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author | Peter Tyser <ptyser@xes-inc.com> | 2010-04-12 22:28:09 -0500 |
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committer | Wolfgang Denk <wd@denx.de> | 2010-04-13 09:13:16 +0200 |
commit | 8d1f268204b07e172f3cb5cee0a3974d605b0b98 (patch) | |
tree | c3359e920cc886e7060fb099bf933496aca37153 /cpu/mpc83xx/pci.c | |
parent | 819833af39a91fa1c1e8252862bbda6f5a602f7b (diff) | |
download | u-boot-imx-8d1f268204b07e172f3cb5cee0a3974d605b0b98.zip u-boot-imx-8d1f268204b07e172f3cb5cee0a3974d605b0b98.tar.gz u-boot-imx-8d1f268204b07e172f3cb5cee0a3974d605b0b98.tar.bz2 |
ppc: Move cpu/$CPU to arch/ppc/cpu/$CPU
Signed-off-by: Peter Tyser <ptyser@xes-inc.com>
Diffstat (limited to 'cpu/mpc83xx/pci.c')
-rw-r--r-- | cpu/mpc83xx/pci.c | 241 |
1 files changed, 0 insertions, 241 deletions
diff --git a/cpu/mpc83xx/pci.c b/cpu/mpc83xx/pci.c deleted file mode 100644 index a42b230..0000000 --- a/cpu/mpc83xx/pci.c +++ /dev/null @@ -1,241 +0,0 @@ -/* - * Copyright (C) Freescale Semiconductor, Inc. 2007 - * - * Author: Scott Wood <scottwood@freescale.com>, - * with some bits from older board-specific PCI initialization. - * - * 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 <pci.h> - -#if defined(CONFIG_OF_LIBFDT) -#include <libfdt.h> -#include <fdt_support.h> -#endif - -#include <asm/mpc8349_pci.h> - -#define MAX_BUSES 2 - -DECLARE_GLOBAL_DATA_PTR; - -static struct pci_controller pci_hose[MAX_BUSES]; -static int pci_num_buses; - -static void pci_init_bus(int bus, struct pci_region *reg) -{ - volatile immap_t *immr = (volatile immap_t *)CONFIG_SYS_IMMR; - volatile pot83xx_t *pot = immr->ios.pot; - volatile pcictrl83xx_t *pci_ctrl = &immr->pci_ctrl[bus]; - struct pci_controller *hose = &pci_hose[bus]; - u32 dev; - u16 reg16; - int i; - - if (bus == 1) - pot += 3; - - /* Setup outbound translation windows */ - for (i = 0; i < 3; i++, reg++, pot++) { - if (reg->size == 0) - break; - - hose->regions[i] = *reg; - hose->region_count++; - - pot->potar = reg->bus_start >> 12; - pot->pobar = reg->phys_start >> 12; - pot->pocmr = ~(reg->size - 1) >> 12; - - if (reg->flags & PCI_REGION_IO) - pot->pocmr |= POCMR_IO; -#ifdef CONFIG_83XX_PCI_STREAMING - else if (reg->flags & PCI_REGION_PREFETCH) - pot->pocmr |= POCMR_SE; -#endif - - if (bus == 1) - pot->pocmr |= POCMR_DST; - - pot->pocmr |= POCMR_EN; - } - - /* Point inbound translation at RAM */ - pci_ctrl->pitar1 = 0; - pci_ctrl->pibar1 = 0; - pci_ctrl->piebar1 = 0; - pci_ctrl->piwar1 = PIWAR_EN | PIWAR_PF | PIWAR_RTT_SNOOP | - PIWAR_WTT_SNOOP | (__ilog2(gd->ram_size - 1)); - - i = hose->region_count++; - hose->regions[i].bus_start = 0; - hose->regions[i].phys_start = 0; - hose->regions[i].size = gd->ram_size; - hose->regions[i].flags = PCI_REGION_MEM | PCI_REGION_SYS_MEMORY; - - hose->first_busno = pci_last_busno() + 1; - hose->last_busno = 0xff; - - pci_setup_indirect(hose, CONFIG_SYS_IMMR + 0x8300 + bus * 0x80, - CONFIG_SYS_IMMR + 0x8304 + bus * 0x80); - - 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 -#ifndef CONFIG_PCISLAVE - /* - * Hose scan. - */ - hose->last_busno = pci_hose_scan(hose); -#endif -} - -/* - * The caller must have already set OCCR, and the PCI_LAW BARs - * must have been set to cover all of the requested regions. - * - * If fewer than three regions are requested, then the region - * list is terminated with a region of size 0. - */ -void mpc83xx_pci_init(int num_buses, struct pci_region **reg, int warmboot) -{ - volatile immap_t *immr = (volatile immap_t *)CONFIG_SYS_IMMR; - int i; - - if (num_buses > MAX_BUSES) { - printf("%d PCI buses requsted, %d supported\n", - num_buses, MAX_BUSES); - - num_buses = MAX_BUSES; - } - - pci_num_buses = num_buses; - - /* - * Release PCI RST Output signal. - * Power on to RST high must be at least 100 ms as per PCI spec. - * On warm boots only 1 ms is required. - */ - udelay(warmboot ? 1000 : 100000); - - for (i = 0; i < num_buses; i++) - immr->pci_ctrl[i].gcr = 1; - - /* - * RST high to first config access must be at least 2^25 cycles - * as per PCI spec. This could be cut in half if we know we're - * running at 66MHz. This could be insufficiently long if we're - * running the PCI bus at significantly less than 33MHz. - */ - udelay(1020000); - - for (i = 0; i < num_buses; i++) - pci_init_bus(i, reg[i]); -} - -#ifdef CONFIG_PCISLAVE - -#define PCI_FUNCTION_CONFIG 0x44 -#define PCI_FUNCTION_CFG_LOCK 0x20 - -/* - * Unlock the configuration bit so that the host system can begin booting - * - * This should be used after you have: - * 1) Called mpc83xx_pci_init() - * 2) Set up your inbound translation windows to the appropriate size - */ -void mpc83xx_pcislave_unlock(int bus) -{ - struct pci_controller *hose = &pci_hose[bus]; - u32 dev; - u16 reg16; - - /* Unlock configuration lock in PCI function configuration register */ - dev = PCI_BDF(hose->first_busno, 0, 0); - pci_hose_read_config_word (hose, dev, PCI_FUNCTION_CONFIG, ®16); - reg16 &= ~(PCI_FUNCTION_CFG_LOCK); - pci_hose_write_config_word (hose, dev, PCI_FUNCTION_CONFIG, reg16); - - /* The configuration bit is now unlocked, so we can scan the bus */ - hose->last_busno = pci_hose_scan(hose); -} -#endif - -#if defined(CONFIG_OF_LIBFDT) -void ft_pci_setup(void *blob, bd_t *bd) -{ - int nodeoffset; - int tmp[2]; - const char *path; - - if (pci_num_buses < 1) - return; - - nodeoffset = fdt_path_offset(blob, "/aliases"); - if (nodeoffset >= 0) { - path = fdt_getprop(blob, nodeoffset, "pci0", NULL); - if (path) { - tmp[0] = cpu_to_be32(pci_hose[0].first_busno); - tmp[1] = cpu_to_be32(pci_hose[0].last_busno); - do_fixup_by_path(blob, path, "bus-range", - &tmp, sizeof(tmp), 1); - - tmp[0] = cpu_to_be32(gd->pci_clk); - do_fixup_by_path(blob, path, "clock-frequency", - &tmp, sizeof(tmp[0]), 1); - } - - if (pci_num_buses < 2) - return; - - path = fdt_getprop(blob, nodeoffset, "pci1", NULL); - if (path) { - tmp[0] = cpu_to_be32(pci_hose[1].first_busno); - tmp[1] = cpu_to_be32(pci_hose[1].last_busno); - do_fixup_by_path(blob, path, "bus-range", - &tmp, sizeof(tmp), 1); - - tmp[0] = cpu_to_be32(gd->pci_clk); - do_fixup_by_path(blob, path, "clock-frequency", - &tmp, sizeof(tmp[0]), 1); - } - } -} -#endif /* CONFIG_OF_LIBFDT */ |