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-rw-r--r--arch/ppc/mm/Makefile1
-rw-r--r--arch/ppc/mm/fsl_booke_mmu.c236
-rw-r--r--arch/ppc/mm/init.c6
-rw-r--r--arch/ppc/mm/mmu_decl.h6
-rw-r--r--arch/ppc/mm/pgtable.c28
5 files changed, 0 insertions, 277 deletions
diff --git a/arch/ppc/mm/Makefile b/arch/ppc/mm/Makefile
index cd3eae147cf..691ba2bae05 100644
--- a/arch/ppc/mm/Makefile
+++ b/arch/ppc/mm/Makefile
@@ -8,4 +8,3 @@ obj-y := fault.o init.o mem_pieces.o \
obj-$(CONFIG_PPC_STD_MMU) += hashtable.o ppc_mmu.o tlb.o
obj-$(CONFIG_40x) += 4xx_mmu.o
obj-$(CONFIG_44x) += 44x_mmu.o
-obj-$(CONFIG_FSL_BOOKE) += fsl_booke_mmu.o
diff --git a/arch/ppc/mm/fsl_booke_mmu.c b/arch/ppc/mm/fsl_booke_mmu.c
deleted file mode 100644
index 123da03ab11..00000000000
--- a/arch/ppc/mm/fsl_booke_mmu.c
+++ /dev/null
@@ -1,236 +0,0 @@
-/*
- * Modifications by Kumar Gala (galak@kernel.crashing.org) to support
- * E500 Book E processors.
- *
- * Copyright 2004 Freescale Semiconductor, Inc
- *
- * This file contains the routines for initializing the MMU
- * on the 4xx series of chips.
- * -- paulus
- *
- * Derived from arch/ppc/mm/init.c:
- * Copyright (C) 1995-1996 Gary Thomas (gdt@linuxppc.org)
- *
- * Modifications by Paul Mackerras (PowerMac) (paulus@cs.anu.edu.au)
- * and Cort Dougan (PReP) (cort@cs.nmt.edu)
- * Copyright (C) 1996 Paul Mackerras
- * Amiga/APUS changes by Jesper Skov (jskov@cygnus.co.uk).
- *
- * Derived from "arch/i386/mm/init.c"
- * Copyright (C) 1991, 1992, 1993, 1994 Linus Torvalds
- *
- * 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; either version
- * 2 of the License, or (at your option) any later version.
- *
- */
-
-#include <linux/signal.h>
-#include <linux/sched.h>
-#include <linux/kernel.h>
-#include <linux/errno.h>
-#include <linux/string.h>
-#include <linux/types.h>
-#include <linux/ptrace.h>
-#include <linux/mman.h>
-#include <linux/mm.h>
-#include <linux/swap.h>
-#include <linux/stddef.h>
-#include <linux/vmalloc.h>
-#include <linux/init.h>
-#include <linux/delay.h>
-#include <linux/highmem.h>
-
-#include <asm/pgalloc.h>
-#include <asm/prom.h>
-#include <asm/io.h>
-#include <asm/mmu_context.h>
-#include <asm/pgtable.h>
-#include <asm/mmu.h>
-#include <asm/uaccess.h>
-#include <asm/smp.h>
-#include <asm/bootx.h>
-#include <asm/machdep.h>
-#include <asm/setup.h>
-
-extern void loadcam_entry(unsigned int index);
-unsigned int tlbcam_index;
-unsigned int num_tlbcam_entries;
-static unsigned long __cam0, __cam1, __cam2;
-extern unsigned long total_lowmem;
-extern unsigned long __max_low_memory;
-#define MAX_LOW_MEM CONFIG_LOWMEM_SIZE
-
-#define NUM_TLBCAMS (16)
-
-struct tlbcam {
- u32 MAS0;
- u32 MAS1;
- u32 MAS2;
- u32 MAS3;
- u32 MAS7;
-} TLBCAM[NUM_TLBCAMS];
-
-struct tlbcamrange {
- unsigned long start;
- unsigned long limit;
- phys_addr_t phys;
-} tlbcam_addrs[NUM_TLBCAMS];
-
-extern unsigned int tlbcam_index;
-
-/*
- * Return PA for this VA if it is mapped by a CAM, or 0
- */
-unsigned long v_mapped_by_tlbcam(unsigned long va)
-{
- int b;
- for (b = 0; b < tlbcam_index; ++b)
- if (va >= tlbcam_addrs[b].start && va < tlbcam_addrs[b].limit)
- return tlbcam_addrs[b].phys + (va - tlbcam_addrs[b].start);
- return 0;
-}
-
-/*
- * Return VA for a given PA or 0 if not mapped
- */
-unsigned long p_mapped_by_tlbcam(unsigned long pa)
-{
- int b;
- for (b = 0; b < tlbcam_index; ++b)
- if (pa >= tlbcam_addrs[b].phys
- && pa < (tlbcam_addrs[b].limit-tlbcam_addrs[b].start)
- +tlbcam_addrs[b].phys)
- return tlbcam_addrs[b].start+(pa-tlbcam_addrs[b].phys);
- return 0;
-}
-
-/*
- * Set up one of the I/D BAT (block address translation) register pairs.
- * The parameters are not checked; in particular size must be a power
- * of 4 between 4k and 256M.
- */
-void settlbcam(int index, unsigned long virt, phys_addr_t phys,
- unsigned int size, int flags, unsigned int pid)
-{
- unsigned int tsize, lz;
-
- asm ("cntlzw %0,%1" : "=r" (lz) : "r" (size));
- tsize = (21 - lz) / 2;
-
-#ifdef CONFIG_SMP
- if ((flags & _PAGE_NO_CACHE) == 0)
- flags |= _PAGE_COHERENT;
-#endif
-
- TLBCAM[index].MAS0 = MAS0_TLBSEL(1) | MAS0_ESEL(index) | MAS0_NV(index+1);
- TLBCAM[index].MAS1 = MAS1_VALID | MAS1_IPROT | MAS1_TSIZE(tsize) | MAS1_TID(pid);
- TLBCAM[index].MAS2 = virt & PAGE_MASK;
-
- TLBCAM[index].MAS2 |= (flags & _PAGE_WRITETHRU) ? MAS2_W : 0;
- TLBCAM[index].MAS2 |= (flags & _PAGE_NO_CACHE) ? MAS2_I : 0;
- TLBCAM[index].MAS2 |= (flags & _PAGE_COHERENT) ? MAS2_M : 0;
- TLBCAM[index].MAS2 |= (flags & _PAGE_GUARDED) ? MAS2_G : 0;
- TLBCAM[index].MAS2 |= (flags & _PAGE_ENDIAN) ? MAS2_E : 0;
-
- TLBCAM[index].MAS3 = (phys & PAGE_MASK) | MAS3_SX | MAS3_SR;
- TLBCAM[index].MAS3 |= ((flags & _PAGE_RW) ? MAS3_SW : 0);
-
-#ifndef CONFIG_KGDB /* want user access for breakpoints */
- if (flags & _PAGE_USER) {
- TLBCAM[index].MAS3 |= MAS3_UX | MAS3_UR;
- TLBCAM[index].MAS3 |= ((flags & _PAGE_RW) ? MAS3_UW : 0);
- }
-#else
- TLBCAM[index].MAS3 |= MAS3_UX | MAS3_UR;
- TLBCAM[index].MAS3 |= ((flags & _PAGE_RW) ? MAS3_UW : 0);
-#endif
-
- tlbcam_addrs[index].start = virt;
- tlbcam_addrs[index].limit = virt + size - 1;
- tlbcam_addrs[index].phys = phys;
-
- loadcam_entry(index);
-}
-
-void invalidate_tlbcam_entry(int index)
-{
- TLBCAM[index].MAS0 = MAS0_TLBSEL(1) | MAS0_ESEL(index);
- TLBCAM[index].MAS1 = ~MAS1_VALID;
-
- loadcam_entry(index);
-}
-
-void __init cam_mapin_ram(unsigned long cam0, unsigned long cam1,
- unsigned long cam2)
-{
- settlbcam(0, KERNELBASE, PPC_MEMSTART, cam0, _PAGE_KERNEL, 0);
- tlbcam_index++;
- if (cam1) {
- tlbcam_index++;
- settlbcam(1, KERNELBASE+cam0, PPC_MEMSTART+cam0, cam1, _PAGE_KERNEL, 0);
- }
- if (cam2) {
- tlbcam_index++;
- settlbcam(2, KERNELBASE+cam0+cam1, PPC_MEMSTART+cam0+cam1, cam2, _PAGE_KERNEL, 0);
- }
-}
-
-/*
- * MMU_init_hw does the chip-specific initialization of the MMU hardware.
- */
-void __init MMU_init_hw(void)
-{
- flush_instruction_cache();
-}
-
-unsigned long __init mmu_mapin_ram(void)
-{
- cam_mapin_ram(__cam0, __cam1, __cam2);
-
- return __cam0 + __cam1 + __cam2;
-}
-
-
-void __init
-adjust_total_lowmem(void)
-{
- unsigned long max_low_mem = MAX_LOW_MEM;
- unsigned long cam_max = 0x10000000;
- unsigned long ram;
-
- /* adjust CAM size to max_low_mem */
- if (max_low_mem < cam_max)
- cam_max = max_low_mem;
-
- /* adjust lowmem size to max_low_mem */
- if (max_low_mem < total_lowmem)
- ram = max_low_mem;
- else
- ram = total_lowmem;
-
- /* Calculate CAM values */
- __cam0 = 1UL << 2 * (__ilog2(ram) / 2);
- if (__cam0 > cam_max)
- __cam0 = cam_max;
- ram -= __cam0;
- if (ram) {
- __cam1 = 1UL << 2 * (__ilog2(ram) / 2);
- if (__cam1 > cam_max)
- __cam1 = cam_max;
- ram -= __cam1;
- }
- if (ram) {
- __cam2 = 1UL << 2 * (__ilog2(ram) / 2);
- if (__cam2 > cam_max)
- __cam2 = cam_max;
- ram -= __cam2;
- }
-
- printk(KERN_INFO "Memory CAM mapping: CAM0=%ldMb, CAM1=%ldMb,"
- " CAM2=%ldMb residual: %ldMb\n",
- __cam0 >> 20, __cam1 >> 20, __cam2 >> 20,
- (total_lowmem - __cam0 - __cam1 - __cam2) >> 20);
- __max_low_memory = max_low_mem = __cam0 + __cam1 + __cam2;
-}
diff --git a/arch/ppc/mm/init.c b/arch/ppc/mm/init.c
index dd898d32480..7444df3889c 100644
--- a/arch/ppc/mm/init.c
+++ b/arch/ppc/mm/init.c
@@ -241,12 +241,6 @@ void __init MMU_init(void)
if (__max_memory && total_memory > __max_memory)
total_memory = __max_memory;
total_lowmem = total_memory;
-#ifdef CONFIG_FSL_BOOKE
- /* Freescale Book-E parts expect lowmem to be mapped by fixed TLB
- * entries, so we need to adjust lowmem to match the amount we can map
- * in the fixed entries */
- adjust_total_lowmem();
-#endif /* CONFIG_FSL_BOOKE */
if (total_lowmem > __max_low_memory) {
total_lowmem = __max_low_memory;
#ifndef CONFIG_HIGHMEM
diff --git a/arch/ppc/mm/mmu_decl.h b/arch/ppc/mm/mmu_decl.h
index b298b60c202..5f813e386b8 100644
--- a/arch/ppc/mm/mmu_decl.h
+++ b/arch/ppc/mm/mmu_decl.h
@@ -58,12 +58,6 @@ extern unsigned int num_tlbcam_entries;
extern void MMU_init_hw(void);
extern unsigned long mmu_mapin_ram(void);
-#elif defined(CONFIG_FSL_BOOKE)
-#define flush_HPTE(pid, va, pg) _tlbie(va, pid)
-extern void MMU_init_hw(void);
-extern unsigned long mmu_mapin_ram(void);
-extern void adjust_total_lowmem(void);
-
#else
/* anything except 4xx or 8xx */
extern void MMU_init_hw(void);
diff --git a/arch/ppc/mm/pgtable.c b/arch/ppc/mm/pgtable.c
index 1f51e6c9450..fadacfd1880 100644
--- a/arch/ppc/mm/pgtable.c
+++ b/arch/ppc/mm/pgtable.c
@@ -42,10 +42,6 @@ int io_bat_index;
#define HAVE_BATS 1
#endif
-#if defined(CONFIG_FSL_BOOKE)
-#define HAVE_TLBCAM 1
-#endif
-
extern char etext[], _stext[];
#ifdef CONFIG_SMP
@@ -63,15 +59,6 @@ void setbat(int index, unsigned long virt, unsigned long phys,
#define p_mapped_by_bats(x) (0UL)
#endif /* HAVE_BATS */
-#ifdef HAVE_TLBCAM
-extern unsigned int tlbcam_index;
-extern unsigned long v_mapped_by_tlbcam(unsigned long va);
-extern unsigned long p_mapped_by_tlbcam(unsigned long pa);
-#else /* !HAVE_TLBCAM */
-#define v_mapped_by_tlbcam(x) (0UL)
-#define p_mapped_by_tlbcam(x) (0UL)
-#endif /* HAVE_TLBCAM */
-
#ifdef CONFIG_PTE_64BIT
/* 44x uses an 8kB pgdir because it has 8-byte Linux PTEs. */
#define PGDIR_ORDER 1
@@ -213,9 +200,6 @@ __ioremap(phys_addr_t addr, unsigned long size, unsigned long flags)
if ((v = p_mapped_by_bats(p)) /*&& p_mapped_by_bats(p+size-1)*/ )
goto out;
- if ((v = p_mapped_by_tlbcam(p)))
- goto out;
-
if (mem_init_done) {
struct vm_struct *area;
area = get_vm_area(size, VM_IOREMAP);
@@ -341,18 +325,6 @@ void __init io_block_mapping(unsigned long virt, phys_addr_t phys,
}
#endif /* HAVE_BATS */
-#ifdef HAVE_TLBCAM
- /*
- * Use a CAM for this if possible...
- */
- if (tlbcam_index < num_tlbcam_entries && is_power_of_4(size)
- && (virt & (size - 1)) == 0 && (phys & (size - 1)) == 0) {
- settlbcam(tlbcam_index, virt, phys, size, flags, 0);
- ++tlbcam_index;
- return;
- }
-#endif /* HAVE_TLBCAM */
-
/* No BATs available, put it in the page tables. */
for (i = 0; i < size; i += PAGE_SIZE)
map_page(virt + i, phys + i, flags);
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-30 16:13:19 +0000