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kernel-fxtec-pro1x/arch/frv/kernel/head-uc-fr555.S
Tim Abbott df1f6d200c FRV: Use __INIT macro instead of .text.init. 
FRV is placing some code in the .text.init section but does not reference that
section in its linker scripts.

This change moves this code from the .text.init section to the .init.text
section, which is presumably where it belongs.

Signed-off-by: Tim Abbott <tabbott@mit.edu>
Signed-off-by: David Howells <dhowells@redhat.com>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-04-27 19:46:30 -07:00

347 lines
9.1 KiB
ArmAsm
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/* head-uc-fr555.S: FR555 uc-linux specific bits of initialisation
*
* Copyright (C) 2004 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.com)
*
* 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/init.h>
#include <linux/threads.h>
#include <linux/linkage.h>
#include <asm/ptrace.h>
#include <asm/page.h>
#include <asm/spr-regs.h>
#include <asm/mb86943a.h>
#include "head.inc"
#define __551_DARS0 0xfeff0100
#define __551_DARS1 0xfeff0104
#define __551_DARS2 0xfeff0108
#define __551_DARS3 0xfeff010c
#define __551_DAMK0 0xfeff0110
#define __551_DAMK1 0xfeff0114
#define __551_DAMK2 0xfeff0118
#define __551_DAMK3 0xfeff011c
#define __551_LCR 0xfeff1100
#define __551_LSBR 0xfeff1c00
__INIT
.balign 4
###############################################################################
#
# describe the position and layout of the SDRAM controller registers
#
# ENTRY: EXIT:
# GR5 - cacheline size
# GR11 - displacement of 2nd SDRAM addr reg from GR14
# GR12 - displacement of 3rd SDRAM addr reg from GR14
# GR13 - displacement of 4th SDRAM addr reg from GR14
# GR14 - address of 1st SDRAM addr reg
# GR15 - amount to shift address by to match SDRAM addr reg
# GR26 &__head_reference [saved]
# GR30 LED address [saved]
# CC0 - T if DARS0 is present
# CC1 - T if DARS1 is present
# CC2 - T if DARS2 is present
# CC3 - T if DARS3 is present
#
###############################################################################
.globl __head_fr555_describe_sdram
__head_fr555_describe_sdram:
sethi.p %hi(__551_DARS0),gr14
setlo %lo(__551_DARS0),gr14
setlos.p #__551_DARS1-__551_DARS0,gr11
setlos #__551_DARS2-__551_DARS0,gr12
setlos.p #__551_DARS3-__551_DARS0,gr13
setlos #64,gr5 ; cacheline size
setlos #20,gr15 ; amount to shift addr by
setlos #0x00ff,gr4
movgs gr4,cccr ; extant DARS/DAMK regs
bralr
###############################################################################
#
# rearrange the bus controller registers
#
# ENTRY: EXIT:
# GR26 &__head_reference [saved]
# GR30 LED address revised LED address
#
###############################################################################
.globl __head_fr555_set_busctl
__head_fr555_set_busctl:
LEDS 0x100f
sethi.p %hi(__551_LSBR),gr10
setlo %lo(__551_LSBR),gr10
sethi.p %hi(__551_LCR),gr11
setlo %lo(__551_LCR),gr11
# set the bus controller
sethi.p %hi(__region_CS1),gr4
setlo %lo(__region_CS1),gr4
sethi.p %hi(__region_CS1_M),gr5
setlo %lo(__region_CS1_M),gr5
sethi.p %hi(__region_CS1_C),gr6
setlo %lo(__region_CS1_C),gr6
sti gr4,@(gr10,#1*0x08)
sti gr5,@(gr10,#1*0x08+0x100)
sti gr6,@(gr11,#1*0x08)
sethi.p %hi(__region_CS2),gr4
setlo %lo(__region_CS2),gr4
sethi.p %hi(__region_CS2_M),gr5
setlo %lo(__region_CS2_M),gr5
sethi.p %hi(__region_CS2_C),gr6
setlo %lo(__region_CS2_C),gr6
sti gr4,@(gr10,#2*0x08)
sti gr5,@(gr10,#2*0x08+0x100)
sti gr6,@(gr11,#2*0x08)
sethi.p %hi(__region_CS3),gr4
setlo %lo(__region_CS3),gr4
sethi.p %hi(__region_CS3_M),gr5
setlo %lo(__region_CS3_M),gr5
sethi.p %hi(__region_CS3_C),gr6
setlo %lo(__region_CS3_C),gr6
sti gr4,@(gr10,#3*0x08)
sti gr5,@(gr10,#3*0x08+0x100)
sti gr6,@(gr11,#3*0x08)
sethi.p %hi(__region_CS4),gr4
setlo %lo(__region_CS4),gr4
sethi.p %hi(__region_CS4_M),gr5
setlo %lo(__region_CS4_M),gr5
sethi.p %hi(__region_CS4_C),gr6
setlo %lo(__region_CS4_C),gr6
sti gr4,@(gr10,#4*0x08)
sti gr5,@(gr10,#4*0x08+0x100)
sti gr6,@(gr11,#4*0x08)
sethi.p %hi(__region_CS5),gr4
setlo %lo(__region_CS5),gr4
sethi.p %hi(__region_CS5_M),gr5
setlo %lo(__region_CS5_M),gr5
sethi.p %hi(__region_CS5_C),gr6
setlo %lo(__region_CS5_C),gr6
sti gr4,@(gr10,#5*0x08)
sti gr5,@(gr10,#5*0x08+0x100)
sti gr6,@(gr11,#5*0x08)
sethi.p %hi(__region_CS6),gr4
setlo %lo(__region_CS6),gr4
sethi.p %hi(__region_CS6_M),gr5
setlo %lo(__region_CS6_M),gr5
sethi.p %hi(__region_CS6_C),gr6
setlo %lo(__region_CS6_C),gr6
sti gr4,@(gr10,#6*0x08)
sti gr5,@(gr10,#6*0x08+0x100)
sti gr6,@(gr11,#6*0x08)
sethi.p %hi(__region_CS7),gr4
setlo %lo(__region_CS7),gr4
sethi.p %hi(__region_CS7_M),gr5
setlo %lo(__region_CS7_M),gr5
sethi.p %hi(__region_CS7_C),gr6
setlo %lo(__region_CS7_C),gr6
sti gr4,@(gr10,#7*0x08)
sti gr5,@(gr10,#7*0x08+0x100)
sti gr6,@(gr11,#7*0x08)
membar
bar
# adjust LED bank address
#ifdef CONFIG_MB93091_VDK
sethi.p %hi(LED_ADDR - 0x20000000 +__region_CS2),gr30
setlo %lo(LED_ADDR - 0x20000000 +__region_CS2),gr30
#endif
bralr
###############################################################################
#
# determine the total SDRAM size
#
# ENTRY: EXIT:
# GR25 - SDRAM size
# GR26 &__head_reference [saved]
# GR30 LED address [saved]
#
###############################################################################
.globl __head_fr555_survey_sdram
__head_fr555_survey_sdram:
sethi.p %hi(__551_DAMK0),gr11
setlo %lo(__551_DAMK0),gr11
sethi.p %hi(__551_DARS0),gr12
setlo %lo(__551_DARS0),gr12
sethi.p %hi(0xfff),gr17 ; unused SDRAM AMK value
setlo %lo(0xfff),gr17
setlos #0,gr25
ldi @(gr11,#0x00),gr6 ; DAMK0: bits 11:0 match addr 11:0
subcc gr6,gr17,gr0,icc0
beq icc0,#0,__head_no_DCS0
ldi @(gr12,#0x00),gr4 ; DARS0
add gr25,gr6,gr25
addi gr25,#1,gr25
__head_no_DCS0:
ldi @(gr11,#0x04),gr6 ; DAMK1: bits 11:0 match addr 11:0
subcc gr6,gr17,gr0,icc0
beq icc0,#0,__head_no_DCS1
ldi @(gr12,#0x04),gr4 ; DARS1
add gr25,gr6,gr25
addi gr25,#1,gr25
__head_no_DCS1:
ldi @(gr11,#0x8),gr6 ; DAMK2: bits 11:0 match addr 11:0
subcc gr6,gr17,gr0,icc0
beq icc0,#0,__head_no_DCS2
ldi @(gr12,#0x8),gr4 ; DARS2
add gr25,gr6,gr25
addi gr25,#1,gr25
__head_no_DCS2:
ldi @(gr11,#0xc),gr6 ; DAMK3: bits 11:0 match addr 11:0
subcc gr6,gr17,gr0,icc0
beq icc0,#0,__head_no_DCS3
ldi @(gr12,#0xc),gr4 ; DARS3
add gr25,gr6,gr25
addi gr25,#1,gr25
__head_no_DCS3:
slli gr25,#20,gr25 ; shift [11:0] -> [31:20]
bralr
###############################################################################
#
# set the protection map with the I/DAMPR registers
#
# ENTRY: EXIT:
# GR25 SDRAM size saved
# GR30 LED address saved
#
###############################################################################
.globl __head_fr555_set_protection
__head_fr555_set_protection:
movsg lr,gr27
sethi.p %hi(0xfff00000),gr11
setlo %lo(0xfff00000),gr11
# set the I/O region protection registers for FR555
sethi.p %hi(__region_IO),gr7
setlo %lo(__region_IO),gr7
ori gr7,#xAMPRx_SS_512Mb|xAMPRx_S_KERNEL|xAMPRx_C|xAMPRx_V,gr5
movgs gr0,iampr15
movgs gr0,iamlr15
movgs gr5,dampr15
movgs gr7,damlr15
# need to tile the remaining IAMPR/DAMPR registers to cover as much of the RAM as possible
# - start with the highest numbered registers
sethi.p %hi(__kernel_image_end),gr8
setlo %lo(__kernel_image_end),gr8
sethi.p %hi(32768),gr4 ; allow for a maximal allocator bitmap
setlo %lo(32768),gr4
add gr8,gr4,gr8
sethi.p %hi(1024*2048-1),gr4 ; round up to nearest 2MiB
setlo %lo(1024*2048-1),gr4
add.p gr8,gr4,gr8
not gr4,gr4
and gr8,gr4,gr8
sethi.p %hi(__page_offset),gr9
setlo %lo(__page_offset),gr9
add gr9,gr25,gr9
# GR8 = base of uncovered RAM
# GR9 = top of uncovered RAM
# GR11 - mask for DAMLR/IAMLR regs
#
call __head_split_region
movgs gr4,iampr14
movgs gr6,iamlr14
movgs gr5,dampr14
movgs gr7,damlr14
call __head_split_region
movgs gr4,iampr13
movgs gr6,iamlr13
movgs gr5,dampr13
movgs gr7,damlr13
call __head_split_region
movgs gr4,iampr12
movgs gr6,iamlr12
movgs gr5,dampr12
movgs gr7,damlr12
call __head_split_region
movgs gr4,iampr11
movgs gr6,iamlr11
movgs gr5,dampr11
movgs gr7,damlr11
call __head_split_region
movgs gr4,iampr10
movgs gr6,iamlr10
movgs gr5,dampr10
movgs gr7,damlr10
call __head_split_region
movgs gr4,iampr9
movgs gr6,iamlr9
movgs gr5,dampr9
movgs gr7,damlr9
call __head_split_region
movgs gr4,iampr8
movgs gr6,iamlr8
movgs gr5,dampr8
movgs gr7,damlr8
call __head_split_region
movgs gr4,iampr7
movgs gr6,iamlr7
movgs gr5,dampr7
movgs gr7,damlr7
call __head_split_region
movgs gr4,iampr6
movgs gr6,iamlr6
movgs gr5,dampr6
movgs gr7,damlr6
call __head_split_region
movgs gr4,iampr5
movgs gr6,iamlr5
movgs gr5,dampr5
movgs gr7,damlr5
call __head_split_region
movgs gr4,iampr4
movgs gr6,iamlr4
movgs gr5,dampr4
movgs gr7,damlr4
call __head_split_region
movgs gr4,iampr3
movgs gr6,iamlr3
movgs gr5,dampr3
movgs gr7,damlr3
call __head_split_region
movgs gr4,iampr2
movgs gr6,iamlr2
movgs gr5,dampr2
movgs gr7,damlr2
call __head_split_region
movgs gr4,iampr1
movgs gr6,iamlr1
movgs gr5,dampr1
movgs gr7,damlr1
# cover kernel core image with kernel-only segment
sethi.p %hi(__page_offset),gr8
setlo %lo(__page_offset),gr8
call __head_split_region
#ifdef CONFIG_PROTECT_KERNEL
ori.p gr4,#xAMPRx_S_KERNEL,gr4
ori gr5,#xAMPRx_S_KERNEL,gr5
#endif
movgs gr4,iampr0
movgs gr6,iamlr0
movgs gr5,dampr0
movgs gr7,damlr0
jmpl @(gr27,gr0)
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