[POWERPC] 85xx: Port TQM85xx boards over from arch/ppc

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>

3 files changed, 231 insertions, 0 deletions

diff --git a/arch/powerpc/platforms/85xx/Kconfig b/arch/powerpc/platforms/85xx/Kconfig
index 26f9cd52e9f3..7896f0686bca 100644
--- a/arch/powerpc/platforms/85xx/Kconfig
+++ b/arch/powerpc/platforms/85xx/Kconfig
@@ -46,8 +46,47 @@ config STX_GP3
 	select DEFAULT_UIMAGE
 	select PPC_CPM_NEW_BINDING
 
+config TQM8540
+	bool "TQ Components TQM8540"
+	help
+	  This option enables support for the TQ Components TQM8540 board.
+	select DEFAULT_UIMAGE
+	select PPC_CPM_NEW_BINDING
+	select TQM85xx
+
+config TQM8541
+	bool "TQ Components TQM8541"
+	help
+	  This option enables support for the TQ Components TQM8541 board.
+	select DEFAULT_UIMAGE
+	select PPC_CPM_NEW_BINDING
+	select TQM85xx
+	select CPM2
+
+config TQM8555
+	bool "TQ Components TQM8555"
+	help
+	  This option enables support for the TQ Components TQM8555 board.
+	select DEFAULT_UIMAGE
+	select PPC_CPM_NEW_BINDING
+	select TQM85xx
+	select CPM2
+
+config TQM8560
+	bool "TQ Components TQM8560"
+	help
+	  This option enables support for the TQ Components TQM8560 board.
+	select DEFAULT_UIMAGE
+	select PPC_CPM_NEW_BINDING
+	select TQM85xx
+	select CPM2
+
 endchoice
 
+config TQM85xx
+	bool
+	select MPC85xx
+
 config MPC8540
 	bool
 	select PPC_UDBG_16550
diff --git a/arch/powerpc/platforms/85xx/Makefile b/arch/powerpc/platforms/85xx/Makefile
index bf7d2e1c07e7..8c761d1671a1 100644
--- a/arch/powerpc/platforms/85xx/Makefile
+++ b/arch/powerpc/platforms/85xx/Makefile
@@ -7,3 +7,4 @@ obj-$(CONFIG_MPC85xx_CDS) += mpc85xx_cds.o
 obj-$(CONFIG_MPC85xx_DS)  += mpc85xx_ds.o
 obj-$(CONFIG_MPC85xx_MDS) += mpc85xx_mds.o
 obj-$(CONFIG_STX_GP3)	  += stx_gp3.o
+obj-$(CONFIG_TQM85xx)	  += tqm85xx.o
diff --git a/arch/powerpc/platforms/85xx/tqm85xx.c b/arch/powerpc/platforms/85xx/tqm85xx.c
new file mode 100644
index 000000000000..2a08b315e190
--- /dev/null
+++ b/arch/powerpc/platforms/85xx/tqm85xx.c
@@ -0,0 +1,191 @@
+/*
+ * Based on MPC8560 ADS and arch/ppc tqm85xx ports
+ *
+ * Maintained by Kumar Gala (see MAINTAINERS for contact information)
+ *
+ * Copyright 2008 Freescale Semiconductor Inc.
+ *
+ * Copyright (c) 2005-2006 DENX Software Engineering
+ * Stefan Roese <sr@denx.de>
+ *
+ * Based on original work by
+ * 	Kumar Gala <kumar.gala@freescale.com>
+ *      Copyright 2004 Freescale Semiconductor Inc.
+ *
+ * This program is free software; you can redistribute  it and/or modify it
+ * under  the terms of  the GNU General  Public License as published by the
+ * Free Software Foundation;  either version 2 of the  License, or (at your
+ * option) any later version.
+ */
+
+#include <linux/stddef.h>
+#include <linux/kernel.h>
+#include <linux/pci.h>
+#include <linux/kdev_t.h>
+#include <linux/delay.h>
+#include <linux/seq_file.h>
+#include <linux/of_platform.h>
+
+#include <asm/system.h>
+#include <asm/time.h>
+#include <asm/machdep.h>
+#include <asm/pci-bridge.h>
+#include <asm/mpic.h>
+#include <asm/prom.h>
+#include <mm/mmu_decl.h>
+#include <asm/udbg.h>
+
+#include <sysdev/fsl_soc.h>
+#include <sysdev/fsl_pci.h>
+
+#ifdef CONFIG_CPM2
+#include <asm/cpm2.h>
+#include <sysdev/cpm2_pic.h>
+
+static void cpm2_cascade(unsigned int irq, struct irq_desc *desc)
+{
+	int cascade_irq;
+
+	while ((cascade_irq = cpm2_get_irq()) >= 0)
+		generic_handle_irq(cascade_irq);
+
+	desc->chip->eoi(irq);
+}
+#endif /* CONFIG_CPM2 */
+
+static void __init tqm85xx_pic_init(void)
+{
+	struct mpic *mpic;
+	struct resource r;
+	struct device_node *np;
+#ifdef CONFIG_CPM2
+	int irq;
+#endif
+
+	np = of_find_node_by_type(NULL, "open-pic");
+	if (!np) {
+		printk(KERN_ERR "Could not find open-pic node\n");
+		return;
+	}
+
+	if (of_address_to_resource(np, 0, &r)) {
+		printk(KERN_ERR "Could not map mpic register space\n");
+		of_node_put(np);
+		return;
+	}
+
+	mpic = mpic_alloc(np, r.start,
+			MPIC_PRIMARY | MPIC_WANTS_RESET | MPIC_BIG_ENDIAN,
+			0, 256, " OpenPIC  ");
+	BUG_ON(mpic == NULL);
+	of_node_put(np);
+
+	mpic_init(mpic);
+
+#ifdef CONFIG_CPM2
+	/* Setup CPM2 PIC */
+	np = of_find_compatible_node(NULL, NULL, "fsl,cpm2-pic");
+	if (np == NULL) {
+		printk(KERN_ERR "PIC init: can not find fsl,cpm2-pic node\n");
+		return;
+	}
+	irq = irq_of_parse_and_map(np, 0);
+
+	if (irq == NO_IRQ) {
+		of_node_put(np);
+		printk(KERN_ERR "PIC init: got no IRQ for cpm cascade\n");
+		return;
+	}
+
+	cpm2_pic_init(np);
+	of_node_put(np);
+	set_irq_chained_handler(irq, cpm2_cascade);
+#endif
+}
+
+/*
+ * Setup the architecture
+ */
+static void __init tqm85xx_setup_arch(void)
+{
+#ifdef CONFIG_PCI
+	struct device_node *np;
+#endif
+
+	if (ppc_md.progress)
+		ppc_md.progress("tqm85xx_setup_arch()", 0);
+
+#ifdef CONFIG_CPM2
+	cpm2_reset();
+#endif
+
+#ifdef CONFIG_PCI
+	for_each_compatible_node(np, "pci", "fsl,mpc8540-pci")
+		fsl_add_bridge(np, 1);
+#endif
+}
+
+static void tqm85xx_show_cpuinfo(struct seq_file *m)
+{
+	uint pvid, svid, phid1;
+	uint memsize = total_memory;
+
+	pvid = mfspr(SPRN_PVR);
+	svid = mfspr(SPRN_SVR);
+
+	seq_printf(m, "Vendor\t\t: TQ Components\n");
+	seq_printf(m, "PVR\t\t: 0x%x\n", pvid);
+	seq_printf(m, "SVR\t\t: 0x%x\n", svid);
+
+	/* Display cpu Pll setting */
+	phid1 = mfspr(SPRN_HID1);
+	seq_printf(m, "PLL setting\t: 0x%x\n", ((phid1 >> 24) & 0x3f));
+
+	/* Display the amount of memory */
+	seq_printf(m, "Memory\t\t: %d MB\n", memsize / (1024 * 1024));
+}
+
+static struct of_device_id __initdata of_bus_ids[] = {
+	{ .name = "soc", },
+	{ .type = "soc", },
+	{ .name = "cpm", },
+	{ .name = "localbus", },
+	{ .compatible = "simple-bus", },
+	{},
+};
+
+static int __init declare_of_platform_devices(void)
+{
+	of_platform_bus_probe(NULL, of_bus_ids, NULL);
+
+	return 0;
+}
+machine_device_initcall(tqm85xx, declare_of_platform_devices);
+
+/*
+ * Called very early, device-tree isn't unflattened
+ */
+static int __init tqm85xx_probe(void)
+{
+	unsigned long root = of_get_flat_dt_root();
+
+	if ((of_flat_dt_is_compatible(root, "tqm,8540")) ||
+	    (of_flat_dt_is_compatible(root, "tqm,8541")) ||
+	    (of_flat_dt_is_compatible(root, "tqm,8555")) ||
+	    (of_flat_dt_is_compatible(root, "tqm,8560")))
+		return 1;
+
+	return 0;
+}
+
+define_machine(tqm85xx) {
+	.name			= "TQM85xx",
+	.probe			= tqm85xx_probe,
+	.setup_arch		= tqm85xx_setup_arch,
+	.init_IRQ		= tqm85xx_pic_init,
+	.show_cpuinfo		= tqm85xx_show_cpuinfo,
+	.get_irq		= mpic_get_irq,
+	.restart		= fsl_rstcr_restart,
+	.calibrate_decr		= generic_calibrate_decr,
+	.progress		= udbg_progress,
+};