^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) * This file is subject to the terms and conditions of the GNU General
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * Public License. See the file "COPYING" in the main directory of this
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) * archive for more details.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * Copyright (C) 2000 - 2001 by Kanoj Sarcar (kanoj@sgi.com)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) * Copyright (C) 2000 - 2001 by Silicon Graphics, Inc.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/init.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/sched.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/smp.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/mm.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/export.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/cpumask.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <asm/bootinfo.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <asm/cpu.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <asm/io.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include <asm/sgialib.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #include <asm/time.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #include <asm/sn/agent.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #include <asm/sn/types.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #include <asm/sn/klconfig.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #include <asm/sn/ioc3.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) #include <asm/mipsregs.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) #include <asm/sn/gda.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) #include <asm/sn/intr.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) #include <asm/current.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) #include <asm/processor.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) #include <asm/mmu_context.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) #include <asm/thread_info.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) #include <asm/sn/launch.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) #include <asm/sn/mapped_kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) #include "ip27-common.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) #define CPU_NONE (cpuid_t)-1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) static DECLARE_BITMAP(hub_init_mask, MAX_NUMNODES);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) nasid_t master_nasid = INVALID_NASID;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) struct cpuinfo_ip27 sn_cpu_info[NR_CPUS];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) EXPORT_SYMBOL_GPL(sn_cpu_info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) static void per_hub_init(nasid_t nasid)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) struct hub_data *hub = hub_data(nasid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) cpumask_set_cpu(smp_processor_id(), &hub->h_cpus);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) if (test_and_set_bit(nasid, hub_init_mask))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) * Set CRB timeout at 5ms, (< PI timeout of 10ms)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) REMOTE_HUB_S(nasid, IIO_ICTP, 0x800);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) REMOTE_HUB_S(nasid, IIO_ICTO, 0xff);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) hub_rtc_init(nasid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) if (nasid) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) /* copy exception handlers from first node to current node */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) memcpy((void *)NODE_OFFSET_TO_K0(nasid, 0),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) (void *)CKSEG0, 0x200);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) __flush_cache_all();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) /* switch to node local exception handlers */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) REMOTE_HUB_S(nasid, PI_CALIAS_SIZE, PI_CALIAS_SIZE_8K);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) void per_cpu_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) int cpu = smp_processor_id();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) nasid_t nasid = get_nasid();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) clear_c0_status(ST0_IM);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) per_hub_init(nasid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) pr_info("CPU %d clock is %dMHz.\n", cpu, sn_cpu_info[cpu].p_speed);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) install_ipi();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) /* Install our NMI handler if symmon hasn't installed one. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) install_cpu_nmi_handler(cputoslice(cpu));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) enable_percpu_irq(IP27_HUB_PEND0_IRQ, IRQ_TYPE_NONE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) enable_percpu_irq(IP27_HUB_PEND1_IRQ, IRQ_TYPE_NONE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) void __init plat_mem_setup(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) u64 p, e, n_mode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) nasid_t nid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) register_smp_ops(&ip27_smp_ops);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) ip27_reboot_setup();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) * hub_rtc init and cpu clock intr enabled for later calibrate_delay.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) nid = get_nasid();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) printk("IP27: Running on node %d.\n", nid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) p = LOCAL_HUB_L(PI_CPU_PRESENT_A) & 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) e = LOCAL_HUB_L(PI_CPU_ENABLE_A) & 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) printk("Node %d has %s primary CPU%s.\n", nid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) p ? "a" : "no",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) e ? ", CPU is running" : "");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) p = LOCAL_HUB_L(PI_CPU_PRESENT_B) & 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) e = LOCAL_HUB_L(PI_CPU_ENABLE_B) & 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) printk("Node %d has %s secondary CPU%s.\n", nid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) p ? "a" : "no",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) e ? ", CPU is running" : "");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) * Try to catch kernel missconfigurations and give user an
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) * indication what option to select.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) n_mode = LOCAL_HUB_L(NI_STATUS_REV_ID) & NSRI_MORENODES_MASK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) printk("Machine is in %c mode.\n", n_mode ? 'N' : 'M');
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) #ifdef CONFIG_SGI_SN_N_MODE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) if (!n_mode)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) panic("Kernel compiled for M mode.");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) if (n_mode)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) panic("Kernel compiled for N mode.");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) ioport_resource.start = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) ioport_resource.end = ~0UL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) set_io_port_base(IO_BASE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) const char *get_system_type(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) return "SGI Origin";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) void __init prom_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) prom_init_cmdline(fw_arg0, (LONG *)fw_arg1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) prom_meminit();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147)
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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