/* * Copyright (C) Freescale Semiconductor, Inc. 2006. All rights reserved. * * 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> #ifdef CONFIG_PCI #include <asm/mmu.h> #include <asm/global_data.h> #include <pci.h> #include <asm/mpc8349_pci.h> #include <i2c.h> #if defined(CONFIG_OF_FLAT_TREE) #include <ft_build.h> #endif DECLARE_GLOBAL_DATA_PTR; /* System RAM mapped to PCI space */ #define CONFIG_PCI_SYS_MEM_BUS CFG_SDRAM_BASE #define CONFIG_PCI_SYS_MEM_PHYS CFG_SDRAM_BASE #ifndef CONFIG_PCI_PNP static struct pci_config_table pci_mpc8349itx_config_table[] = { { PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, PCI_IDSEL_NUMBER, PCI_ANY_ID, pci_cfgfunc_config_device, { PCI_ENET0_IOADDR, PCI_ENET0_MEMADDR, PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER} }, {} }; #endif static struct pci_controller pci_hose[] = { { #ifndef CONFIG_PCI_PNP config_table:pci_mpc8349itx_config_table, #endif }, { #ifndef CONFIG_PCI_PNP config_table:pci_mpc8349itx_config_table, #endif } }; /************************************************************************** * pci_init_board() * * NOTICE: PCI2 is not currently supported * */ void pci_init_board(void) { volatile immap_t *immr; volatile clk83xx_t *clk; volatile law83xx_t *pci_law; volatile pot83xx_t *pci_pot; volatile pcictrl83xx_t *pci_ctrl; volatile pciconf83xx_t *pci_conf; u8 reg8; u16 reg16; u32 reg32; u32 dev; struct pci_controller *hose; immr = (immap_t *) CFG_IMMR; clk = (clk83xx_t *) & immr->clk; pci_law = immr->sysconf.pcilaw; pci_pot = immr->ios.pot; pci_ctrl = immr->pci_ctrl; pci_conf = immr->pci_conf; hose = &pci_hose[0]; /* * Configure PCI controller and PCI_CLK_OUTPUT both in 66M mode */ reg32 = clk->occr; udelay(2000); #ifdef CONFIG_HARD_I2C i2c_set_bus_num(1); /* Read the PCI_M66EN jumper setting */ if ((i2c_read(CFG_I2C_8574_ADDR2, 0, 0, ®8, sizeof(reg8)) == 0) || (i2c_read(CFG_I2C_8574A_ADDR2, 0, 0, ®8, sizeof(reg8)) == 0)) { if (reg8 & I2C_8574_PCI66) clk->occr = 0xff000000; /* 66 MHz PCI */ else clk->occr = 0xff600001; /* 33 MHz PCI */ } else { clk->occr = 0xff600001; /* 33 MHz PCI */ } #else clk->occr = 0xff000000; /* 66 MHz PCI */ #endif udelay(2000); /* * Release PCI RST Output signal */ pci_ctrl[0].gcr = 0; udelay(2000); pci_ctrl[0].gcr = 1; #ifdef CONFIG_MPC83XX_PCI2 pci_ctrl[1].gcr = 0; udelay(2000); pci_ctrl[1].gcr = 1; #endif /* We need to wait at least a 1sec based on PCI specs */ { int i; for (i = 0; i < 1000; i++) udelay(1000); } /* * Configure PCI Local Access Windows */ pci_law[0].bar = CFG_PCI1_MEM_PHYS & LAWBAR_BAR; pci_law[0].ar = LAWAR_EN | LAWAR_SIZE_1G; pci_law[1].bar = CFG_PCI1_IO_PHYS & LAWBAR_BAR; pci_law[1].ar = LAWAR_EN | LAWAR_SIZE_32M; /* * Configure PCI Outbound Translation Windows */ /* PCI1 mem space - prefetch */ pci_pot[0].potar = (CFG_PCI1_MEM_BASE >> 12) & POTAR_TA_MASK; pci_pot[0].pobar = (CFG_PCI1_MEM_PHYS >> 12) & POBAR_BA_MASK; pci_pot[0].pocmr = POCMR_EN | POCMR_PREFETCH_EN | POCMR_CM_256M; /* PCI1 IO space */ pci_pot[1].potar = (CFG_PCI1_IO_BASE >> 12) & POTAR_TA_MASK; pci_pot[1].pobar = (CFG_PCI1_IO_PHYS >> 12) & POBAR_BA_MASK; pci_pot[1].pocmr = POCMR_EN | POCMR_IO | POCMR_CM_16M; /* PCI1 mmio - non-prefetch mem space */ pci_pot[2].potar = (CFG_PCI1_MMIO_BASE >> 12) & POTAR_TA_MASK; pci_pot[2].pobar = (CFG_PCI1_MMIO_PHYS >> 12) & POBAR_BA_MASK; pci_pot[2].pocmr = POCMR_EN | POCMR_CM_256M; /* * Configure PCI Inbound Translation Windows */ /* we need RAM mapped to PCI space for the devices to * access main memory */ pci_ctrl[0].pitar1 = 0x0; pci_ctrl[0].pibar1 = 0x0; pci_ctrl[0].piebar1 = 0x0; pci_ctrl[0].piwar1 = PIWAR_EN | PIWAR_PF | PIWAR_RTT_SNOOP | PIWAR_WTT_SNOOP | (__ilog2(gd->ram_size) - 1); hose->first_busno = 0; hose->last_busno = 0xff; /* PCI memory prefetch space */ pci_set_region(hose->regions + 0, CFG_PCI1_MEM_BASE, CFG_PCI1_MEM_PHYS, CFG_PCI1_MEM_SIZE, PCI_REGION_MEM | PCI_REGION_PREFETCH); /* PCI memory space */ pci_set_region(hose->regions + 1, CFG_PCI1_MMIO_BASE, CFG_PCI1_MMIO_PHYS, CFG_PCI1_MMIO_SIZE, PCI_REGION_MEM); /* PCI IO space */ pci_set_region(hose->regions + 2, CFG_PCI1_IO_BASE, CFG_PCI1_IO_PHYS, CFG_PCI1_IO_SIZE, PCI_REGION_IO); /* System memory space */ pci_set_region(hose->regions + 3, CONFIG_PCI_SYS_MEM_BUS, CONFIG_PCI_SYS_MEM_PHYS, gd->ram_size, PCI_REGION_MEM | PCI_REGION_MEMORY); hose->region_count = 4; pci_setup_indirect(hose, (CFG_IMMR + 0x8300), (CFG_IMMR + 0x8304)); pci_register_hose(hose); /* * Write to Command register */ reg16 = 0xff; dev = PCI_BDF(hose->first_busno, 0, 0); pci_hose_read_config_word(hose, dev, PCI_COMMAND, ®16); reg16 |= PCI_COMMAND_SERR | PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY; pci_hose_write_config_word(hose, dev, PCI_COMMAND, reg16); /* * Clear non-reserved bits in status register. */ pci_hose_write_config_word(hose, dev, PCI_STATUS, 0xffff); pci_hose_write_config_byte(hose, dev, PCI_LATENCY_TIMER, 0x80); pci_hose_write_config_byte(hose, dev, PCI_CACHE_LINE_SIZE, 0x08); #ifdef CONFIG_PCI_SCAN_SHOW printf("PCI: Bus Dev VenId DevId Class Int\n"); #endif /* * Hose scan. */ hose->last_busno = pci_hose_scan(hose); #ifdef CONFIG_MPC83XX_PCI2 hose = &pci_hose[1]; /* * Configure PCI Outbound Translation Windows */ /* PCI2 mem space - prefetch */ pci_pot[3].potar = (CFG_PCI2_MEM_BASE >> 12) & POTAR_TA_MASK; pci_pot[3].pobar = (CFG_PCI2_MEM_PHYS >> 12) & POBAR_BA_MASK; pci_pot[3].pocmr = POCMR_EN | POCMR_PCI2 | POCMR_PREFETCH_EN | POCMR_CM_256M; /* PCI2 IO space */ pci_pot[4].potar = (CFG_PCI2_IO_BASE >> 12) & POTAR_TA_MASK; pci_pot[4].pobar = (CFG_PCI2_IO_PHYS >> 12) & POBAR_BA_MASK; pci_pot[4].pocmr = POCMR_EN | POCMR_PCI2 | POCMR_IO | POCMR_CM_16M; /* PCI2 mmio - non-prefetch mem space */ pci_pot[5].potar = (CFG_PCI2_MMIO_BASE >> 12) & POTAR_TA_MASK; pci_pot[5].pobar = (CFG_PCI2_MMIO_PHYS >> 12) & POBAR_BA_MASK; pci_pot[5].pocmr = POCMR_EN | POCMR_PCI2 | POCMR_CM_256M; /* * Configure PCI Inbound Translation Windows */ /* we need RAM mapped to PCI space for the devices to * access main memory */ pci_ctrl[1].pitar1 = 0x0; pci_ctrl[1].pibar1 = 0x0; pci_ctrl[1].piebar1 = 0x0; pci_ctrl[1].piwar1 = PIWAR_EN | PIWAR_PF | PIWAR_RTT_SNOOP | PIWAR_WTT_SNOOP | (__ilog2(gd->ram_size) - 1); hose->first_busno = pci_hose[0].last_busno + 1; hose->last_busno = 0xff; /* PCI memory prefetch space */ pci_set_region(hose->regions + 0, CFG_PCI2_MEM_BASE, CFG_PCI2_MEM_PHYS, CFG_PCI2_MEM_SIZE, PCI_REGION_MEM | PCI_REGION_PREFETCH); /* PCI memory space */ pci_set_region(hose->regions + 1, CFG_PCI2_MMIO_BASE, CFG_PCI2_MMIO_PHYS, CFG_PCI2_MMIO_SIZE, PCI_REGION_MEM); /* PCI IO space */ pci_set_region(hose->regions + 2, CFG_PCI2_IO_BASE, CFG_PCI2_IO_PHYS, CFG_PCI2_IO_SIZE, PCI_REGION_IO); /* System memory space */ pci_set_region(hose->regions + 3, CONFIG_PCI_SYS_MEM_BUS, CONFIG_PCI_SYS_MEM_PHYS, gd->ram_size, PCI_REGION_MEM | PCI_REGION_MEMORY); hose->region_count = 4; pci_setup_indirect(hose, (CFG_IMMR + 0x8380), (CFG_IMMR + 0x8384)); pci_register_hose(hose); /* * Write to Command register */ reg16 = 0xff; dev = PCI_BDF(hose->first_busno, 0, 0); pci_hose_read_config_word(hose, dev, PCI_COMMAND, ®16); reg16 |= PCI_COMMAND_SERR | PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY; pci_hose_write_config_word(hose, dev, PCI_COMMAND, reg16); /* * Clear non-reserved bits in status register. */ pci_hose_write_config_word(hose, dev, PCI_STATUS, 0xffff); pci_hose_write_config_byte(hose, dev, PCI_LATENCY_TIMER, 0x80); pci_hose_write_config_byte(hose, dev, PCI_CACHE_LINE_SIZE, 0x08); /* * Hose scan. */ hose->last_busno = pci_hose_scan(hose); #endif } #endif /* CONFIG_PCI */ #ifdef CONFIG_OF_FLAT_TREE void ft_pci_setup(void *blob, bd_t *bd) { u32 *p; int len; p = (u32 *)ft_get_prop(blob, "/" OF_SOC "/pci@8500/bus-range", &len); if (p != NULL) { p[0] = pci_hose[0].first_busno; p[1] = pci_hose[0].last_busno; } #ifdef CONFIG_MPC83XX_PCI2 p = (u32 *)ft_get_prop(blob, "/" OF_SOC "/pci@8600/bus-range", &len); if (p != NULL) { p[0] = pci_hose[1].first_busno; p[1] = pci_hose[1].last_busno; } #endif } #endif /* CONFIG_OF_FLAT_TREE */