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115 lines
2.8 KiB
115 lines
2.8 KiB
// SPDX-License-Identifier: GPL-2.0-or-later |
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/* |
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* Board setup routines for the Emerson/Artesyn MVME7100 |
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* |
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* Copyright 2016 Elettra-Sincrotrone Trieste S.C.p.A. |
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* |
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* Author: Alessio Igor Bogani <[email protected]> |
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* |
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* Based on earlier code by: |
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* |
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* Ajit Prem <[email protected]> |
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* Copyright 2008 Emerson |
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* |
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* USB host fixup is borrowed by: |
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* |
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* Martyn Welch <[email protected]> |
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* Copyright 2008 GE Intelligent Platforms Embedded Systems, Inc. |
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*/ |
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#include <linux/pci.h> |
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#include <linux/of.h> |
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#include <linux/of_platform.h> |
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#include <linux/of_address.h> |
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#include <asm/udbg.h> |
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#include <asm/mpic.h> |
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#include <sysdev/fsl_soc.h> |
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#include <sysdev/fsl_pci.h> |
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#include "mpc86xx.h" |
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#define MVME7100_INTERRUPT_REG_2_OFFSET 0x05 |
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#define MVME7100_DS1375_MASK 0x40 |
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#define MVME7100_MAX6649_MASK 0x20 |
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#define MVME7100_ABORT_MASK 0x10 |
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/* |
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* Setup the architecture |
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*/ |
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static void __init mvme7100_setup_arch(void) |
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{ |
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struct device_node *bcsr_node; |
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void __iomem *mvme7100_regs = NULL; |
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u8 reg; |
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if (ppc_md.progress) |
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ppc_md.progress("mvme7100_setup_arch()", 0); |
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#ifdef CONFIG_SMP |
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mpc86xx_smp_init(); |
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#endif |
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fsl_pci_assign_primary(); |
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/* Remap BCSR registers */ |
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bcsr_node = of_find_compatible_node(NULL, NULL, |
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"artesyn,mvme7100-bcsr"); |
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if (bcsr_node) { |
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mvme7100_regs = of_iomap(bcsr_node, 0); |
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of_node_put(bcsr_node); |
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} |
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if (mvme7100_regs) { |
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/* Disable ds1375, max6649, and abort interrupts */ |
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reg = readb(mvme7100_regs + MVME7100_INTERRUPT_REG_2_OFFSET); |
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reg |= MVME7100_DS1375_MASK | MVME7100_MAX6649_MASK |
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| MVME7100_ABORT_MASK; |
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writeb(reg, mvme7100_regs + MVME7100_INTERRUPT_REG_2_OFFSET); |
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} else |
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pr_warn("Unable to map board registers\n"); |
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pr_info("MVME7100 board from Artesyn\n"); |
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} |
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/* |
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* Called very early, device-tree isn't unflattened |
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*/ |
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static int __init mvme7100_probe(void) |
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{ |
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unsigned long root = of_get_flat_dt_root(); |
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return of_flat_dt_is_compatible(root, "artesyn,MVME7100"); |
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} |
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static void mvme7100_usb_host_fixup(struct pci_dev *pdev) |
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{ |
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unsigned int val; |
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if (!machine_is(mvme7100)) |
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return; |
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/* Ensure only ports 1 & 2 are enabled */ |
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pci_read_config_dword(pdev, 0xe0, &val); |
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pci_write_config_dword(pdev, 0xe0, (val & ~7) | 0x2); |
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/* System clock is 48-MHz Oscillator and EHCI Enabled. */ |
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pci_write_config_dword(pdev, 0xe4, 1 << 5); |
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} |
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DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_NEC, PCI_DEVICE_ID_NEC_USB, |
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mvme7100_usb_host_fixup); |
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machine_arch_initcall(mvme7100, mpc86xx_common_publish_devices); |
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define_machine(mvme7100) { |
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.name = "MVME7100", |
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.probe = mvme7100_probe, |
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.setup_arch = mvme7100_setup_arch, |
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.init_IRQ = mpc86xx_init_irq, |
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.get_irq = mpic_get_irq, |
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.time_init = mpc86xx_time_init, |
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.calibrate_decr = generic_calibrate_decr, |
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.progress = udbg_progress, |
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#ifdef CONFIG_PCI |
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.pcibios_fixup_bus = fsl_pcibios_fixup_bus, |
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#endif |
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};
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