--- /dev/null
+/*
+ * Memory sub-system initialization code for Danube board.
+ * Andre Messerschmidt
+ * Copyright (c) 2005 Infineon Technologies AG
+ *
+ * Based on Inca-IP code
+ * Copyright (c) 2003 Wolfgang Denk <wd@denx.de>
+ *
+ * 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 0
+
+#if defined(CONFIG_USE_DDR_RAM)
+
+#if defined(CONFIG_USE_DDR_RAM_CFG_111M)
+#include "ddr_settings_r111.h"
+#define DDR111
+#elif defined(CONFIG_USE_DDR_RAM_CFG_166M)
+#include "ddr_settings_r166.h"
+#define DDR166
+#elif defined(CONFIG_USE_DDR_RAM_CFG_e111M)
+#include "ddr_settings_e111.h"
+#define DDR111
+#elif defined(CONFIG_USE_DDR_RAM_CFG_e166M)
+#include "ddr_settings_e166.h"
+#define DDR166
+#elif defined(CONFIG_USE_DDR_RAM_CFG_promos400)
+#include "ddr_settings_PROMOSDDR400.h"
+#define DDR166
+#elif defined(CONFIG_USE_DDR_RAM_CFG_samsung166)
+#include "ddr_settings_Samsung_166.h"
+#define DDR166
+#elif defined(CONFIG_USE_DDR_RAM_CFG_psc166)
+#include "ddr_settings_psc_166.h"
+#define DDR166
+#else
+#warning "missing definition for ddr_settings.h, use default!"
+#include "ddr_settings.h"
+#endif
+#endif /* CONFIG_USE_DDR_RAM */
+
+#else
+
+#include "ddr_settings.h"
+#define DDR166
+
+#endif
+
+#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)
+
+//05252006
+#define pll0_35MHz_CONFIG 0x9D861059
+#define pll1_35MHz_CONFIG 0x1A260CD9
+#define pll2_35MHz_CONFIG 0x8000f1e5
+#define pll0_36MHz_CONFIG 0x1000125D
+#define pll1_36MHz_CONFIG 0x1B1E0C99
+#define pll2_36MHz_CONFIG 0x8002f2a1
+//05252006
+
+//06063001-joelin disable the PCI CFRAME mask -start
+/*CFRAME is an I/O signal, in the chip, the output CFRAME is selected via GPIO altsel pins, so if you select MII1 RXD1, the CFRAME will not come out.
+But the CFRAME input still take the signal from the pad and not disabled when altsel choose other function. So when MII1_RXD1 is low from other device, the EBU interface will be disabled.
+
+The chip function in such a way that disable the CFRAME mask mean EBU not longer check CFRAME to be the device using the bus.
+The side effect is the entire PCI block will see CFRAME low all the time meaning PCI cannot use the bus at all so no more PCI function.
+*/
+#define PCI_CR_PR_OFFSET 0xBE105400
+#define PCI_CR_PCI_MOD_REG (PCI_CR_PR_OFFSET + 0x0030)
+#define PCI_CONFIG_SPACE 0xB7000000
+#define CS_CFM (PCI_CONFIG_SPACE + 0x6C)
+//06063001-joelin disable the PCI CFRAME mask -end
+ .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 t2, RCU_STS
+ lw t2, 0(t2)
+ and t2,0x00020000
+ beq t2,0x00020000,boot_36MHZ
+ nop
+//05252006
+ li t1, PLL0_CFG
+ li t2, pll0_35MHz_CONFIG
+ sw t2,0(t1)
+ li t1, PLL1_CFG
+ li t2, pll1_35MHz_CONFIG
+ sw t2,0(t1)
+ li t1, PLL2_CFG
+ li t2, pll2_35MHz_CONFIG
+ sw t2,0(t1)
+ li t1, CGU_SYS
+ sw a0,0(t1)
+ li t1, RCU_RST_REQ
+ li t2, 0x40000008
+ sw t2,0(t1)
+ b wait_reset
+ nop
+boot_36MHZ:
+ li t1, PLL0_CFG
+ li t2, pll0_36MHz_CONFIG
+ sw t2,0(t1)
+ li t1, PLL1_CFG
+ li t2, pll1_36MHz_CONFIG
+ sw t2,0(t1)
+ li t1, PLL2_CFG
+ li t2, pll2_36MHz_CONFIG
+ sw t2,0(t1)
+ li t1, CGU_SYS
+ sw a0,0(t1)
+ li t1, RCU_RST_REQ
+ li t2, 0x40000008
+ sw t2,0(t1)
+//05252006
+
+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)
+#if defined(DDR166)
+ /* 0xe8 means CPU0/CPU1 333M, DDR 167M, FPI 83M, PPE 240M */
+ li a0,0xe8
+#elif defined(DDR133)
+ /* 0xe9 means CPU0/CPU1 333M, DDR 133M, FPI 83M, PPE 240M */
+ li a0,0xe9
+#else /* defined(DDR111) */
+ /* 0xea means CPU0/CPU1 333M, DDR 111M, FPI 83M, PPE 240M */
+ li a0,0xea
+#endif
+ bal cgu_init
+ nop
+#endif /* CONFIG_SYS_EBU_BOOT */
+
+ bal ebu_init
+ nop
+
+//06063001-joelin disable the PCI CFRAME mask-start
+#ifdef DISABLE_CFRAME
+ li t1, PCI_CR_PCI //mw bf103034 80000000
+ li t2, 0x80000000
+ sw t2,0(t1)
+
+ li t1, PCI_CR_PCI_MOD_REG //mw be105430 103
+ li t2, 0x103
+ sw t2,0(t1)
+
+ li t1, CS_CFM //mw b700006c 0
+ li t2, 0x00
+ sw t2, 0(t1)
+
+ li t1, PCI_CR_PCI_MOD_REG //mw be105430 103
+ li t2, 0x1000103
+ sw t2, 0(t1)
+#endif
+//06063001-joelin disable the PCI CFRAME mask-end
+
+#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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