[PATCH] bsp/leon3_qemu: New BSP variant
Gedare Bloom
gedare at rtems.org
Thu Feb 6 14:35:58 UTC 2014
Thanks Sebastian. Is there some sim-script support or documentation on
using this BSP with Qemu?
On Tue, Feb 4, 2014 at 8:56 AM, Sebastian Huber
<sebastian.huber at embedded-brains.de> wrote:
> ---
> c/src/lib/libbsp/sparc/leon3/Makefile.am | 1 +
> c/src/lib/libbsp/sparc/leon3/amba/amba.c | 4 ++
> c/src/lib/libbsp/sparc/leon3/clock/ckinit.c | 25 ++++++++++++++++
> c/src/lib/libbsp/sparc/leon3/configure.ac | 5 +++
> c/src/lib/libbsp/sparc/leon3/console/console.c | 13 ++++++++
> .../libbsp/sparc/leon3/console/printk_support.c | 30 ++++++++++++++++++++
> .../libbsp/sparc/leon3/make/custom/leon3_qemu.cfg | 9 ++++++
> c/src/lib/libbsp/sparc/leon3/preinstall.am | 4 ++
> .../libbsp/sparc/leon3/startup/linkcmds.leon3_qemu | 12 ++++++++
> 9 files changed, 103 insertions(+), 0 deletions(-)
> create mode 100644 c/src/lib/libbsp/sparc/leon3/make/custom/leon3_qemu.cfg
> create mode 100644 c/src/lib/libbsp/sparc/leon3/startup/linkcmds.leon3_qemu
>
> diff --git a/c/src/lib/libbsp/sparc/leon3/Makefile.am b/c/src/lib/libbsp/sparc/leon3/Makefile.am
> index 1a24cbf..ac97ecc 100644
> --- a/c/src/lib/libbsp/sparc/leon3/Makefile.am
> +++ b/c/src/lib/libbsp/sparc/leon3/Makefile.am
> @@ -26,6 +26,7 @@ project_lib_DATA = start.$(OBJEXT)
> dist_project_lib_DATA += ../shared/startup/linkcmds.base
> dist_project_lib_DATA += startup/linkcmds
> dist_project_lib_DATA += startup/linkcmds.leon3
> +dist_project_lib_DATA += startup/linkcmds.leon3_qemu
> dist_project_lib_DATA += startup/linkcmds.ngmp
>
> noinst_LIBRARIES += libbsp.a
> diff --git a/c/src/lib/libbsp/sparc/leon3/amba/amba.c b/c/src/lib/libbsp/sparc/leon3/amba/amba.c
> index eb7b0f2..c766c76 100644
> --- a/c/src/lib/libbsp/sparc/leon3/amba/amba.c
> +++ b/c/src/lib/libbsp/sparc/leon3/amba/amba.c
> @@ -39,6 +39,7 @@ volatile struct irqmp_regs *LEON3_IrqCtrl_Regs;
>
> void amba_initialize(void)
> {
> +#ifndef LEON3_QEMU
> int icsel;
> struct ambapp_dev *adev;
>
> @@ -90,4 +91,7 @@ void amba_initialize(void)
> ambapp_freq_init(&ambapp_plb, adev,
> (LEON3_Timer_Regs->scaler_reload + 1) * 1000000);
> }
> +#else /* LEON3_QEMU */
> + LEON3_IrqCtrl_Regs = (volatile struct irqmp_regs *)0x80000200;
> +#endif /* LEON3_QEMU */
> }
> diff --git a/c/src/lib/libbsp/sparc/leon3/clock/ckinit.c b/c/src/lib/libbsp/sparc/leon3/clock/ckinit.c
> index e0556ba..695e78d 100644
> --- a/c/src/lib/libbsp/sparc/leon3/clock/ckinit.c
> +++ b/c/src/lib/libbsp/sparc/leon3/clock/ckinit.c
> @@ -55,6 +55,7 @@ static int clkirq;
> #define Adjust_clkirq_for_node() do { clkirq += LEON3_CLOCK_INDEX; } while(0)
> #endif
>
> +#ifndef LEON3_QEMU
> #define Clock_driver_support_find_timer() \
> do { \
> struct ambapp_dev *adev; \
> @@ -71,12 +72,21 @@ static int clkirq;
> Adjust_clkirq_for_node(); \
> } \
> } while (0)
> +#else /* LEON3_QEMU */
> +#define Clock_driver_support_find_timer() \
> + do { \
> + LEON3_Timer_Regs = (volatile struct gptimer_regs *) \
> + 0x80000300; \
> + clkirq = 6; \
> + } while (0)
> +#endif /* LEON3_QEMU */
>
> #define Clock_driver_support_install_isr( _new, _old ) \
> do { \
> _old = set_vector( _new, CLOCK_VECTOR, 1 ); \
> } while(0)
>
> +#ifndef LEON3_QEMU
> #define Clock_driver_support_initialize_hardware() \
> do { \
> LEON3_Timer_Regs->timer[LEON3_CLOCK_INDEX].reload = \
> @@ -86,6 +96,17 @@ static int clkirq;
> LEON3_GPTIMER_EN | LEON3_GPTIMER_RL | \
> LEON3_GPTIMER_LD | LEON3_GPTIMER_IRQEN; \
> } while (0)
> +#else
> +#define Clock_driver_support_initialize_hardware() \
> + do { \
> + LEON3_Timer_Regs->timer[LEON3_CLOCK_INDEX].reload = \
> + 40 * (rtems_configuration_get_microseconds_per_tick() - 1); \
> + \
> + LEON3_Timer_Regs->timer[LEON3_CLOCK_INDEX].ctrl = \
> + LEON3_GPTIMER_EN | LEON3_GPTIMER_RL | \
> + LEON3_GPTIMER_LD | LEON3_GPTIMER_IRQEN; \
> + } while (0)
> +#endif
>
> #define Clock_driver_support_shutdown_hardware() \
> do { \
> @@ -101,7 +122,11 @@ static uint32_t bsp_clock_nanoseconds_since_last_tick(void)
> if ( !LEON3_Timer_Regs )
> return 0;
>
> +#ifndef LEON3_QEMU
> clicks = LEON3_Timer_Regs->timer[LEON3_CLOCK_INDEX].value;
> +#else
> + clicks = LEON3_Timer_Regs->timer[LEON3_CLOCK_INDEX].value / 40;
> +#endif
>
> if ( LEON_Is_interrupt_pending( clkirq ) ) {
> clicks = LEON3_Timer_Regs->timer[LEON3_CLOCK_INDEX].value;
> diff --git a/c/src/lib/libbsp/sparc/leon3/configure.ac b/c/src/lib/libbsp/sparc/leon3/configure.ac
> index dbefd3e..e22f69a 100644
> --- a/c/src/lib/libbsp/sparc/leon3/configure.ac
> +++ b/c/src/lib/libbsp/sparc/leon3/configure.ac
> @@ -26,6 +26,7 @@ RTEMS_BSPOPTS_HELP([CONSOLE_USE_INTERRUPTS],
> Under the simulator (especially when FAST_UART is defined), polled seems to operate
> better.])
>
> +RTEMS_BSPOPTS_SET([SIMSPARC_FAST_IDLE],[*qemu],[1])
> RTEMS_BSPOPTS_SET([SIMSPARC_FAST_IDLE],[*],[])
> RTEMS_BSPOPTS_HELP([SIMSPARC_FAST_IDLE],
> [If defined, speed up the clock ticks while the idle task is running so
> @@ -37,6 +38,10 @@ RTEMS_BSPOPTS_HELP([BSP_LEON3_SMP],
> [Always defined when on a LEON3 to enable the LEON3 support for
> determining the CPU core number in an SMP configuration.])
>
> +RTEMS_BSPOPTS_SET([LEON3_QEMU],[*qemu],[1])
> +RTEMS_BSPOPTS_HELP([LEON3_QEMU],
> +[If defined, then use settings for QEMU simulator.])
> +
> RTEMS_BSP_CLEANUP_OPTIONS(0, 1)
> RTEMS_BSP_LINKCMDS
>
> diff --git a/c/src/lib/libbsp/sparc/leon3/console/console.c b/c/src/lib/libbsp/sparc/leon3/console/console.c
> index 7e72633..4174a71 100644
> --- a/c/src/lib/libbsp/sparc/leon3/console/console.c
> +++ b/c/src/lib/libbsp/sparc/leon3/console/console.c
> @@ -217,6 +217,7 @@ static int leon3_console_set_attributes(int minor, const struct termios *t)
> return 0;
> }
>
> +#ifndef LEON3_QEMU
> /* AMBA PP find routine. Extract AMBA PnP information into data structure. */
> static int find_matching_apbuart(struct ambapp_dev *dev, int index, void *arg)
> {
> @@ -248,6 +249,18 @@ static void leon3_console_scan_uarts(void)
> ambapp_for_each(&ambapp_plb, (OPTIONS_ALL|OPTIONS_APB_SLVS), VENDOR_GAISLER,
> GAISLER_APBUART, find_matching_apbuart, NULL);
> }
> +#else /* LEON3_QEMU */
> +static void leon3_console_scan_uarts(void)
> +{
> + uarts = 1;
> +
> + apbuarts[0].regs = (struct apbuart_regs *)0x80000100;
> +#if CONSOLE_USE_INTERRUPTS
> + apbuarts[0].irq = 3;
> +#endif
> + apbuarts[0].freq_hz = 40000000;
> +}
> +#endif /* LEON3_QEMU */
>
> /*
> * Console Device Driver Entry Points
> diff --git a/c/src/lib/libbsp/sparc/leon3/console/printk_support.c b/c/src/lib/libbsp/sparc/leon3/console/printk_support.c
> index ecc44b6..976d5da 100644
> --- a/c/src/lib/libbsp/sparc/leon3/console/printk_support.c
> +++ b/c/src/lib/libbsp/sparc/leon3/console/printk_support.c
> @@ -25,6 +25,7 @@
> int debug_uart_index __attribute__((weak)) = 0;
> static struct apbuart_regs *dbg_uart = NULL;
>
> +#ifndef LEON3_QEMU
> /* Before UART driver has registered (or when no UART is available), calls to
> * printk that gets to bsp_out_char() will be filling data into the
> * pre_printk_dbgbuf[] buffer, hopefully the buffer can help debugging the
> @@ -75,6 +76,29 @@ int bsp_debug_uart_init(void)
> } else
> return 0;
> }
> +#else
> +int bsp_debug_uart_init(void);
> +
> +static void bsp_out_char(char c);
> +
> +static void leon3_qemu_debug_uart_init(char c)
> +{
> + bsp_debug_uart_init();
> +
> + BSP_output_char = bsp_out_char;
> +
> + bsp_out_char(c);
> +}
> +
> +int bsp_debug_uart_init(void)
> +{
> + dbg_uart = (struct apbuart_regs *)0x80000100;
> + dbg_uart->ctrl |= LEON_REG_UART_CTRL_RE | LEON_REG_UART_CTRL_TE;
> + dbg_uart->status = 0;
> +
> + return 1;
> +}
> +#endif
>
> /*
> * apbuart_outbyte_polled
> @@ -130,12 +154,14 @@ int apbuart_inbyte_nonblocking(struct apbuart_regs *regs)
> /* putchar/getchar for printk */
> static void bsp_out_char(char c)
> {
> +#ifndef LEON3_QEMU
> if (dbg_uart == NULL) {
> /* Local debug buffer when UART driver has not registered */
> pre_printk_dbgbuf[pre_printk_pos++] = c;
> pre_printk_pos = pre_printk_pos & (sizeof(pre_printk_dbgbuf)-1);
> return;
> }
> +#endif
>
> apbuart_outbyte_polled(dbg_uart, c, 1, 1);
> }
> @@ -146,7 +172,11 @@ static void bsp_out_char(char c)
>
> #include <rtems/bspIo.h>
>
> +#ifndef LEON3_QEMU
> BSP_output_char_function_type BSP_output_char = bsp_out_char;
> +#else
> +BSP_output_char_function_type BSP_output_char = leon3_qemu_debug_uart_init;
> +#endif
>
> static int bsp_in_char(void)
> {
> diff --git a/c/src/lib/libbsp/sparc/leon3/make/custom/leon3_qemu.cfg b/c/src/lib/libbsp/sparc/leon3/make/custom/leon3_qemu.cfg
> new file mode 100644
> index 0000000..62ffebc
> --- /dev/null
> +++ b/c/src/lib/libbsp/sparc/leon3/make/custom/leon3_qemu.cfg
> @@ -0,0 +1,9 @@
> +include $(RTEMS_ROOT)/make/custom/default.cfg
> +
> +RTEMS_CPU=sparc
> +
> +RTEMS_CPU_MODEL=leon3
> +
> +CPU_CFLAGS = -mcpu=leon3 -msoft-float
> +
> +CFLAGS_OPTIMIZE_V = -O0 -g
> diff --git a/c/src/lib/libbsp/sparc/leon3/preinstall.am b/c/src/lib/libbsp/sparc/leon3/preinstall.am
> index 0005edd..c3c8199 100644
> --- a/c/src/lib/libbsp/sparc/leon3/preinstall.am
> +++ b/c/src/lib/libbsp/sparc/leon3/preinstall.am
> @@ -81,6 +81,10 @@ $(PROJECT_LIB)/linkcmds.leon3: startup/linkcmds.leon3 $(PROJECT_LIB)/$(dirstamp)
> $(INSTALL_DATA) $< $(PROJECT_LIB)/linkcmds.leon3
> PREINSTALL_FILES += $(PROJECT_LIB)/linkcmds.leon3
>
> +$(PROJECT_LIB)/linkcmds.leon3_qemu: startup/linkcmds.leon3_qemu $(PROJECT_LIB)/$(dirstamp)
> + $(INSTALL_DATA) $< $(PROJECT_LIB)/linkcmds.leon3_qemu
> +PREINSTALL_FILES += $(PROJECT_LIB)/linkcmds.leon3_qemu
> +
> $(PROJECT_LIB)/linkcmds.ngmp: startup/linkcmds.ngmp $(PROJECT_LIB)/$(dirstamp)
> $(INSTALL_DATA) $< $(PROJECT_LIB)/linkcmds.ngmp
> PREINSTALL_FILES += $(PROJECT_LIB)/linkcmds.ngmp
> diff --git a/c/src/lib/libbsp/sparc/leon3/startup/linkcmds.leon3_qemu b/c/src/lib/libbsp/sparc/leon3/startup/linkcmds.leon3_qemu
> new file mode 100644
> index 0000000..1a0e3e5
> --- /dev/null
> +++ b/c/src/lib/libbsp/sparc/leon3/startup/linkcmds.leon3_qemu
> @@ -0,0 +1,12 @@
> +MEMORY {
> + rom : ORIGIN = 0x00000000, LENGTH = 8M
> + ram : ORIGIN = 0x40000000, LENGTH = 64M
> +}
> +
> +_PROM_START = ORIGIN (rom);
> +_PROM_SIZE = LENGTH (rom);
> +
> +_RAM_START = ORIGIN (ram);
> +_RAM_SIZE = LENGTH (ram);
> +
> +INCLUDE linkcmds.base
> --
> 1.7.7
>
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