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_soc.h>
37 #include "mpc8641_hpcn.h"
42 #define DBG(fmt...) do { printk(KERN_ERR fmt); } while(0)
44 #define DBG(fmt...) do { } while(0)
48 static void mpc86xx_8259_cascade(unsigned int irq, struct irq_desc *desc)
50 unsigned int cascade_irq = i8259_irq();
51 if (cascade_irq != NO_IRQ)
52 generic_handle_irq(cascade_irq);
55 #endif /* CONFIG_PCI */
58 mpc86xx_hpcn_init_irq(void)
61 struct device_node *np;
64 struct device_node *cascade_node = NULL;
68 /* Determine PIC address. */
69 np = of_find_node_by_type(NULL, "open-pic");
72 of_address_to_resource(np, 0, &res);
74 /* Alloc mpic structure and per isu has 16 INT entries. */
75 mpic1 = mpic_alloc(np, res.start,
76 MPIC_PRIMARY | MPIC_WANTS_RESET | MPIC_BIG_ENDIAN,
79 BUG_ON(mpic1 == NULL);
81 mpic_assign_isu(mpic1, 0, res.start + 0x10000);
83 /* 48 Internal Interrupts */
84 mpic_assign_isu(mpic1, 1, res.start + 0x10200);
85 mpic_assign_isu(mpic1, 2, res.start + 0x10400);
86 mpic_assign_isu(mpic1, 3, res.start + 0x10600);
88 /* 16 External interrupts
89 * Moving them from [0 - 15] to [64 - 79]
91 mpic_assign_isu(mpic1, 4, res.start + 0x10000);
96 /* Initialize i8259 controller */
97 for_each_node_by_type(np, "interrupt-controller")
98 if (of_device_is_compatible(np, "chrp,iic")) {
102 if (cascade_node == NULL) {
103 printk(KERN_DEBUG "mpc86xxhpcn: no ISA interrupt controller\n");
107 cascade_irq = irq_of_parse_and_map(cascade_node, 0);
108 if (cascade_irq == NO_IRQ) {
109 printk(KERN_ERR "mpc86xxhpcn: failed to map cascade interrupt");
112 DBG("mpc86xxhpcn: cascade mapped to irq %d\n", cascade_irq);
114 i8259_init(cascade_node, 0);
115 of_node_put(cascade_node);
117 set_irq_chained_handler(cascade_irq, mpc86xx_8259_cascade);
123 enum pirq{PIRQA = 8, PIRQB, PIRQC, PIRQD, PIRQE, PIRQF, PIRQG, PIRQH};
124 const unsigned char uli1575_irq_route_table[16] = {
135 0x3, /* 10: 0b0011 */
136 0x9, /* 11: 0b1001 */
137 0xb, /* 12: 0b1011 */
138 0, /* 13: Reserved */
139 0xd, /* 14, 0b1101 */
140 0xf, /* 15, 0b1111 */
144 get_pci_irq_from_of(struct pci_controller *hose, int slot, int pin)
148 struct device_node *hosenode = hose ? hose->arch_data : NULL;
150 if (!hosenode) return -EINVAL;
152 laddr[0] = (hose->first_busno << 16) | (PCI_DEVFN(slot, 0) << 8);
153 laddr[1] = laddr[2] = 0;
154 of_irq_map_raw(hosenode, &pin, 1, laddr, &oirq);
155 DBG("mpc86xx_hpcn: pci irq addr %x, slot %d, pin %d, irq %d\n",
156 laddr[0], slot, pin, oirq.specifier[0]);
157 return oirq.specifier[0];
160 static void __devinit quirk_uli1575(struct pci_dev *dev)
163 struct pci_controller *hose = pci_bus_to_host(dev->bus);
164 unsigned char irq2pin[16], c;
165 unsigned long pirq_map_word = 0;
170 * ULI1575 interrupts route setup
172 memset(irq2pin, 0, 16); /* Initialize default value 0 */
175 * PIRQA -> PIRQD mapping read from OF-tree
177 * interrupts for PCI slot0 -- PIRQA / PIRQB / PIRQC / PIRQD
178 * PCI slot1 -- PIRQB / PIRQC / PIRQD / PIRQA
180 for (i = 0; i < 4; i++){
181 irq = get_pci_irq_from_of(hose, 17, i + 1);
182 if (irq > 0 && irq < 16)
183 irq2pin[irq] = PIRQA + i;
185 printk(KERN_WARNING "ULI1575 device"
186 "(slot %d, pin %d) irq %d is invalid.\n",
191 * PIRQE -> PIRQF mapping set manually
199 for (i = 0; i < 4; i++) irq2pin[i + 9] = PIRQE + i;
201 /* Set IRQ-PIRQ Mapping to ULI1575 */
202 for (i = 0; i < 16; i++)
204 pirq_map_word |= (uli1575_irq_route_table[i] & 0xf)
205 << ((irq2pin[i] - PIRQA) * 4);
207 /* ULI1575 IRQ mapping conf register default value is 0xb9317542 */
208 DBG("Setup ULI1575 IRQ mapping configuration register value = 0x%x\n",
210 pci_write_config_dword(dev, 0x48, pirq_map_word);
212 #define ULI1575_SET_DEV_IRQ(slot, pin, reg) \
215 irq = get_pci_irq_from_of(hose, slot, pin); \
216 if (irq > 0 && irq < 16) \
217 pci_write_config_byte(dev, reg, irq2pin[irq]); \
219 printk(KERN_WARNING "ULI1575 device" \
220 "(slot %d, pin %d) irq %d is invalid.\n", \
224 /* USB 1.1 OHCI controller 1, slot 28, pin 1 */
225 ULI1575_SET_DEV_IRQ(28, 1, 0x86);
227 /* USB 1.1 OHCI controller 2, slot 28, pin 2 */
228 ULI1575_SET_DEV_IRQ(28, 2, 0x87);
230 /* USB 1.1 OHCI controller 3, slot 28, pin 3 */
231 ULI1575_SET_DEV_IRQ(28, 3, 0x88);
233 /* USB 2.0 controller, slot 28, pin 4 */
234 irq = get_pci_irq_from_of(hose, 28, 4);
235 if (irq >= 0 && irq <=15)
236 pci_write_config_dword(dev, 0x74, uli1575_irq_route_table[irq]);
238 /* Audio controller, slot 29, pin 1 */
239 ULI1575_SET_DEV_IRQ(29, 1, 0x8a);
241 /* Modem controller, slot 29, pin 2 */
242 ULI1575_SET_DEV_IRQ(29, 2, 0x8b);
244 /* HD audio controller, slot 29, pin 3 */
245 ULI1575_SET_DEV_IRQ(29, 3, 0x8c);
247 /* SMB interrupt: slot 30, pin 1 */
248 ULI1575_SET_DEV_IRQ(30, 1, 0x8e);
250 /* PMU ACPI SCI interrupt: slot 30, pin 2 */
251 ULI1575_SET_DEV_IRQ(30, 2, 0x8f);
253 /* Serial ATA interrupt: slot 31, pin 1 */
254 ULI1575_SET_DEV_IRQ(31, 1, 0x8d);
256 /* Primary PATA IDE IRQ: 14
257 * Secondary PATA IDE IRQ: 15
259 pci_write_config_byte(dev, 0x44, 0x30 | uli1575_irq_route_table[14]);
260 pci_write_config_byte(dev, 0x75, uli1575_irq_route_table[15]);
262 /* Set IRQ14 and IRQ15 to legacy IRQs */
263 pci_read_config_word(dev, 0x46, &temp);
265 pci_write_config_word(dev, 0x46, temp);
267 /* Set i8259 interrupt trigger
283 #undef ULI1575_SET_DEV_IRQ
285 /* Disable the HD interface and enable the AC97 interface. */
286 pci_read_config_byte(dev, 0xb8, &c);
288 pci_write_config_byte(dev, 0xb8, c);
291 static void __devinit quirk_uli5288(struct pci_dev *dev)
295 pci_read_config_byte(dev,0x83,&c);
297 pci_write_config_byte(dev, 0x83, c);
299 pci_write_config_byte(dev, 0x09, 0x01);
300 pci_write_config_byte(dev, 0x0a, 0x06);
302 pci_read_config_byte(dev,0x83,&c);
304 pci_write_config_byte(dev, 0x83, c);
306 pci_read_config_byte(dev,0x84,&c);
308 pci_write_config_byte(dev, 0x84, c);
311 static void __devinit quirk_uli5229(struct pci_dev *dev)
314 pci_write_config_word(dev, 0x04, 0x0405);
315 pci_read_config_word(dev, 0x4a, &temp);
317 pci_write_config_word(dev, 0x4a, temp);
320 static void __devinit early_uli5249(struct pci_dev *dev)
323 pci_write_config_word(dev, 0x04, 0x0007);
324 pci_read_config_byte(dev, 0x7c, &temp);
325 pci_write_config_byte(dev, 0x7c, 0x80);
326 pci_write_config_byte(dev, 0x09, 0x01);
327 pci_write_config_byte(dev, 0x7c, temp);
331 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AL, 0x1575, quirk_uli1575);
332 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AL, 0x5288, quirk_uli5288);
333 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AL, 0x5229, quirk_uli5229);
334 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_AL, 0x5249, early_uli5249);
335 #endif /* CONFIG_PCI */
339 mpc86xx_hpcn_setup_arch(void)
341 struct device_node *np;
344 ppc_md.progress("mpc86xx_hpcn_setup_arch()", 0);
346 np = of_find_node_by_type(NULL, "cpu");
348 const unsigned int *fp;
350 fp = of_get_property(np, "clock-frequency", NULL);
352 loops_per_jiffy = *fp / HZ;
354 loops_per_jiffy = 50000000 / HZ;
359 for (np = NULL; (np = of_find_node_by_type(np, "pci")) != NULL;)
360 mpc86xx_add_bridge(np);
362 ppc_md.pci_exclude_device = mpc86xx_exclude_device;
365 printk("MPC86xx HPCN board from Freescale Semiconductor\n");
374 mpc86xx_hpcn_show_cpuinfo(struct seq_file *m)
376 struct device_node *root;
377 uint memsize = total_memory;
378 const char *model = "";
379 uint svid = mfspr(SPRN_SVR);
381 seq_printf(m, "Vendor\t\t: Freescale Semiconductor\n");
383 root = of_find_node_by_path("/");
385 model = of_get_property(root, "model", NULL);
386 seq_printf(m, "Machine\t\t: %s\n", model);
389 seq_printf(m, "SVR\t\t: 0x%x\n", svid);
390 seq_printf(m, "Memory\t\t: %d MB\n", memsize / (1024 * 1024));
395 * Called very early, device-tree isn't unflattened
397 static int __init mpc86xx_hpcn_probe(void)
399 unsigned long root = of_get_flat_dt_root();
401 if (of_flat_dt_is_compatible(root, "mpc86xx"))
402 return 1; /* Looks good */
409 mpc86xx_restart(char *cmd)
413 rstcr = ioremap(get_immrbase() + MPC86XX_RSTCR_OFFSET, 0x100);
417 /* Assert reset request to Reset Control Register */
418 out_be32(rstcr, 0x2);
425 mpc86xx_time_init(void)
429 /* Set the time base to zero */
433 temp = mfspr(SPRN_HID0);
435 mtspr(SPRN_HID0, temp);
436 asm volatile("isync");
442 define_machine(mpc86xx_hpcn) {
443 .name = "MPC86xx HPCN",
444 .probe = mpc86xx_hpcn_probe,
445 .setup_arch = mpc86xx_hpcn_setup_arch,
446 .init_IRQ = mpc86xx_hpcn_init_irq,
447 .show_cpuinfo = mpc86xx_hpcn_show_cpuinfo,
448 .get_irq = mpic_get_irq,
449 .restart = mpc86xx_restart,
450 .time_init = mpc86xx_time_init,
451 .calibrate_decr = generic_calibrate_decr,
452 .progress = udbg_progress,