1 /*
2 * Board setup routines for the Emerson KSI8560
3 *
4 * Author: Alexandr Smirnov <asmirnov@ru.mvista.com>
5 *
6 * Based on mpc85xx_ads.c maintained by Kumar Gala
7 *
8 * 2008 (c) MontaVista, Software, Inc. This file is licensed under
9 * the terms of the GNU General Public License version 2. This program
10 * is licensed "as is" without any warranty of any kind, whether express
11 * or implied.
12 *
13 */
14
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>
22
23 #include <asm/time.h>
24 #include <asm/machdep.h>
25 #include <asm/pci-bridge.h>
26 #include <asm/mpic.h>
27 #include <mm/mmu_decl.h>
28 #include <asm/udbg.h>
29 #include <asm/prom.h>
30
31 #include <sysdev/fsl_soc.h>
32 #include <sysdev/fsl_pci.h>
33
34 #include <asm/cpm2.h>
35 #include <sysdev/cpm2_pic.h>
36
37 #include "mpc85xx.h"
38
39 #define KSI8560_CPLD_HVR 0x04 /* Hardware Version Register */
40 #define KSI8560_CPLD_PVR 0x08 /* PLD Version Register */
41 #define KSI8560_CPLD_RCR1 0x30 /* Reset Command Register 1 */
42
43 #define KSI8560_CPLD_RCR1_CPUHR 0x80 /* CPU Hard Reset */
44
45 static void __iomem *cpld_base = NULL;
46
machine_restart(char * cmd)47 static void __noreturn machine_restart(char *cmd)
48 {
49 if (cpld_base)
50 out_8(cpld_base + KSI8560_CPLD_RCR1, KSI8560_CPLD_RCR1_CPUHR);
51 else
52 printk(KERN_ERR "Can't find CPLD base, hang forever\n");
53
54 for (;;);
55 }
56
ksi8560_pic_init(void)57 static void __init ksi8560_pic_init(void)
58 {
59 struct mpic *mpic = mpic_alloc(NULL, 0, MPIC_BIG_ENDIAN,
60 0, 256, " OpenPIC ");
61 BUG_ON(mpic == NULL);
62 mpic_init(mpic);
63
64 mpc85xx_cpm2_pic_init();
65 }
66
67 #ifdef CONFIG_CPM2
68 /*
69 * Setup I/O ports
70 */
71 struct cpm_pin {
72 int port, pin, flags;
73 };
74
75 static struct cpm_pin __initdata ksi8560_pins[] = {
76 /* SCC1 */
77 {3, 29, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
78 {3, 30, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY},
79 {3, 31, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
80
81 /* SCC2 */
82 {3, 26, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
83 {3, 27, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
84 {3, 28, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
85
86 /* FCC1 */
87 {0, 14, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
88 {0, 15, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
89 {0, 16, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
90 {0, 17, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
91 {0, 18, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
92 {0, 19, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
93 {0, 20, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
94 {0, 21, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
95 {0, 26, CPM_PIN_INPUT | CPM_PIN_SECONDARY},
96 {0, 27, CPM_PIN_INPUT | CPM_PIN_SECONDARY},
97 {0, 28, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY},
98 {0, 29, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY},
99 {0, 30, CPM_PIN_INPUT | CPM_PIN_SECONDARY},
100 {0, 31, CPM_PIN_INPUT | CPM_PIN_SECONDARY},
101 {2, 23, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, /* CLK9 */
102 {2, 22, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, /* CLK10 */
103
104 };
105
init_ioports(void)106 static void __init init_ioports(void)
107 {
108 int i;
109
110 for (i = 0; i < ARRAY_SIZE(ksi8560_pins); i++) {
111 struct cpm_pin *pin = &ksi8560_pins[i];
112 cpm2_set_pin(pin->port, pin->pin, pin->flags);
113 }
114
115 cpm2_clk_setup(CPM_CLK_SCC1, CPM_BRG1, CPM_CLK_RX);
116 cpm2_clk_setup(CPM_CLK_SCC1, CPM_BRG1, CPM_CLK_TX);
117 cpm2_clk_setup(CPM_CLK_SCC2, CPM_BRG2, CPM_CLK_RX);
118 cpm2_clk_setup(CPM_CLK_SCC2, CPM_BRG2, CPM_CLK_TX);
119 cpm2_clk_setup(CPM_CLK_FCC1, CPM_CLK9, CPM_CLK_RX);
120 cpm2_clk_setup(CPM_CLK_FCC1, CPM_CLK10, CPM_CLK_TX);
121 }
122 #endif
123
124 /*
125 * Setup the architecture
126 */
ksi8560_setup_arch(void)127 static void __init ksi8560_setup_arch(void)
128 {
129 struct device_node *cpld;
130
131 cpld = of_find_compatible_node(NULL, NULL, "emerson,KSI8560-cpld");
132 if (cpld)
133 cpld_base = of_iomap(cpld, 0);
134 else
135 printk(KERN_ERR "Can't find CPLD in device tree\n");
136
137 if (ppc_md.progress)
138 ppc_md.progress("ksi8560_setup_arch()", 0);
139
140 #ifdef CONFIG_CPM2
141 cpm2_reset();
142 init_ioports();
143 #endif
144 }
145
ksi8560_show_cpuinfo(struct seq_file * m)146 static void ksi8560_show_cpuinfo(struct seq_file *m)
147 {
148 uint pvid, svid, phid1;
149
150 pvid = mfspr(SPRN_PVR);
151 svid = mfspr(SPRN_SVR);
152
153 seq_printf(m, "Vendor\t\t: Emerson Network Power\n");
154 seq_printf(m, "Board\t\t: KSI8560\n");
155
156 if (cpld_base) {
157 seq_printf(m, "Hardware rev\t: %d\n",
158 in_8(cpld_base + KSI8560_CPLD_HVR));
159 seq_printf(m, "CPLD rev\t: %d\n",
160 in_8(cpld_base + KSI8560_CPLD_PVR));
161 } else
162 seq_printf(m, "Unknown Hardware and CPLD revs\n");
163
164 seq_printf(m, "PVR\t\t: 0x%x\n", pvid);
165 seq_printf(m, "SVR\t\t: 0x%x\n", svid);
166
167 /* Display cpu Pll setting */
168 phid1 = mfspr(SPRN_HID1);
169 seq_printf(m, "PLL setting\t: 0x%x\n", ((phid1 >> 24) & 0x3f));
170 }
171
172 machine_device_initcall(ksi8560, mpc85xx_common_publish_devices);
173
174 /*
175 * Called very early, device-tree isn't unflattened
176 */
ksi8560_probe(void)177 static int __init ksi8560_probe(void)
178 {
179 return of_machine_is_compatible("emerson,KSI8560");
180 }
181
define_machine(ksi8560)182 define_machine(ksi8560) {
183 .name = "KSI8560",
184 .probe = ksi8560_probe,
185 .setup_arch = ksi8560_setup_arch,
186 .init_IRQ = ksi8560_pic_init,
187 .show_cpuinfo = ksi8560_show_cpuinfo,
188 .get_irq = mpic_get_irq,
189 .restart = machine_restart,
190 .calibrate_decr = generic_calibrate_decr,
191 };
192
