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* Adjust code to use the new page directory/table helper macros.

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* Some more code cleanup.



git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@39138 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Ithamar R. Adema 2010-10-25 11:19:17 +00:00
parent d38153721e
commit ac4c302248
1 changed files with 31 additions and 50 deletions
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81
src/system/boot/platform/u-boot/mmu.cpp
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@ -151,11 +151,7 @@ get_next_virtual_address(size_t size)
static addr_t
get_next_virtual_address_alligned (size_t size, uint32 mask)
{
TRACE(("\n NEXT VIRRUADRSSS: %lx\n", sNextVirtualAddress));
addr_t address = (sNextVirtualAddress) & mask ;
TRACE(("ADDR: %lx\n", address));
addr_t address = (sNextVirtualAddress) & mask;
sNextVirtualAddress = address + size;
return address;
@ -248,11 +244,13 @@ get_next_page_table(uint32 type)
size = 4096;
break;
}
addr_t address = sNextPageTableAddress;
if (address >= kPageTableRegionEnd){
TRACE(("outside of pagetableregion!"));
return (uint32 *)get_next_physical_address_alligned(size,0xffffffc0);
if (address >= kPageTableRegionEnd) {
TRACE(("outside of pagetableregion!\n"));
return (uint32 *)get_next_physical_address_alligned(size, 0xffffffc0);
}
sNextPageTableAddress += size;
return (uint32 *)address;
}
@ -261,6 +259,7 @@ get_next_page_table(uint32 type)
void
init_page_directory()
{
TRACE(("init_page_directory\n"));
uint32 smalltype;
// see if subpages disabled
@ -269,10 +268,7 @@ init_page_directory()
else
smalltype = MMU_L2_TYPE_SMALLEXT;
TRACE(("init_page_directory\n"));
gKernelArgs.arch_args.phys_pgdir = (uint32)sPageDirectory;
TRACE(("init_page_directory2\n"));
// clear out the pgdir
for (uint32 i = 0; i < 4096; i++)
@ -284,35 +280,24 @@ init_page_directory()
pageTable = get_next_page_table(MMU_L1_TYPE_COARSEPAGETABLE);
TRACE(("BLOCK: %s START: %lx END %lx\n",LOADER_MEMORYMAP[i].name,LOADER_MEMORYMAP[i].start,LOADER_MEMORYMAP[i].end));
addr_t pos = LOADER_MEMORYMAP[i].start;
int c=0;
while(pos< LOADER_MEMORYMAP[i].end){
pageTable[c]=pos | LOADER_MEMORYMAP[i].flags | smalltype;
// TRACE(("PAGE TABLE: %lx = [%lx] \n",c, pageTable[c]));
int c = 0;
while(pos < LOADER_MEMORYMAP[i].end) {
pageTable[c] = pos | LOADER_MEMORYMAP[i].flags | smalltype;
c++;
if(c>255){ //we filled a pagetable => we need a new one
if (c > 255) { //we filled a pagetable => we need a new one
//there is 1MB per pagetable so:
sPageDirectory[ pos / (1024*1024) ]= (uint32)pageTable | MMU_L1_TYPE_COARSEPAGETABLE;
// TRACE(("DIRDIRDIRDIRDIRDIRDIRDIRDIRDIRDIRDIRDIRDIRDIRDIRDIRDIRDIRDIRDIRDIRDIRDIRDIRDIRDIRDIR\n"));
// for(uint32 j=0; j<256;j++){
// TRACE(("%lx ",pageTable[j]));
// }
// TRACE(("\nPAGEDIR: [%lx] = %lx \n",pos / (1024*1024), sPageDirectory[ pos / (1024*1024) ] ));
// TRACE(("DIRDIRDIRDIRDIRDIRDIRDIRDIRDIRDIRDIRDIRDIRDIRDIRDIRDIRDIRDIRDIRDIRDIRDIRDIRDIRDIRDIR\n"));
sPageDirectory[VADDR_TO_PDENT(pos)] = (uint32)pageTable | MMU_L1_TYPE_COARSEPAGETABLE;
pageTable = get_next_page_table(MMU_L1_TYPE_COARSEPAGETABLE);
c=0;
}
pos += B_PAGE_SIZE;
}
if(c>0){
sPageDirectory[ pos / (1024*1024) ]= (uint32)pageTable | MMU_L1_TYPE_COARSEPAGETABLE;
// TRACE(("DIRDIRDIRDIRDIRDIRDIRDIRDIRDIRDIRDIRDIRDIRDIRDIRDIRDIRDIRDIRDIRDIRDIRDIRDIRDIRDIRDIR\n"));
// for(uint32 j=0; j<256; j++){
// TRACE(("%lx ",pageTable[j]));
// }
// TRACE(("\nPAGEDIR: %lx = [%lx] \n",pos / (1024*1024), sPageDirectory[ pos / (1024*1024) ] ));
// TRACE(("DIRDIRDIRDIRDIRDIRDIRDIRDIRDIRDIRDIRDIRDIRDIRDIRDIRDIRDIRDIRDIRDIRDIRDIRDIRDIRDIRDIR\n"));
}
if (c > 0)
sPageDirectory[VADDR_TO_PDENT(pos)] = (uint32)pageTable | MMU_L1_TYPE_COARSEPAGETABLE;
}
mmu_flush_TLB();
@ -349,7 +334,7 @@ add_page_table(addr_t base)
pageTable[i] = 0;
// put the new page table into the page directory
sPageDirectory[base / (1024 * 1024)]
sPageDirectory[VADDR_TO_PDENT(base)]
= (uint32)pageTable | MMU_L1_TYPE_COARSEPAGETABLE;
}
@ -383,20 +368,17 @@ map_page(addr_t virtualAddress, addr_t physicalAddress, uint32 flags)
physicalAddress &= ~(B_PAGE_SIZE - 1);
// map the page to the correct page table
uint32 *pageTable = (uint32 *)(sPageDirectory[virtualAddress
/ (1024 * 1024)] & 0xfffffc00);
TRACE(("map_page: pageTable 0x%lx\n", (sPageDirectory[virtualAddress
/ (1024 * 1024)] & 0xfffffc00) ));
if(pageTable == NULL){
// TRACE(("panic"));
// panic("map:page no page_directory entry!!!");
uint32 *pageTable = (uint32 *)(sPageDirectory[VADDR_TO_PDENT(virtualAddress)]
& ARM_PDE_ADDRESS_MASK);
TRACE(("map_page: pageTable 0x%lx\n", (sPageDirectory[VADDR_TO_PDENT(virtualAddress)]
& ARM_PDE_ADDRESS_MASK) ));
if(pageTable == NULL) {
add_page_table(virtualAddress);
pageTable = (uint32 *)(sPageDirectory[virtualAddress
/ (1024 * 1024)] & 0xfffffc00);
pageTable = (uint32 *)(sPageDirectory[VADDR_TO_PDENT(virtualAddress)]
& ARM_PDE_ADDRESS_MASK);
}
uint32 tableEntry = (virtualAddress % (B_PAGE_SIZE * 256)) / B_PAGE_SIZE;
uint32 tableEntry = VADDR_TO_PTENT(virtualAddress);
TRACE(("map_page: inserting pageTable %p, tableEntry %ld, physicalAddress "
"%p\n", pageTable, tableEntry, physicalAddress));
@ -439,12 +421,11 @@ unmap_page(addr_t virtualAddress)
}
// unmap the page from the correct page table
uint32 *pageTable = (uint32 *)(sPageDirectory[virtualAddress
/ (B_PAGE_SIZE * 1024)] & 0xfffff000);
pageTable[(virtualAddress % (B_PAGE_SIZE * 1024)) / B_PAGE_SIZE] = 0;
uint32 *pageTable = (uint32 *)(sPageDirectory[VADDR_TO_PDENT(virtualAddress)]
& ARM_PDE_ADDRESS_MASK);
pageTable[VADDR_TO_PTENT(virtualAddress)] = 0;
mmu_flush_TLB();
}
@ -469,7 +450,7 @@ mmu_allocate(void *virtualAddress, size_t size)
if (address < KERNEL_BASE
|| address + size >= KERNEL_BASE + kMaxKernelSize){
TRACE(("mmu_allocate in illegal range\n address: %lx"
" KERNELBASE: %lx KERNEL_BASE + kMaxKernelSize: %lx address + size : %lx \n ",
" KERNELBASE: %lx KERNEL_BASE + kMaxKernelSize: %lx address + size : %lx \n",
(uint32)address , KERNEL_BASE, KERNEL_BASE + kMaxKernelSize,(uint32)(address + size)));
return NULL;
}
@ -578,7 +559,7 @@ mmu_init(void)
uint32 highestRAMAddress = SDRAM_BASE;
//calculate lowest RAM adress from MEMORYMAP
for(int i = 0; i < ARRAY_SIZE(LOADER_MEMORYMAP); i++) {
for(uint32 i = 0; i < ARRAY_SIZE(LOADER_MEMORYMAP); i++) {
if (strcmp("RAM_free", LOADER_MEMORYMAP[i].name) == 0)
sNextPhysicalAddress = LOADER_MEMORYMAP[i].start;