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-rw-r--r--arch/powerpc/platforms/82xx/mgcoge.c129
1 files changed, 129 insertions, 0 deletions
diff --git a/arch/powerpc/platforms/82xx/mgcoge.c b/arch/powerpc/platforms/82xx/mgcoge.c
new file mode 100644
index 00000000000..c2af169c1d1
--- /dev/null
+++ b/arch/powerpc/platforms/82xx/mgcoge.c
@@ -0,0 +1,129 @@
+/*
+ * Keymile mgcoge support
+ * Copyright 2008 DENX Software Engineering GmbH
+ * Author: Heiko Schocher <hs@denx.de>
+ *
+ * based on code from:
+ * Copyright 2007 Freescale Semiconductor, Inc.
+ * Author: Scott Wood <scottwood@freescale.com>
+ *
+ * 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/init.h>
+#include <linux/interrupt.h>
+#include <linux/fsl_devices.h>
+#include <linux/of_platform.h>
+
+#include <asm/io.h>
+#include <asm/cpm2.h>
+#include <asm/udbg.h>
+#include <asm/machdep.h>
+#include <asm/time.h>
+#include <asm/mpc8260.h>
+#include <asm/prom.h>
+
+#include <sysdev/fsl_soc.h>
+#include <sysdev/cpm2_pic.h>
+
+#include "pq2.h"
+
+static void __init mgcoge_pic_init(void)
+{
+ struct device_node *np = of_find_compatible_node(NULL, NULL, "fsl,pq2-pic");
+ if (!np) {
+ printk(KERN_ERR "PIC init: can not find cpm-pic node\n");
+ return;
+ }
+
+ cpm2_pic_init(np);
+ of_node_put(np);
+}
+
+struct cpm_pin {
+ int port, pin, flags;
+};
+
+static __initdata struct cpm_pin mgcoge_pins[] = {
+
+ /* SMC2 */
+ {1, 8, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
+ {1, 9, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
+
+ /* SCC4 */
+ {3, 25, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
+ {3, 24, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
+ {3, 9, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
+ {3, 8, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
+ {4, 22, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
+ {4, 21, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
+};
+
+static void __init init_ioports(void)
+{
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(mgcoge_pins); i++) {
+ const struct cpm_pin *pin = &mgcoge_pins[i];
+ cpm2_set_pin(pin->port - 1, pin->pin, pin->flags);
+ }
+
+ cpm2_smc_clk_setup(CPM_CLK_SMC2, CPM_BRG8);
+ cpm2_clk_setup(CPM_CLK_SCC4, CPM_CLK7, CPM_CLK_RX);
+ cpm2_clk_setup(CPM_CLK_SCC4, CPM_CLK8, CPM_CLK_TX);
+}
+
+static void __init mgcoge_setup_arch(void)
+{
+ if (ppc_md.progress)
+ ppc_md.progress("mgcoge_setup_arch()", 0);
+
+ cpm2_reset();
+
+ /* When this is set, snooping CPM DMA from RAM causes
+ * machine checks. See erratum SIU18.
+ */
+ clrbits32(&cpm2_immr->im_siu_conf.siu_82xx.sc_bcr, MPC82XX_BCR_PLDP);
+
+ init_ioports();
+
+ if (ppc_md.progress)
+ ppc_md.progress("mgcoge_setup_arch(), finish", 0);
+}
+
+static __initdata struct of_device_id of_bus_ids[] = {
+ { .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(mgcoge, declare_of_platform_devices);
+
+/*
+ * Called very early, device-tree isn't unflattened
+ */
+static int __init mgcoge_probe(void)
+{
+ unsigned long root = of_get_flat_dt_root();
+ return of_flat_dt_is_compatible(root, "keymile,mgcoge");
+}
+
+define_machine(mgcoge)
+{
+ .name = "Keymile MGCOGE",
+ .probe = mgcoge_probe,
+ .setup_arch = mgcoge_setup_arch,
+ .init_IRQ = mgcoge_pic_init,
+ .get_irq = cpm2_get_irq,
+ .calibrate_decr = generic_calibrate_decr,
+ .restart = pq2_restart,
+ .progress = udbg_progress,
+};