| /* |
| * GE IMP3A Board Setup |
| * |
| * Author Martyn Welch <martyn.welch@ge.com> |
| * |
| * Copyright 2010 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. |
| * |
| * Based on: mpc85xx_ds.c (MPC85xx DS Board Setup) |
| * Copyright 2007 Freescale Semiconductor Inc. |
| */ |
| |
| #include <linux/stddef.h> |
| #include <linux/kernel.h> |
| #include <linux/pci.h> |
| #include <linux/kdev_t.h> |
| #include <linux/delay.h> |
| #include <linux/seq_file.h> |
| #include <linux/interrupt.h> |
| #include <linux/of_platform.h> |
| |
| #include <asm/time.h> |
| #include <asm/machdep.h> |
| #include <asm/pci-bridge.h> |
| #include <mm/mmu_decl.h> |
| #include <asm/prom.h> |
| #include <asm/udbg.h> |
| #include <asm/mpic.h> |
| #include <asm/swiotlb.h> |
| #include <asm/nvram.h> |
| |
| #include <sysdev/fsl_soc.h> |
| #include <sysdev/fsl_pci.h> |
| #include "smp.h" |
| |
| #include "mpc85xx.h" |
| #include <sysdev/ge/ge_pic.h> |
| |
| void __iomem *imp3a_regs; |
| |
| void __init ge_imp3a_pic_init(void) |
| { |
| struct mpic *mpic; |
| struct device_node *np; |
| struct device_node *cascade_node = NULL; |
| unsigned long root = of_get_flat_dt_root(); |
| |
| if (of_flat_dt_is_compatible(root, "fsl,MPC8572DS-CAMP")) { |
| mpic = mpic_alloc(NULL, 0, |
| MPIC_NO_RESET | |
| MPIC_BIG_ENDIAN | |
| MPIC_SINGLE_DEST_CPU, |
| 0, 256, " OpenPIC "); |
| } else { |
| mpic = mpic_alloc(NULL, 0, |
| MPIC_BIG_ENDIAN | |
| MPIC_SINGLE_DEST_CPU, |
| 0, 256, " OpenPIC "); |
| } |
| |
| BUG_ON(mpic == NULL); |
| mpic_init(mpic); |
| /* |
| * There is a simple interrupt handler in the main FPGA, this needs |
| * to be cascaded into the MPIC |
| */ |
| for_each_node_by_type(np, "interrupt-controller") |
| if (of_device_is_compatible(np, "gef,fpga-pic-1.00")) { |
| cascade_node = np; |
| break; |
| } |
| |
| if (cascade_node == NULL) { |
| printk(KERN_WARNING "IMP3A: No FPGA PIC\n"); |
| return; |
| } |
| |
| gef_pic_init(cascade_node); |
| of_node_put(cascade_node); |
| } |
| |
| static void ge_imp3a_pci_assign_primary(void) |
| { |
| #ifdef CONFIG_PCI |
| struct device_node *np; |
| struct resource rsrc; |
| |
| for_each_node_by_type(np, "pci") { |
| if (of_device_is_compatible(np, "fsl,mpc8540-pci") || |
| of_device_is_compatible(np, "fsl,mpc8548-pcie") || |
| of_device_is_compatible(np, "fsl,p2020-pcie")) { |
| of_address_to_resource(np, 0, &rsrc); |
| if ((rsrc.start & 0xfffff) == 0x9000) |
| fsl_pci_primary = np; |
| } |
| } |
| #endif |
| } |
| |
| /* |
| * Setup the architecture |
| */ |
| static void __init ge_imp3a_setup_arch(void) |
| { |
| struct device_node *regs; |
| |
| if (ppc_md.progress) |
| ppc_md.progress("ge_imp3a_setup_arch()", 0); |
| |
| mpc85xx_smp_init(); |
| |
| ge_imp3a_pci_assign_primary(); |
| |
| swiotlb_detect_4g(); |
| |
| /* Remap basic board registers */ |
| regs = of_find_compatible_node(NULL, NULL, "ge,imp3a-fpga-regs"); |
| if (regs) { |
| imp3a_regs = of_iomap(regs, 0); |
| if (imp3a_regs == NULL) |
| printk(KERN_WARNING "Unable to map board registers\n"); |
| of_node_put(regs); |
| } |
| |
| #if defined(CONFIG_MMIO_NVRAM) |
| mmio_nvram_init(); |
| #endif |
| |
| printk(KERN_INFO "GE Intelligent Platforms IMP3A 3U cPCI SBC\n"); |
| } |
| |
| /* Return the PCB revision */ |
| static unsigned int ge_imp3a_get_pcb_rev(void) |
| { |
| unsigned int reg; |
| |
| reg = ioread16(imp3a_regs); |
| return (reg >> 8) & 0xff; |
| } |
| |
| /* Return the board (software) revision */ |
| static unsigned int ge_imp3a_get_board_rev(void) |
| { |
| unsigned int reg; |
| |
| reg = ioread16(imp3a_regs + 0x2); |
| return reg & 0xff; |
| } |
| |
| /* Return the FPGA revision */ |
| static unsigned int ge_imp3a_get_fpga_rev(void) |
| { |
| unsigned int reg; |
| |
| reg = ioread16(imp3a_regs + 0x2); |
| return (reg >> 8) & 0xff; |
| } |
| |
| /* Return compactPCI Geographical Address */ |
| static unsigned int ge_imp3a_get_cpci_geo_addr(void) |
| { |
| unsigned int reg; |
| |
| reg = ioread16(imp3a_regs + 0x6); |
| return (reg & 0x0f00) >> 8; |
| } |
| |
| /* Return compactPCI System Controller Status */ |
| static unsigned int ge_imp3a_get_cpci_is_syscon(void) |
| { |
| unsigned int reg; |
| |
| reg = ioread16(imp3a_regs + 0x6); |
| return reg & (1 << 12); |
| } |
| |
| static void ge_imp3a_show_cpuinfo(struct seq_file *m) |
| { |
| seq_printf(m, "Vendor\t\t: GE Intelligent Platforms\n"); |
| |
| seq_printf(m, "Revision\t: %u%c\n", ge_imp3a_get_pcb_rev(), |
| ('A' + ge_imp3a_get_board_rev() - 1)); |
| |
| seq_printf(m, "FPGA Revision\t: %u\n", ge_imp3a_get_fpga_rev()); |
| |
| seq_printf(m, "cPCI geo. addr\t: %u\n", ge_imp3a_get_cpci_geo_addr()); |
| |
| seq_printf(m, "cPCI syscon\t: %s\n", |
| ge_imp3a_get_cpci_is_syscon() ? "yes" : "no"); |
| } |
| |
| /* |
| * Called very early, device-tree isn't unflattened |
| */ |
| static int __init ge_imp3a_probe(void) |
| { |
| unsigned long root = of_get_flat_dt_root(); |
| |
| return of_flat_dt_is_compatible(root, "ge,IMP3A"); |
| } |
| |
| machine_arch_initcall(ge_imp3a, mpc85xx_common_publish_devices); |
| |
| machine_arch_initcall(ge_imp3a, swiotlb_setup_bus_notifier); |
| |
| define_machine(ge_imp3a) { |
| .name = "GE_IMP3A", |
| .probe = ge_imp3a_probe, |
| .setup_arch = ge_imp3a_setup_arch, |
| .init_IRQ = ge_imp3a_pic_init, |
| .show_cpuinfo = ge_imp3a_show_cpuinfo, |
| #ifdef CONFIG_PCI |
| .pcibios_fixup_bus = fsl_pcibios_fixup_bus, |
| #endif |
| .get_irq = mpic_get_irq, |
| .restart = fsl_rstcr_restart, |
| .calibrate_decr = generic_calibrate_decr, |
| .progress = udbg_progress, |
| }; |