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/*
* Copyright (C) 2007,2008 Nobuhiro Iwamatsu
*
* u-boot/board/r7780mp/lowlevel_init.S
*
* 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.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*/
#include <config.h>
#include <version.h>
#include <asm/processor.h>
/*
* Board specific low level init code, called _very_ early in the
* startup sequence. Relocation to SDRAM has not happened yet, no
* stack is available, bss section has not been initialised, etc.
*
* (Note: As no stack is available, no subroutines can be called...).
*/
.global lowlevel_init
.text
.align 2
lowlevel_init:
mov.l CCR_A, r1 /* Address of Cache Control Register */
mov.l CCR_D, r0 /* Instruction Cache Invalidate */
mov.l r0, @r1
mov.l FRQCR_A, r1 /* Frequency control register */
mov.l FRQCR_D, r0
mov.l r0, @r1
/* pin_multi_setting */
mov.l BBG_PMMR_A,r1
mov.l BBG_PMMR_D_PMSR1,r0
mov.l r0,@r1
mov.l BBG_PMSR1_A,r1
mov.l BBG_PMSR1_D,r0
mov.l r0,@r1
mov.l BBG_PMMR_A,r1
mov.l BBG_PMMR_D_PMSR2,r0
mov.l r0,@r1
mov.l BBG_PMSR2_A,r1
mov.l BBG_PMSR2_D,r0
mov.l r0,@r1
mov.l BBG_PMMR_A,r1
mov.l BBG_PMMR_D_PMSR3,r0
mov.l r0,@r1
mov.l BBG_PMSR3_A,r1
mov.l BBG_PMSR3_D,r0
mov.l r0,@r1
mov.l BBG_PMMR_A,r1
mov.l BBG_PMMR_D_PMSR4,r0
mov.l r0,@r1
mov.l BBG_PMSR4_A,r1
mov.l BBG_PMSR4_D,r0
mov.l r0,@r1
mov.l BBG_PMMR_A,r1
mov.l BBG_PMMR_D_PMSRG,r0
mov.l r0,@r1
mov.l BBG_PMSRG_A,r1
mov.l BBG_PMSRG_D,r0
mov.l r0,@r1
/* cpg_setting */
mov.l FRQCR_A,r1
mov.l FRQCR_D,r0
mov.l r0,@r1
mov.l DLLCSR_A,r1
mov.l DLLCSR_D,r0
mov.l r0,@r1
nop
nop
nop
nop
nop
nop
nop
nop
nop
nop
/* wait 200us */
mov.l REPEAT0_R3,r3
mov #0,r2
repeat0:
add #1,r2
cmp/hs r3,r2
bf repeat0
nop
/* bsc_setting */
mov.l MMSELR_A,r1
mov.l MMSELR_D,r0
mov.l r0,@r1
mov.l BCR_A,r1
mov.l BCR_D,r0
mov.l r0,@r1
mov.l CS0BCR_A,r1
mov.l CS0BCR_D,r0
mov.l r0,@r1
mov.l CS1BCR_A,r1
mov.l CS1BCR_D,r0
mov.l r0,@r1
mov.l CS2BCR_A,r1
mov.l CS2BCR_D,r0
mov.l r0,@r1
mov.l CS4BCR_A,r1
mov.l CS4BCR_D,r0
mov.l r0,@r1
mov.l CS5BCR_A,r1
mov.l CS5BCR_D,r0
mov.l r0,@r1
mov.l CS6BCR_A,r1
mov.l CS6BCR_D,r0
mov.l r0,@r1
mov.l CS0WCR_A,r1
mov.l CS0WCR_D,r0
mov.l r0,@r1
mov.l CS1WCR_A,r1
mov.l CS1WCR_D,r0
mov.l r0,@r1
mov.l CS2WCR_A,r1
mov.l CS2WCR_D,r0
mov.l r0,@r1
mov.l CS4WCR_A,r1
mov.l CS4WCR_D,r0
mov.l r0,@r1
mov.l CS5WCR_A,r1
mov.l CS5WCR_D,r0
mov.l r0,@r1
mov.l CS6WCR_A,r1
mov.l CS6WCR_D,r0
mov.l r0,@r1
mov.l CS5PCR_A,r1
mov.l CS5PCR_D,r0
mov.l r0,@r1
mov.l CS6PCR_A,r1
mov.l CS6PCR_D,r0
mov.l r0,@r1
/* ddr_setting */
/* wait 200us */
mov.l REPEAT0_R3,r3
mov #0,r2
repeat1:
add #1,r2
cmp/hs r3,r2
bf repeat1
nop
mov.l MIM_U_A,r0
mov.l MIM_U_D,r1
synco
mov.l r1,@r0
synco
mov.l MIM_L_A,r0
mov.l MIM_L_D0,r1
synco
mov.l r1,@r0
synco
mov.l STR_L_A,r0
mov.l STR_L_D,r1
synco
mov.l r1,@r0
synco
mov.l SDR_L_A,r0
mov.l SDR_L_D,r1
synco
mov.l r1,@r0
synco
nop
nop
nop
nop
mov.l SCR_L_A,r0
mov.l SCR_L_D0,r1
synco
mov.l r1,@r0
synco
mov.l SCR_L_A,r0
mov.l SCR_L_D1,r1
synco
mov.l r1,@r0
synco
nop
nop
nop
mov.l EMRS_A,r0
mov.l EMRS_D,r1
synco
mov.l r1,@r0
synco
nop
nop
nop
mov.l MRS1_A,r0
mov.l MRS1_D,r1
synco
mov.l r1,@r0
synco
nop
nop
nop
mov.l SCR_L_A,r0
mov.l SCR_L_D2,r1
synco
mov.l r1,@r0
synco
nop
nop
nop
mov.l SCR_L_A,r0
mov.l SCR_L_D3,r1
synco
mov.l r1,@r0
synco
nop
nop
nop
mov.l SCR_L_A,r0
mov.l SCR_L_D4,r1
synco
mov.l r1,@r0
synco
nop
nop
nop
mov.l MRS2_A,r0
mov.l MRS2_D,r1
synco
mov.l r1,@r0
synco
nop
nop
nop
mov.l SCR_L_A,r0
mov.l SCR_L_D5,r1
synco
mov.l r1,@r0
synco
/* wait 200us */
mov.l REPEAT0_R1,r3
mov #0,r2
repeat2:
add #1,r2
cmp/hs r3,r2
bf repeat2
synco
mov.l MIM_L_A,r0
mov.l MIM_L_D1,r1
synco
mov.l r1,@r0
synco
rts
nop
.align 4
RWTCSR_D_1: .word 0xA507
RWTCSR_D_2: .word 0xA507
RWTCNT_D: .word 0x5A00
BBG_PMMR_A: .long 0xFF800010
BBG_PMSR1_A: .long 0xFF800014
BBG_PMSR2_A: .long 0xFF800018
BBG_PMSR3_A: .long 0xFF80001C
BBG_PMSR4_A: .long 0xFF800020
BBG_PMSRG_A: .long 0xFF800024
BBG_PMMR_D_PMSR1: .long 0xffffbffd
BBG_PMSR1_D: .long 0x00004002
BBG_PMMR_D_PMSR2: .long 0xfc21a7ff
BBG_PMSR2_D: .long 0x03de5800
BBG_PMMR_D_PMSR3: .long 0xfffffff8
BBG_PMSR3_D: .long 0x00000007
BBG_PMMR_D_PMSR4: .long 0xdffdfff9
BBG_PMSR4_D: .long 0x20020006
BBG_PMMR_D_PMSRG: .long 0xffffffff
BBG_PMSRG_D: .long 0x00000000
FRQCR_A: .long FRQCR
DLLCSR_A: .long 0xffc40010
FRQCR_D: .long 0x40233035
DLLCSR_D: .long 0x00000000
/* for DDR-SDRAM */
MIM_U_A: .long MIM_1
MIM_L_A: .long MIM_2
SCR_U_A: .long SCR_1
SCR_L_A: .long SCR_2
STR_U_A: .long STR_1
STR_L_A: .long STR_2
SDR_U_A: .long SDR_1
SDR_L_A: .long SDR_2
EMRS_A: .long 0xFEC02000
MRS1_A: .long 0xFEC00B08
MRS2_A: .long 0xFEC00308
MIM_U_D: .long 0x00004000
MIM_L_D0: .long 0x03e80009
MIM_L_D1: .long 0x03e80209
SCR_L_D0: .long 0x3
SCR_L_D1: .long 0x2
SCR_L_D2: .long 0x2
SCR_L_D3: .long 0x4
SCR_L_D4: .long 0x4
SCR_L_D5: .long 0x0
STR_L_D: .long 0x000f0000
SDR_L_D: .long 0x00000400
EMRS_D: .long 0x0
MRS1_D: .long 0x0
MRS2_D: .long 0x0
/* Cache Controller */
CCR_A: .long CCR
MMUCR_A: .long MMUCR
RWTCNT_A: .long WTCNT
CCR_D: .long 0x0000090b
CCR_D_2: .long 0x00000103
MMUCR_D: .long 0x00000004
MSTPCR0_D: .long 0x00001001
MSTPCR2_D: .long 0xffffffff
/* local Bus State Controller */
MMSELR_A: .long MMSELR
BCR_A: .long BCR
CS0BCR_A: .long CS0BCR
CS1BCR_A: .long CS1BCR
CS2BCR_A: .long CS2BCR
CS4BCR_A: .long CS4BCR
CS5BCR_A: .long CS5BCR
CS6BCR_A: .long CS6BCR
CS0WCR_A: .long CS0WCR
CS1WCR_A: .long CS1WCR
CS2WCR_A: .long CS2WCR
CS4WCR_A: .long CS4WCR
CS5WCR_A: .long CS5WCR
CS6WCR_A: .long CS6WCR
CS5PCR_A: .long CS5PCR
CS6PCR_A: .long CS6PCR
MMSELR_D: .long 0xA5A50003
BCR_D: .long 0x00000000
CS0BCR_D: .long 0x77777770
CS1BCR_D: .long 0x77777670
CS2BCR_D: .long 0x77777770
CS4BCR_D: .long 0x77777770
CS5BCR_D: .long 0x77777670
CS6BCR_D: .long 0x77777770
CS0WCR_D: .long 0x00020006
CS1WCR_D: .long 0x00232304
CS2WCR_D: .long 0x7777770F
CS4WCR_D: .long 0x7777770F
CS5WCR_D: .long 0x00101006
CS6WCR_D: .long 0x77777703
CS5PCR_D: .long 0x77000000
CS6PCR_D: .long 0x77000000
REPEAT0_R3: .long 0x00002000
REPEAT0_R1: .long 0x0000200
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