mirror of https://gitee.com/openkylin/linux.git
347 lines
9.1 KiB
ArmAsm
347 lines
9.1 KiB
ArmAsm
|
/* 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/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
|
||
|
|
|
||
|
|
.section .text.init,"ax"
|
||
|
|
.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)
|