| /* |
| * MPC86xx HPCN board specific routines |
| * |
| * Recode: ZHANG WEI <wei.zhang@freescale.com> |
| * Initial author: Xianghua Xiao <x.xiao@freescale.com> |
| * |
| * Copyright 2006 Freescale Semiconductor 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/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/of_platform.h> |
| #include <linux/lmb.h> |
| |
| #include <asm/system.h> |
| #include <asm/time.h> |
| #include <asm/machdep.h> |
| #include <asm/pci-bridge.h> |
| #include <asm/prom.h> |
| #include <mm/mmu_decl.h> |
| #include <asm/udbg.h> |
| #include <asm/swiotlb.h> |
| |
| #include <asm/mpic.h> |
| |
| #include <sysdev/fsl_pci.h> |
| #include <sysdev/fsl_soc.h> |
| |
| #include "mpc86xx.h" |
| |
| #undef DEBUG |
| |
| #ifdef DEBUG |
| #define DBG(fmt...) do { printk(KERN_ERR fmt); } while(0) |
| #else |
| #define DBG(fmt...) do { } while(0) |
| #endif |
| |
| #ifdef CONFIG_PCI |
| extern int uli_exclude_device(struct pci_controller *hose, |
| u_char bus, u_char devfn); |
| |
| static int mpc86xx_exclude_device(struct pci_controller *hose, |
| u_char bus, u_char devfn) |
| { |
| struct device_node* node; |
| struct resource rsrc; |
| |
| node = hose->dn; |
| of_address_to_resource(node, 0, &rsrc); |
| |
| if ((rsrc.start & 0xfffff) == 0x8000) { |
| return uli_exclude_device(hose, bus, devfn); |
| } |
| |
| return PCIBIOS_SUCCESSFUL; |
| } |
| #endif /* CONFIG_PCI */ |
| |
| |
| static void __init |
| mpc86xx_hpcn_setup_arch(void) |
| { |
| #ifdef CONFIG_PCI |
| struct device_node *np; |
| struct pci_controller *hose; |
| #endif |
| dma_addr_t max = 0xffffffff; |
| |
| if (ppc_md.progress) |
| ppc_md.progress("mpc86xx_hpcn_setup_arch()", 0); |
| |
| #ifdef CONFIG_PCI |
| for_each_compatible_node(np, "pci", "fsl,mpc8641-pcie") { |
| struct resource rsrc; |
| of_address_to_resource(np, 0, &rsrc); |
| if ((rsrc.start & 0xfffff) == 0x8000) |
| fsl_add_bridge(np, 1); |
| else |
| fsl_add_bridge(np, 0); |
| hose = pci_find_hose_for_OF_device(np); |
| max = min(max, hose->dma_window_base_cur + |
| hose->dma_window_size); |
| } |
| |
| ppc_md.pci_exclude_device = mpc86xx_exclude_device; |
| |
| #endif |
| |
| printk("MPC86xx HPCN board from Freescale Semiconductor\n"); |
| |
| #ifdef CONFIG_SMP |
| mpc86xx_smp_init(); |
| #endif |
| |
| #ifdef CONFIG_SWIOTLB |
| if (lmb_end_of_DRAM() > max) { |
| ppc_swiotlb_enable = 1; |
| set_pci_dma_ops(&swiotlb_pci_dma_ops); |
| } |
| #endif |
| } |
| |
| |
| static void |
| mpc86xx_hpcn_show_cpuinfo(struct seq_file *m) |
| { |
| uint svid = mfspr(SPRN_SVR); |
| |
| seq_printf(m, "Vendor\t\t: Freescale Semiconductor\n"); |
| |
| seq_printf(m, "SVR\t\t: 0x%x\n", svid); |
| } |
| |
| |
| /* |
| * Called very early, device-tree isn't unflattened |
| */ |
| static int __init mpc86xx_hpcn_probe(void) |
| { |
| unsigned long root = of_get_flat_dt_root(); |
| |
| if (of_flat_dt_is_compatible(root, "fsl,mpc8641hpcn")) |
| return 1; /* Looks good */ |
| |
| /* Be nice and don't give silent boot death. Delete this in 2.6.27 */ |
| if (of_flat_dt_is_compatible(root, "mpc86xx")) { |
| pr_warning("WARNING: your dts/dtb is old. You must update before the next kernel release\n"); |
| return 1; |
| } |
| |
| return 0; |
| } |
| |
| static long __init |
| mpc86xx_time_init(void) |
| { |
| unsigned int temp; |
| |
| /* Set the time base to zero */ |
| mtspr(SPRN_TBWL, 0); |
| mtspr(SPRN_TBWU, 0); |
| |
| temp = mfspr(SPRN_HID0); |
| temp |= HID0_TBEN; |
| mtspr(SPRN_HID0, temp); |
| asm volatile("isync"); |
| |
| return 0; |
| } |
| |
| static __initdata struct of_device_id of_bus_ids[] = { |
| { .compatible = "simple-bus", }, |
| { .compatible = "fsl,rapidio-delta", }, |
| { .compatible = "gianfar", }, |
| {}, |
| }; |
| |
| static int __init declare_of_platform_devices(void) |
| { |
| of_platform_bus_probe(NULL, of_bus_ids, NULL); |
| |
| return 0; |
| } |
| machine_device_initcall(mpc86xx_hpcn, declare_of_platform_devices); |
| machine_arch_initcall(mpc86xx_hpcn, swiotlb_setup_bus_notifier); |
| |
| define_machine(mpc86xx_hpcn) { |
| .name = "MPC86xx HPCN", |
| .probe = mpc86xx_hpcn_probe, |
| .setup_arch = mpc86xx_hpcn_setup_arch, |
| .init_IRQ = mpc86xx_init_irq, |
| .show_cpuinfo = mpc86xx_hpcn_show_cpuinfo, |
| .get_irq = mpic_get_irq, |
| .restart = fsl_rstcr_restart, |
| .time_init = mpc86xx_time_init, |
| .calibrate_decr = generic_calibrate_decr, |
| .progress = udbg_progress, |
| #ifdef CONFIG_PCI |
| .pcibios_fixup_bus = fsl_pcibios_fixup_bus, |
| #endif |
| }; |