diff options
Diffstat (limited to 'src/northbridge/intel')
| -rw-r--r-- | src/northbridge/intel/i440lx/Kconfig | 23 | ||||
| -rw-r--r-- | src/northbridge/intel/i440lx/Makefile.inc | 25 | ||||
| -rw-r--r-- | src/northbridge/intel/i440lx/i440lx.h | 72 | ||||
| -rw-r--r-- | src/northbridge/intel/i440lx/northbridge.c | 137 | ||||
| -rw-r--r-- | src/northbridge/intel/i440lx/northbridge.h | 26 | ||||
| -rw-r--r-- | src/northbridge/intel/i440lx/raminit.c | 453 | ||||
| -rw-r--r-- | src/northbridge/intel/i440lx/raminit.h | 28 |
7 files changed, 0 insertions, 764 deletions
diff --git a/src/northbridge/intel/i440lx/Kconfig b/src/northbridge/intel/i440lx/Kconfig deleted file mode 100644 index b087774b45..0000000000 --- a/src/northbridge/intel/i440lx/Kconfig +++ /dev/null @@ -1,23 +0,0 @@ -## -## This file is part of the coreboot project. -## -## Copyright (C) 2009 Uwe Hermann <uwe@hermann-uwe.de> -## -## 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; version 2 of the License. -## -## 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. -## - -config NORTHBRIDGE_INTEL_I440LX - bool - select HAVE_DEBUG_RAM_SETUP - select LATE_CBMEM_INIT diff --git a/src/northbridge/intel/i440lx/Makefile.inc b/src/northbridge/intel/i440lx/Makefile.inc deleted file mode 100644 index 2e1e2ceea0..0000000000 --- a/src/northbridge/intel/i440lx/Makefile.inc +++ /dev/null @@ -1,25 +0,0 @@ -## -## This file is part of the coreboot project. -## -## Copyright (C) 2009 Uwe Hermann <uwe@hermann-uwe.de> -## -## 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. -## - -ifeq ($(CONFIG_NORTHBRIDGE_INTEL_I440LX),y) - -ramstage-y += northbridge.c - -endif diff --git a/src/northbridge/intel/i440lx/i440lx.h b/src/northbridge/intel/i440lx/i440lx.h deleted file mode 100644 index a0cd746589..0000000000 --- a/src/northbridge/intel/i440lx/i440lx.h +++ /dev/null @@ -1,72 +0,0 @@ -/* - * This file is part of the coreboot project. - * - * Copyright (C) 2006 Uwe Hermann <uwe@hermann-uwe.de> - * Copyright (C) 2009 Maciej Pijanka <maciej.pijanka@gmail.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. - */ - -/* - * Datasheet: - * - Name: Intel 440LX AGPset: 82443LX Host Bridge/Controller - * - PDF: 29056402.pdf - */ - -/* - * Host-to-PCI Bridge Registers. - * The values in parenthesis are the default values as per datasheet. - * Any addresses between 0x00 and 0xff not listed below are either - * - * i didnt listed every register that IS implemented, just usefull ones - * -- Maciej `agaran` Pijanka - * - * Reserved or Intel Reserved and should not be touched. - */ -#define APBASE 0x34 /* Aperture Base Address (0x00000008) */ -#define PACCFG 0x50 /* 440LX PAC Configuration Register (0s00_s000_0000_0s00b) */ -#define DBC 0x53 /* DRAM Row Type Register (0x83) */ -#define DRT 0x55 /* DRAM Row Type Register (0x0000) */ -#define DRAMC 0x57 /* DRAM Control (0x01) */ -#define DRAMT 0x58 /* DRAM Timing (0x00) */ -#define PAM 0x59 /* Programmable Attribute Map, 7 registers (0x00). */ -#define DRB 0x60 /* DRAM Row Boundary, 8 registers (0x01). */ -#define FDHC 0x68 /* Fixed SDRAM Hole Control (0x00). */ -#define DRAMXC 0x6A /* Dram Extended Control Register (0x0000) */ -#define MBSC 0x6C /* Memory Buffer Strength Control: (0x55555555) */ - -#define SMRAM 0x72 /* System Management RAM Control (0x02). */ -#define ERRCMD 0x90 /* Error Command Register (0x80). */ -#define ERRSTS0 0x91 /* Error Status (0x0000). */ -#define ERRSTS1 0x92 /* Error Status (0x0000). */ -// TODO: AGP stuff. - -/* For convenience: */ -#define DRB0 0x60 -#define DRB1 0x61 -#define DRB2 0x62 -#define DRB3 0x63 -#define DRB4 0x64 -#define DRB5 0x65 -#define DRB6 0x66 -#define DRB7 0x67 - -#define PAM0 0x59 -#define PAM1 0x5a -#define PAM2 0x5b -#define PAM3 0x5c -#define PAM4 0x5d -#define PAM5 0x5e -#define PAM6 0x5f diff --git a/src/northbridge/intel/i440lx/northbridge.c b/src/northbridge/intel/i440lx/northbridge.c deleted file mode 100644 index 5135d0323b..0000000000 --- a/src/northbridge/intel/i440lx/northbridge.c +++ /dev/null @@ -1,137 +0,0 @@ -/* - * This file is part of the coreboot project. - * - * Copyright (C) 2007 Uwe Hermann <uwe@hermann-uwe.de> - * Copyright (C) 2009 Maciej Pijanka <maciej.pijanka@gmail.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. - */ - -#include <console/console.h> -#include <arch/io.h> -#include <stdint.h> -#include <device/device.h> -#include <device/pci.h> -#include <device/pci_ids.h> -#include <stdlib.h> -#include <string.h> -#include <cbmem.h> -#include <cpu/cpu.h> -#include <pc80/keyboard.h> -#include "northbridge.h" -#include "i440lx.h" - -/* This code is mostly same as 440BX created by Uwe Hermann, - * i done only very minor changes like renamed functions to 440lx etc - * Maciej - */ - -static void northbridge_init(device_t dev) -{ - printk(BIOS_SPEW, "Northbridge Init\n"); -} - -static struct device_operations northbridge_operations = { - .read_resources = pci_dev_read_resources, - .set_resources = pci_dev_set_resources, - .enable_resources = pci_dev_enable_resources, - .init = northbridge_init, - .enable = 0, - .ops_pci = 0, -}; - -static const struct pci_driver northbridge_driver __pci_driver = { - .ops = &northbridge_operations, - .vendor = PCI_VENDOR_ID_INTEL, - .device = 0x7180, -}; - -static void i440lx_domain_set_resources(device_t dev) -{ - device_t mc_dev; - uint32_t pci_tolm; - - pci_tolm = find_pci_tolm(dev->link_list); - mc_dev = dev->link_list->children; - if (mc_dev) { - unsigned long tomk, tolmk; - int idx; - - /* Figure out which areas are/should be occupied by RAM. The - * value of the highest DRB denotes the end of the physical - * memory (in units of 8MB). - */ - tomk = ((unsigned long)pci_read_config8(mc_dev, DRB7)); - - /* Convert to KB. */ - tomk *= (8 * 1024); - - printk(BIOS_DEBUG, "Setting RAM size to %lu MB\n", tomk / 1024); - - /* Compute the top of low memory. */ - tolmk = pci_tolm / 1024; - - if (tolmk >= tomk) { - /* The PCI hole does not overlap the memory. */ - tolmk = tomk; - } - - /* Report the memory regions. */ - idx = 10; - ram_resource(dev, idx++, 0, 640); - ram_resource(dev, idx++, 768, tolmk - 768); - - set_top_of_ram(tomk * 1024); - } - assign_resources(dev->link_list); -} - -static struct device_operations pci_domain_ops = { - .read_resources = pci_domain_read_resources, - .set_resources = i440lx_domain_set_resources, - .enable_resources = NULL, - .init = NULL, - .scan_bus = pci_domain_scan_bus, - .ops_pci_bus = pci_bus_default_ops, -}; - -static void cpu_bus_init(device_t dev) -{ - initialize_cpus(dev->link_list); -} - -static struct device_operations cpu_bus_ops = { - .read_resources = DEVICE_NOOP, - .set_resources = DEVICE_NOOP, - .enable_resources = DEVICE_NOOP, - .init = cpu_bus_init, - .scan_bus = 0, -}; - -static void enable_dev(struct device *dev) -{ - /* Set the operations if it is a special bus type */ - if (dev->path.type == DEVICE_PATH_DOMAIN) { - dev->ops = &pci_domain_ops; - } - else if (dev->path.type == DEVICE_PATH_CPU_CLUSTER) { - dev->ops = &cpu_bus_ops; - } -} - -struct chip_operations northbridge_intel_i440lx_ops = { - CHIP_NAME("Intel 82443LX (440LX) Northbridge") - .enable_dev = enable_dev, -}; diff --git a/src/northbridge/intel/i440lx/northbridge.h b/src/northbridge/intel/i440lx/northbridge.h deleted file mode 100644 index 12bec8f5f8..0000000000 --- a/src/northbridge/intel/i440lx/northbridge.h +++ /dev/null @@ -1,26 +0,0 @@ -/* - * This file is part of the coreboot project. - * - * Copyright (C) 2009 Maciej Pijanka <maciej.pijanka@gmail.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. - */ - -#ifndef NORTHBRIDGE_INTEL_440LX_H -#define NORTHBRIDGE_INTEL_440LX_H - -extern unsigned int i440lx_scan_root_bus(device_t root, unsigned int max); - -#endif /* NORTHBRIDGE_INTEL_440LX_H */ diff --git a/src/northbridge/intel/i440lx/raminit.c b/src/northbridge/intel/i440lx/raminit.c deleted file mode 100644 index fc19d9163d..0000000000 --- a/src/northbridge/intel/i440lx/raminit.c +++ /dev/null @@ -1,453 +0,0 @@ -/* - * This file is part of the coreboot project. - * - * Copyright (C) 2007-2008 Uwe Hermann <uwe@hermann-uwe.de> - * Copyright (C) 2009 Maciej Pijanka <maciej.pijanka@gmail.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. - */ - -#include <spd.h> -#include <delay.h> -#include <stdlib.h> -#include "i440lx.h" - -/*----------------------------------------------------------------------------- -Macros and definitions. ------------------------------------------------------------------------------*/ - -/* Uncomment this to enable debugging output. */ - -/* Debugging macros. */ -#if CONFIG_DEBUG_RAM_SETUP -#define PRINT_DEBUG(x) printk(BIOS_DEBUG, x) -#define PRINT_DEBUG_HEX8(x) printk(BIOS_DEBUG, "%02x", x) -#define PRINT_DEBUG_HEX16(x) printk(BIOS_DEBUG, "%04x", x) -#define PRINT_DEBUG_HEX32(x) printk(BIOS_DEBUG, "%08x", x) -#define DUMPNORTH() dump_pci_device(PCI_DEV(0, 0, 0)) -#else -#define PRINT_DEBUG(x) -#define PRINT_DEBUG_HEX8(x) -#define PRINT_DEBUG_HEX16(x) -#define PRINT_DEBUG_HEX32(x) -#define DUMPNORTH() -#endif - -#define NB PCI_DEV(0, 0, 0) - -/* DRAMXC[7:5] - DRAM extended control register (SMS). */ -#define RAM_COMMAND_NORMAL 0x0 -#define RAM_COMMAND_NOP 0x1 // (NOPCE) -#define RAM_COMMAND_PRECHARGE 0x2 // ABPCE -#define RAM_COMMAND_MRS 0x3 // MRSCE -#define RAM_COMMAND_CBR 0x4 // CBRC -// rest are reserved - -/* Table format: register, bitmask, value. */ -static const long register_values[] = { - // ~0x02 == bit 9 - // 0x04 == bit 10 - // BASE is 0x8A but we dont want bit 9 or 10 have ENABLED so 0x8C - PACCFG + 1, 0x38, 0x8c, - - DBC, 0x00, 0xC3, - - DRT, 0x00, 0xFF, - DRT+1, 0x00, 0xFF, - - DRAMC, 0x00, 0x00, /* disable refresh for now. */ - DRAMT, 0x00, 0x00, - - PAM0, 0x00, 0x30, // everything is a mem - PAM1, 0x00, 0x33, - PAM2, 0x00, 0x33, - PAM3, 0x00, 0x33, - PAM4, 0x00, 0x33, - PAM5, 0x00, 0x33, - PAM6, 0x00, 0x33, - - /* Set the DRBs to zero for now, this will be fixed later. */ - DRB0, 0x00, 0x00, - DRB1, 0x00, 0x00, - DRB2, 0x00, 0x00, - DRB3, 0x00, 0x00, - DRB4, 0x00, 0x00, - DRB5, 0x00, 0x00, - DRB6, 0x00, 0x00, - DRB7, 0x00, 0x00, - - /* No memory holes. */ - FDHC, 0x00, 0x00, -}; - -/*----------------------------------------------------------------------------- -SDRAM configuration functions. ------------------------------------------------------------------------------*/ - -/** - * Send the specified RAM command to all DIMMs. - * - * @param command The RAM command to send to the DIMM(s). - */ -static void do_ram_command(u32 command) -{ - int i, caslatency; - u8 dimm_start, dimm_end; - u16 reg16; - u32 addr, addr_offset; - - /* Configure the RAM command. */ - reg16 = pci_read_config16(NB, DRAMXC); - reg16 &= 0xff1f; /* Clear bits 7-5. */ - reg16 |= (u16) (command << 5); /* Write command into bits 7-5. */ - pci_write_config16(NB, DRAMXC, reg16); - - /* - * RAM_COMMAND_NORMAL affects only the memory controller and - * doesn't need to be "sent" to the DIMMs. - */ - if (command == RAM_COMMAND_NORMAL) - return; - - /* Send the RAM command to each row of memory. */ - dimm_start = 0; - for (i = 0; i < (DIMM_SOCKETS * 2); i++) { - addr_offset = 0; - caslatency = 3; /* TODO: Dynamically get CAS latency later. */ - - /* before translation it is - * - * M[02:00] Burst Length - * M[03:03] Burst Type - * M[06:04] Cas Latency - * 000 - Reserved - * 001 - Reserved - * 010 - CAS 2 - * 011 - CAS 3 - * 100 - Reserved - * 101 - Reserved - * 110 - Reserved - * 111 - Reserved - * M[08:07] Op Mode - * Must Be 00b (Defined mode) - * M[09:09] Write Burst Mode - * 0 - Programmed burst length - * 1 - Single location access - * M[11:10] Reserved - * write 0 to ensure compatibility with.... - */ - - /* seems constructed value will be right shifted by 3 bit, thus constructed value - * must be left shifted by 3 - * so possible formula is (caslatency <<4)|(burst_type << 1)|(burst length) - * then << 3 shift to compensate shift in Memory Controller - */ - if (command == RAM_COMMAND_MRS) { - if (caslatency == 3) - addr_offset = 0x1d0; - if (caslatency == 2) - addr_offset = 0x150; - } - - dimm_end = pci_read_config8(NB, DRB + i); - - addr = (dimm_start * 8 * 1024 * 1024) + addr_offset; - if (dimm_end > dimm_start) { -#if 0 - PRINT_DEBUG(" Sending RAM command 0x"); - PRINT_DEBUG_HEX16(reg16); - PRINT_DEBUG(" to 0x"); - PRINT_DEBUG_HEX32(addr); - PRINT_DEBUG("\n"); -#endif - - read32(addr); - } - - /* Set the start of the next DIMM. */ - dimm_start = dimm_end; - } -} - -/*----------------------------------------------------------------------------- -DIMM-independant configuration functions. ------------------------------------------------------------------------------*/ - -static void spd_enable_refresh(void) -{ - uint8_t reg; - - reg = pci_read_config8(NB, DRAMC); - - /* this chipset offer only two choices regarding refresh - * refresh disabled, or refresh normal - */ - - pci_write_config8(NB, DRAMC, reg | 0x01); - reg = pci_read_config8(NB, DRAMC); - - PRINT_DEBUG("spd_enable_refresh: dramc = 0x"); - PRINT_DEBUG_HEX8(reg); - PRINT_DEBUG("\n"); -} - -/*----------------------------------------------------------------------------- -Public interface. ------------------------------------------------------------------------------*/ - -static void northbridge_init(void) -{ - uint32_t reg32; - - reg32 = pci_read_config32(NB, APBASE); - reg32 &= 0xe8000000U; - pci_write_config32(NB, APBASE, reg32); - -#if CONFIG_DEBUG_RAM_SETUP - /* - * apbase dont get set still, no idea what i have doing wrong yet, - * i am almost sure that somehow i set it by mistake once, but can't - * repeat that. - */ - reg32 = pci_read_config32(NB, APBASE); - PRINT_DEBUG("APBASE "); - PRINT_DEBUG_HEX32(reg32); - PRINT_DEBUG("\n"); -#endif -} - - -/** - * This routine sets RAM controller inside northbridge to known state - * - */ -static void sdram_set_registers(void) -{ - int i, max; - - /* nice banner with FSB shown? do we have - * any standart policy about such things? - */ -#if 0 - uint16_t reg16; - reg16 = pci_read_config16(NB, PACCFG); - printk(BIOS_DEBUG, "i82443LX Host Freq: 6%C MHz\n", (reg16 & 0x4000) ? '0' : '6'); -#endif - - PRINT_DEBUG("Northbridge prior to SDRAM init:\n"); - DUMPNORTH(); - - northbridge_init(); - - max = ARRAY_SIZE(register_values); - - /* Set registers as specified in the register_values[] array. */ - for (i = 0; i < max; i += 3) { - uint8_t reg,tmp; - reg = pci_read_config8(NB, register_values[i]); - reg &= register_values[i + 1]; - reg |= register_values[i + 2] & ~(register_values[i + 1]); - pci_write_config8(NB, register_values[i], reg); - - /* - * i am not sure if that is needed, but was usefull - * for me to confirm what got written - */ -#if CONFIG_DEBUG_RAM_SETUP - PRINT_DEBUG(" Set register 0x"); - PRINT_DEBUG_HEX8(register_values[i]); - PRINT_DEBUG(" to 0x"); - PRINT_DEBUG_HEX8(reg); - tmp = pci_read_config8(NB, register_values[i]); - PRINT_DEBUG(" readed 0x"); - PRINT_DEBUG_HEX8(tmp); - if (tmp == reg) { - PRINT_DEBUG(" OK "); - } else { - PRINT_DEBUG(" FAIL "); - } - PRINT_DEBUG("\n"); -#endif - } - - PRINT_DEBUG("Northbridge atexit sdram set registers\n"); - DUMPNORTH(); -} - - -static void sdram_set_spd_registers(void) -{ - int i; - u16 memsize = 0; - - for (i = 0; i < DIMM_SOCKETS; i++) { - uint16_t ds = 0; // dimm size - int j; - /* this code skips second bank on each socket (no idea how to fix it now) - */ - - PRINT_DEBUG("DIMM"); - PRINT_DEBUG_HEX8(i); - PRINT_DEBUG(" rows: "); - PRINT_DEBUG_HEX8(spd_read_byte(DIMM0 + i, SPD_NUM_DIMM_BANKS) & 0xFF); - PRINT_DEBUG(" rowsize: "); - PRINT_DEBUG_HEX8(spd_read_byte(DIMM0 + i, SPD_DENSITY_OF_EACH_ROW_ON_MODULE) & 0xFF); - PRINT_DEBUG(" modulesize: "); - - j = spd_read_byte(DIMM0 + i, SPD_NUM_DIMM_BANKS); - if (j < 0) - j = 0; - else - ds = j; - - j = spd_read_byte(DIMM0 + i, SPD_DENSITY_OF_EACH_ROW_ON_MODULE); - - if (j < 0) - j = 0; - else - ds = ds * (j >> 1); // convert from 4MB to 8MB units in place - - - /* This is more or less crude hack - * allowing to run this target under qemu (even if that is not really - * same hardware emulated), - * probably some kconfig expert option should be added to enable/disable - * this nicelly - */ -#if 0 - if (ds == 0 && memsize == 0) - ds = 0x8; -#endif - - - // todo: support for bank with not equal sizes as per jedec standart? - - /* - * because density is reported in units of 4Mbyte - * and rows in device are just value, - * and for setting registers we need value in 8Mbyte units - */ - - PRINT_DEBUG_HEX16(ds); - PRINT_DEBUG("\n"); - - memsize += ds; - - pci_write_config8(NB, DRB + (2*i), memsize); - pci_write_config8(NB, DRB + (2*i) + 1, memsize); - if (ds > 0) { - /* i have no idea why pci_read_config16 not work for - * me correctly here - */ - ds = pci_read_config8(NB, DRT+1); - ds <<=8; - ds |= pci_read_config8(NB, DRT); - - PRINT_DEBUG("DRT "); - PRINT_DEBUG_HEX16(ds); - - ds &= ~(0x01 << (4 * i)); - - PRINT_DEBUG(" "); - PRINT_DEBUG_HEX16(ds); - PRINT_DEBUG("\n"); - - /* - * modify DRT register if current row isn't empty - * code assume its SDRAM plugged (should check if its sdram or EDO, - * edo would have 0x00 as constand instead 0x10 for SDRAM - * also this code is buggy because ignores second row of each dimm socket - */ - - /* and as above write_config16 not work here too) - * pci_write_config16(NB, DRT, j); - */ - - pci_write_config8(NB, DRT+1, ds >> 8); - pci_write_config8(NB, DRT, ds & 0xFF); - } - } - -#if 0 - PRINT_DEBUG("Mem: 0x"); - PRINT_DEBUG_HEX16(memsize * 8); - PRINT_DEBUG(" MB\n"); - - if (memsize == 0) { - /* maybe we should use some nice die/hlt sequence with printing on console - * that no memory found, get lost, i can't run? - * maybe such event_handler can be commonly defined routine to decrease - * code duplication? - */ - PRINT_DEBUG("No memory detected via SPD\n"); - PRINT_DEBUG("Reverting to hardcoded 64M single side dimm in first bank\n"); - } -#endif - - /* Set DRAMC. Don't enable refresh for now. */ - pci_write_config8(NB, DRAMC, 0x00); - - /* Cas latency 3, and other shouldbe properly from spd too */ - pci_write_config8(NB, DRAMT, 0xAC); - - /* TODO? */ - pci_write_config8(NB, PCI_LATENCY_TIMER, 0x40); - - // set drive strength - pci_write_config32(NB, MBSC, 0x00000000); -} - -static void sdram_enable(void) -{ - int i; - - /* 0. Wait until power/voltages and clocks are stable (200us). */ - udelay(200); - - /* 1. Apply NOP. Wait 200 clock cycles (clock might be 60 or 66 MHz). */ - PRINT_DEBUG("RAM Enable 1: Apply NOP\n"); - do_ram_command(RAM_COMMAND_NOP); - udelay(200); - - /* 2. Precharge all. Wait tRP. */ - PRINT_DEBUG("RAM Enable 2: Precharge all\n"); - do_ram_command(RAM_COMMAND_PRECHARGE); - udelay(1); - - /* 3. Perform 8 refresh cycles. Wait tRC each time. */ - PRINT_DEBUG("RAM Enable 3: CBR\n"); - for (i = 0; i < 8; i++) { - do_ram_command(RAM_COMMAND_CBR); - udelay(1); - } - - /* 4. Mode register set. Wait two memory cycles. */ - PRINT_DEBUG("RAM Enable 4: Mode register set\n"); - do_ram_command(RAM_COMMAND_MRS); - udelay(2); - - /* 5. Normal operation. */ - PRINT_DEBUG("RAM Enable 5: Normal operation\n"); - do_ram_command(RAM_COMMAND_NORMAL); - udelay(1); - - /* 6. Finally enable refresh. */ - PRINT_DEBUG("RAM Enable 6: Enable refresh\n"); - pci_write_config8(NB, DRAMC, 0x01); - spd_enable_refresh(); - udelay(1); - - PRINT_DEBUG("Northbridge following SDRAM init:\n"); -} diff --git a/src/northbridge/intel/i440lx/raminit.h b/src/northbridge/intel/i440lx/raminit.h deleted file mode 100644 index 79457fd22f..0000000000 --- a/src/northbridge/intel/i440lx/raminit.h +++ /dev/null @@ -1,28 +0,0 @@ -/* - * This file is part of the coreboot project. - * - * Copyright (C) 2007 Uwe Hermann <uwe@hermann-uwe.de> - * Copyright (C) 2009 Maciej Pijanka <maciej.pijanka@gmail.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. - */ - -#ifndef RAMINIT_H -#define RAMINIT_H - -/* The 440LX supports up to four (single- or double-sided) DIMMs. */ -#define DIMM_SOCKETS 4 - -#endif /* RAMINIT_H */ |