aboutsummaryrefslogtreecommitdiff
path: root/arch/powerpc
diff options
context:
space:
mode:
Diffstat (limited to 'arch/powerpc')
-rw-r--r--arch/powerpc/boot/Makefile1
-rw-r--r--arch/powerpc/platforms/Kconfig1
-rw-r--r--arch/powerpc/platforms/Makefile1
-rw-r--r--arch/powerpc/platforms/powernv/Kconfig11
-rw-r--r--arch/powerpc/platforms/powernv/Makefile2
-rw-r--r--arch/powerpc/platforms/powernv/powernv.h10
-rw-r--r--arch/powerpc/platforms/powernv/setup.c153
-rw-r--r--arch/powerpc/platforms/powernv/smp.c83
8 files changed, 262 insertions, 0 deletions
diff --git a/arch/powerpc/boot/Makefile b/arch/powerpc/boot/Makefile
index ac6705e7571..72ee8c1fba4 100644
--- a/arch/powerpc/boot/Makefile
+++ b/arch/powerpc/boot/Makefile
@@ -171,6 +171,7 @@ quiet_cmd_wrap = WRAP $@
$(if $3, -s $3)$(if $4, -d $4)$(if $5, -i $5) vmlinux
image-$(CONFIG_PPC_PSERIES) += zImage.pseries
+image-$(CONFIG_PPC_POWERNV) += zImage.pseries
image-$(CONFIG_PPC_MAPLE) += zImage.maple
image-$(CONFIG_PPC_IBM_CELL_BLADE) += zImage.pseries
image-$(CONFIG_PPC_PS3) += dtbImage.ps3
diff --git a/arch/powerpc/platforms/Kconfig b/arch/powerpc/platforms/Kconfig
index b9ba86191ae..6de27d27572 100644
--- a/arch/powerpc/platforms/Kconfig
+++ b/arch/powerpc/platforms/Kconfig
@@ -1,5 +1,6 @@
menu "Platform support"
+source "arch/powerpc/platforms/powernv/Kconfig"
source "arch/powerpc/platforms/pseries/Kconfig"
source "arch/powerpc/platforms/iseries/Kconfig"
source "arch/powerpc/platforms/chrp/Kconfig"
diff --git a/arch/powerpc/platforms/Makefile b/arch/powerpc/platforms/Makefile
index 73e2116cfee..2635a22bade 100644
--- a/arch/powerpc/platforms/Makefile
+++ b/arch/powerpc/platforms/Makefile
@@ -14,6 +14,7 @@ obj-$(CONFIG_PPC_82xx) += 82xx/
obj-$(CONFIG_PPC_83xx) += 83xx/
obj-$(CONFIG_FSL_SOC_BOOKE) += 85xx/
obj-$(CONFIG_PPC_86xx) += 86xx/
+obj-$(CONFIG_PPC_POWERNV) += powernv/
obj-$(CONFIG_PPC_PSERIES) += pseries/
obj-$(CONFIG_PPC_ISERIES) += iseries/
obj-$(CONFIG_PPC_MAPLE) += maple/
diff --git a/arch/powerpc/platforms/powernv/Kconfig b/arch/powerpc/platforms/powernv/Kconfig
new file mode 100644
index 00000000000..24700e8df19
--- /dev/null
+++ b/arch/powerpc/platforms/powernv/Kconfig
@@ -0,0 +1,11 @@
+config PPC_POWERNV
+ depends on PPC64 && PPC_BOOK3S
+ bool "IBM PowerNV (Non-Virtualized) platform support"
+ select PPC_RTAS
+ select PPC_NATIVE
+ select PPC_XICS
+ select PPC_ICP_NATIVE
+ select PPC_ICS_RTAS
+ select PPC_P7_NAP
+ select PPC_PCI_CHOICE if EMBEDDED
+ default y
diff --git a/arch/powerpc/platforms/powernv/Makefile b/arch/powerpc/platforms/powernv/Makefile
new file mode 100644
index 00000000000..1c4325056b8
--- /dev/null
+++ b/arch/powerpc/platforms/powernv/Makefile
@@ -0,0 +1,2 @@
+obj-y += setup.o
+obj-$(CONFIG_SMP) += smp.o
diff --git a/arch/powerpc/platforms/powernv/powernv.h b/arch/powerpc/platforms/powernv/powernv.h
new file mode 100644
index 00000000000..35b716008cd
--- /dev/null
+++ b/arch/powerpc/platforms/powernv/powernv.h
@@ -0,0 +1,10 @@
+#ifndef _POWERNV_H
+#define _POWERNV_H
+
+#ifdef CONFIG_SMP
+extern void pnv_smp_init(void);
+#else
+static inline void pnv_smp_init(void) { }
+#endif
+
+#endif /* _POWERNV_H */
diff --git a/arch/powerpc/platforms/powernv/setup.c b/arch/powerpc/platforms/powernv/setup.c
new file mode 100644
index 00000000000..569f9cc4eb0
--- /dev/null
+++ b/arch/powerpc/platforms/powernv/setup.c
@@ -0,0 +1,153 @@
+/*
+ * PowerNV setup code.
+ *
+ * Copyright 2011 IBM Corp.
+ *
+ * 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.
+ */
+
+#undef DEBUG
+
+#include <linux/cpu.h>
+#include <linux/errno.h>
+#include <linux/sched.h>
+#include <linux/kernel.h>
+#include <linux/tty.h>
+#include <linux/reboot.h>
+#include <linux/init.h>
+#include <linux/console.h>
+#include <linux/delay.h>
+#include <linux/irq.h>
+#include <linux/seq_file.h>
+#include <linux/of.h>
+#include <linux/interrupt.h>
+#include <linux/bug.h>
+
+#include <asm/machdep.h>
+#include <asm/firmware.h>
+#include <asm/xics.h>
+
+#include "powernv.h"
+
+static void __init pnv_setup_arch(void)
+{
+ /* Force console to hvc for now until we have sorted out the
+ * real console situation for the platform. This will make
+ * hvc_udbg work at least.
+ */
+ add_preferred_console("hvc", 0, NULL);
+
+ /* Initialize SMP */
+ pnv_smp_init();
+
+ /* XXX PCI */
+
+ /* XXX NVRAM */
+
+ /* Enable NAP mode */
+ powersave_nap = 1;
+
+ /* XXX PMCS */
+}
+
+static void __init pnv_init_early(void)
+{
+ /* XXX IOMMU */
+}
+
+static void __init pnv_init_IRQ(void)
+{
+ xics_init();
+
+ WARN_ON(!ppc_md.get_irq);
+}
+
+static void pnv_show_cpuinfo(struct seq_file *m)
+{
+ struct device_node *root;
+ const char *model = "";
+
+ root = of_find_node_by_path("/");
+ if (root)
+ model = of_get_property(root, "model", NULL);
+ seq_printf(m, "machine\t\t: PowerNV %s\n", model);
+ of_node_put(root);
+}
+
+static void pnv_restart(char *cmd)
+{
+ for (;;);
+}
+
+static void pnv_power_off(void)
+{
+ for (;;);
+}
+
+static void pnv_halt(void)
+{
+ for (;;);
+}
+
+static unsigned long __init pnv_get_boot_time(void)
+{
+ return 0;
+}
+
+static void pnv_get_rtc_time(struct rtc_time *rtc_tm)
+{
+}
+
+static int pnv_set_rtc_time(struct rtc_time *tm)
+{
+ return 0;
+}
+
+static void pnv_progress(char *s, unsigned short hex)
+{
+}
+
+#ifdef CONFIG_KEXEC
+static void pnv_kexec_cpu_down(int crash_shutdown, int secondary)
+{
+ xics_kexec_teardown_cpu(secondary);
+}
+#endif /* CONFIG_KEXEC */
+
+static int __init pnv_probe(void)
+{
+ unsigned long root = of_get_flat_dt_root();
+
+ if (!of_flat_dt_is_compatible(root, "ibm,powernv"))
+ return 0;
+
+ hpte_init_native();
+
+ pr_debug("PowerNV detected !\n");
+
+ return 1;
+}
+
+define_machine(powernv) {
+ .name = "PowerNV",
+ .probe = pnv_probe,
+ .setup_arch = pnv_setup_arch,
+ .init_early = pnv_init_early,
+ .init_IRQ = pnv_init_IRQ,
+ .show_cpuinfo = pnv_show_cpuinfo,
+ .restart = pnv_restart,
+ .power_off = pnv_power_off,
+ .halt = pnv_halt,
+ .get_boot_time = pnv_get_boot_time,
+ .get_rtc_time = pnv_get_rtc_time,
+ .set_rtc_time = pnv_set_rtc_time,
+ .progress = pnv_progress,
+ .power_save = power7_idle,
+ .calibrate_decr = generic_calibrate_decr,
+#ifdef CONFIG_KEXEC
+ .kexec_cpu_down = pnv_kexec_cpu_down,
+#endif
+};
diff --git a/arch/powerpc/platforms/powernv/smp.c b/arch/powerpc/platforms/powernv/smp.c
new file mode 100644
index 00000000000..36c715102c5
--- /dev/null
+++ b/arch/powerpc/platforms/powernv/smp.c
@@ -0,0 +1,83 @@
+/*
+ * SMP support for PowerNV machines.
+ *
+ * Copyright 2011 IBM Corp.
+ *
+ * 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/kernel.h>
+#include <linux/module.h>
+#include <linux/sched.h>
+#include <linux/smp.h>
+#include <linux/interrupt.h>
+#include <linux/delay.h>
+#include <linux/init.h>
+#include <linux/spinlock.h>
+#include <linux/cpu.h>
+
+#include <asm/irq.h>
+#include <asm/smp.h>
+#include <asm/paca.h>
+#include <asm/machdep.h>
+#include <asm/cputable.h>
+#include <asm/firmware.h>
+#include <asm/system.h>
+#include <asm/rtas.h>
+#include <asm/vdso_datapage.h>
+#include <asm/cputhreads.h>
+#include <asm/xics.h>
+
+#include "powernv.h"
+
+static void __devinit pnv_smp_setup_cpu(int cpu)
+{
+ if (cpu != boot_cpuid)
+ xics_setup_cpu();
+}
+
+static int pnv_smp_cpu_bootable(unsigned int nr)
+{
+ /* Special case - we inhibit secondary thread startup
+ * during boot if the user requests it.
+ */
+ if (system_state < SYSTEM_RUNNING && cpu_has_feature(CPU_FTR_SMT)) {
+ if (!smt_enabled_at_boot && cpu_thread_in_core(nr) != 0)
+ return 0;
+ if (smt_enabled_at_boot
+ && cpu_thread_in_core(nr) >= smt_enabled_at_boot)
+ return 0;
+ }
+
+ return 1;
+}
+
+static struct smp_ops_t pnv_smp_ops = {
+ .message_pass = smp_muxed_ipi_message_pass,
+ .cause_ipi = NULL, /* Filled at runtime by xics_smp_probe() */
+ .probe = xics_smp_probe,
+ .kick_cpu = smp_generic_kick_cpu,
+ .setup_cpu = pnv_smp_setup_cpu,
+ .cpu_bootable = pnv_smp_cpu_bootable,
+};
+
+/* This is called very early during platform setup_arch */
+void __init pnv_smp_init(void)
+{
+ smp_ops = &pnv_smp_ops;
+
+ /* XXX We don't yet have a proper entry point from HAL, for
+ * now we rely on kexec-style entry from BML
+ */
+
+#ifdef CONFIG_PPC_RTAS
+ /* Non-lpar has additional take/give timebase */
+ if (rtas_token("freeze-time-base") != RTAS_UNKNOWN_SERVICE) {
+ smp_ops->give_timebase = rtas_give_timebase;
+ smp_ops->take_timebase = rtas_take_timebase;
+ }
+#endif /* CONFIG_PPC_RTAS */
+}