/* * (C) Copyright 2004 * Tolunay Orkun, Nextio Inc., torkun@nextio.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 */ #include <common.h> #include <asm/processor.h> #include <i2c.h> #include <miiphy.h> #include <ppc4xx_enet.h> void sdram_init(void); /* * Configuration data for AMIS FS6377-01 Programmable 3-PLL Clock Generator * * CLKA output => Epson LCD Controller * CLKB output => Not Connected * CLKC output => Ethernet * CLKD output => UART external clock * * Note: these values are obtained from device after init by micromonitor */ uchar pll_fs6377_regs[16] = { 0x28, 0xef, 0x53, 0x03, 0x4b, 0x80, 0x32, 0x80, 0x94, 0x32, 0x80, 0xd4, 0x56, 0xf6, 0xf6, 0xe0 }; /* * pll_init: Initialize AMIS IC FS6377-01 PLL * * PLL supplies Epson LCD Clock, Ethernet Clock and UART external clock * */ int pll_init(void) { i2c_init(CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE); return i2c_write(CONFIG_SYS_I2C_PLL_ADDR, 0, 1, (uchar *) pll_fs6377_regs, sizeof(pll_fs6377_regs)); } /* * board_early_init_f: do early board initialization * */ int board_early_init_f(void) { /* initialize PLL so UART, LCD, Ethernet clocked at correctly */ (void) get_clocks(); pll_init(); /*-------------------------------------------------------------------------+ | Interrupt controller setup for the Walnut board. | Note: IRQ 0-15 405GP internally generated; active high; level sensitive | IRQ 16 405GP internally generated; active low; level sensitive | IRQ 17-24 RESERVED | IRQ 25 (EXT IRQ 0) FPGA; active high; level sensitive | IRQ 26 (EXT IRQ 1) SMI; active high; level sensitive | IRQ 27 (EXT IRQ 2) Not Used | IRQ 28 (EXT IRQ 3) PCI SLOT 3; active low; level sensitive | IRQ 29 (EXT IRQ 4) PCI SLOT 2; active low; level sensitive | IRQ 30 (EXT IRQ 5) PCI SLOT 1; active low; level sensitive | IRQ 31 (EXT IRQ 6) PCI SLOT 0; active low; level sensitive | Note for Walnut board: | An interrupt taken for the FPGA (IRQ 25) indicates that either | the Mouse, Keyboard, IRDA, or External Expansion caused the | interrupt. The FPGA must be read to determine which device | caused the interrupt. The default setting of the FPGA clears | +-------------------------------------------------------------------------*/ mtdcr (uicsr, 0xFFFFFFFF); /* clear all ints */ mtdcr (uicer, 0x00000000); /* disable all ints */ mtdcr (uiccr, 0x00000000); /* set all to be non-critical */ mtdcr (uicpr, 0xFFFFFF83); /* set int polarities */ mtdcr (uictr, 0x10000000); /* set int trigger levels */ mtdcr (uicvcr, 0x00000001); /* set vect base=0,INT0 highest priority */ mtdcr (uicsr, 0xFFFFFFFF); /* clear all ints */ mtebc (epcr, 0xa8400000); /* EBC always driven */ return 0; /* success */ } /* * checkboard: identify/verify the board we are running * * Remark: we just assume it is correct board here! * */ int checkboard(void) { printf("BOARD: Cogent CSB272\n"); return 0; /* success */ } /* * initram: Determine the size of mounted DRAM * * Size is determined by reading SDRAM configuration registers as * configured by initialization code * */ phys_size_t initdram (int board_type) { ulong tot_size; ulong bank_size; ulong tmp; /* * ToDo: Move the asm init routine sdram_init() to this C file, * or even better use some common ppc4xx code available * in cpu/ppc4xx */ sdram_init(); tot_size = 0; mtdcr (memcfga, mem_mb0cf); tmp = mfdcr (memcfgd); if (tmp & 0x00000001) { bank_size = 0x00400000 << ((tmp >> 17) & 0x7); tot_size += bank_size; } mtdcr (memcfga, mem_mb1cf); tmp = mfdcr (memcfgd); if (tmp & 0x00000001) { bank_size = 0x00400000 << ((tmp >> 17) & 0x7); tot_size += bank_size; } mtdcr (memcfga, mem_mb2cf); tmp = mfdcr (memcfgd); if (tmp & 0x00000001) { bank_size = 0x00400000 << ((tmp >> 17) & 0x7); tot_size += bank_size; } mtdcr (memcfga, mem_mb3cf); tmp = mfdcr (memcfgd); if (tmp & 0x00000001) { bank_size = 0x00400000 << ((tmp >> 17) & 0x7); tot_size += bank_size; } return tot_size; } /* * last_stage_init: final configurations (such as PHY etc) * */ int last_stage_init(void) { /* initialize the PHY */ miiphy_reset("ppc_4xx_eth0", CONFIG_PHY_ADDR); /* AUTO neg */ miiphy_write("ppc_4xx_eth0", CONFIG_PHY_ADDR, PHY_BMCR, PHY_BMCR_AUTON | PHY_BMCR_RST_NEG); /* LEDs */ miiphy_write("ppc_4xx_eth0", CONFIG_PHY_ADDR, PHY_FCSCR, 0x0d08); return 0; /* success */ }