Kumar Gala
19 years ago
parent
c7428d49ac
commit
19ab485189
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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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*/ |
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#include <asm/mmu.h> |
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#include <common.h> |
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#include <asm/global_data.h> |
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#include <pci.h> |
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#include <i2c.h> |
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#ifdef CONFIG_PCI |
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/* System RAM mapped to PCI space */ |
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#define CONFIG_PCI_SYS_MEM_BUS CFG_SDRAM_BASE |
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#define CONFIG_PCI_SYS_MEM_PHYS CFG_SDRAM_BASE |
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#ifndef CONFIG_PCI_PNP |
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static struct pci_config_table pci_mpc83xxads_config_table[] = { |
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{PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, |
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PCI_IDSEL_NUMBER, PCI_ANY_ID, |
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pci_cfgfunc_config_device, {PCI_ENET0_IOADDR, |
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PCI_ENET0_MEMADDR, |
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PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER |
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} |
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}, |
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{} |
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}; |
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#endif |
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static struct pci_controller pci_hose[] = { |
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{ |
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#ifndef CONFIG_PCI_PNP |
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config_table:pci_mpc83xxads_config_table, |
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#endif |
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}, |
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{ |
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#ifndef CONFIG_PCI_PNP |
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config_table:pci_mpc83xxads_config_table, |
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#endif |
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} |
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}; |
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/**************************************************************************
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* |
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* pib_init() -- initialize the PCA9555PW IO expander on the PIB board |
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* |
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*/ |
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void |
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pib_init(void) |
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{ |
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u8 val8; |
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/*
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* Assign PIB PMC slot to desired PCI bus |
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*/ |
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mpc8349_i2c = (i2c_t*)(CFG_IMMRBAR + CFG_I2C2_OFFSET); |
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i2c_init(CFG_I2C_SPEED, CFG_I2C_SLAVE); |
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val8 = 0; |
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i2c_write(0x23, 0x6, 1, &val8, 1); |
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i2c_write(0x23, 0x7, 1, &val8, 1); |
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val8 = 0xff; |
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i2c_write(0x23, 0x2, 1, &val8, 1); |
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i2c_write(0x23, 0x3, 1, &val8, 1); |
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val8 = 0; |
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i2c_write(0x26, 0x6, 1, &val8, 1); |
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val8 = 0x34; |
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i2c_write(0x26, 0x7, 1, &val8, 1); |
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#if defined(PCI_64BIT) |
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val8 = 0xf4; /* PMC2:PCI1/64-bit */ |
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#elif defined(PCI_ALL_PCI1) |
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val8 = 0xf3; /* PMC1:PCI1 PMC2:PCI1 PMC3:PCI1 */ |
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#elif defined(PCI_ONE_PCI1) |
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val8 = 0xf9; /* PMC1:PCI1 PMC2:PCI2 PMC3:PCI2 */ |
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#else |
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val8 = 0xf5; /* PMC1:PCI1 PMC2:PCI1 PMC3:PCI2 */ |
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#endif |
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i2c_write(0x26, 0x2, 1, &val8, 1); |
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val8 = 0xff; |
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i2c_write(0x26, 0x3, 1, &val8, 1); |
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val8 = 0; |
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i2c_write(0x27, 0x6, 1, &val8, 1); |
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i2c_write(0x27, 0x7, 1, &val8, 1); |
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val8 = 0xff; |
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i2c_write(0x27, 0x2, 1, &val8, 1); |
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val8 = 0xef; |
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i2c_write(0x27, 0x3, 1, &val8, 1); |
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asm("eieio"); |
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#if defined(PCI_64BIT) |
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printf("PCI1: 64-bit on PMC2\n"); |
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#elif defined(PCI_ALL_PCI1) |
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printf("PCI1: 32-bit on PMC1, PMC2, PMC3\n"); |
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#elif defined(PCI_ONE_PCI1) |
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printf("PCI1: 32-bit on PMC1\n"); |
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printf("PCI2: 32-bit on PMC2, PMC3\n"); |
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#else |
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printf("PCI1: 32-bit on PMC1, PMC2\n"); |
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printf("PCI2: 32-bit on PMC3\n"); |
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#endif |
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} |
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/**************************************************************************
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* pci_init_board() |
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* |
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* NOTICE: PCI2 is not currently supported |
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* |
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*/ |
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void |
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pci_init_board(void) |
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{ |
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DECLARE_GLOBAL_DATA_PTR; |
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volatile immap_t * immr; |
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volatile clk8349_t * clk; |
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volatile law8349_t * pci_law; |
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volatile pot8349_t * pci_pot; |
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volatile pcictrl8349_t * pci_ctrl; |
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volatile pciconf8349_t * pci_conf; |
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u16 reg16; |
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u32 reg32; |
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struct pci_controller * hose; |
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immr = (immap_t *)CFG_IMMRBAR; |
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clk = (clk8349_t *)&immr->clk; |
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pci_law = immr->sysconf.pcilaw; |
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pci_pot = immr->ios.pot; |
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pci_ctrl = immr->pci_ctrl; |
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pci_conf = immr->pci_conf; |
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hose = &pci_hose[0]; |
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pib_init(); |
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/*
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* Configure PCI controller and PCI_CLK_OUTPUT both in 66M mode |
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*/ |
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reg32 = clk->occr; |
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udelay(2000); |
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clk->occr = 0xff000000; |
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udelay(2000); |
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/*
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* Release PCI RST Output signal |
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*/ |
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pci_ctrl[0].gcr = 0; |
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udelay(2000); |
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pci_ctrl[0].gcr = 1; |
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udelay(2000); |
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/*
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* Configure PCI Local Access Windows |
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*/ |
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pci_law[0].bar = CFG_PCI1_MEM_PHYS & LAWBAR_BAR; |
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pci_law[0].ar = LAWAR_EN | LAWAR_SIZE_1G; |
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pci_law[1].bar = CFG_PCI1_IO_PHYS & LAWBAR_BAR; |
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pci_law[1].ar = LAWAR_EN | LAWAR_SIZE_32M; |
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/*
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* Configure PCI Outbound Translation Windows |
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*/ |
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/* PCI1 mem space */ |
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pci_pot[0].potar = (CFG_PCI1_MEM_BASE >> 12) & POTAR_TA_MASK; |
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pci_pot[0].pobar = (CFG_PCI1_MEM_PHYS >> 12) & POBAR_BA_MASK; |
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pci_pot[0].pocmr = POCMR_EN | (POCMR_CM_512M & POCMR_CM_MASK); |
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/* PCI1 IO space */ |
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pci_pot[1].potar = (CFG_PCI1_IO_BASE >> 12) & POTAR_TA_MASK; |
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pci_pot[1].pobar = (CFG_PCI1_IO_PHYS >> 12) & POBAR_BA_MASK; |
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pci_pot[1].pocmr = POCMR_EN | POCMR_IO | (POCMR_CM_16M & POCMR_CM_MASK); |
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/*
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* Configure PCI Inbound Translation Windows |
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*/ |
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/* we need RAM mapped to PCI space for the devices to
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* access main memory */ |
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pci_ctrl[0].pitar1 = 0x0; |
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pci_ctrl[0].pibar1 = 0x0; |
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pci_ctrl[0].piebar1 = 0x0; |
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pci_ctrl[0].piwar1 = PIWAR_EN | PIWAR_PF | PIWAR_RTT_SNOOP | PIWAR_WTT_SNOOP | PIWAR_IWS_2G; |
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hose->first_busno = 0; |
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hose->last_busno = 0xff; |
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/* PCI memory space */ |
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pci_set_region(hose->regions + 0, |
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CFG_PCI1_MEM_BASE, |
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CFG_PCI1_MEM_PHYS, |
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CFG_PCI1_MEM_SIZE, |
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PCI_REGION_MEM); |
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/* PCI IO space */ |
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pci_set_region(hose->regions + 1, |
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CFG_PCI1_IO_BASE, |
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CFG_PCI1_IO_PHYS, |
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CFG_PCI1_IO_SIZE, |
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PCI_REGION_IO); |
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/* System memory space */ |
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pci_set_region(hose->regions + 2, |
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CONFIG_PCI_SYS_MEM_BUS, |
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CONFIG_PCI_SYS_MEM_PHYS, |
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gd->ram_size, |
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PCI_REGION_MEM | PCI_REGION_MEMORY); |
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hose->region_count = 3; |
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pci_setup_indirect(hose, |
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(CFG_IMMRBAR+0x8300), |
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(CFG_IMMRBAR+0x8304)); |
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pci_register_hose(hose); |
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/*
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* Write to Command register |
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*/ |
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reg16 = 0xff; |
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pci_hose_read_config_word (hose, PCI_BDF(0,0,0), PCI_COMMAND, |
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®16); |
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reg16 |= PCI_COMMAND_SERR | PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY; |
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pci_hose_write_config_word(hose, PCI_BDF(0,0,0), PCI_COMMAND, |
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reg16); |
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/*
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* Clear non-reserved bits in status register. |
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*/ |
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pci_hose_write_config_word(hose, PCI_BDF(0,0,0), PCI_STATUS, |
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0xffff); |
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pci_hose_write_config_byte(hose, PCI_BDF(0,0,0), PCI_LATENCY_TIMER, |
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0x80); |
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#ifdef CONFIG_PCI_SCAN_SHOW |
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printf("PCI: Bus Dev VenId DevId Class Int\n"); |
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#endif |
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/*
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* Hose scan. |
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*/ |
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hose->last_busno = pci_hose_scan(hose); |
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} |
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#endif /* CONFIG_PCI */ |
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