[PATCH v4] Raspberrypi: updated the console interface.

Niteesh gsnb.gn at gmail.com
Tue Dec 31 15:57:36 UTC 2019


I tried the above thing it doesn't work :(
Maybe lets stop with this. And try to get RTEMS working on rpi3
this way, it will also be easier for me to work. Did you take a look at what
caused the secondary cpu's not to halt? Is there something that I can do?
Or shall we continue with this? I kind of feel lost and not at all happy
with my progress.

On Tue, Dec 31, 2019 at 8:29 PM Niteesh <gsnb.gn at gmail.com> wrote:

> I have an idea to debug this, but not sure whether it will work or not, I
> could
> run raspbian on versatilepb using arm1176 as cpu and 256mb ram
> this is very much similar to raspi1, I think this one also uses pl011, I
> remember
> seeing it in the linux bootup msgs.
> I could run the examples using qemu using raspi2 as the machine but the dtb
> file never gets passed to it. The register r2 is 0.
> qemu-system-arm -M raspi2 -m 1G -kernel fileio.exe -serial mon:stdio
> -nographic -dtb bcm2709-rpi-2-b.dtb -S -s
> This is the command I use to run my examples and connect to gdb.
>
> On Tue, Dec 31, 2019 at 7:31 PM Christian Mauderer <list at c-mauderer.de>
> wrote:
>
>> On 31/12/2019 14:56, Niteesh wrote:
>> > If moving uart_probe to output char, then should I move
>> > rtems_device_handler_install to console_initialize because, my guess
>> > is that the IO initialization system would not be initialized properly
>> > at that stage.
>>
>> The uart_probe in the output char function should do a really minimal
>> initialization. Only what is necessary to get the polled uart working.
>> That one will only be called if you have an exception at a very early
>> stage. In that case you are working in an exception context.
>>
>> >
>> > When I rename the register_arm_pl011 to init_context_pl011 since it's is
>> > only initializing
>> > the pl011 context, rather than registering it.
>> >
>> > On Tue, Dec 31, 2019 at 6:32 PM Christian Mauderer <list at c-mauderer.de
>> > <mailto:list at c-mauderer.de>> wrote:
>> >
>> >     On 31/12/2019 13:22, Niteesh wrote:
>> >     > It works now, the functions are getting called when used with
>> >     fileio.exe.
>> >     > The function bsp_start wants to print information about the board,
>> >
>> >     That print maybe should be moved to a later point. It just fetches
>> some
>> >     information and prints it. It doesn't even do anything usefull
>> >     besides that.
>> >
>> >     > but
>> >     > the console
>> >     > initialization function is called after bsp_start, assuming that
>> >     the FDT
>> >     > works it still
>> >     > crash since the console still isn't initialized, one way of fixing
>> >     this
>> >     > would be to add uart_probe into
>> >     > output_char just like in imx, or we could move the printing to
>> >     somewhere
>> >     > else.
>> >
>> >     That might would be a good idea regardless whether the print is
>> moved or
>> >     not. It would allow an early exception to print anything.
>> >
>> >     >
>> >     > On Tue, Dec 31, 2019 at 4:08 PM Christian Mauderer
>> >     <list at c-mauderer.de <mailto:list at c-mauderer.de>
>> >     > <mailto:list at c-mauderer.de <mailto:list at c-mauderer.de>>> wrote:
>> >     >
>> >     >
>> >     >
>> >     >     On 31/12/2019 11:37, Christian Mauderer wrote:
>> >     >     > On 31/12/2019 06:11, Niteesh wrote:
>> >     >     >> On Tue, Dec 31, 2019 at 1:13 AM Christian Mauderer
>> >     >     <list at c-mauderer.de <mailto:list at c-mauderer.de>
>> >     <mailto:list at c-mauderer.de <mailto:list at c-mauderer.de>>
>> >     >     >> <mailto:list at c-mauderer.de <mailto:list at c-mauderer.de>
>> >     <mailto:list at c-mauderer.de <mailto:list at c-mauderer.de>>>> wrote:
>> >     >     >>
>> >     >     >>     On 30/12/2019 19:32, Niteesh wrote:
>> >     >     >>     > Just to make sure that console_initialize and
>> uart_probe
>> >     >     are being
>> >     >     >>     > called, I manually initialized the pl011 context to
>> print
>> >     >     something on
>> >     >     >>     > serial. But they never got called. Can you just make
>> sure
>> >     >     that if I am
>> >     >     >>     > missing something?
>> >     >     >>
>> >     >     >>     I don't think that you are missing something but the
>> >     >     executable is
>> >     >     >>     missing something: The functions are not linked into
>> it.
>> >     >     >>
>> >     >     >>     C linker can be an odd thing: It links only object
>> >     files that are
>> >     >     >>     referenced. You seem to have no reference to
>> >     >     console-config.c/o from
>> >     >     >>     anywhere else.
>> >     >     >>
>> >     >     >>     RTEMS_SYSINIT_ITEM(
>> >     >     >>       uart_probe,
>> >     >     >>       RTEMS_SYSINIT_BSP_START,
>> >     >     >>       RTEMS_SYSINIT_ORDER_LAST
>> >     >     >>     );
>> >     >     >>
>> >     >     >>     will be only added to the linker set if the file is
>> >     linked in
>> >     >     anyway.
>> >     >     >>
>> >     >     >>     That is a bit anoying. For the imx BSP there is a UART
>> >     drain
>> >     >     function
>> >     >     >>     that is called from somewhere else. Thats enough to
>> >     bring the
>> >     >     file in.
>> >     >     >>
>> >     >     >>     I think you'll need to add a reference from somewhere
>> >     or move
>> >     >     that stuff
>> >     >     >>     into another file that is referenced.
>> >     >     >>
>> >     >     >>     If you have some init function that has to be called in
>> >     every
>> >     >     case you
>> >     >     >>     can call it from some other c file where it would fit
>> too.
>> >     >     >>
>> >     >     >>     Otherwise it might is necessary to construct some odd
>> >     stuff.
>> >     >     I'm not
>> >     >     >>     sure whether we already had a case like this. Most
>> >     likely it
>> >     >     would be
>> >     >     >>     necessary to use a RTEMS_LINKER_ROSET_ITEM_REFERENCE
>> >     for the
>> >     >     >>     SYSINIT_ITEM. Maybe to define a new
>> >     >     RTEMS_SYSINIT_ITEM_REFERENCE or
>> >     >     >>     simmilar. This should be definitively a separate
>> commit.
>> >     >     Please ask
>> >     >     >>     again if you have to go that way.
>> >     >     >>
>> >     >     >> I didn't understand the above part. So what I did was
>> >     created a dummy
>> >     >     >> function in console-config.c
>> >     >     >> and referenced in places that I know we're going to be
>> >     called. But
>> >     >     >> still, it didn't work.
>> >     >     >>
>> >     >     >
>> >     >     > That's a really mean bug to find:
>> >     >     >
>> >     >     > 1. My assumption was wrong. The file is linked in. Most
>> >     likely due to
>> >     >     > BSP_output_char which is defined in this file.
>> >     >     >
>> >     >     > 2. Please remove console-termios-init.c. It would define the
>> >     same
>> >     >     > console_initialize() function.
>> >     >
>> >     >     Just to be clear: Remove it from the
>> >     >     c/src/lib/libbsp/arm/raspberrypi/Makefile.am file.
>> >     >
>> >     >     >
>> >     >     > 3. The real proble just caused a warning which was a bit
>> >     hard to spot:
>> >     >     > The compile doesn't know RTEMS_SYSINIT_ITEM. It thinks it's
>> >     a function
>> >     >     > body and warns that it defaults the return type to int. In
>> other
>> >     >     words:
>> >     >     > You missed to include <rtems/sysinit.h>. If you add that the
>> >     >     > RTEMS_SYSINIT_ITEM works and uart_probe is linked in.
>> >     >     >
>> >     >     > 4. console_initialize is still not used. It is really hard
>> >     to spot
>> >     >     why:
>> >     >     > Most of the tests only use the configuration:
>> >     >     >
>> >     >     >     CONFIGURE_APPLICATION_NEEDS_SIMPLE_CONSOLE_DRIVER
>> >     >     >
>> >     >     > This is a simplified polled console driver. From the samples
>> >     only
>> >     >     > capture, fileio and pppd are using the normal console with:
>> >     >     >
>> >     >     >     CONFIGURE_APPLICATION_NEEDS_CONSOLE_DRIVER
>> >     >     >
>> >     >     > So only for these three the console_initialize will be
>> called.
>> >     >     >
>> >     >     > By the way: You can use objdump to analyze your elf-files.
>> >     For example
>> >     >     > to get a symbol table use:
>> >     >     >
>> >     >     >     arm-rtems5-objdump -t path/to/ticker.exe
>> >     >     >
>> >     >     > To get the disassembled code with intermixed c-sources use
>> >     >     >
>> >     >     >     arm-rtems5-objdump -dS path/to/ticker.exe
>> >     >     >
>> >     >     > That's very usefull to find whether a symbol is linked in or
>> >     not.
>> >     >     >
>> >     >     >>
>> >     >     >>
>> >     >     >>     >
>> >     >     >>     > While going through the messages from devel-request,
>> Joel
>> >     >     mentioned
>> >     >     >>     > about qemu4 rsb package
>> >     >     >>     > how is it different from the official qemu?
>> >     >     >>     >
>> >     >     >>     > On Mon, Dec 30, 2019 at 11:53 PM G S Niteesh
>> >     >     <gsnb.gn at gmail.com <mailto:gsnb.gn at gmail.com>
>> >     <mailto:gsnb.gn at gmail.com <mailto:gsnb.gn at gmail.com>>
>> >     >     >>     <mailto:gsnb.gn at gmail.com <mailto:gsnb.gn at gmail.com>
>> >     <mailto:gsnb.gn at gmail.com <mailto:gsnb.gn at gmail.com>>>
>> >     >     >>     > <mailto:gsnb.gn at gmail.com <mailto:gsnb.gn at gmail.com>
>> >     <mailto:gsnb.gn at gmail.com <mailto:gsnb.gn at gmail.com>>
>> >     >     <mailto:gsnb.gn at gmail.com <mailto:gsnb.gn at gmail.com>
>> >     <mailto:gsnb.gn at gmail.com <mailto:gsnb.gn at gmail.com>>>>> wrote:
>> >     >     >>     >
>> >     >     >>     >     The patch updates the older console interface
>> used by
>> >     >     the BSP,
>> >     >     >>     >     to newer one. It also replaces the custom
>> >     usart(PL011)
>> >     >     driver
>> >     >     >>     >     with arm-pl011. The fb function's signatures
>> >     where also
>> >     >     changed
>> >     >     >>     >     to accommodate with interface update.
>> >     >     >>     >     Update #3034
>> >     >     >>     >     ---
>> >     >     >>     >      bsps/arm/raspberrypi/console/console-config.c |
>> 186
>> >     >     >>     ++++++++++++++----
>> >     >     >>     >      bsps/arm/raspberrypi/console/console_select.c |
>> 114
>> >     >     -----------
>> >     >     >>     >      bsps/arm/raspberrypi/console/fbcons.c
>>  |  78
>> >     >     ++++----
>> >     >     >>     >      bsps/arm/raspberrypi/console/usart.c          |
>> 167
>> >     >     >>     ----------------
>> >     >     >>     >      bsps/arm/raspberrypi/include/bsp/fbcons.h     |
>> >     21 +-
>> >     >     >>     >      .../arm/raspberrypi/include/bsp/raspberrypi.h |
>> >     48 ++---
>> >     >     >>     >      bsps/arm/raspberrypi/include/bsp/usart.h      |
>> >      5 +-
>> >     >     >>     >      c/src/lib/libbsp/arm/raspberrypi/Makefile.am  |
>> >      8 +-
>> >     >     >>     >      8 files changed, 220 insertions(+), 407
>> deletions(-)
>> >     >     >>     >      delete mode 100644
>> >     >     bsps/arm/raspberrypi/console/console_select.c
>> >     >     >>     >      delete mode 100644
>> >     bsps/arm/raspberrypi/console/usart.c
>> >     >     >>     >
>> >     >     >>     >     diff --git
>> >     a/bsps/arm/raspberrypi/console/console-config.c
>> >     >     >>     >     b/bsps/arm/raspberrypi/console/console-config.c
>> >     >     >>     >     index d2186c918b..021428ff4b 100644
>> >     >     >>     >     ---
>> a/bsps/arm/raspberrypi/console/console-config.c
>> >     >     >>     >     +++
>> b/bsps/arm/raspberrypi/console/console-config.c
>> >     >     >>     >     @@ -19,50 +19,164 @@
>> >     >     >>     >       */
>> >     >     >>     >
>> >     >     >>     >      #include <rtems/bspIo.h>
>> >     >     >>     >     +#include <rtems/console.h>
>> >     >     >>     >
>> >     >     >>     >     -#include <libchip/serial.h>
>> >     >     >>     >
>> >     >     >>     >     -#include <bspopts.h>
>> >     >     >>     >     -#include <bsp/irq.h>
>> >     >     >>     >     -#include <bsp/usart.h>
>> >     >     >>     >     +#include <bsp.h>
>> >     >     >>     >      #include <bsp/raspberrypi.h>
>> >     >     >>     >     +#include <bsp/usart.h>
>> >     >     >>     >     +#include <bsp/arm-pl011.h>
>> >     >     >>     >      #include <bsp/fbcons.h>
>> >     >     >>     >     +#include <bsp/console-termios.h>
>> >     >     >>     >     +#include <bsp/fdt.h>
>> >     >     >>     >     +#include <bsp/fatal.h>
>> >     >     >>     >     +
>> >     >     >>     >     +#include <bspopts.h>
>> >     >     >>     >     +
>> >     >     >>     >     +#include <libfdt.h>
>> >     >     >>     >     +#include <libchip/serial.h>
>> >     >     >>     >     +
>> >     >     >>     >     +arm_pl011_context pl011_context;
>> >     >     >>     >     +rpi_fb_context fb_context;
>> >     >     >>
>> >     >     >>     These could be static.
>> >     >     >>
>> >     >     >>     >     +
>> >     >     >>     >     +static void output_char_serial(char c)
>> >     >     >>     >     +{
>> >     >     >>     >     +  arm_pl011_write_polled(&pl011_context.base,
>> c);
>> >     >     >>     >     +}
>> >     >     >>     >     +
>> >     >     >>     >     +void output_char_fb(char c)
>> >     >     >>     >     +{
>> >     >     >>     >     +  fbcons_write_polled(&fb_context.base, c);
>> >     >     >>     >     +}
>> >     >     >>     >
>> >     >     >>     >     -console_tbl Console_Configuration_Ports [] = {
>> >     >     >>     >     -    {
>> >     >     >>     >     -      .sDeviceName = "/dev/ttyS0",
>> >     >     >>     >     -      .deviceType = SERIAL_CUSTOM,
>> >     >     >>     >     -      .pDeviceFns = &bcm2835_usart_fns,
>> >     >     >>     >     -      .deviceProbe = NULL,
>> >     >     >>     >     -      .pDeviceFlow = NULL,
>> >     >     >>     >     -      .ulCtrlPort1 = BCM2835_UART0_BASE,
>> >     >     >>     >     -      .ulCtrlPort2 = 0,
>> >     >     >>     >     -      .ulClock = USART0_DEFAULT_BAUD,
>> >     >     >>     >     -      .ulIntVector = BCM2835_IRQ_ID_UART
>> >     >     >>     >     -    },
>> >     >     >>     >     -    {
>> >     >     >>     >     -      .sDeviceName ="/dev/fbcons",
>> >     >     >>     >     -      .deviceType = SERIAL_CUSTOM,
>> >     >     >>     >     -      .pDeviceFns = &fbcons_fns,
>> >     >     >>     >     -      .deviceProbe = fbcons_probe,
>> >     >     >>     >     -      .pDeviceFlow = NULL,
>> >     >     >>     >     -    },
>> >     >     >>     >     -};
>> >     >     >>     >     -
>> >     >     >>     >     -#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)
>> >     >     >>     >     +
>> >     >     >>     >     +static void *get_reg_of_node(const void *fdt,
>> >     int node)
>> >     >     >>     >      {
>> >     >     >>     >     -  const console_fns *con =
>> >     >     >>     >     -    Console_Configuration_Ports
>> >     >     [Console_Port_Minor].pDeviceFns;
>> >     >     >>     >     +  int len;
>> >     >     >>     >     +  const uint32_t *val;
>> >     >     >>     >     +
>> >     >     >>     >     +  val = fdt_getprop(fdt, node, "reg", &len);
>> >     >     >>     >     +  if (val == NULL || len < 4) {
>> >     >     >>     >     +    return NULL;
>> >     >     >>     >     +  }
>> >     >     >>     >
>> >     >     >>     >     -  con->deviceWritePolled((int)
>> >     Console_Port_Minor, c);
>> >     >     >>     >     +  return (void *) fdt32_to_cpu(val[0]);
>> >     >     >>     >      }
>> >     >     >>     >
>> >     >     >>     >     -BSP_output_char_function_type BSP_output_char =
>> >     >     output_char;
>> >     >     >>     >     +static void register_arm_pl011(
>> >     >     >>     >     +  const void *fdt,
>> >     >     >>     >     +  const char *serial
>> >     >     >>     >     +)
>> >     >     >>     >     +{
>> >     >     >>     >     +  arm_pl011_context *ctx = &pl011_context;
>> >     >     >>     >     +  int node;
>> >     >     >>     >     +
>> >     >     >>     >     +  if (strcmp(serial, "uart0") == 0) {
>> >     >     >>     >     +
>> >     >     >>     >     +
>> >     >     rtems_termios_device_context_initialize(&ctx->base, "UART");
>> >     >     >>     >     +    node = fdt_path_offset(fdt, serial);
>> >     >     >>     >     +    ctx->regs = get_reg_of_node(fdt, node);
>> >     >     >>     >     +  }
>> >     >     >>     >     +
>> >     >     >>     >     +  rtems_termios_device_install(
>> >     >     >>     >     +    "/dev/ttyuart0",
>> >     >     >>     >     +    &arm_pl011_fns,
>> >     >     >>     >     +    NULL,
>> >     >     >>     >     +    &pl011_context.base
>> >     >     >>     >     +  );
>> >     >     >>     >     +}
>> >     >     >>     >     +
>> >     >     >>     >     +static void register_fb( void )
>> >     >     >>     >     +{
>> >     >     >>     >     +  if (fbcons_probe(&fb_context.base) == true) {
>> >     >     >>     >     +    rtems_termios_device_install(
>> >     >     >>     >     +      "/dev/fbcons",
>> >     >     >>     >     +      &fbcons_fns,
>> >     >     >>     >     +      NULL,
>> >     >     >>     >     +      &fb_context.base);
>> >     >     >>     >     +  }
>> >     >     >>     >     +}
>> >     >     >>     >     +
>> >     >     >>     >     +static void console_select( const char *console
>> )
>> >     >     >>     >     +{
>> >     >     >>     >     +  const char *opt;
>> >     >     >>     >     +
>> >     >     >>     >     +  opt = rpi_cmdline_get_arg("--console=");
>> >     >     >>     >     +
>> >     >     >>     >     +  if ( opt ) {
>> >     >     >>     >     +    if ( strncmp( opt, "fbcons", sizeof(
>> >     "fbcons" ) -
>> >     >     1 ) ==
>> >     >     >>     0 ) {
>> >     >     >>     >     +      if ( rpi_video_is_initialized() > 0 ) {
>> >     >     >>     >     +        BSP_output_char = output_char_fb;
>> >     >     >>     >     +        link("/dev/fbcons",
>> CONSOLE_DEVICE_NAME);
>> >     >     >>     >     +      }
>> >     >     >>     >     +    }else{
>> >     >     >>     >     +
>> >     >     >>     >     +      if ( console == NULL ){
>> >     >     >>     >     +        bsp_fatal( BSP_FATAL_CONSOLE_NO_DEV );
>> >     >     >>     >     +      }
>> >     >     >>     >     +      BSP_output_char = output_char_serial;
>> >     >     >>     >     +      link("/dev/ttyuart0",
>> CONSOLE_DEVICE_NAME);
>> >     >     >>     >     +    }
>> >     >     >>     >     +  }
>> >     >     >>     >     +}
>> >     >     >>     >     +
>> >     >     >>     >     +static void uart_probe(void)
>> >     >     >>     >     +{
>> >     >     >>     >     +  const void *fdt;
>> >     >     >>     >     +  const char *console;
>> >     >     >>     >     +  int node;
>> >     >     >>     >     +
>> >     >     >>     >     +  fdt = bsp_fdt_get();
>> >     >     >>     >     +  node = fdt_path_offset(fdt, "/chosen");
>> >     >     >>     >     +
>> >     >     >>     >     +  console = fdt_getprop(fdt, node,
>> >     "stdout-path", NULL);
>> >     >     >>     >     +
>> >     >     >>     >     +  node = fdt_path_offset(fdt, "/aliases");
>> >     >     >>     >     +
>> >     >     >>     >     +  int offset = fdt_first_property_offset(fdt,
>> node);
>> >     >     >>     >     +
>> >     >     >>     >     +  while (offset >= 0) {
>> >     >     >>     >     +    const struct fdt_property *prop;
>> >     >     >>     >     +
>> >     >     >>     >     +    prop = fdt_get_property_by_offset(fdt,
>> >     offset, NULL);
>> >     >     >>     >     +
>> >     >     >>     >     +    if (prop != NULL) {
>> >     >     >>     >     +      const char *name;
>> >     >     >>     >     +
>> >     >     >>     >     +      name = fdt_string(fdt,
>> >     fdt32_to_cpu(prop->nameoff));
>> >     >     >>     >     +      if(strstr(name, "serial") != NULL) {
>> >     >     >>     >     +        const char *serial;
>> >     >     >>     >     +        serial = prop->data;
>> >     >     >>     >     +
>> >     >     >>     >     +        register_arm_pl011(fdt, serial);
>> >     >     >>     >     +      }
>> >     >     >>     >     +    }
>> >     >     >>     >     +
>> >     >     >>     >     +    offset = fdt_next_property_offset(fdt,
>> offset);
>> >     >     >>     >     +  }
>> >     >     >>     >     +  console_select(console);
>> >     >     >>     >     +}
>> >     >     >>     >     +
>> >     >     >>     >     +
>> >     >     >>     >     +rtems_status_code console_initialize(
>> >     >     >>     >     +  rtems_device_major_number major,
>> >     >     >>     >     +  rtems_device_minor_number minor,
>> >     >     >>     >     +  void *arg
>> >     >     >>     >     +)
>> >     >     >>     >     +{
>> >     >     >>     >     +  rtems_termios_initialize();
>> >     >     >>     >     +  uart_probe();
>> >     >     >>     >     +  register_fb();
>> >     >     >>     >     +
>> >     >     >>     >     +  return RTEMS_SUCCESSFUL;
>> >     >     >>     >     +}
>> >     >     >>     >     +
>> >     >     >>     >     +BSP_output_char_function_type BSP_output_char =
>> >     >     >>     output_char_serial;
>> >     >     >>     >
>> >     >     >>     >      BSP_polling_getchar_function_type BSP_poll_char
>> >     = NULL;
>> >     >     >>     >     +
>> >     >     >>     >     +RTEMS_SYSINIT_ITEM(
>> >     >     >>     >     +  uart_probe,
>> >     >     >>     >     +  RTEMS_SYSINIT_BSP_START,
>> >     >     >>     >     +  RTEMS_SYSINIT_ORDER_LAST
>> >     >     >>     >     +);
>> >     >     >>     >     \ No newline at end of file
>> >     >     >>     >     diff --git
>> >     a/bsps/arm/raspberrypi/console/console_select.c
>> >     >     >>     >     b/bsps/arm/raspberrypi/console/console_select.c
>> >     >     >>     >     deleted file mode 100644
>> >     >     >>     >     index bd246ca868..0000000000
>> >     >     >>     >     ---
>> a/bsps/arm/raspberrypi/console/console_select.c
>> >     >     >>     >     +++ /dev/null
>> >     >     >>     >     @@ -1,114 +0,0 @@
>> >     >     >>     >     -/**
>> >     >     >>     >     - * @file
>> >     >     >>     >     - *
>> >     >     >>     >     - * @ingroup raspberrypi_console
>> >     >     >>     >     - *
>> >     >     >>     >     - * @brief console select
>> >     >     >>     >     - */
>> >     >     >>     >     -
>> >     >     >>     >     -/*
>> >     >     >>     >     - * Copyright (c) 2015 Yang Qiao
>> >     >     >>     >     - *
>> >     >     >>     >     - *  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/fatal.h>
>> >     >     >>     >     -#include <rtems/libio.h>
>> >     >     >>     >     -#include <stdlib.h>
>> >     >     >>     >     -#include <string.h>
>> >     >     >>     >     -#include <assert.h>
>> >     >     >>     >     -#include <termios.h>
>> >     >     >>     >     -
>> >     >     >>     >     -#include <rtems/termiostypes.h>
>> >     >     >>     >     -#include <libchip/serial.h>
>> >     >     >>     >     -#include
>> "../../shared/dev/serial/legacy-console.h"
>> >     >     >>     >     -#include <bsp/rpi-fb.h>
>> >     >     >>     >     -
>> >     >     >>     >     -rtems_device_minor_number BSPPrintkPort = 0;
>> >     >     >>     >     -
>> >     >     >>     >     -/*
>> >     >     >>     >     - * Method to return true if the device
>> >     associated with the
>> >     >     >>     >     - * minor number probs available.
>> >     >     >>     >     - */
>> >     >     >>     >     -static bool bsp_Is_Available(
>> >     >     rtems_device_minor_number minor )
>> >     >     >>     >     -{
>> >     >     >>     >     -  console_tbl *cptr = Console_Port_Tbl[ minor ];
>> >     >     >>     >     -
>> >     >     >>     >     -  /*
>> >     >     >>     >     -   * First perform the configuration dependent
>> >     probe,
>> >     >     then the
>> >     >     >>     >     -   * device dependent probe
>> >     >     >>     >     -   */
>> >     >     >>     >     -  if ( ( !cptr->deviceProbe ||
>> cptr->deviceProbe(
>> >     >     minor ) ) &&
>> >     >     >>     >     -       cptr->pDeviceFns->deviceProbe( minor ) )
>> {
>> >     >     >>     >     -    return true;
>> >     >     >>     >     -  }
>> >     >     >>     >     -
>> >     >     >>     >     -  return false;
>> >     >     >>     >     -}
>> >     >     >>     >     -
>> >     >     >>     >     -/*
>> >     >     >>     >     - * Method to return the first available device.
>> >     >     >>     >     - */
>> >     >     >>     >     -static rtems_device_minor_number
>> >     >     bsp_First_Available_Device(
>> >     >     >>     void )
>> >     >     >>     >     -{
>> >     >     >>     >     -  rtems_device_minor_number minor;
>> >     >     >>     >     -
>> >     >     >>     >     -  for ( minor = 0; minor < Console_Port_Count;
>> >     minor++ ) {
>> >     >     >>     >     -    console_tbl *cptr = Console_Port_Tbl[ minor
>> ];
>> >     >     >>     >     -
>> >     >     >>     >     -    /*
>> >     >     >>     >     -     * First perform the configuration dependent
>> >     >     probe, then the
>> >     >     >>     >     -     * device dependent probe
>> >     >     >>     >     -     */
>> >     >     >>     >     -
>> >     >     >>     >     -    if ( ( !cptr->deviceProbe ||
>> cptr->deviceProbe(
>> >     >     minor ) ) &&
>> >     >     >>     >     -         cptr->pDeviceFns->deviceProbe( minor )
>> ) {
>> >     >     >>     >     -      return minor;
>> >     >     >>     >     -    }
>> >     >     >>     >     -  }
>> >     >     >>     >     -
>> >     >     >>     >     -  /*
>> >     >     >>     >     -   *  Error No devices were found.  We will
>> want to
>> >     >     bail here.
>> >     >     >>     >     -   */
>> >     >     >>     >     -  bsp_fatal( BSP_FATAL_CONSOLE_NO_DEV );
>> >     >     >>     >     -}
>> >     >     >>     >     -
>> >     >     >>     >     -void bsp_console_select( void )
>> >     >     >>     >     -{
>> >     >     >>     >     -  /*
>> >     >     >>     >     -   *  Reset Console_Port_Minor and
>> >     >     >>     >     -   *  BSPPrintkPort here if desired.
>> >     >     >>     >     -   *
>> >     >     >>     >     -   *  This default version allows the bsp to set
>> >     these
>> >     >     >>     >     -   *  values at creation and will not touch them
>> >     again
>> >     >     >>     >     -   *  unless the selected port number is not
>> >     available.
>> >     >     >>     >     -   */
>> >     >     >>     >     -  const char *opt;
>> >     >     >>     >     -
>> >     >     >>     >     -  Console_Port_Minor = BSP_CONSOLE_UART0;
>> >     >     >>     >     -  BSPPrintkPort = BSP_CONSOLE_UART0;
>> >     >     >>     >     -
>> >     >     >>     >     -  opt = rpi_cmdline_get_arg( "--console=" );
>> >     >     >>     >     -
>> >     >     >>     >     -  if ( opt ) {
>> >     >     >>     >     -    if ( strncmp( opt, "fbcons", sizeof(
>> >     "fbcons" ) -
>> >     >     1 ) ==
>> >     >     >>     0 ) {
>> >     >     >>     >     -      if ( rpi_video_is_initialized() > 0 ) {
>> >     >     >>     >     -        Console_Port_Minor = BSP_CONSOLE_FB;
>> >     >     >>     >     -        BSPPrintkPort = BSP_CONSOLE_FB;
>> >     >     >>     >     -      }
>> >     >     >>     >     -    }
>> >     >     >>     >     -  }
>> >     >     >>     >     -
>> >     >     >>     >     -  /*
>> >     >     >>     >     -   * If the device that was selected isn't
>> >     available then
>> >     >     >>     >     -   * let the user know and select the first
>> >     available
>> >     >     device.
>> >     >     >>     >     -   */
>> >     >     >>     >     -  if ( !bsp_Is_Available( Console_Port_Minor )
>> ) {
>> >     >     >>     >     -    Console_Port_Minor =
>> >     bsp_First_Available_Device();
>> >     >     >>     >     -  }
>> >     >     >>     >     -}
>> >     >     >>     >     diff --git
>> a/bsps/arm/raspberrypi/console/fbcons.c
>> >     >     >>     >     b/bsps/arm/raspberrypi/console/fbcons.c
>> >     >     >>     >     index 3669ba458d..0e6a430c54 100644
>> >     >     >>     >     --- a/bsps/arm/raspberrypi/console/fbcons.c
>> >     >     >>     >     +++ b/bsps/arm/raspberrypi/console/fbcons.c
>> >     >     >>     >     @@ -18,6 +18,7 @@
>> >     >     >>     >
>> >     >     >>     >      #include <rtems.h>
>> >     >     >>     >      #include <rtems/libio.h>
>> >     >     >>     >     +#include <rtems/termiostypes.h>
>> >     >     >>     >
>> >     >     >>     >      #include <stdlib.h>
>> >     >     >>     >
>> >     >     >>     >     @@ -29,15 +30,6 @@
>> >     >     >>     >      #include <bsp/vc.h>
>> >     >     >>     >      #include <bsp/rpi-fb.h>
>> >     >     >>     >
>> >     >     >>     >     -/*
>> >     >     >>     >     - *  fbcons_init
>> >     >     >>     >     - *
>> >     >     >>     >     - *  This function initializes the fb console to
>> a
>> >     >     quiecsent
>> >     >     >>     state.
>> >     >     >>     >     - */
>> >     >     >>     >     -static void fbcons_init( int minor )
>> >     >     >>     >     -{
>> >     >     >>     >     -}
>> >     >     >>     >     -
>> >     >     >>     >      /*
>> >     >     >>     >       *  fbcons_open
>> >     >     >>     >       *
>> >     >     >>     >     @@ -45,13 +37,14 @@ static void fbcons_init( int
>> >     minor )
>> >     >     >>     >       *
>> >     >     >>     >       *  Default state is 9600 baud, 8 bits, No
>> >     parity, and
>> >     >     1 stop
>> >     >     >>     bit.
>> >     >     >>     >       */
>> >     >     >>     >     -static int fbcons_open(
>> >     >     >>     >     -  int   major,
>> >     >     >>     >     -  int   minor,
>> >     >     >>     >     -  void *arg
>> >     >     >>     >     +static bool fbcons_open(
>> >     >     >>     >     +  struct rtems_termios_tty *tty,
>> >     >     >>     >     +  rtems_termios_device_context *base,
>> >     >     >>     >     +  struct termios *term,
>> >     >     >>     >     +  rtems_libio_open_close_args_t *args
>> >     >     >>     >      )
>> >     >     >>     >      {
>> >     >     >>     >     -  return RTEMS_SUCCESSFUL;
>> >     >     >>     >     +  return true;
>> >     >     >>     >      }
>> >     >     >>     >
>> >     >     >>     >      /*
>> >     >     >>     >     @@ -59,13 +52,12 @@ static int fbcons_open(
>> >     >     >>     >       *
>> >     >     >>     >       *  This function shuts down the requested port.
>> >     >     >>     >       */
>> >     >     >>     >     -static int fbcons_close(
>> >     >     >>     >     -  int   major,
>> >     >     >>     >     -  int   minor,
>> >     >     >>     >     -  void *arg
>> >     >     >>     >     +static void fbcons_close(
>> >     >     >>     >     +  struct rtems_termios_tty *tty,
>> >     >     >>     >     +  rtems_termios_device_context *base,
>> >     >     >>     >     +  rtems_libio_open_close_args_t *args
>> >     >     >>     >      )
>> >     >     >>     >      {
>> >     >     >>     >     -  return ( RTEMS_SUCCESSFUL );
>> >     >     >>     >      }
>> >     >     >>     >
>> >     >     >>     >      /*
>> >     >     >>     >     @@ -73,8 +65,8 @@ static int fbcons_close(
>> >     >     >>     >       *
>> >     >     >>     >       *  This routine polls out the requested
>> character.
>> >     >     >>     >       */
>> >     >     >>     >     -static void fbcons_write_polled(
>> >     >     >>     >     -  int  minor,
>> >     >     >>     >     +void fbcons_write_polled(
>> >     >     >>     >     +  rtems_termios_device_context *base,
>> >     >     >>     >        char c
>> >     >     >>     >      )
>> >     >     >>     >      {
>> >     >     >>     >     @@ -90,8 +82,8 @@ static void
>> fbcons_write_polled(
>> >     >     >>     >       *  Console Termios output entry point when
>> using
>> >     >     polled output.
>> >     >     >>     >       *
>> >     >     >>     >       */
>> >     >     >>     >     -static ssize_t fbcons_write_support_polled(
>> >     >     >>     >     -  int         minor,
>> >     >     >>     >     +static void fbcons_write_support_polled(
>> >     >     >>     >     +  rtems_termios_device_context *base,
>> >     >     >>     >        const char *buf,
>> >     >     >>     >        size_t      len
>> >     >     >>     >      )
>> >     >     >>     >     @@ -102,14 +94,9 @@ static ssize_t
>> >     >     fbcons_write_support_polled(
>> >     >     >>     >         * poll each byte in the string out of the
>> port.
>> >     >     >>     >         */
>> >     >     >>     >        while ( nwrite < len ) {
>> >     >     >>     >     -    fbcons_write_polled( minor, *buf++ );
>> >     >     >>     >     +    fbcons_write_polled( base, *buf++ );
>> >     >     >>     >          nwrite++;
>> >     >     >>     >        }
>> >     >     >>     >     -
>> >     >     >>     >     -  /*
>> >     >     >>     >     -   * return the number of bytes written.
>> >     >     >>     >     -   */
>> >     >     >>     >     -  return nwrite;
>> >     >     >>     >      }
>> >     >     >>     >
>> >     >     >>     >      /*
>> >     >     >>     >     @@ -117,7 +104,9 @@ static ssize_t
>> >     >     fbcons_write_support_polled(
>> >     >     >>     >       *
>> >     >     >>     >       *  Console Termios polling input entry point.
>> >     >     >>     >       */
>> >     >     >>     >     -static int fbcons_inbyte_nonblocking_polled( int
>> >     minor )
>> >     >     >>     >     +int fbcons_inbyte_nonblocking_polled(
>> >     >     >>     >     +  rtems_termios_device_context *base
>> >     >     >>     >     +)
>> >     >     >>     >      {
>> >     >     >>     >        // if( rtems_kbpoll() ) {
>> >     >     >>     >        //   int c = getch();
>> >     >     >>     >     @@ -133,15 +122,17 @@ static int
>> >     >     fbcons_inbyte_nonblocking_polled(
>> >     >     >>     >     int minor )
>> >     >     >>     >       *  This function sets the UART channel to
>> >     reflect the
>> >     >     requested
>> >     >     >>     >     termios
>> >     >     >>     >       *  port settings.
>> >     >     >>     >       */
>> >     >     >>     >     -static int fbcons_set_attributes(
>> >     >     >>     >     -  int                   minor,
>> >     >     >>     >     +static bool fbcons_set_attributes(
>> >     >     >>     >     +  rtems_termios_device_context *base,
>> >     >     >>     >        const struct termios *t
>> >     >     >>     >      )
>> >     >     >>     >      {
>> >     >     >>     >     -  return 0;
>> >     >     >>     >     +  return true;
>> >     >     >>     >      }
>> >     >     >>     >
>> >     >     >>     >     -bool fbcons_probe( int minor )
>> >     >     >>     >     +bool fbcons_probe(
>> >     >     >>     >     +  rtems_termios_device_context *context
>> >     >     >>     >     +)
>> >     >     >>     >      {
>> >     >     >>     >        // rtems_status_code status;
>> >     >     >>     >        static bool firstTime = true;
>> >     >     >>     >     @@ -163,15 +154,12 @@ bool fbcons_probe( int
>> minor )
>> >     >     >>     >        return ret;
>> >     >     >>     >      }
>> >     >     >>     >
>> >     >     >>     >     -const console_fns fbcons_fns =
>> >     >     >>     >     +const rtems_termios_device_handler fbcons_fns =
>> >     >     >>     >      {
>> >     >     >>     >     -  .deviceProbe = libchip_serial_default_probe,
>> >        /*
>> >     >     >>     deviceProbe */
>> >     >     >>     >     -  .deviceFirstOpen = fbcons_open,
>>    /*
>> >     >     >>     deviceFirstOpen */
>> >     >     >>     >     -  .deviceLastClose = fbcons_close,
>>   /*
>> >     >     >>     deviceLastClose */
>> >     >     >>     >     -  .deviceRead =
>> fbcons_inbyte_nonblocking_polled, /*
>> >     >     >>     deviceRead */
>> >     >     >>     >     -  .deviceWrite = fbcons_write_support_polled,
>>    /*
>> >     >     >>     deviceWrite */
>> >     >     >>     >     -  .deviceInitialize = fbcons_init,
>>   /*
>> >     >     >>     >     deviceInitialize */
>> >     >     >>     >     -  .deviceWritePolled = fbcons_write_polled,
>>    /*
>> >     >     >>     >     deviceWritePolled */
>> >     >     >>     >     -  .deviceSetAttributes =
>> fbcons_set_attributes,   /*
>> >     >     >>     >     deviceSetAttributes */
>> >     >     >>     >     -  .deviceOutputUsesInterrupts = FALSE,
>>  /*
>> >     >     >>     >     deviceOutputUsesInterrupts*/
>> >     >     >>     >     -};
>> >     >     >>     >     +  .first_open = fbcons_open,
>> >     >     >>     >     +  .last_close = fbcons_close,
>> >     >     >>     >     +  .poll_read = fbcons_inbyte_nonblocking_polled,
>> >     >     >>     >     +  .write = fbcons_write_support_polled,
>> >     >     >>     >     +  .set_attributes = fbcons_set_attributes,
>> >     >     >>     >     +  .mode = TERMIOS_POLLED
>> >     >     >>     >     +};
>> >     >     >>     >     \ No newline at end of file
>> >     >     >>     >     diff --git a/bsps/arm/raspberrypi/console/usart.c
>> >     >     >>     >     b/bsps/arm/raspberrypi/console/usart.c
>> >     >     >>     >     deleted file mode 100644
>> >     >     >>     >     index 25fb523621..0000000000
>> >     >     >>     >     --- a/bsps/arm/raspberrypi/console/usart.c
>> >     >     >>     >     +++ /dev/null
>> >     >     >>     >     @@ -1,167 +0,0 @@
>> >     >     >>     >     -/**
>> >     >     >>     >     - * @file
>> >     >     >>     >     - *
>> >     >     >>     >     - * @ingroup raspberrypi_usart
>> >     >     >>     >     - *
>> >     >     >>     >     - * @brief USART support.
>> >     >     >>     >     - */
>> >     >     >>     >     -
>> >     >     >>     >     -/*
>> >     >     >>     >     - * Copyright (c) 2013 Alan Cudmore
>> >     >     >>     >     - *
>> >     >     >>     >     - *  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.h>
>> >     >     >>     >     -#include <bsp/irq.h>
>> >     >     >>     >     -#include <bsp/usart.h>
>> >     >     >>     >     -#include <bsp/raspberrypi.h>
>> >     >     >>     >     -#include <rtems/bspIo.h>
>> >     >     >>     >     -
>> >     >     >>     >     -static void usart_delay(uint32_t n)
>> >     >     >>     >     -{
>> >     >     >>     >     - volatile uint32_t i = 0;
>> >     >     >>     >     -
>> >     >     >>     >     - for(i = 0; i < n; i++)
>> >     >     >>     >     -   ;
>> >     >     >>     >     -}
>> >     >     >>     >     -
>> >     >     >>     >     -#if 0
>> >     >     >>     >     -/*
>> >     >     >>     >     - *  These will be useful when the driver
>> supports
>> >     >     interrupt
>> >     >     >>     driven IO.
>> >     >     >>     >     - */
>> >     >     >>     >     -static rtems_vector_number
>> >     usart_get_irq_number(const
>> >     >     >>     console_tbl *ct)
>> >     >     >>     >     -{
>> >     >     >>     >     -  return ct->ulIntVector;
>> >     >     >>     >     -}
>> >     >     >>     >     -
>> >     >     >>     >     -static uint32_t usart_get_baud(const console_tbl
>> >     *ct)
>> >     >     >>     >     -{
>> >     >     >>     >     -  return ct->ulClock;
>> >     >     >>     >     -}
>> >     >     >>     >     -#endif
>> >     >     >>     >     -
>> >     >     >>     >     -static void usart_set_baud(int minor, int baud)
>> >     >     >>     >     -{
>> >     >     >>     >     - /*
>> >     >     >>     >     -  * Nothing for now
>> >     >     >>     >     -  */
>> >     >     >>     >     - return;
>> >     >     >>     >     -}
>> >     >     >>     >     -
>> >     >     >>     >     -static void usart_initialize(int minor)
>> >     >     >>     >     -{
>> >     >     >>     >     -  unsigned int gpio_reg;
>> >     >     >>     >     -
>> >     >     >>     >     -  /*
>> >     >     >>     >     -  ** Program GPIO pins for UART 0
>> >     >     >>     >     -  */
>> >     >     >>     >     -  gpio_reg = BCM2835_REG(BCM2835_GPIO_GPFSEL1);
>> >     >     >>     >     -  gpio_reg &= ~(7<<12);    /* gpio14 */
>> >     >     >>     >     -  gpio_reg |=  (4<<12);    /* alt0   */
>> >     >     >>     >     -  gpio_reg &= ~(7<<15);    /* gpio15 */
>> >     >     >>     >     -  gpio_reg |=  (4<<15);    /* alt0   */
>> >     >     >>     >     -  BCM2835_REG(BCM2835_GPIO_GPFSEL1) = gpio_reg;
>> >     >     >>     >     -
>> >     >     >>     >     -  BCM2835_REG(BCM2835_GPIO_GPPUD) = 0;
>> >     >     >>     >     -  usart_delay(150);
>> >     >     >>     >     -  BCM2835_REG(BCM2835_GPIO_GPPUDCLK0) =
>> >     (1<<14)|(1<<15);
>> >     >     >>     >     -  usart_delay(150);
>> >     >     >>     >     -  BCM2835_REG(BCM2835_GPIO_GPPUDCLK0) = 0;
>> >     >     >>     >     -
>> >     >     >>     >     -  /*
>> >     >     >>     >     -  ** Init the PL011 UART
>> >     >     >>     >     -  */
>> >     >     >>     >     -  BCM2835_REG(BCM2835_UART0_CR)   = 0;
>> >     >     >>     >     -  BCM2835_REG(BCM2835_UART0_ICR)  = 0x7FF;
>> >     >     >>     >     -  BCM2835_REG(BCM2835_UART0_IMSC) = 0;
>> >     >     >>     >     -  BCM2835_REG(BCM2835_UART0_IBRD) = 1;
>> >     >     >>     >     -  BCM2835_REG(BCM2835_UART0_FBRD) = 40;
>> >     >     >>     >     -  BCM2835_REG(BCM2835_UART0_LCRH) = 0x70;
>> >     >     >>     >     -  BCM2835_REG(BCM2835_UART0_RSRECR) =  0;
>> >     >     >>     >     -
>> >     >     >>     >     -  BCM2835_REG(BCM2835_UART0_CR)   = 0x301;
>> >     >     >>     >     -
>> >     >     >>     >     -  BCM2835_REG(BCM2835_UART0_IMSC) =
>> >     BCM2835_UART0_IMSC_RX;
>> >     >     >>     >     -
>> >     >     >>     >     -  usart_set_baud(minor, 115000);
>> >     >     >>     >     -}
>> >     >     >>     >     -
>> >     >     >>     >     -static int usart_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 usart_last_close(int major, int
>> >     minor, void
>> >     >     *arg)
>> >     >     >>     >     -{
>> >     >     >>     >     -  return 0;
>> >     >     >>     >     -}
>> >     >     >>     >     -
>> >     >     >>     >     -static int usart_read_polled(int minor)
>> >     >     >>     >     -{
>> >     >     >>     >     -  if (minor == 0) {
>> >     >     >>     >     -    if (((BCM2835_REG(BCM2835_UART0_FR)) &
>> >     >     BCM2835_UART0_FR_RXFE)
>> >     >     >>     >     == 0) {
>> >     >     >>     >     -       return((BCM2835_REG(BCM2835_UART0_DR)) &
>> >     0xFF );
>> >     >     >>     >     -    } else {
>> >     >     >>     >     -      return -1;
>> >     >     >>     >     -    }
>> >     >     >>     >     -  } else {
>> >     >     >>     >     -    printk("Unknown console minor number: %d\n",
>> >     minor);
>> >     >     >>     >     -    return -1;
>> >     >     >>     >     -  }
>> >     >     >>     >     -}
>> >     >     >>     >     -
>> >     >     >>     >     -static void usart_write_polled(int minor, char
>> c)
>> >     >     >>     >     -{
>> >     >     >>     >     -   while (1) {
>> >     >     >>     >     -     if ((BCM2835_REG(BCM2835_UART0_FR) &
>> >     >     >>     BCM2835_UART0_FR_TXFF) == 0)
>> >     >     >>     >     -       break;
>> >     >     >>     >     -   }
>> >     >     >>     >     -   BCM2835_REG(BCM2835_UART0_DR) = c;
>> >     >     >>     >     -}
>> >     >     >>     >     -
>> >     >     >>     >     -static ssize_t usart_write_support_polled(
>> >     >     >>     >     -  int minor,
>> >     >     >>     >     -  const char *s,
>> >     >     >>     >     -  size_t n
>> >     >     >>     >     -)
>> >     >     >>     >     -{
>> >     >     >>     >     -  ssize_t i = 0;
>> >     >     >>     >     -
>> >     >     >>     >     -  for (i = 0; i < n; ++i) {
>> >     >     >>     >     -    usart_write_polled(minor, s [i]);
>> >     >     >>     >     -  }
>> >     >     >>     >     -
>> >     >     >>     >     -  return n;
>> >     >     >>     >     -}
>> >     >     >>     >     -
>> >     >     >>     >     -static int usart_set_attributes(int minor, const
>> >     struct
>> >     >     >>     termios *term)
>> >     >     >>     >     -{
>> >     >     >>     >     -  return -1;
>> >     >     >>     >     -}
>> >     >     >>     >     -
>> >     >     >>     >     -const console_fns bcm2835_usart_fns = {
>> >     >     >>     >     -  .deviceProbe = libchip_serial_default_probe,
>> >     >     >>     >     -  .deviceFirstOpen = usart_first_open,
>> >     >     >>     >     -  .deviceLastClose = usart_last_close,
>> >     >     >>     >     -  .deviceRead = usart_read_polled,
>> >     >     >>     >     -  .deviceWrite = usart_write_support_polled,
>> >     >     >>     >     -  .deviceInitialize = usart_initialize,
>> >     >     >>     >     -  .deviceWritePolled = usart_write_polled,
>> >     >     >>     >     -  .deviceSetAttributes = usart_set_attributes,
>> >     >     >>     >     -  .deviceOutputUsesInterrupts = false
>> >     >     >>     >     -};
>> >     >     >>     >     diff --git
>> >     a/bsps/arm/raspberrypi/include/bsp/fbcons.h
>> >     >     >>     >     b/bsps/arm/raspberrypi/include/bsp/fbcons.h
>> >     >     >>     >     index d0e126699a..9bdb4b115e 100644
>> >     >     >>     >     --- a/bsps/arm/raspberrypi/include/bsp/fbcons.h
>> >     >     >>     >     +++ b/bsps/arm/raspberrypi/include/bsp/fbcons.h
>> >     >     >>     >     @@ -33,12 +33,29 @@ extern "C" {
>> >     >     >>     >
>> >     >     >>     >      #define FB_CONSOLE 0x50492835
>> >     >     >>     >
>> >     >     >>     >     -bool fbcons_probe( int minor );
>> >     >     >>     >     +bool fbcons_probe(
>> >     >     >>     >     +  rtems_termios_device_context *base
>> >     >     >>     >     + );
>> >     >     >>     >     +
>> >     >     >>     >     +void fbcons_write_polled(
>> >     >     >>     >     +  rtems_termios_device_context *base,
>> >     >     >>     >     +  char c
>> >     >     >>     >     +);
>> >     >     >>     >     +
>> >     >     >>     >     +int fbcons_inbyte_nonblocking_polled(
>> >     >     >>     >     +  rtems_termios_device_context *base
>> >     >     >>     >     +);
>> >     >     >>     >     +
>> >     >     >>     >     +void output_char_fb(char c);
>> >     >     >>     >     +
>> >     >     >>     >     +typedef struct {
>> >     >     >>     >     +    rtems_termios_device_context base;
>> >     >     >>     >     +} rpi_fb_context ;
>> >     >     >>     >
>> >     >     >>     >      /*
>> >     >     >>     >       * Driver function table
>> >     >     >>     >       */
>> >     >     >>     >     -extern const console_fns fbcons_fns;
>> >     >     >>     >     +extern const rtems_termios_device_handler
>> >     fbcons_fns;
>> >     >     >>     >
>> >     >     >>     >      #ifdef __cplusplus
>> >     >     >>     >      }
>> >     >     >>     >     diff --git
>> >     a/bsps/arm/raspberrypi/include/bsp/raspberrypi.h
>> >     >     >>     >     b/bsps/arm/raspberrypi/include/bsp/raspberrypi.h
>> >     >     >>     >     index 40c80cf408..e052c2becb 100644
>> >     >     >>     >     ---
>> a/bsps/arm/raspberrypi/include/bsp/raspberrypi.h
>> >     >     >>     >     +++
>> b/bsps/arm/raspberrypi/include/bsp/raspberrypi.h
>> >     >     >>     >     @@ -24,6 +24,7 @@
>> >     >     >>     >      #include <bspopts.h>
>> >     >     >>     >      #include <stdint.h>
>> >     >     >>     >      #include <bsp/utility.h>
>> >     >     >>     >     +#include <rtems/termiostypes.h>
>> >     >     >>     >
>> >     >     >>     >      /**
>> >     >     >>     >       * @defgroup raspberrypi_reg Register
>> Definitions
>> >     >     >>     >     @@ -60,6 +61,17 @@
>> >     >     >>     >
>> >     >     >>     >      #define RPI_PERIPHERAL_SIZE         0x01000000
>> >     >     >>     >
>> >     >     >>     >     +/**
>> >     >     >>     >     + * @name Console select definitions
>> >     >     >>     >     + *
>> >     >     >>     >     + * @{
>> >     >     >>     >     + */
>> >     >     >>     >     +
>> >     >     >>     >     +#define PL011 0
>> >     >     >>     >     +#define FB    1
>> >     >     >>     >     +
>> >     >     >>     >     +/** @} */
>> >     >     >>     >     +
>> >     >     >>     >      /**
>> >     >     >>     >       * @name Internal ARM Timer Registers
>> >     >     >>     >       *
>> >     >     >>     >     @@ -184,42 +196,6 @@
>> >     >     >>     >
>> >     >     >>     >      /** @} */
>> >     >     >>     >
>> >     >     >>     >     -/**
>> >     >     >>     >     - * @name UART 0 (PL011) Registers
>> >     >     >>     >     - *
>> >     >     >>     >     - * @{
>> >     >     >>     >     - */
>> >     >     >>     >     -
>> >     >     >>     >     -#define BCM2835_UART0_BASE
>> >      (RPI_PERIPHERAL_BASE
>> >     >     + 0x201000)
>> >     >     >>     >     -
>> >     >     >>     >     -#define BCM2835_UART0_DR
>> >      (BCM2835_UART0_BASE +
>> >     >     0x00)
>> >     >     >>     >     -#define BCM2835_UART0_RSRECR
>> >      (BCM2835_UART0_BASE +
>> >     >     0x04)
>> >     >     >>     >     -#define BCM2835_UART0_FR
>> >      (BCM2835_UART0_BASE +
>> >     >     0x18)
>> >     >     >>     >     -#define BCM2835_UART0_ILPR
>> >      (BCM2835_UART0_BASE +
>> >     >     0x20)
>> >     >     >>     >     -#define BCM2835_UART0_IBRD
>> >      (BCM2835_UART0_BASE +
>> >     >     0x24)
>> >     >     >>     >     -#define BCM2835_UART0_FBRD
>> >      (BCM2835_UART0_BASE +
>> >     >     0x28)
>> >     >     >>     >     -#define BCM2835_UART0_LCRH
>> >      (BCM2835_UART0_BASE +
>> >     >     0x2C)
>> >     >     >>     >     -#define BCM2835_UART0_CR
>> >      (BCM2835_UART0_BASE +
>> >     >     0x30)
>> >     >     >>     >     -#define BCM2835_UART0_IFLS
>> >      (BCM2835_UART0_BASE +
>> >     >     0x34)
>> >     >     >>     >     -#define BCM2835_UART0_IMSC
>> >      (BCM2835_UART0_BASE +
>> >     >     0x38)
>> >     >     >>     >     -#define BCM2835_UART0_RIS
>> >     (BCM2835_UART0_BASE +
>> >     >     0x3C)
>> >     >     >>     >     -#define BCM2835_UART0_MIS
>> >     (BCM2835_UART0_BASE +
>> >     >     0x40)
>> >     >     >>     >     -#define BCM2835_UART0_ICR
>> >     (BCM2835_UART0_BASE +
>> >     >     0x44)
>> >     >     >>     >     -#define BCM2835_UART0_DMACR
>> >     (BCM2835_UART0_BASE +
>> >     >     0x48)
>> >     >     >>     >     -#define BCM2835_UART0_ITCR
>> >      (BCM2835_UART0_BASE +
>> >     >     0x80)
>> >     >     >>     >     -#define BCM2835_UART0_ITIP
>> >      (BCM2835_UART0_BASE +
>> >     >     0x84)
>> >     >     >>     >     -#define BCM2835_UART0_ITOP
>> >      (BCM2835_UART0_BASE +
>> >     >     0x88)
>> >     >     >>     >     -#define BCM2835_UART0_TDR
>> >     (BCM2835_UART0_BASE +
>> >     >     0x8C)
>> >     >     >>     >     -
>> >     >     >>     >     -#define BCM2835_UART0_MIS_RX    0x10
>> >     >     >>     >     -#define BCM2835_UART0_MIS_TX    0x20
>> >     >     >>     >     -#define BCM2835_UART0_IMSC_RX   0x10
>> >     >     >>     >     -#define BCM2835_UART0_IMSC_TX   0x20
>> >     >     >>     >     -#define BCM2835_UART0_FR_RXFE   0x10
>> >     >     >>     >     -#define BCM2835_UART0_FR_TXFF   0x20
>> >     >     >>     >     -#define BCM2835_UART0_ICR_RX    0x10
>> >     >     >>     >     -#define BCM2835_UART0_ICR_TX    0x20
>> >     >     >>     >     -
>> >     >     >>     >      /** @} */
>> >     >     >>     >
>> >     >     >>     >      /**
>> >     >     >>     >     diff --git
>> a/bsps/arm/raspberrypi/include/bsp/usart.h
>> >     >     >>     >     b/bsps/arm/raspberrypi/include/bsp/usart.h
>> >     >     >>     >     index d3e710c5e9..abbf53626c 100644
>> >     >     >>     >     --- a/bsps/arm/raspberrypi/include/bsp/usart.h
>> >     >     >>     >     +++ b/bsps/arm/raspberrypi/include/bsp/usart.h
>> >     >     >>     >     @@ -32,9 +32,8 @@
>> >     >     >>     >      extern "C" {
>> >     >     >>     >      #endif /* __cplusplus */
>> >     >     >>     >
>> >     >     >>     >     -#define USART0_DEFAULT_BAUD 115000
>> >     >     >>     >     -
>> >     >     >>     >     -extern const console_fns bcm2835_usart_fns;
>> >     >     >>     >     +#define PL011_DEFAULT_BAUD 115000
>> >     >     >>     >     +#define BCM2835_PL011_BASE (RPI_PERIPHERAL_BASE
>> +
>> >     >     0x201000)
>> >     >     >>     >
>> >     >     >>     >      #ifdef __cplusplus
>> >     >     >>     >      }
>> >     >     >>     >     diff --git
>> >     a/c/src/lib/libbsp/arm/raspberrypi/Makefile.am
>> >     >     >>     >     b/c/src/lib/libbsp/arm/raspberrypi/Makefile.am
>> >     >     >>     >     index 11a22f89e3..0e0d5bef67 100644
>> >     >     >>     >     ---
>> a/c/src/lib/libbsp/arm/raspberrypi/Makefile.am
>> >     >     >>     >     +++
>> b/c/src/lib/libbsp/arm/raspberrypi/Makefile.am
>> >     >     >>     >     @@ -42,6 +42,7 @@ librtemsbsp_a_SOURCES +=
>> >     >     >>     >
>> >      ../../../../../../bsps/shared/start/bspfatal-default.c
>> >     >     >>     >      librtemsbsp_a_SOURCES +=
>> >     >     >>     >
>> >     >
>> >       ../../../../../../bsps/shared/dev/cpucounter/cpucounterfrequency.c
>> >     >     >>     >      librtemsbsp_a_SOURCES +=
>> >     >     >>     >
>> >     >      ../../../../../../bsps/shared/dev/cpucounter/cpucounterread.c
>> >     >     >>     >      librtemsbsp_a_SOURCES +=
>> >     >     >>     ../../../../../../bsps/shared/start/sbrk.c
>> >     >     >>     >     +librtemsbsp_a_SOURCES +=
>> >     >     >>     ../../../../../../bsps/shared/start/bsp-fdt.c
>> >     >     >>     >      librtemsbsp_a_SOURCES +=
>> >     >     >>     >     ../../../../../../bsps/shared/start/stackalloc.c
>> >     >     >>     >      librtemsbsp_a_SOURCES +=
>> >     >     >>     >
>> >      ../../../../../../bsps/arm/shared/start/bsp-start-memcpy.S
>> >     >     >>     >      librtemsbsp_a_SOURCES +=
>> >     >     >>     >
>> >     >
>>   ../../../../../../bsps/arm/shared/cp15/arm-cp15-set-ttb-entries.c
>> >     >     >>     >     @@ -63,14 +64,13 @@ librtemsbsp_a_SOURCES +=
>> >     >     >>     >
>> >      ../../../../../../bsps/arm/shared/cp15/arm-cp15-set-exc
>> >     >     >>     >      librtemsbsp_a_SOURCES +=
>> >     >     >>     >     ../../../../../../bsps/arm/raspberrypi/irq/irq.c
>> >     >     >>     >
>> >     >     >>     >      # Console
>> >     >     >>     >     -librtemsbsp_a_SOURCES +=
>> >     >     >>     >
>> >      ../../../../../../bsps/shared/dev/serial/legacy-console.c
>> >     >     >>     >     -librtemsbsp_a_SOURCES +=
>> >     >     >>     >
>> >     >
>>   ../../../../../../bsps/shared/dev/serial/legacy-console-control.c
>> >     >     >>     >      librtemsbsp_a_SOURCES +=
>> >     >     >>     >
>> >     >
>>   ../../../../../../bsps/arm/raspberrypi/console/console-config.c
>> >     >     >>     >     -librtemsbsp_a_SOURCES +=
>> >     >     >>     >
>> >     >
>>   ../../../../../../bsps/arm/raspberrypi/console/console_select.c
>> >     >     >>     >     -librtemsbsp_a_SOURCES +=
>> >     >     >>     >
>> >      ../../../../../../bsps/arm/raspberrypi/console/usart.c
>> >     >     >>     >      librtemsbsp_a_SOURCES +=
>> >     >     >>     >
>>  ../../../../../../bsps/arm/raspberrypi/console/fb.c
>> >     >     >>     >      librtemsbsp_a_SOURCES +=
>> >     >     >>     >
>> >      ../../../../../../bsps/arm/raspberrypi/console/fbcons.c
>> >     >     >>     >      librtemsbsp_a_SOURCES +=
>> >     >     >>     >
>> >      ../../../../../../bsps/arm/raspberrypi/console/outch.c
>> >     >     >>     >     +librtemsbsp_a_SOURCES +=
>> >     >     >>     >
>> >      ../../../../../../bsps/shared/dev/serial/console-termios.c
>> >     >     >>     >     +librtemsbsp_a_SOURCES +=
>> >     >     >>     >
>> >     >
>>   ../../../../../../bsps/shared/dev/serial/console-termios-init.c
>> >     >     >>     >     +librtemsbsp_a_SOURCES +=
>> >     >     >>     >
>>  ../../../../../../bsps/arm/shared/serial/arm-pl011.c
>> >     >     >>     >
>> >     >     >>     >      # Mailbox
>> >     >     >>     >      librtemsbsp_a_SOURCES +=
>> >     >     >>     >
>> >      ../../../../../../bsps/arm/raspberrypi/start/mailbox.c
>> >     >     >>     >     --
>> >     >     >>     >     2.17.1
>> >     >     >>     >
>> >     >     >>
>> >     >
>> >
>>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.rtems.org/pipermail/devel/attachments/20191231/c83c6524/attachment-0001.html>


More information about the devel mailing list