diff options
| -rw-r--r-- | arch/powerpc/boot/Makefile | 1 | ||||
| -rw-r--r-- | arch/powerpc/platforms/Kconfig | 1 | ||||
| -rw-r--r-- | arch/powerpc/platforms/Makefile | 1 | ||||
| -rw-r--r-- | arch/powerpc/platforms/powernv/Kconfig | 11 | ||||
| -rw-r--r-- | arch/powerpc/platforms/powernv/Makefile | 2 | ||||
| -rw-r--r-- | arch/powerpc/platforms/powernv/powernv.h | 10 | ||||
| -rw-r--r-- | arch/powerpc/platforms/powernv/setup.c | 153 | ||||
| -rw-r--r-- | arch/powerpc/platforms/powernv/smp.c | 83 |
8 files changed, 262 insertions, 0 deletions
diff --git a/arch/powerpc/boot/Makefile b/arch/powerpc/boot/Makefile index ac6705e75711..72ee8c1fba48 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 b9ba86191aed..6de27d275728 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 73e2116cfeed..2635a22bade2 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 000000000000..24700e8df19c --- /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 000000000000..1c4325056b85 --- /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 000000000000..35b716008cd3 --- /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 000000000000..569f9cc4eb04 --- /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 000000000000..36c715102c58 --- /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 */ +} |