1 /*
2  * Based on MPC8560 ADS and arch/ppc tqm85xx ports
3  *
4  * Maintained by Kumar Gala (see MAINTAINERS for contact information)
5  *
6  * Copyright 2008 Freescale Semiconductor Inc.
7  *
8  * Copyright (c) 2005-2006 DENX Software Engineering
9  * Stefan Roese <sr@denx.de>
10  *
11  * Based on original work by
12  * 	Kumar Gala <kumar.gala@freescale.com>
13  *      Copyright 2004 Freescale Semiconductor Inc.
14  *
15  * This program is free software; you can redistribute  it and/or modify it
16  * under  the terms of  the GNU General  Public License as published by the
17  * Free Software Foundation;  either version 2 of the  License, or (at your
18  * option) any later version.
19  */
20 
21 #include <linux/stddef.h>
22 #include <linux/kernel.h>
23 #include <linux/pci.h>
24 #include <linux/kdev_t.h>
25 #include <linux/delay.h>
26 #include <linux/seq_file.h>
27 #include <linux/of_platform.h>
28 
29 #include <asm/time.h>
30 #include <asm/machdep.h>
31 #include <asm/pci-bridge.h>
32 #include <asm/mpic.h>
33 #include <asm/prom.h>
34 #include <mm/mmu_decl.h>
35 #include <asm/udbg.h>
36 
37 #include <sysdev/fsl_soc.h>
38 #include <sysdev/fsl_pci.h>
39 
40 #include "mpc85xx.h"
41 
42 #ifdef CONFIG_CPM2
43 #include <asm/cpm2.h>
44 #endif /* CONFIG_CPM2 */
45 
46 static void __init tqm85xx_pic_init(void)
47 {
48 	struct mpic *mpic = mpic_alloc(NULL, 0,
49 			MPIC_BIG_ENDIAN,
50 			0, 256, " OpenPIC  ");
51 	BUG_ON(mpic == NULL);
52 	mpic_init(mpic);
53 
54 	mpc85xx_cpm2_pic_init();
55 }
56 
57 /*
58  * Setup the architecture
59  */
60 static void __init tqm85xx_setup_arch(void)
61 {
62 	if (ppc_md.progress)
63 		ppc_md.progress("tqm85xx_setup_arch()", 0);
64 
65 #ifdef CONFIG_CPM2
66 	cpm2_reset();
67 #endif
68 
69 	fsl_pci_assign_primary();
70 }
71 
72 static void tqm85xx_show_cpuinfo(struct seq_file *m)
73 {
74 	uint pvid, svid, phid1;
75 
76 	pvid = mfspr(SPRN_PVR);
77 	svid = mfspr(SPRN_SVR);
78 
79 	seq_printf(m, "Vendor\t\t: TQ Components\n");
80 	seq_printf(m, "PVR\t\t: 0x%x\n", pvid);
81 	seq_printf(m, "SVR\t\t: 0x%x\n", svid);
82 
83 	/* Display cpu Pll setting */
84 	phid1 = mfspr(SPRN_HID1);
85 	seq_printf(m, "PLL setting\t: 0x%x\n", ((phid1 >> 24) & 0x3f));
86 }
87 
88 static void tqm85xx_ti1520_fixup(struct pci_dev *pdev)
89 {
90 	unsigned int val;
91 
92 	/* Do not do the fixup on other platforms! */
93 	if (!machine_is(tqm85xx))
94 		return;
95 
96 	dev_info(&pdev->dev, "Using TI 1520 fixup on TQM85xx\n");
97 
98 	/*
99 	 * Enable P2CCLK bit in system control register
100 	 * to enable CLOCK output to power chip
101 	 */
102 	pci_read_config_dword(pdev, 0x80, &val);
103 	pci_write_config_dword(pdev, 0x80, val | (1 << 27));
104 
105 }
106 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1520,
107 		tqm85xx_ti1520_fixup);
108 
109 machine_arch_initcall(tqm85xx, mpc85xx_common_publish_devices);
110 
111 static const char * const board[] __initconst = {
112 	"tqc,tqm8540",
113 	"tqc,tqm8541",
114 	"tqc,tqm8548",
115 	"tqc,tqm8555",
116 	"tqc,tqm8560",
117 	NULL
118 };
119 
120 /*
121  * Called very early, device-tree isn't unflattened
122  */
123 static int __init tqm85xx_probe(void)
124 {
125 	return of_flat_dt_match(of_get_flat_dt_root(), board);
126 }
127 
128 define_machine(tqm85xx) {
129 	.name			= "TQM85xx",
130 	.probe			= tqm85xx_probe,
131 	.setup_arch		= tqm85xx_setup_arch,
132 	.init_IRQ		= tqm85xx_pic_init,
133 	.show_cpuinfo		= tqm85xx_show_cpuinfo,
134 	.get_irq		= mpic_get_irq,
135 	.restart		= fsl_rstcr_restart,
136 	.calibrate_decr		= generic_calibrate_decr,
137 	.progress		= udbg_progress,
138 };
139