powerpc: Move l2cr.S over to arch/powerpc

No functional changes, but call it l2cr_6xx.S since it is specific
to 6xx-family (including G3/750 and G4/74xx) processors.

Signed-off-by: Paul Mackerras <paulus@samba.org>

2 files changed, 2 insertions, 473 deletions

diff --git a/arch/ppc/kernel/Makefile b/arch/ppc/kernel/Makefile
index 1b2c7458a3d0..3d50a2686839 100644
--- a/arch/ppc/kernel/Makefile
+++ b/arch/ppc/kernel/Makefile
@@ -13,7 +13,7 @@ extra-y				+= vmlinux.lds
 obj-y                           := entry.o traps.o time.o misc.o \
                                         setup.o \
                                         ppc_htab.o
-obj-$(CONFIG_6xx)               += l2cr.o cpu_setup_6xx.o
+obj-$(CONFIG_6xx)               += cpu_setup_6xx.o
 obj-$(CONFIG_SOFTWARE_SUSPEND)  += swsusp.o
 obj-$(CONFIG_MODULES)           += module.o ppc_ksyms.o
 obj-$(CONFIG_NOT_COHERENT_CACHE)        += dma-mapping.o
@@ -34,7 +34,7 @@ endif
 # These are here while we do the architecture merge
 
 else
-obj-$(CONFIG_6xx)               += l2cr.o cpu_setup_6xx.o
+obj-$(CONFIG_6xx)               += cpu_setup_6xx.o
 obj-$(CONFIG_SOFTWARE_SUSPEND)  += swsusp.o
 obj-$(CONFIG_MODULES)           += module.o
 obj-$(CONFIG_NOT_COHERENT_CACHE)        += dma-mapping.o
diff --git a/arch/ppc/kernel/l2cr.S b/arch/ppc/kernel/l2cr.S
deleted file mode 100644
index d7f4e982b539..000000000000
--- a/arch/ppc/kernel/l2cr.S
+++ /dev/null
@@ -1,471 +0,0 @@
-/*
-        L2CR functions
-        Copyright © 1997-1998 by PowerLogix R & D, Inc.
-
-        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.
-
-        This program is distributed in the hope that it will be useful,
-        but WITHOUT ANY WARRANTY; without even the implied warranty of
-        MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-        GNU General Public License for more details.
-
-        You should have received a copy of the GNU General Public License
-        along with this program; if not, write to the Free Software
-        Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
-*/
-/*
-        Thur, Dec. 12, 1998.
-        - First public release, contributed by PowerLogix.
-        ***********
-        Sat, Aug. 7, 1999.
-        - Terry: Made sure code disabled interrupts before running. (Previously
-                        it was assumed interrupts were already disabled).
-        - Terry: Updated for tentative G4 support.  4MB of memory is now flushed
-                        instead of 2MB.  (Prob. only 3 is necessary).
-        - Terry: Updated for workaround to HID0[DPM] processor bug
-                        during global invalidates.
-        ***********
-        Thu, July 13, 2000.
-        - Terry: Added isync to correct for an errata.
-
-        22 August 2001.
-        - DanM: Finally added the 7450 patch I've had for the past
-                several months.  The L2CR is similar, but I'm going
-                to assume the user of this functions knows what they
-                are doing.
-
-        Author: Terry Greeniaus (tgree@phys.ualberta.ca)
-        Please e-mail updates to this file to me, thanks!
-*/
-#include <linux/config.h>
-#include <asm/processor.h>
-#include <asm/cputable.h>
-#include <asm/ppc_asm.h>
-#include <asm/cache.h>
-#include <asm/page.h>
-
-/* Usage:
-
-        When setting the L2CR register, you must do a few special
-        things.  If you are enabling the cache, you must perform a
-        global invalidate.  If you are disabling the cache, you must
-        flush the cache contents first.  This routine takes care of
-        doing these things.  When first enabling the cache, make sure
-        you pass in the L2CR you want, as well as passing in the
-        global invalidate bit set.  A global invalidate will only be
-        performed if the L2I bit is set in applyThis.  When enabling
-        the cache, you should also set the L2E bit in applyThis.  If
-        you want to modify the L2CR contents after the cache has been
-        enabled, the recommended procedure is to first call
-        __setL2CR(0) to disable the cache and then call it again with
-        the new values for L2CR.  Examples:
-
-        _setL2CR(0)             - disables the cache
-        _setL2CR(0xB3A04000)    - enables my G3 upgrade card:
-                                - L2E set to turn on the cache
-                                - L2SIZ set to 1MB
-                                - L2CLK set to 1:1
-                                - L2RAM set to pipelined synchronous late-write
-                                - L2I set to perform a global invalidation
-                                - L2OH set to 0.5 nS
-                                - L2DF set because this upgrade card
-                                  requires it
-
-        A similar call should work for your card.  You need to know
-        the correct setting for your card and then place them in the
-        fields I have outlined above.  Other fields support optional
-        features, such as L2DO which caches only data, or L2TS which
-        causes cache pushes from the L1 cache to go to the L2 cache
-        instead of to main memory.
-
-IMPORTANT:
-        Starting with the 7450, the bits in this register have moved
-        or behave differently.  The Enable, Parity Enable, Size,
-        and L2 Invalidate are the only bits that have not moved.
-        The size is read-only for these processors with internal L2
-        cache, and the invalidate is a control as well as status.
-                -- Dan
-
-*/
-/*
- * Summary: this procedure ignores the L2I bit in the value passed in,
- * flushes the cache if it was already enabled, always invalidates the
- * cache, then enables the cache if the L2E bit is set in the value
- * passed in.
- *   -- paulus.
- */
-_GLOBAL(_set_L2CR)
-        /* Make sure this is a 750 or 7400 chip */
-BEGIN_FTR_SECTION
-        li      r3,-1
-        blr
-END_FTR_SECTION_IFCLR(CPU_FTR_L2CR)
-
-        mflr    r9
-
-        /* Stop DST streams */
-BEGIN_FTR_SECTION
-        DSSALL
-        sync
-END_FTR_SECTION_IFSET(CPU_FTR_ALTIVEC)
-
-        /* Turn off interrupts and data relocation. */
-        mfmsr   r7              /* Save MSR in r7 */
-        rlwinm  r4,r7,0,17,15
-        rlwinm  r4,r4,0,28,26   /* Turn off DR bit */
-        sync
-        mtmsr   r4
-        isync
-
-        /* Before we perform the global invalidation, we must disable dynamic
-         * power management via HID0[DPM] to work around a processor bug where
-         * DPM can possibly interfere with the state machine in the processor
-         * that invalidates the L2 cache tags.
-         */
-        mfspr   r8,SPRN_HID0            /* Save HID0 in r8 */
-        rlwinm  r4,r8,0,12,10           /* Turn off HID0[DPM] */
-        sync
-        mtspr   SPRN_HID0,r4            /* Disable DPM */
-        sync
-
-        /* Get the current enable bit of the L2CR into r4 */
-        mfspr   r4,SPRN_L2CR
-
-        /* Tweak some bits */
-        rlwinm  r5,r3,0,0,0             /* r5 contains the new enable bit */
-        rlwinm  r3,r3,0,11,9            /* Turn off the invalidate bit */
-        rlwinm  r3,r3,0,1,31            /* Turn off the enable bit */
-
-        /* Check to see if we need to flush */
-        rlwinm. r4,r4,0,0,0
-        beq     2f
-
-        /* Flush the cache. First, read the first 4MB of memory (physical) to
-         * put new data in the cache.  (Actually we only need
-         * the size of the L2 cache plus the size of the L1 cache, but 4MB will
-         * cover everything just to be safe).
-         */
-
-         /**** Might be a good idea to set L2DO here - to prevent instructions
-               from getting into the cache.  But since we invalidate
-               the next time we enable the cache it doesn't really matter.
-               Don't do this unless you accomodate all processor variations.
-               The bit moved on the 7450.....
-          ****/
-
-BEGIN_FTR_SECTION
-        /* Disable L2 prefetch on some 745x and try to ensure
-         * L2 prefetch engines are idle. As explained by errata
-         * text, we can't be sure they are, we just hope very hard
-         * that well be enough (sic !). At least I noticed Apple
-         * doesn't even bother doing the dcbf's here...
-         */
-        mfspr   r4,SPRN_MSSCR0
-        rlwinm  r4,r4,0,0,29
-        sync
-        mtspr   SPRN_MSSCR0,r4
-        sync
-        isync
-        lis     r4,KERNELBASE@h
-        dcbf    0,r4
-        dcbf    0,r4
-        dcbf    0,r4
-        dcbf    0,r4
-END_FTR_SECTION_IFSET(CPU_FTR_SPEC7450)
-
-        /* TODO: use HW flush assist when available */
-
-        lis     r4,0x0002
-        mtctr   r4
-        li      r4,0
-1:
-        lwzx    r0,r0,r4
-        addi    r4,r4,32                /* Go to start of next cache line */
-        bdnz    1b
-        isync
-
-        /* Now, flush the first 4MB of memory */
-        lis     r4,0x0002
-        mtctr   r4
-        li      r4,0
-        sync
-1:
-        dcbf    0,r4
-        addi    r4,r4,32                /* Go to start of next cache line */
-        bdnz    1b
-
-2:
-        /* Set up the L2CR configuration bits (and switch L2 off) */
-        /* CPU errata: Make sure the mtspr below is already in the
-         * L1 icache
-         */
-        b       20f
-        .balign L1_CACHE_BYTES
-22:
-        sync
-        mtspr   SPRN_L2CR,r3
-        sync
-        b       23f
-20:
-        b       21f
-21:     sync
-        isync
-        b       22b
-
-23:
-        /* Perform a global invalidation */
-        oris    r3,r3,0x0020
-        sync
-        mtspr   SPRN_L2CR,r3
-        sync
-        isync                           /* For errata */
-
-BEGIN_FTR_SECTION
-        /* On the 7450, we wait for the L2I bit to clear......
-        */
-10:     mfspr   r3,SPRN_L2CR
-        andis.  r4,r3,0x0020
-        bne     10b
-        b       11f
-END_FTR_SECTION_IFSET(CPU_FTR_SPEC7450)
-
-        /* Wait for the invalidation to complete */
-3:      mfspr   r3,SPRN_L2CR
-        rlwinm. r4,r3,0,31,31
-        bne     3b
-
-11:     rlwinm  r3,r3,0,11,9            /* Turn off the L2I bit */
-        sync
-        mtspr   SPRN_L2CR,r3
-        sync
-
-        /* See if we need to enable the cache */
-        cmplwi  r5,0
-        beq     4f
-
-        /* Enable the cache */
-        oris    r3,r3,0x8000
-        mtspr   SPRN_L2CR,r3
-        sync
-        
-        /* Enable L2 HW prefetch on 744x/745x */
-BEGIN_FTR_SECTION
-        mfspr   r3,SPRN_MSSCR0
-        ori     r3,r3,3
-        sync
-        mtspr   SPRN_MSSCR0,r3
-        sync
-        isync
-END_FTR_SECTION_IFSET(CPU_FTR_SPEC7450)
-4:
-
-        /* Restore HID0[DPM] to whatever it was before */
-        sync
-        mtspr   1008,r8
-        sync
-
-        /* Restore MSR (restores EE and DR bits to original state) */
-        SYNC
-        mtmsr   r7
-        isync
-
-        mtlr    r9
-        blr
-
-_GLOBAL(_get_L2CR)
-        /* Return the L2CR contents */
-        li      r3,0
-BEGIN_FTR_SECTION
-        mfspr   r3,SPRN_L2CR
-END_FTR_SECTION_IFSET(CPU_FTR_L2CR)
-        blr
-
-
-/*
- * Here is a similar routine for dealing with the L3 cache
- * on the 745x family of chips
- */
-
-_GLOBAL(_set_L3CR)
-        /* Make sure this is a 745x chip */
-BEGIN_FTR_SECTION
-        li      r3,-1
-        blr
-END_FTR_SECTION_IFCLR(CPU_FTR_L3CR)
-
-        /* Turn off interrupts and data relocation. */
-        mfmsr   r7              /* Save MSR in r7 */
-        rlwinm  r4,r7,0,17,15
-        rlwinm  r4,r4,0,28,26   /* Turn off DR bit */
-        sync
-        mtmsr   r4
-        isync
-
-        /* Stop DST streams */
-        DSSALL
-        sync
-
-        /* Get the current enable bit of the L3CR into r4 */
-        mfspr   r4,SPRN_L3CR
-
-        /* Tweak some bits */
-        rlwinm  r5,r3,0,0,0             /* r5 contains the new enable bit */
-        rlwinm  r3,r3,0,22,20           /* Turn off the invalidate bit */
-        rlwinm  r3,r3,0,2,31            /* Turn off the enable & PE bits */
-        rlwinm  r3,r3,0,5,3             /* Turn off the clken bit */
-        /* Check to see if we need to flush */
-        rlwinm. r4,r4,0,0,0
-        beq     2f
-
-        /* Flush the cache.
-         */
-
-        /* TODO: use HW flush assist */
-
-        lis     r4,0x0008
-        mtctr   r4
-        li      r4,0
-1:
-        lwzx    r0,r0,r4
-        dcbf    0,r4
-        addi    r4,r4,32                /* Go to start of next cache line */
-        bdnz    1b
-
-2:
-        /* Set up the L3CR configuration bits (and switch L3 off) */
-        sync
-        mtspr   SPRN_L3CR,r3
-        sync
-
-        oris    r3,r3,L3CR_L3RES@h              /* Set reserved bit 5 */
-        mtspr   SPRN_L3CR,r3
-        sync
-        oris    r3,r3,L3CR_L3CLKEN@h            /* Set clken */
-        mtspr   SPRN_L3CR,r3
-        sync
-
-        /* Wait for stabilize */
-        li      r0,256
-        mtctr   r0
-1:      bdnz    1b
-
-        /* Perform a global invalidation */
-        ori     r3,r3,0x0400
-        sync
-        mtspr   SPRN_L3CR,r3
-        sync
-        isync
-
-        /* We wait for the L3I bit to clear...... */
-10:     mfspr   r3,SPRN_L3CR
-        andi.   r4,r3,0x0400
-        bne     10b
-
-        /* Clear CLKEN */
-        rlwinm  r3,r3,0,5,3             /* Turn off the clken bit */
-        mtspr   SPRN_L3CR,r3
-        sync
-
-        /* Wait for stabilize */
-        li      r0,256
-        mtctr   r0
-1:      bdnz    1b
-
-        /* See if we need to enable the cache */
-        cmplwi  r5,0
-        beq     4f
-
-        /* Enable the cache */
-        oris    r3,r3,(L3CR_L3E | L3CR_L3CLKEN)@h
-        mtspr   SPRN_L3CR,r3
-        sync
-
-        /* Wait for stabilize */
-        li      r0,256
-        mtctr   r0
-1:      bdnz    1b
-
-        /* Restore MSR (restores EE and DR bits to original state) */
-4:      SYNC
-        mtmsr   r7
-        isync
-        blr
-
-_GLOBAL(_get_L3CR)
-        /* Return the L3CR contents */
-        li      r3,0
-BEGIN_FTR_SECTION
-        mfspr   r3,SPRN_L3CR
-END_FTR_SECTION_IFSET(CPU_FTR_L3CR)
-        blr
-
-/* --- End of PowerLogix code ---
- */
-
-
-/* flush_disable_L1()   - Flush and disable L1 cache
- *
- * clobbers r0, r3, ctr, cr0
- * Must be called with interrupts disabled and MMU enabled.
- */
-_GLOBAL(__flush_disable_L1)
-        /* Stop pending alitvec streams and memory accesses */
-BEGIN_FTR_SECTION
-        DSSALL
-END_FTR_SECTION_IFSET(CPU_FTR_ALTIVEC)
-        sync
-
-        /* Load counter to 0x4000 cache lines (512k) and
-         * load cache with datas
-         */
-        li      r3,0x4000       /* 512kB / 32B */
-        mtctr   r3
-        lis     r3,KERNELBASE@h
-1:
-        lwz     r0,0(r3)
-        addi    r3,r3,0x0020    /* Go to start of next cache line */
-        bdnz    1b
-        isync
-        sync
-
-        /* Now flush those cache lines */
-        li      r3,0x4000       /* 512kB / 32B */
-        mtctr   r3
-        lis     r3,KERNELBASE@h
-1:
-        dcbf    0,r3
-        addi    r3,r3,0x0020    /* Go to start of next cache line */
-        bdnz    1b
-        sync
-
-        /* We can now disable the L1 cache (HID0:DCE, HID0:ICE) */
-        mfspr   r3,SPRN_HID0
-        rlwinm  r3,r3,0,18,15
-        mtspr   SPRN_HID0,r3
-        sync
-        isync
-        blr
-
-/* inval_enable_L1      - Invalidate and enable L1 cache
- *
- * Assumes L1 is already disabled and MSR:EE is off
- *
- * clobbers r3
- */
-_GLOBAL(__inval_enable_L1)
-        /* Enable and then Flash inval the instruction & data cache */
-        mfspr   r3,SPRN_HID0
-        ori     r3,r3, HID0_ICE|HID0_ICFI|HID0_DCE|HID0_DCI
-        sync
-        isync
-        mtspr   SPRN_HID0,r3
-        xori    r3,r3, HID0_ICFI|HID0_DCI
-        mtspr   SPRN_HID0,r3
-        sync
-
-        blr
-
-