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