diff options
Diffstat (limited to 'board/mpc7448hpc2')
| -rw-r--r-- | board/mpc7448hpc2/Makefile | 52 | ||||
| -rw-r--r-- | board/mpc7448hpc2/asm_init.S | 918 | ||||
| -rw-r--r-- | board/mpc7448hpc2/config.mk | 28 | ||||
| -rw-r--r-- | board/mpc7448hpc2/mpc7448hpc2.c | 107 | ||||
| -rw-r--r-- | board/mpc7448hpc2/tsi108_init.c | 665 | ||||
| -rw-r--r-- | board/mpc7448hpc2/u-boot.lds | 136 |
6 files changed, 1906 insertions, 0 deletions
diff --git a/board/mpc7448hpc2/Makefile b/board/mpc7448hpc2/Makefile new file mode 100644 index 0000000..e3d757d --- /dev/null +++ b/board/mpc7448hpc2/Makefile @@ -0,0 +1,52 @@ +# +# (C) Copyright 2000 +# Wolfgang Denk, DENX Software Engineering, 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 +# + +include $(TOPDIR)/config.mk + +LIB = $(obj)lib$(BOARD).a + +COBJS := $(BOARD).o tsi108_init.o +SOBJS := asm_init.o + +SRCS := $(SOBJS:.o=.S) $(COBJS:.o=.c) +OBJS := $(addprefix $(obj),$(COBJS)) +SOBJS := $(addprefix $(obj),$(SOBJS)) + +$(LIB): $(obj).depend $(OBJS) $(SOBJS) + $(AR) $(ARFLAGS) $@ $(OBJS) $(SOBJS) + +clean: + rm -f $(SOBJS) $(OBJS) + +.PHONY: distclean +distclean: clean + rm -f $(LIB) core *.bak .depend + +######################################################################### + +# defines $(obj).depend target +include $(SRCTREE)/rules.mk + +sinclude ($obj).depend + +######################################################################### diff --git a/board/mpc7448hpc2/asm_init.S b/board/mpc7448hpc2/asm_init.S new file mode 100644 index 0000000..a7a40a1 --- /dev/null +++ b/board/mpc7448hpc2/asm_init.S @@ -0,0 +1,918 @@ +/* + * (C) Copyright 2004-05; Tundra Semiconductor Corp. + * + * Added automatic detect of SDC settings + * Copyright (c) 2005 Freescale Semiconductor, Inc. + * Maintainer tie-fei.zang@freescale.com + * + * 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 + */ + +/* + * FILENAME: asm_init.s + * + * Originator: Alex Bounine + * + * DESCRIPTION: + * Initialization code for the Tundra Tsi108 bridge chip + * + */ + +#include <config.h> +#include <version.h> + +#include <ppc_asm.tmpl> +#include <ppc_defs.h> +#include <asm/processor.h> + +#include <tsi108.h> + +/* + * Build Configuration Options + */ + +/* #define DISABLE_PBM disables usage of PB Master */ +/* #define SDC_HARDCODED_INIT config SDRAM controller with hardcoded values */ +/* #define SDC_AUTOPRECH_EN enable SDRAM auto precharge */ + +/* + * Hardcoded SDC settings + */ + +#ifdef SDC_HARDCODED_INIT + +/* Micron MT9HTF6472AY-40EA1 : Unbuffered, 512MB, 400, CL3, Single Rank */ + +#define VAL_SD_REFRESH (0x61A) +#define VAL_SD_TIMING (0x0308336b) +#define VAL_SD_D0_CTRL (0x07100021) /* auto-precharge disabled */ +#define VAL_SD_D0_BAR (0x0FE00000) /* 512MB @ 0x00000000 */ +#define VAL_SD_D1_CTRL (0x07100021) /* auto-precharge disabled */ +#define VAL_SD_D1_BAR (0x0FE00200) /* 512MB @ 0x20000000 */ + +#endif /* SDC_HARDCODED_INIT */ + +/* + CPU Configuration: + + CPU Address and Data Parity enables. + +#define CPU_AP +#define CPU_DP +*/ + +/* + * Macros + * !!! Attention !!! Macros LOAD_PTR, LOAD_U32 and LOAD_MEM defined below are + * expected to work correctly for the CSR space within 32KB range. + * + * LOAD_PTR and LOAD_U32 - load specified register with a 32 bit constant. + * These macros are absolutely identical except their names. This difference + * is provided intentionally for better readable code. + */ + +#define LOAD_PTR(reg,const32) \ + addis reg,r0,const32@h; ori reg,reg,const32@l + +#define LOAD_U32(reg,const32) \ + addis reg,r0,const32@h; ori reg,reg,const32@l + +/* LOADMEM initializes a register with the contents of a specified 32-bit + * memory location, usually a CSR value. + */ + +#define LOAD_MEM(reg,addr32) \ + addis reg,r0,addr32@ha; lwz reg,addr32@l(reg) + +#ifndef SDC_HARDCODED_INIT +sdc_clk_sync: + /* MHz: 0,0,183,100,133,167,200,233 */ + .long 0, 0, 6, 10, 8, 6, 5, 4 /* nSec */ +#endif + +/* + * board_asm_init() - early initialization function. Coded to be portable to + * dual-CPU configuration. + * Checks CPU number and performs board HW initialization if called for CPU0. + * Registers used: r3,r4,r5,r6,r19,r29 + * + * NOTE: For dual-CPU configuration only CPU0 is allowed to configure Tsi108 + * and the rest of the board. Current implementation demonstrates two + * possible ways to identify CPU number: + * - for MPC74xx platform: uses MSSCR0[ID] bit as defined in UM. + * - for PPC750FX/GX boards: uses WHO_AM_I bit reported by Tsi108. + */ + + .globl board_asm_init +board_asm_init: + mflr r19 /* Save LR to be able return later. */ + bl icache_enable /* Enable icache to reduce reads from flash. */ + +/* Initialize pointer to Tsi108 register space */ + + LOAD_PTR(r29,CFG_TSI108_CSR_RST_BASE)/* r29 - pointer to tsi108 CSR space */ + ori r4,r29,TSI108_PB_REG_OFFSET + +/* Check Processor Version Number */ + + mfspr r3, PVR + rlwinm r3,r3,16,16,23 /* get ((Processor Version Number) & 0xFF00) */ + + cmpli 0,0,r3,0x8000 /* MPC74xx */ + bne cont_brd_init + + /* + * For MPC744x/5x enable extended BATs[4-7] + * Sri: Set HIGH_BAT_EN and XBSEN, and SPD =1 + * to disable prefetch + */ + + mfspr r5, HID0 + oris r5, r5, 0x0080 /* Set HID0[HIGH_BAT_EN] bit #8 */ + ori r5, r5, 0x0380 /* Set SPD,XBSEN,SGE bits #22,23,24 */ + mtspr HID0, r5 + isync + sync + + /* Adding code to disable external interventions in MPX bus mode */ + mfspr r3, 1014 + oris r3, r3, 0x0100 /* Set the EIDIS bit in MSSCR0: bit 7 */ + mtspr 1014, r3 + isync + sync + + /* Sri: code to enable FP unit */ + mfmsr r3 + ori r3, r3, 0x2000 + mtmsr r3 + isync + sync + + /* def CONFIG_DUAL_CPU + * For MPC74xx processor, use MSSCR0[ID] bit to identify CPU number. + */ +#if(1) + mfspr r3,1014 /* read MSSCR0 */ + rlwinm. r3,r3,27,31,31 /* get processor ID number */ + mtspr SPRN_PIR,r3 /* Save CPU ID */ + sync + bne init_done + b do_tsi108_init + +cont_brd_init: + + /* An alternative method of checking the processor number (in addition + * to configuration using MSSCR0[ID] bit on MPC74xx). + * Good for IBM PPC750FX/GX. + */ + + lwz r3,PB_BUS_MS_SELECT(r4) /* read PB_ID register */ + rlwinm. r3,r3,24,31,31 /* get processor ID number */ + bne init_done +#else + +cont_brd_init: + +#endif /* CONFIG_DUAL_CPU */ + + /* Initialize Tsi108 chip */ + +do_tsi108_init: + + /* + * Adjust HLP/Flash parameters. By default after reset the HLP port is + * set to support slow devices. Better performance can be achived when + * an optimal parameters are used for specific EPROM device. + * NOTE: This should be performed ASAP for the emulation platform + * because it has 5MHz HLP clocking. + */ + +#ifdef CONFIG_TSI108EMU + ori r4,r29,TSI108_HLP_REG_OFFSET + LOAD_U32(r5,0x434422c0) + stw r5,0x08(r4) /* set HLP B0_CTRL0 */ + sync + LOAD_U32(r5,0xd0012000) + stw r5,0x0c(r4) /* set HLP B0_CTRL1 */ + sync +#endif + + /* Initialize PB interface. */ + + ori r4,r29,TSI108_PB_REG_OFFSET + +#if (CFG_TSI108_CSR_BASE != CFG_TSI108_CSR_RST_BASE) + /* Relocate (if required) Tsi108 registers. Set new value for + * PB_REG_BAR: + * Note we are in the 32-bit address mode. + */ + LOAD_U32(r5,(CFG_TSI108_CSR_BASE | 0x01)) /* PB_REG_BAR: BA + EN */ + stw r5,PB_REG_BAR(r4) + andis. r29,r5,0xFFFF + sync + ori r4,r29,TSI108_PB_REG_OFFSET +#endif + + /* Set PB Slave configuration register */ + + LOAD_U32(r5,0x00002481) /* PB_SCR: TEA enabled,AACK delay = 1 */ + lwz r3, PB_RSR(r4) /* get PB bus mode */ + xori r3,r3,0x0001 /* mask PB_BMODE: r3 -> (0 = 60X, 1 = MPX) */ + rlwimi r5,r3,14,17,17 /* for MPX: set DTI_MODE bit */ + stw r5,PB_SCR(r4) + sync + + /* Configure PB Arbiter */ + + lwz r5,PB_ARB_CTRL(r4) /* Read PB Arbiter Control Register */ + li r3, 0x00F0 /* ARB_PIPELINE_DEP mask */ +#ifdef DISABLE_PBM + ori r3,r3,0x1000 /* add PBM_EN to clear (enabled by default) */ +#endif + andc r5,r5,r3 /* Clear the masked bit fields */ + ori r5,r5,0x0001 /* Set pipeline depth */ + stw r5,PB_ARB_CTRL(r4) + +#if (0) /* currently using the default settings for PBM after reset */ + LOAD_U32(r5,0x) /* value for PB_MCR */ + stw r5,PB_MCR(r4) + sync + + LOAD_U32(r5,0x) /* value for PB_MCMD */ + stw r5,PB_MCMD(r4) + sync +#endif + + /* Disable or enable PVT based on processor bus frequency + * 1. Read CG_PWRUP_STATUS register field bits 18,17,16 + * 2. See if the value is < or > 133mhz (18:16 = 100) + * 3. If > enable PVT + */ + + LOAD_U32(r3,0xC0002234) + lwz r3,0(r3) + rlwinm r3,r3,16,29,31 + + cmpi 0,0,r3,0x0004 + bgt sdc_init + +#ifndef CONFIG_TSI108EMU + /* FIXME: Disable PB calibration control for any real Tsi108 board */ + li r5,0x0101 /* disable calibration control */ + stw r5,PB_PVT_CTRL2(r4) + sync +#endif + + /* Initialize SDRAM controller. */ + +sdc_init: + +#ifndef SDC_HARDCODED_INIT + /* get SDC clock prior doing sdram controller autoconfig */ + ori r4,r29,TSI108_CLK_REG_OFFSET /* r4 - ptr to CG registers */ + lwz r3, CG_PWRUP_STATUS(r4) /* get CG configuration */ + rlwinm r3,r3,12,29,31 /* r3 - SD clk */ + lis r5,sdc_clk_sync@h + ori r5,r5,sdc_clk_sync@l + /* Sri: At this point check if r3 = 001. If yes, + * the memory frequency should be same as the + * MPX bus frequency + */ + cmpi 0,0,r3,0x0001 + bne get_nsec + lwz r6, CG_PWRUP_STATUS(r4) + rlwinm r6,r6,16,29,31 + mr r3,r6 + +get_nsec: + rlwinm r3,r3,2,0,31 + lwzx r9,r5,r3 /* get SD clk rate in nSec */ + /* ATTN: r9 will be used by SPD routine */ +#endif /* !SDC_HARDCODED_INIT */ + + ori r4,r29,TSI108_SD_REG_OFFSET /* r4 - ptr to SDRAM registers */ + + /* Initialize SDRAM controller. SDRAM Size = 512MB, One DIMM. */ + + LOAD_U32(r5,0x00) + stw r5,SD_INT_ENABLE(r4) /* Ensure that interrupts are disabled */ +#ifdef ENABLE_SDRAM_ECC + li r5, 0x01 +#endif /* ENABLE_SDRAM_ECC */ + stw r5,SD_ECC_CTRL(r4) /* Enable/Disable ECC */ + sync + +#ifdef SDC_HARDCODED_INIT /* config sdram controller with hardcoded values */ + + /* First read the CG_PWRUP_STATUS register to get the + * memory speed from bits 22,21,20 + */ + + LOAD_U32(r3,0xC0002234) + lwz r3,0(r3) + rlwinm r3,r3,12,29,31 + + /* Now first check for 166, then 200, or default */ + + cmpi 0,0,r3,0x0005 + bne check_for_200mhz + + /* set values for 166 Mhz memory speed + * Set refresh rate and timing parameters + */ + LOAD_U32(r5,0x00000515) + stw r5,SD_REFRESH(r4) + LOAD_U32(r5,0x03073368) + stw r5,SD_TIMING(r4) + sync + + /* Initialize DIMM0 control and BAR registers */ + LOAD_U32(r5,VAL_SD_D0_CTRL) /* auto-precharge disabled */ +#ifdef SDC_AUTOPRECH_EN + oris r5,r5,0x0001 /* set auto precharge EN bit */ +#endif + stw r5,SD_D0_CTRL(r4) + LOAD_U32(r5,VAL_SD_D0_BAR) + stw r5,SD_D0_BAR(r4) + sync + + /* Initialize DIMM1 control and BAR registers + * (same as dimm 0, next 512MB, disabled) + */ + LOAD_U32(r5,VAL_SD_D1_CTRL) /* auto-precharge disabled */ +#ifdef SDC_AUTOPRECH_EN + oris r5,r5,0x0001 /* set auto precharge EN bit */ +#endif + stw r5,SD_D1_CTRL(r4) + LOAD_U32(r5,VAL_SD_D1_BAR) + stw r5,SD_D1_BAR(r4) + sync + + b sdc_init_done + +check_for_200mhz: + + cmpi 0,0,r3,0x0006 + bne set_default_values + + /* set values for 200Mhz memory speed + * Set refresh rate and timing parameters + */ + LOAD_U32(r5,0x0000061a) + stw r5,SD_REFRESH(r4) + LOAD_U32(r5,0x03083348) + stw r5,SD_TIMING(r4) + sync + + /* Initialize DIMM0 control and BAR registers */ + LOAD_U32(r5,VAL_SD_D0_CTRL) /* auto-precharge disabled */ +#ifdef SDC_AUTOPRECH_EN + oris r5,r5,0x0001 /* set auto precharge EN bit */ +#endif + stw r5,SD_D0_CTRL(r4) + LOAD_U32(r5,VAL_SD_D0_BAR) + stw r5,SD_D0_BAR(r4) + sync + + /* Initialize DIMM1 control and BAR registers + * (same as dimm 0, next 512MB, disabled) + */ + LOAD_U32(r5,VAL_SD_D1_CTRL) /* auto-precharge disabled */ +#ifdef SDC_AUTOPRECH_EN + oris r5,r5,0x0001 /* set auto precharge EN bit */ +#endif + stw r5,SD_D1_CTRL(r4) + LOAD_U32(r5,VAL_SD_D1_BAR) + stw r5,SD_D1_BAR(r4) + sync + + b sdc_init_done + +set_default_values: + + /* Set refresh rate and timing parameters */ + LOAD_U32(r5,VAL_SD_REFRESH) + stw r5,SD_REFRESH(r4) + LOAD_U32(r5,VAL_SD_TIMING) + stw r5,SD_TIMING(r4) + sync + + /* Initialize DIMM0 control and BAR registers */ + LOAD_U32(r5,VAL_SD_D0_CTRL) /* auto-precharge disabled */ +#ifdef SDC_AUTOPRECH_EN + oris r5,r5,0x0001 /* set auto precharge EN bit */ +#endif + stw r5,SD_D0_CTRL(r4) + LOAD_U32(r5,VAL_SD_D0_BAR) + stw r5,SD_D0_BAR(r4) + sync + + /* Initialize DIMM1 control and BAR registers + * (same as dimm 0, next 512MB, disabled) + */ + LOAD_U32(r5,VAL_SD_D1_CTRL) /* auto-precharge disabled */ +#ifdef SDC_AUTOPRECH_EN + oris r5,r5,0x0001 /* set auto precharge EN bit */ +#endif + stw r5,SD_D1_CTRL(r4) + LOAD_U32(r5,VAL_SD_D1_BAR) + stw r5,SD_D1_BAR(r4) + sync +#else /* !SDC_HARDCODED_INIT */ + bl tsi108_sdram_spd /* automatically detect SDC settings */ +#endif /* SDC_HARDCODED_INIT */ + +sdc_init_done: + +#ifdef DISABLE_PBM + LOAD_U32(r5,0x00000030) /* PB_EN + OCN_EN */ +#else + LOAD_U32(r5,0x00000230) /* PB_EN + OCN_EN + PB/OCN=80/20 */ +#endif /* DISABLE_PBM */ + +#ifdef CONFIG_TSI108EMU + oris r5,r5,0x0010 /* set EMULATION_MODE bit */ +#endif + + stw r5,SD_CTRL(r4) + eieio + sync + + /* Enable SDRAM access */ + + oris r5,r5,0x8000 /* start SDC: set SD_CTRL[ENABLE] bit */ + stw r5,SD_CTRL(r4) + sync + +wait_init_complete: + lwz r5,SD_STATUS(r4) + andi. r5,r5,0x0001 + /* wait until SDRAM initialization is complete */ + beq wait_init_complete + + /* Map SDRAM into the processor bus address space */ + + ori r4,r29,TSI108_PB_REG_OFFSET + + /* Setup BARs associated with direct path PB<->SDRAM */ + + /* PB_SDRAM_BAR1: + * provides a direct path to the main system memory (cacheable SDRAM) + */ + + /* BA=0,Size=512MB, ENable, No Addr.Translation */ + LOAD_U32(r5, 0x00000011) + stw r5,PB_SDRAM_BAR1(r4) + sync + + /* Make sure that PB_SDRAM_BAR1 decoder is set + * (to allow following immediate read from SDRAM) + */ + lwz r5,PB_SDRAM_BAR1(r4) + sync + + /* PB_SDRAM_BAR2: + * provides non-cacheable alias (via the direct path) to main + * system memory. + * Size = 512MB, ENable, Addr.Translation - ON, + * BA = 0x0_40000000, TA = 0x0_00000000 + */ + + LOAD_U32(r5, 0x40010011) + stw r5,PB_SDRAM_BAR2(r4) + sync + + /* Make sure that PB_SDRAM_BAR2 decoder is set + * (to allow following immediate read from SDRAM) + */ + lwz r5,PB_SDRAM_BAR2(r4) + sync + +init_done: + + /* All done. Restore LR and return. */ + mtlr r19 + blr + +#if (0) + /* + * init_cpu1 + * This routine enables CPU1 on the dual-processor system. + * Now there is only one processor in the system + */ + + .global enable_cpu1 +enable_cpu1: + + lis r3,Tsi108_Base@ha /* Get Grendel CSR Base Addr */ + addi r3,r3,Tsi108_Base@l + lwz r3,0(r3) /* R3 = CSR Base Addr */ + ori r4,r3,TSI108_PB_REG_OFFSET + lwz r3,PB_ARB_CTRL(r4) /* Read PB Arbiter Control Register */ + ori r3,r3,0x0200 /* Set M1_EN bit */ + stw r3,PB_ARB_CTRL(r4) + + blr +#endif + + /* + * enable_EI + * Enable CPU core external interrupt + */ + + .global enable_EI +enable_EI: + mfmsr r3 + ori r3,r3,0x8000 /* set EE bit */ + mtmsr r3 + blr + + /* + * disable_EI + * Disable CPU core external interrupt + */ + + .global disable_EI +disable_EI: + mfmsr r3 + li r4,-32768 /* aka "li r4,0x8000" */ + andc r3,r3,r4 /* clear EE bit */ + mtmsr r3 + blr + +#ifdef ENABLE_SDRAM_ECC + /* enables SDRAM ECC */ + + .global enable_ECC +enable_ECC: + ori r4,r29,TSI108_SD_REG_OFFSET + lwz r3,SD_ECC_CTRL(r4) /* Read SDRAM ECC Control Register */ + ori r3,r3,0x0001 /* Set ECC_EN bit */ + stw r3,SD_ECC_CTRL(r4) + blr + + /* + * clear_ECC_err + * Clears all pending SDRAM ECC errors + * (normally after SDRAM scrubbing/initialization) + */ + + .global clear_ECC_err +clear_ECC_err: + ori r4,r29,TSI108_SD_REG_OFFSET + ori r3,r0,0x0030 /* ECC_UE_INT + ECC_CE_INT bits */ + stw r3,SD_INT_STATUS(r4) + blr + +#endif /* ENABLE_SDRAM_ECC */ + +#ifndef SDC_HARDCODED_INIT + + /* SDRAM SPD Support */ +#define SD_I2C_CTRL1 (0x400) +#define SD_I2C_CTRL2 (0x404) +#define SD_I2C_RD_DATA (0x408) +#define SD_I2C_WR_DATA (0x40C) + + /* + * SDRAM SPD Support Macros + */ + +#define SPD_DIMM0 (0x00000100) +#define SPD_DIMM1 (0x00000200) /* SPD_DIMM1 was 0x00000000 */ + +#define SPD_RDIMM (0x01) +#define SPD_UDIMM (0x02) + +#define SPD_CAS_3 0x8 +#define SPD_CAS_4 0x10 +#define SPD_CAS_5 0x20 + +#define ERR_NO_DIMM_FOUND (0xdb0) +#define ERR_TRAS_FAIL (0xdb1) +#define ERR_TRCD_FAIL (0xdb2) +#define ERR_TRP_FAIL (0xdb3) +#define ERR_TWR_FAIL (0xdb4) +#define ERR_UNKNOWN_PART (0xdb5) +#define ERR_NRANK_INVALID (0xdb6) +#define ERR_DIMM_SIZE (0xdb7) +#define ERR_ADDR_MODE (0xdb8) +#define ERR_RFRSH_RATE (0xdb9) +#define ERR_DIMM_TYPE (0xdba) +#define ERR_CL_VALUE (0xdbb) +#define ERR_TRFC_FAIL (0xdbc) + +/* READ_SPD requirements: + * byte - byte address in SPD device (0 - 255) + * r3 = will return data read from I2C Byte location + * r4 - unchanged (SDC base addr) + * r5 - clobbered in routine (I2C status) + * r10 - number of DDR slot where first SPD device is detected + */ + +#define READ_SPD(byte_num) \ + addis r3, 0, byte_num@l; \ + or r3, r3, r10; \ + ori r3, r3, 0x0A; \ + stw r3, SD_I2C_CTRL1(r4); \ + li r3, I2C_CNTRL2_START; \ + stw r3, SD_I2C_CTRL2(r4); \ + eieio; \ + sync; \ + li r3, 0x100; \ +1:; \ + addic. r3, r3, -1; \ + bne 1b; \ +2:; \ + lwz r5, SD_I2C_CTRL2(r4); \ + rlwinm. r3,r5,0,23,23; \ + bne 2b; \ + rlwinm. r3,r5,0,3,3; \ + lwz r3,SD_I2C_RD_DATA(r4) + +#define SPD_MIN_RFRSH (0x80) +#define SPD_MAX_RFRSH (0x85) + +refresh_rates: /* in nSec */ + .long 15625 /* Normal (0x80) */ + .long 3900 /* Reduced 0.25x (0x81) */ + .long 7800 /* Reduced 0.5x (0x82) */ + .long 31300 /* Extended 2x (0x83) */ + .long 62500 /* Extended 4x (0x84) */ + .long 125000 /* Extended 8x (0x85) */ + +/* + * tsi108_sdram_spd + * + * Inittializes SDRAM Controller using DDR2 DIMM Serial Presence Detect data + * Uses registers: r4 - SDC base address (not changed) + * r9 - SDC clocking period in nSec + * Changes registers: r3,r5,r6,r7,r8,r10,r11 + */ + +tsi108_sdram_spd: + + li r10,SPD_DIMM0 + xor r11,r11,r11 /* DIMM Base Address: starts from 0 */ + +do_first_dimm: + + /* Program Refresh Rate Register */ + + READ_SPD(12) /* get Refresh Rate */ + beq check_next_slot + li r5, ERR_RFRSH_RATE + cmpi 0,0,r3,SPD_MIN_RFRSH + ble spd_fail + cmpi 0,0,r3,SPD_MAX_RFRSH + bgt spd_fail + addi r3,r3,-SPD_MIN_RFRSH + rlwinm r3,r3,2,0,31 + lis r5,refresh_rates@h + ori r5,r5,refresh_rates@l + lwzx r5,r5,r3 /* get refresh rate in nSec */ + divwu r5,r5,r9 /* calculate # of SDC clocks */ + stw r5,SD_REFRESH(r4) /* Set refresh rate */ + sync + + /* Program SD Timing Register */ + + li r7, 0 /* clear r7 prior parameter collection */ + + READ_SPD(20) /* get DIMM type: Registered or Unbuffered */ + beq spd_read_fail + li r5, ERR_DIMM_TYPE + cmpi 0,0,r3,SPD_UDIMM + beq do_cl + cmpi 0,0,r3,SPD_RDIMM + bne spd_fail + oris r7,r7,0x1000 /* set SD_TIMING[DIMM_TYPE] bit */ + +do_cl: + READ_SPD(18) /* Get CAS Latency */ + beq spd_read_fail + li r5,ERR_CL_VALUE + andi. r6,r3,SPD_CAS_3 + beq cl_4 + li r6,3 + b set_cl +cl_4: + andi. r6,r3,SPD_CAS_4 + beq cl_5 + li r6,4 + b set_cl +cl_5: + andi. r6,r3,SPD_CAS_5 + beq spd_fail + li r6,5 +set_cl: + rlwimi r7,r6,24,5,7 + + READ_SPD(30) /* Get tRAS */ + beq spd_read_fail + divwu r6,r3,r9 + mullw r8,r6,r9 + subf. r8,r8,r3 + beq set_tras + addi r6,r6,1 +set_tras: + li r5,ERR_TRAS_FAIL + cmpi 0,0,r6,0x0F /* max supported value */ + bgt spd_fail + rlwimi r7,r6,16,12,15 + + READ_SPD(29) /* Get tRCD */ + beq spd_read_fail + /* right shift tRCD by 2 bits as per DDR2 spec */ + rlwinm r3,r3,30,2,31 + divwu r6,r3,r9 + mullw r8,r6,r9 + subf. r8,r8,r3 + beq set_trcd + addi r6,r6,1 +set_trcd: + li r5,ERR_TRCD_FAIL + cmpi 0,0,r6,0x07 /* max supported value */ + bgt spd_fail + rlwimi r7,r6,12,17,19 + + READ_SPD(27) /* Get tRP value */ + beq spd_read_fail + rlwinm r3,r3,30,2,31 /* right shift tRP by 2 bits as per DDR2 spec */ + divwu r6,r3,r9 + mullw r8,r6,r9 + subf. r8,r8,r3 + beq set_trp + addi r6,r6,1 +set_trp: + li r5,ERR_TRP_FAIL + cmpi 0,0,r6,0x07 /* max supported value */ + bgt spd_fail + rlwimi r7,r6,8,21,23 + + READ_SPD(36) /* Get tWR value */ + beq spd_read_fail + rlwinm r3,r3,30,2,31 /* right shift tWR by 2 bits as per DDR2 spec */ + divwu r6,r3,r9 + mullw r8,r6,r9 + subf. r8,r8,r3 + beq set_twr + addi r6,r6,1 +set_twr: + addi r6,r6,-1 /* Tsi108 SDC always gives one extra clock */ + li r5,ERR_TWR_FAIL + cmpi 0,0,r6,0x07 /* max supported value */ + bgt spd_fail + rlwimi r7,r6,5,24,26 + + READ_SPD(42) /* Get tRFC */ + beq spd_read_fail + li r5, ERR_TRFC_FAIL + /* Tsi108 spec: tRFC=(tRFC + 1)/2 */ + addi r3,r3,1 + rlwinm. r3,r3,31,1,31 /* divide by 2 */ + beq spd_fail + divwu r6,r3,r9 + mullw r8,r6,r9 + subf. r8,r8,r3 + beq set_trfc + addi r6,r6,1 +set_trfc: + cmpi 0,0,r6,0x1F /* max supported value */ + bgt spd_fail + rlwimi r7,r6,0,27,31 + + stw r7,SD_TIMING(r4) + sync + + /* + * The following two registers are set on per-DIMM basis. + * The SD_REFRESH and SD_TIMING settings are common for both DIMMS + */ + +do_each_dimm: + + /* Program SDRAM DIMM Control Register */ + + li r7, 0 /* clear r7 prior parameter collection */ + + READ_SPD(13) /* Get Primary SDRAM Width */ + beq spd_read_fail + cmpi 0,0,r3,4 /* Check for 4-bit SDRAM */ + beq do_nbank + oris r7,r7,0x0010 /* Set MEM_WIDTH bit */ + +do_nbank: + READ_SPD(17) /* Get Number of banks on SDRAM device */ + beq spd_read_fail + /* Grendel only distinguish betw. 4 or 8-bank memory parts */ + li r5,ERR_UNKNOWN_PART /* non-supported memory part */ + cmpi 0,0,r3,4 + beq do_nrank + cmpi 0,0,r3,8 + bne spd_fail + ori r7,r7,0x1000 + +do_nrank: + READ_SPD(5) /* Get # of Ranks */ + beq spd_read_fail + li r5,ERR_NRANK_INVALID + andi. r6,r3,0x7 /* Use bits [2..0] only */ + beq do_addr_mode + cmpi 0,0,r6,1 + bgt spd_fail + rlwimi r7,r6,8,23,23 + +do_addr_mode: + READ_SPD(4) /* Get # of Column Addresses */ + beq spd_read_fail + li r5, ERR_ADDR_MODE + andi. r3,r3,0x0f /* cut off reserved bits */ + cmpi 0,0,r3,8 + ble spd_fail + cmpi 0,0,r3,15 + bgt spd_fail + addi r6,r3,-8 /* calculate ADDR_MODE parameter */ + rlwimi r7,r6,4,24,27 /* set ADDR_MODE field */ + +set_dimm_ctrl: +#ifdef SDC_AUTOPRECH_EN + oris r7,r7,0x0001 /* set auto precharge EN bit */ +#endif + ori r7,r7,1 /* set ENABLE bit */ + cmpi 0,0,r10,SPD_DIMM0 + bne 1f + stw r7,SD_D0_CTRL(r4) + sync + b set_dimm_bar +1: + stw r7,SD_D1_CTRL(r4) + sync + + + /* Program SDRAM DIMMx Base Address Register */ + +set_dimm_bar: + READ_SPD(5) /* get # of Ranks */ + beq spd_read_fail + andi. r7,r3,0x7 + addi r7,r7,1 + READ_SPD(31) /* Read DIMM rank density */ + beq spd_read_fail + rlwinm r5,r3,27,29,31 + rlwinm r6,r3,3,24,28 + or r5,r6,r5 /* r5 = Normalized Rank Density byte */ + lis r8, 0x0080 /* 128MB >> 4 */ + mullw r8,r8,r5 /* r8 = (rank_size >> 4) */ + mullw r8,r8,r7 /* r8 = (DIMM_size >> 4) */ + neg r7,r8 + rlwinm r7,r7,28,4,31 + or r7,r7,r11 /* set ADDR field */ + rlwinm r8,r8,12,20,31 + add r11,r11,r8 /* set Base Addr for next DIMM */ + + cmpi 0,0,r10,SPD_DIMM0 + bne set_dimm1_size + stw r7,SD_D0_BAR(r4) + sync + li r10,SPD_DIMM1 + READ_SPD(0) + bne do_each_dimm + b spd_done + +set_dimm1_size: + stw r7,SD_D1_BAR(r4) + sync +spd_done: + blr + +check_next_slot: + cmpi 0,0,r10,SPD_DIMM1 + beq spd_read_fail + li r10,SPD_DIMM1 + b do_first_dimm +spd_read_fail: + ori r3,r0,0xdead + b err_hung +spd_fail: + li r3,0x0bad + sync +err_hung: /* hang here for debugging */ + nop + nop + b err_hung + +#endif /* !SDC_HARDCODED_INIT */ diff --git a/board/mpc7448hpc2/config.mk b/board/mpc7448hpc2/config.mk new file mode 100644 index 0000000..2e58858 --- /dev/null +++ b/board/mpc7448hpc2/config.mk @@ -0,0 +1,28 @@ +# +# Copyright (c) 2005 Freescale Semiconductor, Inc. +# +# 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 +# + +# Flash address +TEXT_BASE = 0xFF000000 +# RAM address +#TEXT_BASE = 0x00400000 + +PLATFORM_CPPFLAGS += -DTEXT_BASE=$(TEXT_BASE) -maltivec -mabi=altivec -msoft-float diff --git a/board/mpc7448hpc2/mpc7448hpc2.c b/board/mpc7448hpc2/mpc7448hpc2.c new file mode 100644 index 0000000..d4a047c --- /dev/null +++ b/board/mpc7448hpc2/mpc7448hpc2.c @@ -0,0 +1,107 @@ +/* + * (C) Copyright 2005 Freescale Semiconductor, Inc. + * + * Roy Zang <tie-fei.zang@freescale.com> + * + * 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 + * + * modifications for the Tsi108 Emul Board by avb@Tundra + */ + +/* + * board support/init functions for the + * Freescale MPC7448 HPC2 (High-Performance Computing 2 Platform). + */ + +#include <common.h> +#include <74xx_7xx.h> +#if defined(CONFIG_OF_FLAT_TREE) +#include <ft_build.h> +extern void ft_cpu_setup (void *blob, bd_t *bd); +#endif + +#undef DEBUG + +extern void flush_data_cache (void); +extern void invalidate_l1_instruction_cache (void); +extern void tsi108_init_f (void); + +int display_mem_map (void); + +void after_reloc (ulong dest_addr) +{ + DECLARE_GLOBAL_DATA_PTR; + + /* + * Jump to the main U-Boot board init code + */ + board_init_r ((gd_t *) gd, dest_addr); + /* NOTREACHED */ +} + +/* + * Check Board Identity: + * report board type + */ + +int checkboard (void) +{ + int l_type = 0; + + printf ("BOARD: %s\n", CFG_BOARD_NAME); + return (l_type); +} + +/* + * Read Processor ID: + * + * report calling processor number + */ + +int read_pid (void) +{ + return 0; /* we are on single CPU platform for a while */ +} + +long int dram_size (int board_type) +{ + return 0x20000000; /* 256M bytes */ +} + +long int initdram (int board_type) +{ + return dram_size (board_type); +} + +#if defined(CONFIG_OF_FLAT_TREE) && defined(CONFIG_OF_BOARD_SETUP) +void +ft_board_setup (void *blob, bd_t *bd) +{ + u32 *p; + int len; + + ft_cpu_setup (blob, bd); + + p = ft_get_prop (blob, "/memory/reg", &len); + if (p != NULL) { + *p++ = cpu_to_be32 (bd->bi_memstart); + *p = cpu_to_be32 (bd->bi_memsize); + } +} +#endif diff --git a/board/mpc7448hpc2/tsi108_init.c b/board/mpc7448hpc2/tsi108_init.c new file mode 100644 index 0000000..e3b09cf --- /dev/null +++ b/board/mpc7448hpc2/tsi108_init.c @@ -0,0 +1,665 @@ +/***************************************************************************** + * (C) Copyright 2003; Tundra Semiconductor Corp. + * + * 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 + *****************************************************************************/ + +/*---------------------------------------------------------------------------- + * FILENAME: tsi108_init.c + * + * Originator: Alex Bounine + * + * DESCRIPTION: + * Initialization code for the Tundra Tsi108 bridge chip + *---------------------------------------------------------------------------*/ + +#include <common.h> +#include <74xx_7xx.h> +#include <config.h> +#include <version.h> +#include <asm/processor.h> +#include <tsi108.h> + +extern void mpicInit (int verbose); + +/* + * Configuration Options + */ + +typedef struct { + ulong upper; + ulong lower; +} PB2OCN_LUT_ENTRY; + +PB2OCN_LUT_ENTRY pb2ocn_lut1[32] = { + /* 0 - 7 */ + {0x00000000, 0x00000201}, /* PBA=0xE000_0000 -> PCI/X (Byte-Swap) */ + {0x00000000, 0x00000201}, /* PBA=0xE100_0000 -> PCI/X (Byte-Swap) */ + {0x00000000, 0x00000201}, /* PBA=0xE200_0000 -> PCI/X (Byte-Swap) */ + {0x00000000, 0x00000201}, /* PBA=0xE300_0000 -> PCI/X (Byte-Swap) */ + {0x00000000, 0x00000201}, /* PBA=0xE400_0000 -> PCI/X (Byte-Swap) */ + {0x00000000, 0x00000201}, /* PBA=0xE500_0000 -> PCI/X (Byte-Swap) */ + {0x00000000, 0x00000201}, /* PBA=0xE600_0000 -> PCI/X (Byte-Swap) */ + {0x00000000, 0x00000201}, /* PBA=0xE700_0000 -> PCI/X (Byte-Swap) */ + + /* 8 - 15 */ + {0x00000000, 0x00000201}, /* PBA=0xE800_0000 -> PCI/X (Byte-Swap) */ + {0x00000000, 0x00000201}, /* PBA=0xE900_0000 -> PCI/X (Byte-Swap) */ + {0x00000000, 0x00000201}, /* PBA=0xEA00_0000 -> PCI/X (Byte-Swap) */ + {0x00000000, 0x00000201}, /* PBA=0xEB00_0000 -> PCI/X (Byte-Swap) */ + {0x00000000, 0x00000201}, /* PBA=0xEC00_0000 -> PCI/X (Byte-Swap) */ + {0x00000000, 0x00000201}, /* PBA=0xED00_0000 -> PCI/X (Byte-Swap) */ + {0x00000000, 0x00000201}, /* PBA=0xEE00_0000 -> PCI/X (Byte-Swap) */ + {0x00000000, 0x00000201}, /* PBA=0xEF00_0000 -> PCI/X (Byte-Swap) */ + + /* 16 - 23 */ + {0x00000000, 0x00000201}, /* PBA=0xF000_0000 -> PCI/X (Byte-Swap) */ + {0x00000000, 0x00000201}, /* PBA=0xF100_0000 -> PCI/X (Byte-Swap) */ + {0x00000000, 0x00000201}, /* PBA=0xF200_0000 -> PCI/X (Byte-Swap) */ + {0x00000000, 0x00000201}, /* PBA=0xF300_0000 -> PCI/X (Byte-Swap) */ + {0x00000000, 0x00000201}, /* PBA=0xF400_0000 -> PCI/X (Byte-Swap) */ + {0x00000000, 0x00000201}, /* PBA=0xF500_0000 -> PCI/X (Byte-Swap) */ + {0x00000000, 0x00000201}, /* PBA=0xF600_0000 -> PCI/X (Byte-Swap) */ + {0x00000000, 0x00000201}, /* PBA=0xF700_0000 -> PCI/X (Byte-Swap) */ + /* 24 - 31 */ + {0x00000000, 0x00000201}, /* PBA=0xF800_0000 -> PCI/X (Byte-Swap) */ + {0x00000000, 0x00000201}, /* PBA=0xF900_0000 -> PCI/X (Byte-Swap) */ + {0x00000000, 0x00000201}, /* PBA=0xFA00_0000 -> PCI/X PCI I/O (Byte-Swap) */ + {0x00000000, 0x00000201}, /* PBA=0xFB00_0000 -> PCI/X PCI Config (Byte-Swap) */ + + {0x00000000, 0x02000240}, /* PBA=0xFC00_0000 -> HLP */ + {0x00000000, 0x01000240}, /* PBA=0xFD00_0000 -> HLP */ + {0x00000000, 0x03000240}, /* PBA=0xFE00_0000 -> HLP */ + {0x00000000, 0x00000240} /* PBA=0xFF00_0000 -> HLP : (Translation Enabled + Byte-Swap)*/ +}; + +#ifdef CFG_CLK_SPREAD +typedef struct { + ulong ctrl0; + ulong ctrl1; +} PLL_CTRL_SET; + +/* + * Clock Generator SPLL0 initialization values + * PLL0 configuration table for various PB_CLKO freq. + * Uses pre-calculated values for Fs = 30 kHz, D = 0.5% + * Fout depends on required PB_CLKO. Based on Fref = 33 MHz + */ + +static PLL_CTRL_SET pll0_config[8] = { + {0x00000000, 0x00000000}, /* 0: bypass */ + {0x00000000, 0x00000000}, /* 1: reserved */ + {0x00430044, 0x00000043}, /* 2: CG_PB_CLKO = 183 MHz */ + {0x005c0044, 0x00000039}, /* 3: CG_PB_CLKO = 100 MHz */ + {0x005c0044, 0x00000039}, /* 4: CG_PB_CLKO = 133 MHz */ + {0x004a0044, 0x00000040}, /* 5: CG_PB_CLKO = 167 MHz */ + {0x005c0044, 0x00000039}, /* 6: CG_PB_CLKO = 200 MHz */ + {0x004f0044, 0x0000003e} /* 7: CG_PB_CLKO = 233 MHz */ +}; +#endif /* CFG_CLK_SPREAD */ + +/* + * Prosessor Bus Clock (in MHz) defined by CG_PB_SELECT + * (based on recommended Tsi108 reference clock 33MHz) + */ +static int pb_clk_sel[8] = { 0, 0, 183, 100, 133, 167, 200, 233 }; + +/* + * get_board_bus_clk () + * + * returns the bus clock in Hz. + */ +unsigned long get_board_bus_clk (void) +{ + ulong i; + + /* Detect PB clock freq. */ + i = in32(CFG_TSI108_CSR_BASE + TSI108_CLK_REG_OFFSET + CG_PWRUP_STATUS); + i = (i >> 16) & 0x07; /* Get PB PLL multiplier */ + + return pb_clk_sel[i] * 1000000; +} + +/* + * board_early_init_f () + * + * board-specific initialization executed from flash + */ + +int board_early_init_f (void) +{ + DECLARE_GLOBAL_DATA_PTR; + ulong i; + + gd->mem_clk = 0; + i = in32 (CFG_TSI108_CSR_BASE + TSI108_CLK_REG_OFFSET + + CG_PWRUP_STATUS); + i = (i >> 20) & 0x07; /* Get GD PLL multiplier */ + switch (i) { + case 0: /* external clock */ + printf ("Using external clock\n"); + break; + case 1: /* system clock */ + gd->mem_clk = gd->bus_clk; + break; + case 4: /* 133 MHz */ + case 5: /* 166 MHz */ + case 6: /* 200 MHz */ + gd->mem_clk = pb_clk_sel[i] * 1000000; + break; + default: + printf ("Invalid DDR2 clock setting\n"); + return -1; + } + printf ("BUS: %d MHz\n", get_board_bus_clk() / 1000000); + printf ("MEM: %d MHz\n", gd->mem_clk / 1000000); + return 0; +} + +/* + * board_early_init_r() - Tsi108 initialization function executed right after + * relocation. Contains code that cannot be executed from flash. + */ + +int board_early_init_r (void) +{ + ulong temp, i; + ulong reg_val; + volatile ulong *reg_ptr; + + reg_ptr = + (ulong *) (CFG_TSI108_CSR_BASE + TSI108_PB_REG_OFFSET + 0x900); + + for (i = 0; i < 32; i++) { + *reg_ptr++ = 0x00000201; /* SWAP ENABLED */ + *reg_ptr++ = 0x00; + } + + __asm__ __volatile__ ("eieio"); + __asm__ __volatile__ ("sync"); + + /* Setup PB_OCN_BAR2: size 256B + ENable @ 0x0_80000000 */ + + out32 (CFG_TSI108_CSR_BASE + TSI108_PB_REG_OFFSET + PB_OCN_BAR2, + 0x80000001); + __asm__ __volatile__ ("sync"); + + /* Make sure that OCN_BAR2 decoder is set (to allow following immediate + * read from SDRAM) + */ + + temp = in32(CFG_TSI108_CSR_BASE + TSI108_PB_REG_OFFSET + PB_OCN_BAR2); + __asm__ __volatile__ ("sync"); + + /* + * Remap PB_OCN_BAR1 to accomodate PCI-bus aperture and EPROM into the + * processor bus address space. Immediately after reset LUT and address + * translation are disabled for this BAR. Now we have to initialize LUT + * and switch from the BOOT mode to the normal operation mode. + * + * The aperture defined by PB_OCN_BAR1 startes at address 0xE0000000 + * and covers 512MB of address space. To allow larger aperture we also + * have to relocate register window of Tsi108 + * + * Initialize LUT (32-entries) prior switching PB_OCN_BAR1 from BOOT + * mode. + * + * initialize pointer to LUT associated with PB_OCN_BAR1 + */ + reg_ptr = + (ulong *) (CFG_TSI108_CSR_BASE + TSI108_PB_REG_OFFSET + 0x800); + + for (i = 0; i < 32; i++) { + *reg_ptr++ = pb2ocn_lut1[i].lower; + *reg_ptr++ = pb2ocn_lut1[i].upper; + } + + __asm__ __volatile__ ("sync"); + + /* Base addresses for CS0, CS1, CS2, CS3 */ + + out32 (CFG_TSI108_CSR_BASE + TSI108_HLP_REG_OFFSET + HLP_B0_ADDR, + 0x00000000); + __asm__ __volatile__ ("sync"); + + out32 (CFG_TSI108_CSR_BASE + TSI108_HLP_REG_OFFSET + HLP_B1_ADDR, + 0x00100000); + __asm__ __volatile__ ("sync"); + + out32 (CFG_TSI108_CSR_BASE + TSI108_HLP_REG_OFFSET + HLP_B2_ADDR, + 0x00200000); + __asm__ __volatile__ ("sync"); + + out32 (CFG_TSI108_CSR_BASE + TSI108_HLP_REG_OFFSET + HLP_B3_ADDR, + 0x00300000); + __asm__ __volatile__ ("sync"); + + /* Masks for HLP banks */ + + out32 (CFG_TSI108_CSR_BASE + TSI108_HLP_REG_OFFSET + HLP_B0_MASK, + 0xFFF00000); + __asm__ __volatile__ ("sync"); + + out32 (CFG_TSI108_CSR_BASE + TSI108_HLP_REG_OFFSET + HLP_B1_MASK, + 0xFFF00000); + __asm__ __volatile__ ("sync"); + + out32 (CFG_TSI108_CSR_BASE + TSI108_HLP_REG_OFFSET + HLP_B2_MASK, + 0xFFF00000); + __asm__ __volatile__ ("sync"); + + out32 (CFG_TSI108_CSR_BASE + TSI108_HLP_REG_OFFSET + HLP_B3_MASK, + 0xFFF00000); + __asm__ __volatile__ ("sync"); + + /* Set CTRL0 values for banks */ + + out32 (CFG_TSI108_CSR_BASE + TSI108_HLP_REG_OFFSET + HLP_B0_CTRL0, + 0x7FFC44C2); + __asm__ __volatile__ ("sync"); + + out32 (CFG_TSI108_CSR_BASE + TSI108_HLP_REG_OFFSET + HLP_B1_CTRL0, + 0x7FFC44C0); + __asm__ __volatile__ ("sync"); + + out32 (CFG_TSI108_CSR_BASE + TSI108_HLP_REG_OFFSET + HLP_B2_CTRL0, + 0x7FFC44C0); + __asm__ __volatile__ ("sync"); + + out32 (CFG_TSI108_CSR_BASE + TSI108_HLP_REG_OFFSET + HLP_B3_CTRL0, + 0x7FFC44C2); + __asm__ __volatile__ ("sync"); + + /* Set banks to latched mode, enabled, and other default settings */ + + out32 (CFG_TSI108_CSR_BASE + TSI108_HLP_REG_OFFSET + HLP_B0_CTRL1, + 0x7C0F2000); + __asm__ __volatile__ ("sync"); + + out32 (CFG_TSI108_CSR_BASE + TSI108_HLP_REG_OFFSET + HLP_B1_CTRL1, + 0x7C0F2000); + __asm__ __volatile__ ("sync"); + + out32 (CFG_TSI108_CSR_BASE + TSI108_HLP_REG_OFFSET + HLP_B2_CTRL1, + 0x7C0F2000); + __asm__ __volatile__ ("sync"); + + out32 (CFG_TSI108_CSR_BASE + TSI108_HLP_REG_OFFSET + HLP_B3_CTRL1, + 0x7C0F2000); + __asm__ __volatile__ ("sync"); + + /* + * Set new value for PB_OCN_BAR1: switch from BOOT to LUT mode. + * value for PB_OCN_BAR1: (BA-0xE000_0000 + size 512MB + ENable) + */ + out32 (CFG_TSI108_CSR_BASE + TSI108_PB_REG_OFFSET + PB_OCN_BAR1, + 0xE0000011); + __asm__ __volatile__ ("sync"); + + /* Make sure that OCN_BAR2 decoder is set (to allow following + * immediate read from SDRAM) + */ + + temp = in32(CFG_TSI108_CSR_BASE + TSI108_PB_REG_OFFSET + PB_OCN_BAR1); + __asm__ __volatile__ ("sync"); + + /* + * SRI: At this point we have enabled the HLP banks. That means we can + * now read from the NVRAM and initialize the environment variables. + * We will over-ride the env_init called in board_init_f + * This is really a work-around because, the HLP bank 1 + * where NVRAM resides is not visible during board_init_f + * (lib_ppc/board.c) + * Alternatively, we could use the I2C EEPROM at start-up to configure + * and enable all HLP banks and not just HLP 0 as is being done for + * Taiga Rev. 2. + */ + + env_init (); + +#ifndef DISABLE_PBM + + /* + * For IBM processors we have to set Address-Only commands generated + * by PBM that are different from ones set after reset. + */ + + temp = get_cpu_type (); + + if ((CPU_750FX == temp) || (CPU_750GX == temp)) + out32 (CFG_TSI108_CSR_BASE + TSI108_PB_REG_OFFSET + PB_MCMD, + 0x00009955); +#endif /* DISABLE_PBM */ + +#ifdef CONFIG_PCI + /* + * Initialize PCI/X block + */ + + /* Map PCI/X Configuration Space (16MB @ 0x0_FE000000) */ + out32 (CFG_TSI108_CSR_BASE + TSI108_PCI_REG_OFFSET + + PCI_PFAB_BAR0_UPPER, 0); + __asm__ __volatile__ ("sync"); + + out32 (CFG_TSI108_CSR_BASE + TSI108_PCI_REG_OFFSET + PCI_PFAB_BAR0, + 0xFB000001); + __asm__ __volatile__ ("sync"); + + /* Set Bus Number for the attached PCI/X bus (we will use 0 for NB) */ + + temp = in32(CFG_TSI108_CSR_BASE + + TSI108_PCI_REG_OFFSET + PCI_PCIX_STAT); + + temp &= ~0xFF00; /* Clear the BUS_NUM field */ + + out32 (CFG_TSI108_CSR_BASE + TSI108_PCI_REG_OFFSET + PCI_PCIX_STAT, + temp); + + /* Map PCI/X IO Space (64KB @ 0x0_FD000000) takes one 16MB LUT entry */ + + out32 (CFG_TSI108_CSR_BASE + TSI108_PCI_REG_OFFSET + PCI_PFAB_IO_UPPER, + 0); + __asm__ __volatile__ ("sync"); + + /* This register is on the PCI side to interpret the address it receives + * and maps it as a IO address. + */ + + out32 (CFG_TSI108_CSR_BASE + TSI108_PCI_REG_OFFSET + PCI_PFAB_IO, + 0xFA000001); + __asm__ __volatile__ ("sync"); + + /* + * Map PCI/X Memory Space + * + * Transactions directed from OCM to PCI Memory Space are directed + * from PB to PCI + * unchanged (as defined by PB_OCN_BAR1,2 and LUT settings). + * If address remapping is required the corresponding PCI_PFAB_MEM32 + * and PCI_PFAB_PFMx register groups have to be configured. + * + * Map the path from the PCI/X bus into the system memory + * + * The memory mapped window assotiated with PCI P2O_BAR2 provides + * access to the system memory without address remapping. + * All system memory is opened for accesses initiated by PCI/X bus + * masters. + * + * Initialize LUT associated with PCI P2O_BAR2 + * + * set pointer to LUT associated with PCI P2O_BAR2 + */ + + reg_ptr = + (ulong *) (CFG_TSI108_CSR_BASE + TSI108_PCI_REG_OFFSET + 0x500); + +#ifdef DISABLE_PBM + + /* In case when PBM is disabled (no HW supported cache snoopng on PB) + * P2O_BAR2 is directly mapped into the system memory without address + * translation. + */ + + reg_val = 0x00000004; /* SDRAM port + NO Addr_Translation */ + + for (i = 0; i < 32; i++) { + *reg_ptr++ = reg_val; /* P2O_BAR2_LUTx */ + *reg_ptr++ = 0; /* P2O_BAR2_LUT_UPPERx */ + } + + /* value for PCI BAR2 (size = 512MB, Enabled, No Addr. Translation) */ + reg_val = 0x00007500; +#else + + reg_val = 0x00000002; /* Destination port = PBM */ + + for (i = 0; i < 32; i++) { + *reg_ptr++ = reg_val; /* P2O_BAR2_LUTx */ +/* P2O_BAR2_LUT_UPPERx : Set data swapping mode for PBM (byte swapping) */ + *reg_ptr++ = 0x40000000; +/* offset = 16MB, address translation is enabled to allow byte swapping */ + reg_val += 0x01000000; + } + +/* value for PCI BAR2 (size = 512MB, Enabled, Address Translation Enabled) */ + reg_val = 0x00007100; +#endif + + __asm__ __volatile__ ("eieio"); + __asm__ __volatile__ ("sync"); + + out32 (CFG_TSI108_CSR_BASE + TSI108_PCI_REG_OFFSET + PCI_P2O_PAGE_SIZES, + reg_val); + __asm__ __volatile__ ("sync"); + + /* Set 64-bit PCI bus address for system memory + * ( 0 is the best choice for easy mapping) + */ + + out32 (CFG_TSI108_CSR_BASE + TSI108_PCI_REG_OFFSET + PCI_P2O_BAR2, + 0x00000000); + out32 (CFG_TSI108_CSR_BASE + TSI108_PCI_REG_OFFSET + PCI_P2O_BAR2_UPPER, + 0x00000000); + __asm__ __volatile__ ("sync"); + +#ifndef DISABLE_PBM + /* + * The memory mapped window assotiated with PCI P2O_BAR3 provides + * access to the system memory using SDRAM OCN port and address + * translation. This is alternative way to access SDRAM from PCI + * required for Tsi108 emulation testing. + * All system memory is opened for accesses initiated by + * PCI/X bus masters. + * + * Initialize LUT associated with PCI P2O_BAR3 + * + * set pointer to LUT associated with PCI P2O_BAR3 + */ + reg_ptr = + (ulong *) (CFG_TSI108_CSR_BASE + TSI108_PCI_REG_OFFSET + 0x600); + + reg_val = 0x00000004; /* Destination port = SDC */ + + for (i = 0; i < 32; i++) { + *reg_ptr++ = reg_val; /* P2O_BAR3_LUTx */ + +/* P2O_BAR3_LUT_UPPERx : Set data swapping mode for PBM (byte swapping) */ + *reg_ptr++ = 0; + +/* offset = 16MB, address translation is enabled to allow byte swapping */ + reg_val += 0x01000000; + } + + __asm__ __volatile__ ("eieio"); + __asm__ __volatile__ ("sync"); + + /* Configure PCI P2O_BAR3 (size = 512MB, Enabled) */ + + reg_val = + in32(CFG_TSI108_CSR_BASE + TSI108_PCI_REG_OFFSET + + PCI_P2O_PAGE_SIZES); + reg_val &= ~0x00FF; + reg_val |= 0x0071; + out32 (CFG_TSI108_CSR_BASE + TSI108_PCI_REG_OFFSET + PCI_P2O_PAGE_SIZES, + reg_val); + __asm__ __volatile__ ("sync"); + + /* Set 64-bit base PCI bus address for window (0x20000000) */ + + out32 (CFG_TSI108_CSR_BASE + TSI108_PCI_REG_OFFSET + PCI_P2O_BAR3_UPPER, + 0x00000000); + out32 (CFG_TSI108_CSR_BASE + TSI108_PCI_REG_OFFSET + PCI_P2O_BAR3, + 0x20000000); + __asm__ __volatile__ ("sync"); + +#endif /* !DISABLE_PBM */ + +#ifdef ENABLE_PCI_CSR_BAR + /* open if required access to Tsi108 CSRs from the PCI/X bus */ + /* enable BAR0 on the PCI/X bus */ + reg_val = in32(CFG_TSI108_CSR_BASE + + TSI108_PCI_REG_OFFSET + PCI_MISC_CSR); + reg_val |= 0x02; + out32 (CFG_TSI108_CSR_BASE + TSI108_PCI_REG_OFFSET + PCI_MISC_CSR, + reg_val); + __asm__ __volatile__ ("sync"); + + out32 (CFG_TSI108_CSR_BASE + TSI108_PCI_REG_OFFSET + PCI_P2O_BAR0_UPPER, + 0x00000000); + out32 (CFG_TSI108_CSR_BASE + TSI108_PCI_REG_OFFSET + PCI_P2O_BAR0, + CFG_TSI108_CSR_BASE); + __asm__ __volatile__ ("sync"); + +#endif + + /* + * Finally enable PCI/X Bus Master and Memory Space access + */ + + reg_val = in32(CFG_TSI108_CSR_BASE + TSI108_PCI_REG_OFFSET + PCI_CSR); + reg_val |= 0x06; + out32 (CFG_TSI108_CSR_BASE + TSI108_PCI_REG_OFFSET + PCI_CSR, reg_val); + __asm__ __volatile__ ("sync"); + +#endif /* CONFIG_PCI */ + + /* + * Initialize MPIC outputs (interrupt pins): + * Interrupt routing on the Grendel Emul. Board: + * PB_INT[0] -> INT (CPU0) + * PB_INT[1] -> INT (CPU1) + * PB_INT[2] -> MCP (CPU0) + * PB_INT[3] -> MCP (CPU1) + * Set interrupt controller outputs as Level_Sensitive/Active_Low + */ + out32 (CFG_TSI108_CSR_BASE + TSI108_MPIC_REG_OFFSET + MPIC_CSR(0), 0x02); + out32 (CFG_TSI108_CSR_BASE + TSI108_MPIC_REG_OFFSET + MPIC_CSR(1), 0x02); + out32 (CFG_TSI108_CSR_BASE + TSI108_MPIC_REG_OFFSET + MPIC_CSR(2), 0x02); + out32 (CFG_TSI108_CSR_BASE + TSI108_MPIC_REG_OFFSET + MPIC_CSR(3), 0x02); + __asm__ __volatile__ ("sync"); + + /* + * Ensure that Machine Check exception is enabled + * We need it to support PCI Bus probing (configuration reads) + */ + + reg_val = mfmsr (); + mtmsr(reg_val | MSR_ME); + + return 0; +} + +/* + * Needed to print out L2 cache info + * used in the misc_init_r function + */ + +unsigned long get_l2cr (void) +{ + unsigned long l2controlreg; + asm volatile ("mfspr %0, 1017":"=r" (l2controlreg):); + return l2controlreg; +} + +/* + * misc_init_r() + * + * various things to do after relocation + * + */ + +int misc_init_r (void) +{ + DECLARE_GLOBAL_DATA_PTR; +#ifdef CFG_CLK_SPREAD /* Initialize Spread-Spectrum Clock generation */ + ulong i; + + /* Ensure that Spread-Spectrum is disabled */ + out32 (CFG_TSI108_CSR_BASE + TSI108_CLK_REG_OFFSET + CG_PLL0_CTRL0, 0); + out32 (CFG_TSI108_CSR_BASE + TSI108_CLK_REG_OFFSET + CG_PLL1_CTRL0, 0); + + /* Initialize PLL1: CG_PCI_CLK , internal OCN_CLK + * Uses pre-calculated value for Fout = 800 MHz, Fs = 30 kHz, D = 0.5% + */ + + out32 (CFG_TSI108_CSR_BASE + TSI108_CLK_REG_OFFSET + CG_PLL1_CTRL0, + 0x002e0044); /* D = 0.25% */ + out32 (CFG_TSI108_CSR_BASE + TSI108_CLK_REG_OFFSET + CG_PLL1_CTRL1, + 0x00000039); /* BWADJ */ + + /* Initialize PLL0: CG_PB_CLKO */ + /* Detect PB clock freq. */ + i = in32(CFG_TSI108_CSR_BASE + TSI108_CLK_REG_OFFSET + CG_PWRUP_STATUS); + i = (i >> 16) & 0x07; /* Get PB PLL multiplier */ + + out32 (CFG_TSI108_CSR_BASE + + TSI108_CLK_REG_OFFSET + CG_PLL0_CTRL0, pll0_config[i].ctrl0); + out32 (CFG_TSI108_CSR_BASE + + TSI108_CLK_REG_OFFSET + CG_PLL0_CTRL1, pll0_config[i].ctrl1); + + /* Wait and set SSEN for both PLL0 and 1 */ + udelay (1000); + out32 (CFG_TSI108_CSR_BASE + TSI108_CLK_REG_OFFSET + CG_PLL1_CTRL0, + 0x802e0044); /* D=0.25% */ + out32 (CFG_TSI108_CSR_BASE + + TSI108_CLK_REG_OFFSET + CG_PLL0_CTRL0, + 0x80000000 | pll0_config[i].ctrl0); +#endif /* CFG_CLK_SPREAD */ + +#ifdef CFG_L2 + l2cache_enable (); +#endif + printf ("BUS: %d MHz\n", gd->bus_clk / 1000000); + printf ("MEM: %d MHz\n", gd->mem_clk / 1000000); + + /* + * All the information needed to print the cache details is avaiblable + * at this point i.e. above call to l2cache_enable is the very last + * thing done with regards to enabling diabling the cache. + * So this seems like a good place to print all this information + */ + + printf ("CACHE: "); + switch (get_cpu_type()) { + case CPU_7447A: + printf ("L1 Instruction cache - 32KB 8-way"); + (get_hid0 () & (1 << 15)) ? printf (" ENABLED\n") : + printf (" DISABLED\n"); + printf ("L1 Data cache - 32KB 8-way"); + (get_hid0 () & (1 << 14)) ? printf (" ENABLED\n") : + printf (" DISABLED\n"); + printf ("Unified L2 cache - 512KB 8-way"); + (get_l2cr () & (1 << 31)) ? printf (" ENABLED\n") : + printf (" DISABLED\n"); + printf ("\n"); + break; + + case CPU_7448: + printf ("L1 Instruction cache - 32KB 8-way"); + (get_hid0 () & (1 << 15)) ? printf (" ENABLED\n") : + printf (" DISABLED\n"); + printf ("L1 Data cache - 32KB 8-way"); + (get_hid0 () & (1 << 14)) ? printf (" ENABLED\n") : + printf (" DISABLED\n"); + printf ("Unified L2 cache - 1MB 8-way"); + (get_l2cr () & (1 << 31)) ? printf (" ENABLED\n") : + printf (" DISABLED\n"); + break; + default: + break; + } + return 0; +} diff --git a/board/mpc7448hpc2/u-boot.lds b/board/mpc7448hpc2/u-boot.lds new file mode 100644 index 0000000..8f24213 --- /dev/null +++ b/board/mpc7448hpc2/u-boot.lds @@ -0,0 +1,136 @@ +/* + * (C) Copyright 2001 + * Josh Huber <huber@mclx.com>, Mission Critical Linux, Inc. + * + * 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 + */ + +/* + * u-boot.lds - linker script for U-Boot on mpc7448hpc2 Board. + */ + +OUTPUT_ARCH(powerpc) +SEARCH_DIR(/lib); SEARCH_DIR(/usr/lib); SEARCH_DIR(/usr/local/lib); SEARCH_DIR(/usr/local/powerpc-any-elf/lib); +/* Do we need any of these for elf? + __DYNAMIC = 0; */ +SECTIONS +{ + /* Read-only sections, merged into text segment: */ + . = + SIZEOF_HEADERS; + .interp : { *(.interp) } + .hash : { *(.hash) } + .dynsym : { *(.dynsym) } + .dynstr : { *(.dynstr) } + .rel.text : { *(.rel.text) } + .rela.text : { *(.rela.text) } + .rel.data : { *(.rel.data) } + .rela.data : { *(.rela.data) } + .rel.rodata : { *(.rel.rodata) } + .rela.rodata : { *(.rela.rodata) } + .rel.got : { *(.rel.got) } + .rela.got : { *(.rela.got) } + .rel.ctors : { *(.rel.ctors) } + .rela.ctors : { *(.rela.ctors) } + .rel.dtors : { *(.rel.dtors) } + .rela.dtors : { *(.rela.dtors) } + .rel.bss : { *(.rel.bss) } + .rela.bss : { *(.rela.bss) } + .rel.plt : { *(.rel.plt) } + .rela.plt : { *(.rela.plt) } + .init : { *(.init) } + .plt : { *(.plt) } + .text : + { + cpu/74xx_7xx/start.o (.text) + +/* store the environment in a seperate sector in the boot flash */ +/* . = env_offset; */ +/* common/environment.o(.text) */ + + *(.text) + *(.fixup) + *(.got1) + } + _etext = .; + PROVIDE (etext = .); + .rodata : + { + *(.rodata) + *(.rodata1) + *(.rodata.str1.4) + } + .fini : { *(.fini) } =0 + .ctors : { *(.ctors) } + .dtors : { *(.dtors) } + + /* Read-write section, merged into data segment: */ + . = (. + 0x00FF) & 0xFFFFFF00; + _erotext = .; + PROVIDE (erotext = .); + .reloc : + { + *(.got) + _GOT2_TABLE_ = .; + *(.got2) + _FIXUP_TABLE_ = .; + *(.fixup) + } + __got2_entries = (_FIXUP_TABLE_ - _GOT2_TABLE_) >>2; + __fixup_entries = (. - _FIXUP_TABLE_)>>2; + + .data : + { + *(.data) + *(.data1) + *(.sdata) + *(.sdata2) + *(.dynamic) + CONSTRUCTORS + } + _edata = .; + PROVIDE (edata = .); + + . = .; + __u_boot_cmd_start = .; + .u_boot_cmd : { *(.u_boot_cmd) } + __u_boot_cmd_end = .; + + . = .; + __start___ex_table = .; + __ex_table : { *(__ex_table) } + __stop___ex_table = .; + + . = ALIGN(256); + __init_begin = .; + .text.init : { *(.text.init) } + .data.init : { *(.data.init) } + . = ALIGN(256); + __init_end = .; + + __bss_start = .; + .bss : + { + *(.sbss) *(.scommon) + *(.dynbss) + *(.bss) + *(COMMON) + } + _end = . ; + PROVIDE (end = .); +} |