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Diffstat (limited to 'arch/powerpc/platforms/pasemi/setup.c')
-rw-r--r--arch/powerpc/platforms/pasemi/setup.c242
1 files changed, 125 insertions, 117 deletions
diff --git a/arch/powerpc/platforms/pasemi/setup.c b/arch/powerpc/platforms/pasemi/setup.c
index 8c54de6d8ec4..d03b41336901 100644
--- a/arch/powerpc/platforms/pasemi/setup.c
+++ b/arch/powerpc/platforms/pasemi/setup.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (C) 2006-2007 PA Semi, Inc
*
@@ -7,19 +8,6 @@
* Maintained by: Olof Johansson <olof@lixom.net>
*
* Based on arch/powerpc/platforms/maple/setup.c
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <linux/errno.h>
@@ -28,12 +16,15 @@
#include <linux/console.h>
#include <linux/export.h>
#include <linux/pci.h>
+#include <linux/of.h>
#include <linux/of_platform.h>
+#include <linux/platform_device.h>
#include <linux/gfp.h>
+#include <linux/irqdomain.h>
-#include <asm/prom.h>
#include <asm/iommu.h>
#include <asm/machdep.h>
+#include <asm/i8259.h>
#include <asm/mpic.h>
#include <asm/smp.h>
#include <asm/time.h>
@@ -59,10 +50,10 @@ struct mce_regs {
static struct mce_regs mce_regs[MAX_MCE_REGS];
static int num_mce_regs;
-static int nmi_virq = NO_IRQ;
+static int nmi_virq = 0;
-static void pas_restart(char *cmd)
+static void __noreturn pas_restart(char *cmd)
{
/* Need to put others cpu in hold loop so they're not sleeping */
smp_send_stop();
@@ -72,6 +63,40 @@ static void pas_restart(char *cmd)
out_le32(reset_reg, 0x6000000);
}
+#ifdef CONFIG_PPC_PASEMI_NEMO
+static void pas_shutdown(void)
+{
+ /* Set the PLD bit that makes the SB600 think the power button is being pressed */
+ void __iomem *pld_map = ioremap(0xf5000000,4096);
+ while (1)
+ out_8(pld_map+7,0x01);
+}
+
+/* RTC platform device structure as is not in device tree */
+static struct resource rtc_resource[] = {{
+ .name = "rtc",
+ .start = 0x70,
+ .end = 0x71,
+ .flags = IORESOURCE_IO,
+}, {
+ .name = "rtc",
+ .start = 8,
+ .end = 8,
+ .flags = IORESOURCE_IRQ,
+}};
+
+static inline void nemo_init_rtc(void)
+{
+ platform_device_register_simple("rtc_cmos", -1, rtc_resource, 2);
+}
+
+#else
+
+static inline void nemo_init_rtc(void)
+{
+}
+#endif
+
#ifdef CONFIG_SMP
static arch_spinlock_t timebase_lock;
static unsigned long timebase;
@@ -105,7 +130,7 @@ static void pas_take_timebase(void)
arch_spin_unlock(&timebase_lock);
}
-struct smp_ops_t pas_smp_ops = {
+static struct smp_ops_t pas_smp_ops = {
.probe = smp_mpic_probe,
.message_pass = smp_mpic_message_pass,
.kick_cpu = smp_generic_kick_cpu,
@@ -115,18 +140,12 @@ struct smp_ops_t pas_smp_ops = {
};
#endif /* CONFIG_SMP */
-void __init pas_setup_arch(void)
+static void __init pas_setup_arch(void)
{
#ifdef CONFIG_SMP
/* Setup SMP callback */
smp_ops = &pas_smp_ops;
#endif
- /* Lookup PCI hosts */
- pas_pci_init();
-
-#ifdef CONFIG_DUMMY_CONSOLE
- conswitchp = &dummy_con;
-#endif
/* Remap SDC register for doing reset */
/* XXXOJN This should maybe come out of the device tree */
@@ -183,6 +202,42 @@ static int __init pas_setup_mce_regs(void)
}
machine_device_initcall(pasemi, pas_setup_mce_regs);
+#ifdef CONFIG_PPC_PASEMI_NEMO
+static void sb600_8259_cascade(struct irq_desc *desc)
+{
+ struct irq_chip *chip = irq_desc_get_chip(desc);
+ unsigned int cascade_irq = i8259_irq();
+
+ if (cascade_irq)
+ generic_handle_irq(cascade_irq);
+
+ chip->irq_eoi(&desc->irq_data);
+}
+
+static void __init nemo_init_IRQ(struct mpic *mpic)
+{
+ struct device_node *np;
+ int gpio_virq;
+ /* Connect the SB600's legacy i8259 controller */
+ np = of_find_node_by_path("/pxp@0,e0000000");
+ i8259_init(np, 0);
+ of_node_put(np);
+
+ gpio_virq = irq_create_mapping(NULL, 3);
+ irq_set_irq_type(gpio_virq, IRQ_TYPE_LEVEL_HIGH);
+ irq_set_chained_handler(gpio_virq, sb600_8259_cascade);
+ mpic_unmask_irq(irq_get_irq_data(gpio_virq));
+
+ irq_set_default_domain(mpic->irqhost);
+}
+
+#else
+
+static inline void nemo_init_IRQ(struct mpic *mpic)
+{
+}
+#endif
+
static __init void pas_init_IRQ(void)
{
struct device_node *np;
@@ -207,8 +262,7 @@ static __init void pas_init_IRQ(void)
break;
}
if (!mpic_node) {
- printk(KERN_ERR
- "Failed to locate the MPIC interrupt controller\n");
+ pr_err("Failed to locate the MPIC interrupt controller\n");
return;
}
@@ -217,12 +271,12 @@ static __init void pas_init_IRQ(void)
naddr = of_n_addr_cells(root);
opprop = of_get_property(root, "platform-open-pic", &opplen);
if (!opprop) {
- printk(KERN_ERR "No platform-open-pic property.\n");
+ pr_err("No platform-open-pic property.\n");
of_node_put(root);
return;
}
openpic_addr = of_read_number(opprop, naddr);
- printk(KERN_DEBUG "OpenPIC addr: %lx\n", openpic_addr);
+ pr_debug("OpenPIC addr: %lx\n", openpic_addr);
mpic_flags = MPIC_LARGE_VECTORS | MPIC_NO_BIAS | MPIC_NO_RESET;
@@ -244,6 +298,8 @@ static __init void pas_init_IRQ(void)
mpic_unmask_irq(irq_get_irq_data(nmi_virq));
}
+ nemo_init_IRQ(mpic);
+
of_node_put(mpic_node);
of_node_put(root);
}
@@ -264,73 +320,73 @@ static int pas_machine_check_handler(struct pt_regs *regs)
srr0 = regs->nip;
srr1 = regs->msr;
- if (nmi_virq != NO_IRQ && mpic_get_mcirq() == nmi_virq) {
- printk(KERN_ERR "NMI delivered\n");
+ if (nmi_virq && mpic_get_mcirq() == nmi_virq) {
+ pr_err("NMI delivered\n");
debugger(regs);
mpic_end_irq(irq_get_irq_data(nmi_virq));
goto out;
}
dsisr = mfspr(SPRN_DSISR);
- printk(KERN_ERR "Machine Check on CPU %d\n", cpu);
- printk(KERN_ERR "SRR0 0x%016lx SRR1 0x%016lx\n", srr0, srr1);
- printk(KERN_ERR "DSISR 0x%016lx DAR 0x%016lx\n", dsisr, regs->dar);
- printk(KERN_ERR "BER 0x%016lx MER 0x%016lx\n", mfspr(SPRN_PA6T_BER),
+ pr_err("Machine Check on CPU %d\n", cpu);
+ pr_err("SRR0 0x%016lx SRR1 0x%016lx\n", srr0, srr1);
+ pr_err("DSISR 0x%016lx DAR 0x%016lx\n", dsisr, regs->dar);
+ pr_err("BER 0x%016lx MER 0x%016lx\n", mfspr(SPRN_PA6T_BER),
mfspr(SPRN_PA6T_MER));
- printk(KERN_ERR "IER 0x%016lx DER 0x%016lx\n", mfspr(SPRN_PA6T_IER),
+ pr_err("IER 0x%016lx DER 0x%016lx\n", mfspr(SPRN_PA6T_IER),
mfspr(SPRN_PA6T_DER));
- printk(KERN_ERR "Cause:\n");
+ pr_err("Cause:\n");
if (srr1 & 0x200000)
- printk(KERN_ERR "Signalled by SDC\n");
+ pr_err("Signalled by SDC\n");
if (srr1 & 0x100000) {
- printk(KERN_ERR "Load/Store detected error:\n");
+ pr_err("Load/Store detected error:\n");
if (dsisr & 0x8000)
- printk(KERN_ERR "D-cache ECC double-bit error or bus error\n");
+ pr_err("D-cache ECC double-bit error or bus error\n");
if (dsisr & 0x4000)
- printk(KERN_ERR "LSU snoop response error\n");
+ pr_err("LSU snoop response error\n");
if (dsisr & 0x2000) {
- printk(KERN_ERR "MMU SLB multi-hit or invalid B field\n");
+ pr_err("MMU SLB multi-hit or invalid B field\n");
dump_slb = 1;
}
if (dsisr & 0x1000)
- printk(KERN_ERR "Recoverable Duptags\n");
+ pr_err("Recoverable Duptags\n");
if (dsisr & 0x800)
- printk(KERN_ERR "Recoverable D-cache parity error count overflow\n");
+ pr_err("Recoverable D-cache parity error count overflow\n");
if (dsisr & 0x400)
- printk(KERN_ERR "TLB parity error count overflow\n");
+ pr_err("TLB parity error count overflow\n");
}
if (srr1 & 0x80000)
- printk(KERN_ERR "Bus Error\n");
+ pr_err("Bus Error\n");
if (srr1 & 0x40000) {
- printk(KERN_ERR "I-side SLB multiple hit\n");
+ pr_err("I-side SLB multiple hit\n");
dump_slb = 1;
}
if (srr1 & 0x20000)
- printk(KERN_ERR "I-cache parity error hit\n");
+ pr_err("I-cache parity error hit\n");
if (num_mce_regs == 0)
- printk(KERN_ERR "No MCE registers mapped yet, can't dump\n");
+ pr_err("No MCE registers mapped yet, can't dump\n");
else
- printk(KERN_ERR "SoC debug registers:\n");
+ pr_err("SoC debug registers:\n");
for (i = 0; i < num_mce_regs; i++)
- printk(KERN_ERR "%s: 0x%08x\n", mce_regs[i].name,
+ pr_err("%s: 0x%08x\n", mce_regs[i].name,
in_le32(mce_regs[i].addr));
if (dump_slb) {
unsigned long e, v;
int i;
- printk(KERN_ERR "slb contents:\n");
+ pr_err("slb contents:\n");
for (i = 0; i < mmu_slb_size; i++) {
asm volatile("slbmfee %0,%1" : "=r" (e) : "r" (i));
asm volatile("slbmfev %0,%1" : "=r" (v) : "r" (i));
- printk(KERN_ERR "%02d %016lx %016lx\n", i, e, v);
+ pr_err("%02d %016lx %016lx\n", i, e, v);
}
}
@@ -339,61 +395,7 @@ out:
return !!(srr1 & 0x2);
}
-static void __init pas_init_early(void)
-{
- iommu_init_early_pasemi();
-}
-
-#ifdef CONFIG_PCMCIA
-static int pcmcia_notify(struct notifier_block *nb, unsigned long action,
- void *data)
-{
- struct device *dev = data;
- struct device *parent;
- struct pcmcia_device *pdev = to_pcmcia_dev(dev);
-
- /* We are only intereted in device addition */
- if (action != BUS_NOTIFY_ADD_DEVICE)
- return 0;
-
- parent = pdev->socket->dev.parent;
-
- /* We know electra_cf devices will always have of_node set, since
- * electra_cf is an of_platform driver.
- */
- if (!parent->of_node)
- return 0;
-
- if (!of_device_is_compatible(parent->of_node, "electra-cf"))
- return 0;
-
- /* We use the direct ops for localbus */
- dev->archdata.dma_ops = &dma_direct_ops;
-
- return 0;
-}
-
-static struct notifier_block pcmcia_notifier = {
- .notifier_call = pcmcia_notify,
-};
-
-static inline void pasemi_pcmcia_init(void)
-{
- extern struct bus_type pcmcia_bus_type;
-
- bus_register_notifier(&pcmcia_bus_type, &pcmcia_notifier);
-}
-
-#else
-
-static inline void pasemi_pcmcia_init(void)
-{
-}
-
-#endif
-
-
-static struct of_device_id pasemi_bus_ids[] = {
+static const struct of_device_id pasemi_bus_ids[] = {
/* Unfortunately needed for legacy firmwares */
{ .type = "localbus", },
{ .type = "sdc", },
@@ -405,11 +407,11 @@ static struct of_device_id pasemi_bus_ids[] = {
static int __init pasemi_publish_devices(void)
{
- pasemi_pcmcia_init();
-
/* Publish OF platform devices for SDC and other non-PCI devices */
of_platform_bus_probe(NULL, pasemi_bus_ids, NULL);
+ nemo_init_rtc();
+
return 0;
}
machine_device_initcall(pasemi, pasemi_publish_devices);
@@ -420,15 +422,22 @@ machine_device_initcall(pasemi, pasemi_publish_devices);
*/
static int __init pas_probe(void)
{
- unsigned long root = of_get_flat_dt_root();
-
- if (!of_flat_dt_is_compatible(root, "PA6T-1682M") &&
- !of_flat_dt_is_compatible(root, "pasemi,pwrficient"))
+ if (!of_machine_is_compatible("PA6T-1682M") &&
+ !of_machine_is_compatible("pasemi,pwrficient"))
return 0;
- hpte_init_native();
+#ifdef CONFIG_PPC_PASEMI_NEMO
+ /*
+ * Check for the Nemo motherboard here, if we are running on one
+ * change the machine definition to fit
+ */
+ if (of_machine_is_compatible("pasemi,nemo")) {
+ pm_power_off = pas_shutdown;
+ ppc_md.name = "A-EON Amigaone X1000";
+ }
+#endif
- alloc_iobmap_l2();
+ iommu_init_early_pasemi();
return 1;
}
@@ -437,12 +446,11 @@ define_machine(pasemi) {
.name = "PA Semi PWRficient",
.probe = pas_probe,
.setup_arch = pas_setup_arch,
- .init_early = pas_init_early,
+ .discover_phbs = pas_pci_init,
.init_IRQ = pas_init_IRQ,
.get_irq = mpic_get_irq,
.restart = pas_restart,
.get_boot_time = pas_get_boot_time,
- .calibrate_decr = generic_calibrate_decr,
.progress = pas_progress,
.machine_check_exception = pas_machine_check_handler,
};
generated by cgit (git 2.34.1) at 2025-12-25 10:17:26 +0000