AuxXxilium/linux_dsm_epyc7002
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linux_dsm_epyc7002/arch/mips/loongson64/common/env.c
Thomas Gleixner 2874c5fd28 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 
Based on 1 normalized pattern(s):

  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

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-or-later

has been chosen to replace the boilerplate/reference in 3029 file(s).

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Allison Randal <allison@lohutok.net>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190527070032.746973796@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-30 11:26:32 -07:00

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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Based on Ocelot Linux port, which is
* Copyright 2001 MontaVista Software Inc.
* Author: jsun@mvista.com or jsun@junsun.net
*
* Copyright 2003 ICT CAS
* Author: Michael Guo <guoyi@ict.ac.cn>
*
* Copyright (C) 2007 Lemote Inc. & Institute of Computing Technology
* Author: Fuxin Zhang, zhangfx@lemote.com
*
* Copyright (C) 2009 Lemote Inc.
* Author: Wu Zhangjin, wuzhangjin@gmail.com
*/
#include <linux/export.h>
#include <asm/bootinfo.h>
#include <loongson.h>
#include <boot_param.h>
#include <workarounds.h>
u32 cpu_clock_freq;
EXPORT_SYMBOL(cpu_clock_freq);
struct efi_memory_map_loongson *loongson_memmap;
struct loongson_system_configuration loongson_sysconf;
u64 loongson_chipcfg[MAX_PACKAGES] = {0xffffffffbfc00180};
u64 loongson_chiptemp[MAX_PACKAGES];
u64 loongson_freqctrl[MAX_PACKAGES];
unsigned long long smp_group[4];
#define parse_even_earlier(res, option, p) \
do { \
unsigned int tmp __maybe_unused; \
\
if (strncmp(option, (char *)p, strlen(option)) == 0) \
tmp = kstrtou32((char *)p + strlen(option"="), 10, &res); \
} while (0)
void __init prom_init_env(void)
{
/* pmon passes arguments in 32bit pointers */
unsigned int processor_id;
#ifndef CONFIG_LEFI_FIRMWARE_INTERFACE
int *_prom_envp;
long l;
/* firmware arguments are initialized in head.S */
_prom_envp = (int *)fw_arg2;
l = (long)*_prom_envp;
while (l != 0) {
parse_even_earlier(cpu_clock_freq, "cpuclock", l);
parse_even_earlier(memsize, "memsize", l);
parse_even_earlier(highmemsize, "highmemsize", l);
_prom_envp++;
l = (long)*_prom_envp;
}
if (memsize == 0)
memsize = 256;
loongson_sysconf.nr_uarts = 1;
pr_info("memsize=%u, highmemsize=%u\n", memsize, highmemsize);
#else
struct boot_params *boot_p;
struct loongson_params *loongson_p;
struct system_loongson *esys;
struct efi_cpuinfo_loongson *ecpu;
struct irq_source_routing_table *eirq_source;
/* firmware arguments are initialized in head.S */
boot_p = (struct boot_params *)fw_arg2;
loongson_p = &(boot_p->efi.smbios.lp);
esys = (struct system_loongson *)
((u64)loongson_p + loongson_p->system_offset);
ecpu = (struct efi_cpuinfo_loongson *)
((u64)loongson_p + loongson_p->cpu_offset);
eirq_source = (struct irq_source_routing_table *)
((u64)loongson_p + loongson_p->irq_offset);
loongson_memmap = (struct efi_memory_map_loongson *)
((u64)loongson_p + loongson_p->memory_offset);
cpu_clock_freq = ecpu->cpu_clock_freq;
loongson_sysconf.cputype = ecpu->cputype;
switch (ecpu->cputype) {
case Legacy_3A:
case Loongson_3A:
loongson_sysconf.cores_per_node = 4;
loongson_sysconf.cores_per_package = 4;
smp_group[0] = 0x900000003ff01000;
smp_group[1] = 0x900010003ff01000;
smp_group[2] = 0x900020003ff01000;
smp_group[3] = 0x900030003ff01000;
loongson_chipcfg[0] = 0x900000001fe00180;
loongson_chipcfg[1] = 0x900010001fe00180;
loongson_chipcfg[2] = 0x900020001fe00180;
loongson_chipcfg[3] = 0x900030001fe00180;
loongson_chiptemp[0] = 0x900000001fe0019c;
loongson_chiptemp[1] = 0x900010001fe0019c;
loongson_chiptemp[2] = 0x900020001fe0019c;
loongson_chiptemp[3] = 0x900030001fe0019c;
loongson_freqctrl[0] = 0x900000001fe001d0;
loongson_freqctrl[1] = 0x900010001fe001d0;
loongson_freqctrl[2] = 0x900020001fe001d0;
loongson_freqctrl[3] = 0x900030001fe001d0;
loongson_sysconf.ht_control_base = 0x90000EFDFB000000;
loongson_sysconf.workarounds = WORKAROUND_CPUFREQ;
break;
case Legacy_3B:
case Loongson_3B:
loongson_sysconf.cores_per_node = 4; /* One chip has 2 nodes */
loongson_sysconf.cores_per_package = 8;
smp_group[0] = 0x900000003ff01000;
smp_group[1] = 0x900010003ff05000;
smp_group[2] = 0x900020003ff09000;
smp_group[3] = 0x900030003ff0d000;
loongson_chipcfg[0] = 0x900000001fe00180;
loongson_chipcfg[1] = 0x900020001fe00180;
loongson_chipcfg[2] = 0x900040001fe00180;
loongson_chipcfg[3] = 0x900060001fe00180;
loongson_chiptemp[0] = 0x900000001fe0019c;
loongson_chiptemp[1] = 0x900020001fe0019c;
loongson_chiptemp[2] = 0x900040001fe0019c;
loongson_chiptemp[3] = 0x900060001fe0019c;
loongson_freqctrl[0] = 0x900000001fe001d0;
loongson_freqctrl[1] = 0x900020001fe001d0;
loongson_freqctrl[2] = 0x900040001fe001d0;
loongson_freqctrl[3] = 0x900060001fe001d0;
loongson_sysconf.ht_control_base = 0x90001EFDFB000000;
loongson_sysconf.workarounds = WORKAROUND_CPUHOTPLUG;
break;
default:
loongson_sysconf.cores_per_node = 1;
loongson_sysconf.cores_per_package = 1;
loongson_chipcfg[0] = 0x900000001fe00180;
}
loongson_sysconf.nr_cpus = ecpu->nr_cpus;
loongson_sysconf.boot_cpu_id = ecpu->cpu_startup_core_id;
loongson_sysconf.reserved_cpus_mask = ecpu->reserved_cores_mask;
if (ecpu->nr_cpus > NR_CPUS || ecpu->nr_cpus == 0)
loongson_sysconf.nr_cpus = NR_CPUS;
loongson_sysconf.nr_nodes = (loongson_sysconf.nr_cpus +
loongson_sysconf.cores_per_node - 1) /
loongson_sysconf.cores_per_node;
loongson_sysconf.pci_mem_start_addr = eirq_source->pci_mem_start_addr;
loongson_sysconf.pci_mem_end_addr = eirq_source->pci_mem_end_addr;
loongson_sysconf.pci_io_base = eirq_source->pci_io_start_addr;
loongson_sysconf.dma_mask_bits = eirq_source->dma_mask_bits;
if (loongson_sysconf.dma_mask_bits < 32 ||
loongson_sysconf.dma_mask_bits > 64)
loongson_sysconf.dma_mask_bits = 32;
loongson_sysconf.restart_addr = boot_p->reset_system.ResetWarm;
loongson_sysconf.poweroff_addr = boot_p->reset_system.Shutdown;
loongson_sysconf.suspend_addr = boot_p->reset_system.DoSuspend;
loongson_sysconf.vgabios_addr = boot_p->efi.smbios.vga_bios;
pr_debug("Shutdown Addr: %llx, Restart Addr: %llx, VBIOS Addr: %llx\n",
loongson_sysconf.poweroff_addr, loongson_sysconf.restart_addr,
loongson_sysconf.vgabios_addr);
memset(loongson_sysconf.ecname, 0, 32);
if (esys->has_ec)
memcpy(loongson_sysconf.ecname, esys->ec_name, 32);
loongson_sysconf.workarounds |= esys->workarounds;
loongson_sysconf.nr_uarts = esys->nr_uarts;
if (esys->nr_uarts < 1 || esys->nr_uarts > MAX_UARTS)
loongson_sysconf.nr_uarts = 1;
memcpy(loongson_sysconf.uarts, esys->uarts,
sizeof(struct uart_device) * loongson_sysconf.nr_uarts);
loongson_sysconf.nr_sensors = esys->nr_sensors;
if (loongson_sysconf.nr_sensors > MAX_SENSORS)
loongson_sysconf.nr_sensors = 0;
if (loongson_sysconf.nr_sensors)
memcpy(loongson_sysconf.sensors, esys->sensors,
sizeof(struct sensor_device) * loongson_sysconf.nr_sensors);
#endif
if (cpu_clock_freq == 0) {
processor_id = (&current_cpu_data)->processor_id;
switch (processor_id & PRID_REV_MASK) {
case PRID_REV_LOONGSON2E:
cpu_clock_freq = 533080000;
break;
case PRID_REV_LOONGSON2F:
cpu_clock_freq = 797000000;
break;
case PRID_REV_LOONGSON3A_R1:
case PRID_REV_LOONGSON3A_R2_0:
case PRID_REV_LOONGSON3A_R2_1:
case PRID_REV_LOONGSON3A_R3_0:
case PRID_REV_LOONGSON3A_R3_1:
cpu_clock_freq = 900000000;
break;
case PRID_REV_LOONGSON3B_R1:
case PRID_REV_LOONGSON3B_R2:
cpu_clock_freq = 1000000000;
break;
default:
cpu_clock_freq = 100000000;
break;
}
}
pr_info("CpuClock = %u\n", cpu_clock_freq);
}
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