mirror of https://github.com/hak5/openwrt.git
544 lines
12 KiB
ArmAsm
544 lines
12 KiB
ArmAsm
/*
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* Memory sub-system initialization code for AR9 board.
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*
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* Copyright (c) 2003 Wolfgang Denk <wd@denx.de>
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* Copyright (c) 2005 Andre Messerschmidt Infineon
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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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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/* History:
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peng liu May 25, 2006, for PLL setting after reset, 05252006
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*/
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#include <config.h>
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#include <version.h>
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#include <asm/regdef.h>
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#if defined(CONFIG_USE_DDR_RAM)
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#if defined(CONFIG_CPU_111M_RAM_111M) || defined(CONFIG_CPU_333M_RAM_111M)
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# include "ar9_ddr111_settings.h"
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#elif defined(CONFIG_CPU_166M_RAM_166M) || defined(CONFIG_CPU_333M_RAM_166M) || defined(CONFIG_CPU_500M_RAM_166M)
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# include "ar9_ddr166_settings.h"
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#elif defined(CONFIG_CPU_442M_RAM_147M)
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# include "ar9_ddr166_settings.h"
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#elif defined(CONFIG_CPU_393M_RAM_196M)
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# ifdef CONFIG_ETRON_RAM
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# include "etron_ddr196_settings.h"
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# else
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# include "ar9_ddr196_settings.h"
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# endif
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#elif defined(CONFIG_CPU_442M_RAM_221M)
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# include "ar9_ddr221_settings.h"
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#elif defined(CONFIG_CPU_500M_RAM_250M)
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# include "ar9_ddr250_settings.h"
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#else
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# warning "missing definition for ddr_settings.h, use default!"
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# include "ar9_ddr_settings.h"
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#endif
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#endif /* CONFIG_USE_DDR_RAM */
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#if defined(CONFIG_USE_DDR_RAM) && !defined(MC_DC0_VALUE)
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#error "missing include of ddr_settings.h"
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#endif
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#define EBU_MODUL_BASE 0xBE105300
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#define EBU_CLC(value) 0x0000(value)
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#define EBU_CON(value) 0x0010(value)
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#define EBU_ADDSEL0(value) 0x0020(value)
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#define EBU_ADDSEL1(value) 0x0024(value)
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#define EBU_ADDSEL2(value) 0x0028(value)
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#define EBU_ADDSEL3(value) 0x002C(value)
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#define EBU_BUSCON0(value) 0x0060(value)
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#define EBU_BUSCON1(value) 0x0064(value)
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#define EBU_BUSCON2(value) 0x0068(value)
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#define EBU_BUSCON3(value) 0x006C(value)
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#define MC_MODUL_BASE 0xBF800000
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#define MC_ERRCAUSE(value) 0x0010(value)
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#define MC_ERRADDR(value) 0x0020(value)
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#define MC_CON(value) 0x0060(value)
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#define MC_SRAM_ENABLE 0x00000004
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#define MC_SDRAM_ENABLE 0x00000002
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#define MC_DDRRAM_ENABLE 0x00000001
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#define MC_SDR_MODUL_BASE 0xBF800200
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#define MC_IOGP(value) 0x0000(value)
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#define MC_CTRLENA(value) 0x0010(value)
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#define MC_MRSCODE(value) 0x0020(value)
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#define MC_CFGDW(value) 0x0030(value)
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#define MC_CFGPB0(value) 0x0040(value)
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#define MC_LATENCY(value) 0x0080(value)
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#define MC_TREFRESH(value) 0x0090(value)
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#define MC_SELFRFSH(value) 0x00A0(value)
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#define MC_DDR_MODUL_BASE 0xBF801000
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#define MC_DC00(value) 0x0000(value)
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#define MC_DC01(value) 0x0010(value)
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#define MC_DC02(value) 0x0020(value)
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#define MC_DC03(value) 0x0030(value)
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#define MC_DC04(value) 0x0040(value)
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#define MC_DC05(value) 0x0050(value)
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#define MC_DC06(value) 0x0060(value)
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#define MC_DC07(value) 0x0070(value)
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#define MC_DC08(value) 0x0080(value)
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#define MC_DC09(value) 0x0090(value)
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#define MC_DC10(value) 0x00A0(value)
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#define MC_DC11(value) 0x00B0(value)
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#define MC_DC12(value) 0x00C0(value)
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#define MC_DC13(value) 0x00D0(value)
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#define MC_DC14(value) 0x00E0(value)
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#define MC_DC15(value) 0x00F0(value)
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#define MC_DC16(value) 0x0100(value)
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#define MC_DC17(value) 0x0110(value)
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#define MC_DC18(value) 0x0120(value)
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#define MC_DC19(value) 0x0130(value)
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#define MC_DC20(value) 0x0140(value)
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#define MC_DC21(value) 0x0150(value)
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#define MC_DC22(value) 0x0160(value)
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#define MC_DC23(value) 0x0170(value)
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#define MC_DC24(value) 0x0180(value)
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#define MC_DC25(value) 0x0190(value)
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#define MC_DC26(value) 0x01A0(value)
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#define MC_DC27(value) 0x01B0(value)
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#define MC_DC28(value) 0x01C0(value)
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#define MC_DC29(value) 0x01D0(value)
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#define MC_DC30(value) 0x01E0(value)
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#define MC_DC31(value) 0x01F0(value)
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#define MC_DC32(value) 0x0200(value)
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#define MC_DC33(value) 0x0210(value)
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#define MC_DC34(value) 0x0220(value)
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#define MC_DC35(value) 0x0230(value)
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#define MC_DC36(value) 0x0240(value)
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#define MC_DC37(value) 0x0250(value)
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#define MC_DC38(value) 0x0260(value)
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#define MC_DC39(value) 0x0270(value)
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#define MC_DC40(value) 0x0280(value)
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#define MC_DC41(value) 0x0290(value)
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#define MC_DC42(value) 0x02A0(value)
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#define MC_DC43(value) 0x02B0(value)
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#define MC_DC44(value) 0x02C0(value)
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#define MC_DC45(value) 0x02D0(value)
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#define MC_DC46(value) 0x02E0(value)
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#define RCU_OFFSET 0xBF203000
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#define RCU_RST_REQ (RCU_OFFSET + 0x0010)
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#define RCU_STS (RCU_OFFSET + 0x0014)
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#define CGU_OFFSET 0xBF103000
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#define PLL0_CFG (CGU_OFFSET + 0x0004)
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#define PLL1_CFG (CGU_OFFSET + 0x0008)
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#define PLL2_CFG (CGU_OFFSET + 0x000C)
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#define CGU_SYS (CGU_OFFSET + 0x0010)
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#define CGU_UPDATE (CGU_OFFSET + 0x0014)
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#define IF_CLK (CGU_OFFSET + 0x0018)
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#define CGU_SMD (CGU_OFFSET + 0x0020)
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#define CGU_CT1SR (CGU_OFFSET + 0x0028)
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#define CGU_CT2SR (CGU_OFFSET + 0x002C)
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#define CGU_PCMCR (CGU_OFFSET + 0x0030)
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#define PCI_CR_PCI (CGU_OFFSET + 0x0034)
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#define CGU_OSC_CTRL (CGU_OFFSET + 0x001C)
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#define CGU_MIPS_PWR_DWN (CGU_OFFSET + 0x0038)
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#define CLK_MEASURE (CGU_OFFSET + 0x003C)
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#define pll1_36MHz_CONFIG 0x9800f25f
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.set noreorder
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/*
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* void ebu_init(void)
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*/
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.globl ebu_init
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.ent ebu_init
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ebu_init:
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#if defined(CONFIG_EBU_ADDSEL0) || defined(CONFIG_EBU_ADDSEL1) || \
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defined(CONFIG_EBU_ADDSEL2) || defined(CONFIG_EBU_ADDSEL3) || \
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defined(CONFIG_EBU_BUSCON0) || defined(CONFIG_EBU_BUSCON1) || \
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defined(CONFIG_EBU_BUSCON2) || defined(CONFIG_EBU_BUSCON3)
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li t1, EBU_MODUL_BASE
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#if defined(CONFIG_EBU_ADDSEL0)
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li t2, CONFIG_EBU_ADDSEL0
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sw t2, EBU_ADDSEL0(t1)
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#endif
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#if defined(CONFIG_EBU_ADDSEL1)
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li t2, CONFIG_EBU_ADDSEL1
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sw t2, EBU_ADDSEL1(t1)
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#endif
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#if defined(CONFIG_EBU_ADDSEL2)
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li t2, CONFIG_EBU_ADDSEL2
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sw t2, EBU_ADDSEL2(t1)
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#endif
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#if defined(CONFIG_EBU_ADDSEL3)
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li t2, CONFIG_EBU_ADDSEL3
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sw t2, EBU_ADDSEL3(t1)
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#endif
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#if defined(CONFIG_EBU_BUSCON0)
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li t2, CONFIG_EBU_BUSCON0
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sw t2, EBU_BUSCON0(t1)
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#endif
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#if defined(CONFIG_EBU_BUSCON1)
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li t2, CONFIG_EBU_BUSCON1
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sw t2, EBU_BUSCON1(t1)
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#endif
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#if defined(CONFIG_EBU_BUSCON2)
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li t2, CONFIG_EBU_BUSCON2
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sw t2, EBU_BUSCON2(t1)
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#endif
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#if defined(CONFIG_EBU_BUSCON3)
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li t2, CONFIG_EBU_BUSCON3
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sw t2, EBU_BUSCON3(t1)
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#endif
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#endif
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j ra
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nop
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.end ebu_init
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/*
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* void cgu_init(long)
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*
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* a0 has the clock value
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*/
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.globl cgu_init
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.ent cgu_init
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cgu_init:
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li t2, CGU_SYS
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lw t2,0(t2)
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beq t2,a0,freq_up2date
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nop
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li t1, CGU_SYS
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sw a0,0(t1)
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#if defined(CONFIG_CPU_333M_RAM_166M) && defined(CONFIG_USE_PLL1)
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li t1, PLL1_CFG
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li a1, pll1_36MHz_CONFIG
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sw a1, 0(t1)
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#endif
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#if defined(CONFIG_CLASS_II_DDR_PAD)
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li t1, CGU_SMD
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li a1, 0x200000
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sw a1, 0(t1) // Turn on DDR PAD Class II to INC drive.
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#endif
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li t1, RCU_RST_REQ
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li t2, 0x40000008
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sw t2,0(t1)
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b wait_reset
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nop
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wait_reset:
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b wait_reset
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nop
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freq_up2date:
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j ra
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nop
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.end cgu_init
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#ifndef CONFIG_USE_DDR_RAM
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/*
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* void sdram_init(long)
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*
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* a0 has the clock value
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*/
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.globl sdram_init
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.ent sdram_init
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sdram_init:
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/* SDRAM Initialization
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*/
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li t1, MC_MODUL_BASE
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/* Clear Error log registers */
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sw zero, MC_ERRCAUSE(t1)
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sw zero, MC_ERRADDR(t1)
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/* Enable SDRAM module in memory controller */
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li t3, MC_SDRAM_ENABLE
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lw t2, MC_CON(t1)
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or t3, t2, t3
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sw t3, MC_CON(t1)
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li t1, MC_SDR_MODUL_BASE
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/* disable the controller */
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li t2, 0
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sw t2, MC_CTRLENA(t1)
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li t2, 0x822
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sw t2, MC_IOGP(t1)
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li t2, 0x2
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sw t2, MC_CFGDW(t1)
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/* Set CAS Latency */
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li t2, 0x00000020
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sw t2, MC_MRSCODE(t1)
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/* Set CS0 to SDRAM parameters */
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li t2, 0x000014d8
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sw t2, MC_CFGPB0(t1)
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/* Set SDRAM latency parameters */
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li t2, 0x00036325; /* BC PC100 */
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sw t2, MC_LATENCY(t1)
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/* Set SDRAM refresh rate */
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li t2, 0x00000C30
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sw t2, MC_TREFRESH(t1)
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/* Clear Power-down registers */
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sw zero, MC_SELFRFSH(t1)
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/* Finally enable the controller */
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li t2, 1
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sw t2, MC_CTRLENA(t1)
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j ra
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nop
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.end sdram_init
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#endif /* !CONFIG_USE_DDR_RAM */
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#ifdef CONFIG_USE_DDR_RAM
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/*
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* void ddrram_init(long)
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*
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* a0 has the clock value
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*/
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.globl ddrram_init
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.ent ddrram_init
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ddrram_init:
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/* DDR-DRAM Initialization
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*/
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li t1, MC_MODUL_BASE
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/* Clear Error log registers */
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sw zero, MC_ERRCAUSE(t1)
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sw zero, MC_ERRADDR(t1)
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/* Enable DDR module in memory controller */
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li t3, MC_DDRRAM_ENABLE
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lw t2, MC_CON(t1)
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or t3, t2, t3
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sw t3, MC_CON(t1)
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li t1, MC_DDR_MODUL_BASE
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/* Write configuration to DDR controller registers */
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li t2, MC_DC0_VALUE
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sw t2, MC_DC00(t1)
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li t2, MC_DC1_VALUE
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sw t2, MC_DC01(t1)
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li t2, MC_DC2_VALUE
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sw t2, MC_DC02(t1)
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li t2, MC_DC3_VALUE
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sw t2, MC_DC03(t1)
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li t2, MC_DC4_VALUE
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sw t2, MC_DC04(t1)
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li t2, MC_DC5_VALUE
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sw t2, MC_DC05(t1)
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li t2, MC_DC6_VALUE
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sw t2, MC_DC06(t1)
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li t2, MC_DC7_VALUE
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sw t2, MC_DC07(t1)
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li t2, MC_DC8_VALUE
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sw t2, MC_DC08(t1)
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li t2, MC_DC9_VALUE
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sw t2, MC_DC09(t1)
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li t2, MC_DC10_VALUE
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sw t2, MC_DC10(t1)
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li t2, MC_DC11_VALUE
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sw t2, MC_DC11(t1)
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li t2, MC_DC12_VALUE
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sw t2, MC_DC12(t1)
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li t2, MC_DC13_VALUE
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sw t2, MC_DC13(t1)
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li t2, MC_DC14_VALUE
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sw t2, MC_DC14(t1)
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li t2, MC_DC15_VALUE
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sw t2, MC_DC15(t1)
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li t2, MC_DC16_VALUE
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sw t2, MC_DC16(t1)
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li t2, MC_DC17_VALUE
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sw t2, MC_DC17(t1)
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li t2, MC_DC18_VALUE
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sw t2, MC_DC18(t1)
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li t2, MC_DC19_VALUE
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sw t2, MC_DC19(t1)
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li t2, MC_DC20_VALUE
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sw t2, MC_DC20(t1)
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li t2, MC_DC21_VALUE
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sw t2, MC_DC21(t1)
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li t2, MC_DC22_VALUE
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sw t2, MC_DC22(t1)
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li t2, MC_DC23_VALUE
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sw t2, MC_DC23(t1)
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li t2, MC_DC24_VALUE
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sw t2, MC_DC24(t1)
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li t2, MC_DC25_VALUE
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sw t2, MC_DC25(t1)
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li t2, MC_DC26_VALUE
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sw t2, MC_DC26(t1)
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li t2, MC_DC27_VALUE
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sw t2, MC_DC27(t1)
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li t2, MC_DC28_VALUE
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sw t2, MC_DC28(t1)
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li t2, MC_DC29_VALUE
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sw t2, MC_DC29(t1)
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li t2, MC_DC30_VALUE
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sw t2, MC_DC30(t1)
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li t2, MC_DC31_VALUE
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sw t2, MC_DC31(t1)
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li t2, MC_DC32_VALUE
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sw t2, MC_DC32(t1)
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li t2, MC_DC33_VALUE
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sw t2, MC_DC33(t1)
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li t2, MC_DC34_VALUE
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sw t2, MC_DC34(t1)
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li t2, MC_DC35_VALUE
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sw t2, MC_DC35(t1)
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li t2, MC_DC36_VALUE
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sw t2, MC_DC36(t1)
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li t2, MC_DC37_VALUE
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sw t2, MC_DC37(t1)
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li t2, MC_DC38_VALUE
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sw t2, MC_DC38(t1)
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li t2, MC_DC39_VALUE
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sw t2, MC_DC39(t1)
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li t2, MC_DC40_VALUE
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sw t2, MC_DC40(t1)
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li t2, MC_DC41_VALUE
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sw t2, MC_DC41(t1)
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li t2, MC_DC42_VALUE
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sw t2, MC_DC42(t1)
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li t2, MC_DC43_VALUE
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sw t2, MC_DC43(t1)
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li t2, MC_DC44_VALUE
|
|
sw t2, MC_DC44(t1)
|
|
|
|
li t2, MC_DC45_VALUE
|
|
sw t2, MC_DC45(t1)
|
|
|
|
li t2, MC_DC46_VALUE
|
|
sw t2, MC_DC46(t1)
|
|
|
|
li t2, 0x00000100
|
|
sw t2, MC_DC03(t1)
|
|
|
|
j ra
|
|
nop
|
|
|
|
.end ddrram_init
|
|
#endif /* CONFIG_USE_DDR_RAM */
|
|
|
|
.globl lowlevel_init
|
|
.ent lowlevel_init
|
|
lowlevel_init:
|
|
/* EBU, CGU and SDRAM/DDR-RAM Initialization.
|
|
*/
|
|
move t0, ra
|
|
/* We rely on the fact that non of the following ..._init() functions
|
|
* modify t0
|
|
*/
|
|
#if defined(CONFIG_SYS_EBU_BOOT)
|
|
/*
|
|
using PPL1 value
|
|
*/
|
|
li a0,0x90
|
|
bal cgu_init
|
|
nop
|
|
#endif /* CONFIG_SYS_EBU_BOOT */
|
|
|
|
bal ebu_init
|
|
nop
|
|
|
|
#ifdef CONFIG_SYS_EBU_BOOT
|
|
#ifndef CONFIG_SYS_RAMBOOT
|
|
#ifdef CONFIG_USE_DDR_RAM
|
|
bal ddrram_init
|
|
nop
|
|
#else
|
|
bal sdram_init
|
|
nop
|
|
#endif
|
|
#endif /* CONFIG_SYS_RAMBOOT */
|
|
#endif /* CONFIG_SYS_EBU_BOOT */
|
|
|
|
move ra, t0
|
|
j ra
|
|
nop
|
|
|
|
.end lowlevel_init
|