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alistair23-linux/arch/sparc/kernel/trampoline_64.S
Mike Rapoport 65fddcfca8 mm: reorder includes after introduction of linux/pgtable.h 
The replacement of <asm/pgrable.h> with <linux/pgtable.h> made the include
of the latter in the middle of asm includes.  Fix this up with the aid of
the below script and manual adjustments here and there.

	import sys
	import re

	if len(sys.argv) is not 3:
	    print "USAGE: %s <file> <header>" % (sys.argv[0])
	    sys.exit(1)

	hdr_to_move="#include <linux/%s>" % sys.argv[2]
	moved = False
	in_hdrs = False

	with open(sys.argv[1], "r") as f:
	    lines = f.readlines()
	    for _line in lines:
		line = _line.rstrip('
')
		if line == hdr_to_move:
		    continue
		if line.startswith("#include <linux/"):
		    in_hdrs = True
		elif not moved and in_hdrs:
		    moved = True
		    print hdr_to_move
		print line

Signed-off-by: Mike Rapoport <rppt@linux.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Cain <bcain@codeaurora.org>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Chris Zankel <chris@zankel.net>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Greentime Hu <green.hu@gmail.com>
Cc: Greg Ungerer <gerg@linux-m68k.org>
Cc: Guan Xuetao <gxt@pku.edu.cn>
Cc: Guo Ren <guoren@kernel.org>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Helge Deller <deller@gmx.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Ley Foon Tan <ley.foon.tan@intel.com>
Cc: Mark Salter <msalter@redhat.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Matt Turner <mattst88@gmail.com>
Cc: Max Filippov <jcmvbkbc@gmail.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Michal Simek <monstr@monstr.eu>
Cc: Nick Hu <nickhu@andestech.com>
Cc: Paul Walmsley <paul.walmsley@sifive.com>
Cc: Richard Weinberger <richard@nod.at>
Cc: Rich Felker <dalias@libc.org>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Stafford Horne <shorne@gmail.com>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Vincent Chen <deanbo422@gmail.com>
Cc: Vineet Gupta <vgupta@synopsys.com>
Cc: Will Deacon <will@kernel.org>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Link: http://lkml.kernel.org/r/20200514170327.31389-4-rppt@kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-06-09 09:39:13 -07:00

415 lines
9.1 KiB
ArmAsm
Raw Blame History

/* SPDX-License-Identifier: GPL-2.0 */
/*
* trampoline.S: Jump start slave processors on sparc64.
*
* Copyright (C) 1997 David S. Miller (davem@caip.rutgers.edu)
*/
#include <linux/pgtable.h>
#include <asm/head.h>
#include <asm/asi.h>
#include <asm/lsu.h>
#include <asm/dcr.h>
#include <asm/dcu.h>
#include <asm/pstate.h>
#include <asm/page.h>
#include <asm/spitfire.h>
#include <asm/processor.h>
#include <asm/thread_info.h>
#include <asm/mmu.h>
#include <asm/hypervisor.h>
#include <asm/cpudata.h>
.data
.align 8
call_method:
.asciz "call-method"
.align 8
itlb_load:
.asciz "SUNW,itlb-load"
.align 8
dtlb_load:
.asciz "SUNW,dtlb-load"
#define TRAMP_STACK_SIZE 1024
.align 16
tramp_stack:
.skip TRAMP_STACK_SIZE
.align 8
.globl sparc64_cpu_startup, sparc64_cpu_startup_end
sparc64_cpu_startup:
BRANCH_IF_SUN4V(g1, niagara_startup)
BRANCH_IF_CHEETAH_BASE(g1, g5, cheetah_startup)
BRANCH_IF_CHEETAH_PLUS_OR_FOLLOWON(g1, g5, cheetah_plus_startup)
ba,pt %xcc, spitfire_startup
nop
cheetah_plus_startup:
/* Preserve OBP chosen DCU and DCR register settings. */
ba,pt %xcc, cheetah_generic_startup
nop
cheetah_startup:
mov DCR_BPE | DCR_RPE | DCR_SI | DCR_IFPOE | DCR_MS, %g1
wr %g1, %asr18
sethi %uhi(DCU_ME|DCU_RE|DCU_HPE|DCU_SPE|DCU_SL|DCU_WE), %g5
or %g5, %ulo(DCU_ME|DCU_RE|DCU_HPE|DCU_SPE|DCU_SL|DCU_WE), %g5
sllx %g5, 32, %g5
or %g5, DCU_DM | DCU_IM | DCU_DC | DCU_IC, %g5
stxa %g5, [%g0] ASI_DCU_CONTROL_REG
membar #Sync
/* fallthru */
cheetah_generic_startup:
mov TSB_EXTENSION_P, %g3
stxa %g0, [%g3] ASI_DMMU
stxa %g0, [%g3] ASI_IMMU
membar #Sync
mov TSB_EXTENSION_S, %g3
stxa %g0, [%g3] ASI_DMMU
membar #Sync
mov TSB_EXTENSION_N, %g3
stxa %g0, [%g3] ASI_DMMU
stxa %g0, [%g3] ASI_IMMU
membar #Sync
/* fallthru */
niagara_startup:
/* Disable STICK_INT interrupts. */
sethi %hi(0x80000000), %g5
sllx %g5, 32, %g5
wr %g5, %asr25
ba,pt %xcc, startup_continue
nop
spitfire_startup:
mov (LSU_CONTROL_IC | LSU_CONTROL_DC | LSU_CONTROL_IM | LSU_CONTROL_DM), %g1
stxa %g1, [%g0] ASI_LSU_CONTROL
membar #Sync
startup_continue:
mov %o0, %l0
BRANCH_IF_SUN4V(g1, niagara_lock_tlb)
sethi %hi(0x80000000), %g2
sllx %g2, 32, %g2
wr %g2, 0, %tick_cmpr
/* Call OBP by hand to lock KERNBASE into i/d tlbs.
* We lock 'num_kernel_image_mappings' consequetive entries.
*/
sethi %hi(prom_entry_lock), %g2
1: ldstub [%g2 + %lo(prom_entry_lock)], %g1
brnz,pn %g1, 1b
nop
/* Get onto temporary stack which will be in the locked
* kernel image.
*/
sethi %hi(tramp_stack), %g1
or %g1, %lo(tramp_stack), %g1
add %g1, TRAMP_STACK_SIZE, %g1
sub %g1, STACKFRAME_SZ + STACK_BIAS + 256, %sp
flushw
/* Setup the loop variables:
* %l3: VADDR base
* %l4: TTE base
* %l5: Loop iterator, iterates from 0 to 'num_kernel_image_mappings'
* %l6: Number of TTE entries to map
* %l7: Highest TTE entry number, we count down
*/
sethi %hi(KERNBASE), %l3
sethi %hi(kern_locked_tte_data), %l4
ldx [%l4 + %lo(kern_locked_tte_data)], %l4
clr %l5
sethi %hi(num_kernel_image_mappings), %l6
lduw [%l6 + %lo(num_kernel_image_mappings)], %l6
mov 15, %l7
BRANCH_IF_ANY_CHEETAH(g1,g5,2f)
mov 63, %l7
2:
3:
/* Lock into I-MMU */
sethi %hi(call_method), %g2
or %g2, %lo(call_method), %g2
stx %g2, [%sp + 2047 + 128 + 0x00]
mov 5, %g2
stx %g2, [%sp + 2047 + 128 + 0x08]
mov 1, %g2
stx %g2, [%sp + 2047 + 128 + 0x10]
sethi %hi(itlb_load), %g2
or %g2, %lo(itlb_load), %g2
stx %g2, [%sp + 2047 + 128 + 0x18]
sethi %hi(prom_mmu_ihandle_cache), %g2
lduw [%g2 + %lo(prom_mmu_ihandle_cache)], %g2
stx %g2, [%sp + 2047 + 128 + 0x20]
/* Each TTE maps 4MB, convert index to offset. */
sllx %l5, 22, %g1
add %l3, %g1, %g2
stx %g2, [%sp + 2047 + 128 + 0x28] ! VADDR
add %l4, %g1, %g2
stx %g2, [%sp + 2047 + 128 + 0x30] ! TTE
/* TTE index is highest minus loop index. */
sub %l7, %l5, %g2
stx %g2, [%sp + 2047 + 128 + 0x38]
sethi %hi(p1275buf), %g2
or %g2, %lo(p1275buf), %g2
ldx [%g2 + 0x08], %o1
call %o1
add %sp, (2047 + 128), %o0
/* Lock into D-MMU */
sethi %hi(call_method), %g2
or %g2, %lo(call_method), %g2
stx %g2, [%sp + 2047 + 128 + 0x00]
mov 5, %g2
stx %g2, [%sp + 2047 + 128 + 0x08]
mov 1, %g2
stx %g2, [%sp + 2047 + 128 + 0x10]
sethi %hi(dtlb_load), %g2
or %g2, %lo(dtlb_load), %g2
stx %g2, [%sp + 2047 + 128 + 0x18]
sethi %hi(prom_mmu_ihandle_cache), %g2
lduw [%g2 + %lo(prom_mmu_ihandle_cache)], %g2
stx %g2, [%sp + 2047 + 128 + 0x20]
/* Each TTE maps 4MB, convert index to offset. */
sllx %l5, 22, %g1
add %l3, %g1, %g2
stx %g2, [%sp + 2047 + 128 + 0x28] ! VADDR
add %l4, %g1, %g2
stx %g2, [%sp + 2047 + 128 + 0x30] ! TTE
/* TTE index is highest minus loop index. */
sub %l7, %l5, %g2
stx %g2, [%sp + 2047 + 128 + 0x38]
sethi %hi(p1275buf), %g2
or %g2, %lo(p1275buf), %g2
ldx [%g2 + 0x08], %o1
call %o1
add %sp, (2047 + 128), %o0
add %l5, 1, %l5
cmp %l5, %l6
bne,pt %xcc, 3b
nop
sethi %hi(prom_entry_lock), %g2
stb %g0, [%g2 + %lo(prom_entry_lock)]
ba,pt %xcc, after_lock_tlb
nop
niagara_lock_tlb:
sethi %hi(KERNBASE), %l3
sethi %hi(kern_locked_tte_data), %l4
ldx [%l4 + %lo(kern_locked_tte_data)], %l4
clr %l5
sethi %hi(num_kernel_image_mappings), %l6
lduw [%l6 + %lo(num_kernel_image_mappings)], %l6
1:
mov HV_FAST_MMU_MAP_PERM_ADDR, %o5
sllx %l5, 22, %g2
add %l3, %g2, %o0
clr %o1
add %l4, %g2, %o2
mov HV_MMU_IMMU, %o3
ta HV_FAST_TRAP
mov HV_FAST_MMU_MAP_PERM_ADDR, %o5
sllx %l5, 22, %g2
add %l3, %g2, %o0
clr %o1
add %l4, %g2, %o2
mov HV_MMU_DMMU, %o3
ta HV_FAST_TRAP
add %l5, 1, %l5
cmp %l5, %l6
bne,pt %xcc, 1b
nop
after_lock_tlb:
wrpr %g0, (PSTATE_PRIV | PSTATE_PEF), %pstate
wr %g0, 0, %fprs
wr %g0, ASI_P, %asi
mov PRIMARY_CONTEXT, %g7
661: stxa %g0, [%g7] ASI_DMMU
.section .sun4v_1insn_patch, "ax"
.word 661b
stxa %g0, [%g7] ASI_MMU
.previous
membar #Sync
mov SECONDARY_CONTEXT, %g7
661: stxa %g0, [%g7] ASI_DMMU
.section .sun4v_1insn_patch, "ax"
.word 661b
stxa %g0, [%g7] ASI_MMU
.previous
membar #Sync
/* Everything we do here, until we properly take over the
* trap table, must be done with extreme care. We cannot
* make any references to %g6 (current thread pointer),
* %g4 (current task pointer), or %g5 (base of current cpu's
* per-cpu area) until we properly take over the trap table
* from the firmware and hypervisor.
*
* Get onto temporary stack which is in the locked kernel image.
*/
sethi %hi(tramp_stack), %g1
or %g1, %lo(tramp_stack), %g1
add %g1, TRAMP_STACK_SIZE, %g1
sub %g1, STACKFRAME_SZ + STACK_BIAS + 256, %sp
mov 0, %fp
/* Put garbage in these registers to trap any access to them. */
set 0xdeadbeef, %g4
set 0xdeadbeef, %g5
set 0xdeadbeef, %g6
call init_irqwork_curcpu
nop
sethi %hi(tlb_type), %g3
lduw [%g3 + %lo(tlb_type)], %g2
cmp %g2, 3
bne,pt %icc, 1f
nop
call hard_smp_processor_id
nop
call sun4v_register_mondo_queues
nop
1: call init_cur_cpu_trap
ldx [%l0], %o0
/* Start using proper page size encodings in ctx register. */
sethi %hi(sparc64_kern_pri_context), %g3
ldx [%g3 + %lo(sparc64_kern_pri_context)], %g2
mov PRIMARY_CONTEXT, %g1
661: stxa %g2, [%g1] ASI_DMMU
.section .sun4v_1insn_patch, "ax"
.word 661b
stxa %g2, [%g1] ASI_MMU
.previous
membar #Sync
wrpr %g0, 0, %wstate
sethi %hi(prom_entry_lock), %g2
1: ldstub [%g2 + %lo(prom_entry_lock)], %g1
brnz,pn %g1, 1b
nop
/* As a hack, put &init_thread_union into %g6.
* prom_world() loads from here to restore the %asi
* register.
*/
sethi %hi(init_thread_union), %g6
or %g6, %lo(init_thread_union), %g6
sethi %hi(is_sun4v), %o0
lduw [%o0 + %lo(is_sun4v)], %o0
brz,pt %o0, 2f
nop
TRAP_LOAD_TRAP_BLOCK(%g2, %g3)
add %g2, TRAP_PER_CPU_FAULT_INFO, %g2
stxa %g2, [%g0] ASI_SCRATCHPAD
/* Compute physical address:
*
* paddr = kern_base + (mmfsa_vaddr - KERNBASE)
*/
sethi %hi(KERNBASE), %g3
sub %g2, %g3, %g2
sethi %hi(kern_base), %g3
ldx [%g3 + %lo(kern_base)], %g3
add %g2, %g3, %o1
sethi %hi(sparc64_ttable_tl0), %o0
set prom_set_trap_table_name, %g2
stx %g2, [%sp + 2047 + 128 + 0x00]
mov 2, %g2
stx %g2, [%sp + 2047 + 128 + 0x08]
mov 0, %g2
stx %g2, [%sp + 2047 + 128 + 0x10]
stx %o0, [%sp + 2047 + 128 + 0x18]
stx %o1, [%sp + 2047 + 128 + 0x20]
sethi %hi(p1275buf), %g2
or %g2, %lo(p1275buf), %g2
ldx [%g2 + 0x08], %o1
call %o1
add %sp, (2047 + 128), %o0
ba,pt %xcc, 3f
nop
2: sethi %hi(sparc64_ttable_tl0), %o0
set prom_set_trap_table_name, %g2
stx %g2, [%sp + 2047 + 128 + 0x00]
mov 1, %g2
stx %g2, [%sp + 2047 + 128 + 0x08]
mov 0, %g2
stx %g2, [%sp + 2047 + 128 + 0x10]
stx %o0, [%sp + 2047 + 128 + 0x18]
sethi %hi(p1275buf), %g2
or %g2, %lo(p1275buf), %g2
ldx [%g2 + 0x08], %o1
call %o1
add %sp, (2047 + 128), %o0
3: sethi %hi(prom_entry_lock), %g2
stb %g0, [%g2 + %lo(prom_entry_lock)]
ldx [%l0], %g6
ldx [%g6 + TI_TASK], %g4
mov 1, %g5
sllx %g5, THREAD_SHIFT, %g5
sub %g5, (STACKFRAME_SZ + STACK_BIAS), %g5
add %g6, %g5, %sp
rdpr %pstate, %o1
or %o1, PSTATE_IE, %o1
wrpr %o1, 0, %pstate
call smp_callin
nop
call cpu_panic
nop
1: b,a,pt %xcc, 1b
.align 8
sparc64_cpu_startup_end:
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