1 // SPDX-License-Identifier: GPL-2.0-or-later
3  *  64-bit pSeries and RS/6000 setup code.
6  *  Adapted from 'alpha' version by Gary Thomas
7  *  Modified by Cort Dougan (cort@cs.nmt.edu)
8  *  Modified by PPC64 Team, IBM Corp
49 #include <asm/rtas.h>
50 #include <asm/pci-bridge.h>
60 #include <asm/ppc-pci.h>
69 #include <asm/isa-bridge.h>
71 #include <asm/asm-const.h>
95 early_param("no-steal-acc", parse_no_stealacc);
98 int CMO_PrPSP = -1;
99 int CMO_SecPSP = -1;
123 /* Initialize firmware assisted non-maskable interrupts if
138 	ibm_nmi_register_token = rtas_token("ibm,nmi-register");  in fwnmi_init()
142 	ibm_nmi_interlock_token = rtas_token("ibm,nmi-interlock");  in fwnmi_init()
148 	system_reset_addr  = __pa(system_reset_fwnmi) - PHYSICAL_START;  in fwnmi_init()
149 	machine_check_addr = __pa(machine_check_fwnmi) - PHYSICAL_START;  in fwnmi_init()
156 	 * Allocate a chunk for per cpu buffer to hold rtas errorlog.  in fwnmi_init()
157 	 * It will be used in real mode mce handler, hence it needs to be  in fwnmi_init()
168 		paca_ptrs[i]->mce_data_buf = mce_data_buf +  in fwnmi_init()
184 			paca_ptrs[i]->mce_faulty_slbs = slb_ptr + (mmu_slb_size * i);  in fwnmi_init()
196 		platform_device_register_simple("pseries-wdt", 0, NULL, 0);  in pseries_wdt_init()
209 	chip->irq_eoi(&desc->irq_data);  in pseries_8259_cascade()
220 	for_each_node_by_type(np, "interrupt-controller") {  in pseries_setup_i8259_cascade()
246 		addrp = of_get_property(np, "8259-interrupt-acknowledge", NULL);  in pseries_setup_i8259_cascade()
250 		intack = addrp[naddr-1];  in pseries_setup_i8259_cascade()
252 			intack |= ((unsigned long)addrp[naddr-2]) << 32;  in pseries_setup_i8259_cascade()
282 	struct device_node *parent, *np = rd->dn;  in pci_dn_reconfig_notifier()
291 			pci_add_device_node_info(pdn->phb, np);  in pci_dn_reconfig_notifier()
298 			list_del(&pdn->list);  in pci_dn_reconfig_notifier()
316  * and register the buffers with the hypervisor.  This is used for
317  * computing time stolen by the hypervisor.
364 	 * low power mode by ceding processor to hypervisor  in pseries_lpar_idle()
396  * just give up rather than wasting any more time on this - if that turns out
514 		phb->controller_ops = pseries_pci_controller_ops;  in pSeries_discover_phbs()
534 	 * The features below are disabled by default, so we instead look to see  in init_cpu_char_feature_flags()
537 	if (result->character & H_CPU_CHAR_SPEC_BAR_ORI31)  in init_cpu_char_feature_flags()
540 	if (result->character & H_CPU_CHAR_BCCTRL_SERIALISED)  in init_cpu_char_feature_flags()
543 	if (result->character & H_CPU_CHAR_L1D_FLUSH_ORI30)  in init_cpu_char_feature_flags()
546 	if (result->character & H_CPU_CHAR_L1D_FLUSH_TRIG2)  in init_cpu_char_feature_flags()
549 	if (result->character & H_CPU_CHAR_L1D_THREAD_PRIV)  in init_cpu_char_feature_flags()
552 	if (result->character & H_CPU_CHAR_COUNT_CACHE_DISABLED)  in init_cpu_char_feature_flags()
555 	if (result->character & H_CPU_CHAR_BCCTR_FLUSH_ASSIST)  in init_cpu_char_feature_flags()
558 	if (result->character & H_CPU_CHAR_BCCTR_LINK_FLUSH_ASSIST)  in init_cpu_char_feature_flags()
561 	if (result->behaviour & H_CPU_BEHAV_FLUSH_COUNT_CACHE)  in init_cpu_char_feature_flags()
564 	if (result->behaviour & H_CPU_BEHAV_FLUSH_LINK_STACK)  in init_cpu_char_feature_flags()
568 	 * The features below are enabled by default, so we instead look to see  in init_cpu_char_feature_flags()
573 	if (!(result->behaviour & H_CPU_BEHAV_FAVOUR_SECURITY)) {  in init_cpu_char_feature_flags()
576 	} else if (result->behaviour & H_CPU_BEHAV_FAVOUR_SECURITY_H)  in init_cpu_char_feature_flags()
581 	if (!(result->behaviour & H_CPU_BEHAV_L1D_FLUSH_PR))  in init_cpu_char_feature_flags()
584 	if (result->behaviour & H_CPU_BEHAV_NO_L1D_FLUSH_ENTRY)  in init_cpu_char_feature_flags()
587 	if (result->behaviour & H_CPU_BEHAV_NO_L1D_FLUSH_UACCESS)  in init_cpu_char_feature_flags()
590 	if (result->behaviour & H_CPU_BEHAV_NO_STF_BARRIER)  in init_cpu_char_feature_flags()
593 	if (!(result->behaviour & H_CPU_BEHAV_BNDS_CHK_SPEC_BAR))  in init_cpu_char_feature_flags()
605 	 * Set features to the defaults assumed by init_cpu_char_feature_flags()  in pseries_setup_security_mitigations()
669 	indexes = of_get_property(dn, "ibm,open-sriov-vf-bar-info", NULL);  in pseries_get_iov_fw_value()
708 		res = &dev->resource[r + PCI_IOV_RESOURCES];  in of_pci_set_vf_bar_size()
711 		res->flags = pci_parse_of_flags(of_read_number  in of_pci_set_vf_bar_size()
713 		res->flags |= (IORESOURCE_MEM_64 | IORESOURCE_PCI_FIXED);  in of_pci_set_vf_bar_size()
714 		res->name = pci_name(dev);  in of_pci_set_vf_bar_size()
715 		res->start = base;  in of_pci_set_vf_bar_size()
716 		res->end = base + size - 1;  in of_pci_set_vf_bar_size()
734 		res = &dev->resource[r + PCI_IOV_RESOURCES];  in of_pci_parse_iov_addrs()
737 		res->name = pci_name(dev);  in of_pci_parse_iov_addrs()
738 		res->start = base;  in of_pci_parse_iov_addrs()
739 		res->end = base + size - 1;  in of_pci_parse_iov_addrs()
741 		dev_dbg(&dev->dev,  in of_pci_parse_iov_addrs()
746 			dev_info(&dev->dev,  in of_pci_parse_iov_addrs()
749 				 conflict->name, conflict);  in of_pci_parse_iov_addrs()
750 			res->flags |= IORESOURCE_UNSET;  in of_pci_parse_iov_addrs()
759 	pci_warn(pdev, "No hypervisor support for SR-IOV on this device, IOV BARs disabled.\n");  in pseries_disable_sriov_resources()
761 		pdev->resource[i + PCI_IOV_RESOURCES].flags = 0;  in pseries_disable_sriov_resources()
770 	indexes = of_get_property(dn, "ibm,open-sriov-vf-bar-info", NULL);  in pseries_pci_fixup_resources()
782 	if (!pdev->is_physfn)  in pseries_pci_fixup_iov_resources()
785 	indexes = of_get_property(dn, "ibm,open-sriov-vf-bar-info", NULL);  in pseries_pci_fixup_iov_resources()
799 	reg = of_get_property(dn, "ibm,is-open-sriov-pf", NULL);  in pseries_pci_iov_resource_alignment()
803 	if (!pdev->is_physfn)  in pseries_pci_iov_resource_alignment()
806 					resno - PCI_IOV_RESOURCES,  in pseries_pci_iov_resource_alignment()
824 	/* openpic global configuration register (64-bit format). */  in pSeries_setup_arch()
825 	/* openpic Interrupt Source Unit pointer (64-bit format). */  in pSeries_setup_arch()
826 	/* python0 facility area (mmio) (64-bit format) REAL address. */  in pSeries_setup_arch()
837 	/* By default, only probe PCI (can be overridden by rtas_pci) */  in pSeries_setup_arch()
892 	ppc_md.progress(init_utsname()->version, 0);  in pSeries_init_panel()
939  * fw_cmo_feature_init - FW_FEATURE_CMO is not stored in ibm,hypertas-functions,
948 	pr_debug(" -> fw_cmo_feature_init()\n");  in pSeries_cmo_feature_init()
951 	call_status = rtas_call(rtas_token("ibm,get-system-parameter"), 3, 1,  in pSeries_cmo_feature_init()
960 		pr_debug(" <- fw_cmo_feature_init()\n");  in pSeries_cmo_feature_init()
964 	end = rtas_data_buf + CMO_MAXLENGTH - 2;  in pSeries_cmo_feature_init()
969 		/* Separate the key and value by replacing '=' with '\0' and  in pSeries_cmo_feature_init()
1002 	if (CMO_PrPSP != -1 || CMO_SecPSP != -1) {  in pSeries_cmo_feature_init()
1012 	pr_debug(" <- fw_cmo_feature_init()\n");  in pSeries_cmo_feature_init()
1037 	if (of_property_read_bool(of_root, "ibm,powervm-partition") ||  in pseries_add_hw_description()
1038 	    of_property_read_bool(of_root, "ibm,fw-net-version"))  in pseries_add_hw_description()
1047 	pr_debug(" -> pseries_init()\n");  in pseries_init()
1066 	pr_debug(" <- pseries_init()\n");  in pseries_init()
1070  * pseries_power_off - tell firmware about how to power off the system.
1072  * This function calls either the power-off rtas token in normal cases
1073  * or the ibm,power-off-ups token (if present & requested) in case of
1074  * a power failure. If power-off token is used, power on will only be
1075  * possible with power button press. If ibm,power-off-ups token is used
1081 	int rtas_poweroff_ups_token = rtas_token("ibm,power-off-ups");  in pseries_power_off()
1088 		rc = rtas_call(rtas_token("power-off"), 2, 1, NULL, -1, -1);  in pseries_power_off()
1089 		printk(KERN_INFO "RTAS power-off returned %d\n", rc);  in pseries_power_off()
1092 		printk(KERN_INFO "RTAS ibm,power-off-ups returned %d\n", rc);  in pseries_power_off()
1105 	if (of_machine_is_compatible("IBM,CPBW-1.0") ||  in pSeries_probe()