Hesham ALMatary + * + * The license and distribution terms for this file may be + * found in the file LICENSE in this distribution or at + * http://www.rtems.org/license/LICENSE + */ + +#include <rtems/bspIo.h> + +#include <libchip/serial.h> + +#include <bspopts.h> +#include <bsp/uart.h> +#include <bsp/generic_or1k.h> + +console_tbl Console_Configuration_Ports [] = { + { + .sDeviceName = "/dev/ttyS0", + .deviceType = SERIAL_CUSTOM, + .pDeviceFns = &generic_or1k_uart_fns, + .deviceProbe = NULL, + .pDeviceFlow = NULL, + .ulCtrlPort1 = OR1K_BSP_UART_BASE, + .ulCtrlPort2 = 0, + .ulClock = OR1K_UART_DEFAULT_BAUD, + .ulIntVector = OR1K_BSP_UART_IRQ + } +}; + +#define PORT_COUNT \ + (sizeof(Console_Configuration_Ports) \ + / sizeof(Console_Configuration_Ports [0])) + +unsigned long Console_Configuration_Count = PORT_COUNT; + +static void output_char(char c) +{ + const console_fns *con = + Console_Configuration_Ports [Console_Port_Minor].pDeviceFns; + + if (c == '\n') { + con->deviceWritePolled((int) Console_Port_Minor, '\r'); + } + con->deviceWritePolled((int) Console_Port_Minor, c); +} + +BSP_output_char_function_type BSP_output_char = output_char; + +BSP_polling_getchar_function_type BSP_poll_char = NULL; diff --git a/c/src/lib/libbsp/or1k/generic_or1k/console/uart.c b/c/src/lib/libbsp/or1k/generic_or1k/console/uart.c new file mode 100644 index 0000000000..6f8a49443d --- /dev/null +++ b/c/src/lib/libbsp/or1k/generic_or1k/console/uart.c @@ -0,0 +1,152 @@ +/** + * @file + * + * @ingroup generic_or1k_uart + * + * @brief UART support. + */ + +/* + * COPYRIGHT (c) 2014-2015 Hesham ALMatary <heshamelmatary@gmail.com> + * + * The license and distribution terms for this file may be + * found in the file LICENSE in this distribution or at + * http://www.rtems.org/license/LICENSE + */ + +#include <libchip/sersupp.h> +#include <bsp/generic_or1k.h> +#include <bsp.h> +#include <bsp/irq.h> +#include <bsp/uart.h> +#include <rtems/score/isr.h> + +static void uart_initialize(int minor); +static int uart_first_open(int major, int minor, void *arg); +static int uart_last_close(int major, int minor, void *arg); +static int uart_read_polled(int minor); +static ssize_t uart_write(int minor, const char *buf, size_t len); +static void uart_write_polled(int minor, char c); +static int uart_set_attributes(int minor, const struct termios *t); + +#if 0 +/* + * These will be useful when the driver supports interrupt driven IO. + */ +static rtems_vector_number uart_get_irq_number(const console_tbl *ct) +{ + return ct->ulIntVector; +} + +static uint32_t uart_get_baud(const console_tbl *ct) +{ + return ct->ulClock; +} +#endif + +static void uart_set_baud(int baud) +{ + uint16_t divisor = (OR1K_BSP_CLOCK_FREQ) / (16 * baud); + OR1K_REG(OR1K_BSP_UART_REG_LINE_CTRL) = + OR1K_BSP_UART_REG_LINE_CTRL_DLAB; + + OR1K_REG(OR1K_BSP_UART_REG_DEV_LATCH_LOW) = divisor & 0xff; + + OR1K_REG(OR1K_BSP_UART_REG_DEV_LATCH_HIGH) = + (divisor >> 8); +} + +static void uart_initialize(int minor) +{ + /* Set baud rate */ + uart_set_baud(OR1K_UART_DEFAULT_BAUD); + + /* Set data pattern configuration */ + OR1K_REG(OR1K_BSP_UART_REG_LINE_CTRL) = + OR1K_BSP_UART_REG_LINE_CTRL_WLEN8; + + /* Reset receiver and transmitter */ + OR1K_REG(OR1K_BSP_UART_REG_FIFO_CTRL) = + OR1K_BSP_UART_REG_FIFO_CTRL_ENABLE_FIFO | + OR1K_BSP_UART_REG_FIFO_CTRL_CLEAR_RCVR | + OR1K_BSP_UART_REG_FIFO_CTRL_TRIGGER_14; + + /* Disable all interrupts */ + OR1K_REG(OR1K_BSP_UART_REG_INT_ENABLE) = 0x00; + +} + +static int uart_first_open(int major, int minor, void *arg) +{ + rtems_libio_open_close_args_t *oc = (rtems_libio_open_close_args_t *) arg; + struct rtems_termios_tty *tty = (struct rtems_termios_tty *) oc->iop->data1; + const console_tbl *ct = Console_Port_Tbl [minor]; + console_data *cd = &Console_Port_Data [minor]; + + cd->termios_data = tty; + rtems_termios_set_initial_baud(tty, ct->ulClock); + + return 0; +} + +static int uart_last_close(int major, int minor, void *arg) +{ + return 0; +} + +static int uart_read_polled(int minor) +{ + unsigned char lsr; + + /* Get a character when avaiable */ + do { + lsr = OR1K_REG(OR1K_BSP_UART_REG_LINE_STATUS); + } while ((lsr & OR1K_BSP_UART_REG_LINE_STATUS_DR) + != OR1K_BSP_UART_REG_LINE_STATUS_DR); + + return OR1K_REG(OR1K_BSP_UART_REG_RX); +} + +static void uart_write_polled(int minor, char c) +{ + unsigned char lsr; + + /* Wait until there is no pending data in the transmitter FIFO (empty) */ + do { + lsr = OR1K_REG(OR1K_BSP_UART_REG_LINE_STATUS); + } while (!(lsr & OR1K_BSP_UART_REG_LINE_STATUS_THRE)); + + OR1K_REG(OR1K_BSP_UART_REG_TX) = c; +} + +static ssize_t uart_write( + int minor, + const char *s, + size_t n +) +{ + ssize_t i = 0; + + for (i = 0; i < n; ++i){ + uart_write_polled(minor, s [i]); + } + + return n; +} + +static int uart_set_attributes(int minor, const struct termios *term) +{ + return -1; +} + +const console_fns generic_or1k_uart_fns = { + .deviceProbe = libchip_serial_default_probe, + .deviceFirstOpen = uart_first_open, + .deviceLastClose = uart_last_close, + .deviceRead = uart_read_polled, + .deviceWrite = uart_write, + .deviceInitialize = uart_initialize, + .deviceWritePolled = uart_write_polled, + .deviceSetAttributes = uart_set_attributes, + .deviceOutputUsesInterrupts = false +}; diff --git a/c/src/lib/libbsp/or1k/generic_or1k/include/bsp.h b/c/src/lib/libbsp/or1k/generic_or1k/include/bsp.h new file mode 100644 index 0000000000..72bb107e55 --- /dev/null +++ b/c/src/lib/libbsp/or1k/generic_or1k/include/bsp.h @@ -0,0 +1,47 @@ +/** + * @file + * + * @ingroup generic_or1k + * + * @brief Global BSP definitions. + */ + +/* + * COPYRIGHT (c) 2014-2015 Hesham ALMatary <heshamelmatary@gmail.com> + * + * The license and distribution terms for this file may be + * found in the file LICENSE in this distribution or at + * http://www.rtems.org/license/LICENSE + */ + +#ifndef LIBBSP_GENERIC_OR1K_H +#define LIBBSP_GENERIC_OR1K_H + +#include <bspopts.h> +#include <rtems.h> +#include <rtems/console.h> +#include <rtems/clockdrv.h> +#include <bsp/generic_or1k.h> + +#include <bsp/default-initial-extension.h> + +#ifdef __cplusplus +extern "C" { +#endif /* __cplusplus */ + +#define BSP_FEATURE_IRQ_EXTENSION + +#ifdef __cplusplus +} +#endif /* __cplusplus */ + +#endif /* LIBBSP_GENERIC_OR1K_H */ + +/** + * @defgroup generic_or1k support + * + * @ingroup bsp_or1k + * + * @brief generic_or1k support package + * + */ diff --git a/c/src/lib/libbsp/or1k/generic_or1k/include/generic_or1k.h b/c/src/lib/libbsp/or1k/generic_or1k/include/generic_or1k.h new file mode 100644 index 0000000000..e4d9760640 --- /dev/null +++ b/c/src/lib/libbsp/or1k/generic_or1k/include/generic_or1k.h @@ -0,0 +1,118 @@ +/** + * @file + * + * @ingroup generic_or1k_reg + * + * @brief Register definitions. + */ + +/* + * COPYRIGHT (c) 2014-2015 Hesham ALMatary <heshamelmatary@gmail.com> + * + * The license and distribution terms for this file may be + * found in the file LICENSE in this distribution or at + * http://www.rtems.org/license/LICENSE + */ + +#ifndef LIBBSP_GENERIC_OR1K_H +#define LIBBSP_GENERIC_OR1K_H + +#include <stdint.h> + +/** + * @defgroup generic_or1k_reg Register Definitions + * + * @ingroup generic_or1k + * + * @brief Shared register definitions for or1k systems. + * + * @{ + */ + +/** + * @name Register Macros + * + * @{ + */ + + #define OR1K_REG(x) (*((volatile unsigned char *) (x))) + #define OR1K_BIT(n) (1 << (n)) + +/** @} */ + +/** + * @name Internal OR1K UART Registers + * + * @{ + */ +#define OR1K_BSP_CLOCK_FREQ 50000000UL +#define OR1K_BSP_UART_BASE 0x90000000 + +#define OR1K_BSP_UART_REG_TX (OR1K_BSP_UART_BASE+0) +#define OR1K_BSP_UART_REG_RX (OR1K_BSP_UART_BASE+0) +#define OR1K_BSP_UART_REG_DEV_LATCH_LOW (OR1K_BSP_UART_BASE+0) +#define OR1K_BSP_UART_REG_DEV_LATCH_HIGH (OR1K_BSP_UART_BASE+1) +#define OR1K_BSP_UART_REG_INT_ENABLE (OR1K_BSP_UART_BASE+1) +#define OR1K_BSP_UART_REG_INT_ID (OR1K_BSP_UART_BASE+2) +#define OR1K_BSP_UART_REG_FIFO_CTRL (OR1K_BSP_UART_BASE+2) +#define OR1K_BSP_UART_REG_LINE_CTRL (OR1K_BSP_UART_BASE+3) +#define OR1K_BSP_UART_REG_MODEM_CTRL (OR1K_BSP_UART_BASE+4) +#define OR1K_BSP_UART_REG_LINE_STATUS (OR1K_BSP_UART_BASE+5) +#define OR1K_BSP_UART_REG_MODEM_STATUS (OR1K_BSP_UART_BASE+6) +#define OR1K_BSP_UART_REG_SCRATCH (OR1K_BSP_UART_BASE+7) + +/* FIFO Control Register */ +#define OR1K_BSP_UART_REG_FIFO_CTRL_TRIGGER_1 (0x00) +#define OR1K_BSP_UART_REG_FIFO_CTRL_ENABLE_FIFO (0x01) +#define OR1K_BSP_UART_REG_FIFO_CTRL_CLEAR_RCVR (0x02) +#define OR1K_BSP_UART_REG_FIFO_CTRL_CLEAR_XMIT (0x03) +#define OR1K_BSP_UART_REG_FIFO_CTRL_DMA_SELECT (0x08) +#define OR1K_BSP_UART_REG_FIFO_CTRL_TRIGGER_4 (0x40) +#define OR1K_BSP_UART_REG_FIFO_CTRL_TRIGGER_8 (0x80) +#define OR1K_BSP_UART_REG_FIFO_CTRL_TRIGGER_14 (0xC0) +#define OR1K_BSP_UART_REG_FIFO_CTRL_TRIGGER_MASK (0xC0) + +/* Line Control Register */ +#define OR1K_BSP_UART_REG_LINE_CTRL_WLEN5 (0x00) +#define OR1K_BSP_UART_REG_LINE_CTRL_WLEN6 (0x01) +#define OR1K_BSP_UART_REG_LINE_CTRL_WLEN7 (0x02) +#define OR1K_BSP_UART_REG_LINE_CTRL_WLEN8 (0x03) +#define OR1K_BSP_UART_REG_LINE_CTRL_STOP (0x04) +#define OR1K_BSP_UART_REG_LINE_CTRL_PARITY (0x08) +#define OR1K_BSP_UART_REG_LINE_CTRL_EPAR (0x10) +#define OR1K_BSP_UART_REG_LINE_CTRL_SPAR (0x20) +#define OR1K_BSP_UART_REG_LINE_CTRL_SBC (0x40) +#define OR1K_BSP_UART_REG_LINE_CTRL_DLAB (0x80) + +/* Line Status Register */ +#define OR1K_BSP_UART_REG_LINE_STATUS_DR (0x01) +#define OR1K_BSP_UART_REG_LINE_STATUS_OE (0x02) +#define OR1K_BSP_UART_REG_LINE_STATUS_PE (0x04) +#define OR1K_BSP_UART_REG_LINE_STATUS_FE (0x08) +#define OR1K_BSP_UART_REG_LINE_STATUS_BI (0x10) +#define OR1K_BSP_UART_REG_LINE_STATUS_THRE (0x20) +#define OR1K_BSP_UART_REG_LINE_STATUS_TEMT (0x40) + +/* Modem Control Register */ +#define OR1K_BSP_UART_REG_MODEM_CTRL_DTR (0x01) +#define OR1K_BSP_UART_REG_MODEM_CTRL_RTS (0x02) +#define OR1K_BSP_UART_REG_MODEM_CTRL_OUT1 (0x04) +#define OR1K_BSP_UART_REG_MODEM_CTRL_OUT2 (0x08) +#define OR1K_BSP_UART_REG_MODEM_CTRL_LOOP (0x10) + +/* Modem Status Register */ +#define OR1K_BSP_UART_REG_MODEM_STATUS_DCTS (0x01) +#define OR1K_BSP_UART_REG_MODEM_STATUS_DDSR (0x02) +#define OR1K_BSP_UART_REG_MODEM_STATUS_TERI (0x04) +#define OR1K_BSP_UART_REG_MODEM_STATUS_DDCD (0x08) +#define OR1K_BSP_UART_REG_MODEM_STATUS_CTS (0x10) +#define OR1K_BSP_UART_REG_MODEM_STATUS_DSR (0x20) +#define OR1K_BSP_UART_REG_MODEM_STATUS_RI (0x40) +#define OR1K_BSP_UART_REG_MODEM_STATUS_DCD (0x80) +#define OR1K_BSP_UART_REG_MODEM_STATUS_ANY_DELTA (0x0F) + +/** @} */ + +/** @} */ + +#endif /* LIBBSP_GENERIC_OR1K_H */ diff --git a/c/src/lib/libbsp/or1k/generic_or1k/include/irq.h b/c/src/lib/libbsp/or1k/generic_or1k/include/irq.h new file mode 100644 index 0000000000..431b250469 --- /dev/null +++ b/c/src/lib/libbsp/or1k/generic_or1k/include/irq.h @@ -0,0 +1,45 @@ +/** + * @file + * + * @ingroup OR1K_IRQ + * + * @brief Interrupt definitions. + */ + +/** + * COPYRIGHT (c) 2014-2015 Hesham ALMatary <heshamelmatary@gmail.com> + * + * The license and distribution terms for this file may be + * found in the file LICENSE in this distribution or at + * http://www.rtems.org/license/LICENSE + */ + +#ifndef LIBBSP_GENERIC_OR1K_IRQ_H +#define LIBBSP_GENERIC_OR1K_IRQ_H + +#ifndef ASM + +#include <rtems.h> +#include <rtems/irq.h> +#include <rtems/irq-extension.h> + +#define BSP_INTERRUPT_VECTOR_MIN 0x100 +#define BSP_INTERRUPT_VECTOR_MAX 0x1F00 + +/* Interrupt Identification Register */ +#define OR1K_BSP_UART_REG_INT_ID_MSI (0x00) +#define OR1K_BSP_UART_REG_INT_ID_NO_INT (0x01) +#define OR1K_BSP_UART_REG_INT_ID_THRI (0x02) +#define OR1K_BSP_UART_REG_INT_ID_RDI (0x04) +#define OR1K_BSP_UART_REG_INT_ID_ID (0x06) +#define OR1K_BSP_UART_REG_INT_ID_RLSI (0x06) +#define OR1K_BSP_UART_REG_INT_ID_TOI (0x0c) + +/* Interrupt Enable Register */ +#define OR1K_BSP_UART_REG_INT_ENABLE_RDI (0x01) +#define OR1K_BSP_UART_REG_INT_ENABLE_THRI (0x02) +#define OR1K_BSP_UART_REG_INT_ENABLE_RLSI (0x04) +#define OR1K_BSP_UART_REG_INT_ENABLE_MSI (0x08) + +#endif /* ASM */ +#endif /* LIBBSP_GENEIRC_OR1K_IRQ_H */ diff --git a/c/src/lib/libbsp/or1k/generic_or1k/include/uart.h b/c/src/lib/libbsp/or1k/generic_or1k/include/uart.h new file mode 100644 index 0000000000..dbf3bbf9ef --- /dev/null +++ b/c/src/lib/libbsp/or1k/generic_or1k/include/uart.h @@ -0,0 +1,42 @@ +/** + * @file + * + * @ingroup generic_or1k_uart + * + * @brief UART support. + */ + +/* + * COPYRIGHT (c) 2014-2015 Hesham ALMatary <heshamelmatary@gmail.com> + * + * The license and distribution terms for this file may be + * found in the file LICENSE in this distribution or at + * http://www.rtems.org/license/LICENSE + */ + +/** + * @defgroup generic_or1k_uart UART Support + * + * @ingroup generic_or1k + * + * @brief Universal Asynchronous Receiver/Transmitter (UART) Support + */ + +#ifndef LIBBSP_GENERIC_OR1K_UART_H +#define LIBBSP_GENERIC_OR1K_UART_H + +#include <libchip/serial.h> + +#ifdef __cplusplus +extern "C" { +#endif /* __cplusplus */ + +#define OR1K_UART_DEFAULT_BAUD 115200 +#define OR1K_BSP_UART_IRQ 2 +extern const console_fns generic_or1k_uart_fns; + +#ifdef __cplusplus +} +#endif /* __cplusplus */ + +#endif /* LIBBSP_GENERIC_OR1K_UART_H */ diff --git a/c/src/lib/libbsp/or1k/generic_or1k/irq/irq.c b/c/src/lib/libbsp/or1k/generic_or1k/irq/irq.c new file mode 100644 index 0000000000..c3c4d6d4a4 --- /dev/null +++ b/c/src/lib/libbsp/or1k/generic_or1k/irq/irq.c @@ -0,0 +1,42 @@ +/** + * @file + * + * @ingroup or1k_interrupt + * + * @brief Interrupt support. + */ + +/* + * Copyright (c) 2014 Hesham ALMatary + * + * The license and distribution terms for this file may be + * found in the file LICENSE in this distribution or at + * http://www.rtems.org/license/LICENSE. + */ + +#include <bsp/irq.h> +#include <bsp/irq-generic.h> + +/* Almost all of the jobs that the following functions should + * do are implemented in cpukit + */ + +void bsp_interrupt_handler_default(rtems_vector_number vector) +{ + printk("spurious interrupt: %u\n", vector); +} + +rtems_status_code bsp_interrupt_facility_initialize() +{ + return 0; +} + +rtems_status_code bsp_interrupt_vector_enable(rtems_vector_number vector) +{ + return 0; +} + +rtems_status_code bsp_interrupt_vector_disable(rtems_vector_number vector) +{ + return 0; +} diff --git a/c/src/lib/libbsp/or1k/generic_or1k/make/custom/generic_or1k-testsuite.tcfg b/c/src/lib/libbsp/or1k/generic_or1k/make/custom/generic_or1k-testsuite.tcfg new file mode 100644 index 0000000000..b8e4a7a74d --- /dev/null +++ b/c/src/lib/libbsp/or1k/generic_or1k/make/custom/generic_or1k-testsuite.tcfg @@ -0,0 +1,5 @@ +# +# generic_or1k RTEMS Test Database. +# + +include: testdata/disable-intrcritical-tests.tcfg diff --git a/c/src/lib/libbsp/or1k/generic_or1k/make/custom/generic_or1k.cfg b/c/src/lib/libbsp/or1k/generic_or1k/make/custom/generic_or1k.cfg new file mode 100644 index 0000000000..fff00ae83b --- /dev/null +++ b/c/src/lib/libbsp/or1k/generic_or1k/make/custom/generic_or1k.cfg @@ -0,0 +1,7 @@ +include $(RTEMS_ROOT)/make/custom/default.cfg + +RTEMS_CPU = or1k + +CPU_CFLAGS = -O2 + +CFLAGS_OPTIMIZE_V ?= -O0 -g diff --git a/c/src/lib/libbsp/or1k/generic_or1k/preinstall.am b/c/src/lib/libbsp/or1k/generic_or1k/preinstall.am new file mode 100644 index 0000000000..f5522be73d --- /dev/null +++ b/c/src/lib/libbsp/or1k/generic_or1k/preinstall.am @@ -0,0 +1,120 @@ +## Automatically generated by ampolish3 - Do not edit + +if AMPOLISH3 +$(srcdir)/preinstall.am: Makefile.am + $(AMPOLISH3) $(srcdir)/Makefile.am > $(srcdir)/preinstall.am +endif + +PREINSTALL_DIRS = +DISTCLEANFILES += $(PREINSTALL_DIRS) + +all-am: $(PREINSTALL_FILES) + +PREINSTALL_FILES = +CLEANFILES = $(PREINSTALL_FILES) + +all-local: $(TMPINSTALL_FILES) + +TMPINSTALL_FILES = +CLEANFILES += $(TMPINSTALL_FILES) + +$(PROJECT_LIB)/$(dirstamp): + @$(MKDIR_P) $(PROJECT_LIB) + @: > $(PROJECT_LIB)/$(dirstamp) +PREINSTALL_DIRS += $(PROJECT_LIB)/$(dirstamp) + +$(PROJECT_INCLUDE)/$(dirstamp): + @$(MKDIR_P) $(PROJECT_INCLUDE) + @: > $(PROJECT_INCLUDE)/$(dirstamp) +PREINSTALL_DIRS += $(PROJECT_INCLUDE)/$(dirstamp) + +$(PROJECT_INCLUDE)/bsp/$(dirstamp): + @$(MKDIR_P) $(PROJECT_INCLUDE)/bsp + @: > $(PROJECT_INCLUDE)/bsp/$(dirstamp) +PREINSTALL_DIRS += $(PROJECT_INCLUDE)/bsp/$(dirstamp) + +$(PROJECT_INCLUDE)/libcpu/$(dirstamp): + @$(MKDIR_P) $(PROJECT_INCLUDE)/libcpu + @: > $(PROJECT_INCLUDE)/libcpu/$(dirstamp) +PREINSTALL_DIRS += $(PROJECT_INCLUDE)/libcpu/$(dirstamp) + +$(PROJECT_LIB)/bsp_specs: bsp_specs $(PROJECT_LIB)/$(dirstamp) + $(INSTALL_DATA) $< $(PROJECT_LIB)/bsp_specs +PREINSTALL_FILES += $(PROJECT_LIB)/bsp_specs + +$(PROJECT_INCLUDE)/bsp.h: include/bsp.h $(PROJECT_INCLUDE)/$(dirstamp) + $(INSTALL_DATA) $< $(PROJECT_INCLUDE)/bsp.h +PREINSTALL_FILES += $(PROJECT_INCLUDE)/bsp.h + +$(PROJECT_INCLUDE)/tm27.h: ../../shared/include/tm27.h $(PROJECT_INCLUDE)/$(dirstamp) + $(INSTALL_DATA) $< $(PROJECT_INCLUDE)/tm27.h +PREINSTALL_FILES += $(PROJECT_INCLUDE)/tm27.h + +$(PROJECT_INCLUDE)/bsp/bootcard.h: ../../shared/include/bootcard.h $(PROJECT_INCLUDE)/bsp/$(dirstamp) + $(INSTALL_DATA) $< $(PROJECT_INCLUDE)/bsp/bootcard.h +PREINSTALL_FILES += $(PROJECT_INCLUDE)/bsp/bootcard.h + +$(PROJECT_INCLUDE)/bsp/linker-symbols.h: ../shared/include/linker-symbols.h $(PROJECT_INCLUDE)/bsp/$(dirstamp) + $(INSTALL_DATA) $< $(PROJECT_INCLUDE)/bsp/linker-symbols.h +PREINSTALL_FILES += $(PROJECT_INCLUDE)/bsp/linker-symbols.h + +$(PROJECT_INCLUDE)/bsp/mm.h: ../../../libbsp/shared/include/mm.h $(PROJECT_INCLUDE)/bsp/$(dirstamp) + $(INSTALL_DATA) $< $(PROJECT_INCLUDE)/bsp/mm.h +PREINSTALL_FILES += $(PROJECT_INCLUDE)/bsp/mm.h + +$(PROJECT_INCLUDE)/bsp/utility.h: ../../shared/include/utility.h $(PROJECT_INCLUDE)/bsp/$(dirstamp) + $(INSTALL_DATA) $< $(PROJECT_INCLUDE)/bsp/utility.h +PREINSTALL_FILES += $(PROJECT_INCLUDE)/bsp/utility.h + +$(PROJECT_INCLUDE)/bsp/irq-generic.h: ../../shared/include/irq-generic.h $(PROJECT_INCLUDE)/bsp/$(dirstamp) + $(INSTALL_DATA) $< $(PROJECT_INCLUDE)/bsp/irq-generic.h +PREINSTALL_FILES += $(PROJECT_INCLUDE)/bsp/irq-generic.h + +$(PROJECT_INCLUDE)/bsp/irq-info.h: ../../shared/include/irq-info.h $(PROJECT_INCLUDE)/bsp/$(dirstamp) + $(INSTALL_DATA) $< $(PROJECT_INCLUDE)/bsp/irq-info.h +PREINSTALL_FILES += $(PROJECT_INCLUDE)/bsp/irq-info.h + +$(PROJECT_INCLUDE)/bsp/stackalloc.h: ../../shared/include/stackalloc.h $(PROJECT_INCLUDE)/bsp/$(dirstamp) + $(INSTALL_DATA) $< $(PROJECT_INCLUDE)/bsp/stackalloc.h +PREINSTALL_FILES += $(PROJECT_INCLUDE)/bsp/stackalloc.h + +$(PROJECT_INCLUDE)/bsp/uart-output-char.h: ../../shared/include/uart-output-char.h $(PROJECT_INCLUDE)/bsp/$(dirstamp) + $(INSTALL_DATA) $< $(PROJECT_INCLUDE)/bsp/uart-output-char.h +PREINSTALL_FILES += $(PROJECT_INCLUDE)/bsp/uart-output-char.h + +$(PROJECT_INCLUDE)/bsp/cache_.h: ../shared/include/cache_.h $(PROJECT_INCLUDE)/bsp/$(dirstamp) + $(INSTALL_DATA) $< $(PROJECT_INCLUDE)/bsp/cache_.h +PREINSTALL_FILES += $(PROJECT_INCLUDE)/bsp/cache_.h + +$(PROJECT_INCLUDE)/bsp/irq.h: include/irq.h $(PROJECT_INCLUDE)/bsp/$(dirstamp) + $(INSTALL_DATA) $< $(PROJECT_INCLUDE)/bsp/irq.h +PREINSTALL_FILES += $(PROJECT_INCLUDE)/bsp/irq.h + +$(PROJECT_INCLUDE)/bsp/uart.h: include/uart.h $(PROJECT_INCLUDE)/bsp/$(dirstamp) + $(INSTALL_DATA) $< $(PROJECT_INCLUDE)/bsp/uart.h +PREINSTALL_FILES += $(PROJECT_INCLUDE)/bsp/uart.h + +$(PROJECT_INCLUDE)/bsp/generic_or1k.h: include/generic_or1k.h $(PROJECT_INCLUDE)/bsp/$(dirstamp) + $(INSTALL_DATA) $< $(PROJECT_INCLUDE)/bsp/generic_or1k.h +PREINSTALL_FILES += $(PROJECT_INCLUDE)/bsp/generic_or1k.h + +$(PROJECT_INCLUDE)/coverhd.h: ../../shared/include/coverhd.h $(PROJECT_INCLUDE)/$(dirstamp) + $(INSTALL_DATA) $< $(PROJECT_INCLUDE)/coverhd.h +PREINSTALL_FILES += $(PROJECT_INCLUDE)/coverhd.h + +$(PROJECT_INCLUDE)/bspopts.h: include/bspopts.h $(PROJECT_INCLUDE)/$(dirstamp) + $(INSTALL_DATA) $< $(PROJECT_INCLUDE)/bspopts.h +PREINSTALL_FILES += $(PROJECT_INCLUDE)/bspopts.h + +$(PROJECT_LIB)/start.$(OBJEXT): start.$(OBJEXT) $(PROJECT_LIB)/$(dirstamp) + $(INSTALL_DATA) $< $(PROJECT_LIB)/start.$(OBJEXT) +TMPINSTALL_FILES += $(PROJECT_LIB)/start.$(OBJEXT) + +$(PROJECT_LIB)/linkcmds: startup/linkcmds $(PROJECT_LIB)/$(dirstamp) + $(INSTALL_DATA) $< $(PROJECT_LIB)/linkcmds +TMPINSTALL_FILES += $(PROJECT_LIB)/linkcmds + +$(PROJECT_LIB)/linkcmds.base: ../shared/startup/linkcmds.base $(PROJECT_LIB)/$(dirstamp) + $(INSTALL_DATA) $< $(PROJECT_LIB)/linkcmds.base +TMPINSTALL_FILES += $(PROJECT_LIB)/linkcmds.base + diff --git a/c/src/lib/libbsp/or1k/generic_or1k/sim.cfg b/c/src/lib/libbsp/or1k/generic_or1k/sim.cfg new file mode 100644 index 0000000000..1032f0d4ce --- /dev/null +++ b/c/src/lib/libbsp/or1k/generic_or1k/sim.cfg @@ -0,0 +1,105 @@ +section memory + name = "RAM" + random_seed = 12345 + type = random + ce = 0 + mc = 0 + baseaddr = 0x00000000 + size = 0x08000000 + delayr = 1 + delayw = 2 +end + +section immu + enabled = 0 + nsets = 64 + nways = 1 + pagesize = 8192 + hitdelay = 0 + missdelay = 0 +end + +section dmmu + enabled = 0 + nsets = 64 + nways = 1 + pagesize = 8192 + hitdelay = 0 + missdelay = 0 +end +section mc + enabled = 0 + baseaddr = 0x90000000 + POC = 0x0000000a /* 32 bit SSRAM */ + index = 0 +end + +section ic + enabled = 1 + nsets = 256 + nways = 1 + blocksize = 32 + hitdelay = 20 + missdelay = 60 +end + +section dc + enabled = 1 + nsets = 256 + nways = 1 + blocksize = 32 + load_hitdelay = 40 + load_missdelay = 120 + store_hitdelay = 40 + store_missdelay = 120 +end + +section pic + enabled = 1 + edge_trigger = 1 +end + +section sim + verbose = 1 + debug = 0 + profile = 0 + history = 0 + clkcycle = 10ns /* 100MHz clock */ +end + +section VAPI + enabled = 1 + server_port = 50000 + log_enabled = 1 + vapi_log_file = "vapi.log" +end + +section cpu + ver = 0x12 + cfg = 0x00 + rev = 0x0001 + upr = 0x0000075f + superscalar = 0 + hazards = 0 + dependstats = 0 + sbuf_len = 100 +end + +section debug + enabled = 1 + rsp_enabled = 1 + rsp_port = 50001 +end + +section uart + enabled = 1 + baseaddr = 0x90000000 + #channel = "xterm" + channel = "file:uart0.rx,uart0.tx" + irq = 2 + 16550 = 1 +end + +section pm + enabled = 1 +end diff --git a/c/src/lib/libbsp/or1k/generic_or1k/start/start.S b/c/src/lib/libbsp/or1k/generic_or1k/start/start.S new file mode 100644 index 0000000000..d951a552c7 --- /dev/null +++ b/c/src/lib/libbsp/or1k/generic_or1k/start/start.S @@ -0,0 +1,182 @@ +/* + * Copyright (c) 2014-2015 Hesham ALMatary <heshamelmatary@gmail.com> + * + * The license and distribution terms for this file may be + * found in the file LICENSE in this distribution or at + * http://www.rtems.org/license/LICENSE + */ +#include <bsp/linker-symbols.h> + +/* The following macro defines the first instructions every exception + * should execute before jumping to its handler function from the + * exception vector table. r3 is saved into the stack and loaded with + * vector number before jumping to _ISR_Handler. r3 value is restored + * back from _ISR_Handler after handling the exception and before + * returning from interrupt. + */ +#define EXCEPTION_SETUP(vector) \ + l.nop ;\ + l.addi r1, r1, -200 ;\ + l.sw 0(r1), r3; \ + l.addi r3, r0, vector; \ + l.j _ISR_Handler; \ + l.nop + + .extern bsp_start + .extern boot_card + .extern bsp_section_bss_begin + .extern bsp_section_bss_end + + .extern bsp_start_vector_table_end + .extern bsp_start_vector_table_size + .extern bsp_vector_table_size + .extern bsp_section_stack_begin + + .extern exception_frame_save + .extern _OR1K_Exception_Process + .extern _OR1K_Exception_default + .extern rtems_clock_tick + .extern _exit + .extern printk + .extern bsp_interrupt_handler_default + + /* Global symbols */ + .global _start + .global bsp_start_vector_table_begin + +/* Popualte HW vector table */ + +.section .vector, "ax" + +.org 0x100 +_reset: + l.j _start + l.nop + +.org 0x200 +_buserr: + EXCEPTION_SETUP(2) + +.org 0x300 +_dPageFault: + EXCEPTION_SETUP(3) + +.org 0x400 +_iPageFaule: + EXCEPTION_SETUP(4) + +.org 0x500 +_timer: + EXCEPTION_SETUP(5) + +.org 0x600 +_unalign: + EXCEPTION_SETUP(6) + +.org 0x700 +_undefIns: + EXCEPTION_SETUP(7) + +.org 0x800 +_exInt: + EXCEPTION_SETUP(8) + +.org 0x900 +_dTLB: + EXCEPTION_SETUP(9) + +.org 0xA00 +_iTLB: + EXCEPTION_SETUP(10) + +.org 0xB00 +_range: + EXCEPTION_SETUP(11) + +.org 0xC00 +_syscall: + EXCEPTION_SETUP(12) + +.org 0xD00 +_fp: + EXCEPTION_SETUP(13) + +.org 0xE00 +_trap: + EXCEPTION_SETUP(14) + +.org 0xF00 +_undef1: + EXCEPTION_SETUP(15) + +.org 0x1500 +_undef2: + EXCEPTION_SETUP(16) + +.org 0x1900 +_undef3: + EXCEPTION_SETUP(17) + +.org 0x1F00 + +bsp_start_vector_table_begin: + + .word 0 + .word _start /* Reset */ + .word _OR1K_Exception_default /* Bus Error */ + .word _OR1K_Exception_default /* Data Page Fault */ + .word _OR1K_Exception_default /* Instruction Page Fault */ + .word _OR1K_Exception_default /* Tick timer */ + .word _OR1K_Exception_default /* Alignment */ + .word _OR1K_Exception_default /* Undefiend Instruction */ + .word _OR1K_Exception_default /* External Interrupt */ + .word _OR1K_Exception_default /* Data TLB Miss */ + .word _OR1K_Exception_default /* Instruction TLB Miss */ + .word _OR1K_Exception_default /* Range Exception */ + .word _OR1K_Exception_default /* System Call */ + .word _OR1K_Exception_default /* Floating Point Exception */ + .word _OR1K_Exception_default /* Trap */ + .word _OR1K_Exception_default /* Reserver for future use */ + .word _OR1K_Exception_default /* Reserved for implementation-specific */ + .word _OR1K_Exception_default /* Reserved for custom exceptions. */ + +bsp_start_vector_table_end: + + .section ".bsp_start_text", "ax" + .type _start,@function + +_start: + /* Set SR register to Supervision mode */ + l.ori r1, r0, 0x1 + l.mtspr r0, r1, 17 + + /* load stack and frame pointers */ + l.movhi r1, hi(bsp_section_stack_begin) + l.ori r1, r1, lo(bsp_section_stack_begin) + l.add r2, r0, r1 + +/* Clearing .bss */ + l.movhi r13, hi(bsp_section_bss_begin) + l.ori r13, r13, lo(bsp_section_bss_begin) + l.movhi r15, hi(bsp_section_bss_end) + l.ori r15, r15, lo(bsp_section_bss_end) + +_loop_clear_bss: + l.sfgeu r13, r15 + l.bf _end_clear_bss + l.addi r13, r13, 4 + l.sw 0(r13), r0 + l.j _loop_clear_bss + l.nop +_end_clear_bss: + + l.j boot_card + l.nop + +/* Temporary code for unhandled exceptions */ +.section .text +.align +.global _unhandled_exception + +unhandled_exception: + l.nop diff --git a/c/src/lib/libbsp/or1k/generic_or1k/startup/bspstart.c b/c/src/lib/libbsp/or1k/generic_or1k/startup/bspstart.c new file mode 100644 index 0000000000..2bf417a044 --- /dev/null +++ b/c/src/lib/libbsp/or1k/generic_or1k/startup/bspstart.c @@ -0,0 +1,25 @@ +/** + * @file + * + * @ingroup generic_or1k + * + * @brief Benchmark timer support. + */ + +/* + * Copyright (c) 2014-2015 by Hesham ALMatary + * + * The license and distribution terms for this file may be + * found in the file LICENSE in this distribution or at + * http://www.rtems.org/license/LICENSE + */ + +#include <bsp.h> +#include <bsp/bootcard.h> +#include <libcpu/cache.h> + +void bsp_start( void ) +{ + _CPU_cache_enable_instruction(); + _CPU_cache_enable_data(); +} diff --git a/c/src/lib/libbsp/or1k/generic_or1k/startup/linkcmds b/c/src/lib/libbsp/or1k/generic_or1k/startup/linkcmds new file mode 100644 index 0000000000..cef99d36d0 --- /dev/null +++ b/c/src/lib/libbsp/or1k/generic_or1k/startup/linkcmds @@ -0,0 +1,41 @@ +/** + * @file + * + * @ingroup bsp_linker + * + * @brief Memory map + */ + +/* + * COPYRIGHT (c) 2014 Hesham ALMatary <heshamelmatary@gmail.com> + * + * The license and distribution terms for this file may be + * found in the file LICENSE in this distribution or at + * http://www.rtems.org/license/LICENSE + */ + +MEMORY + { + VECTOR_RAM (AIW) : ORIGIN = 0x0 , LENGTH = 8260 + RAM : org = 0x00002048, l = 0x1FFDFB8 + UNEXPECTED_SECTIONS : ORIGIN = 0xffffffff, LENGTH = 0 + } + +REGION_ALIAS ("REGION_START", RAM); +REGION_ALIAS ("REGION_VECTOR", VECTOR_RAM); +REGION_ALIAS ("REGION_TEXT", RAM); +REGION_ALIAS ("REGION_TEXT_LOAD", RAM); +REGION_ALIAS ("REGION_RODATA", RAM); +REGION_ALIAS ("REGION_RODATA_LOAD", RAM); +REGION_ALIAS ("REGION_DATA", RAM); +REGION_ALIAS ("REGION_DATA_LOAD", RAM); +REGION_ALIAS ("REGION_FAST_DATA", RAM); +REGION_ALIAS ("REGION_FAST_DATA_LOAD", RAM); +REGION_ALIAS ("REGION_BSS", RAM); +REGION_ALIAS ("REGION_WORK", RAM); +REGION_ALIAS ("REGION_STACK", RAM); + +bsp_section_vector_begin = 0; +bsp_section_stack_begin = 0x1FFDFB8; + +INCLUDE linkcmds.base diff --git a/c/src/lib/libbsp/or1k/generic_or1k/timer/timer.c b/c/src/lib/libbsp/or1k/generic_or1k/timer/timer.c new file mode 100644 index 0000000000..872f1af7be --- /dev/null +++ b/c/src/lib/libbsp/or1k/generic_or1k/timer/timer.c @@ -0,0 +1,64 @@ +/** + * @file + * + * @ingroup generic_or1k + * + * @brief Benchmark timer support. + */ + +/* + * Copyright (c) 2014-2015 by Hesham ALMatary + * + * The license and distribution terms for this file may be + * found in the file LICENSE in this distribution or at + * http://www.rtems.org/license/LICENSE + */ + +#include <rtems.h> +#include <rtems/btimer.h> +#include <bsp/generic_or1k.h> +#include <rtems/score/or1k-utility.h> + +#define OR1K_NANOSECONDS_PER_CLK_CYCLE 10 + +static bool benchmark_timer_find_average_overhead = false; +static uint64_t benchmark_timer_base; + +void benchmark_timer_initialize(void) +{ + benchmark_timer_base = _OR1K_mfspr(CPU_OR1K_SPR_TTCR); +} + +#define AVG_OVERHEAD 0 +#define LEAST_VALID 1 + +benchmark_timer_t benchmark_timer_read( void ) +{ + uint64_t clicks; + uint64_t total; + uint64_t delta; + /* + * Read the timer and see how many clicks (clock cycles) + * has passed since timer initialization. + */ + clicks = _OR1K_mfspr(CPU_OR1K_SPR_TTCR); + + delta = clicks - benchmark_timer_base; + + /* total in nanoseconds */ + total = OR1K_NANOSECONDS_PER_CLK_CYCLE * (delta); + + if ( benchmark_timer_find_average_overhead == true ) + return total; /* in nanoseconds microsecond units */ + else { + if ( total < LEAST_VALID ) + return 0; /* below timer resolution */ + + return (total - AVG_OVERHEAD); + } +} + +void benchmark_timer_disable_subtracting_average_overhead(bool find_flag) +{ + benchmark_timer_find_average_overhead = find_flag; +} |