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-rw-r--r--qemu/roms/openbios/arch/ppc/ofmem.c308
1 files changed, 0 insertions, 308 deletions
diff --git a/qemu/roms/openbios/arch/ppc/ofmem.c b/qemu/roms/openbios/arch/ppc/ofmem.c
deleted file mode 100644
index c9b066ed6..000000000
--- a/qemu/roms/openbios/arch/ppc/ofmem.c
+++ /dev/null
@@ -1,308 +0,0 @@
-/*
- * Creation Date: <1999/11/07 19:02:11 samuel>
- * Time-stamp: <2004/01/07 19:42:36 samuel>
- *
- * <ofmem.c>
- *
- * OF Memory manager
- *
- * Copyright (C) 1999-2004 Samuel Rydh (samuel@ibrium.se)
- * Copyright (C) 2004 Stefan Reinauer
- *
- * This program 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
- *
- */
-
-/* TODO: Clean up MOLisms in a decent way */
-
-#include "config.h"
-#include "libopenbios/bindings.h"
-#include "libc/string.h"
-#include "libopenbios/ofmem.h"
-#include "kernel.h"
-#ifdef I_WANT_MOLISMS
-#include "mol/prom.h"
-#include "mol/mol.h"
-#endif
-#include "mmutypes.h"
-#include "asm/processor.h"
-#ifdef I_WANT_MOLISMS
-#include "osi_calls.h"
-#endif
-
-#define BIT(n) (1U<<(31-(n)))
-
-/* called from assembly */
-extern void dsi_exception( void );
-extern void isi_exception( void );
-extern void setup_mmu( unsigned long code_base, unsigned long code_size, unsigned long ramsize );
-
-/****************************************************************
- * Memory usage (before of_quiesce is called)
- *
- * Physical
- *
- * 0x00000000 Exception vectors
- * 0x00004000 Free space
- * 0x01e00000 Open Firmware (us)
- * 0x01f00000 OF allocations
- * 0x01ff0000 PTE Hash
- * 0x02000000- Free space
- *
- * Allocations grow downwards from 0x01e00000
- *
- ****************************************************************/
-
-#define HASH_SIZE (2 << 15)
-#define SEGR_BASE 0x400 /* segment number range to use */
-
-#define FREE_BASE_1 0x00004000
-#define OF_CODE_START 0x01e00000
-/* #define OF_MALLOC_BASE 0x01f00000 */
-extern char _end[];
-#define OF_MALLOC_BASE _end
-
-#define HASH_BASE (0x02000000 - HASH_SIZE)
-#define FREE_BASE_2 0x02000000
-
-#define RAMSIZE 0x02000000 /* XXXXXXXXXXXXXXXXXXX FIXME XXXXXXXXXXXXXXX */
-
-static ofmem_t s_ofmem;
-
-#define IO_BASE 0x80000000
-#define OFMEM (&s_ofmem)
-
-static inline unsigned long
-get_hash_base( void )
-{
- return HASH_BASE;
-}
-
-static inline unsigned long
-get_hash_size( void )
-{
- return HASH_SIZE;
-}
-
-static ucell get_heap_top( void )
-{
- return HASH_BASE;
-}
-
-static inline size_t ALIGN_SIZE(size_t x, size_t a)
-{
- return (x + a - 1) & ~(a-1);
-}
-
-ofmem_t* ofmem_arch_get_private(void)
-{
- return OFMEM;
-}
-
-void* ofmem_arch_get_malloc_base(void)
-{
- return OF_MALLOC_BASE;
-}
-
-ucell ofmem_arch_get_heap_top(void)
-{
- return get_heap_top();
-}
-
-ucell ofmem_arch_get_virt_top(void)
-{
- return IO_BASE;
-}
-
-void ofmem_arch_unmap_pages(ucell virt, ucell size)
-{
- /* kill page mappings in provided range */
-}
-
-void ofmem_arch_map_pages(ucell phys, ucell virt, ucell size, ucell mode)
-{
- /* none yet */
-}
-
-/************************************************************************/
-/* OF private allocations */
-/************************************************************************/
-
-void *
-malloc( int size )
-{
- return ofmem_malloc(size);
-}
-
-void
-free( void *ptr )
-{
- return ofmem_free(ptr);
-}
-
-void *
-realloc( void *ptr, size_t size )
-{
- return ofmem_realloc(ptr, size);
-}
-
-
-/************************************************************************/
-/* misc */
-/************************************************************************/
-
-ucell ofmem_arch_default_translation_mode( ucell phys )
-{
- /* XXX: Guard bit not set as it should! */
- if( phys < IO_BASE || phys >= 0xffc00000 )
- return 0x02; /*0xa*/ /* wim GxPp */
- return 0x6a; /* WIm GxPp, I/O */
-}
-
-
-/************************************************************************/
-/* page fault handler */
-/************************************************************************/
-
-static ucell
-ea_to_phys( ucell ea, ucell *mode )
-{
- ucell phys;
-
- /* hardcode our translation needs */
- if( ea >= OF_CODE_START && ea < FREE_BASE_2 ) {
- *mode = ofmem_arch_default_translation_mode( ea );
- return ea;
- }
-
- phys = ofmem_translate(ea, mode);
- if( phys == (ucell)-1 ) {
-#ifdef I_WANT_MOLISMS
- if( ea != 0x80816c00 )
- printk("ea_to_phys: no translation for %08lx, using 1-1\n", ea );
-#endif
- phys = ea;
- *mode = ofmem_arch_default_translation_mode( phys );
-
-#ifdef I_WANT_MOLISMS
- forth_segv_handler( (char*)ea );
- OSI_Debugger(1);
-#endif
- /* print_virt_range(); */
- /* print_phys_range(); */
- /* print_trans(); */
- }
- return phys;
-}
-
-static void
-hash_page( ucell ea, ucell phys, ucell mode )
-{
- static int next_grab_slot=0;
- unsigned long *upte, cmp, hash1;
- int i, vsid, found;
- mPTE_t *pp;
-
- vsid = (ea>>28) + SEGR_BASE;
- cmp = BIT(0) | (vsid << 7) | ((ea & 0x0fffffff) >> 22);
-
- hash1 = vsid;
- hash1 ^= (ea >> 12) & 0xffff;
- hash1 &= (get_hash_size() - 1) >> 6;
-
- pp = (mPTE_t*)(get_hash_base() + (hash1 << 6));
- upte = (unsigned long*)pp;
-
- /* replace old translation */
- for( found=0, i=0; !found && i<8; i++ )
- if( cmp == upte[i*2] )
- found=1;
-
- /* otherwise use a free slot */
- for( i=0; !found && i<8; i++ )
- if( !pp[i].v )
- found=1;
-
- /* out of slots, just evict one */
- if( !found ) {
- i = next_grab_slot + 1;
- next_grab_slot = (next_grab_slot + 1) % 8;
- }
- i--;
- upte[i*2] = cmp;
- upte[i*2+1] = (phys & ~0xfff) | mode;
-
- asm volatile( "tlbie %0" :: "r"(ea) );
-}
-
-void
-dsi_exception( void )
-{
- unsigned long dar, dsisr;
- ucell mode;
- ucell phys;
-
- asm volatile("mfdar %0" : "=r" (dar) : );
- asm volatile("mfdsisr %0" : "=r" (dsisr) : );
-
- //printk("dsi-exception @ %08lx <%08lx>\n", dar, dsisr );
-
- phys = ea_to_phys(dar, &mode);
- hash_page( dar, phys, mode );
-}
-
-void
-isi_exception( void )
-{
- unsigned long nip, srr1;
- ucell mode;
- ucell phys;
-
- asm volatile("mfsrr0 %0" : "=r" (nip) : );
- asm volatile("mfsrr1 %0" : "=r" (srr1) : );
-
- //printk("isi-exception @ %08lx <%08lx>\n", nip, srr1 );
-
- phys = ea_to_phys(nip, &mode);
- hash_page( nip, phys, mode );
-}
-
-
-/************************************************************************/
-/* init / cleanup */
-/************************************************************************/
-
-void
-setup_mmu( unsigned long code_base, unsigned long code_size, unsigned long ramsize )
-{
- unsigned long sdr1 = HASH_BASE | ((HASH_SIZE-1) >> 16);
- unsigned long sr_base = (0x20 << 24) | SEGR_BASE;
- unsigned long msr;
- int i;
-
- asm volatile("mtsdr1 %0" :: "r" (sdr1) );
- for( i=0; i<16; i++ ) {
- int j = i << 28;
- asm volatile("mtsrin %0,%1" :: "r" (sr_base + i), "r" (j) );
- }
- asm volatile("mfmsr %0" : "=r" (msr) : );
- msr |= MSR_IR | MSR_DR;
- asm volatile("mtmsr %0" :: "r" (msr) );
-}
-
-void
-ofmem_init( void )
-{
- ofmem_t *ofmem = OFMEM;
- /* In case we can't rely on memory being zero initialized */
- memset(ofmem, 0, sizeof(ofmem));
-
- ofmem->ramsize = RAMSIZE;
-
- ofmem_claim_phys( 0, FREE_BASE_1, 0 );
- ofmem_claim_virt( 0, FREE_BASE_1, 0 );
- ofmem_claim_phys( OF_CODE_START, FREE_BASE_2 - OF_CODE_START, 0 );
- ofmem_claim_virt( OF_CODE_START, FREE_BASE_2 - OF_CODE_START, 0 );
-}