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Patch from John Cotton <john.cotton@nrc.ca>, Charles-Antoine Gauthier

Browse Source 
<charles.gauthier@iit.nrc.ca>, and Darlene A. Stewart
<Darlene.Stewart@nrc.ca> to add support for a number of very
significant things:

  + BSPs for many variations on the Motorola MBX8xx board series
  + Cache Manager including initial support for m68040
    and PowerPC
  + Rework of mpc8xx libcpu code so all mpc8xx CPUs now use
    same code base.
  + Rework of eth_comm BSP to utiltize above.

John reports this works on the 821 and 860.
This commit is contained in:
Joel Sherrill
2000-06-12 21:34:51 +00:00
parent edc61d488b
commit 3ab61f0a35
43 changed files with 0 additions and 7762 deletions
Download Patch File Download Diff File Expand all files Collapse all files
c/src/exec/score/cpu/powerpc/old_exception_processing/ppccache.c
-61
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@@ -1,61 +0,0 @@
/*
* PowerPC Cache enable routines
*
* $Id$
*/
#include <rtems/system.h>
#define PPC_Get_HID0( _value ) \
do { \
_value = 0; /* to avoid warnings */ \
asm volatile( \
"mfspr %0, 0x3f0;" /* get HID0 */ \
"isync" \
: "=r" (_value) \
: "0" (_value) \
); \
} while (0)
#define PPC_Set_HID0( _value ) \
do { \
asm volatile( \
"isync;" \
"mtspr 0x3f0, %0;" /* load HID0 */ \
"isync" \
: "=r" (_value) \
: "0" (_value) \
); \
} while (0)
void powerpc_instruction_cache_enable ()
{
unsigned32 value;
/*
* Enable the instruction cache
*/
PPC_Get_HID0( value );
value |= 0x00008000; /* Set ICE bit */
PPC_Set_HID0( value );
}
void powerpc_data_cache_enable ()
{
unsigned32 value;
/*
* enable data cache
*/
PPC_Get_HID0( value );
value |= 0x00004000; /* set DCE bit */
PPC_Set_HID0( value );
}
c/src/lib/libbsp/m68k/mvme167/startup/elflinkcmds
-214
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@@ -1,214 +0,0 @@
/*
* This file contains directives for the GNU linker which are specific
* to the Motorola MVME167 board. This linker script produces ELF
* executables.
*
* Copyright (c) 1999, National Research Council of Canada.
* Some of this material was copied from binutils-2.9.4 linker scripts,
* and is therefore likely to be copyrighted by the Free Software
* Foundation, even though explicit copyright notices did not appear in
* those files.
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.OARcorp.com/rtems/license.html.
*
* $Id$
*/
/* These are not really needed here */
OUTPUT_FORMAT("elf32-m68k")
OUTPUT_ARCH(m68k)
ENTRY(_start)
/*
* Declare some sizes.
*/
_HeapSize = DEFINED(_HeapSize) ? _HeapSize : 0x10000;
_StackSize = DEFINED(_StackSize) ? _StackSize : 0x1000;
MEMORY
{
/* The location of RAM is the address space is configurable.
This is where we put one board. The base address should be
passed as a parameter when building multiprocessor images
where each board resides at a different address. */
ram : org = 0x00800000, l = 4M
rom : org = 0xFF800000, l = 4M
sram : org = 0xFFE00000, l = 128K
}
SECTIONS
{
/*
* We want the entry point to be the first thing in memory.
* Merge all read-only data into the .text section.
*/
.text 0x00800000 :
{
text_start = . ;
*(.text)
*(.text.*)
*(.stub)
/* C++ constructors/destructors */
*(.gnu.linkonce.t*)
/* Initialization and finalization code.
*
* Various files can provide initialization and finalization functions.
* crtbegin.o and crtend.o are two instances. The body of these functions
* are in .init and .fini sections. We accumulate the bodies here, and
* prepend function prologues from crti.o and function epilogues from
* crtn.o. crti.o must be linked first; crtn.o must be linked last.
* Because these are wildcards, it doesn't matter if the user does not
* actually link against crti.o and crtn.o; the linker won't look for a
* file to match a wildcard. The wildcard also means that it doesn't
* matter which directory crti.o and crtn.o are in.
*/
PROVIDE (_init = .);
*crti.o(.init)
*(.init)
*crtn.o(.init)
PROVIDE (_fini = .);
*crti.o(.fini)
*(.fini)
*crtn.o(.init)
. = ALIGN (16);
/* C++ constructors and destructors for static objects.
*
* gcc uses crtbegin.o to find the start of the constructors and
* destructors so we make sure it is first. Because this is a wildcard,
* it doesn't matter if the user does not actually link against
* crtbegin.o; the linker won't look for a file to match a wildcard. The
* wildcard also means that it doesn't matter which directory crtbegin.o
* is in. The constructor and destructor list are terminated in crtend.o.
* The same comments apply to it.
*/
PROVIDE (__CTOR_LIST__ = .);
*crtbegin.o(.ctors)
*(.ctors)
*crtend.o(.ctors)
PROVIDE (__CTOR_END__ = .);
PROVIDE (__DTOR_LIST__ = .);
*crtbegin.o(.dtors)
*(.dtors)
*crtend.o(.dtors)
PROVIDE (__DTOR_END__ = .);
. = ALIGN (16);
/* Exception frame info */
*(.eh_frame)
. = ALIGN (16);
/* Do we have any of these with egcs-1.x and higher? */
*(.gcc_exc)
. = ALIGN (16);
_rodata_start = . ;
*(.rodata)
*(.rodata.*)
*(.gnu.linkonce.r*)
*(.rodata1)
_erodata = .;
_etext = .;
PROVIDE (etext = .);
} >ram =0x4e75
. = ALIGN (16);
.data :
{
data_start = .;
*(.data)
*(.data.*)
*(.data1)
*(.sdata)
*(.gnu.linkonce.d*)
*(.gcc_except_table)
. = ALIGN (16);
_edata = .;
PROVIDE (edata = .);
} >ram
.bss :
{
bss_start = .;
*(.dynbss)
*(.bss)
*(COMMON)
*(.sbss)
*(.scommon)
. = ALIGN (16);
_end = .;
PROVIDE (end = .);
} >ram
_HeapStart = .;
. += HeapSize; /* XXX -- Old gld can't handle this */
_HeapEnd = .;
_StackStart = .;
. += _StackSize; /* XXX -- Old gld can't handle this */
/* . += 0x10000; */ /* HeapSize for old gld */
/* . += 0x1000; */ /* _StackSize for old gld */
. = ALIGN (16);
_StackEnd = .;
stack_init = .;
clear_end = .;
_WorkspaceBase = .;
/* Stabs debugging sections. */
.stab 0 : { *(.stab) }
.stabstr 0 : { *(.stabstr) }
.stab.excl 0 : { *(.stab.excl) }
.stab.exclstr 0 : { *(.stab.exclstr) }
.stab.index 0 : { *(.stab.index) }
.stab.indexstr 0 : { *(.stab.indexstr) }
.comment 0 : { *(.comment) }
/* DWARF debug sections.
Symbols in the DWARF debugging sections are relative to the beginning
of the section so we begin them at 0. */
/* DWARF 1 */
.debug 0 : { *(.debug) }
.line 0 : { *(.line) }
/* GNU DWARF 1 extensions */
.debug_srcinfo 0 : { *(.debug_srcinfo) }
.debug_sfnames 0 : { *(.debug_sfnames) }
/* DWARF 1.1 and DWARF 2 */
.debug_aranges 0 : { *(.debug_aranges) }
.debug_pubnames 0 : { *(.debug_pubnames) }
/* DWARF 2 */
.debug_info 0 : { *(.debug_info) }
.debug_abbrev 0 : { *(.debug_abbrev) }
.debug_line 0 : { *(.debug_line) }
.debug_frame 0 : { *(.debug_frame) }
.debug_str 0 : { *(.debug_str) }
.debug_loc 0 : { *(.debug_loc) }
.debug_macinfo 0 : { *(.debug_macinfo) }
/* SGI/MIPS DWARF 2 extensions */
.debug_weaknames 0 : { *(.debug_weaknames) }
.debug_funcnames 0 : { *(.debug_funcnames) }
.debug_typenames 0 : { *(.debug_typenames) }
.debug_varnames 0 : { *(.debug_varnames) }
/* These must appear regardless of . */
}
c/src/lib/libbsp/powerpc/eth_comm/startup/alloc860.c
-117
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@@ -1,117 +0,0 @@
/*
* MPC860 buffer descriptor allocation routines
*
* Modified from original code by Jay Monkman (jmonkman@frasca.com)
*
* Original was written by:
* W. Eric Norum
* Saskatchewan Accelerator Laboratory
* University of Saskatchewan
* Saskatoon, Saskatchewan, CANADA
* eric@skatter.usask.ca
*
* $Id$
*/
#include <rtems.h>
#include <bsp.h>
#include <rtems/rtems/intr.h>
#include <rtems/error.h>
#include <mpc860.h>
#include <info.h>
/*
* Send a command to the CPM RISC processer
*/
void M860ExecuteRISC(rtems_unsigned16 command)
{
rtems_unsigned16 lvl;
rtems_interrupt_disable(lvl);
while (m860.cpcr & M860_CR_FLG) {
continue;
}
m860.cpcr = command | M860_CR_FLG;
rtems_interrupt_enable (lvl);
}
/*
* Allocation order:
* - Dual-Port RAM section 0
* - Dual-Port RAM section 1
* - Dual-Port RAM section 2
* - Dual-Port RAM section 3
* - Dual-Port RAM section 4
*/
static struct {
char *base;
unsigned int size;
unsigned int used;
} bdregions[] = {
{ (char *)&m860.dpram0[0], sizeof m860.dpram0, 0 },
{ (char *)&m860.dpram1[0], sizeof m860.dpram1, 0 },
{ (char *)&m860.dpram2[0], sizeof m860.dpram2, 0 },
{ (char *)&m860.dpram3[0], sizeof m860.dpram3, 0 },
{ (char *)&m860.dpram4[0], sizeof m860.dpram4, 0 },
};
void *
M860AllocateBufferDescriptors (int count)
{
unsigned int i;
ISR_Level level;
void *bdp = NULL;
unsigned int want = count * sizeof(m860BufferDescriptor_t);
/*
* Running with interrupts disabled is usually considered bad
* form, but this routine is probably being run as part of an
* initialization sequence so the effect shouldn't be too severe.
*/
_ISR_Disable (level);
for (i = 0 ; i < sizeof(bdregions) / sizeof(bdregions[0]) ; i++) {
/*
* Verify that the region exists.
* This test is necessary since some chips have
* less dual-port RAM.
*/
if (bdregions[i].used == 0) {
volatile unsigned char *cp = bdregions[i].base;
*cp = 0xAA;
if (*cp != 0xAA) {
bdregions[i].used = bdregions[i].size;
continue;
}
*cp = 0x55;
if (*cp != 0x55) {
bdregions[i].used = bdregions[i].size;
continue;
}
*cp = 0x0;
}
if (bdregions[i].size - bdregions[i].used >= want) {
bdp = bdregions[i].base + bdregions[i].used;
bdregions[i].used += want;
break;
}
}
_ISR_Enable(level);
if (bdp == NULL)
rtems_panic("Can't allocate %d buffer descriptor(s).\n", count);
return bdp;
}
void *
M860AllocateRiscTimers (int count)
{
/*
* Convert the count to the number of buffer descriptors
* of equal or larger size. This ensures that all buffer
* descriptors are allocated with appropriate alignment.
*/
return M860AllocateBufferDescriptors (((count * 4) +
sizeof(m860BufferDescriptor_t) - 1) /
sizeof(m860BufferDescriptor_t));
}
c/src/lib/libbsp/powerpc/eth_comm/startup/mmu.c
-128
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@@ -1,128 +0,0 @@
/*
* mmu.c - this file contains functions for initializing the MMU
*
* Written by Jay Monkman (jmonkman@frasca.com)
*
* $Id$
*/
#include <bsp.h>
#include <mpc860.h>
/* Macros for handling all the MMU SPRs */
#define PUT_MI_CTR(r) __asm__ volatile ("mtspr 0x310,%0\n" ::"r"(r))
#define GET_MI_CTR(r) __asm__ volatile ("mfspr %0,0x310\n" :"=r"(r))
#define PUT_MD_CTR(r) __asm__ volatile ("mtspr 0x318,%0\n" ::"r"(r))
#define GET_MD_CTR(r) __asm__ volatile ("mfspr %0,0x318\n" :"=r"(r))
#define PUT_M_CASID(r) __asm__ volatile ("mtspr 0x319,%0\n" ::"r"(r))
#define GET_M_CASID(r) __asm__ volatile ("mfspr %0,0x319\n" :"=r"(r))
#define PUT_MI_EPN(r) __asm__ volatile ("mtspr 0x313,%0\n" ::"r"(r))
#define GET_MI_EPN(r) __asm__ volatile ("mfspr %0,0x313\n" :"=r"(r))
#define PUT_MI_TWC(r) __asm__ volatile ("mtspr 0x315,%0\n" ::"r"(r))
#define GET_MI_TWC(r) __asm__ volatile ("mfspr %0,0x315\n" :"=r"(r))
#define PUT_MI_RPN(r) __asm__ volatile ("mtspr 0x316,%0\n" ::"r"(r))
#define GET_MI_RPN(r) __asm__ volatile ("mfspr %0,0x316\n" :"=r"(r))
#define PUT_MD_EPN(r) __asm__ volatile ("mtspr 0x313,%0\n" ::"r"(r))
#define GET_MD_EPN(r) __asm__ volatile ("mfspr %0,0x313\n" :"=r"(r))
#define PUT_M_TWB(r) __asm__ volatile ("mtspr 0x31c,%0\n" ::"r"(r))
#define GET_M_TWB(r) __asm__ volatile ("mfspr %0,0x31c\n" :"=r"(r))
#define PUT_MD_TWC(r) __asm__ volatile ("mtspr 0x31d,%0\n" ::"r"(r))
#define GET_MD_TWC(r) __asm__ volatile ("mfspr %0,0x31d\n" :"=r"(r))
#define PUT_MD_RPN(r) __asm__ volatile ("mtspr 0x31e,%0\n" ::"r"(r))
#define GET_MD_RPN(r) __asm__ volatile ("mfspr %0,0x31e\n" :"=r"(r))
#define PUT_MI_AP(r) __asm__ volatile ("mtspr 0x312,%0\n" ::"r"(r))
#define GET_MI_AP(r) __asm__ volatile ("mfspr %0,0x312\n" :"=r"(r))
#define PUT_MD_AP(r) __asm__ volatile ("mtspr 0x31a,%0\n" ::"r"(r))
#define GET_MD_AP(r) __asm__ volatile ("mfspr %0,0x31a\n" :"=r"(r))
#define PUT_M_TW(r) __asm__ volatile ("mtspr 0x31f,%0\n" ::"r"(r))
#define GET_M_TW(r) __asm__ volatile ("mfspr %0,0x31f\n" :"=r"(r))
#define PUT_MI_DCAM(r) __asm__ volatile ("mtspr 0x330,%0\n" ::"r"(r))
#define GET_MI_DCAM(r) __asm__ volatile ("mfspr %0,0x330\n" :"=r"(r))
#define PUT_MI_DRAM0(r) __asm__ volatile ("mtspr 0x331,%0\n" ::"r"(r))
#define GET_MI_DRAM0(r) __asm__ volatile ("mfspr %0,0x331\n" :"=r"(r))
#define PUT_MI_DRAM1(r) __asm__ volatile ("mtspr 0x332,%0\n" ::"r"(r))
#define GET_MI_DRAM1(r) __asm__ volatile ("mfspr %0,0x332\n" :"=r"(r))
#define PUT_MD_DCAM(r) __asm__ volatile ("mtspr 0x338,%0\n" ::"r"(r))
#define GET_MD_DCAM(r) __asm__ volatile ("mfspr %0,0x338\n" :"=r"(r))
#define PUT_MD_DRAM0(r) __asm__ volatile ("mtspr 0x339,%0\n" ::"r"(r))
#define GET_MD_DRAM0(r) __asm__ volatile ("mfspr %0,0x339\n" :"=r"(r))
#define PUT_MD_DRAM1(r) __asm__ volatile ("mtspr 0x33a,%0\n" ::"r"(r))
#define GET_MD_DRAM1(r) __asm__ volatile ("mfspr %0,0x33a\n" :"=r"(r))
#define PUT_IC_CST(r) __asm__ volatile ("mtspr 0x230,%0\n" ::"r"(r))
#define GET_IC_CST(r) __asm__ volatile ("mfspr %0,0x230\n" :"=r"(r))
#define PUT_DC_CST(r) __asm__ volatile ("mtspr 0x238,%0\n" ::"r"(r))
#define GET_DC_CST(r) __asm__ volatile ("mfspr %0,0x238\n" :"=r"(r))
#define PUT_IC_ADR(r) __asm__ volatile ("mtspr 0x231,%0\n" ::"r"(r))
#define GET_IC_ADR(r) __asm__ volatile ("mfspr %0,0x231\n" :"=r"(r))
#define PUT_IC_DAT(r) __asm__ volatile ("mtspr 0x232,%0\n" ::"r"(r))
#define GET_IC_DAT(r) __asm__ volatile ("mfspr %0,0x232\n" :"=r"(r))
extern rtems_configuration_table BSP_Configuration;
void mmu_init(void)
{
register unsigned long t1, t2;
/* Let's clear MSR[IR] and MSR[DR] */
t2 = PPC_MSR_IR | PPC_MSR_DR;
__asm__ volatile (
"mfmsr %0\n"
"andc %0, %0, %1\n"
"mtmsr %0\n" :"=r"(t1), "=r"(t2):
"1"(t2));
/* Invalidate the TLBs */
__asm__ volatile ("tlbia\n"::);
__asm__ volatile ("isync\n"::);
/* make sure no TLB entries are reserved */
t1 = 0;
PUT_MI_CTR(t1);
t1 = M860_MD_CTR_TWAM; /* 4K pages */
/* PUT_MD_CTR(t1); */
t1 = M860_MI_EPN_VALID; /* make entry valid */
/* PUT_MD_EPN(t1); */
PUT_MI_EPN(t1);
t1 = M860_MI_TWC_PS8 | M860_MI_TWC_VALID; /* 8 MB pages, valid */
/* PUT_MD_TWC(t1); */
PUT_MI_TWC(t1);
t1 = M860_MD_RPN_CHANGE | M860_MD_RPN_F | M860_MD_RPN_16K |
M860_MD_RPN_SHARED | M860_MD_RPN_VALID;
/* PUT_MD_RPN(t1); */
PUT_MI_RPN(t1);
t1 = M860_MI_AP_Kp << 30;
PUT_MI_AP(t1);
/* PUT_MD_AP(t1); */
t1 = M860_CACHE_CMD_UNLOCK;
/* PUT_DC_CST(t1); */
PUT_IC_CST(t1);
t1 = M860_CACHE_CMD_INVALIDATE;
/* PUT_DC_CST(t1); */
PUT_IC_CST(t1);
t1 = M860_CACHE_CMD_ENABLE;
PUT_IC_CST(t1);
t1 = M860_CACHE_CMD_SFWT;
/* PUT_DC_CST(t1); */
t1 = M860_CACHE_CMD_ENABLE;
/* PUT_DC_CST(t1);*/
/* Let's set MSR[IR] */
t2 = PPC_MSR_IR;
__asm__ volatile (
"mfmsr %0\n"
"or %0, %0, %1\n"
"mtmsr %0\n" :"=r"(t1), "=r"(t2):
"1"(t2));
}
c/src/lib/libcpu/powerpc/mpc821/.cvsignore
-2
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@@ -1,2 +0,0 @@
Makefile
Makefile.in
c/src/lib/libcpu/powerpc/mpc821/Makefile.am
-10
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@@ -1,10 +0,0 @@
##
## $Id$
##
AUTOMAKE_OPTIONS = foreign 1.4
SUBDIRS = include console-generic clock timer vectors
include $(top_srcdir)/../../../../../automake/subdirs.am
include $(top_srcdir)/../../../../../automake/local.am
c/src/lib/libcpu/powerpc/mpc821/clock/.cvsignore
-2
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@@ -1,2 +0,0 @@
Makefile
Makefile.in
c/src/lib/libcpu/powerpc/mpc821/clock/Makefile.am
-29
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@@ -1,29 +0,0 @@
##
## $Id$
##
AUTOMAKE_OPTIONS = foreign 1.4
PGM = $(ARCH)/clock.rel
C_FILES = clock.c
clock_rel_OBJECTS = $(C_FILES:%.c=$(ARCH)/%.o)
include $(RTEMS_ROOT)/make/custom/@RTEMS_BSP@.cfg
include $(top_srcdir)/../../../../../automake/lib.am
#
# (OPTIONAL) Add local stuff here using +=
#
$(PGM): $(clock_rel_OBJECTS)
$(make-rel)
all-local: $(ARCH) $(clock_rel_OBJECTS) $(PGM)
.PRECIOUS: $(PGM)
EXTRA_DIST = clock.c
include $(top_srcdir)/../../../../../automake/local.am
c/src/lib/libcpu/powerpc/mpc821/clock/clock.c
-178
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@@ -1,178 +0,0 @@
/* clock.c
*
* This routine initializes the PIT on the MPC821.
* The tick frequency is specified by the bsp.
*
* Author: Jay Monkman (jmonkman@frasca.com)
* Copyright (C) 1998 by Frasca International, Inc.
*
* Derived from c/src/lib/libcpu/ppc/ppc403/clock/clock.c:
*
* Author: Andrew Bray <andy@i-cubed.co.uk>
*
* COPYRIGHT (c) 1995 by i-cubed ltd.
*
* To anyone who acknowledges that this file is provided "AS IS"
* without any express or implied warranty:
* permission to use, copy, modify, and distribute this file
* for any purpose is hereby granted without fee, provided that
* the above copyright notice and this notice appears in all
* copies, and that the name of i-cubed limited not be used in
* advertising or publicity pertaining to distribution of the
* software without specific, written prior permission.
* i-cubed limited makes no representations about the suitability
* of this software for any purpose.
*
* Derived from c/src/lib/libcpu/hppa1_1/clock/clock.c:
*
* COPYRIGHT (c) 1989-1999.
* On-Line Applications Research Corporation (OAR).
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.OARcorp.com/rtems/license.html.
*
* $Id$
*/
#include <clockdrv.h>
#include <rtems/libio.h>
#include <stdlib.h> /* for atexit() */
#include <mpc821.h>
volatile rtems_unsigned32 Clock_driver_ticks;
extern volatile m821_t m821;
void Clock_exit( void );
/*
* These are set by clock driver during its init
*/
rtems_device_major_number rtems_clock_major = ~0;
rtems_device_minor_number rtems_clock_minor;
/*
* ISR Handler
*/
rtems_isr Clock_isr(rtems_vector_number vector)
{
m821.piscr |= M821_PISCR_PS;
Clock_driver_ticks++;
rtems_clock_tick();
}
void Install_clock(rtems_isr_entry clock_isr)
{
rtems_isr_entry previous_isr;
rtems_unsigned32 pit_value;
Clock_driver_ticks = 0;
pit_value = rtems_configuration_get_microseconds_per_tick() /
rtems_cpu_configuration_get_clicks_per_usec();
if (pit_value == 0) {
pit_value = 0xffff;
} else {
pit_value--;
}
if (pit_value > 0xffff) { /* pit is only 16 bits long */
rtems_fatal_error_occurred(-1);
}
/*
* initialize the interval here
* First tick is set to right amount of time in the future
* Future ticks will be incremented over last value set
* in order to provide consistent clicks in the face of
* interrupt overhead
*/
rtems_interrupt_catch(clock_isr, PPC_IRQ_LVL0, &previous_isr);
m821.sccr &= ~(1<<24);
m821.pitc = pit_value;
/* set PIT irq level, enable PIT, PIT interrupts */
/* and clear int. status */
m821.piscr = M821_PISCR_PIRQ(0) |
M821_PISCR_PTE | M821_PISCR_PS | M821_PISCR_PIE;
m821.simask |= M821_SIMASK_LVM0;
atexit(Clock_exit);
}
void
ReInstall_clock(rtems_isr_entry new_clock_isr)
{
rtems_isr_entry previous_isr;
rtems_unsigned32 isrlevel = 0;
rtems_interrupt_disable(isrlevel);
rtems_interrupt_catch(new_clock_isr, PPC_IRQ_LVL0, &previous_isr);
rtems_interrupt_enable(isrlevel);
}
/*
* Called via atexit()
* Remove the clock interrupt handler by setting handler to NULL
*/
void
Clock_exit(void)
{
/* disable PIT and PIT interrupts */
m821.piscr &= ~(M821_PISCR_PTE | M821_PISCR_PIE);
(void) set_vector(0, PPC_IRQ_LVL0, 1);
}
rtems_device_driver Clock_initialize(
rtems_device_major_number major,
rtems_device_minor_number minor,
void *pargp
)
{
Install_clock( Clock_isr );
/*
* make major/minor avail to others such as shared memory driver
*/
rtems_clock_major = major;
rtems_clock_minor = minor;
return RTEMS_SUCCESSFUL;
}
rtems_device_driver Clock_control(
rtems_device_major_number major,
rtems_device_minor_number minor,
void *pargp
)
{
rtems_libio_ioctl_args_t *args = pargp;
if (args == 0)
goto done;
/*
* This is hokey, but until we get a defined interface
* to do this, it will just be this simple...
*/
if (args->command == rtems_build_name('I', 'S', 'R', ' ')) {
Clock_isr(PPC_IRQ_LVL0);
}
else if (args->command == rtems_build_name('N', 'E', 'W', ' ')) {
ReInstall_clock(args->buffer);
}
done:
return RTEMS_SUCCESSFUL;
}
c/src/lib/libcpu/powerpc/mpc821/console-generic/.cvsignore
-2
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@@ -1,2 +0,0 @@
Makefile
Makefile.in
c/src/lib/libcpu/powerpc/mpc821/console-generic/Makefile.am
-29
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@@ -1,29 +0,0 @@
##
## $Id$
##
AUTOMAKE_OPTIONS = foreign 1.4
PGM = $(ARCH)/console-generic.rel
C_FILES = console-generic.c
console_generic_rel_OBJECTS = $(C_FILES:%.c=$(ARCH)/%.o)
include $(RTEMS_ROOT)/make/custom/@RTEMS_BSP@.cfg
include $(top_srcdir)/../../../../../automake/lib.am
#
# (OPTIONAL) Add local stuff here using +=
#
$(PGM): $(console_generic_rel_OBJECTS)
$(make-rel)
all-local: $(ARCH) $(console_generic_rel_OBJECTS) $(PGM)
.PRECIOUS: $(PGM)
EXTRA_DIST = console-generic.c
include $(top_srcdir)/../../../../../automake/local.am
c/src/lib/libcpu/powerpc/mpc821/console-generic/console-generic.c
-834
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File diff suppressed because it is too large Load Diff
c/src/lib/libcpu/powerpc/mpc821/include/.cvsignore
-2
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@@ -1,2 +0,0 @@
Makefile
Makefile.in
c/src/lib/libcpu/powerpc/mpc821/include/Makefile.am
-21
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@@ -1,21 +0,0 @@
##
## $Id$
##
AUTOMAKE_OPTIONS = foreign 1.4
H_FILES = console.h mpc821.h
noinst_HEADERS = $(H_FILES)
TMPINSTALL_FILES += $(PROJECT_INCLUDE)/mpc821 \
$(H_FILES:%=$(PROJECT_INCLUDE)/mpc821/%)
$(PROJECT_INCLUDE)/mpc821:
$(mkinstalldirs) $@
$(PROJECT_INCLUDE)/mpc821/%.h: %.h
$(INSTALL_DATA) $< $@
all-local: $(TMPINSTALL_FILES)
include $(top_srcdir)/../../../../../automake/local.am
c/src/lib/libcpu/powerpc/mpc821/include/console.h
-44
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@@ -1,44 +0,0 @@
/*
* $Id$
*/
#ifndef _M821_CONSOLE_H_
#define _M821_CONSOLE_H_
#include <rtems/libio.h>
int m821_smc_set_attributes(int, const struct termios*);
int m821_scc_set_attributes(int, const struct termios*);
void m821_scc_initialize(int);
void m821_smc_initialize(int);
int m821_char_poll_read(int);
int m821_char_poll_write(int, const char*, int);
rtems_isr m821_scc1_console_interrupt_handler(rtems_vector_number);
rtems_isr m821_scc2_console_interrupt_handler(rtems_vector_number);
rtems_isr m821_smc1_console_interrupt_handler(rtems_vector_number);
rtems_isr m821_smc2_console_interrupt_handler(rtems_vector_number);
int m821_buf_poll_read(int, char**);
int m821_buf_poll_write(int, char*, int);
void m821_console_initialize(void);
rtems_device_driver m821_console_read(rtems_device_major_number,
rtems_device_minor_number,
void*);
rtems_device_driver m821_console_write(rtems_device_major_number,
rtems_device_minor_number,
void*);
typedef struct Buf_t_ {
struct Buf_t_ *next;
volatile char *buf;
volatile int len;
int pos;
} Buf_t;
#define SMC1_MINOR 0
#define SMC2_MINOR 1
#define SCC1_MINOR 2
#define SCC2_MINOR 3
#endif
c/src/lib/libcpu/powerpc/mpc821/include/mpc821.h
-1237
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c/src/lib/libcpu/powerpc/mpc821/timer/.cvsignore
-2
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@@ -1,2 +0,0 @@
Makefile
Makefile.in
c/src/lib/libcpu/powerpc/mpc821/timer/Makefile.am
-29
View File
@@ -1,29 +0,0 @@
##
## $Id$
##
AUTOMAKE_OPTIONS = foreign 1.4
PGM = $(ARCH)/timer.rel
C_FILES = timer.c
timer_rel_OBJECTS = $(C_FILES:%.c=$(ARCH)/%.o)
include $(RTEMS_ROOT)/make/custom/@RTEMS_BSP@.cfg
include $(top_srcdir)/../../../../../automake/lib.am
#
# (OPTIONAL) Add local stuff here using +=
#
$(PGM): $(timer_rel_OBJECTS)
$(make-rel)
all-local: $(ARCH) $(timer_rel_OBJECTS) $(PGM)
.PRECIOUS: $(PGM)
EXTRA_DIST = timer.c
include $(top_srcdir)/../../../../../automake/local.am
c/src/lib/libcpu/powerpc/mpc821/timer/timer.c
-100
View File
@@ -1,100 +0,0 @@
/* timer.c
*
* This file manages the interval timer on the PowerPC MPC821.
* NOTE: This is not the PIT, but rather the RTEMS interval
* timer
* We shall use the bottom 32 bits of the timebase register,
*
* The following was in the 403 version of this file. I don't
* know what it means. JTM 5/19/98
* NOTE: It is important that the timer start/stop overhead be
* determined when porting or modifying this code.
*
* Author: Jay Monkman (jmonkman@frasca.com)
* Copywright (C) 1998 by Frasca International, Inc.
*
* Derived from c/src/lib/libcpu/ppc/ppc403/timer/timer.c:
*
* Author: Andrew Bray <andy@i-cubed.co.uk>
*
* COPYRIGHT (c) 1995 by i-cubed ltd.
*
* To anyone who acknowledges that this file is provided "AS IS"
* without any express or implied warranty:
* permission to use, copy, modify, and distribute this file
* for any purpose is hereby granted without fee, provided that
* the above copyright notice and this notice appears in all
* copies, and that the name of i-cubed limited not be used in
* advertising or publicity pertaining to distribution of the
* software without specific, written prior permission.
* i-cubed limited makes no representations about the suitability
* of this software for any purpose.
*
* Derived from c/src/lib/libcpu/hppa1_1/timer/timer.c:
*
* COPYRIGHT (c) 1989-1999.
* On-Line Applications Research Corporation (OAR).
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.OARcorp.com/rtems/license.html.
*
* $Id$
*/
#include <rtems.h>
#include <mpc821.h>
static volatile rtems_unsigned32 Timer_starting;
static rtems_boolean Timer_driver_Find_average_overhead;
/*
* This is so small that this code will be reproduced where needed.
*/
static inline rtems_unsigned32 get_itimer(void)
{
rtems_unsigned32 ret;
asm volatile ("mftb %0" : "=r" ((ret))); /* TBLO */
return ret;
}
void Timer_initialize(void)
{
/* set interrupt level and enable timebase. This should never */
/* generate an interrupt however. */
m821.tbscr |= M821_TBSCR_TBIRQ(4) | M821_TBSCR_TBE;
Timer_starting = get_itimer();
}
int Read_timer(void)
{
rtems_unsigned32 clicks;
rtems_unsigned32 total;
clicks = get_itimer();
total = clicks - Timer_starting;
if ( Timer_driver_Find_average_overhead == 1 )
return total; /* in XXX microsecond units */
else {
if ( total < rtems_cpu_configuration_get_timer_least_valid() ) {
return 0; /* below timer resolution */
}
return (total - rtems_cpu_configuration_get_timer_average_overhead());
}
}
rtems_status_code Empty_function(void)
{
return RTEMS_SUCCESSFUL;
}
void Set_find_average_overhead(rtems_boolean find_flag)
{
Timer_driver_Find_average_overhead = find_flag;
}
c/src/lib/libcpu/powerpc/mpc821/vectors/.cvsignore
-2
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@@ -1,2 +0,0 @@
Makefile
Makefile.in
c/src/lib/libcpu/powerpc/mpc821/vectors/Makefile.am
-32
View File
@@ -1,32 +0,0 @@
##
## $Id$
##
AUTOMAKE_OPTIONS = foreign 1.4
VPATH = @srcdir@:@srcdir@/../../ppc403/vectors
## FIXME
PGM = ${ARCH}/vectors.rel
## Assembly sources
S_FILES = vectors.S align_h.S
vectors_rel_OBJECTS = $(S_FILES:%.S=${ARCH}/%.o)
include $(RTEMS_ROOT)/make/custom/@RTEMS_BSP@.cfg
include $(top_srcdir)/../../../../../automake/lib.am
#
# (OPTIONAL) Add local stuff here using +=
#
$(PGM): $(vectors_rel_OBJECTS)
$(make-rel)
all-local: ${ARCH} $(PGM)
EXTRA_DIST = vectors.S README
include $(top_srcdir)/../../../../../automake/local.am
c/src/lib/libcpu/powerpc/mpc821/vectors/README
-20
View File
@@ -1,20 +0,0 @@
#
# $Id$
#
The location of the vectors file object is critical.
From the comments at the head of vectors.s:
The issue with this file is getting it loaded at the right place.
The first vector MUST be at address 0x????0100.
How this is achieved is dependant on the tool chain.
...
The variable 'PPC_VECTOR_FILE_BASE' must be defined to be the
offset from 0x????0000 to the first location in the file. This
will be either 0x0000 or 0xfff0.
The eth_comm BSP defines PPC_VECTOR_FILE_BASE to be 0x00000000
c/src/lib/libcpu/powerpc/mpc821/vectors/vectors.S
-952
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File diff suppressed because it is too large Load Diff
c/src/lib/libcpu/powerpc/mpc860/.cvsignore
-2
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@@ -1,2 +0,0 @@
Makefile
Makefile.in
c/src/lib/libcpu/powerpc/mpc860/Makefile.am
-10
View File
@@ -1,10 +0,0 @@
##
## $Id$
##
AUTOMAKE_OPTIONS = foreign 1.4
SUBDIRS = include console-generic clock timer vectors
include $(top_srcdir)/../../../../../automake/subdirs.am
include $(top_srcdir)/../../../../../automake/local.am
c/src/lib/libcpu/powerpc/mpc860/README
-19
View File
@@ -1,19 +0,0 @@
#
# $Id$
#
Various non BSP dependant support routines.
clock - Uses the MPC860 PITPIT (Programmable interval timer) to
generate RTEMS clock ticks.
console_generic - Uses the MPC860 SCCs and SMCs to to serial I/O
include - console.h: function declarations for console related functions
timer - Uses the MPC860 timebase register for timing
tests. It only uses the lower 32 bits
vectors - MPC860 specific vector entry points.
Includes CPU dependant, application independant
handlers: alignment.
c/src/lib/libcpu/powerpc/mpc860/clock/.cvsignore
-2
View File
@@ -1,2 +0,0 @@
Makefile
Makefile.in
c/src/lib/libcpu/powerpc/mpc860/clock/Makefile.am
-29
View File
@@ -1,29 +0,0 @@
##
## $Id$
##
AUTOMAKE_OPTIONS = foreign 1.4
PGM = $(ARCH)/clock.rel
C_FILES = clock.c
clock_rel_OBJECTS = $(C_FILES:%.c=$(ARCH)/%.o)
include $(RTEMS_ROOT)/make/custom/@RTEMS_BSP@.cfg
include $(top_srcdir)/../../../../../automake/lib.am
#
# (OPTIONAL) Add local stuff here using +=
#
$(PGM): $(clock_rel_OBJECTS)
$(make-rel)
all-local: $(ARCH) $(clock_rel_OBJECTS) $(PGM)
.PRECIOUS: $(PGM)
EXTRA_DIST = clock.c
include $(top_srcdir)/../../../../../automake/local.am
c/src/lib/libcpu/powerpc/mpc860/clock/clock.c
-179
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@@ -1,179 +0,0 @@
/* clock.c
*
* This routine initializes the PIT on the MPC860.
* The tick frequency is specified by the bsp.
*
* Author: Jay Monkman (jmonkman@frasca.com)
* Copyright (C) 1998 by Frasca International, Inc.
*
* Derived from c/src/lib/libcpu/ppc/ppc403/clock/clock.c:
*
* Author: Andrew Bray <andy@i-cubed.co.uk>
*
* COPYRIGHT (c) 1995 by i-cubed ltd.
*
* To anyone who acknowledges that this file is provided "AS IS"
* without any express or implied warranty:
* permission to use, copy, modify, and distribute this file
* for any purpose is hereby granted without fee, provided that
* the above copyright notice and this notice appears in all
* copies, and that the name of i-cubed limited not be used in
* advertising or publicity pertaining to distribution of the
* software without specific, written prior permission.
* i-cubed limited makes no representations about the suitability
* of this software for any purpose.
*
* Derived from c/src/lib/libcpu/hppa1_1/clock/clock.c:
*
* COPYRIGHT (c) 1989-1999.
* On-Line Applications Research Corporation (OAR).
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.OARcorp.com/rtems/license.html.
*
* $Id$
*/
#include <rtems.h>
#include <clockdrv.h>
#include <rtems/libio.h>
#include <stdlib.h> /* for atexit() */
#include <mpc860.h>
volatile rtems_unsigned32 Clock_driver_ticks;
extern volatile m860_t m860;
void Clock_exit( void );
/*
* These are set by clock driver during its init
*/
rtems_device_major_number rtems_clock_major = ~0;
rtems_device_minor_number rtems_clock_minor;
/*
* ISR Handler
*/
rtems_isr Clock_isr(rtems_vector_number vector)
{
m860.piscr |= M860_PISCR_PS;
Clock_driver_ticks++;
rtems_clock_tick();
}
void Install_clock(rtems_isr_entry clock_isr)
{
rtems_isr_entry previous_isr;
rtems_unsigned32 pit_value;
Clock_driver_ticks = 0;
pit_value = rtems_configuration_get_microseconds_per_tick() /
rtems_cpu_configuration_get_clicks_per_usec();
if (pit_value == 0) {
pit_value = 0xffff;
} else {
pit_value--;
}
if (pit_value > 0xffff) { /* pit is only 16 bits long */
rtems_fatal_error_occurred(-1);
}
/*
* initialize the interval here
* First tick is set to right amount of time in the future
* Future ticks will be incremented over last value set
* in order to provide consistent clicks in the face of
* interrupt overhead
*/
rtems_interrupt_catch(clock_isr, PPC_IRQ_LVL0, &previous_isr);
m860.sccr &= ~(1<<24);
m860.pitc = pit_value;
/* set PIT irq level, enable PIT, PIT interrupts */
/* and clear int. status */
m860.piscr = M860_PISCR_PIRQ(0) |
M860_PISCR_PTE | M860_PISCR_PS | M860_PISCR_PIE;
m860.simask |= M860_SIMASK_LVM0;
atexit(Clock_exit);
}
void
ReInstall_clock(rtems_isr_entry new_clock_isr)
{
rtems_isr_entry previous_isr;
rtems_unsigned32 isrlevel = 0;
rtems_interrupt_disable(isrlevel);
rtems_interrupt_catch(new_clock_isr, PPC_IRQ_LVL0, &previous_isr);
rtems_interrupt_enable(isrlevel);
}
/*
* Called via atexit()
* Remove the clock interrupt handler by setting handler to NULL
*/
void
Clock_exit(void)
{
/* disable PIT and PIT interrupts */
m860.piscr &= ~(M860_PISCR_PTE | M860_PISCR_PIE);
(void) set_vector(0, PPC_IRQ_LVL0, 1);
}
rtems_device_driver Clock_initialize(
rtems_device_major_number major,
rtems_device_minor_number minor,
void *pargp
)
{
Install_clock( Clock_isr );
/*
* make major/minor avail to others such as shared memory driver
*/
rtems_clock_major = major;
rtems_clock_minor = minor;
return RTEMS_SUCCESSFUL;
}
rtems_device_driver Clock_control(
rtems_device_major_number major,
rtems_device_minor_number minor,
void *pargp
)
{
rtems_libio_ioctl_args_t *args = pargp;
if (args == 0)
goto done;
/*
* This is hokey, but until we get a defined interface
* to do this, it will just be this simple...
*/
if (args->command == rtems_build_name('I', 'S', 'R', ' ')) {
Clock_isr(PPC_IRQ_LVL0);
}
else if (args->command == rtems_build_name('N', 'E', 'W', ' ')) {
ReInstall_clock(args->buffer);
}
done:
return RTEMS_SUCCESSFUL;
}
c/src/lib/libcpu/powerpc/mpc860/console-generic/.cvsignore
-2
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@@ -1,2 +0,0 @@
Makefile
Makefile.in
c/src/lib/libcpu/powerpc/mpc860/console-generic/Makefile.am
-29
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@@ -1,29 +0,0 @@
##
## $Id$
##
AUTOMAKE_OPTIONS = foreign 1.4
PGM = $(ARCH)/console-generic.rel
C_FILES = console-generic.c
console_generic_rel_OBJECTS = $(C_FILES:%.c=$(ARCH)/%.o)
include $(RTEMS_ROOT)/make/custom/@RTEMS_BSP@.cfg
include $(top_srcdir)/../../../../../automake/lib.am
#
# (OPTIONAL) Add local stuff here using +=
#
$(PGM): $(console_generic_rel_OBJECTS)
$(make-rel)
all-local: $(ARCH) $(console_generic_rel_OBJECTS) $(PGM)
.PRECIOUS: $(PGM)
EXTRA_DIST = console-generic.c
include $(top_srcdir)/../../../../../automake/local.am
c/src/lib/libcpu/powerpc/mpc860/console-generic/console-generic.c
-929
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File diff suppressed because it is too large Load Diff
c/src/lib/libcpu/powerpc/mpc860/include/.cvsignore
-2
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@@ -1,2 +0,0 @@
Makefile
Makefile.in
c/src/lib/libcpu/powerpc/mpc860/include/Makefile.am
-27
View File
@@ -1,27 +0,0 @@
##
## $Id$
##
AUTOMAKE_OPTIONS = foreign 1.4
H_FILES = mpc860.h
MPC860_H_FILES = console.h
noinst_HEADERS = $(H_FILES) $(MPC860_H_FILES)
PREINSTALL_FILES += $(PROJECT_INCLUDE)/mpc860 \
$(H_FILES:%.h=$(PROJECT_INCLUDE)/%.h) \
$(MPC860_H_FILES:%.h=$(PROJECT_INCLUDE)/mpc860/%.h)
$(PROJECT_INCLUDE)/mpc860:
$(mkinstalldirs) $@
$(PROJECT_INCLUDE)/%.h: %.h
$(INSTALL_DATA) $< $@
$(PROJECT_INCLUDE)/mpc860/%.h: %.h
$(INSTALL_DATA) $< $@
all-local: $(PREINSTALL_FILES)
include $(top_srcdir)/../../../../../automake/local.am
c/src/lib/libcpu/powerpc/mpc860/include/console.h
-48
View File
@@ -1,48 +0,0 @@
/*
* $Id$
*/
#ifndef _M860_CONSOLE_H_
#define _M860_CONSOLE_H_
#include <rtems/libio.h>
int m860_smc_set_attributes(int, const struct termios*);
int m860_scc_set_attributes(int, const struct termios*);
void m860_scc_initialize(int);
void m860_smc_initialize(int);
int m860_char_poll_read(int);
int m860_char_poll_write(int, const char*, int);
rtems_isr m860_scc1_console_interrupt_handler(rtems_vector_number);
rtems_isr m860_scc2_console_interrupt_handler(rtems_vector_number);
rtems_isr m860_scc3_console_interrupt_handler(rtems_vector_number);
rtems_isr m860_scc4_console_interrupt_handler(rtems_vector_number);
rtems_isr m860_smc1_console_interrupt_handler(rtems_vector_number);
rtems_isr m860_smc2_console_interrupt_handler(rtems_vector_number);
int m860_buf_poll_read(int, char**);
int m860_buf_poll_write(int, char*, int);
void m860_console_initialize(void);
rtems_device_driver m860_console_read(rtems_device_major_number,
rtems_device_minor_number,
void*);
rtems_device_driver m860_console_write(rtems_device_major_number,
rtems_device_minor_number,
void*);
typedef struct Buf_t_ {
struct Buf_t_ *next;
volatile char *buf;
volatile int len;
int pos;
} Buf_t;
#define SMC1_MINOR 0
#define SMC2_MINOR 1
#define SCC1_MINOR 2
#define SCC2_MINOR 3
#define SCC3_MINOR 4
#define SCC4_MINOR 5
#endif
c/src/lib/libcpu/powerpc/mpc860/include/mpc860.h
-1300
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File diff suppressed because it is too large Load Diff
c/src/lib/libcpu/powerpc/mpc860/timer/.cvsignore
-2
View File
@@ -1,2 +0,0 @@
Makefile
Makefile.in
c/src/lib/libcpu/powerpc/mpc860/timer/Makefile.am
-29
View File
@@ -1,29 +0,0 @@
##
## $Id$
##
AUTOMAKE_OPTIONS = foreign 1.4
PGM = $(ARCH)/timer.rel
C_FILES = timer.c
timer_rel_OBJECTS = $(C_FILES:%.c=$(ARCH)/%.o)
include $(RTEMS_ROOT)/make/custom/@RTEMS_BSP@.cfg
include $(top_srcdir)/../../../../../automake/lib.am
#
# (OPTIONAL) Add local stuff here using +=
#
$(PGM): $(timer_rel_OBJECTS)
$(make-rel)
all-local: $(ARCH) $(timer_rel_OBJECTS) $(PGM)
.PRECIOUS: $(PGM)
EXTRA_DIST = timer.c
include $(top_srcdir)/../../../../../automake/local.am
c/src/lib/libcpu/powerpc/mpc860/timer/timer.c
-100
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@@ -1,100 +0,0 @@
/* timer.c
*
* This file manages the interval timer on the PowerPC MPC860.
* NOTE: This is not the PIT, but rather the RTEMS interval
* timer
* We shall use the bottom 32 bits of the timebase register,
*
* The following was in the 403 version of this file. I don't
* know what it means. JTM 5/19/98
* NOTE: It is important that the timer start/stop overhead be
* determined when porting or modifying this code.
*
* Author: Jay Monkman (jmonkman@frasca.com)
* Copywright (C) 1998 by Frasca International, Inc.
*
* Derived from c/src/lib/libcpu/ppc/ppc403/timer/timer.c:
*
* Author: Andrew Bray <andy@i-cubed.co.uk>
*
* COPYRIGHT (c) 1995 by i-cubed ltd.
*
* To anyone who acknowledges that this file is provided "AS IS"
* without any express or implied warranty:
* permission to use, copy, modify, and distribute this file
* for any purpose is hereby granted without fee, provided that
* the above copyright notice and this notice appears in all
* copies, and that the name of i-cubed limited not be used in
* advertising or publicity pertaining to distribution of the
* software without specific, written prior permission.
* i-cubed limited makes no representations about the suitability
* of this software for any purpose.
*
* Derived from c/src/lib/libcpu/hppa1_1/timer/timer.c:
*
* COPYRIGHT (c) 1989-1999.
* On-Line Applications Research Corporation (OAR).
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.OARcorp.com/rtems/license.html.
*
* $Id$
*/
#include <rtems.h>
#include <mpc860.h>
static volatile rtems_unsigned32 Timer_starting;
static rtems_boolean Timer_driver_Find_average_overhead;
/*
* This is so small that this code will be reproduced where needed.
*/
static inline rtems_unsigned32 get_itimer(void)
{
rtems_unsigned32 ret;
asm volatile ("mftb %0" : "=r" ((ret))); /* TBLO */
return ret;
}
void Timer_initialize(void)
{
/* set interrupt level and enable timebase. This should never */
/* generate an interrupt however. */
m860.tbscr |= M860_TBSCR_TBIRQ(4) | M860_TBSCR_TBE;
Timer_starting = get_itimer();
}
int Read_timer(void)
{
rtems_unsigned32 clicks;
rtems_unsigned32 total;
clicks = get_itimer();
total = clicks - Timer_starting;
if ( Timer_driver_Find_average_overhead == 1 )
return total; /* in XXX microsecond units */
else {
if ( total < rtems_cpu_configuration_get_timer_least_valid() ) {
return 0; /* below timer resolution */
}
return (total - rtems_cpu_configuration_get_timer_average_overhead());
}
}
rtems_status_code Empty_function(void)
{
return RTEMS_SUCCESSFUL;
}
void Set_find_average_overhead(rtems_boolean find_flag)
{
Timer_driver_Find_average_overhead = find_flag;
}
c/src/lib/libcpu/powerpc/mpc860/vectors/.cvsignore
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Makefile
Makefile.in
c/src/lib/libcpu/powerpc/mpc860/vectors/Makefile.am
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##
## $Id$
##
AUTOMAKE_OPTIONS = foreign 1.4
VPATH = @srcdir@:@srcdir@/../../ppc403/vectors
## FIXME
PGM = ${ARCH}/vectors.rel
## Assembly sources
S_FILES = vectors.S align_h.S
vectors_rel_OBJECTS = $(S_FILES:%.S=${ARCH}/%.o)
include $(RTEMS_ROOT)/make/custom/@RTEMS_BSP@.cfg
include $(top_srcdir)/../../../../../automake/lib.am
#
# (OPTIONAL) Add local stuff here using +=
#
$(PGM): $(vectors_rel_OBJECTS)
$(make-rel)
all-local: ${ARCH} $(PGM)
EXTRA_DIST = vectors.S README
include $(top_srcdir)/../../../../../automake/local.am
c/src/lib/libcpu/powerpc/mpc860/vectors/README
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#
# $Id$
#
The location of the vectors file object is critical.
From the comments at the head of vectors.s:
The issue with this file is getting it loaded at the right place.
The first vector MUST be at address 0x????0100.
How this is achieved is dependant on the tool chain.
...
The variable 'PPC_VECTOR_FILE_BASE' must be defined to be the
offset from 0x????0000 to the first location in the file. This
will be either 0x0000 or 0xfff0.
The eth_comm BSP defines PPC_VECTOR_FILE_BASE to be 0x00000000
c/src/lib/libcpu/powerpc/mpc860/vectors/vectors.S
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