2 * MPC85xx setup and early boot code plus other random bits.
4 * Maintained by Kumar Gala (see MAINTAINERS for contact information)
6 * Copyright 2005 Freescale Semiconductor Inc.
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of the GNU General Public License as published by the
10 * Free Software Foundation; either version 2 of the License, or (at your
11 * option) any later version.
14 #include <linux/stddef.h>
15 #include <linux/kernel.h>
16 #include <linux/pci.h>
17 #include <linux/kdev_t.h>
18 #include <linux/delay.h>
19 #include <linux/seq_file.h>
20 #include <linux/root_dev.h>
22 #include <asm/system.h>
24 #include <asm/machdep.h>
25 #include <asm/pci-bridge.h>
26 #include <asm/mpc85xx.h>
29 #include <mm/mmu_decl.h>
32 #include <sysdev/fsl_soc.h>
36 unsigned long isa_io_base = 0;
37 unsigned long isa_mem_base = 0;
42 mpc85xx_exclude_device(u_char bus, u_char devfn)
44 if (bus == 0 && PCI_SLOT(devfn) == 0)
45 return PCIBIOS_DEVICE_NOT_FOUND;
47 return PCIBIOS_SUCCESSFUL;
51 mpc85xx_pcibios_fixup(void)
53 struct pci_dev *dev = NULL;
56 pci_read_irq_line(dev);
58 #endif /* CONFIG_PCI */
61 void __init mpc85xx_ads_pic_init(void)
65 struct device_node *np = NULL;
67 np = of_find_node_by_type(np, "open-pic");
70 printk(KERN_ERR "Could not find open-pic node\n");
74 if(of_address_to_resource(np, 0, &r)) {
75 printk(KERN_ERR "Could not map mpic register space\n");
80 mpic = mpic_alloc(np, r.start,
81 MPIC_PRIMARY | MPIC_WANTS_RESET | MPIC_BIG_ENDIAN,
86 mpic_assign_isu(mpic, 0, r.start + 0x10200);
87 mpic_assign_isu(mpic, 1, r.start + 0x10280);
88 mpic_assign_isu(mpic, 2, r.start + 0x10300);
89 mpic_assign_isu(mpic, 3, r.start + 0x10380);
90 mpic_assign_isu(mpic, 4, r.start + 0x10400);
91 mpic_assign_isu(mpic, 5, r.start + 0x10480);
92 mpic_assign_isu(mpic, 6, r.start + 0x10500);
93 mpic_assign_isu(mpic, 7, r.start + 0x10580);
95 /* Unused on this platform (leave room for 8548) */
96 mpic_assign_isu(mpic, 8, r.start + 0x10600);
97 mpic_assign_isu(mpic, 9, r.start + 0x10680);
98 mpic_assign_isu(mpic, 10, r.start + 0x10700);
99 mpic_assign_isu(mpic, 11, r.start + 0x10780);
101 /* External Interrupts */
102 mpic_assign_isu(mpic, 12, r.start + 0x10000);
103 mpic_assign_isu(mpic, 13, r.start + 0x10080);
104 mpic_assign_isu(mpic, 14, r.start + 0x10100);
110 * Setup the architecture
112 static void __init mpc85xx_ads_setup_arch(void)
114 struct device_node *cpu;
116 struct device_node *np;
120 ppc_md.progress("mpc85xx_ads_setup_arch()", 0);
122 cpu = of_find_node_by_type(NULL, "cpu");
124 const unsigned int *fp;
126 fp = get_property(cpu, "clock-frequency", NULL);
128 loops_per_jiffy = *fp / HZ;
130 loops_per_jiffy = 50000000 / HZ;
135 for (np = NULL; (np = of_find_node_by_type(np, "pci")) != NULL;)
138 ppc_md.pcibios_fixup = mpc85xx_pcibios_fixup;
139 ppc_md.pci_exclude_device = mpc85xx_exclude_device;
142 #ifdef CONFIG_ROOT_NFS
145 ROOT_DEV = Root_HDA1;
149 void mpc85xx_ads_show_cpuinfo(struct seq_file *m)
151 uint pvid, svid, phid1;
152 uint memsize = total_memory;
154 pvid = mfspr(SPRN_PVR);
155 svid = mfspr(SPRN_SVR);
157 seq_printf(m, "Vendor\t\t: Freescale Semiconductor\n");
158 seq_printf(m, "Machine\t\t: mpc85xx\n");
159 seq_printf(m, "PVR\t\t: 0x%x\n", pvid);
160 seq_printf(m, "SVR\t\t: 0x%x\n", svid);
162 /* Display cpu Pll setting */
163 phid1 = mfspr(SPRN_HID1);
164 seq_printf(m, "PLL setting\t: 0x%x\n", ((phid1 >> 24) & 0x3f));
166 /* Display the amount of memory */
167 seq_printf(m, "Memory\t\t: %d MB\n", memsize / (1024 * 1024));
171 * Called very early, device-tree isn't unflattened
173 static int __init mpc85xx_ads_probe(void)
175 /* We always match for now, eventually we should look at the flat
176 dev tree to ensure this is the board we are suppose to run on
181 define_machine(mpc85xx_ads) {
182 .name = "MPC85xx ADS",
183 .probe = mpc85xx_ads_probe,
184 .setup_arch = mpc85xx_ads_setup_arch,
185 .init_IRQ = mpc85xx_ads_pic_init,
186 .show_cpuinfo = mpc85xx_ads_show_cpuinfo,
187 .get_irq = mpic_get_irq,
188 .restart = mpc85xx_restart,
189 .calibrate_decr = generic_calibrate_decr,
190 .progress = udbg_progress,