155190f88SBenjamin Herrenschmidt /* 255190f88SBenjamin Herrenschmidt * PowerNV setup code. 355190f88SBenjamin Herrenschmidt * 455190f88SBenjamin Herrenschmidt * Copyright 2011 IBM Corp. 555190f88SBenjamin Herrenschmidt * 655190f88SBenjamin Herrenschmidt * This program is free software; you can redistribute it and/or 755190f88SBenjamin Herrenschmidt * modify it under the terms of the GNU General Public License 855190f88SBenjamin Herrenschmidt * as published by the Free Software Foundation; either version 955190f88SBenjamin Herrenschmidt * 2 of the License, or (at your option) any later version. 1055190f88SBenjamin Herrenschmidt */ 1155190f88SBenjamin Herrenschmidt 1255190f88SBenjamin Herrenschmidt #undef DEBUG 1355190f88SBenjamin Herrenschmidt 1455190f88SBenjamin Herrenschmidt #include <linux/cpu.h> 1555190f88SBenjamin Herrenschmidt #include <linux/errno.h> 1655190f88SBenjamin Herrenschmidt #include <linux/sched.h> 1755190f88SBenjamin Herrenschmidt #include <linux/kernel.h> 1855190f88SBenjamin Herrenschmidt #include <linux/tty.h> 1955190f88SBenjamin Herrenschmidt #include <linux/reboot.h> 2055190f88SBenjamin Herrenschmidt #include <linux/init.h> 2155190f88SBenjamin Herrenschmidt #include <linux/console.h> 2255190f88SBenjamin Herrenschmidt #include <linux/delay.h> 2355190f88SBenjamin Herrenschmidt #include <linux/irq.h> 2455190f88SBenjamin Herrenschmidt #include <linux/seq_file.h> 2555190f88SBenjamin Herrenschmidt #include <linux/of.h> 2655190f88SBenjamin Herrenschmidt #include <linux/interrupt.h> 2755190f88SBenjamin Herrenschmidt #include <linux/bug.h> 2855190f88SBenjamin Herrenschmidt 2955190f88SBenjamin Herrenschmidt #include <asm/machdep.h> 3055190f88SBenjamin Herrenschmidt #include <asm/firmware.h> 3155190f88SBenjamin Herrenschmidt #include <asm/xics.h> 32daea1175SBenjamin Herrenschmidt #include <asm/opal.h> 3355190f88SBenjamin Herrenschmidt 3455190f88SBenjamin Herrenschmidt #include "powernv.h" 3555190f88SBenjamin Herrenschmidt 3655190f88SBenjamin Herrenschmidt static void __init pnv_setup_arch(void) 3755190f88SBenjamin Herrenschmidt { 3855190f88SBenjamin Herrenschmidt /* Initialize SMP */ 3955190f88SBenjamin Herrenschmidt pnv_smp_init(); 4055190f88SBenjamin Herrenschmidt 4155190f88SBenjamin Herrenschmidt /* XXX PCI */ 4255190f88SBenjamin Herrenschmidt 4355190f88SBenjamin Herrenschmidt /* XXX NVRAM */ 4455190f88SBenjamin Herrenschmidt 4555190f88SBenjamin Herrenschmidt /* Enable NAP mode */ 4655190f88SBenjamin Herrenschmidt powersave_nap = 1; 4755190f88SBenjamin Herrenschmidt 4855190f88SBenjamin Herrenschmidt /* XXX PMCS */ 4955190f88SBenjamin Herrenschmidt } 5055190f88SBenjamin Herrenschmidt 5155190f88SBenjamin Herrenschmidt static void __init pnv_init_early(void) 5255190f88SBenjamin Herrenschmidt { 53daea1175SBenjamin Herrenschmidt #ifdef CONFIG_HVC_OPAL 54daea1175SBenjamin Herrenschmidt if (firmware_has_feature(FW_FEATURE_OPAL)) 55daea1175SBenjamin Herrenschmidt hvc_opal_init_early(); 56daea1175SBenjamin Herrenschmidt else 57daea1175SBenjamin Herrenschmidt #endif 58daea1175SBenjamin Herrenschmidt add_preferred_console("hvc", 0, NULL); 5955190f88SBenjamin Herrenschmidt } 6055190f88SBenjamin Herrenschmidt 6155190f88SBenjamin Herrenschmidt static void __init pnv_init_IRQ(void) 6255190f88SBenjamin Herrenschmidt { 6355190f88SBenjamin Herrenschmidt xics_init(); 6455190f88SBenjamin Herrenschmidt 6555190f88SBenjamin Herrenschmidt WARN_ON(!ppc_md.get_irq); 6655190f88SBenjamin Herrenschmidt } 6755190f88SBenjamin Herrenschmidt 6855190f88SBenjamin Herrenschmidt static void pnv_show_cpuinfo(struct seq_file *m) 6955190f88SBenjamin Herrenschmidt { 7055190f88SBenjamin Herrenschmidt struct device_node *root; 7155190f88SBenjamin Herrenschmidt const char *model = ""; 7255190f88SBenjamin Herrenschmidt 7355190f88SBenjamin Herrenschmidt root = of_find_node_by_path("/"); 7455190f88SBenjamin Herrenschmidt if (root) 7555190f88SBenjamin Herrenschmidt model = of_get_property(root, "model", NULL); 7655190f88SBenjamin Herrenschmidt seq_printf(m, "machine\t\t: PowerNV %s\n", model); 7714a43e69SBenjamin Herrenschmidt if (firmware_has_feature(FW_FEATURE_OPALv2)) 7814a43e69SBenjamin Herrenschmidt seq_printf(m, "firmware\t: OPAL v2\n"); 7914a43e69SBenjamin Herrenschmidt else if (firmware_has_feature(FW_FEATURE_OPAL)) 8014a43e69SBenjamin Herrenschmidt seq_printf(m, "firmware\t: OPAL v1\n"); 8114a43e69SBenjamin Herrenschmidt else 8214a43e69SBenjamin Herrenschmidt seq_printf(m, "firmware\t: BML\n"); 8355190f88SBenjamin Herrenschmidt of_node_put(root); 8455190f88SBenjamin Herrenschmidt } 8555190f88SBenjamin Herrenschmidt 8655190f88SBenjamin Herrenschmidt static void pnv_restart(char *cmd) 8755190f88SBenjamin Herrenschmidt { 8855190f88SBenjamin Herrenschmidt for (;;); 8955190f88SBenjamin Herrenschmidt } 9055190f88SBenjamin Herrenschmidt 9155190f88SBenjamin Herrenschmidt static void pnv_power_off(void) 9255190f88SBenjamin Herrenschmidt { 9355190f88SBenjamin Herrenschmidt for (;;); 9455190f88SBenjamin Herrenschmidt } 9555190f88SBenjamin Herrenschmidt 9655190f88SBenjamin Herrenschmidt static void pnv_halt(void) 9755190f88SBenjamin Herrenschmidt { 9855190f88SBenjamin Herrenschmidt for (;;); 9955190f88SBenjamin Herrenschmidt } 10055190f88SBenjamin Herrenschmidt 10155190f88SBenjamin Herrenschmidt static unsigned long __init pnv_get_boot_time(void) 10255190f88SBenjamin Herrenschmidt { 10355190f88SBenjamin Herrenschmidt return 0; 10455190f88SBenjamin Herrenschmidt } 10555190f88SBenjamin Herrenschmidt 10655190f88SBenjamin Herrenschmidt static void pnv_get_rtc_time(struct rtc_time *rtc_tm) 10755190f88SBenjamin Herrenschmidt { 10855190f88SBenjamin Herrenschmidt } 10955190f88SBenjamin Herrenschmidt 11055190f88SBenjamin Herrenschmidt static int pnv_set_rtc_time(struct rtc_time *tm) 11155190f88SBenjamin Herrenschmidt { 11255190f88SBenjamin Herrenschmidt return 0; 11355190f88SBenjamin Herrenschmidt } 11455190f88SBenjamin Herrenschmidt 11555190f88SBenjamin Herrenschmidt static void pnv_progress(char *s, unsigned short hex) 11655190f88SBenjamin Herrenschmidt { 11755190f88SBenjamin Herrenschmidt } 11855190f88SBenjamin Herrenschmidt 11955190f88SBenjamin Herrenschmidt #ifdef CONFIG_KEXEC 12055190f88SBenjamin Herrenschmidt static void pnv_kexec_cpu_down(int crash_shutdown, int secondary) 12155190f88SBenjamin Herrenschmidt { 12255190f88SBenjamin Herrenschmidt xics_kexec_teardown_cpu(secondary); 12355190f88SBenjamin Herrenschmidt } 12455190f88SBenjamin Herrenschmidt #endif /* CONFIG_KEXEC */ 12555190f88SBenjamin Herrenschmidt 12655190f88SBenjamin Herrenschmidt static int __init pnv_probe(void) 12755190f88SBenjamin Herrenschmidt { 12855190f88SBenjamin Herrenschmidt unsigned long root = of_get_flat_dt_root(); 12955190f88SBenjamin Herrenschmidt 13055190f88SBenjamin Herrenschmidt if (!of_flat_dt_is_compatible(root, "ibm,powernv")) 13155190f88SBenjamin Herrenschmidt return 0; 13255190f88SBenjamin Herrenschmidt 13355190f88SBenjamin Herrenschmidt hpte_init_native(); 13455190f88SBenjamin Herrenschmidt 13555190f88SBenjamin Herrenschmidt pr_debug("PowerNV detected !\n"); 13655190f88SBenjamin Herrenschmidt 13755190f88SBenjamin Herrenschmidt return 1; 13855190f88SBenjamin Herrenschmidt } 13955190f88SBenjamin Herrenschmidt 14055190f88SBenjamin Herrenschmidt define_machine(powernv) { 14155190f88SBenjamin Herrenschmidt .name = "PowerNV", 14255190f88SBenjamin Herrenschmidt .probe = pnv_probe, 14355190f88SBenjamin Herrenschmidt .setup_arch = pnv_setup_arch, 14455190f88SBenjamin Herrenschmidt .init_early = pnv_init_early, 14555190f88SBenjamin Herrenschmidt .init_IRQ = pnv_init_IRQ, 14655190f88SBenjamin Herrenschmidt .show_cpuinfo = pnv_show_cpuinfo, 14755190f88SBenjamin Herrenschmidt .restart = pnv_restart, 14855190f88SBenjamin Herrenschmidt .power_off = pnv_power_off, 14955190f88SBenjamin Herrenschmidt .halt = pnv_halt, 15055190f88SBenjamin Herrenschmidt .get_boot_time = pnv_get_boot_time, 15155190f88SBenjamin Herrenschmidt .get_rtc_time = pnv_get_rtc_time, 15255190f88SBenjamin Herrenschmidt .set_rtc_time = pnv_set_rtc_time, 15355190f88SBenjamin Herrenschmidt .progress = pnv_progress, 15455190f88SBenjamin Herrenschmidt .power_save = power7_idle, 15555190f88SBenjamin Herrenschmidt .calibrate_decr = generic_calibrate_decr, 15655190f88SBenjamin Herrenschmidt #ifdef CONFIG_KEXEC 15755190f88SBenjamin Herrenschmidt .kexec_cpu_down = pnv_kexec_cpu_down, 15855190f88SBenjamin Herrenschmidt #endif 15955190f88SBenjamin Herrenschmidt }; 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