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df1f6d200c
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>
347 lines
9.1 KiB
ArmAsm
347 lines
9.1 KiB
ArmAsm
/* head-uc-fr555.S: FR555 uc-linux specific bits of initialisation
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*
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* Copyright (C) 2004 Red Hat, Inc. All Rights Reserved.
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* Written by David Howells (dhowells@redhat.com)
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*/
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#include <linux/init.h>
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#include <linux/threads.h>
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#include <linux/linkage.h>
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#include <asm/ptrace.h>
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#include <asm/page.h>
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#include <asm/spr-regs.h>
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#include <asm/mb86943a.h>
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#include "head.inc"
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#define __551_DARS0 0xfeff0100
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#define __551_DARS1 0xfeff0104
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#define __551_DARS2 0xfeff0108
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#define __551_DARS3 0xfeff010c
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#define __551_DAMK0 0xfeff0110
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#define __551_DAMK1 0xfeff0114
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#define __551_DAMK2 0xfeff0118
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#define __551_DAMK3 0xfeff011c
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#define __551_LCR 0xfeff1100
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#define __551_LSBR 0xfeff1c00
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__INIT
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.balign 4
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###############################################################################
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#
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# describe the position and layout of the SDRAM controller registers
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#
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# ENTRY: EXIT:
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# GR5 - cacheline size
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# GR11 - displacement of 2nd SDRAM addr reg from GR14
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# GR12 - displacement of 3rd SDRAM addr reg from GR14
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# GR13 - displacement of 4th SDRAM addr reg from GR14
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# GR14 - address of 1st SDRAM addr reg
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# GR15 - amount to shift address by to match SDRAM addr reg
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# GR26 &__head_reference [saved]
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# GR30 LED address [saved]
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# CC0 - T if DARS0 is present
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# CC1 - T if DARS1 is present
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# CC2 - T if DARS2 is present
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# CC3 - T if DARS3 is present
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#
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###############################################################################
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.globl __head_fr555_describe_sdram
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__head_fr555_describe_sdram:
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sethi.p %hi(__551_DARS0),gr14
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setlo %lo(__551_DARS0),gr14
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setlos.p #__551_DARS1-__551_DARS0,gr11
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setlos #__551_DARS2-__551_DARS0,gr12
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setlos.p #__551_DARS3-__551_DARS0,gr13
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setlos #64,gr5 ; cacheline size
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setlos #20,gr15 ; amount to shift addr by
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setlos #0x00ff,gr4
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movgs gr4,cccr ; extant DARS/DAMK regs
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bralr
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###############################################################################
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#
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# rearrange the bus controller registers
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#
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# ENTRY: EXIT:
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# GR26 &__head_reference [saved]
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# GR30 LED address revised LED address
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#
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###############################################################################
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.globl __head_fr555_set_busctl
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__head_fr555_set_busctl:
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LEDS 0x100f
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sethi.p %hi(__551_LSBR),gr10
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setlo %lo(__551_LSBR),gr10
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sethi.p %hi(__551_LCR),gr11
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setlo %lo(__551_LCR),gr11
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# set the bus controller
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sethi.p %hi(__region_CS1),gr4
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setlo %lo(__region_CS1),gr4
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sethi.p %hi(__region_CS1_M),gr5
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setlo %lo(__region_CS1_M),gr5
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sethi.p %hi(__region_CS1_C),gr6
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setlo %lo(__region_CS1_C),gr6
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sti gr4,@(gr10,#1*0x08)
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sti gr5,@(gr10,#1*0x08+0x100)
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sti gr6,@(gr11,#1*0x08)
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sethi.p %hi(__region_CS2),gr4
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setlo %lo(__region_CS2),gr4
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sethi.p %hi(__region_CS2_M),gr5
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setlo %lo(__region_CS2_M),gr5
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sethi.p %hi(__region_CS2_C),gr6
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setlo %lo(__region_CS2_C),gr6
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sti gr4,@(gr10,#2*0x08)
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sti gr5,@(gr10,#2*0x08+0x100)
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sti gr6,@(gr11,#2*0x08)
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sethi.p %hi(__region_CS3),gr4
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setlo %lo(__region_CS3),gr4
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sethi.p %hi(__region_CS3_M),gr5
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setlo %lo(__region_CS3_M),gr5
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sethi.p %hi(__region_CS3_C),gr6
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setlo %lo(__region_CS3_C),gr6
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sti gr4,@(gr10,#3*0x08)
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sti gr5,@(gr10,#3*0x08+0x100)
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sti gr6,@(gr11,#3*0x08)
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sethi.p %hi(__region_CS4),gr4
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setlo %lo(__region_CS4),gr4
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sethi.p %hi(__region_CS4_M),gr5
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setlo %lo(__region_CS4_M),gr5
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sethi.p %hi(__region_CS4_C),gr6
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setlo %lo(__region_CS4_C),gr6
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sti gr4,@(gr10,#4*0x08)
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sti gr5,@(gr10,#4*0x08+0x100)
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sti gr6,@(gr11,#4*0x08)
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sethi.p %hi(__region_CS5),gr4
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setlo %lo(__region_CS5),gr4
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sethi.p %hi(__region_CS5_M),gr5
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setlo %lo(__region_CS5_M),gr5
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sethi.p %hi(__region_CS5_C),gr6
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setlo %lo(__region_CS5_C),gr6
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sti gr4,@(gr10,#5*0x08)
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sti gr5,@(gr10,#5*0x08+0x100)
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sti gr6,@(gr11,#5*0x08)
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sethi.p %hi(__region_CS6),gr4
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setlo %lo(__region_CS6),gr4
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sethi.p %hi(__region_CS6_M),gr5
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setlo %lo(__region_CS6_M),gr5
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sethi.p %hi(__region_CS6_C),gr6
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setlo %lo(__region_CS6_C),gr6
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sti gr4,@(gr10,#6*0x08)
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sti gr5,@(gr10,#6*0x08+0x100)
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sti gr6,@(gr11,#6*0x08)
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sethi.p %hi(__region_CS7),gr4
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setlo %lo(__region_CS7),gr4
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sethi.p %hi(__region_CS7_M),gr5
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setlo %lo(__region_CS7_M),gr5
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sethi.p %hi(__region_CS7_C),gr6
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setlo %lo(__region_CS7_C),gr6
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sti gr4,@(gr10,#7*0x08)
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sti gr5,@(gr10,#7*0x08+0x100)
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sti gr6,@(gr11,#7*0x08)
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membar
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bar
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# adjust LED bank address
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#ifdef CONFIG_MB93091_VDK
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sethi.p %hi(LED_ADDR - 0x20000000 +__region_CS2),gr30
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setlo %lo(LED_ADDR - 0x20000000 +__region_CS2),gr30
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#endif
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bralr
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###############################################################################
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#
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# determine the total SDRAM size
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#
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# ENTRY: EXIT:
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# GR25 - SDRAM size
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# GR26 &__head_reference [saved]
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# GR30 LED address [saved]
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#
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###############################################################################
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.globl __head_fr555_survey_sdram
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__head_fr555_survey_sdram:
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sethi.p %hi(__551_DAMK0),gr11
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setlo %lo(__551_DAMK0),gr11
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sethi.p %hi(__551_DARS0),gr12
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setlo %lo(__551_DARS0),gr12
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sethi.p %hi(0xfff),gr17 ; unused SDRAM AMK value
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setlo %lo(0xfff),gr17
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setlos #0,gr25
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ldi @(gr11,#0x00),gr6 ; DAMK0: bits 11:0 match addr 11:0
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subcc gr6,gr17,gr0,icc0
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beq icc0,#0,__head_no_DCS0
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ldi @(gr12,#0x00),gr4 ; DARS0
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add gr25,gr6,gr25
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addi gr25,#1,gr25
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__head_no_DCS0:
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ldi @(gr11,#0x04),gr6 ; DAMK1: bits 11:0 match addr 11:0
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subcc gr6,gr17,gr0,icc0
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beq icc0,#0,__head_no_DCS1
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ldi @(gr12,#0x04),gr4 ; DARS1
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add gr25,gr6,gr25
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addi gr25,#1,gr25
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__head_no_DCS1:
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ldi @(gr11,#0x8),gr6 ; DAMK2: bits 11:0 match addr 11:0
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subcc gr6,gr17,gr0,icc0
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beq icc0,#0,__head_no_DCS2
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ldi @(gr12,#0x8),gr4 ; DARS2
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add gr25,gr6,gr25
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addi gr25,#1,gr25
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__head_no_DCS2:
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ldi @(gr11,#0xc),gr6 ; DAMK3: bits 11:0 match addr 11:0
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subcc gr6,gr17,gr0,icc0
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beq icc0,#0,__head_no_DCS3
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ldi @(gr12,#0xc),gr4 ; DARS3
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add gr25,gr6,gr25
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addi gr25,#1,gr25
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__head_no_DCS3:
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slli gr25,#20,gr25 ; shift [11:0] -> [31:20]
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bralr
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###############################################################################
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#
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# set the protection map with the I/DAMPR registers
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#
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# ENTRY: EXIT:
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# GR25 SDRAM size saved
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# GR30 LED address saved
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#
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###############################################################################
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.globl __head_fr555_set_protection
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__head_fr555_set_protection:
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movsg lr,gr27
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sethi.p %hi(0xfff00000),gr11
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setlo %lo(0xfff00000),gr11
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# set the I/O region protection registers for FR555
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sethi.p %hi(__region_IO),gr7
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setlo %lo(__region_IO),gr7
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ori gr7,#xAMPRx_SS_512Mb|xAMPRx_S_KERNEL|xAMPRx_C|xAMPRx_V,gr5
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movgs gr0,iampr15
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movgs gr0,iamlr15
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movgs gr5,dampr15
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movgs gr7,damlr15
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# need to tile the remaining IAMPR/DAMPR registers to cover as much of the RAM as possible
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# - start with the highest numbered registers
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sethi.p %hi(__kernel_image_end),gr8
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setlo %lo(__kernel_image_end),gr8
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sethi.p %hi(32768),gr4 ; allow for a maximal allocator bitmap
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setlo %lo(32768),gr4
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add gr8,gr4,gr8
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sethi.p %hi(1024*2048-1),gr4 ; round up to nearest 2MiB
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setlo %lo(1024*2048-1),gr4
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add.p gr8,gr4,gr8
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not gr4,gr4
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and gr8,gr4,gr8
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sethi.p %hi(__page_offset),gr9
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setlo %lo(__page_offset),gr9
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add gr9,gr25,gr9
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# GR8 = base of uncovered RAM
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# GR9 = top of uncovered RAM
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# GR11 - mask for DAMLR/IAMLR regs
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#
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call __head_split_region
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movgs gr4,iampr14
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movgs gr6,iamlr14
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movgs gr5,dampr14
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movgs gr7,damlr14
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call __head_split_region
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movgs gr4,iampr13
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movgs gr6,iamlr13
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movgs gr5,dampr13
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movgs gr7,damlr13
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call __head_split_region
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movgs gr4,iampr12
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movgs gr6,iamlr12
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movgs gr5,dampr12
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movgs gr7,damlr12
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call __head_split_region
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movgs gr4,iampr11
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movgs gr6,iamlr11
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movgs gr5,dampr11
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movgs gr7,damlr11
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call __head_split_region
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movgs gr4,iampr10
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movgs gr6,iamlr10
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movgs gr5,dampr10
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movgs gr7,damlr10
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call __head_split_region
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movgs gr4,iampr9
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movgs gr6,iamlr9
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movgs gr5,dampr9
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movgs gr7,damlr9
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call __head_split_region
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movgs gr4,iampr8
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movgs gr6,iamlr8
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movgs gr5,dampr8
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movgs gr7,damlr8
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call __head_split_region
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movgs gr4,iampr7
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movgs gr6,iamlr7
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movgs gr5,dampr7
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movgs gr7,damlr7
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call __head_split_region
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movgs gr4,iampr6
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movgs gr6,iamlr6
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movgs gr5,dampr6
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movgs gr7,damlr6
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call __head_split_region
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movgs gr4,iampr5
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movgs gr6,iamlr5
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movgs gr5,dampr5
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movgs gr7,damlr5
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call __head_split_region
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movgs gr4,iampr4
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movgs gr6,iamlr4
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movgs gr5,dampr4
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movgs gr7,damlr4
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call __head_split_region
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movgs gr4,iampr3
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movgs gr6,iamlr3
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movgs gr5,dampr3
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movgs gr7,damlr3
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call __head_split_region
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movgs gr4,iampr2
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movgs gr6,iamlr2
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movgs gr5,dampr2
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movgs gr7,damlr2
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call __head_split_region
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movgs gr4,iampr1
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movgs gr6,iamlr1
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movgs gr5,dampr1
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movgs gr7,damlr1
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# cover kernel core image with kernel-only segment
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sethi.p %hi(__page_offset),gr8
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setlo %lo(__page_offset),gr8
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call __head_split_region
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#ifdef CONFIG_PROTECT_KERNEL
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ori.p gr4,#xAMPRx_S_KERNEL,gr4
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ori gr5,#xAMPRx_S_KERNEL,gr5
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#endif
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movgs gr4,iampr0
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movgs gr6,iamlr0
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movgs gr5,dampr0
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movgs gr7,damlr0
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jmpl @(gr27,gr0)
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