* [ECOS] Adding 16550 drivers to the EB40a target
@ 2003-09-16 15:11 Øyvind Harboe
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From: Øyvind Harboe @ 2003-09-16 15:11 UTC (permalink / raw)
To: 'ecos-discuss (E-Mail)'
[-- Attachment #1: Type: text/plain, Size: 477 bytes --]
I'm trying to configure drivers for an opencores.org 16550
UART to EB40a when I ran into the following problem:
io/serial seems to assume that there is only one
type of serial ports in the system, e.g. only
one module can define CYGDAT_IO_SERIAL_DEVICE_HEADER.
The discussion below has some helpful pointers:
http://sources.redhat.com/ml/ecos-discuss/2003-09/msg00199.html
Surely eCos supports both AT91 and 16550 serial drivers
at the same time?
Øyvind
[-- Attachment #2: ser_opencores.cdl --]
[-- Type: application/octet-stream, Size: 7061 bytes --]
# ====================================================================
#
# ser_i386_pc.cdl
#
# eCos serial PC configuration data
#
# ====================================================================
#####ECOSGPLCOPYRIGHTBEGIN####
## -------------------------------------------
## This file is part of eCos, the Embedded Configurable Operating System.
## Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc.
##
## eCos is free software; you can redistribute it and/or modify it under
## the terms of the GNU General Public License as published by the Free
## Software Foundation; either version 2 or (at your option) any later version.
##
## eCos is distributed in the hope that it will be useful, but WITHOUT ANY
## WARRANTY; without even the implied warranty of MERCHANTABILITY or
## FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
## for more details.
##
## You should have received a copy of the GNU General Public License along
## with eCos; if not, write to the Free Software Foundation, Inc.,
## 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
##
## As a special exception, if other files instantiate templates or use macros
## or inline functions from this file, or you compile this file and link it
## with other works to produce a work based on this file, this file does not
## by itself cause the resulting work to be covered by the GNU General Public
## License. However the source code for this file must still be made available
## in accordance with section (3) of the GNU General Public License.
##
## This exception does not invalidate any other reasons why a work based on
## this file might be covered by the GNU General Public License.
##
## Alternative licenses for eCos may be arranged by contacting Red Hat, Inc.
## at http://sources.redhat.com/ecos/ecos-license/
## -------------------------------------------
#####ECOSGPLCOPYRIGHTEND####
# ====================================================================
######DESCRIPTIONBEGIN####
#
# Author(s): jlarmour, nickg, gthomas, pjo
# Original data:
# Contributors: jskov
# Date: 2001-06-08
#
#####DESCRIPTIONEND####
#
# ====================================================================
cdl_package CYGPKG_IO_SERIAL_OPENCORES_16550 {
display "Opencores.org 16550 serial device drivers"
parent CYGPKG_IO_SERIAL_DEVICES
active_if CYGPKG_IO_SERIAL
requires CYGPKG_ERROR
include_dir cyg/io
description "
This option enables the serial device drivers for the
PC."
# FIXME: This really belongs in the GENERIC_16X5X package
cdl_interface CYGINT_IO_SERIAL_GENERIC_16X5X_REQUIRED {
display "Generic 16x5x serial driver required"
}
define_proc {
puts $::cdl_header "#define CYGPRI_IO_SERIAL_GENERIC_16X5X_STEP 2"
}
define_proc {
puts $::cdl_system_header "/***** serial driver proc output start *****/"
puts $::cdl_system_header "#define CYGDAT_IO_SERIAL_GENERIC_16X5X_INL <cyg/io/ser_opencores.inl>"
puts $::cdl_system_header "#define CYGDAT_IO_SERIAL_GENERIC_16X5X_CFG <pkgconf/io_serial_opencores_16550.h>"
puts $::cdl_system_header "/***** serial driver proc output end *****/"
}
cdl_component CYGPKG_IO_SERIAL_OPENCORES_16550_SERIAL0 {
display "Opencores serial port 0 driver"
flavor bool
default_value 1
description "
This option includes the serial device driver for port 0."
implements CYGINT_IO_SERIAL_GENERIC_16X5X_REQUIRED
implements CYGINT_IO_SERIAL_FLOW_CONTROL_HW
implements CYGINT_IO_SERIAL_LINE_STATUS_HW
cdl_option CYGDAT_IO_SERIAL_OPENCORES_16550_SERIAL0_NAME {
display "Device name for opencores.org 16550 serial port 0"
flavor data
default_value {"\"/dev/ser2\""}
description "
This option specifies the device name port 0."
}
cdl_option CYGNUM_IO_SERIAL_OPENCORES_16550_SERIAL0_BAUD {
display "Baud rate for the PC serial port 0 driver"
flavor data
legal_values { 50 75 110 "134_5" 150 200 300 600 1200 1800 2400 3600
4800 7200 9600 14400 19200 38400 57600 115200 230400
}
default_value 38400
description "
This option specifies the default baud rate (speed) for the
PC port 0."
}
cdl_option CYGNUM_IO_SERIAL_OPENCORES_16550_SERIAL0_BUFSIZE {
display "Buffer size for the PC serial port 0 driver"
flavor data
legal_values 0 to 8192
default_value 128
description "
This option specifies the size of the internal buffers used
for the PC port 0."
}
cdl_option CYGNUM_IO_SERIAL_OPENCORES_16550_SERIAL0_IOBASE {
display "I/O base address for the UART serial port 0"
flavor data
legal_values 0 to 0xFFFFFFFF
default_value 0x3F8
description "
This option specifies the I/O address of the 8250 or 16550 for serial port 0."
}
cdl_option CYGNUM_IO_SERIAL_OPENCORES_16550_SERIAL0_IRQ {
display "IRQ for the serial port 0"
flavor data
legal_values 0 to 15
default_value 4
description "
This option specifies the IRQ of the 8250 or 16550 for serial port 0."
}
cdl_option CYGNUM_IO_SERIAL_OPENCORES_16550_SERIAL0_INT {
display "INT for the i386-PC serial port 0"
flavor data
legal_values 32 to 47
default_value { CYGNUM_IO_SERIAL_OPENCORES_16550_SERIAL0_IRQ + 32 }
description "
This option specifies the interrupt vector of the 8250 or 16550 for serial port 0."
}
}
cdl_component CYGPKG_IO_SERIAL_OPENCORES_16550_OPTIONS {
display "Serial device driver build options"
flavor none
description "
Package specific build options including control over
compiler flags used only in building this package,
and details of which tests are built."
cdl_option CYGPKG_IO_SERIAL_OPENCORES_16550_CFLAGS_ADD {
display "Additional compiler flags"
flavor data
no_define
default_value { "" }
description "
This option modifies the set of compiler flags for
building these serial device drivers. These flags are used in addition
to the set of global flags."
}
cdl_option CYGPKG_IO_SERIAL_OPENCORES_16550_CFLAGS_REMOVE {
display "Suppressed compiler flags"
flavor data
no_define
default_value { "" }
description "
This option modifies the set of compiler flags for
building these serial device drivers. These flags are removed from
the set of global flags if present."
}
}
}
# EOF ser_i386_pc.cdl
[-- Attachment #3: ser_opencores.inl --]
[-- Type: application/octet-stream, Size: 5291 bytes --]
//==========================================================================
//
// io/serial/i386/pc/i386_pc_ser.inl
//
// i386 PC Serial I/O Interface Module (interrupt driven)
// for use with 8250s or 16550s.
//
//==========================================================================
//####ECOSGPLCOPYRIGHTBEGIN####
// -------------------------------------------
// This file is part of eCos, the Embedded Configurable Operating System.
// Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc.
//
// eCos is free software; you can redistribute it and/or modify it under
// the terms of the GNU General Public License as published by the Free
// Software Foundation; either version 2 or (at your option) any later version.
//
// eCos is distributed in the hope that it will be useful, but WITHOUT ANY
// WARRANTY; without even the implied warranty of MERCHANTABILITY or
// FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
// for more details.
//
// You should have received a copy of the GNU General Public License along
// with eCos; if not, write to the Free Software Foundation, Inc.,
// 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
//
// As a special exception, if other files instantiate templates or use macros
// or inline functions from this file, or you compile this file and link it
// with other works to produce a work based on this file, this file does not
// by itself cause the resulting work to be covered by the GNU General Public
// License. However the source code for this file must still be made available
// in accordance with section (3) of the GNU General Public License.
//
// This exception does not invalidate any other reasons why a work based on
// this file might be covered by the GNU General Public License.
//
// Alternative licenses for eCos may be arranged by contacting Red Hat, Inc.
// at http://sources.redhat.com/ecos/ecos-license/
// -------------------------------------------
//####ECOSGPLCOPYRIGHTEND####
//==========================================================================
//#####DESCRIPTIONBEGIN####
//
// Author(s): jlarmour
// Contributors:
// Date: 2001-06-08
// Purpose: PC Serial I/O module (interrupt driven version)
// Description:
//
//####DESCRIPTIONEND####
//
//==========================================================================
#include <cyg/hal/hal_intr.h>
//-----------------------------------------------------------------------------
// Baud rate specification, based on raw 24MHz clock
static unsigned short select_baud[] = {
0, // Unused
2304, // 50
1536, // 75
1047, // 110
857, // 134.5
768, // 150
576, // 200
384, // 300
192, // 600
96, // 1200
64, // 1800
48, // 2400
32, // 3600
24, // 4800
16, // 7200
12, // 9600
8, // 14400
6, // 19200
3, // 38400
2, // 57600
1, // 115200
0, // 230400
};
#ifdef CYGPKG_IO_SERIAL_OPENCORES_16550_SERIAL0
#error "def"
static pc_serial_info pc_serial_info0 = {CYGNUM_IO_SERIAL_OPENCORES_16550_SERIAL0_IOBASE,
CYGNUM_IO_SERIAL_OPENCORES_16550_SERIAL0_INT};
#if CYGNUM_IO_SERIAL_OPENCORES_16550_SERIAL0_BUFSIZE > 0
static unsigned char pc_serial_out_buf0[CYGNUM_IO_SERIAL_OPENCORES_16550_SERIAL0_BUFSIZE];
static unsigned char pc_serial_in_buf0[CYGNUM_IO_SERIAL_OPENCORES_16550_SERIAL0_BUFSIZE];
static SERIAL_CHANNEL_USING_INTERRUPTS(pc_serial_channel0,
pc_serial_funs,
pc_serial_info0,
CYG_SERIAL_BAUD_RATE(CYGNUM_IO_SERIAL_OPENCORES_16550_SERIAL0_BAUD),
CYG_SERIAL_STOP_DEFAULT,
CYG_SERIAL_PARITY_DEFAULT,
CYG_SERIAL_WORD_LENGTH_DEFAULT,
CYG_SERIAL_FLAGS_DEFAULT,
&pc_serial_out_buf0[0], sizeof(pc_serial_out_buf0),
&pc_serial_in_buf0[0], sizeof(pc_serial_in_buf0)
);
#else
static SERIAL_CHANNEL(pc_serial_channel0,
pc_serial_funs,
pc_serial_info0,
CYG_SERIAL_BAUD_RATE(CYGNUM_IO_SERIAL_OPENCORES_16550_SERIAL0_BAUD),
CYG_SERIAL_STOP_DEFAULT,
CYG_SERIAL_PARITY_DEFAULT,
CYG_SERIAL_WORD_LENGTH_DEFAULT,
CYG_SERIAL_FLAGS_DEFAULT
);
#endif
DEVTAB_ENTRY(pc_serial_io0,
CYGDAT_IO_SERIAL_OPENCORES_16550_SERIAL0_NAME,
0, // Does not depend on a lower level interface
&cyg_io_serial_devio,
pc_serial_init,
pc_serial_lookup, // Serial driver may need initializing
&pc_serial_channel0
);
#endif // CYGPKG_IO_SERIAL_OPENCORES_16550_SERIAL0
// EOF i386_pc_ser.inl
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2003-09-16 15:11 [ECOS] Adding 16550 drivers to the EB40a target Øyvind Harboe
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