diff options
Diffstat (limited to 'arch/mips/loongson/common/env.c')
| -rw-r--r-- | arch/mips/loongson/common/env.c | 91 |
1 files changed, 75 insertions, 16 deletions
diff --git a/arch/mips/loongson/common/env.c b/arch/mips/loongson/common/env.c index 196d947d929..0c543eae49b 100644 --- a/arch/mips/loongson/common/env.c +++ b/arch/mips/loongson/common/env.c @@ -9,36 +9,39 @@ * Copyright (C) 2007 Lemote Inc. & Insititute of Computing Technology * Author: Fuxin Zhang, zhangfx@lemote.com * - * Copyright (C) 2009 Lemote Inc. & Insititute of Computing Technology - * Author: Wu Zhangjin, wuzj@lemote.com + * Copyright (C) 2009 Lemote Inc. + * Author: Wu Zhangjin, wuzhangjin@gmail.com * - * 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 + * 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/module.h> - #include <asm/bootinfo.h> - #include <loongson.h> +#include <boot_param.h> -unsigned long bus_clock, cpu_clock_freq; +u32 cpu_clock_freq; EXPORT_SYMBOL(cpu_clock_freq); -unsigned long memsize, highmemsize; - -/* pmon passes arguments in 32bit pointers */ -int *_prom_envp; +struct efi_memory_map_loongson *loongson_memmap; +struct loongson_system_configuration loongson_sysconf; #define parse_even_earlier(res, option, p) \ do { \ + unsigned int tmp __maybe_unused; \ + \ if (strncmp(option, (char *)p, strlen(option)) == 0) \ - strict_strtol((char *)p + strlen(option"="), \ - 10, &res); \ + 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 */ @@ -46,7 +49,6 @@ void __init prom_init_env(void) l = (long)*_prom_envp; while (l != 0) { - parse_even_earlier(bus_clock, "busclock", l); parse_even_earlier(cpu_clock_freq, "cpuclock", l); parse_even_earlier(memsize, "memsize", l); parse_even_earlier(highmemsize, "highmemsize", l); @@ -55,7 +57,64 @@ void __init prom_init_env(void) } if (memsize == 0) memsize = 256; + pr_info("memsize=%u, highmemsize=%u\n", memsize, highmemsize); +#else + struct boot_params *boot_p; + struct loongson_params *loongson_p; + 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); - pr_info("busclock=%ld, cpuclock=%ld, memsize=%ld, highmemsize=%ld\n", - bus_clock, cpu_clock_freq, memsize, highmemsize); + 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; + loongson_sysconf.nr_cpus = ecpu->nr_cpus; + if (ecpu->nr_cpus > NR_CPUS || ecpu->nr_cpus == 0) + loongson_sysconf.nr_cpus = NR_CPUS; + + 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.ht_control_base = 0x90000EFDFB000000; + 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); +#endif + if (cpu_clock_freq == 0) { + processor_id = (¤t_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: + cpu_clock_freq = 900000000; + break; + default: + cpu_clock_freq = 100000000; + break; + } + } + pr_info("CpuClock = %u\n", cpu_clock_freq); } |