[POWERPC] Celleb: basic support

This patch adds base support for Celleb platform.

Signed-off-by: Kou Ishizaki <kou.ishizaki@toshiba.co.jp>
Acked-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>

1 files changed, 191 insertions, 0 deletions

diff --git a/arch/powerpc/platforms/celleb/setup.c b/arch/powerpc/platforms/celleb/setup.c
new file mode 100644
index 000000000000..1de63acfda87
--- /dev/null
+++ b/arch/powerpc/platforms/celleb/setup.c
@@ -0,0 +1,191 @@
+/*
+ * Celleb setup code
+ *
+ * (C) Copyright 2006-2007 TOSHIBA CORPORATION
+ *
+ * This code is based on arch/powerpc/platforms/cell/setup.c:
+ *  Copyright (C) 1995  Linus Torvalds
+ *  Adapted from 'alpha' version by Gary Thomas
+ *  Modified by Cort Dougan (cort@cs.nmt.edu)
+ *  Modified by PPC64 Team, IBM Corp
+ *  Modified by Cell Team, IBM Deutschland Entwicklung GmbH
+ *
+ * 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.
+ *
+ * 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.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#undef DEBUG
+
+#include <linux/cpu.h>
+#include <linux/sched.h>
+#include <linux/kernel.h>
+#include <linux/mm.h>
+#include <linux/stddef.h>
+#include <linux/unistd.h>
+#include <linux/reboot.h>
+#include <linux/init.h>
+#include <linux/delay.h>
+#include <linux/irq.h>
+#include <linux/seq_file.h>
+#include <linux/root_dev.h>
+#include <linux/console.h>
+
+#include <asm/mmu.h>
+#include <asm/processor.h>
+#include <asm/io.h>
+#include <asm/kexec.h>
+#include <asm/prom.h>
+#include <asm/machdep.h>
+#include <asm/cputable.h>
+#include <asm/irq.h>
+#include <asm/spu_priv1.h>
+#include <asm/firmware.h>
+#include <asm/of_platform.h>
+
+#include "interrupt.h"
+#include "beat_wrapper.h"
+#include "beat.h"
+#include "pci.h"
+
+static char celleb_machine_type[128] = "Celleb";
+
+static void celleb_show_cpuinfo(struct seq_file *m)
+{
+	struct device_node *root;
+	const char *model = "";
+
+	root = of_find_node_by_path("/");
+	if (root)
+		model = get_property(root, "model", NULL);
+	/* using "CHRP" is to trick anaconda into installing FCx into Celleb */
+	seq_printf(m, "machine\t\t: %s %s\n", celleb_machine_type, model);
+	of_node_put(root);
+}
+
+static int celleb_machine_type_hack(char *ptr)
+{
+	strncpy(celleb_machine_type, ptr, sizeof(celleb_machine_type));
+	celleb_machine_type[sizeof(celleb_machine_type)-1] = 0;
+	return 0;
+}
+
+__setup("celleb_machine_type_hack", celleb_machine_type_hack);
+
+static void celleb_progress(char *s, unsigned short hex)
+{
+	printk("*** %04x : %s\n", hex, s ? s : "");
+}
+
+static void __init celleb_setup_arch(void)
+{
+#ifdef CONFIG_SPU_BASE
+	spu_priv1_ops = &spu_priv1_beat_ops;
+	spu_management_ops = &spu_management_of_ops;
+#endif
+
+#ifdef CONFIG_SMP
+	smp_init_celleb();
+#endif
+
+	/* init to some ~sane value until calibrate_delay() runs */
+	loops_per_jiffy = 50000000;
+
+	if (ROOT_DEV == 0) {
+		printk("No ramdisk, default root is /dev/hda2\n");
+		ROOT_DEV = Root_HDA2;
+	}
+
+#ifdef CONFIG_DUMMY_CONSOLE
+	conswitchp = &dummy_con;
+#endif
+}
+
+static void beat_power_save(void)
+{
+	beat_pause(0);
+}
+
+static int __init celleb_probe(void)
+{
+	unsigned long root = of_get_flat_dt_root();
+
+	if (!of_flat_dt_is_compatible(root, "Beat"))
+		return 0;
+
+	powerpc_firmware_features |= FW_FEATURE_CELLEB_POSSIBLE;
+	hpte_init_beat();
+	return 1;
+}
+
+/*
+ * Cell has no legacy IO; anything calling this function has to
+ * fail or bad things will happen
+ */
+static int celleb_check_legacy_ioport(unsigned int baseport)
+{
+	return -ENODEV;
+}
+
+static void celleb_kexec_cpu_down(int crash, int secondary)
+{
+	beatic_deinit_IRQ();
+}
+
+static struct of_device_id celleb_bus_ids[] = {
+	{ .type = "scc", },
+	{ .type = "ioif", },	/* old style */
+	{},
+};
+
+static int __init celleb_publish_devices(void)
+{
+	if (!machine_is(celleb))
+		return 0;
+
+	/* Publish OF platform devices for southbridge IOs */
+	of_platform_bus_probe(NULL, celleb_bus_ids, NULL);
+
+	return 0;
+}
+device_initcall(celleb_publish_devices);
+
+define_machine(celleb) {
+	.name			= "Cell Reference Set",
+	.probe			= celleb_probe,
+	.setup_arch		= celleb_setup_arch,
+	.show_cpuinfo		= celleb_show_cpuinfo,
+	.restart		= beat_restart,
+	.power_off		= beat_power_off,
+	.halt			= beat_halt,
+	.get_rtc_time		= beat_get_rtc_time,
+	.set_rtc_time		= beat_set_rtc_time,
+	.calibrate_decr		= generic_calibrate_decr,
+	.check_legacy_ioport	= celleb_check_legacy_ioport,
+	.progress		= celleb_progress,
+	.power_save		= beat_power_save,
+	.nvram_size		= beat_nvram_get_size,
+	.nvram_read		= beat_nvram_read,
+	.nvram_write		= beat_nvram_write,
+	.set_dabr		= beat_set_xdabr,
+	.init_IRQ		= beatic_init_IRQ,
+	.get_irq		= beatic_get_irq,
+	.pci_probe_mode 	= celleb_pci_probe_mode,
+	.pci_setup_phb		= celleb_setup_phb,
+#ifdef CONFIG_KEXEC
+	.kexec_cpu_down		= celleb_kexec_cpu_down,
+	.machine_kexec		= default_machine_kexec,
+	.machine_kexec_prepare	= default_machine_kexec_prepare,
+	.machine_crash_shutdown	= default_machine_crash_shutdown,
+#endif
+};