bsp/pc386: Move libcpu content to bsps

This patch is a part of the BSP source reorganization.

Update #3285.

1 files changed, 0 insertions, 519 deletions

diff --git a/c/src/lib/libcpu/i386/page.c b/c/src/lib/libcpu/i386/page.c
deleted file mode 100644
index f05e145f51..0000000000
--- a/c/src/lib/libcpu/i386/page.c
+++ /dev/null
@@ -1,519 +0,0 @@
-/*
- * page.c :- This file contains implementation of C function to
- *           Instanciate paging. More detailled information
- *	     can be found on Intel site and more precisely in
- *           the following book :
- *
- *		Pentium Processor familly
- *		Developper's Manual
- *
- *		Volume 3 : Architecture and Programming Manual
- *
- * Copyright (C) 1999  Emmanuel Raguet (raguet@crf.canon.fr)
- *                     Canon Centre Recherche France.
- *
- *  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 <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <rtems.h>
-#include <rtems/score/cpu.h>
-#include <libcpu/page.h>
-
-#define MEMORY_SIZE 0x4000000 		/* 64Mo */
-
-static int directoryEntry=0;
-static int tableEntry=0;
-static page_directory *pageDirectory;
-
-extern uint32_t   bsp_mem_size;
-
-/*************************************************************************/
-/************** IT IS A ONE-TO-ONE TRANSLATION ***************************/
-/*************************************************************************/
-
-
-/*
- * Disable the paging
- */
-void _CPU_disable_paging(void)
-{
-  unsigned int regCr0;
-
-  rtems_cache_flush_entire_data();
-  regCr0 = i386_get_cr0();
-  regCr0 &= ~(CR0_PAGING);
-  i386_set_cr0( regCr0 );
-}
-
-/*
- * Enable the paging
- */
-void _CPU_enable_paging(void)
-{
-  unsigned int regCr0;
-
-  regCr0 = i386_get_cr0();
-  regCr0 |= CR0_PAGING;
-  i386_set_cr0( regCr0 );
-  rtems_cache_flush_entire_data();
-}
-
-
-/*
- * Initialize the paging with 1-to-1 mapping
- */
-
-int init_paging(void)
-{
-  int nbPages;
-  int nbInitPages;
-  char *Tables;
-  unsigned int regCr3;
-  page_table *pageTable;
-  unsigned int physPage;
-  int nbTables=0;
-
-  nbPages = ( (bsp_mem_size - 1) / PG_SIZE ) + 1;
-  nbTables = ( (bsp_mem_size - 1) / FOUR_MB ) + 2;
-
-  /* allocate 1 page more to page alignement */
-  Tables = (char *)malloc( (nbTables + 1)*sizeof(page_table) );
-  if ( Tables == NULL ){
-    return -1; /*unable to allocate memory */
-  }
-
-  /* 4K-page alignement */
-  Tables += (PG_SIZE - (int)Tables) & 0xFFF;
-
-  /* Reset Tables */
-  memset( Tables, 0, nbTables*sizeof(page_table) );
-  pageDirectory = (page_directory *) Tables;
-  pageTable     = (page_table *)((int)Tables + PG_SIZE);
-
-  nbInitPages = 0;
-  directoryEntry = 0;
-  tableEntry = 0;
-  physPage = 0;
-
-  while ( nbInitPages != nbPages ){
-    if ( tableEntry == 0 ){
-      pageDirectory->pageDirEntry[directoryEntry].bits.page_frame_address = (unsigned int)pageTable >> 12;
-      pageDirectory->pageDirEntry[directoryEntry].bits.available      = 0;
-      pageDirectory->pageDirEntry[directoryEntry].bits.page_size      = 0;
-      pageDirectory->pageDirEntry[directoryEntry].bits.accessed       = 0;
-      pageDirectory->pageDirEntry[directoryEntry].bits.cache_disable  = 0;
-      pageDirectory->pageDirEntry[directoryEntry].bits.write_through  = 0;
-      pageDirectory->pageDirEntry[directoryEntry].bits.user           = 1;
-      pageDirectory->pageDirEntry[directoryEntry].bits.writable       = 1;
-      pageDirectory->pageDirEntry[directoryEntry].bits.present        = 1;
-    }
-    pageTable->pageTableEntry[tableEntry].bits.page_frame_address = physPage;
-    pageTable->pageTableEntry[tableEntry].bits.available      = 0;
-    pageTable->pageTableEntry[tableEntry].bits.dirty          = 0;
-    pageTable->pageTableEntry[tableEntry].bits.accessed       = 0;
-    pageTable->pageTableEntry[tableEntry].bits.cache_disable  = 0;
-    pageTable->pageTableEntry[tableEntry].bits.write_through  = 0;
-    pageTable->pageTableEntry[tableEntry].bits.user           = 1;
-    pageTable->pageTableEntry[tableEntry].bits.writable       = 1;
-    pageTable->pageTableEntry[tableEntry].bits.present        = 1;
-
-    physPage ++;
-    tableEntry ++;
-
-    if (tableEntry >= MAX_ENTRY){
-      tableEntry = 0;
-      directoryEntry ++;
-      pageTable ++;
-    }
-
-    nbInitPages++;
-  }
-
-  regCr3 &= ~(CR3_PAGE_WRITE_THROUGH);
-  regCr3 &= ~(CR3_PAGE_CACHE_DISABLE);
-  /*regCr3.cr3.page_directory_base    = (unsigned int)pageDirectory >> 12;*/
-  regCr3 = (unsigned int)pageDirectory & CR3_PAGE_DIRECTORY_MASK;
-
-  i386_set_cr3( regCr3 );
-
-  _CPU_enable_cache();
-  _CPU_enable_paging();
-
-  return 0;
-}
-
-/*
- * Is cache enable
- */
-int  _CPU_is_cache_enabled(void)
-{
-  unsigned int regCr0;
-
-  regCr0 = i386_get_cr0();
-  return( ~(regCr0 & CR0_PAGE_LEVEL_CACHE_DISABLE) );
-}
-
-/*
- * Is paging enable
- */
-int  _CPU_is_paging_enabled(void)
-{
-  unsigned int regCr0;
-
-  regCr0 = i386_get_cr0();
-  return(regCr0 & CR0_PAGING);
-}
-
-
-/*
- * Translate the physical address in the virtual space and return
- * the translated address in mappedAddress
- */
-
-int _CPU_map_phys_address(
-  void **mappedAddress,
-  void  *physAddress,
-  int    size,
-  int    flag
-)
-{
-  page_table *localPageTable;
-  unsigned int lastAddress, countAddress;
-  char *Tables;
-  linear_address virtualAddress;
-  unsigned char pagingWasEnabled;
-
-  pagingWasEnabled = 0;
-
-  if (_CPU_is_paging_enabled()){
-    pagingWasEnabled = 1;
-    _CPU_disable_paging();
-  }
-
-  countAddress = (unsigned int)physAddress;
-  lastAddress = (unsigned int)physAddress + (size - 1);
-  virtualAddress.address = 0;
-
-  while (1) {
-
-    if ((countAddress & ~MASK_OFFSET) > (lastAddress & ~MASK_OFFSET))
-      break;
-
-    /* Need to allocate a new page table */
-    if (pageDirectory->pageDirEntry[directoryEntry].bits.page_frame_address == 0){
-      /* We allocate 2 pages to perform 4k-page alignement */
-      Tables = (char *)malloc(2*sizeof(page_table));
-      if ( Tables == NULL ){
-	if (pagingWasEnabled)
-	  _CPU_enable_paging();
-	return -1; /* unable to allocate memory */
-      }
-      /* 4K-page alignement */
-      Tables += (PG_SIZE - (int)Tables) & 0xFFF;
-
-      /* Reset Table */
-      memset( Tables, 0, sizeof(page_table) );
-      pageDirectory->pageDirEntry[directoryEntry].bits.page_frame_address =
-	(unsigned int)Tables >> 12;
-      pageDirectory->pageDirEntry[directoryEntry].bits.available      = 0;
-      pageDirectory->pageDirEntry[directoryEntry].bits.page_size      = 0;
-      pageDirectory->pageDirEntry[directoryEntry].bits.accessed       = 0;
-      pageDirectory->pageDirEntry[directoryEntry].bits.cache_disable  = 0;
-      pageDirectory->pageDirEntry[directoryEntry].bits.write_through  = 0;
-      pageDirectory->pageDirEntry[directoryEntry].bits.user           = 1;
-      pageDirectory->pageDirEntry[directoryEntry].bits.writable       = 1;
-      pageDirectory->pageDirEntry[directoryEntry].bits.present        = 1;
-    }
-
-
-    localPageTable = (page_table *)(pageDirectory->
-				    pageDirEntry[directoryEntry].bits.
-				    page_frame_address << 12);
-
-    if (virtualAddress.address == 0){
-      virtualAddress.bits.directory = directoryEntry;
-      virtualAddress.bits.page      = tableEntry;
-      virtualAddress.bits.offset    = (unsigned int)physAddress & MASK_OFFSET;
-    }
-
-    localPageTable->pageTableEntry[tableEntry].bits.page_frame_address =
-      ((unsigned int)countAddress & ~MASK_OFFSET) >> 12;
-    localPageTable->pageTableEntry[tableEntry].bits.available      = 0;
-    localPageTable->pageTableEntry[tableEntry].bits.dirty          = 0;
-    localPageTable->pageTableEntry[tableEntry].bits.accessed       = 0;
-    localPageTable->pageTableEntry[tableEntry].bits.cache_disable  = 0;
-    localPageTable->pageTableEntry[tableEntry].bits.write_through  = 0;
-    localPageTable->pageTableEntry[tableEntry].bits.user           = 1;
-    localPageTable->pageTableEntry[tableEntry].bits.writable       = 0;
-    localPageTable->pageTableEntry[tableEntry].bits.present        = 1;
-
-    localPageTable->pageTableEntry[tableEntry].table_entry |= flag ;
-
-    countAddress += PG_SIZE;
-    tableEntry++;
-    if (tableEntry >= MAX_ENTRY){
-      tableEntry = 0;
-      directoryEntry++;
-    }
-  }
-
-  if (mappedAddress != 0)
-    *mappedAddress = (void *)(virtualAddress.address);
-  if (pagingWasEnabled)
-    _CPU_enable_paging();
-  return 0;
-}
-
-/*
- * "Compress" the Directory and Page tables to avoid
- * important loss of address range
- */
-static void Paging_Table_Compress(void)
-{
-  unsigned int dirCount, pageCount;
-  page_table *localPageTable;
-
-  if (tableEntry == 0){
-    dirCount  = directoryEntry - 1;
-    pageCount = MAX_ENTRY - 1;
-  }
-  else {
-    dirCount  = directoryEntry;
-    pageCount = tableEntry - 1;
-  }
-
-  while (1){
-
-    localPageTable = (page_table *)(pageDirectory->
-				    pageDirEntry[dirCount].bits.
-				    page_frame_address << 12);
-
-    if (localPageTable->pageTableEntry[pageCount].bits.present == 1){
-      pageCount++;
-      if (pageCount >= MAX_ENTRY){
-	pageCount = 0;
-	dirCount++;
-      }
-      break;
-    }
-
-
-    if (pageCount == 0) {
-      if (dirCount == 0){
-	break;
-      }
-      else {
-	pageCount = MAX_ENTRY - 1;
-	dirCount-- ;
-      }
-    }
-    else
-      pageCount-- ;
-  }
-
-  directoryEntry = dirCount;
-  tableEntry = pageCount;
-}
-
-
-/*
- * Unmap the virtual address from the tables
- * (we do not deallocate the table already allocated)
- */
-
-int _CPU_unmap_virt_address(
-  void *mappedAddress,
-  int   size
-)
-{
-
-  linear_address linearAddr;
-  page_table *localPageTable;
-  unsigned int lastAddr ;
-  unsigned char pagingWasEnabled;
-
-  pagingWasEnabled = 0;
-
-  if (_CPU_is_paging_enabled()){
-    pagingWasEnabled = 1;
-    _CPU_disable_paging();
-  }
-
-  linearAddr.address = (unsigned int)mappedAddress;
-  lastAddr = (unsigned int)mappedAddress + (size - 1);
-
-  while (1){
-
-    if ((linearAddr.address & ~MASK_OFFSET) > (lastAddr & ~MASK_OFFSET))
-      break;
-
-    if (pageDirectory->pageDirEntry[linearAddr.bits.directory].bits.present == 0){
-      if (pagingWasEnabled)
-	_CPU_enable_paging();
-      return -1;
-    }
-
-    localPageTable = (page_table *)(pageDirectory->
-				    pageDirEntry[linearAddr.bits.directory].bits.
-				    page_frame_address << 12);
-
-    if (localPageTable->pageTableEntry[linearAddr.bits.page].bits.present == 0){
-      if (pagingWasEnabled)
-	_CPU_enable_paging();
-      return -1;
-    }
-
-    localPageTable->pageTableEntry[linearAddr.bits.page].bits.present = 0;
-
-    linearAddr.address += PG_SIZE ;
-  }
-  Paging_Table_Compress();
-  if (pagingWasEnabled)
-    _CPU_enable_paging();
-
-  return 0;
-}
-
-/*
- * Modify the flags PRESENT, WRITABLE, USER, WRITE_TROUGH, CACHE_DISABLE
- * of the page's descriptor.
- */
-
-int _CPU_change_memory_mapping_attribute(
-  void         **newAddress,
-  void          *mappedAddress,
-  unsigned int   size,
-  unsigned int   flag
-)
-{
-
-  linear_address linearAddr;
-  page_table *localPageTable;
-  unsigned int lastAddr ;
-  unsigned char pagingWasEnabled;
-
-  pagingWasEnabled = 0;
-
-  if (_CPU_is_paging_enabled()){
-    pagingWasEnabled = 1;
-    _CPU_disable_paging();
-  }
-
-  linearAddr.address  = (unsigned int)mappedAddress;
-  lastAddr = (unsigned int)mappedAddress + (size - 1);
-
-  while (1){
-
-    if ((linearAddr.address & ~MASK_OFFSET) > (lastAddr & ~MASK_OFFSET))
-      break;
-
-    if (pageDirectory->pageDirEntry[linearAddr.bits.directory].bits.present == 0){
-      if (pagingWasEnabled)
-	_CPU_enable_paging();
-      return -1;
-    }
-    localPageTable = (page_table *)(pageDirectory->
-				    pageDirEntry[linearAddr.bits.directory].bits.
-				    page_frame_address << 12);
-
-    if (localPageTable->pageTableEntry[linearAddr.bits.page].bits.present == 0){
-      if (pagingWasEnabled)
-	_CPU_enable_paging();
-      return -1;
-    }
-
-    localPageTable->pageTableEntry[linearAddr.bits.page].table_entry &= ~MASK_FLAGS ;
-    localPageTable->pageTableEntry[linearAddr.bits.page].table_entry |= flag ;
-
-    linearAddr.address += PG_SIZE ;
-  }
-
-  if (newAddress != NULL)
-    *newAddress = mappedAddress ;
-
-  if (pagingWasEnabled)
-    _CPU_enable_paging();
-
-  return 0;
-}
-
-/*
- * Display the page descriptor flags
- * CACHE_DISABLE of the whole memory
- */
-
-#include <rtems/bspIo.h>
-
-int  _CPU_display_memory_attribute(void)
-{
-  unsigned int dirCount, pageCount;
-  unsigned int regCr0;
-  page_table *localPageTable;
-  unsigned int prevCache;
-  unsigned int prevPresent;
-  unsigned int maxPage;
-  unsigned char pagingWasEnabled;
-
-  regCr0 = i386_get_cr0();
-
-  printk("\n\n********* MEMORY CACHE CONFIGURATION *****\n");
-
-  printk("CR0 -> paging           : %s\n",((regCr0 & CR0_PAGING) ? "ENABLE ":"DISABLE"));
-  printk("       page-level cache : %s\n\n",((regCr0 & CR0_PAGE_LEVEL_CACHE_DISABLE) ? "DISABLE":"ENABLE"));
-
-  if ((regCr0 & CR0_PAGING) == 0)
-    return 0;
-
-  prevPresent = 0;
-  prevCache   = 1;
-
-  pagingWasEnabled = 0;
-
-  if (_CPU_is_paging_enabled()){
-    pagingWasEnabled = 1;
-    _CPU_disable_paging();
-  }
-
-  for (dirCount = 0; dirCount < directoryEntry+1; dirCount++) {
-
-    localPageTable = (page_table *)(pageDirectory->
-				    pageDirEntry[dirCount].bits.
-				    page_frame_address << 12);
-
-    maxPage = MAX_ENTRY;
-    /*if ( dirCount == (directoryEntry-1))
-      maxPage = tableEntry;*/
-    for (pageCount = 0; pageCount < maxPage; pageCount++) {
-
-      if (localPageTable->pageTableEntry[pageCount].bits.present != 0){
-	if (prevPresent == 0){
-	  prevPresent = 1;
-	  printk ("present page from address %x \n", ((dirCount << 22)|(pageCount << 12)));
-	}
-	if (prevCache != localPageTable->pageTableEntry[pageCount].bits.cache_disable ) {
-	  prevCache = localPageTable->pageTableEntry[pageCount].
-	    bits.cache_disable;
-	  printk ("    cache %s from %x <phy %x>\n",
-		  (prevCache ? "DISABLE" : "ENABLE "),
-		  ((dirCount << 22)|(pageCount << 12)),
-		  localPageTable->pageTableEntry[pageCount].bits.page_frame_address << 12);
-	}
-      }
-      else {
-	if (prevPresent == 1){
-	  prevPresent = 0;
-	  printk ("Absent from %x \n", ((dirCount << 22)|(pageCount << 12)));
-	}
-      }
-    }
-  }
-  if (pagingWasEnabled)
-    _CPU_enable_paging();
-
-  return 0;
-}