diff options
Diffstat (limited to 'arch/frv/kernel/head-uc-fr401.S')
| -rw-r--r-- | arch/frv/kernel/head-uc-fr401.S | 311 |
1 files changed, 0 insertions, 311 deletions
diff --git a/arch/frv/kernel/head-uc-fr401.S b/arch/frv/kernel/head-uc-fr401.S deleted file mode 100644 index 438643cfa38e..000000000000 --- a/arch/frv/kernel/head-uc-fr401.S +++ /dev/null @@ -1,311 +0,0 @@ -/* head-uc-fr401.S: FR401/3/5 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 __400_DBR0 0xfe000e00 -#define __400_DBR1 0xfe000e08 -#define __400_DBR2 0xfe000e10 /* not on FR401 */ -#define __400_DBR3 0xfe000e18 /* not on FR401 */ -#define __400_DAM0 0xfe000f00 -#define __400_DAM1 0xfe000f08 -#define __400_DAM2 0xfe000f10 /* not on FR401 */ -#define __400_DAM3 0xfe000f18 /* not on FR401 */ -#define __400_LGCR 0xfe000010 -#define __400_LCR 0xfe000100 -#define __400_LSBR 0xfe000c00 - - __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 DBR0 is present -# CC1 - T if DBR1 is present -# CC2 - T if DBR2 is present (not FR401/FR401A) -# CC3 - T if DBR3 is present (not FR401/FR401A) -# -############################################################################### - .globl __head_fr401_describe_sdram -__head_fr401_describe_sdram: - sethi.p %hi(__400_DBR0),gr14 - setlo %lo(__400_DBR0),gr14 - setlos.p #__400_DBR1-__400_DBR0,gr11 - setlos #__400_DBR2-__400_DBR0,gr12 - setlos.p #__400_DBR3-__400_DBR0,gr13 - setlos #32,gr5 ; cacheline size - setlos.p #0,gr15 ; amount to shift addr reg by - - # specify which DBR regs are present - setlos #0x00ff,gr4 - movgs gr4,cccr - movsg psr,gr3 ; check for FR401/FR401A - srli gr3,#25,gr3 - subicc gr3,#0x20>>1,gr0,icc0 - bnelr icc0,#1 - setlos #0x000f,gr4 - movgs gr4,cccr - bralr - -############################################################################### -# -# rearrange the bus controller registers -# -# ENTRY: EXIT: -# GR26 &__head_reference [saved] -# GR30 LED address revised LED address -# -############################################################################### - .globl __head_fr401_set_busctl -__head_fr401_set_busctl: - sethi.p %hi(__400_LGCR),gr4 - setlo %lo(__400_LGCR),gr4 - sethi.p %hi(__400_LSBR),gr10 - setlo %lo(__400_LSBR),gr10 - sethi.p %hi(__400_LCR),gr11 - setlo %lo(__400_LCR),gr11 - - # set the bus controller - ldi @(gr4,#0),gr5 - ori gr5,#0xff,gr5 ; make sure all chip-selects are enabled - sti gr5,@(gr4,#0) - - 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 - sethi.p %hi(LED_ADDR - 0x20000000 +__region_CS2),gr30 - setlo %lo(LED_ADDR - 0x20000000 +__region_CS2),gr30 - bralr - -############################################################################### -# -# determine the total SDRAM size -# -# ENTRY: EXIT: -# GR25 - SDRAM size -# GR26 &__head_reference [saved] -# GR30 LED address [saved] -# -############################################################################### - .globl __head_fr401_survey_sdram -__head_fr401_survey_sdram: - sethi.p %hi(__400_DAM0),gr11 - setlo %lo(__400_DAM0),gr11 - sethi.p %hi(__400_DBR0),gr12 - setlo %lo(__400_DBR0),gr12 - - sethi.p %hi(0xfe000000),gr17 ; unused SDRAM DBR value - setlo %lo(0xfe000000),gr17 - setlos #0,gr25 - - ldi @(gr12,#0x00),gr4 ; DAR0 - subcc gr4,gr17,gr0,icc0 - beq icc0,#0,__head_no_DCS0 - ldi @(gr11,#0x00),gr6 ; DAM0: bits 31:20 match addr 31:20 - add gr25,gr6,gr25 - addi gr25,#1,gr25 -__head_no_DCS0: - - ldi @(gr12,#0x08),gr4 ; DAR1 - subcc gr4,gr17,gr0,icc0 - beq icc0,#0,__head_no_DCS1 - ldi @(gr11,#0x08),gr6 ; DAM1: bits 31:20 match addr 31:20 - add gr25,gr6,gr25 - addi gr25,#1,gr25 -__head_no_DCS1: - - # FR401/FR401A does not have DCS2/3 - movsg psr,gr3 - srli gr3,#25,gr3 - subicc gr3,#0x20>>1,gr0,icc0 - beq icc0,#0,__head_no_DCS3 - - ldi @(gr12,#0x10),gr4 ; DAR2 - subcc gr4,gr17,gr0,icc0 - beq icc0,#0,__head_no_DCS2 - ldi @(gr11,#0x10),gr6 ; DAM2: bits 31:20 match addr 31:20 - add gr25,gr6,gr25 - addi gr25,#1,gr25 -__head_no_DCS2: - - ldi @(gr12,#0x18),gr4 ; DAR3 - subcc gr4,gr17,gr0,icc0 - beq icc0,#0,__head_no_DCS3 - ldi @(gr11,#0x18),gr6 ; DAM3: bits 31:20 match addr 31:20 - add gr25,gr6,gr25 - addi gr25,#1,gr25 -__head_no_DCS3: - bralr - -############################################################################### -# -# set the protection map with the I/DAMPR registers -# -# ENTRY: EXIT: -# GR25 SDRAM size [saved] -# GR26 &__head_reference [saved] -# GR30 LED address [saved] -# -############################################################################### - .globl __head_fr401_set_protection -__head_fr401_set_protection: - movsg lr,gr27 - - # set the I/O region protection registers for FR401/3/5 - sethi.p %hi(__region_IO),gr5 - setlo %lo(__region_IO),gr5 - ori gr5,#xAMPRx_SS_512Mb|xAMPRx_S_KERNEL|xAMPRx_C|xAMPRx_V,gr5 - movgs gr0,iampr7 - movgs gr5,dampr7 ; General I/O tile - - # 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 - -#ifdef CONFIG_MB93093_PDK - sethi.p %hi(__region_CS2),gr4 - setlo %lo(__region_CS2),gr4 - ori gr4,#xAMPRx_SS_1Mb|xAMPRx_S_KERNEL|xAMPRx_C|xAMPRx_V,gr4 - movgs gr4,dampr6 - movgs gr0,iampr6 -#else - call __head_split_region - movgs gr4,iampr6 - movgs gr5,dampr6 -#endif - call __head_split_region - movgs gr4,iampr5 - movgs gr5,dampr5 - call __head_split_region - movgs gr4,iampr4 - movgs gr5,dampr4 - call __head_split_region - movgs gr4,iampr3 - movgs gr5,dampr3 - call __head_split_region - movgs gr4,iampr2 - movgs gr5,dampr2 - call __head_split_region - movgs gr4,iampr1 - movgs gr5,dampr1 - - # 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 gr5,dampr0 - jmpl @(gr27,gr0) |