2 * Copyright (C) 2006-2007 PA Semi, Inc
4 * Authors: Kip Walker, PA Semi
5 * Olof Johansson, PA Semi
7 * Maintained by: Olof Johansson <olof@lixom.net>
9 * Based on arch/powerpc/platforms/maple/setup.c
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License version 2 as
13 * published by the Free Software Foundation.
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
25 #include <linux/errno.h>
26 #include <linux/kernel.h>
27 #include <linux/delay.h>
28 #include <linux/console.h>
29 #include <linux/pci.h>
32 #include <asm/system.h>
33 #include <asm/iommu.h>
34 #include <asm/machdep.h>
38 #include <asm/of_platform.h>
40 #include <pcmcia/ss.h>
41 #include <pcmcia/cistpl.h>
42 #include <pcmcia/ds.h>
46 /* SDC reset register, must be pre-mapped at reset time */
47 static void __iomem *reset_reg;
49 /* Various error status registers, must be pre-mapped at MCE time */
51 #define MAX_MCE_REGS 32
57 static struct mce_regs mce_regs[MAX_MCE_REGS];
58 static int num_mce_regs;
61 static void pas_restart(char *cmd)
63 printk("Restarting...\n");
65 out_le32(reset_reg, 0x6000000);
69 static DEFINE_SPINLOCK(timebase_lock);
70 static unsigned long timebase;
72 static void __devinit pas_give_timebase(void)
74 spin_lock(&timebase_lock);
75 mtspr(SPRN_TBCTL, TBCTL_FREEZE);
78 spin_unlock(&timebase_lock);
82 mtspr(SPRN_TBCTL, TBCTL_RESTART);
85 static void __devinit pas_take_timebase(void)
90 spin_lock(&timebase_lock);
91 set_tb(timebase >> 32, timebase & 0xffffffff);
93 spin_unlock(&timebase_lock);
96 struct smp_ops_t pas_smp_ops = {
97 .probe = smp_mpic_probe,
98 .message_pass = smp_mpic_message_pass,
99 .kick_cpu = smp_generic_kick_cpu,
100 .setup_cpu = smp_mpic_setup_cpu,
101 .give_timebase = pas_give_timebase,
102 .take_timebase = pas_take_timebase,
104 #endif /* CONFIG_SMP */
106 void __init pas_setup_arch(void)
109 /* Setup SMP callback */
110 smp_ops = &pas_smp_ops;
112 /* Lookup PCI hosts */
115 #ifdef CONFIG_DUMMY_CONSOLE
116 conswitchp = &dummy_con;
119 /* Remap SDC register for doing reset */
120 /* XXXOJN This should maybe come out of the device tree */
121 reset_reg = ioremap(0xfc101100, 4);
124 static int __init pas_setup_mce_regs(void)
129 if (!machine_is(pasemi))
132 /* Remap various SoC status registers for use by the MCE handler */
136 dev = pci_get_device(PCI_VENDOR_ID_PASEMI, 0xa00a, NULL);
137 while (dev && reg < MAX_MCE_REGS) {
138 mce_regs[reg].name = kasprintf(GFP_KERNEL,
139 "mc%d_mcdebug_errsta", reg);
140 mce_regs[reg].addr = pasemi_pci_getcfgaddr(dev, 0x730);
141 dev = pci_get_device(PCI_VENDOR_ID_PASEMI, 0xa00a, dev);
145 dev = pci_get_device(PCI_VENDOR_ID_PASEMI, 0xa001, NULL);
146 if (dev && reg+4 < MAX_MCE_REGS) {
147 mce_regs[reg].name = "iobdbg_IntStatus1";
148 mce_regs[reg].addr = pasemi_pci_getcfgaddr(dev, 0x438);
150 mce_regs[reg].name = "iobdbg_IOCTbusIntDbgReg";
151 mce_regs[reg].addr = pasemi_pci_getcfgaddr(dev, 0x454);
153 mce_regs[reg].name = "iobiom_IntStatus";
154 mce_regs[reg].addr = pasemi_pci_getcfgaddr(dev, 0xc10);
156 mce_regs[reg].name = "iobiom_IntDbgReg";
157 mce_regs[reg].addr = pasemi_pci_getcfgaddr(dev, 0xc1c);
161 dev = pci_get_device(PCI_VENDOR_ID_PASEMI, 0xa009, NULL);
162 if (dev && reg+2 < MAX_MCE_REGS) {
163 mce_regs[reg].name = "l2csts_IntStatus";
164 mce_regs[reg].addr = pasemi_pci_getcfgaddr(dev, 0x200);
166 mce_regs[reg].name = "l2csts_Cnt";
167 mce_regs[reg].addr = pasemi_pci_getcfgaddr(dev, 0x214);
175 device_initcall(pas_setup_mce_regs);
177 static __init void pas_init_IRQ(void)
179 struct device_node *np;
180 struct device_node *root, *mpic_node;
181 unsigned long openpic_addr;
182 const unsigned int *opprop;
188 for_each_node_by_type(np, "interrupt-controller")
189 if (of_device_is_compatible(np, "open-pic")) {
194 for_each_node_by_type(np, "open-pic") {
200 "Failed to locate the MPIC interrupt controller\n");
204 /* Find address list in /platform-open-pic */
205 root = of_find_node_by_path("/");
206 naddr = of_n_addr_cells(root);
207 opprop = of_get_property(root, "platform-open-pic", &opplen);
209 printk(KERN_ERR "No platform-open-pic property.\n");
213 openpic_addr = of_read_number(opprop, naddr);
214 printk(KERN_DEBUG "OpenPIC addr: %lx\n", openpic_addr);
216 mpic = mpic_alloc(mpic_node, openpic_addr,
217 MPIC_PRIMARY|MPIC_LARGE_VECTORS,
221 mpic_assign_isu(mpic, 0, openpic_addr + 0x10000);
223 of_node_put(mpic_node);
227 static void __init pas_progress(char *s, unsigned short hex)
229 printk("[%04x] : %s\n", hex, s ? s : "");
233 static int pas_machine_check_handler(struct pt_regs *regs)
235 int cpu = smp_processor_id();
236 unsigned long srr0, srr1, dsisr;
242 dsisr = mfspr(SPRN_DSISR);
243 printk(KERN_ERR "Machine Check on CPU %d\n", cpu);
244 printk(KERN_ERR "SRR0 0x%016lx SRR1 0x%016lx\n", srr0, srr1);
245 printk(KERN_ERR "DSISR 0x%016lx DAR 0x%016lx\n", dsisr, regs->dar);
246 printk(KERN_ERR "BER 0x%016lx MER 0x%016lx\n", mfspr(SPRN_PA6T_BER),
247 mfspr(SPRN_PA6T_MER));
248 printk(KERN_ERR "IER 0x%016lx DER 0x%016lx\n", mfspr(SPRN_PA6T_IER),
249 mfspr(SPRN_PA6T_DER));
250 printk(KERN_ERR "Cause:\n");
253 printk(KERN_ERR "Signalled by SDC\n");
255 if (srr1 & 0x100000) {
256 printk(KERN_ERR "Load/Store detected error:\n");
258 printk(KERN_ERR "D-cache ECC double-bit error or bus error\n");
260 printk(KERN_ERR "LSU snoop response error\n");
261 if (dsisr & 0x2000) {
262 printk(KERN_ERR "MMU SLB multi-hit or invalid B field\n");
266 printk(KERN_ERR "Recoverable Duptags\n");
268 printk(KERN_ERR "Recoverable D-cache parity error count overflow\n");
270 printk(KERN_ERR "TLB parity error count overflow\n");
274 printk(KERN_ERR "Bus Error\n");
276 if (srr1 & 0x40000) {
277 printk(KERN_ERR "I-side SLB multiple hit\n");
282 printk(KERN_ERR "I-cache parity error hit\n");
284 if (num_mce_regs == 0)
285 printk(KERN_ERR "No MCE registers mapped yet, can't dump\n");
287 printk(KERN_ERR "SoC debug registers:\n");
289 for (i = 0; i < num_mce_regs; i++)
290 printk(KERN_ERR "%s: 0x%08x\n", mce_regs[i].name,
291 in_le32(mce_regs[i].addr));
297 printk(KERN_ERR "slb contents:\n");
298 for (i = 0; i < SLB_NUM_ENTRIES; i++) {
299 asm volatile("slbmfee %0,%1" : "=r" (e) : "r" (i));
300 asm volatile("slbmfev %0,%1" : "=r" (v) : "r" (i));
301 printk(KERN_ERR "%02d %016lx %016lx\n", i, e, v);
306 /* SRR1[62] is from MSR[62] if recoverable, so pass that back */
307 return !!(srr1 & 0x2);
310 static void __init pas_init_early(void)
312 iommu_init_early_pasemi();
316 static int pcmcia_notify(struct notifier_block *nb, unsigned long action,
319 struct device *dev = data;
320 struct device *parent;
321 struct pcmcia_device *pdev = to_pcmcia_dev(dev);
323 /* We are only intereted in device addition */
324 if (action != BUS_NOTIFY_ADD_DEVICE)
327 parent = pdev->socket->dev.parent;
329 /* We know electra_cf devices will always have of_node set, since
330 * electra_cf is an of_platform driver.
332 if (!parent->archdata.of_node)
335 if (!of_device_is_compatible(parent->archdata.of_node, "electra-cf"))
338 /* We use the direct ops for localbus */
339 dev->archdata.dma_ops = &dma_direct_ops;
344 static struct notifier_block pcmcia_notifier = {
345 .notifier_call = pcmcia_notify,
348 static inline void pasemi_pcmcia_init(void)
350 extern struct bus_type pcmcia_bus_type;
352 bus_register_notifier(&pcmcia_bus_type, &pcmcia_notifier);
357 static inline void pasemi_pcmcia_init(void)
364 static struct of_device_id pasemi_bus_ids[] = {
365 { .type = "localbus", },
370 static int __init pasemi_publish_devices(void)
372 if (!machine_is(pasemi))
375 pasemi_pcmcia_init();
377 /* Publish OF platform devices for SDC and other non-PCI devices */
378 of_platform_bus_probe(NULL, pasemi_bus_ids, NULL);
382 device_initcall(pasemi_publish_devices);
386 * Called very early, MMU is off, device-tree isn't unflattened
388 static int __init pas_probe(void)
390 unsigned long root = of_get_flat_dt_root();
392 if (!of_flat_dt_is_compatible(root, "PA6T-1682M"))
402 define_machine(pasemi) {
403 .name = "PA Semi PA6T-1682M",
405 .setup_arch = pas_setup_arch,
406 .init_early = pas_init_early,
407 .init_IRQ = pas_init_IRQ,
408 .get_irq = mpic_get_irq,
409 .restart = pas_restart,
410 .get_boot_time = pas_get_boot_time,
411 .calibrate_decr = generic_calibrate_decr,
412 .progress = pas_progress,
413 .machine_check_exception = pas_machine_check_handler,