2 * MPC86xx HPCN board specific routines
4 * Recode: ZHANG WEI <wei.zhang@freescale.com>
5 * Initial author: Xianghua Xiao <x.xiao@freescale.com>
7 * Copyright 2006 Freescale Semiconductor Inc.
9 * This program is free software; you can redistribute it and/or modify it
10 * under the terms of the GNU General Public License as published by the
11 * Free Software Foundation; either version 2 of the License, or (at your
12 * option) any later version.
15 #include <linux/stddef.h>
16 #include <linux/kernel.h>
17 #include <linux/pci.h>
18 #include <linux/kdev_t.h>
19 #include <linux/delay.h>
20 #include <linux/seq_file.h>
21 #include <linux/of_platform.h>
23 #include <asm/system.h>
25 #include <asm/machdep.h>
26 #include <asm/pci-bridge.h>
27 #include <asm/mpc86xx.h>
29 #include <mm/mmu_decl.h>
34 #include <sysdev/fsl_pci.h>
35 #include <sysdev/fsl_soc.h>
42 #define DBG(fmt...) do { printk(KERN_ERR fmt); } while(0)
44 #define DBG(fmt...) do { } while(0)
48 extern int uses_fsl_uli_m1575;
49 extern int uli_exclude_device(struct pci_controller *hose,
50 u_char bus, u_char devfn);
52 static int mpc86xx_exclude_device(struct pci_controller *hose,
53 u_char bus, u_char devfn)
55 struct device_node* node;
59 of_address_to_resource(node, 0, &rsrc);
61 if ((rsrc.start & 0xfffff) == 0x8000) {
62 return uli_exclude_device(hose, bus, devfn);
65 return PCIBIOS_SUCCESSFUL;
67 #endif /* CONFIG_PCI */
71 mpc86xx_hpcn_setup_arch(void)
74 struct device_node *np;
78 ppc_md.progress("mpc86xx_hpcn_setup_arch()", 0);
81 for_each_compatible_node(np, "pci", "fsl,mpc8641-pcie") {
83 of_address_to_resource(np, 0, &rsrc);
84 if ((rsrc.start & 0xfffff) == 0x8000)
85 fsl_add_bridge(np, 1);
87 fsl_add_bridge(np, 0);
90 uses_fsl_uli_m1575 = 1;
91 ppc_md.pci_exclude_device = mpc86xx_exclude_device;
95 printk("MPC86xx HPCN board from Freescale Semiconductor\n");
104 mpc86xx_hpcn_show_cpuinfo(struct seq_file *m)
106 struct device_node *root;
107 uint memsize = total_memory;
108 const char *model = "";
109 uint svid = mfspr(SPRN_SVR);
111 seq_printf(m, "Vendor\t\t: Freescale Semiconductor\n");
113 root = of_find_node_by_path("/");
115 model = of_get_property(root, "model", NULL);
116 seq_printf(m, "Machine\t\t: %s\n", model);
119 seq_printf(m, "SVR\t\t: 0x%x\n", svid);
120 seq_printf(m, "Memory\t\t: %d MB\n", memsize / (1024 * 1024));
125 * Called very early, device-tree isn't unflattened
127 static int __init mpc86xx_hpcn_probe(void)
129 unsigned long root = of_get_flat_dt_root();
131 if (of_flat_dt_is_compatible(root, "fsl,mpc8641hpcn"))
132 return 1; /* Looks good */
134 /* Be nice and don't give silent boot death. Delete this in 2.6.27 */
135 if (of_flat_dt_is_compatible(root, "mpc86xx")) {
136 pr_warning("WARNING: your dts/dtb is old. You must update before the next kernel release\n");
144 mpc86xx_time_init(void)
148 /* Set the time base to zero */
152 temp = mfspr(SPRN_HID0);
154 mtspr(SPRN_HID0, temp);
155 asm volatile("isync");
160 static __initdata struct of_device_id of_bus_ids[] = {
161 { .compatible = "simple-bus", },
162 { .compatible = "fsl,rapidio-delta", },
166 static int __init declare_of_platform_devices(void)
168 of_platform_bus_probe(NULL, of_bus_ids, NULL);
172 machine_device_initcall(mpc86xx_hpcn, declare_of_platform_devices);
174 define_machine(mpc86xx_hpcn) {
175 .name = "MPC86xx HPCN",
176 .probe = mpc86xx_hpcn_probe,
177 .setup_arch = mpc86xx_hpcn_setup_arch,
178 .init_IRQ = mpc86xx_init_irq,
179 .show_cpuinfo = mpc86xx_hpcn_show_cpuinfo,
180 .get_irq = mpic_get_irq,
181 .restart = fsl_rstcr_restart,
182 .time_init = mpc86xx_time_init,
183 .calibrate_decr = generic_calibrate_decr,
184 .progress = udbg_progress,
186 .pcibios_fixup_bus = fsl_pcibios_fixup_bus,