mirror of
https://github.com/AsahiLinux/u-boot
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141 lines
4.1 KiB
C
141 lines
4.1 KiB
C
/*
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* (C) Copyright 2004
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* Tolunay Orkun, Nextio Inc., torkun@nextio.com
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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#include <common.h>
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#include <asm/processor.h>
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#include <i2c.h>
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#include <miiphy.h>
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#include <ppc4xx_enet.h>
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/*
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* board_early_init_f: do early board initialization
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*
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*/
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int board_early_init_f(void)
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{
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/*-------------------------------------------------------------------------+
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| Interrupt controller setup for the Walnut board.
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| Note: IRQ 0-15 405GP internally generated; active high; level sensitive
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| IRQ 16 405GP internally generated; active low; level sensitive
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| IRQ 17-24 RESERVED
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| IRQ 25 (EXT IRQ 0) FPGA; active high; level sensitive
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| IRQ 26 (EXT IRQ 1) SMI; active high; level sensitive
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| IRQ 27 (EXT IRQ 2) Not Used
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| IRQ 28 (EXT IRQ 3) PCI SLOT 3; active low; level sensitive
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| IRQ 29 (EXT IRQ 4) PCI SLOT 2; active low; level sensitive
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| IRQ 30 (EXT IRQ 5) PCI SLOT 1; active low; level sensitive
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| IRQ 31 (EXT IRQ 6) PCI SLOT 0; active low; level sensitive
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| Note for Walnut board:
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| An interrupt taken for the FPGA (IRQ 25) indicates that either
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| the Mouse, Keyboard, IRDA, or External Expansion caused the
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| interrupt. The FPGA must be read to determine which device
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| caused the interrupt. The default setting of the FPGA clears
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+-------------------------------------------------------------------------*/
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mtdcr (uicsr, 0xFFFFFFFF); /* clear all ints */
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mtdcr (uicer, 0x00000000); /* disable all ints */
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mtdcr (uiccr, 0x00000000); /* set all to be non-critical */
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mtdcr (uicpr, 0xFFFFFF83); /* set int polarities */
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mtdcr (uictr, 0x10000000); /* set int trigger levels */
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mtdcr (uicvcr, 0x00000001); /* set vect base=0,INT0 highest priority */
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mtdcr (uicsr, 0xFFFFFFFF); /* clear all ints */
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mtebc (epcr, 0xa8400000); /* EBC always driven */
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return 0; /* success */
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}
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/*
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* checkboard: identify/verify the board we are running
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*
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* Remark: we just assume it is correct board here!
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*
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*/
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int checkboard(void)
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{
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printf("BOARD: Cogent CSB472\n");
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return 0; /* success */
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}
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/*
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* initram: Determine the size of mounted DRAM
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*
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* Size is determined by reading SDRAM configuration registers as
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* configured by initialization code
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*
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*/
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long initdram (int board_type)
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{
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ulong tot_size;
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ulong bank_size;
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ulong tmp;
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tot_size = 0;
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mtdcr (memcfga, mem_mb0cf);
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tmp = mfdcr (memcfgd);
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if (tmp & 0x00000001) {
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bank_size = 0x00400000 << ((tmp >> 17) & 0x7);
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tot_size += bank_size;
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}
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mtdcr (memcfga, mem_mb1cf);
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tmp = mfdcr (memcfgd);
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if (tmp & 0x00000001) {
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bank_size = 0x00400000 << ((tmp >> 17) & 0x7);
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tot_size += bank_size;
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}
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mtdcr (memcfga, mem_mb2cf);
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tmp = mfdcr (memcfgd);
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if (tmp & 0x00000001) {
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bank_size = 0x00400000 << ((tmp >> 17) & 0x7);
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tot_size += bank_size;
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}
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mtdcr (memcfga, mem_mb3cf);
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tmp = mfdcr (memcfgd);
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if (tmp & 0x00000001) {
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bank_size = 0x00400000 << ((tmp >> 17) & 0x7);
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tot_size += bank_size;
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}
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return tot_size;
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}
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/*
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* last_stage_init: final configurations (such as PHY etc)
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*
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*/
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int last_stage_init(void)
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{
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/* initialize the PHY */
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miiphy_reset(CONFIG_PHY_ADDR);
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miiphy_write(CONFIG_PHY_ADDR, PHY_BMCR,
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PHY_BMCR_AUTON | PHY_BMCR_RST_NEG); /* AUTO neg */
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miiphy_write(CONFIG_PHY_ADDR, PHY_FCSCR, 0x0d08); /* LEDs */
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return 0; /* success */
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}
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