mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-24 13:13:57 +08:00
powerpc: Pull common bits of setup_{32,64}.c into setup-common.c
This creates a new arch/powerpc/kernel/setup-common.c with various bits that setup_32.c and setup_64.c had in common - functions like machine_shutdown/restart/power_off, show_cpuinfo, set_preferred_console etc. Signed-off-by: Paul Mackerras <paulus@samba.org>
This commit is contained in:
Paul Mackerras
parent
033ef338b6
commit
03501dab03
@ -32,7 +32,7 @@ extra-$(CONFIG_PPC_FPU) += fpu.o
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extra-y += vmlinux.lds
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obj-y += process.o init_task.o time.o \
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prom.o systbl.o traps.o
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prom.o systbl.o traps.o setup-common.o
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obj-$(CONFIG_PPC32) += entry_32.o idle_6xx.o setup_32.o misc_32.o
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obj-$(CONFIG_PPC64) += setup_64.o misc_64.o
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obj-$(CONFIG_PPC_OF) += prom_init.o
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@ -14,7 +14,6 @@
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#include <linux/pci.h>
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#include <linux/delay.h>
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#include <linux/ide.h>
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#include <linux/pm.h>
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#include <linux/bitops.h>
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#include <asm/page.h>
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@ -231,7 +230,6 @@ EXPORT_SYMBOL(screen_info);
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#endif
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#ifdef CONFIG_PPC32
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EXPORT_SYMBOL(pm_power_off);
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EXPORT_SYMBOL(__delay);
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EXPORT_SYMBOL(timer_interrupt);
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EXPORT_SYMBOL(irq_desc);
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412
arch/powerpc/kernel/setup-common.c
Normal file
412
arch/powerpc/kernel/setup-common.c
Normal file
@ -0,0 +1,412 @@
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/*
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* Common boot and setup code for both 32-bit and 64-bit.
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* Extracted from arch/powerpc/kernel/setup_64.c.
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*
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* Copyright (C) 2001 PPC64 Team, IBM Corp
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*/
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#include <linux/config.h>
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#include <linux/module.h>
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#include <linux/string.h>
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#include <linux/sched.h>
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#include <linux/init.h>
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#include <linux/kernel.h>
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#include <linux/reboot.h>
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#include <linux/delay.h>
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#include <linux/initrd.h>
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#include <linux/ide.h>
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#include <linux/seq_file.h>
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#include <linux/ioport.h>
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#include <linux/console.h>
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#include <linux/utsname.h>
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#include <linux/tty.h>
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#include <linux/root_dev.h>
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#include <linux/notifier.h>
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#include <linux/cpu.h>
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#include <linux/unistd.h>
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#include <linux/serial.h>
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#include <linux/serial_8250.h>
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#include <asm/io.h>
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#include <asm/prom.h>
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#include <asm/processor.h>
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#include <asm/pgtable.h>
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#include <asm/bootinfo.h>
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#include <asm/smp.h>
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#include <asm/elf.h>
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#include <asm/machdep.h>
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#include <asm/time.h>
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#include <asm/cputable.h>
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#include <asm/sections.h>
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#include <asm/btext.h>
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#include <asm/nvram.h>
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#include <asm/setup.h>
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#include <asm/system.h>
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#include <asm/rtas.h>
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#include <asm/iommu.h>
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#include <asm/serial.h>
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#include <asm/cache.h>
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#include <asm/page.h>
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#include <asm/mmu.h>
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#include <asm/lmb.h>
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#undef DEBUG
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#ifdef DEBUG
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#define DBG(fmt...) udbg_printf(fmt)
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#else
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#define DBG(fmt...)
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#endif
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/*
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* This still seems to be needed... -- paulus
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*/
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struct screen_info screen_info = {
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.orig_x = 0,
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.orig_y = 25,
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.orig_video_cols = 80,
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.orig_video_lines = 25,
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.orig_video_isVGA = 1,
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.orig_video_points = 16
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};
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#ifdef __DO_IRQ_CANON
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/* XXX should go elsewhere eventually */
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int ppc_do_canonicalize_irqs;
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EXPORT_SYMBOL(ppc_do_canonicalize_irqs);
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#endif
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/* also used by kexec */
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void machine_shutdown(void)
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{
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if (ppc_md.nvram_sync)
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ppc_md.nvram_sync();
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}
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void machine_restart(char *cmd)
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{
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machine_shutdown();
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ppc_md.restart(cmd);
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#ifdef CONFIG_SMP
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smp_send_stop();
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#endif
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printk(KERN_EMERG "System Halted, OK to turn off power\n");
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local_irq_disable();
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while (1) ;
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}
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void machine_power_off(void)
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{
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machine_shutdown();
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ppc_md.power_off();
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#ifdef CONFIG_SMP
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smp_send_stop();
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#endif
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printk(KERN_EMERG "System Halted, OK to turn off power\n");
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local_irq_disable();
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while (1) ;
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}
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/* Used by the G5 thermal driver */
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EXPORT_SYMBOL_GPL(machine_power_off);
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void (*pm_power_off)(void) = machine_power_off;
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EXPORT_SYMBOL_GPL(pm_power_off);
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void machine_halt(void)
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{
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machine_shutdown();
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ppc_md.halt();
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#ifdef CONFIG_SMP
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smp_send_stop();
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#endif
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printk(KERN_EMERG "System Halted, OK to turn off power\n");
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local_irq_disable();
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while (1) ;
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}
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#ifdef CONFIG_TAU
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extern u32 cpu_temp(unsigned long cpu);
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extern u32 cpu_temp_both(unsigned long cpu);
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#endif /* CONFIG_TAU */
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#ifdef CONFIG_SMP
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DEFINE_PER_CPU(unsigned int, pvr);
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#endif
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static int show_cpuinfo(struct seq_file *m, void *v)
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{
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unsigned long cpu_id = (unsigned long)v - 1;
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unsigned int pvr;
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unsigned short maj;
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unsigned short min;
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if (cpu_id == NR_CPUS) {
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#if defined(CONFIG_SMP) && defined(CONFIG_PPC32)
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unsigned long bogosum = 0;
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int i;
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for (i = 0; i < NR_CPUS; ++i)
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if (cpu_online(i))
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bogosum += loops_per_jiffy;
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seq_printf(m, "total bogomips\t: %lu.%02lu\n",
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bogosum/(500000/HZ), bogosum/(5000/HZ) % 100);
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#endif /* CONFIG_SMP && CONFIG_PPC32 */
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seq_printf(m, "timebase\t: %lu\n", ppc_tb_freq);
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if (ppc_md.show_cpuinfo != NULL)
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ppc_md.show_cpuinfo(m);
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return 0;
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}
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/* We only show online cpus: disable preempt (overzealous, I
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* knew) to prevent cpu going down. */
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preempt_disable();
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if (!cpu_online(cpu_id)) {
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preempt_enable();
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return 0;
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}
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#ifdef CONFIG_SMP
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#ifdef CONFIG_PPC64 /* XXX for now */
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pvr = per_cpu(pvr, cpu_id);
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#else
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pvr = cpu_data[cpu_id].pvr;
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#endif
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#else
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pvr = mfspr(SPRN_PVR);
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#endif
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maj = (pvr >> 8) & 0xFF;
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min = pvr & 0xFF;
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seq_printf(m, "processor\t: %lu\n", cpu_id);
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seq_printf(m, "cpu\t\t: ");
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if (cur_cpu_spec->pvr_mask)
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seq_printf(m, "%s", cur_cpu_spec->cpu_name);
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else
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seq_printf(m, "unknown (%08x)", pvr);
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#ifdef CONFIG_ALTIVEC
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if (cpu_has_feature(CPU_FTR_ALTIVEC))
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seq_printf(m, ", altivec supported");
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#endif /* CONFIG_ALTIVEC */
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seq_printf(m, "\n");
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#ifdef CONFIG_TAU
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if (cur_cpu_spec->cpu_features & CPU_FTR_TAU) {
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#ifdef CONFIG_TAU_AVERAGE
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/* more straightforward, but potentially misleading */
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seq_printf(m, "temperature \t: %u C (uncalibrated)\n",
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cpu_temp(i));
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#else
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/* show the actual temp sensor range */
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u32 temp;
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temp = cpu_temp_both(i);
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seq_printf(m, "temperature \t: %u-%u C (uncalibrated)\n",
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temp & 0xff, temp >> 16);
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#endif
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}
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#endif /* CONFIG_TAU */
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/*
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* Assume here that all clock rates are the same in a
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* smp system. -- Cort
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*/
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if (ppc_proc_freq)
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seq_printf(m, "clock\t\t: %lu.%06luMHz\n",
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ppc_proc_freq / 1000000, ppc_proc_freq % 1000000);
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if (ppc_md.show_percpuinfo != NULL)
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ppc_md.show_percpuinfo(m, cpu_id);
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/* If we are a Freescale core do a simple check so
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* we dont have to keep adding cases in the future */
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if (PVR_VER(pvr) & 0x8000) {
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maj = PVR_MAJ(pvr);
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min = PVR_MIN(pvr);
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} else {
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switch (PVR_VER(pvr)) {
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case 0x0020: /* 403 family */
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maj = PVR_MAJ(pvr) + 1;
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min = PVR_MIN(pvr);
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break;
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case 0x1008: /* 740P/750P ?? */
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maj = ((pvr >> 8) & 0xFF) - 1;
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min = pvr & 0xFF;
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break;
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default:
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maj = (pvr >> 8) & 0xFF;
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min = pvr & 0xFF;
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break;
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}
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}
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seq_printf(m, "revision\t: %hd.%hd (pvr %04x %04x)\n",
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maj, min, PVR_VER(pvr), PVR_REV(pvr));
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#ifdef CONFIG_PPC32
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seq_printf(m, "bogomips\t: %lu.%02lu\n",
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loops_per_jiffy / (500000/HZ),
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(loops_per_jiffy / (5000/HZ)) % 100);
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#endif
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#ifdef CONFIG_SMP
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seq_printf(m, "\n");
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#endif
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preempt_enable();
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return 0;
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}
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static void *c_start(struct seq_file *m, loff_t *pos)
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{
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unsigned long i = *pos;
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return i <= NR_CPUS ? (void *)(i + 1) : NULL;
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}
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static void *c_next(struct seq_file *m, void *v, loff_t *pos)
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{
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++*pos;
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return c_start(m, pos);
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}
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static void c_stop(struct seq_file *m, void *v)
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{
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}
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struct seq_operations cpuinfo_op = {
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.start =c_start,
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.next = c_next,
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.stop = c_stop,
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.show = show_cpuinfo,
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};
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#ifdef CONFIG_PPC_MULTIPLATFORM
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static int __init set_preferred_console(void)
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{
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struct device_node *prom_stdout = NULL;
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char *name;
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u32 *spd;
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int offset = 0;
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DBG(" -> set_preferred_console()\n");
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/* The user has requested a console so this is already set up. */
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if (strstr(saved_command_line, "console=")) {
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DBG(" console was specified !\n");
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return -EBUSY;
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}
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if (!of_chosen) {
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DBG(" of_chosen is NULL !\n");
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return -ENODEV;
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}
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/* We are getting a weird phandle from OF ... */
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/* ... So use the full path instead */
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name = (char *)get_property(of_chosen, "linux,stdout-path", NULL);
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if (name == NULL) {
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DBG(" no linux,stdout-path !\n");
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return -ENODEV;
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}
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prom_stdout = of_find_node_by_path(name);
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if (!prom_stdout) {
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DBG(" can't find stdout package %s !\n", name);
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return -ENODEV;
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}
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DBG("stdout is %s\n", prom_stdout->full_name);
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name = (char *)get_property(prom_stdout, "name", NULL);
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if (!name) {
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DBG(" stdout package has no name !\n");
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goto not_found;
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}
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spd = (u32 *)get_property(prom_stdout, "current-speed", NULL);
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if (0)
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;
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#ifdef CONFIG_SERIAL_8250_CONSOLE
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else if (strcmp(name, "serial") == 0) {
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int i;
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u32 *reg = (u32 *)get_property(prom_stdout, "reg", &i);
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if (i > 8) {
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switch (reg[1]) {
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case 0x3f8:
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offset = 0;
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break;
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case 0x2f8:
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offset = 1;
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break;
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case 0x898:
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offset = 2;
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break;
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case 0x890:
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offset = 3;
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break;
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default:
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/* We dont recognise the serial port */
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goto not_found;
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}
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}
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}
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#endif /* CONFIG_SERIAL_8250_CONSOLE */
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#ifdef CONFIG_PPC_PSERIES
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else if (strcmp(name, "vty") == 0) {
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u32 *reg = (u32 *)get_property(prom_stdout, "reg", NULL);
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char *compat = (char *)get_property(prom_stdout, "compatible", NULL);
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if (reg && compat && (strcmp(compat, "hvterm-protocol") == 0)) {
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/* Host Virtual Serial Interface */
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int offset;
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switch (reg[0]) {
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case 0x30000000:
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offset = 0;
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break;
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case 0x30000001:
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offset = 1;
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break;
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default:
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goto not_found;
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}
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of_node_put(prom_stdout);
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DBG("Found hvsi console at offset %d\n", offset);
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return add_preferred_console("hvsi", offset, NULL);
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} else {
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/* pSeries LPAR virtual console */
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of_node_put(prom_stdout);
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DBG("Found hvc console\n");
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return add_preferred_console("hvc", 0, NULL);
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}
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}
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#endif /* CONFIG_PPC_PSERIES */
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#ifdef CONFIG_SERIAL_PMACZILOG_CONSOLE
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else if (strcmp(name, "ch-a") == 0)
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offset = 0;
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else if (strcmp(name, "ch-b") == 0)
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offset = 1;
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#endif /* CONFIG_SERIAL_PMACZILOG_CONSOLE */
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else
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goto not_found;
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of_node_put(prom_stdout);
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|
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DBG("Found serial console at ttyS%d\n", offset);
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if (spd) {
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static char __initdata opt[16];
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sprintf(opt, "%d", *spd);
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return add_preferred_console("ttyS", offset, opt);
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} else
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return add_preferred_console("ttyS", offset, NULL);
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not_found:
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DBG("No preferred console found !\n");
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of_node_put(prom_stdout);
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return -ENODEV;
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}
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console_initcall(set_preferred_console);
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#endif /* CONFIG_PPC_MULTIPLATFORM */
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@ -41,6 +41,8 @@
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#include <asm/xmon.h>
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#include <asm/time.h>
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#define DBG(fmt...)
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|
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#if defined CONFIG_KGDB
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#include <asm/kgdb.h>
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#endif
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@ -108,168 +110,6 @@ struct screen_info screen_info = {
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};
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#endif /* CONFIG_VGA_CONSOLE || CONFIG_FB_VGA16 || CONFIG_FB_VESA */
|
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void machine_restart(char *cmd)
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{
|
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#ifdef CONFIG_NVRAM
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nvram_sync();
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#endif
|
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ppc_md.restart(cmd);
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}
|
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|
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void machine_power_off(void)
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{
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#ifdef CONFIG_NVRAM
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nvram_sync();
|
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#endif
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ppc_md.power_off();
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}
|
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void machine_halt(void)
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{
|
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#ifdef CONFIG_NVRAM
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nvram_sync();
|
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#endif
|
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ppc_md.halt();
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}
|
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|
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void (*pm_power_off)(void) = machine_power_off;
|
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|
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#ifdef CONFIG_TAU
|
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extern u32 cpu_temp(unsigned long cpu);
|
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extern u32 cpu_temp_both(unsigned long cpu);
|
||||
#endif /* CONFIG_TAU */
|
||||
|
||||
int show_cpuinfo(struct seq_file *m, void *v)
|
||||
{
|
||||
int i = (int) v - 1;
|
||||
unsigned int pvr;
|
||||
unsigned short maj, min;
|
||||
unsigned long lpj;
|
||||
|
||||
if (i >= NR_CPUS) {
|
||||
/* Show summary information */
|
||||
#ifdef CONFIG_SMP
|
||||
unsigned long bogosum = 0;
|
||||
for (i = 0; i < NR_CPUS; ++i)
|
||||
if (cpu_online(i))
|
||||
bogosum += cpu_data[i].loops_per_jiffy;
|
||||
seq_printf(m, "total bogomips\t: %lu.%02lu\n",
|
||||
bogosum/(500000/HZ), bogosum/(5000/HZ) % 100);
|
||||
#endif /* CONFIG_SMP */
|
||||
|
||||
if (ppc_md.show_cpuinfo != NULL)
|
||||
ppc_md.show_cpuinfo(m);
|
||||
return 0;
|
||||
}
|
||||
|
||||
#ifdef CONFIG_SMP
|
||||
if (!cpu_online(i))
|
||||
return 0;
|
||||
pvr = cpu_data[i].pvr;
|
||||
lpj = cpu_data[i].loops_per_jiffy;
|
||||
#else
|
||||
pvr = mfspr(SPRN_PVR);
|
||||
lpj = loops_per_jiffy;
|
||||
#endif
|
||||
|
||||
seq_printf(m, "processor\t: %d\n", i);
|
||||
seq_printf(m, "cpu\t\t: ");
|
||||
|
||||
if (cur_cpu_spec->pvr_mask)
|
||||
seq_printf(m, "%s", cur_cpu_spec->cpu_name);
|
||||
else
|
||||
seq_printf(m, "unknown (%08x)", pvr);
|
||||
#ifdef CONFIG_ALTIVEC
|
||||
if (cur_cpu_spec->cpu_features & CPU_FTR_ALTIVEC)
|
||||
seq_printf(m, ", altivec supported");
|
||||
#endif
|
||||
seq_printf(m, "\n");
|
||||
|
||||
#ifdef CONFIG_TAU
|
||||
if (cur_cpu_spec->cpu_features & CPU_FTR_TAU) {
|
||||
#ifdef CONFIG_TAU_AVERAGE
|
||||
/* more straightforward, but potentially misleading */
|
||||
seq_printf(m, "temperature \t: %u C (uncalibrated)\n",
|
||||
cpu_temp(i));
|
||||
#else
|
||||
/* show the actual temp sensor range */
|
||||
u32 temp;
|
||||
temp = cpu_temp_both(i);
|
||||
seq_printf(m, "temperature \t: %u-%u C (uncalibrated)\n",
|
||||
temp & 0xff, temp >> 16);
|
||||
#endif
|
||||
}
|
||||
#endif /* CONFIG_TAU */
|
||||
|
||||
if (ppc_md.show_percpuinfo != NULL)
|
||||
ppc_md.show_percpuinfo(m, i);
|
||||
|
||||
/* If we are a Freescale core do a simple check so
|
||||
* we dont have to keep adding cases in the future */
|
||||
if (PVR_VER(pvr) & 0x8000) {
|
||||
maj = PVR_MAJ(pvr);
|
||||
min = PVR_MIN(pvr);
|
||||
} else {
|
||||
switch (PVR_VER(pvr)) {
|
||||
case 0x0020: /* 403 family */
|
||||
maj = PVR_MAJ(pvr) + 1;
|
||||
min = PVR_MIN(pvr);
|
||||
break;
|
||||
case 0x1008: /* 740P/750P ?? */
|
||||
maj = ((pvr >> 8) & 0xFF) - 1;
|
||||
min = pvr & 0xFF;
|
||||
break;
|
||||
default:
|
||||
maj = (pvr >> 8) & 0xFF;
|
||||
min = pvr & 0xFF;
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
/*
|
||||
* Assume here that all clock rates are the same in a
|
||||
* smp system. -- Cort
|
||||
*/
|
||||
seq_printf(m, "clock\t\t: %lu.%06luMHz\n", ppc_proc_freq / 1000000,
|
||||
ppc_proc_freq % 1000000);
|
||||
|
||||
seq_printf(m, "revision\t: %hd.%hd (pvr %04x %04x)\n",
|
||||
maj, min, PVR_VER(pvr), PVR_REV(pvr));
|
||||
|
||||
seq_printf(m, "bogomips\t: %lu.%02lu\n",
|
||||
lpj / (500000/HZ), (lpj / (5000/HZ)) % 100);
|
||||
|
||||
#ifdef CONFIG_SMP
|
||||
seq_printf(m, "\n");
|
||||
#endif
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void *c_start(struct seq_file *m, loff_t *pos)
|
||||
{
|
||||
int i = *pos;
|
||||
|
||||
return i <= NR_CPUS? (void *) (i + 1): NULL;
|
||||
}
|
||||
|
||||
static void *c_next(struct seq_file *m, void *v, loff_t *pos)
|
||||
{
|
||||
++*pos;
|
||||
return c_start(m, pos);
|
||||
}
|
||||
|
||||
static void c_stop(struct seq_file *m, void *v)
|
||||
{
|
||||
}
|
||||
|
||||
struct seq_operations cpuinfo_op = {
|
||||
.start =c_start,
|
||||
.next = c_next,
|
||||
.stop = c_stop,
|
||||
.show = show_cpuinfo,
|
||||
};
|
||||
|
||||
/*
|
||||
* We're called here very early in the boot. We determine the machine
|
||||
* type and call the appropriate low-level setup functions.
|
||||
@ -297,30 +137,6 @@ unsigned long __init early_init(unsigned long dt_ptr)
|
||||
return KERNELBASE + offset;
|
||||
}
|
||||
|
||||
#ifdef CONFIG_PPC_OF
|
||||
void __init
|
||||
intuit_machine_type(void)
|
||||
{
|
||||
char *model;
|
||||
struct device_node *root;
|
||||
|
||||
/* ask the OF info if we're a chrp or pmac */
|
||||
root = find_path_device("/");
|
||||
if (root != 0) {
|
||||
/* assume pmac unless proven to be chrp -- Cort */
|
||||
_machine = _MACH_Pmac;
|
||||
model = get_property(root, "device_type", NULL);
|
||||
if (model && !strncmp("chrp", model, 4))
|
||||
_machine = _MACH_chrp;
|
||||
else {
|
||||
model = get_property(root, "model", NULL);
|
||||
if (model && !strncmp(model, "IBM", 3))
|
||||
_machine = _MACH_chrp;
|
||||
}
|
||||
}
|
||||
}
|
||||
#endif
|
||||
|
||||
#ifdef CONFIG_PPC_MULTIPLATFORM
|
||||
/*
|
||||
* The PPC_MULTIPLATFORM version of platform_init...
|
||||
@ -362,64 +178,7 @@ void __init platform_init(void)
|
||||
#endif
|
||||
}
|
||||
}
|
||||
|
||||
#ifdef CONFIG_SERIAL_CORE_CONSOLE
|
||||
extern char *of_stdout_device;
|
||||
|
||||
static int __init set_preferred_console(void)
|
||||
{
|
||||
struct device_node *prom_stdout;
|
||||
char *name;
|
||||
int offset = 0;
|
||||
|
||||
if (of_stdout_device == NULL)
|
||||
return -ENODEV;
|
||||
|
||||
/* The user has requested a console so this is already set up. */
|
||||
if (strstr(saved_command_line, "console="))
|
||||
return -EBUSY;
|
||||
|
||||
prom_stdout = find_path_device(of_stdout_device);
|
||||
if (!prom_stdout)
|
||||
return -ENODEV;
|
||||
|
||||
name = (char *)get_property(prom_stdout, "name", NULL);
|
||||
if (!name)
|
||||
return -ENODEV;
|
||||
|
||||
if (strcmp(name, "serial") == 0) {
|
||||
int i;
|
||||
u32 *reg = (u32 *)get_property(prom_stdout, "reg", &i);
|
||||
if (i > 8) {
|
||||
switch (reg[1]) {
|
||||
case 0x3f8:
|
||||
offset = 0;
|
||||
break;
|
||||
case 0x2f8:
|
||||
offset = 1;
|
||||
break;
|
||||
case 0x898:
|
||||
offset = 2;
|
||||
break;
|
||||
case 0x890:
|
||||
offset = 3;
|
||||
break;
|
||||
default:
|
||||
/* We dont recognise the serial port */
|
||||
return -ENODEV;
|
||||
}
|
||||
}
|
||||
} else if (strcmp(name, "ch-a") == 0)
|
||||
offset = 0;
|
||||
else if (strcmp(name, "ch-b") == 0)
|
||||
offset = 1;
|
||||
else
|
||||
return -ENODEV;
|
||||
return add_preferred_console("ttyS", offset, NULL);
|
||||
}
|
||||
console_initcall(set_preferred_console);
|
||||
#endif /* CONFIG_SERIAL_CORE_CONSOLE */
|
||||
#endif /* CONFIG_PPC_MULTIPLATFORM */
|
||||
#endif
|
||||
|
||||
/*
|
||||
* Find out what kind of machine we're on and save any data we need
|
||||
@ -545,7 +304,7 @@ void __init setup_arch(char **cmdline_p)
|
||||
init_boot_display();
|
||||
#endif
|
||||
|
||||
#ifdef CONFIG_PPC_MULTIPLATFORM
|
||||
#ifdef CONFIG_PPC_PMAC
|
||||
/* This could be called "early setup arch", it must be done
|
||||
* now because xmon need it
|
||||
*/
|
||||
|
||||
Loading…
Reference in New Issue
Block a user