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