/* SPDX-License-Identifier: GPL-2.0-only */
/*
* linux / arch / arm / mm / proc - xscale . S
*
* Author : Nicolas Pitre
* Created : November 2000
* Copyright : ( C ) 2000 , 2001 MontaVista Software Inc .
*
* MMU functions for the Intel XScale CPUs
*
* 2001 Aug 21 :
* some contributions by Brett Gaines < brett . w . gaines @ intel . com >
* Copyright 2001 by Intel Corp .
*
* 2001 Sep 08 :
* Completely revisited , many important fixes
* Nicolas Pitre < nico @ fluxnic . net >
*/
#include <linux/linkage.h>
#include <linux/init.h>
#include <linux/cfi_types.h>
#include <linux/pgtable.h>
#include <asm/assembler.h>
#include <asm/hwcap.h>
#include <asm/pgtable-hwdef.h>
#include <asm/page.h>
#include <asm/ptrace.h>
#include "proc-macros.S"
/*
* This is the maximum size of an area which will be flushed . If the area
* is larger than this , then we flush the whole cache
*/
#define MAX_AREA_SIZE 32768
/*
* the cache line size of the I and D cache
*/
#define CACHELINESIZE 32
/*
* the size of the data cache
*/
#define CACHESIZE 32768
/*
* Virtual address used to allocate the cache when flushed
*
* This must be an address range which is _ never_ used . It should
* apparently have a mapping in the corresponding page table for
* compatibility with future CPUs that _ could_ require it . For instance we
* don ' t care .
*
* This must be aligned on a 2 * CACHESIZE boundary . The code selects one of
* the 2 areas in alternance each time the clean_d_cache macro is used .
* Without this the XScale core exhibits cache eviction problems and no one
* knows why .
*
* Reminder : the vector table is located at 0 xffff0000 - 0 xffff0fff .
*/
#define CLEAN_ADDR 0 xfffe0000
/*
* This macro is used to wait for a CP15 write and is needed
* when we have to ensure that the last operation to the co - pro
* was completed before continuing with operation .
*/
.macro cpwait, rd
mrc p15, 0 , \rd, c2, c0, 0 @ arbitrary read of cp15
mov \rd, \rd @ wait for completion
sub pc, pc, #4 @ flush instruction pipeline
.endm
.macro cpwait_ret, lr, rd
mrc p15, 0 , \rd, c2, c0, 0 @ arbitrary read of cp15
sub pc, \lr, \rd, LSR #32 @ wait for completion and
@ flush instruction pipeline
.endm
/*
* This macro cleans the entire dcache using line allocate .
* The main loop has been unrolled to reduce loop overhead .
* rd and rs are two scratch registers .
*/
.macro clean_d_cache, rd, rs
ldr \rs, =clean_addr
ldr \rd, [\rs]
eor \rd, \rd, #CACHESIZE
str \rd, [\rs]
add \rs, \rd, #CACHESIZE
1 : mcr p15, 0 , \rd, c7, c2, 5 @ allocate D cache line
add \rd, \rd, #CACHELINESIZE
mcr p15, 0 , \rd, c7, c2, 5 @ allocate D cache line
add \rd, \rd, #CACHELINESIZE
mcr p15, 0 , \rd, c7, c2, 5 @ allocate D cache line
add \rd, \rd, #CACHELINESIZE
mcr p15, 0 , \rd, c7, c2, 5 @ allocate D cache line
add \rd, \rd, #CACHELINESIZE
teq \rd, \rs
bne 1 b
.endm
.data
.align 2
clean_addr: .word CLEAN_ADDR
.text
/*
* cpu_xscale_proc_init ( )
*
* Nothing too exciting at the moment
*/
SYM_TYPED_FUNC_START(cpu_xscale_proc_init)
@ enable write buffer coalescing. Some bootloader disable it
mrc p15, 0 , r1, c1, c0, 1
bic r1, r1, #1
mcr p15, 0 , r1, c1, c0, 1
ret lr
SYM_FUNC_END(cpu_xscale_proc_init)
/*
* cpu_xscale_proc_fin ( )
*/
SYM_TYPED_FUNC_START(cpu_xscale_proc_fin)
mrc p15, 0 , r0, c1, c0, 0 @ ctrl register
bic r0, r0, #0 x1800 @ ...IZ...........
bic r0, r0, #0 x0006 @ .............CA.
mcr p15, 0 , r0, c1, c0, 0 @ disable caches
ret lr
SYM_FUNC_END(cpu_xscale_proc_fin)
/*
* cpu_xscale_reset ( loc )
*
* Perform a soft reset of the system . Put the CPU into the
* same state as it would be if it had been reset , and branch
* to what would be the reset vector .
*
* loc : location to jump to for soft reset
*
* Beware PXA270 erratum E7 .
*/
.align 5
.pushsection .idmap.text, "ax"
SYM_TYPED_FUNC_START(cpu_xscale_reset)
mov r1, #PSR_F_BIT|PSR_I_BIT|SVC_MODE
msr cpsr_c, r1 @ reset CPSR
mcr p15, 0 , r1, c10, c4, 1 @ unlock I-TLB
mcr p15, 0 , r1, c8, c5, 0 @ invalidate I-TLB
mrc p15, 0 , r1, c1, c0, 0 @ ctrl register
bic r1, r1, #0 x0086 @ ........B....CA.
bic r1, r1, #0 x3900 @ ..VIZ..S........
sub pc, pc, #4 @ flush pipeline
@ *** cache line aligned ***
mcr p15, 0 , r1, c1, c0, 0 @ ctrl register
bic r1, r1, #0 x0001 @ ...............M
mcr p15, 0 , ip, c7, c7, 0 @ invalidate I,D caches & BTB
mcr p15, 0 , r1, c1, c0, 0 @ ctrl register
@ CAUTION: MMU turned off from this point. We count on the pipeline
@ already containing those two last instructions to survive.
mcr p15, 0 , ip, c8, c7, 0 @ invalidate I & D TLBs
ret r0
SYM_FUNC_END(cpu_xscale_reset)
.popsection
/*
* cpu_xscale_do_idle ( )
*
* Cause the processor to idle
*
* For now we do nothing but go to idle mode for every case
*
* XScale supports clock switching , but using idle mode support
* allows external hardware to react to system state changes .
*/
.align 5
SYM_TYPED_FUNC_START(cpu_xscale_do_idle)
mov r0, #1
mcr p14, 0 , r0, c7, c0, 0 @ Go to IDLE
ret lr
SYM_FUNC_END(cpu_xscale_do_idle)
/* ================================= CACHE ================================ */
/*
* flush_icache_all ( )
*
* Unconditionally clean and invalidate the entire icache .
*/
SYM_TYPED_FUNC_START(xscale_flush_icache_all)
mov r0, #0
mcr p15, 0 , r0, c7, c5, 0 @ invalidate I cache
ret lr
SYM_FUNC_END(xscale_flush_icache_all)
/*
* flush_user_cache_all ( )
*
* Invalidate all cache entries in a particular address
* space .
*/
SYM_FUNC_ALIAS(xscale_flush_user_cache_all, xscale_flush_kern_cache_all)
/*
* flush_kern_cache_all ( )
*
* Clean and invalidate the entire cache .
*/
SYM_TYPED_FUNC_START(xscale_flush_kern_cache_all)
mov r2, #VM_EXEC
mov ip, #0
__flush_whole_cache:
clean_d_cache r0, r1
tst r2, #VM_EXEC
mcrne p15, 0 , ip, c7, c5, 0 @ Invalidate I cache & BTB
mcrne p15, 0 , ip, c7, c10, 4 @ Drain Write (& Fill) Buffer
ret lr
SYM_FUNC_END(xscale_flush_kern_cache_all)
/*
* flush_user_cache_range ( start , end , vm_flags )
*
* Invalidate a range of cache entries in the specified
* address space .
*
* - start - start address ( may not be aligned )
* - end - end address ( exclusive , may not be aligned )
* - vma - vma_area_struct describing address space
*/
.align 5
SYM_TYPED_FUNC_START(xscale_flush_user_cache_range)
mov ip, #0
sub r3, r1, r0 @ calculate total size
cmp r3, #MAX_AREA_SIZE
bhs __flush_whole_cache
1 : tst r2, #VM_EXEC
mcrne p15, 0 , r0, c7, c5, 1 @ Invalidate I cache line
mcr p15, 0 , r0, c7, c10, 1 @ Clean D cache line
mcr p15, 0 , r0, c7, c6, 1 @ Invalidate D cache line
add r0, r0, #CACHELINESIZE
cmp r0, r1
blo 1 b
tst r2, #VM_EXEC
mcrne p15, 0 , ip, c7, c5, 6 @ Invalidate BTB
mcrne p15, 0 , ip, c7, c10, 4 @ Drain Write (& Fill) Buffer
ret lr
SYM_FUNC_END(xscale_flush_user_cache_range)
/*
* coherent_kern_range ( start , end )
*
* Ensure coherency between the Icache and the Dcache in the
* region described by start . If you have non - snooping
* Harvard caches , you need to implement this function .
*
* - start - virtual start address
* - end - virtual end address
*
* Note : single I - cache line invalidation isn ' t used here since
* it also trashes the mini I - cache used by JTAG debuggers .
*/
SYM_TYPED_FUNC_START(xscale_coherent_kern_range)
bic r0, r0, #CACHELINESIZE - 1
1 : mcr p15, 0 , r0, c7, c10, 1 @ clean D entry
add r0, r0, #CACHELINESIZE
cmp r0, r1
blo 1 b
mov r0, #0
mcr p15, 0 , r0, c7, c5, 0 @ Invalidate I cache & BTB
mcr p15, 0 , r0, c7, c10, 4 @ Drain Write (& Fill) Buffer
ret lr
SYM_FUNC_END(xscale_coherent_kern_range)
/*
* coherent_user_range ( start , end )
*
* Ensure coherency between the Icache and the Dcache in the
* region described by start . If you have non - snooping
* Harvard caches , you need to implement this function .
*
* - start - virtual start address
* - end - virtual end address
*/
SYM_TYPED_FUNC_START(xscale_coherent_user_range)
bic r0, r0, #CACHELINESIZE - 1
1 : mcr p15, 0 , r0, c7, c10, 1 @ clean D entry
mcr p15, 0 , r0, c7, c5, 1 @ Invalidate I cache entry
add r0, r0, #CACHELINESIZE
cmp r0, r1
blo 1 b
mov r0, #0
mcr p15, 0 , r0, c7, c5, 6 @ Invalidate BTB
mcr p15, 0 , r0, c7, c10, 4 @ Drain Write (& Fill) Buffer
ret lr
SYM_FUNC_END(xscale_coherent_user_range)
/*
* flush_kern_dcache_area ( void * addr , size_t size )
*
* Ensure no D cache aliasing occurs , either with itself or
* the I cache
*
* - addr - kernel address
* - size - region size
*/
SYM_TYPED_FUNC_START(xscale_flush_kern_dcache_area)
add r1, r0, r1
1 : mcr p15, 0 , r0, c7, c10, 1 @ clean D entry
mcr p15, 0 , r0, c7, c6, 1 @ invalidate D entry
add r0, r0, #CACHELINESIZE
cmp r0, r1
blo 1 b
mov r0, #0
mcr p15, 0 , r0, c7, c5, 0 @ Invalidate I cache & BTB
mcr p15, 0 , r0, c7, c10, 4 @ Drain Write (& Fill) Buffer
ret lr
SYM_FUNC_END(xscale_flush_kern_dcache_area)
/*
* dma_inv_range ( start , end )
*
* Invalidate ( discard ) the specified virtual address range .
* May not write back any entries . If ' start ' or ' end '
* are not cache line aligned , those lines must be written
* back .
*
* - start - virtual start address
* - end - virtual end address
*/
xscale_dma_inv_range:
tst r0, #CACHELINESIZE - 1
bic r0, r0, #CACHELINESIZE - 1
mcrne p15, 0 , r0, c7, c10, 1 @ clean D entry
tst r1, #CACHELINESIZE - 1
mcrne p15, 0 , r1, c7, c10, 1 @ clean D entry
1 : mcr p15, 0 , r0, c7, c6, 1 @ invalidate D entry
add r0, r0, #CACHELINESIZE
cmp r0, r1
blo 1 b
mcr p15, 0 , r0, c7, c10, 4 @ Drain Write (& Fill) Buffer
ret lr
/*
* dma_clean_range ( start , end )
*
* Clean the specified virtual address range .
*
* - start - virtual start address
* - end - virtual end address
*/
xscale_dma_clean_range:
bic r0, r0, #CACHELINESIZE - 1
1 : mcr p15, 0 , r0, c7, c10, 1 @ clean D entry
add r0, r0, #CACHELINESIZE
cmp r0, r1
blo 1 b
mcr p15, 0 , r0, c7, c10, 4 @ Drain Write (& Fill) Buffer
ret lr
/*
* dma_flush_range ( start , end )
*
* Clean and invalidate the specified virtual address range .
*
* - start - virtual start address
* - end - virtual end address
*/
SYM_TYPED_FUNC_START(xscale_dma_flush_range)
bic r0, r0, #CACHELINESIZE - 1
1 : mcr p15, 0 , r0, c7, c10, 1 @ clean D entry
mcr p15, 0 , r0, c7, c6, 1 @ invalidate D entry
add r0, r0, #CACHELINESIZE
cmp r0, r1
blo 1 b
mcr p15, 0 , r0, c7, c10, 4 @ Drain Write (& Fill) Buffer
ret lr
SYM_FUNC_END(xscale_dma_flush_range)
/*
* dma_map_area ( start , size , dir )
* - start - kernel virtual start address
* - size - size of region
* - dir - DMA direction
*/
SYM_TYPED_FUNC_START(xscale_dma_map_area)
add r1, r1, r0
cmp r2, #DMA_TO_DEVICE
beq xscale_dma_clean_range
bcs xscale_dma_inv_range
b xscale_dma_flush_range
SYM_FUNC_END(xscale_dma_map_area)
/*
* On stepping A0 / A1 of the 80200 , invalidating D - cache by line doesn ' t
* clear the dirty bits , which means that if we invalidate a dirty line ,
* the dirty data can still be written back to external memory later on .
*
* The recommended workaround is to always do a clean D - cache line before
* doing an invalidate D - cache line , so on the affected processors ,
* dma_inv_range ( ) is implemented as dma_flush_range ( ) .
*
* See erratum # 25 of " Intel 80200 Processor Specification Update " ,
* revision January 22 , 2003 , available at :
* http : / / www . intel . com / design / iio / specupdt / 273415 . htm
*/
/*
* dma_map_area ( start , size , dir )
* - start - kernel virtual start address
* - size - size of region
* - dir - DMA direction
*/
SYM_TYPED_FUNC_START(xscale_80200_A0_A1_dma_map_area)
add r1, r1, r0
teq r2, #DMA_TO_DEVICE
beq xscale_dma_clean_range
b xscale_dma_flush_range
SYM_FUNC_END(xscale_80200_A0_A1_dma_map_area)
/*
* dma_unmap_area ( start , size , dir )
* - start - kernel virtual start address
* - size - size of region
* - dir - DMA direction
*/
SYM_TYPED_FUNC_START(xscale_dma_unmap_area)
ret lr
SYM_FUNC_END(xscale_dma_unmap_area)
SYM_TYPED_FUNC_START(cpu_xscale_dcache_clean_area)
1 : mcr p15, 0 , r0, c7, c10, 1 @ clean D entry
add r0, r0, #CACHELINESIZE
subs r1, r1, #CACHELINESIZE
bhi 1 b
ret lr
SYM_FUNC_END(cpu_xscale_dcache_clean_area)
/* =============================== PageTable ============================== */
/*
* cpu_xscale_switch_mm ( pgd )
*
* Set the translation base pointer to be as described by pgd .
*
* pgd : new page tables
*/
.align 5
SYM_TYPED_FUNC_START(cpu_xscale_switch_mm)
clean_d_cache r1, r2
mcr p15, 0 , ip, c7, c5, 0 @ Invalidate I cache & BTB
mcr p15, 0 , ip, c7, c10, 4 @ Drain Write (& Fill) Buffer
mcr p15, 0 , r0, c2, c0, 0 @ load page table pointer
mcr p15, 0 , ip, c8, c7, 0 @ invalidate I & D TLBs
cpwait_ret lr, ip
SYM_FUNC_END(cpu_xscale_switch_mm)
/*
* cpu_xscale_set_pte_ext ( ptep , pte , ext )
*
* Set a PTE and flush it out
*
* Errata 40 : must set memory to write - through for user read - only pages .
*/
cpu_xscale_mt_table:
.long 0 x00 @ L_PTE_MT_UNCACHED
.long PTE_BUFFERABLE @ L_PTE_MT_BUFFERABLE
.long PTE_CACHEABLE @ L_PTE_MT_WRITETHROUGH
.long PTE_CACHEABLE | PTE_BUFFERABLE @ L_PTE_MT_WRITEBACK
.long PTE_EXT_TEX(1 ) | PTE_BUFFERABLE @ L_PTE_MT_DEV_SHARED
.long 0 x00 @ unused
.long PTE_EXT_TEX(1 ) | PTE_CACHEABLE @ L_PTE_MT_MINICACHE
.long PTE_EXT_TEX(1 ) | PTE_CACHEABLE | PTE_BUFFERABLE @ L_PTE_MT_WRITEALLOC
.long 0 x00 @ unused
.long PTE_BUFFERABLE @ L_PTE_MT_DEV_WC
.long 0 x00 @ unused
.long PTE_CACHEABLE | PTE_BUFFERABLE @ L_PTE_MT_DEV_CACHED
.long 0 x00 @ L_PTE_MT_DEV_NONSHARED
.long 0 x00 @ unused
.long 0 x00 @ unused
.long 0 x00 @ unused
.align 5
SYM_TYPED_FUNC_START(cpu_xscale_set_pte_ext)
xscale_set_pte_ext_prologue
@
@ Erratum 40 : must set memory to write-through for user read-only pages
@
and ip, r1, #(L_PTE_MT_MASK | L_PTE_USER | L_PTE_RDONLY) & ~(4 << 2 )
teq ip, #L_PTE_MT_WRITEBACK | L_PTE_USER | L_PTE_RDONLY
moveq r1, #L_PTE_MT_WRITETHROUGH
and r1, r1, #L_PTE_MT_MASK
adr ip, cpu_xscale_mt_table
ldr ip, [ip, r1]
bic r2, r2, #0 x0c
orr r2, r2, ip
xscale_set_pte_ext_epilogue
ret lr
SYM_FUNC_END(cpu_xscale_set_pte_ext)
.ltorg
.align
.globl cpu_xscale_suspend_size
.equ cpu_xscale_suspend_size, 4 * 6
#ifdef CONFIG_ARM_CPU_SUSPEND
SYM_TYPED_FUNC_START(cpu_xscale_do_suspend)
stmfd sp!, {r4 - r9, lr}
mrc p14, 0 , r4, c6, c0, 0 @ clock configuration, for turbo mode
mrc p15, 0 , r5, c15, c1, 0 @ CP access reg
mrc p15, 0 , r6, c13, c0, 0 @ PID
mrc p15, 0 , r7, c3, c0, 0 @ domain ID
mrc p15, 0 , r8, c1, c0, 1 @ auxiliary control reg
mrc p15, 0 , r9, c1, c0, 0 @ control reg
bic r4, r4, #2 @ clear frequency change bit
stmia r0, {r4 - r9} @ store cp regs
ldmfd sp!, {r4 - r9, pc}
SYM_FUNC_END(cpu_xscale_do_suspend)
SYM_TYPED_FUNC_START(cpu_xscale_do_resume)
ldmia r0, {r4 - r9} @ load cp regs
mov ip, #0
mcr p15, 0 , ip, c8, c7, 0 @ invalidate I & D TLBs
mcr p15, 0 , ip, c7, c7, 0 @ invalidate I & D caches, BTB
mcr p14, 0 , r4, c6, c0, 0 @ clock configuration, turbo mode.
mcr p15, 0 , r5, c15, c1, 0 @ CP access reg
mcr p15, 0 , r6, c13, c0, 0 @ PID
mcr p15, 0 , r7, c3, c0, 0 @ domain ID
mcr p15, 0 , r1, c2, c0, 0 @ translation table base addr
mcr p15, 0 , r8, c1, c0, 1 @ auxiliary control reg
mov r0, r9 @ control register
b cpu_resume_mmu
SYM_FUNC_END(cpu_xscale_do_resume)
#endif
.type __xscale_setup, #function
__xscale_setup:
mcr p15, 0 , ip, c7, c7, 0 @ invalidate I, D caches & BTB
mcr p15, 0 , ip, c7, c10, 4 @ Drain Write (& Fill) Buffer
mcr p15, 0 , ip, c8, c7, 0 @ invalidate I, D TLBs
mov r0, #1 << 6 @ cp6 for IOP3xx and Bulverde
orr r0, r0, #1 << 13 @ Its undefined whether this
mcr p15, 0 , r0, c15, c1, 0 @ affects USR or SVC modes
adr r5, xscale_crval
ldmia r5, {r5, r6}
mrc p15, 0 , r0, c1, c0, 0 @ get control register
bic r0, r0, r5
orr r0, r0, r6
ret lr
.size __xscale_setup, . - __xscale_setup
/*
* R
* . RVI ZFRS BLDP WCAM
* . . 11 1 . 01 . . . . . 101
*
*/
.type xscale_crval, #object
xscale_crval:
crval clear=0 x00003b07, mmuset=0 x00003905, ucset=0 x00001900
__INITDATA
@ define struct processor (see <asm/proc-fns.h> and proc-macros.S)
define_processor_functions xscale, dabort=v5t_early_abort, pabort=legacy_pabort, suspend=1
.section ".rodata"
string cpu_arch_name, "armv5te"
string cpu_elf_name, "v5"
string cpu_80200_A0_A1_name, "XScale-80200 A0/A1"
string cpu_80200_name, "XScale-80200"
string cpu_80219_name, "XScale-80219"
string cpu_8032x_name, "XScale-IOP8032x Family"
string cpu_8033x_name, "XScale-IOP8033x Family"
string cpu_pxa250_name, "XScale-PXA250"
string cpu_pxa210_name, "XScale-PXA210"
string cpu_ixp42x_name, "XScale-IXP42x Family"
string cpu_ixp43x_name, "XScale-IXP43x Family"
string cpu_ixp46x_name, "XScale-IXP46x Family"
string cpu_ixp2400_name, "XScale-IXP2400"
string cpu_ixp2800_name, "XScale-IXP2800"
string cpu_pxa255_name, "XScale-PXA255"
string cpu_pxa270_name, "XScale-PXA270"
.align
.section ".proc.info.init" , "a"
.macro xscale_proc_info name:req, cpu_val:req, cpu_mask:req, cpu_name:req, cache
.type __\name\()_proc_info,#object
__\name\()_proc_info:
.long \cpu_val
.long \cpu_mask
.long PMD_TYPE_SECT | \
PMD_SECT_BUFFERABLE | \
PMD_SECT_CACHEABLE | \
PMD_SECT_AP_WRITE | \
PMD_SECT_AP_READ
.long PMD_TYPE_SECT | \
PMD_SECT_AP_WRITE | \
PMD_SECT_AP_READ
initfn __xscale_setup, __\name\()_proc_info
.long cpu_arch_name
.long cpu_elf_name
.long HWCAP_SWP|HWCAP_HALF|HWCAP_THUMB|HWCAP_FAST_MULT|HWCAP_EDSP
.long \cpu_name
.long xscale_processor_functions
.long v4wbi_tlb_fns
.long xscale_mc_user_fns
.ifb \cache
.long xscale_cache_fns
.else
.long \cache
.endif
.size __\name\()_proc_info, . - __\name\()_proc_info
.endm
xscale_proc_info 80200 _A0_A1, 0 x69052000, 0 xfffffffe, cpu_80200_name, \
cache=xscale_80200_A0_A1_cache_fns
xscale_proc_info 80200 , 0 x69052000, 0 xfffffff0, cpu_80200_name
xscale_proc_info 80219 , 0 x69052e20, 0 xffffffe0, cpu_80219_name
xscale_proc_info 8032 x, 0 x69052420, 0 xfffff7e0, cpu_8032x_name
xscale_proc_info 8033 x, 0 x69054010, 0 xfffffd30, cpu_8033x_name
xscale_proc_info pxa250, 0 x69052100, 0 xfffff7f0, cpu_pxa250_name
xscale_proc_info pxa210, 0 x69052120, 0 xfffff3f0, cpu_pxa210_name
xscale_proc_info ixp2400, 0 x69054190, 0 xfffffff0, cpu_ixp2400_name
xscale_proc_info ixp2800, 0 x690541a0, 0 xfffffff0, cpu_ixp2800_name
xscale_proc_info ixp42x, 0 x690541c0, 0 xffffffc0, cpu_ixp42x_name
xscale_proc_info ixp43x, 0 x69054040, 0 xfffffff0, cpu_ixp43x_name
xscale_proc_info ixp46x, 0 x69054200, 0 xffffff00, cpu_ixp46x_name
xscale_proc_info pxa255, 0 x69052d00, 0 xfffffff0, cpu_pxa255_name
xscale_proc_info pxa270, 0 x69054110, 0 xfffffff0, cpu_pxa270_name
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