2 * MPC86xx HPCN board specific routines
4 * Recode: ZHANG WEI <wei.zhang@freescale.com>
5 * Initial author: Xianghua Xiao <x.xiao@freescale.com>
7 * Copyright 2006 Freescale Semiconductor Inc.
9 * This program is free software; you can redistribute it and/or modify it
10 * under the terms of the GNU General Public License as published by the
11 * Free Software Foundation; either version 2 of the License, or (at your
12 * option) any later version.
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>
22 #include <asm/system.h>
24 #include <asm/machdep.h>
25 #include <asm/pci-bridge.h>
26 #include <asm/mpc86xx.h>
28 #include <mm/mmu_decl.h>
30 #include <asm/i8259.h>
34 #include <sysdev/fsl_pci.h>
35 #include <sysdev/fsl_soc.h>
38 #include "mpc8641_hpcn.h"
43 #define DBG(fmt...) do { printk(KERN_ERR fmt); } while(0)
45 #define DBG(fmt...) do { } while(0)
49 static void mpc86xx_8259_cascade(unsigned int irq, struct irq_desc *desc)
51 unsigned int cascade_irq = i8259_irq();
52 if (cascade_irq != NO_IRQ)
53 generic_handle_irq(cascade_irq);
56 #endif /* CONFIG_PCI */
59 mpc86xx_hpcn_init_irq(void)
62 struct device_node *np;
65 struct device_node *cascade_node = NULL;
69 /* Determine PIC address. */
70 np = of_find_node_by_type(NULL, "open-pic");
73 of_address_to_resource(np, 0, &res);
75 /* Alloc mpic structure and per isu has 16 INT entries. */
76 mpic1 = mpic_alloc(np, res.start,
77 MPIC_PRIMARY | MPIC_WANTS_RESET | MPIC_BIG_ENDIAN,
79 BUG_ON(mpic1 == NULL);
84 /* Initialize i8259 controller */
85 for_each_node_by_type(np, "interrupt-controller")
86 if (of_device_is_compatible(np, "chrp,iic")) {
90 if (cascade_node == NULL) {
91 printk(KERN_DEBUG "mpc86xxhpcn: no ISA interrupt controller\n");
95 cascade_irq = irq_of_parse_and_map(cascade_node, 0);
96 if (cascade_irq == NO_IRQ) {
97 printk(KERN_ERR "mpc86xxhpcn: failed to map cascade interrupt");
100 DBG("mpc86xxhpcn: cascade mapped to irq %d\n", cascade_irq);
102 i8259_init(cascade_node, 0);
103 of_node_put(cascade_node);
105 set_irq_chained_handler(cascade_irq, mpc86xx_8259_cascade);
111 enum pirq{PIRQA = 8, PIRQB, PIRQC, PIRQD, PIRQE, PIRQF, PIRQG, PIRQH};
112 const unsigned char uli1575_irq_route_table[16] = {
123 0x3, /* 10: 0b0011 */
124 0x9, /* 11: 0b1001 */
125 0xb, /* 12: 0b1011 */
126 0, /* 13: Reserved */
127 0xd, /* 14, 0b1101 */
128 0xf, /* 15, 0b1111 */
132 get_pci_irq_from_of(struct pci_controller *hose, int slot, int pin)
136 struct device_node *hosenode = hose ? hose->arch_data : NULL;
138 if (!hosenode) return -EINVAL;
140 laddr[0] = (hose->first_busno << 16) | (PCI_DEVFN(slot, 0) << 8);
141 laddr[1] = laddr[2] = 0;
142 of_irq_map_raw(hosenode, &pin, 1, laddr, &oirq);
143 DBG("mpc86xx_hpcn: pci irq addr %x, slot %d, pin %d, irq %d\n",
144 laddr[0], slot, pin, oirq.specifier[0]);
145 return oirq.specifier[0];
148 static void __devinit quirk_uli1575(struct pci_dev *dev)
151 struct pci_controller *hose = pci_bus_to_host(dev->bus);
152 unsigned char irq2pin[16], c;
153 unsigned long pirq_map_word = 0;
158 * ULI1575 interrupts route setup
160 memset(irq2pin, 0, 16); /* Initialize default value 0 */
163 * PIRQA -> PIRQD mapping read from OF-tree
165 * interrupts for PCI slot0 -- PIRQA / PIRQB / PIRQC / PIRQD
166 * PCI slot1 -- PIRQB / PIRQC / PIRQD / PIRQA
168 for (i = 0; i < 4; i++){
169 irq = get_pci_irq_from_of(hose, 17, i + 1);
170 if (irq > 0 && irq < 16)
171 irq2pin[irq] = PIRQA + i;
173 printk(KERN_WARNING "ULI1575 device"
174 "(slot %d, pin %d) irq %d is invalid.\n",
179 * PIRQE -> PIRQF mapping set manually
187 for (i = 0; i < 4; i++) irq2pin[i + 9] = PIRQE + i;
189 /* Set IRQ-PIRQ Mapping to ULI1575 */
190 for (i = 0; i < 16; i++)
192 pirq_map_word |= (uli1575_irq_route_table[i] & 0xf)
193 << ((irq2pin[i] - PIRQA) * 4);
195 /* ULI1575 IRQ mapping conf register default value is 0xb9317542 */
196 DBG("Setup ULI1575 IRQ mapping configuration register value = 0x%x\n",
198 pci_write_config_dword(dev, 0x48, pirq_map_word);
200 #define ULI1575_SET_DEV_IRQ(slot, pin, reg) \
203 irq = get_pci_irq_from_of(hose, slot, pin); \
204 if (irq > 0 && irq < 16) \
205 pci_write_config_byte(dev, reg, irq2pin[irq]); \
207 printk(KERN_WARNING "ULI1575 device" \
208 "(slot %d, pin %d) irq %d is invalid.\n", \
212 /* USB 1.1 OHCI controller 1, slot 28, pin 1 */
213 ULI1575_SET_DEV_IRQ(28, 1, 0x86);
215 /* USB 1.1 OHCI controller 2, slot 28, pin 2 */
216 ULI1575_SET_DEV_IRQ(28, 2, 0x87);
218 /* USB 1.1 OHCI controller 3, slot 28, pin 3 */
219 ULI1575_SET_DEV_IRQ(28, 3, 0x88);
221 /* USB 2.0 controller, slot 28, pin 4 */
222 irq = get_pci_irq_from_of(hose, 28, 4);
223 if (irq >= 0 && irq <=15)
224 pci_write_config_dword(dev, 0x74, uli1575_irq_route_table[irq]);
226 /* Audio controller, slot 29, pin 1 */
227 ULI1575_SET_DEV_IRQ(29, 1, 0x8a);
229 /* Modem controller, slot 29, pin 2 */
230 ULI1575_SET_DEV_IRQ(29, 2, 0x8b);
232 /* HD audio controller, slot 29, pin 3 */
233 ULI1575_SET_DEV_IRQ(29, 3, 0x8c);
235 /* SMB interrupt: slot 30, pin 1 */
236 ULI1575_SET_DEV_IRQ(30, 1, 0x8e);
238 /* PMU ACPI SCI interrupt: slot 30, pin 2 */
239 ULI1575_SET_DEV_IRQ(30, 2, 0x8f);
241 /* Serial ATA interrupt: slot 31, pin 1 */
242 ULI1575_SET_DEV_IRQ(31, 1, 0x8d);
244 /* Primary PATA IDE IRQ: 14
245 * Secondary PATA IDE IRQ: 15
247 pci_write_config_byte(dev, 0x44, 0x30 | uli1575_irq_route_table[14]);
248 pci_write_config_byte(dev, 0x75, uli1575_irq_route_table[15]);
250 /* Set IRQ14 and IRQ15 to legacy IRQs */
251 pci_read_config_word(dev, 0x46, &temp);
253 pci_write_config_word(dev, 0x46, temp);
255 /* Set i8259 interrupt trigger
271 #undef ULI1575_SET_DEV_IRQ
273 /* Disable the HD interface and enable the AC97 interface. */
274 pci_read_config_byte(dev, 0xb8, &c);
276 pci_write_config_byte(dev, 0xb8, c);
279 static void __devinit quirk_uli5288(struct pci_dev *dev)
283 pci_read_config_byte(dev,0x83,&c);
285 pci_write_config_byte(dev, 0x83, c);
287 pci_write_config_byte(dev, 0x09, 0x01);
288 pci_write_config_byte(dev, 0x0a, 0x06);
290 pci_read_config_byte(dev,0x83,&c);
292 pci_write_config_byte(dev, 0x83, c);
294 pci_read_config_byte(dev,0x84,&c);
296 pci_write_config_byte(dev, 0x84, c);
299 static void __devinit quirk_uli5229(struct pci_dev *dev)
302 pci_write_config_word(dev, 0x04, 0x0405);
304 pci_read_config_word(dev, 0x4a, &temp);
306 pci_write_config_word(dev, 0x4a, temp);
309 static void __devinit early_uli5249(struct pci_dev *dev)
312 pci_write_config_word(dev, 0x04, 0x0007);
313 pci_read_config_byte(dev, 0x7c, &temp);
314 pci_write_config_byte(dev, 0x7c, 0x80);
315 pci_write_config_byte(dev, 0x09, 0x01);
316 pci_write_config_byte(dev, 0x7c, temp);
320 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AL, 0x1575, quirk_uli1575);
321 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AL, 0x5288, quirk_uli5288);
322 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AL, 0x5229, quirk_uli5229);
323 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_AL, 0x5249, early_uli5249);
324 #endif /* CONFIG_PCI */
328 mpc86xx_hpcn_setup_arch(void)
330 struct device_node *np;
333 ppc_md.progress("mpc86xx_hpcn_setup_arch()", 0);
335 np = of_find_node_by_type(NULL, "cpu");
337 const unsigned int *fp;
339 fp = of_get_property(np, "clock-frequency", NULL);
341 loops_per_jiffy = *fp / HZ;
343 loops_per_jiffy = 50000000 / HZ;
348 for (np = NULL; (np = of_find_node_by_type(np, "pci")) != NULL;) {
349 struct resource rsrc;
350 of_address_to_resource(np, 0, &rsrc);
351 if ((rsrc.start & 0xfffff) == 0x8000)
352 fsl_add_bridge(np, 1);
354 fsl_add_bridge(np, 0);
358 printk("MPC86xx HPCN board from Freescale Semiconductor\n");
367 mpc86xx_hpcn_show_cpuinfo(struct seq_file *m)
369 struct device_node *root;
370 uint memsize = total_memory;
371 const char *model = "";
372 uint svid = mfspr(SPRN_SVR);
374 seq_printf(m, "Vendor\t\t: Freescale Semiconductor\n");
376 root = of_find_node_by_path("/");
378 model = of_get_property(root, "model", NULL);
379 seq_printf(m, "Machine\t\t: %s\n", model);
382 seq_printf(m, "SVR\t\t: 0x%x\n", svid);
383 seq_printf(m, "Memory\t\t: %d MB\n", memsize / (1024 * 1024));
388 * Called very early, device-tree isn't unflattened
390 static int __init mpc86xx_hpcn_probe(void)
392 unsigned long root = of_get_flat_dt_root();
394 if (of_flat_dt_is_compatible(root, "mpc86xx"))
395 return 1; /* Looks good */
402 mpc86xx_restart(char *cmd)
406 rstcr = ioremap(get_immrbase() + MPC86XX_RSTCR_OFFSET, 0x100);
410 /* Assert reset request to Reset Control Register */
411 out_be32(rstcr, 0x2);
418 mpc86xx_time_init(void)
422 /* Set the time base to zero */
426 temp = mfspr(SPRN_HID0);
428 mtspr(SPRN_HID0, temp);
429 asm volatile("isync");
434 define_machine(mpc86xx_hpcn) {
435 .name = "MPC86xx HPCN",
436 .probe = mpc86xx_hpcn_probe,
437 .setup_arch = mpc86xx_hpcn_setup_arch,
438 .init_IRQ = mpc86xx_hpcn_init_irq,
439 .show_cpuinfo = mpc86xx_hpcn_show_cpuinfo,
440 .get_irq = mpic_get_irq,
441 .restart = mpc86xx_restart,
442 .time_init = mpc86xx_time_init,
443 .calibrate_decr = generic_calibrate_decr,
444 .progress = udbg_progress,
445 .pcibios_fixup_bus = fsl_pcibios_fixup_bus,