10f7e7c15e
pSeries and maple have almost the same code for calibrate_decr, and BPA would need yet another copy. Instead, I'm moving the code to arch/ppc64/kernel/time.c. Some of the related declarations were missing from header files, so I'm moving those as well. It makes sense to merge this with the pmac function of the same name, so we end up having just one implemetation for iSeries and one for Open Firmware based machines. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Paul Mackerras <paulus@samba.org>
241 lines
5.6 KiB
C
241 lines
5.6 KiB
C
/*
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* arch/ppc64/kernel/maple_setup.c
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*
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* (c) Copyright 2004 Benjamin Herrenschmidt (benh@kernel.crashing.org),
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* 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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*/
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#define DEBUG
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#include <linux/config.h>
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#include <linux/init.h>
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#include <linux/errno.h>
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#include <linux/sched.h>
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#include <linux/kernel.h>
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#include <linux/mm.h>
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#include <linux/stddef.h>
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#include <linux/unistd.h>
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#include <linux/ptrace.h>
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#include <linux/slab.h>
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#include <linux/user.h>
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#include <linux/a.out.h>
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#include <linux/tty.h>
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#include <linux/string.h>
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#include <linux/delay.h>
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#include <linux/ioport.h>
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#include <linux/major.h>
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#include <linux/initrd.h>
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#include <linux/vt_kern.h>
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#include <linux/console.h>
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#include <linux/ide.h>
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#include <linux/pci.h>
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#include <linux/adb.h>
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#include <linux/cuda.h>
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#include <linux/pmu.h>
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#include <linux/irq.h>
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#include <linux/seq_file.h>
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#include <linux/root_dev.h>
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#include <linux/serial.h>
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#include <linux/smp.h>
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#include <asm/processor.h>
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#include <asm/sections.h>
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#include <asm/prom.h>
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#include <asm/system.h>
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#include <asm/pgtable.h>
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#include <asm/bitops.h>
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#include <asm/io.h>
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#include <asm/pci-bridge.h>
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#include <asm/iommu.h>
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#include <asm/machdep.h>
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#include <asm/dma.h>
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#include <asm/cputable.h>
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#include <asm/time.h>
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#include <asm/of_device.h>
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#include <asm/lmb.h>
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#include "mpic.h"
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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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extern int maple_set_rtc_time(struct rtc_time *tm);
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extern void maple_get_rtc_time(struct rtc_time *tm);
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extern void maple_get_boot_time(struct rtc_time *tm);
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extern void maple_calibrate_decr(void);
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extern void maple_pci_init(void);
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extern void maple_pcibios_fixup(void);
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extern int maple_pci_get_legacy_ide_irq(struct pci_dev *dev, int channel);
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extern void generic_find_legacy_serial_ports(u64 *physport,
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unsigned int *default_speed);
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static void maple_restart(char *cmd)
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{
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}
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static void maple_power_off(void)
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{
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}
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static void maple_halt(void)
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{
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}
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#ifdef CONFIG_SMP
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struct smp_ops_t maple_smp_ops = {
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.probe = smp_mpic_probe,
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.message_pass = smp_mpic_message_pass,
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.kick_cpu = smp_generic_kick_cpu,
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.setup_cpu = smp_mpic_setup_cpu,
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.give_timebase = smp_generic_give_timebase,
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.take_timebase = smp_generic_take_timebase,
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};
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#endif /* CONFIG_SMP */
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void __init maple_setup_arch(void)
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{
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/* init to some ~sane value until calibrate_delay() runs */
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loops_per_jiffy = 50000000;
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/* Setup SMP callback */
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#ifdef CONFIG_SMP
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smp_ops = &maple_smp_ops;
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#endif
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/* Lookup PCI hosts */
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maple_pci_init();
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#ifdef CONFIG_DUMMY_CONSOLE
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conswitchp = &dummy_con;
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#endif
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}
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/*
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* Early initialization.
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*/
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static void __init maple_init_early(void)
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{
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unsigned int default_speed;
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u64 physport;
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DBG(" -> maple_init_early\n");
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/* Initialize hash table, from now on, we can take hash faults
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* and call ioremap
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*/
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hpte_init_native();
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/* Find the serial port */
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generic_find_legacy_serial_ports(&physport, &default_speed);
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DBG("phys port addr: %lx\n", (long)physport);
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if (physport) {
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void *comport;
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/* Map the uart for udbg. */
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comport = (void *)ioremap(physport, 16);
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udbg_init_uart(comport, default_speed);
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ppc_md.udbg_putc = udbg_putc;
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ppc_md.udbg_getc = udbg_getc;
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ppc_md.udbg_getc_poll = udbg_getc_poll;
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DBG("Hello World !\n");
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}
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/* Setup interrupt mapping options */
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ppc64_interrupt_controller = IC_OPEN_PIC;
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iommu_init_early_u3();
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DBG(" <- maple_init_early\n");
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}
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static __init void maple_init_IRQ(void)
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{
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struct device_node *root;
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unsigned int *opprop;
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unsigned long opic_addr;
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struct mpic *mpic;
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unsigned char senses[128];
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int n;
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DBG(" -> maple_init_IRQ\n");
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/* XXX: Non standard, replace that with a proper openpic/mpic node
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* in the device-tree. Find the Open PIC if present */
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root = of_find_node_by_path("/");
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opprop = (unsigned int *) get_property(root,
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"platform-open-pic", NULL);
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if (opprop == 0)
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panic("OpenPIC not found !\n");
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n = prom_n_addr_cells(root);
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for (opic_addr = 0; n > 0; --n)
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opic_addr = (opic_addr << 32) + *opprop++;
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of_node_put(root);
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/* Obtain sense values from device-tree */
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prom_get_irq_senses(senses, 0, 128);
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mpic = mpic_alloc(opic_addr,
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MPIC_PRIMARY | MPIC_BIG_ENDIAN |
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MPIC_BROKEN_U3 | MPIC_WANTS_RESET,
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0, 0, 128, 128, senses, 128, "U3-MPIC");
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BUG_ON(mpic == NULL);
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mpic_init(mpic);
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DBG(" <- maple_init_IRQ\n");
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}
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static void __init maple_progress(char *s, unsigned short hex)
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{
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printk("*** %04x : %s\n", hex, s ? s : "");
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}
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/*
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* Called very early, MMU is off, device-tree isn't unflattened
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*/
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static int __init maple_probe(int platform)
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{
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if (platform != PLATFORM_MAPLE)
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return 0;
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/*
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* On U3, the DART (iommu) must be allocated now since it
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* has an impact on htab_initialize (due to the large page it
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* occupies having to be broken up so the DART itself is not
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* part of the cacheable linar mapping
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*/
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alloc_u3_dart_table();
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return 1;
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}
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struct machdep_calls __initdata maple_md = {
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.probe = maple_probe,
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.setup_arch = maple_setup_arch,
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.init_early = maple_init_early,
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.init_IRQ = maple_init_IRQ,
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.get_irq = mpic_get_irq,
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.pcibios_fixup = maple_pcibios_fixup,
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.pci_get_legacy_ide_irq = maple_pci_get_legacy_ide_irq,
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.restart = maple_restart,
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.power_off = maple_power_off,
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.halt = maple_halt,
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.get_boot_time = maple_get_boot_time,
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.set_rtc_time = maple_set_rtc_time,
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.get_rtc_time = maple_get_rtc_time,
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.calibrate_decr = generic_calibrate_decr,
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.progress = maple_progress,
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};
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