initial version from Erik

4 files changed, 350 insertions, 0 deletions

diff --git a/c/src/lib/libbsp/i386/i386ex/startup/README b/c/src/lib/libbsp/i386/i386ex/startup/README
new file mode 100644
index 0000000000..44f8d1d63c
--- /dev/null
+++ b/c/src/lib/libbsp/i386/i386ex/startup/README
@@ -0,0 +1,25 @@
+
+
+	The doit shell file cd's to $H, which refers to the directory
+that contains the hello world test.  The console is a raw com port.  
+Certain test programs behave differently with different com port speeds.
+To test the programs, it is required that you hook up a terminal 
+( or minicom or procomm it doesn't really matter ) to the comm port of 
+the target hardware.  You must ensure that the baud rate, parity etc
+is set properly.  This is done on the target hardware within interns.s .
+( Set your terminal emulator to match. ) Currently, the settings
+are 9600,8,n,1 .
+
+The format and layout of the file interns.s is taken from the 
+intel ApBuilder software, freely distributed by Intel.  Some
+easy macros ( SetExRegByte and SetExRegWord ) are basically lifted
+from the Intel macros.  Similarly for the names of the IO ports.
+
+This "port" begain with the forceCPU bsp.  Hence I am sure that 
+there is some real trash that is not appropriate.  For example
+the act of copying the Interrupt Descriptor tables and Global
+descriptor tables "into our space". ( in start.s I think ) 
+
+Erik
+
+	
\ No newline at end of file
diff --git a/c/src/lib/libbsp/i386/i386ex/startup/bspstart.c b/c/src/lib/libbsp/i386/i386ex/startup/bspstart.c
new file mode 100644
index 0000000000..c6e0947988
--- /dev/null
+++ b/c/src/lib/libbsp/i386/i386ex/startup/bspstart.c
@@ -0,0 +1,160 @@
+/*  bsp_start()
+ *
+ *  This routine starts the application.  It includes application,
+ *  board, and monitor specific initialization and configuration.
+ *  The generic CPU dependent initialization has been performed
+ *  before this routine is invoked.
+ *
+ *  INPUT:  NONE
+ *
+ *  OUTPUT: NONE
+ *
+ *  COPYRIGHT (c) 1989, 1990, 1991, 1992, 1993, 1994.
+ *  On-Line Applications Research Corporation (OAR).
+ *  All rights assigned to U.S. Government, 1994.
+ *
+ *  This material may be reproduced by or for the U.S. Government pursuant
+ *  to the copyright license under the clause at DFARS 252.227-7013.  This
+ *  notice must appear in all copies of this file and its derivatives.
+ *
+ *  $Id$
+ */
+
+#include <rtems.h>
+#include <bsp.h>
+#include <libcsupport.h>
+
+#include <stackchk.h>
+
+#include <stdio.h>
+extern void outbyte(char);
+
+/*
+ *  The original table from the application and our copy of it with
+ *  some changes.
+ */
+
+extern rtems_configuration_table  Configuration;
+rtems_configuration_table  BSP_Configuration;
+
+rtems_cpu_table Cpu_table;
+
+/*      Initialize whatever libc we are using
+ *      called from postdriver hook
+ */
+
+void bsp_libc_init()
+{
+    extern int end;
+    rtems_unsigned32        heap_start;
+
+    heap_start = (rtems_unsigned32) &end;
+    if (heap_start & (CPU_ALIGNMENT-1))
+        heap_start = (heap_start + CPU_ALIGNMENT) & ~(CPU_ALIGNMENT-1);
+
+    RTEMS_Malloc_Initialize((void *) heap_start, 64 * 1024, 0);
+
+    /*
+     * Set up for the libc handling.
+     */
+
+    if (BSP_Configuration.ticks_per_timeslice > 0)
+        libc_init(1);                /* reentrant if possible */
+    else
+        libc_init(0);                /* non-reentrant */
+
+    /*
+     *  Initialize the stack bounds checker
+     */
+
+#ifdef STACK_CHECKER_ON
+    Stack_check_Initialize();
+#endif
+
+}
+extern char inbyte(void);
+extern void outbyte(char);
+
+int bsp_start(
+  int argc,
+  char **argv,
+  char **environp
+)
+{
+#ifdef PRINTON   
+
+  outbyte('a');
+  outbyte('b');
+  outbyte('c');
+  outbyte ('S');
+
+#endif
+
+  /*
+   *  we do not use the pretasking_hook.
+   */
+
+  Cpu_table.pretasking_hook = NULL;
+
+  Cpu_table.predriver_hook = bsp_libc_init;  /* RTEMS resources available */
+
+  Cpu_table.postdriver_hook = NULL;   /* Call our main() for constructors */
+
+  Cpu_table.idle_task = NULL;  /* do not override system IDLE task */
+
+  Cpu_table.do_zero_of_workspace = TRUE;
+
+  Cpu_table.interrupt_table_segment = get_ds();
+
+  Cpu_table.interrupt_table_offset = (void *)Interrupt_descriptor_table;
+
+  Cpu_table.interrupt_stack_size = 4096;
+
+  Cpu_table.extra_system_initialization_stack = 0;
+
+  /*
+   *  Copy the table
+   */
+
+  BSP_Configuration = Configuration;
+
+  BSP_Configuration.work_space_start = (void *)
+     RAM_END - BSP_Configuration.work_space_size;
+
+  
+
+#ifdef SPRINTON 
+  sprintf( x_buffer, "ram end : %u, work_space_size: %d\n", 
+           RAM_END ,  BSP_Configuration.work_space_size ); 
+  do {
+    outbyte ( x_buffer[i] );
+  } while ( x_buffer[i++] != '\n');
+#endif
+
+  /*
+   * Add 1 region for Malloc in libc_low
+   */
+
+  BSP_Configuration.maximum_regions++;
+
+  /*
+   * Add 1 extension for newlib libc
+   */
+
+#ifdef RTEMS_NEWLIB
+    BSP_Configuration.maximum_extensions++;
+#endif
+
+  /*
+   * Add another extension if using the stack checker
+   */
+
+#ifdef STACK_CHECKER_ON
+    BSP_Configuration.maximum_extensions++;
+#endif
+
+  rtems_initialize_executive( &BSP_Configuration, &Cpu_table );
+  /* does not return */
+  /* no cleanup necessary for Force CPU-386 */
+  for (;;);  /* was return 0 to go to the debug monitor */
+}
diff --git a/c/src/lib/libbsp/i386/i386ex/startup/linkcmds b/c/src/lib/libbsp/i386/i386ex/startup/linkcmds
new file mode 100644
index 0000000000..d8fe66f8bf
--- /dev/null
+++ b/c/src/lib/libbsp/i386/i386ex/startup/linkcmds
@@ -0,0 +1,106 @@
+/*
+ *  This file contains directives for the GNU linker which are specific
+ *  to the Intel 386ex evaluation board.
+ *
+ *  COPYRIGHT (c) 1989, 1990, 1991, 1992, 1993, 1994.
+ *  On-Line Applications Research Corporation (OAR).
+ *  All rights assigned to U.S. Government, 1994.
+ *
+ *  This material may be reproduced by or for the U.S. Government pursuant
+ *  to the copyright license under the clause at DFARS 252.227-7013.  This
+ *  notice must appear in all copies of this file and its derivatives.
+ *
+ *  linkcmds,v 1.0 1995/11/30 16:52:02 Erik Ivanenko
+ */
+
+
+	ENTRY(reset) ;
+SECTIONS
+{
+	_rom_ints = 0x3fb0000;
+	.ints 0x0100 :
+	AT ( _rom_ints )          /* was 0x3fb3300 */
+	{
+	_sints = .;
+	*(.ints);
+	_eints = ALIGN (0x010);
+	}	
+	_cs4_ints_segment   = 0x0010 ;   
+	_cs4_ints_offset    = 0x0000 ;       
+	_cs6_t_ints_segment = 0xF000 ; /* was 0xF000 */ 
+	_cs6_t_ints_offset  = 0x0000 ; /* was 0x3300 */
+	_cs6_t_ints_size    = _eints - _sints ;
+
+        _rom_gdt = _rom_ints + _cs6_t_ints_size;
+	.gdt  0x1000  :
+        AT ( _rom_gdt )
+	{
+	_sgdt = .;
+	*(.gdt);
+	_egdt = ALIGN (0x10);
+	}
+	_cs4_gdt_segment   = 0x0100 ; /* evaluates to  0x1000 */
+	_cs4_gdt_offset    = 0x0000 ;
+	_cs6_t_gdt_segment = 0xF000;
+	_cs6_t_gdt_offset  = _cs6_t_ints_size;  /* was 0x0 */
+	_cs6_t_gdt_size    = _egdt - _sgdt;
+
+        _rom_idt = _rom_gdt + _cs6_t_gdt_size + _cs6_t_ints_size ;
+	.idt 0x1200 :
+	AT ( _rom_idt )
+	{
+	_sidt = .;
+	*(.idt);
+	_eidt = ALIGN (0x10);
+	}
+ 	_cs4_idt_segment	= 0x0120;
+	_cs4_idt_offset		= 0x0000 ;
+	_cs6_t_idt_segment	= 0xF000 ;
+	_cs6_t_idt_offset   	= _cs6_t_ints_size + _cs6_t_gdt_size ; /* was 0x1000 */
+	_cs6_t_idt_size		= _eidt - _sidt;
+
+	_rom_data_start = _rom_idt + _cs6_t_idt_size ;
+        .data : 
+        AT ( _rom_data_start )       /* was 0x3fd0000 */
+        {
+        _sdata = .;
+        *(.data);
+        _edata = ALIGN( 0x10 ) ;
+   	}
+        _data_start       = ADDR(.data) ;
+        _data_size        = _edata - _sdata ;
+	_edata            = _data_start + _data_size ;
+
+	.bss :
+	{
+	_bss_start = .;
+	*(.bss);
+	*(COMMON);
+	_ebss = ALIGN(0x10);
+	end = _ebss;
+	_end = end;
+	__end = end;
+	}
+        _bss_size = _ebss - _bss_start ;
+
+        
+        .text ( 0x3f80000 ):
+        {
+        _text_start = . ;
+        *(.text ) ;
+        _etext = ALIGN( 0x10 ); 
+        }
+
+	.initial  0x3ff1000:
+	{
+	*(.initial);
+	}
+
+	.reset    0x3fffff0:
+	{
+	*(.reset);
+        }
+}
+
+
+
diff --git a/c/src/lib/libbsp/i386/i386ex/startup/setvec.c b/c/src/lib/libbsp/i386/i386ex/startup/setvec.c
new file mode 100644
index 0000000000..e8195c0733
--- /dev/null
+++ b/c/src/lib/libbsp/i386/i386ex/startup/setvec.c
@@ -0,0 +1,59 @@
+/*  set_vector
+ *
+ *  This routine installs an interrupt vector on the Force CPU-386.
+ *
+ *  INPUT:
+ *    handler - interrupt handler entry point
+ *    vector  - vector number
+ *    type    - 0 indicates raw hardware connect
+ *              1 indicates RTEMS interrupt connect
+ *
+ *  RETURNS:
+ *    address of previous interrupt handler
+ *
+ *  COPYRIGHT (c) 1989, 1990, 1991, 1992, 1993, 1994.
+ *  On-Line Applications Research Corporation (OAR).
+ *  All rights assigned to U.S. Government, 1994.
+ *
+ *  This material may be reproduced by or for the U.S. Government pursuant
+ *  to the copyright license under the clause at DFARS 252.227-7013.  This
+ *  notice must appear in all copies of this file and its derivatives.
+ *
+ *  $Id$
+ */
+
+#include <rtems.h>
+#include <bsp.h>
+
+i386_isr_entry set_vector(                      /* returns old vector */
+  rtems_isr_entry     handler,                  /* isr routine        */
+  rtems_vector_number vector,                   /* vector number      */
+  int                 type                      /* RTEMS or RAW intr  */
+)
+{
+  i386_isr_entry previous_isr;
+  i386_IDT_slot  idt;
+
+  if ( type )
+    rtems_interrupt_catch( handler, vector, (rtems_isr_entry *) &previous_isr );
+  else {
+    /* get the address of the old handler */
+
+    idt = Interrupt_descriptor_table[ vector ];
+
+    previous_isr = (i386_isr_entry)
+                      ((idt.offset_16_31 << 16) | idt.offset_0_15);
+
+    /* build the IDT entry */
+    idt.offset_0_15      = ((rtems_unsigned32) handler) & 0xffff;
+    idt.segment_selector = get_cs();
+    idt.reserved         = 0x00;
+    idt.p_dpl            = 0x8e;         /* present, ISR */
+    idt.offset_16_31     = ((rtems_unsigned32) handler) >> 16;
+
+    /* install the IDT entry */
+    Interrupt_descriptor_table[ vector ] = idt;
+  }
+  return previous_isr;
+}
+