2 * Wind River SBC8548 setup and early boot code.
4 * Copyright 2007 Wind River Systems Inc.
6 * By Paul Gortmaker (see MAINTAINERS for contact information)
8 * Based largely on the MPC8548CDS support - Copyright 2005 Freescale Inc.
11 * This program is free software; you can redistribute it and/or modify it
12 * under the terms of the GNU General Public License as published by the
13 * Free Software Foundation; either version 2 of the License, or (at your
14 * option) any later version.
17 #include <linux/stddef.h>
18 #include <linux/kernel.h>
19 #include <linux/init.h>
20 #include <linux/errno.h>
21 #include <linux/reboot.h>
22 #include <linux/pci.h>
23 #include <linux/kdev_t.h>
24 #include <linux/major.h>
25 #include <linux/console.h>
26 #include <linux/delay.h>
27 #include <linux/seq_file.h>
28 #include <linux/initrd.h>
29 #include <linux/interrupt.h>
30 #include <linux/fsl_devices.h>
31 #include <linux/of_platform.h>
33 #include <asm/system.h>
34 #include <asm/pgtable.h>
36 #include <linux/atomic.h>
39 #include <asm/machdep.h>
41 #include <asm/pci-bridge.h>
43 #include <mm/mmu_decl.h>
48 #include <sysdev/fsl_soc.h>
49 #include <sysdev/fsl_pci.h>
55 static void __init sbc8548_pic_init(void)
57 struct mpic *mpic = mpic_alloc(NULL, 0,
58 MPIC_WANTS_RESET | MPIC_BIG_ENDIAN,
64 /* Extract the HW Rev from the EPLD on the board */
65 static int __init sbc8548_hw_rev(void)
67 struct device_node *np;
72 np = of_find_compatible_node(NULL, NULL, "hw-rev");
74 printk("No HW-REV found in DTB.\n");
78 of_address_to_resource(np, 0, &res);
81 rev = ioremap(res.start,sizeof(unsigned int));
82 board_rev = (*rev) >> 28;
89 * Setup the architecture
91 static void __init sbc8548_setup_arch(void)
94 struct device_node *np;
98 ppc_md.progress("sbc8548_setup_arch()", 0);
101 for_each_node_by_type(np, "pci") {
102 if (of_device_is_compatible(np, "fsl,mpc8540-pci") ||
103 of_device_is_compatible(np, "fsl,mpc8548-pcie")) {
104 struct resource rsrc;
105 of_address_to_resource(np, 0, &rsrc);
106 if ((rsrc.start & 0xfffff) == 0x8000)
107 fsl_add_bridge(np, 1);
109 fsl_add_bridge(np, 0);
113 sbc_rev = sbc8548_hw_rev();
116 static void sbc8548_show_cpuinfo(struct seq_file *m)
118 uint pvid, svid, phid1;
120 pvid = mfspr(SPRN_PVR);
121 svid = mfspr(SPRN_SVR);
123 seq_printf(m, "Vendor\t\t: Wind River\n");
124 seq_printf(m, "Machine\t\t: SBC8548 v%d\n", sbc_rev);
125 seq_printf(m, "PVR\t\t: 0x%x\n", pvid);
126 seq_printf(m, "SVR\t\t: 0x%x\n", svid);
128 /* Display cpu Pll setting */
129 phid1 = mfspr(SPRN_HID1);
130 seq_printf(m, "PLL setting\t: 0x%x\n", ((phid1 >> 24) & 0x3f));
133 machine_device_initcall(sbc8548, mpc85xx_common_publish_devices);
136 * Called very early, device-tree isn't unflattened
138 static int __init sbc8548_probe(void)
140 unsigned long root = of_get_flat_dt_root();
142 return of_flat_dt_is_compatible(root, "SBC8548");
145 define_machine(sbc8548) {
147 .probe = sbc8548_probe,
148 .setup_arch = sbc8548_setup_arch,
149 .init_IRQ = sbc8548_pic_init,
150 .show_cpuinfo = sbc8548_show_cpuinfo,
151 .get_irq = mpic_get_irq,
152 .restart = fsl_rstcr_restart,
154 .pcibios_fixup_bus = fsl_pcibios_fixup_bus,
156 .calibrate_decr = generic_calibrate_decr,
157 .progress = udbg_progress,