add dts config

hc

2023-12-06 08f87f769b595151be1afeff53e144f543faa614

 kernel/arch/powerpc/platforms/pasemi/setup.c
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@@ -1,3 +1,4 @@
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+// SPDX-License-Identifier: GPL-2.0-only
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 /*
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  * Copyright (C) 2006-2007 PA Semi, Inc
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  *
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@@ -7,19 +8,6 @@
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  * Maintained by: Olof Johansson <olof@lixom.net>
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  *
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  * Based on arch/powerpc/platforms/maple/setup.c
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- *
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- * This program is free software; you can redistribute it and/or modify
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- * it under the terms of the GNU General Public License version 2 as
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- * published by the Free Software Foundation.
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- *
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- * This program is distributed in the hope that it will be useful,
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- * but WITHOUT ANY WARRANTY; without even the implied warranty of
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- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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- * GNU General Public License for more details.
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- *
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- * You should have received a copy of the GNU General Public License
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- * along with this program; if not, write to the Free Software
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- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
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  */
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12
 
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 #include <linux/errno.h>
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@@ -34,6 +22,7 @@
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 #include <asm/prom.h>
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 #include <asm/iommu.h>
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 #include <asm/machdep.h>
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+#include <asm/i8259.h>
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 #include <asm/mpic.h>
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 #include <asm/smp.h>
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 #include <asm/time.h>
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@@ -71,6 +60,40 @@
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 	while (1)
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 		out_le32(reset_reg, 0x6000000);
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 }
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+
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+#ifdef CONFIG_PPC_PASEMI_NEMO
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+void pas_shutdown(void)
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+{
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+	/* Set the PLD bit that makes the SB600 think the power button is being pressed */
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+	void __iomem *pld_map = ioremap(0xf5000000,4096);
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+	while (1)
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+		out_8(pld_map+7,0x01);
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+}
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+
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+/* RTC platform device structure as is not in device tree */
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+static struct resource rtc_resource[] = {{
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+	.name = "rtc",
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+	.start = 0x70,
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+	.end = 0x71,
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+	.flags = IORESOURCE_IO,
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+}, {
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+	.name = "rtc",
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+	.start = 8,
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+	.end = 8,
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+	.flags = IORESOURCE_IRQ,
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+}};
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+
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+static inline void nemo_init_rtc(void)
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+{
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+	platform_device_register_simple("rtc_cmos", -1, rtc_resource, 2);
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+}
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+
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+#else
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+
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+static inline void nemo_init_rtc(void)
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+{
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+}
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+#endif
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 #ifdef CONFIG_SMP
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 static arch_spinlock_t timebase_lock;
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@@ -123,10 +146,6 @@
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 #endif
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 	/* Lookup PCI hosts */
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 	pas_pci_init();
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-
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-#ifdef CONFIG_DUMMY_CONSOLE
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-	conswitchp = &dummy_con;
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-#endif
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 	/* Remap SDC register for doing reset */
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 	/* XXXOJN This should maybe come out of the device tree */
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@@ -182,6 +201,42 @@
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 	return 0;
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 }
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 machine_device_initcall(pasemi, pas_setup_mce_regs);
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+
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+#ifdef CONFIG_PPC_PASEMI_NEMO
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+static void sb600_8259_cascade(struct irq_desc *desc)
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+{
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+	struct irq_chip *chip = irq_desc_get_chip(desc);
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+	unsigned int cascade_irq = i8259_irq();
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+
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+	if (cascade_irq)
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+		generic_handle_irq(cascade_irq);
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+
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+	chip->irq_eoi(&desc->irq_data);
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+}
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+
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+static void nemo_init_IRQ(struct mpic *mpic)
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+{
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+	struct device_node *np;
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+	int gpio_virq;
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+	/* Connect the SB600's legacy i8259 controller */
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+	np = of_find_node_by_path("/pxp@0,e0000000");
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+	i8259_init(np, 0);
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+	of_node_put(np);
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+
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+	gpio_virq = irq_create_mapping(NULL, 3);
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+	irq_set_irq_type(gpio_virq, IRQ_TYPE_LEVEL_HIGH);
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+	irq_set_chained_handler(gpio_virq, sb600_8259_cascade);
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+	mpic_unmask_irq(irq_get_irq_data(gpio_virq));
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+
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+	irq_set_default_host(mpic->irqhost);
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+}
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+
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+#else
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+
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+static inline void nemo_init_IRQ(struct mpic *mpic)
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+{
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+}
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+#endif
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 static __init void pas_init_IRQ(void)
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 {
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@@ -242,6 +297,8 @@
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 		irq_set_irq_type(nmi_virq, IRQ_TYPE_EDGE_RISING);
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 		mpic_unmask_irq(irq_get_irq_data(nmi_virq));
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 	}
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+
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+	nemo_init_IRQ(mpic);
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 	of_node_put(mpic_node);
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 	of_node_put(root);
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@@ -338,55 +395,6 @@
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 	return !!(srr1 & 0x2);
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 }
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-#ifdef CONFIG_PCMCIA
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-static int pcmcia_notify(struct notifier_block *nb, unsigned long action,
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-			 void *data)
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-{
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-	struct device *dev = data;
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-	struct device *parent;
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-	struct pcmcia_device *pdev = to_pcmcia_dev(dev);
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-
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-	/* We are only intereted in device addition */
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-	if (action != BUS_NOTIFY_ADD_DEVICE)
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-		return 0;
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-
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-	parent = pdev->socket->dev.parent;
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-
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-	/* We know electra_cf devices will always have of_node set, since
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-	 * electra_cf is an of_platform driver.
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-	 */
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-	if (!parent->of_node)
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-		return 0;
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-
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-	if (!of_device_is_compatible(parent->of_node, "electra-cf"))
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-		return 0;
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-
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-	/* We use the direct ops for localbus */
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-	dev->dma_ops = &dma_nommu_ops;
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-
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-	return 0;
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-}
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-
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-static struct notifier_block pcmcia_notifier = {
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-	.notifier_call = pcmcia_notify,
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-};
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-
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-static inline void pasemi_pcmcia_init(void)
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-{
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-	extern struct bus_type pcmcia_bus_type;
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-
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-	bus_register_notifier(&pcmcia_bus_type, &pcmcia_notifier);
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-}
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-
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-#else
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-
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-static inline void pasemi_pcmcia_init(void)
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-{
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-}
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-
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-#endif
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-
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-
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 static const struct of_device_id pasemi_bus_ids[] = {
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 	/* Unfortunately needed for legacy firmwares */
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 	{ .type = "localbus", },
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@@ -399,10 +407,10 @@
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 static int __init pasemi_publish_devices(void)
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 {
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-	pasemi_pcmcia_init();
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-
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 	/* Publish OF platform devices for SDC and other non-PCI devices */
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 	of_platform_bus_probe(NULL, pasemi_bus_ids, NULL);
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+
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+	nemo_init_rtc();
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 	return 0;
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 }
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@@ -418,6 +426,17 @@
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 	    !of_machine_is_compatible("pasemi,pwrficient"))
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 		return 0;
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+#ifdef CONFIG_PPC_PASEMI_NEMO
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+	/*
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+	 * Check for the Nemo motherboard here, if we are running on one
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+	 * change the machine definition to fit
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+	 */
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+	if (of_machine_is_compatible("pasemi,nemo")) {
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+		pm_power_off		= pas_shutdown;
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+		ppc_md.name		= "A-EON Amigaone X1000";
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+	}
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+#endif
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+
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 	iommu_init_early_pasemi();
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 	return 1;