summaryrefslogtreecommitdiffstats
path: root/arch/powerpc/platforms/85xx/ppa8548.c
diff options
context:
space:
mode:
Diffstat (limited to 'arch/powerpc/platforms/85xx/ppa8548.c')
-rw-r--r--arch/powerpc/platforms/85xx/ppa8548.c92
1 files changed, 92 insertions, 0 deletions
diff --git a/arch/powerpc/platforms/85xx/ppa8548.c b/arch/powerpc/platforms/85xx/ppa8548.c
new file mode 100644
index 000000000..0faf2990b
--- /dev/null
+++ b/arch/powerpc/platforms/85xx/ppa8548.c
@@ -0,0 +1,92 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * ppa8548 setup and early boot code.
+ *
+ * Copyright 2009 Prodrive B.V..
+ *
+ * By Stef van Os (see MAINTAINERS for contact information)
+ *
+ * Based on the SBC8548 support - Copyright 2007 Wind River Systems Inc.
+ * Based on the MPC8548CDS support - Copyright 2005 Freescale Inc.
+ */
+
+#include <linux/stddef.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/reboot.h>
+#include <linux/seq_file.h>
+#include <linux/of_fdt.h>
+#include <linux/of_platform.h>
+
+#include <asm/machdep.h>
+#include <asm/udbg.h>
+#include <asm/mpic.h>
+
+#include <sysdev/fsl_soc.h>
+
+static void __init ppa8548_pic_init(void)
+{
+ struct mpic *mpic = mpic_alloc(NULL, 0, MPIC_BIG_ENDIAN,
+ 0, 256, " OpenPIC ");
+ BUG_ON(mpic == NULL);
+ mpic_init(mpic);
+}
+
+/*
+ * Setup the architecture
+ */
+static void __init ppa8548_setup_arch(void)
+{
+ if (ppc_md.progress)
+ ppc_md.progress("ppa8548_setup_arch()", 0);
+}
+
+static void ppa8548_show_cpuinfo(struct seq_file *m)
+{
+ uint32_t svid, phid1;
+
+ svid = mfspr(SPRN_SVR);
+
+ seq_printf(m, "Vendor\t\t: Prodrive B.V.\n");
+ 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));
+}
+
+static const struct of_device_id of_bus_ids[] __initconst = {
+ { .name = "soc", },
+ { .type = "soc", },
+ { .compatible = "simple-bus", },
+ { .compatible = "gianfar", },
+ { .compatible = "fsl,srio", },
+ {},
+};
+
+static int __init declare_of_platform_devices(void)
+{
+ of_platform_bus_probe(NULL, of_bus_ids, NULL);
+
+ return 0;
+}
+machine_device_initcall(ppa8548, declare_of_platform_devices);
+
+/*
+ * Called very early, device-tree isn't unflattened
+ */
+static int __init ppa8548_probe(void)
+{
+ return of_machine_is_compatible("ppa8548");
+}
+
+define_machine(ppa8548) {
+ .name = "ppa8548",
+ .probe = ppa8548_probe,
+ .setup_arch = ppa8548_setup_arch,
+ .init_IRQ = ppa8548_pic_init,
+ .show_cpuinfo = ppa8548_show_cpuinfo,
+ .get_irq = mpic_get_irq,
+ .calibrate_decr = generic_calibrate_decr,
+ .progress = udbg_progress,
+};