mirror of
https://github.com/AsahiLinux/u-boot
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212 lines
4.4 KiB
ArmAsm
212 lines
4.4 KiB
ArmAsm
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/*
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* Copyright (C) 2011 Renesas Solutions Corp.
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* Copyright (C) 2011 Nobuhiro Iwamatsu <nobuhiro.Iwamatsu.yj@renesas.com>
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*
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* board/renesas/ecovec/lowlevel_init.S
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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 as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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#include <config.h>
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#include <version.h>
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#include <asm/processor.h>
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#include <asm/macro.h>
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#include <configs/ecovec.h>
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.global lowlevel_init
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.text
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.align 2
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lowlevel_init:
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/* jump to 0xA0020000 if bit 1 of PVDR_A */
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mov.l PVDR_A, r1
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mov.l PVDR_D, r2
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mov.b @r1, r0
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tst r0, r2
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bt 1f
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mov.l JUMP_A, r1
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jmp @r1
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nop
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1:
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/* Disable watchdog */
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write16 RWTCSR_A, RWTCSR_D
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/* MMU Disable */
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write32 MMUCR_A, MMUCR_D
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/* Setup clocks */
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write32 PLLCR_A, PLLCR_D
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write32 FRQCRA_A, FRQCRA_D
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write32 FRQCRB_A, FRQCRB_D
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wait_timer TIMER_D
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write32 MMSELR_A, MMSELR_D
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/* Srtup BSC */
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write32 CMNCR_A, CMNCR_D
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write32 CS0BCR_A, CS0BCR_D
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write32 CS0WCR_A, CS0WCR_D
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wait_timer TIMER_D
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/* Setup SDRAM */
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write32 DBPDCNT0_A, DBPDCNT0_D0
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write32 DBCONF_A, DBCONF_D
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write32 DBTR0_A, DBTR0_D
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write32 DBTR1_A, DBTR1_D
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write32 DBTR2_A, DBTR2_D
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write32 DBTR3_A, DBTR3_D
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write32 DBKIND_A, DBKIND_D
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write32 DBCKECNT_A, DBCKECNT_D
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wait_timer TIMER_D
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write32 DBCMDCNT_A, DBCMDCNT_D0
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write32 DBMRCNT_A, DBMRCNT_D0
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write32 DBMRCNT_A, DBMRCNT_D1
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write32 DBMRCNT_A, DBMRCNT_D2
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write32 DBMRCNT_A, DBMRCNT_D3
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write32 DBCMDCNT_A, DBCMDCNT_D0
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write32 DBCMDCNT_A, DBCMDCNT_D1
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write32 DBCMDCNT_A, DBCMDCNT_D1
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write32 DBMRCNT_A, DBMRCNT_D4
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write32 DBMRCNT_A, DBMRCNT_D5
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write32 DBMRCNT_A, DBMRCNT_D6
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wait_timer TIMER_D
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write32 DBEN_A, DBEN_D
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write32 DBRFPDN1_A, DBRFPDN1_D
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write32 DBRFPDN2_A, DBRFPDN2_D
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write32 DBCMDCNT_A, DBCMDCNT_D0
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/* Dummy read */
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mov.l DUMMY_A ,r1
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synco
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mov.l @r1, r0
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synco
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mov.l SDRAM_A ,r1
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synco
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mov.l @r1, r0
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synco
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wait_timer TIMER_D
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add #4, r1
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synco
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mov.l @r1, r0
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synco
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wait_timer TIMER_D
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add #4, r1
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synco
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mov.l @r1, r0
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synco
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wait_timer TIMER_D
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add #4, r1
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synco
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mov.l @r1, r0
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synco
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wait_timer TIMER_D
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write32 DBCMDCNT_A, DBCMDCNT_D0
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write32 DBCMDCNT_A, DBCMDCNT_D1
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write32 DBPDCNT0_A, DBPDCNT0_D1
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write32 DBRFPDN0_A, DBRFPDN0_D
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wait_timer TIMER_D
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write32 CCR_A, CCR_D
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stc sr, r0
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mov.l SR_MASK_D, r1
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and r1, r0
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ldc r0, sr
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rts
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.align 2
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PVDR_A: .long PVDR
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PVDR_D: .long 0x00000001
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JUMP_A: .long CONFIG_ECOVEC_ROMIMAGE_ADDR
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TIMER_D: .long 64
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RWTCSR_A: .long RWTCSR
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RWTCSR_D: .long 0x0000A507
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MMUCR_A: .long MMUCR
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MMUCR_D: .long 0x00000004
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PLLCR_A: .long PLLCR
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PLLCR_D: .long 0x00004000
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FRQCRA_A: .long FRQCRA
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FRQCRA_D: .long 0x8E003508
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FRQCRB_A: .long FRQCRB
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FRQCRB_D: .long 0x0
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MMSELR_A: .long MMSELR
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MMSELR_D: .long 0xA5A50000
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CMNCR_A: .long CMNCR
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CMNCR_D: .long 0x00000013
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CS0BCR_A: .long CS0BCR
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CS0BCR_D: .long 0x11110400
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CS0WCR_A: .long CS0WCR
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CS0WCR_D: .long 0x00000440
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DBPDCNT0_A: .long DBPDCNT0
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DBPDCNT0_D0: .long 0x00000181
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DBPDCNT0_D1: .long 0x00000080
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DBCONF_A: .long DBCONF
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DBCONF_D: .long 0x015B0002
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DBTR0_A: .long DBTR0
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DBTR0_D: .long 0x03061502
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DBTR1_A: .long DBTR1
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DBTR1_D: .long 0x02020102
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DBTR2_A: .long DBTR2
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DBTR2_D: .long 0x01090305
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DBTR3_A: .long DBTR3
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DBTR3_D: .long 0x00000002
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DBKIND_A: .long DBKIND
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DBKIND_D: .long 0x00000005
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DBCKECNT_A: .long DBCKECNT
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DBCKECNT_D: .long 0x00000001
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DBCMDCNT_A: .long DBCMDCNT
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DBCMDCNT_D0:.long 0x2
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DBCMDCNT_D1:.long 0x4
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DBMRCNT_A: .long DBMRCNT
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DBMRCNT_D0: .long 0x00020000
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DBMRCNT_D1: .long 0x00030000
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DBMRCNT_D2: .long 0x00010040
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DBMRCNT_D3: .long 0x00000532
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DBMRCNT_D4: .long 0x00000432
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DBMRCNT_D5: .long 0x000103C0
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DBMRCNT_D6: .long 0x00010040
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DBEN_A: .long DBEN
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DBEN_D: .long 0x01
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DBRFPDN0_A: .long DBRFPDN0
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DBRFPDN1_A: .long DBRFPDN1
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DBRFPDN2_A: .long DBRFPDN2
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DBRFPDN0_D: .long 0x00010000
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DBRFPDN1_D: .long 0x00000613
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DBRFPDN2_D: .long 0x238C003A
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SDRAM_A: .long 0xa8000000
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DUMMY_A: .long 0x0c400000
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CCR_A: .long CCR
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CCR_D: .long 0x0000090B
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SR_MASK_D: .long 0xEFFFFF0F
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