/* * This file is part of the LinuxBIOS project. * * Copyright (C) 2007 Uwe Hermann * * 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */ #define ASSEMBLY 1 #include #include #include #include #include #include #include "pc80/serial.c" #include "arch/i386/lib/console.c" #include "ram/ramtest.c" #include "southbridge/intel/i82371eb/i82371eb_early_smbus.c" #include "northbridge/intel/i440bx/raminit.h" #include "mainboard/bitworks/ims/debug.c" // FIXME #include "pc80/udelay_io.c" #include "lib/delay.c" #include "superio/nsc/pc87309/pc87309_early_serial.c" #include "cpu/x86/mtrr/earlymtrr.c" #include "cpu/x86/bist.h" #define SERIAL_DEV PNP_DEV(0x2e, PC87309_SP1) static inline int spd_read_byte(unsigned int device, unsigned int address) { return smbus_read_byte(device, address); } #include "northbridge/intel/i440bx/raminit.c" #include "northbridge/intel/i440bx/debug.c" #include "sdram/generic_sdram.c" static void enable_mainboard_devices(void) { device_t dev = pci_locate_device(PCI_ID(0x8086, 0x7110), 0); if (dev == PCI_DEV_INVALID) { die("Southbridge not found!\n"); } else { print_debug("Southbridge found!\n"); } } static void main(unsigned long bist) { static const struct mem_controller memctrl[] = { { .d0 = PCI_DEV(0, 0, 0), .channel0 = {0x50, 0x51, 0x52, 0x53}, }, }; /* Skip this if there was a built in self test failure. */ if (bist == 0) { early_mtrr_init(); } pc87309_enable_serial(SERIAL_DEV, TTYS0_BASE); uart_init(); console_init(); /* Halt if there was a built in self test failure. */ report_bist_failure(bist); enable_mainboard_devices(); enable_smbus(); dump_spd_registers(&memctrl[0]); sdram_initialize(sizeof(memctrl) / sizeof(memctrl[0]), memctrl); /* Check whether RAM is working. * * Do _not_ check the area from 640 KB - 768 KB, as that's not really * RAM, but rather reserved for the 'Video Buffer Area'. * * Other stuff in the range from 640 KB - 1 MB: * * - 640 KB - 768 KB: Video Buffer Area * - 768 KB - 896 KB: Expansion Area * - 896 KB - 960 KB: Extended System BIOS Area * - 960 KB - 1 MB: Memory (BIOS Area) - System BIOS Area * * Trying to check these areas will usually fail, too. However, you * probably can set the PAM registers of the northbridge to map * those areas to RAM (read/write). In that case you can use the * range from 768 KB - 1 MB as normal RAM, and thus check it here. */ ram_check(0x00000000, 0x0009ffff); /* 0 - 640 KB */ ram_check(0x000c0000, 0x00100000); /* 768 KB - 1 MB */ // ram_check(0x00100000, 0x007c0000); /* 1 MB - 64 MB */ }