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8
9#undef DEBUG
10
11#include <linux/init.h>
12#include <linux/errno.h>
13#include <linux/sched.h>
14#include <linux/kernel.h>
15#include <linux/export.h>
16#include <linux/mm.h>
17#include <linux/stddef.h>
18#include <linux/unistd.h>
19#include <linux/ptrace.h>
20#include <linux/user.h>
21#include <linux/tty.h>
22#include <linux/string.h>
23#include <linux/delay.h>
24#include <linux/ioport.h>
25#include <linux/major.h>
26#include <linux/initrd.h>
27#include <linux/vt_kern.h>
28#include <linux/console.h>
29#include <linux/pci.h>
30#include <linux/adb.h>
31#include <linux/cuda.h>
32#include <linux/pmu.h>
33#include <linux/irq.h>
34#include <linux/seq_file.h>
35#include <linux/root_dev.h>
36#include <linux/serial.h>
37#include <linux/smp.h>
38#include <linux/bitops.h>
39#include <linux/of_device.h>
40#include <linux/memblock.h>
41
42#include <asm/processor.h>
43#include <asm/sections.h>
44#include <asm/prom.h>
45#include <asm/pgtable.h>
46#include <asm/io.h>
47#include <asm/pci-bridge.h>
48#include <asm/iommu.h>
49#include <asm/machdep.h>
50#include <asm/dma.h>
51#include <asm/cputable.h>
52#include <asm/time.h>
53#include <asm/mpic.h>
54#include <asm/rtas.h>
55#include <asm/udbg.h>
56#include <asm/nvram.h>
57
58#include "maple.h"
59
60#ifdef DEBUG
61#define DBG(fmt...) udbg_printf(fmt)
62#else
63#define DBG(fmt...)
64#endif
65
66static unsigned long maple_find_nvram_base(void)
67{
68 struct device_node *rtcs;
69 unsigned long result = 0;
70
71
72 rtcs = of_find_compatible_node(NULL, "nvram", "AMD8111");
73 if (rtcs) {
74 struct resource r;
75 if (of_address_to_resource(rtcs, 0, &r)) {
76 printk(KERN_EMERG "Maple: Unable to translate NVRAM"
77 " address\n");
78 goto bail;
79 }
80 if (!(r.flags & IORESOURCE_IO)) {
81 printk(KERN_EMERG "Maple: NVRAM address isn't PIO!\n");
82 goto bail;
83 }
84 result = r.start;
85 } else
86 printk(KERN_EMERG "Maple: Unable to find NVRAM\n");
87 bail:
88 of_node_put(rtcs);
89 return result;
90}
91
92static void __noreturn maple_restart(char *cmd)
93{
94 unsigned int maple_nvram_base;
95 const unsigned int *maple_nvram_offset, *maple_nvram_command;
96 struct device_node *sp;
97
98 maple_nvram_base = maple_find_nvram_base();
99 if (maple_nvram_base == 0)
100 goto fail;
101
102
103 sp = of_find_node_by_name(NULL, "service-processor");
104 if (!sp) {
105 printk(KERN_EMERG "Maple: Unable to find Service Processor\n");
106 goto fail;
107 }
108 maple_nvram_offset = of_get_property(sp, "restart-addr", NULL);
109 maple_nvram_command = of_get_property(sp, "restart-value", NULL);
110 of_node_put(sp);
111
112
113 outb_p(*maple_nvram_command, maple_nvram_base + *maple_nvram_offset);
114 for (;;) ;
115 fail:
116 printk(KERN_EMERG "Maple: Manual Restart Required\n");
117 for (;;) ;
118}
119
120static void __noreturn maple_power_off(void)
121{
122 unsigned int maple_nvram_base;
123 const unsigned int *maple_nvram_offset, *maple_nvram_command;
124 struct device_node *sp;
125
126 maple_nvram_base = maple_find_nvram_base();
127 if (maple_nvram_base == 0)
128 goto fail;
129
130
131 sp = of_find_node_by_name(NULL, "service-processor");
132 if (!sp) {
133 printk(KERN_EMERG "Maple: Unable to find Service Processor\n");
134 goto fail;
135 }
136 maple_nvram_offset = of_get_property(sp, "power-off-addr", NULL);
137 maple_nvram_command = of_get_property(sp, "power-off-value", NULL);
138 of_node_put(sp);
139
140
141 outb_p(*maple_nvram_command, maple_nvram_base + *maple_nvram_offset);
142 for (;;) ;
143 fail:
144 printk(KERN_EMERG "Maple: Manual Power-Down Required\n");
145 for (;;) ;
146}
147
148static void __noreturn maple_halt(void)
149{
150 maple_power_off();
151}
152
153#ifdef CONFIG_SMP
154static struct smp_ops_t maple_smp_ops = {
155 .probe = smp_mpic_probe,
156 .message_pass = smp_mpic_message_pass,
157 .kick_cpu = smp_generic_kick_cpu,
158 .setup_cpu = smp_mpic_setup_cpu,
159 .give_timebase = smp_generic_give_timebase,
160 .take_timebase = smp_generic_take_timebase,
161};
162#endif
163
164static void __init maple_use_rtas_reboot_and_halt_if_present(void)
165{
166 if (rtas_service_present("system-reboot") &&
167 rtas_service_present("power-off")) {
168 ppc_md.restart = rtas_restart;
169 pm_power_off = rtas_power_off;
170 ppc_md.halt = rtas_halt;
171 }
172}
173
174static void __init maple_setup_arch(void)
175{
176
177 loops_per_jiffy = 50000000;
178
179
180#ifdef CONFIG_SMP
181 smp_ops = &maple_smp_ops;
182#endif
183
184 maple_pci_init();
185
186 maple_use_rtas_reboot_and_halt_if_present();
187
188 printk(KERN_DEBUG "Using native/NAP idle loop\n");
189
190 mmio_nvram_init();
191}
192
193
194
195
196
197
198static void __init maple_init_IRQ(void)
199{
200 struct device_node *root, *np, *mpic_node = NULL;
201 const unsigned int *opprop;
202 unsigned long openpic_addr = 0;
203 int naddr, n, i, opplen, has_isus = 0;
204 struct mpic *mpic;
205 unsigned int flags = 0;
206
207
208
209
210
211
212 for_each_node_by_type(np, "interrupt-controller")
213 if (of_device_is_compatible(np, "open-pic")) {
214 mpic_node = np;
215 break;
216 }
217 if (mpic_node == NULL)
218 for_each_node_by_type(np, "open-pic") {
219 mpic_node = np;
220 break;
221 }
222 if (mpic_node == NULL) {
223 printk(KERN_ERR
224 "Failed to locate the MPIC interrupt controller\n");
225 return;
226 }
227
228
229 root = of_find_node_by_path("/");
230 naddr = of_n_addr_cells(root);
231 opprop = of_get_property(root, "platform-open-pic", &opplen);
232 if (opprop) {
233 openpic_addr = of_read_number(opprop, naddr);
234 has_isus = (opplen > naddr);
235 printk(KERN_DEBUG "OpenPIC addr: %lx, has ISUs: %d\n",
236 openpic_addr, has_isus);
237 }
238
239 BUG_ON(openpic_addr == 0);
240
241
242 if (of_get_property(np, "big-endian", NULL) != NULL)
243 flags |= MPIC_BIG_ENDIAN;
244
245
246 flags |= MPIC_U3_HT_IRQS;
247
248 flags |= MPIC_BIG_ENDIAN;
249
250
251
252
253
254 mpic = mpic_alloc(mpic_node, openpic_addr, flags,
255 0, 0, " MPIC ");
256 BUG_ON(mpic == NULL);
257
258
259 opplen /= sizeof(u32);
260 for (n = 0, i = naddr; i < opplen; i += naddr, n++) {
261 unsigned long isuaddr = of_read_number(opprop + i, naddr);
262 mpic_assign_isu(mpic, n, isuaddr);
263 }
264
265
266 mpic_init(mpic);
267 ppc_md.get_irq = mpic_get_irq;
268 of_node_put(mpic_node);
269 of_node_put(root);
270}
271
272static void __init maple_progress(char *s, unsigned short hex)
273{
274 printk("*** %04x : %s\n", hex, s ? s : "");
275}
276
277
278
279
280
281static int __init maple_probe(void)
282{
283 if (!of_machine_is_compatible("Momentum,Maple") &&
284 !of_machine_is_compatible("Momentum,Apache"))
285 return 0;
286
287 pm_power_off = maple_power_off;
288
289 iommu_init_early_dart(&maple_pci_controller_ops);
290
291 return 1;
292}
293
294define_machine(maple) {
295 .name = "Maple",
296 .probe = maple_probe,
297 .setup_arch = maple_setup_arch,
298 .init_IRQ = maple_init_IRQ,
299 .pci_irq_fixup = maple_pci_irq_fixup,
300 .pci_get_legacy_ide_irq = maple_pci_get_legacy_ide_irq,
301 .restart = maple_restart,
302 .halt = maple_halt,
303 .get_boot_time = maple_get_boot_time,
304 .set_rtc_time = maple_set_rtc_time,
305 .get_rtc_time = maple_get_rtc_time,
306 .calibrate_decr = generic_calibrate_decr,
307 .progress = maple_progress,
308 .power_save = power4_idle,
309};
310
311#ifdef CONFIG_EDAC
312
313
314
315
316static int __init maple_cpc925_edac_setup(void)
317{
318 struct platform_device *pdev;
319 struct device_node *np = NULL;
320 struct resource r;
321 int ret;
322 volatile void __iomem *mem;
323 u32 rev;
324
325 np = of_find_node_by_type(NULL, "memory-controller");
326 if (!np) {
327 printk(KERN_ERR "%s: Unable to find memory-controller node\n",
328 __func__);
329 return -ENODEV;
330 }
331
332 ret = of_address_to_resource(np, 0, &r);
333 of_node_put(np);
334
335 if (ret < 0) {
336 printk(KERN_ERR "%s: Unable to get memory-controller reg\n",
337 __func__);
338 return -ENODEV;
339 }
340
341 mem = ioremap(r.start, resource_size(&r));
342 if (!mem) {
343 printk(KERN_ERR "%s: Unable to map memory-controller memory\n",
344 __func__);
345 return -ENOMEM;
346 }
347
348 rev = __raw_readl(mem);
349 iounmap(mem);
350
351 if (rev < 0x34 || rev > 0x3f) {
352 printk(KERN_ERR "%s: Non-CPC925(U3H) bridge revision: %02x\n",
353 __func__, rev);
354 return 0;
355 }
356
357 pdev = platform_device_register_simple("cpc925_edac", 0, &r, 1);
358 if (IS_ERR(pdev))
359 return PTR_ERR(pdev);
360
361 printk(KERN_INFO "%s: CPC925 platform device created\n", __func__);
362
363 return 0;
364}
365machine_device_initcall(maple, maple_cpc925_edac_setup);
366#endif
367
