]>
Commit | Line | Data |
---|---|---|
22b619ee AS |
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/system.h> | |
24 | #include <asm/time.h> | |
25 | #include <asm/machdep.h> | |
26 | #include <asm/pci-bridge.h> | |
27 | #include <asm/mpic.h> | |
28 | #include <mm/mmu_decl.h> | |
29 | #include <asm/udbg.h> | |
30 | #include <asm/prom.h> | |
31 | ||
32 | #include <sysdev/fsl_soc.h> | |
33 | #include <sysdev/fsl_pci.h> | |
34 | ||
35 | #include <asm/cpm2.h> | |
36 | #include <sysdev/cpm2_pic.h> | |
37 | ||
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 | ||
47 | static void 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 | ||
57 | static void cpm2_cascade(unsigned int irq, struct irq_desc *desc) | |
58 | { | |
ec775d0e | 59 | struct irq_chip *chip = irq_desc_get_chip(desc); |
22b619ee AS |
60 | int cascade_irq; |
61 | ||
62 | while ((cascade_irq = cpm2_get_irq()) >= 0) | |
63 | generic_handle_irq(cascade_irq); | |
64 | ||
712d5d79 | 65 | chip->irq_eoi(&desc->irq_data); |
22b619ee AS |
66 | } |
67 | ||
68 | static void __init ksi8560_pic_init(void) | |
69 | { | |
70 | struct mpic *mpic; | |
71 | struct resource r; | |
72 | struct device_node *np; | |
73 | #ifdef CONFIG_CPM2 | |
74 | int irq; | |
75 | #endif | |
76 | ||
77 | np = of_find_node_by_type(NULL, "open-pic"); | |
78 | ||
79 | if (np == NULL) { | |
80 | printk(KERN_ERR "Could not find open-pic node\n"); | |
81 | return; | |
82 | } | |
83 | ||
84 | if (of_address_to_resource(np, 0, &r)) { | |
85 | printk(KERN_ERR "Could not map mpic register space\n"); | |
86 | of_node_put(np); | |
87 | return; | |
88 | } | |
89 | ||
90 | mpic = mpic_alloc(np, r.start, | |
91 | MPIC_PRIMARY | MPIC_WANTS_RESET | MPIC_BIG_ENDIAN, | |
92 | 0, 256, " OpenPIC "); | |
93 | BUG_ON(mpic == NULL); | |
94 | of_node_put(np); | |
95 | ||
96 | mpic_init(mpic); | |
97 | ||
98 | #ifdef CONFIG_CPM2 | |
99 | /* Setup CPM2 PIC */ | |
100 | np = of_find_compatible_node(NULL, NULL, "fsl,cpm2-pic"); | |
101 | if (np == NULL) { | |
102 | printk(KERN_ERR "PIC init: can not find fsl,cpm2-pic node\n"); | |
103 | return; | |
104 | } | |
105 | irq = irq_of_parse_and_map(np, 0); | |
106 | ||
107 | cpm2_pic_init(np); | |
108 | of_node_put(np); | |
ec775d0e | 109 | irq_set_chained_handler(irq, cpm2_cascade); |
22b619ee AS |
110 | #endif |
111 | } | |
112 | ||
113 | #ifdef CONFIG_CPM2 | |
114 | /* | |
115 | * Setup I/O ports | |
116 | */ | |
117 | struct cpm_pin { | |
118 | int port, pin, flags; | |
119 | }; | |
120 | ||
121 | static struct cpm_pin __initdata ksi8560_pins[] = { | |
122 | /* SCC1 */ | |
123 | {3, 29, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY}, | |
124 | {3, 30, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY}, | |
125 | {3, 31, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, | |
126 | ||
127 | /* SCC2 */ | |
128 | {3, 26, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY}, | |
129 | {3, 27, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY}, | |
130 | {3, 28, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, | |
131 | ||
132 | /* FCC1 */ | |
133 | {0, 14, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, | |
134 | {0, 15, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, | |
135 | {0, 16, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, | |
136 | {0, 17, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, | |
137 | {0, 18, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY}, | |
138 | {0, 19, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY}, | |
139 | {0, 20, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY}, | |
140 | {0, 21, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY}, | |
141 | {0, 26, CPM_PIN_INPUT | CPM_PIN_SECONDARY}, | |
142 | {0, 27, CPM_PIN_INPUT | CPM_PIN_SECONDARY}, | |
143 | {0, 28, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY}, | |
144 | {0, 29, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY}, | |
145 | {0, 30, CPM_PIN_INPUT | CPM_PIN_SECONDARY}, | |
146 | {0, 31, CPM_PIN_INPUT | CPM_PIN_SECONDARY}, | |
147 | {2, 23, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, /* CLK9 */ | |
148 | {2, 22, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, /* CLK10 */ | |
149 | ||
150 | }; | |
151 | ||
152 | static void __init init_ioports(void) | |
153 | { | |
154 | int i; | |
155 | ||
156 | for (i = 0; i < ARRAY_SIZE(ksi8560_pins); i++) { | |
157 | struct cpm_pin *pin = &ksi8560_pins[i]; | |
158 | cpm2_set_pin(pin->port, pin->pin, pin->flags); | |
159 | } | |
160 | ||
161 | cpm2_clk_setup(CPM_CLK_SCC1, CPM_BRG1, CPM_CLK_RX); | |
162 | cpm2_clk_setup(CPM_CLK_SCC1, CPM_BRG1, CPM_CLK_TX); | |
163 | cpm2_clk_setup(CPM_CLK_SCC2, CPM_BRG2, CPM_CLK_RX); | |
164 | cpm2_clk_setup(CPM_CLK_SCC2, CPM_BRG2, CPM_CLK_TX); | |
165 | cpm2_clk_setup(CPM_CLK_FCC1, CPM_CLK9, CPM_CLK_RX); | |
166 | cpm2_clk_setup(CPM_CLK_FCC1, CPM_CLK10, CPM_CLK_TX); | |
167 | } | |
168 | #endif | |
169 | ||
170 | /* | |
171 | * Setup the architecture | |
172 | */ | |
173 | static void __init ksi8560_setup_arch(void) | |
174 | { | |
175 | struct device_node *cpld; | |
176 | ||
177 | cpld = of_find_compatible_node(NULL, NULL, "emerson,KSI8560-cpld"); | |
178 | if (cpld) | |
179 | cpld_base = of_iomap(cpld, 0); | |
180 | else | |
181 | printk(KERN_ERR "Can't find CPLD in device tree\n"); | |
182 | ||
183 | if (ppc_md.progress) | |
184 | ppc_md.progress("ksi8560_setup_arch()", 0); | |
185 | ||
186 | #ifdef CONFIG_CPM2 | |
187 | cpm2_reset(); | |
188 | init_ioports(); | |
189 | #endif | |
190 | } | |
191 | ||
192 | static void ksi8560_show_cpuinfo(struct seq_file *m) | |
193 | { | |
194 | uint pvid, svid, phid1; | |
22b619ee AS |
195 | |
196 | pvid = mfspr(SPRN_PVR); | |
197 | svid = mfspr(SPRN_SVR); | |
198 | ||
199 | seq_printf(m, "Vendor\t\t: Emerson Network Power\n"); | |
200 | seq_printf(m, "Board\t\t: KSI8560\n"); | |
201 | ||
202 | if (cpld_base) { | |
203 | seq_printf(m, "Hardware rev\t: %d\n", | |
204 | in_8(cpld_base + KSI8560_CPLD_HVR)); | |
205 | seq_printf(m, "CPLD rev\t: %d\n", | |
206 | in_8(cpld_base + KSI8560_CPLD_PVR)); | |
207 | } else | |
208 | seq_printf(m, "Unknown Hardware and CPLD revs\n"); | |
209 | ||
210 | seq_printf(m, "PVR\t\t: 0x%x\n", pvid); | |
211 | seq_printf(m, "SVR\t\t: 0x%x\n", svid); | |
212 | ||
213 | /* Display cpu Pll setting */ | |
214 | phid1 = mfspr(SPRN_HID1); | |
215 | seq_printf(m, "PLL setting\t: 0x%x\n", ((phid1 >> 24) & 0x3f)); | |
22b619ee AS |
216 | } |
217 | ||
218 | static struct of_device_id __initdata of_bus_ids[] = { | |
219 | { .type = "soc", }, | |
cf0d19fb | 220 | { .type = "simple-bus", }, |
22b619ee AS |
221 | { .name = "cpm", }, |
222 | { .name = "localbus", }, | |
84ba4a58 | 223 | { .compatible = "gianfar", }, |
22b619ee AS |
224 | {}, |
225 | }; | |
226 | ||
227 | static int __init declare_of_platform_devices(void) | |
228 | { | |
229 | of_platform_bus_probe(NULL, of_bus_ids, NULL); | |
230 | ||
231 | return 0; | |
232 | } | |
233 | machine_device_initcall(ksi8560, declare_of_platform_devices); | |
234 | ||
235 | /* | |
236 | * Called very early, device-tree isn't unflattened | |
237 | */ | |
238 | static int __init ksi8560_probe(void) | |
239 | { | |
240 | unsigned long root = of_get_flat_dt_root(); | |
241 | ||
242 | return of_flat_dt_is_compatible(root, "emerson,KSI8560"); | |
243 | } | |
244 | ||
245 | define_machine(ksi8560) { | |
246 | .name = "KSI8560", | |
247 | .probe = ksi8560_probe, | |
248 | .setup_arch = ksi8560_setup_arch, | |
249 | .init_IRQ = ksi8560_pic_init, | |
250 | .show_cpuinfo = ksi8560_show_cpuinfo, | |
251 | .get_irq = mpic_get_irq, | |
252 | .restart = machine_restart, | |
253 | .calibrate_decr = generic_calibrate_decr, | |
254 | }; |