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Diffstat (limited to 'package/uboot-lantiq/files/board/infineon/easy50812/lowlevel_init.S')
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1 files changed, 543 insertions, 0 deletions
diff --git a/package/uboot-lantiq/files/board/infineon/easy50812/lowlevel_init.S b/package/uboot-lantiq/files/board/infineon/easy50812/lowlevel_init.S new file mode 100644 index 0000000000..58f7a16eae --- /dev/null +++ b/package/uboot-lantiq/files/board/infineon/easy50812/lowlevel_init.S @@ -0,0 +1,543 @@ +/* + * 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 |