[PATCH] Raspberrypi: updated the console interface.
Christian Mauderer
list at c-mauderer.de
Sat Dec 28 15:15:47 UTC 2019
On 28/12/2019 13:41, Niteesh wrote:
> On Sat, Dec 28, 2019 at 3:20 PM Christian Mauderer <list at c-mauderer.de
> <mailto:list at c-mauderer.de>> wrote:
>
> Missed your question further below in my first mail.
>
> On 28/12/2019 10:45, Christian Mauderer wrote:
> > On 28/12/2019 09:38, Niteesh wrote:
> >> I didn't get any of these warnings, which command did you use?
> >
> > Just the usual make in the build directory. I configured with the
> > following line:
> >
> > /home/christian/rtems/rtems-bbb/build/..//libs/rtems/configure
> > --target=arm-rtems5
> > --prefix=/home/christian/rtems/rtems-bbb/build/..//install/rtems/5/
> > --enable-rtemsbsp=raspberrypi --enable-maintainer-mode
> > --enable-tests=samples --disable-networking
> >
> > Don't let the "bbb" irritate you: I hacked my normal beagle build
> > environment for use with the raspberry.
> >
> > There are quite a lot of messages. So the warnings might are a bit
> > hidden. Also note that you only get them if the file is recompiled. So
> > either you have to change something or remove the console-config.o and
> > fbcons.o object file to trigger them on a re-make.
> >
> >>
> >> On Sat, Dec 28, 2019 at 3:48 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>>> wrote:
> >>
> >> Hello,
> >>
> >> git complained about some whitespaces when applying the patch:
> >>
> >> ````````````
> >> git am \[PATCH\]\ Raspberrypi:\ updated\ the\ console\
> interface..eml
> >> Applying: Raspberrypi: updated the console interface.
> >>
> /home/christian/rtems/rtems-bbb/.git/modules/rtems/rebase-apply/patch:96:
> >> trailing
> >> whitespace.
> >>
> >>
> /home/christian/rtems/rtems-bbb/.git/modules/rtems/rebase-apply/patch:304:
> >> trailing whitespace.
> >> const rtems_termios_device_handler fbcons_fns =
> >>
> /home/christian/rtems/rtems-bbb/.git/modules/rtems/rebase-apply/patch:481:
> >> trailing whitespace.
> >> bool fbcons_probe(
> >>
> /home/christian/rtems/rtems-bbb/.git/modules/rtems/rebase-apply/patch:515:
> >> trailing whitespace.
> >> * @name Current Serial Device
> >> warning: 4 lines add whitespace errors.
> >> ````````````
> >>
> >> Fixed all the whitespace erros.
> >>
> >> When compiling I get some warnings like
> >>
> >> ````````````
> >>
> /home/christian/rtems/rtems-bbb/build/..//libs/rtems/c/src/lib/libbsp/arm/raspberrypi/../../../../../../bsps/arm/raspberrypi/console/console-config.c:
> >> In function 'output_char':
> >>
> /home/christian/rtems/rtems-bbb/build/..//libs/rtems/c/src/lib/libbsp/arm/raspberrypi/../../../../../../bsps/arm/raspberrypi/console/console-config.c:64:3:
> >> warning: enumeration value 'AUX_UART' not handled in switch
> [-Wswitch]
> >> switch(SERIAL){
> >> ^~~~~~
> >> ````````````
> >>
> >> and
> >>
> >> ````````````
> >>
> /home/christian/rtems/rtems-bbb/build/..//libs/rtems/c/src/lib/libbsp/arm/raspberrypi/../../../../../../bsps/arm/raspberrypi/console/fbcons.c:174:17:
> >> warning: initialization from incompatible pointer type
> >> [-Wincompatible-pointer-types]
> >> .first_open = fbcons_open,
> >> ^~~~~~~~~~~
> >> ````````````
> >>
> >> Please fix these. I'm not entirely sure about the first
> warning. That
> >> might has been there before. If possible it would be nice if
> you could
> >> fix it anyway. In that case maybe in an extra commit.
> >>
> >> At least the PL011 works on a Pi2 on real hardware too. I
> haven't tested
> >> the framebuffer yet. I'm still trying to find out how to
> select it
> >> before or after the patch.
> >>
> >> Please see my notes in the patch below regarding some points.
> >>
> >> Best regards
> >>
> >> Christian
> >>
> >> On 27/12/2019 12:08, G S Niteesh 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 functions signatures where also changed
> >> > to accommodate with interface update.
> >> > ---
> >> > bsps/arm/raspberrypi/console/console-config.c | 67 +++++----
> >> > bsps/arm/raspberrypi/console/console_select.c | 65 +-------
> >> > bsps/arm/raspberrypi/console/fbcons.c | 50 +++---
> >> > bsps/arm/raspberrypi/console/usart.c | 142
> >> ------------------
> >> > bsps/arm/raspberrypi/include/bsp/fbcons.h | 19 ++-
> >> > .../arm/raspberrypi/include/bsp/raspberrypi.h | 52 ++-----
> >> > bsps/arm/raspberrypi/include/bsp/usart.h | 5 +-
> >> > c/src/lib/libbsp/arm/raspberrypi/Makefile.am | 5 +-
> >> > 8 files changed, 105 insertions(+), 300 deletions(-)
> >> >
> >> > diff --git a/bsps/arm/raspberrypi/console/console-config.c
> >> b/bsps/arm/raspberrypi/console/console-config.c
> >> > index d2186c918b..1f6dec384a 100644
> >> > --- a/bsps/arm/raspberrypi/console/console-config.c
> >> > +++ b/bsps/arm/raspberrypi/console/console-config.c
> >> > @@ -22,45 +22,54 @@
> >> >
> >> > #include <libchip/serial.h>
> >> >
> >> > -#include <bspopts.h>
> >> > -#include <bsp/irq.h>
> >> > +#include <bsp.h>
> >> > #include <bsp/usart.h>
> >> > #include <bsp/raspberrypi.h>
> >> > +#include <bsp/arm-pl011.h>
> >> > #include <bsp/fbcons.h>
> >> > +#include <bsp/console-termios.h>
> >> > +
> >> > +#include <bspopts.h>
> >> >
> >> > -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,
> >> > - },
> >> > +arm_pl011_context pl011_context = {
> >> > + .base = RTEMS_TERMIOS_DEVICE_CONTEXT_INITIALIZER("PL011"),
> >> > + .regs = (volatile pl011 *) BCM2835_PL011_BASE,
> >> > + .initial_baud = PL011_DEFAULT_BAUD
> >> > };
> >> >
> >> > -#define PORT_COUNT \
> >> > - (sizeof(Console_Configuration_Ports) \
> >> > - / sizeof(Console_Configuration_Ports [0]))
> >> > +rpi_fb_context fb_context = {
> >> > + .base = RTEMS_TERMIOS_DEVICE_CONTEXT_INITIALIZER("FB")
> >> > +};
> >> >
> >> > -unsigned long Console_Configuration_Count = PORT_COUNT;
> >> > +const console_device console_device_table[] = {
> >> > + {
> >> > + .device_file = "/dev/ttyS0",
> >> > + .probe = console_device_probe_default,
> >> > + .handler = &arm_pl011_fns,
> >> > + .context = &pl011_context.base
> >> > + },
> >> > + {
> >> > + .device_file = "/dev/fbcons",
> >> > + // Should be changed to fbcons_probe (but it still use old
> >> interface)
> >>
> >> What do you mean with that comment?
> >>
> >> I am sorry, I actually forgot to remove the comment. Previously I was
> >> using default
> >> probe function. But then changed it to fbcons_probe.
> >>
> >>
> >>
> >> > + .probe = fbcons_probe,
> >> > + .handler = &fbcons_fns,
> >> > + .context = &fb_context.base
> >> > + }
> >> > +};
> >> > +
> >> > +const size_t console_device_count =
> >> RTEMS_ARRAY_SIZE(console_device_table);
> >> >
> >> > static void output_char(char c)
> >> > {
> >> > - const console_fns *con =
> >> > - Console_Configuration_Ports
> [Console_Port_Minor].pDeviceFns;
> >> > -
> >> > - con->deviceWritePolled((int) Console_Port_Minor, c);
> >> > + switch(SERIAL){
> >> > + case FB:
> >> > + fbcons_write_polled(&fb_context.base, c);
> >> > + break;
> >> > + case PL011:
> >> > + arm_pl011_write_polled(&pl011_context.base, c);
> >> > + break;
> >>
> >> I don't like that selection method.
> >>
> >> 1. I'm not happy with that naming. It's a variable so please
> write it in
> >> lower case. Same is true for the type CURRENT_SERIAL. It
> should be a
> >> lower case name.
> >>
> >> 2. There is no default case.
> >>
> >> 3. This adds lot's of overhead. It means that for every
> character a
> >> switch case has to be evaluated. BSP_output_char is a pointer
> so you can
> >> just change it's value to point to one of two functions.
> >>
> >> Fixed this also. Removed the enum and switch, added a function
> pointer
> >> to the poll function, which is then called
> >> from outputchar by providing the right context.
> >>
> >> I modified and added the is_bsp_available, which check's if the
> current
> >> serial is
> >> available, if not throws BSP_FATAL_CONSOLE_NO_DEV.
> >>
> >> I was getting many warnings regarding incompatible pointer for
> eg: the
> >> write function in the device handler
> >> expects a void function, so I modified the
> fbcons_write_support_polled
> >> to void, which was previously returning
> >> the size of bytes written. Is that fine?
>
> If it isn't used anywhere else, it's OK. But isn't that function used
> for termios too?
>
> What do you mean by termios? I am talking about the
> rterms_termios_device_handler, this is responsible for termios right?
> And as per the doc
> the write function returns void.
Maybe I misunderstood:
We talked about the BSP_output_char function, right? In the original
version of the patch you used the following one:
static void output_char(char c)
{
switch(SERIAL){
case FB:
fbcons_write_polled(&fb_context.base, c);
break;
case PL011:
arm_pl011_write_polled(&pl011_context.base, c);
break;
}
}
BSP_output_char_function_type BSP_output_char = output_char;
You either call the fbcons_write_polled or the arm_pl011_write_polled.
Basically the BSP_output_char is a shortcut. It uses an interface
without the termios layer. But both functions are also called via
termios. In both cases via a ..._write_support_polled function. So you
can't just change the function prototype.
>
> You can also write a small wrapper function if you have to adapt
> something. That adds very few overhead. If the parameters match and only
> the return type should be ignored, a cast would be an alternative.
>
> I will go with the cast.
I had a more detailled look: Most likely the cast won't work. For the
two ..._write_polled functions you need a context parameter.
BSP_output_char doesn't support one. So you would be missing a parameter.
>
> >>
> >> How should I now apply this modified patch?
>
> Add the changes to your previous patch ("git commit --amend" or "git
> rebase -i") and create a version 2 ("git format-patch -v2 HEAD^") and
> send that just like before with "git send-email". That will give you the
> [PATCH v2] headers that you find on our mailing list.
>
> >>
> >> > + }
> >> > +
> >> > }
> >> >
> >> > BSP_output_char_function_type BSP_output_char = output_char;
> >> > diff --git a/bsps/arm/raspberrypi/console/console_select.c
> >> b/bsps/arm/raspberrypi/console/console_select.c
> >> > index bd246ca868..a7bd844bb0 100644
> >> > --- a/bsps/arm/raspberrypi/console/console_select.c
> >> > +++ b/bsps/arm/raspberrypi/console/console_select.c
> >> > @@ -15,7 +15,7 @@
> >> > * http://www.rtems.org/license/LICENSE
> >> > *
> >> > */
> >> > -
> >> > +#include <bsp/raspberrypi.h>
> >> > #include <bsp.h>
> >> > #include <bsp/fatal.h>
> >> > #include <rtems/libio.h>
> >> > @@ -24,59 +24,12 @@
> >> > #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 );
> >> > -}
> >> > +CURRENT_SERIAL SERIAL = PL011;>
> >> > void bsp_console_select( void )
> >> > {
> >> > @@ -90,25 +43,13 @@ void bsp_console_select( void )
> >> > */
> >> > 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;
> >> > + SERIAL = 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..99f2ab1aff 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>
> >> >
> >> > @@ -46,9 +47,10 @@ 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
> >> > + struct rtems_termios_tty *tty,
> >> > + rtems_termios_device_context *base,
> >> > + struct termios *term,
> >> > + rtems_libio_open_close_args_t *args
> >> > )
> >> > {
> >> > return RTEMS_SUCCESSFUL;
> >> > @@ -60,9 +62,9 @@ static int fbcons_open(
> >> > * This function shuts down the requested port.
> >> > */
> >> > static int fbcons_close(
> >> > - int major,
> >> > - int minor,
> >> > - void *arg
> >> > + struct rtems_termios_tty *tty,
> >> > + rtems_termios_device_context *base,
> >> > + rtems_libio_open_close_args_t *args
> >> > )
> >> > {
> >> > return ( RTEMS_SUCCESSFUL );
> >> > @@ -73,8 +75,8 @@ 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
> >> > )
> >> > {
> >> > @@ -91,7 +93,7 @@ static void fbcons_write_polled(
> >> > *
> >> > */
> >> > static ssize_t fbcons_write_support_polled(
> >> > - int minor,
> >> > + rtems_termios_device_context *base,
> >> > const char *buf,
> >> > size_t len
> >> > )
> >> > @@ -102,7 +104,7 @@ 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++;
> >> > }
> >> >
> >> > @@ -117,7 +119,9 @@ 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();
> >> > @@ -134,14 +138,16 @@ static int
> fbcons_inbyte_nonblocking_polled(
> >> int minor )
> >> > * port settings.
> >> > */
> >> > static int fbcons_set_attributes(
> >> > - int minor,
> >> > + rtems_termios_device_context *base,
> >> > const struct termios *t
> >> > )
> >> > {
> >> > return 0;
> >> > }
> >> >
> >> > -bool fbcons_probe( int minor )
> >> > +bool fbcons_probe(
> >> > + rtems_termios_device_context *base
> >> > +)
> >> > {
> >> > // rtems_status_code status;
> >> > static bool firstTime = true;
> >> > @@ -163,15 +169,11 @@ 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,
> >> > + .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
> >> > index 25fb523621..471d0c553f 100644
> >> > --- a/bsps/arm/raspberrypi/console/usart.c
> >> > +++ b/bsps/arm/raspberrypi/console/usart.c
> >> > @@ -23,145 +23,3 @@
> >> > #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..85b16fafe9 100644
> >> > --- a/bsps/arm/raspberrypi/include/bsp/fbcons.h
> >> > +++ b/bsps/arm/raspberrypi/include/bsp/fbcons.h
> >> > @@ -33,12 +33,27 @@ 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
> >> > +);
> >> > +
> >> > +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..4e5c84c741 100644
> >> > --- a/bsps/arm/raspberrypi/include/bsp/raspberrypi.h
> >> > +++ b/bsps/arm/raspberrypi/include/bsp/raspberrypi.h
> >> > @@ -60,6 +60,22 @@
> >> >
> >> > #define RPI_PERIPHERAL_SIZE 0x01000000
> >> >
> >> > +/**
> >> > + * @name Current Serial Device
> >> > + *
> >> > + * @{
> >> > + */
> >> > +
> >> > +typedef enum {
> >> > + PL011 = 0,
> >> > + AUX_UART,
> >> > + FB
> >> > +}CURRENT_SERIAL;
> >> > +
> >> > +extern CURRENT_SERIAL SERIAL;
> >> > +
> >> > +/** @} */
> >> > +
> >> > /**
> >> > * @name Internal ARM Timer Registers
> >> > *
> >> > @@ -184,42 +200,6 @@
> >> >
> >> > /** @} */
> >> >
> >> > -/**
> >> > - * @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..ce91527f92 100644
> >> > --- a/c/src/lib/libbsp/arm/raspberrypi/Makefile.am
> >> > +++ b/c/src/lib/libbsp/arm/raspberrypi/Makefile.am
> >> > @@ -63,14 +63,15 @@ 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
> >> >
> >>
> > _______________________________________________
> > devel mailing list
> > devel at rtems.org <mailto:devel at rtems.org>
> > http://lists.rtems.org/mailman/listinfo/devel
> >
>
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