powerpc: Merge maple support code to arch/powerpc/platforms/maple
Signed-off-by: Paul Mackerras <paulus@samba.org>
This commit is contained in:
Paul Mackerras
295
arch/powerpc/platforms/maple/setup.c
Normal file
295
arch/powerpc/platforms/maple/setup.c
Normal file
@@ -0,0 +1,295 @@
|
||||
/*
|
||||
* Maple (970 eval board) setup code
|
||||
*
|
||||
* (c) Copyright 2004 Benjamin Herrenschmidt (benh@kernel.crashing.org),
|
||||
* IBM Corp.
|
||||
*
|
||||
* 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.
|
||||
*
|
||||
*/
|
||||
|
||||
#define DEBUG
|
||||
|
||||
#include <linux/config.h>
|
||||
#include <linux/init.h>
|
||||
#include <linux/errno.h>
|
||||
#include <linux/sched.h>
|
||||
#include <linux/kernel.h>
|
||||
#include <linux/mm.h>
|
||||
#include <linux/stddef.h>
|
||||
#include <linux/unistd.h>
|
||||
#include <linux/ptrace.h>
|
||||
#include <linux/slab.h>
|
||||
#include <linux/user.h>
|
||||
#include <linux/a.out.h>
|
||||
#include <linux/tty.h>
|
||||
#include <linux/string.h>
|
||||
#include <linux/delay.h>
|
||||
#include <linux/ioport.h>
|
||||
#include <linux/major.h>
|
||||
#include <linux/initrd.h>
|
||||
#include <linux/vt_kern.h>
|
||||
#include <linux/console.h>
|
||||
#include <linux/ide.h>
|
||||
#include <linux/pci.h>
|
||||
#include <linux/adb.h>
|
||||
#include <linux/cuda.h>
|
||||
#include <linux/pmu.h>
|
||||
#include <linux/irq.h>
|
||||
#include <linux/seq_file.h>
|
||||
#include <linux/root_dev.h>
|
||||
#include <linux/serial.h>
|
||||
#include <linux/smp.h>
|
||||
|
||||
#include <asm/processor.h>
|
||||
#include <asm/sections.h>
|
||||
#include <asm/prom.h>
|
||||
#include <asm/system.h>
|
||||
#include <asm/pgtable.h>
|
||||
#include <asm/bitops.h>
|
||||
#include <asm/io.h>
|
||||
#include <asm/pci-bridge.h>
|
||||
#include <asm/iommu.h>
|
||||
#include <asm/machdep.h>
|
||||
#include <asm/dma.h>
|
||||
#include <asm/cputable.h>
|
||||
#include <asm/time.h>
|
||||
#include <asm/of_device.h>
|
||||
#include <asm/lmb.h>
|
||||
#include <asm/mpic.h>
|
||||
#include <asm/udbg.h>
|
||||
|
||||
#include "maple.h"
|
||||
|
||||
#ifdef DEBUG
|
||||
#define DBG(fmt...) udbg_printf(fmt)
|
||||
#else
|
||||
#define DBG(fmt...)
|
||||
#endif
|
||||
|
||||
extern void generic_find_legacy_serial_ports(u64 *physport,
|
||||
unsigned int *default_speed);
|
||||
|
||||
static void maple_restart(char *cmd)
|
||||
{
|
||||
unsigned int maple_nvram_base;
|
||||
unsigned int maple_nvram_offset;
|
||||
unsigned int maple_nvram_command;
|
||||
struct device_node *rtcs;
|
||||
|
||||
/* find NVRAM device */
|
||||
rtcs = find_compatible_devices("nvram", "AMD8111");
|
||||
if (rtcs && rtcs->addrs) {
|
||||
maple_nvram_base = rtcs->addrs[0].address;
|
||||
} else {
|
||||
printk(KERN_EMERG "Maple: Unable to find NVRAM\n");
|
||||
printk(KERN_EMERG "Maple: Manual Restart Required\n");
|
||||
return;
|
||||
}
|
||||
|
||||
/* find service processor device */
|
||||
rtcs = find_devices("service-processor");
|
||||
if (!rtcs) {
|
||||
printk(KERN_EMERG "Maple: Unable to find Service Processor\n");
|
||||
printk(KERN_EMERG "Maple: Manual Restart Required\n");
|
||||
return;
|
||||
}
|
||||
maple_nvram_offset = *(unsigned int*) get_property(rtcs,
|
||||
"restart-addr", NULL);
|
||||
maple_nvram_command = *(unsigned int*) get_property(rtcs,
|
||||
"restart-value", NULL);
|
||||
|
||||
/* send command */
|
||||
outb_p(maple_nvram_command, maple_nvram_base + maple_nvram_offset);
|
||||
for (;;) ;
|
||||
}
|
||||
|
||||
static void maple_power_off(void)
|
||||
{
|
||||
unsigned int maple_nvram_base;
|
||||
unsigned int maple_nvram_offset;
|
||||
unsigned int maple_nvram_command;
|
||||
struct device_node *rtcs;
|
||||
|
||||
/* find NVRAM device */
|
||||
rtcs = find_compatible_devices("nvram", "AMD8111");
|
||||
if (rtcs && rtcs->addrs) {
|
||||
maple_nvram_base = rtcs->addrs[0].address;
|
||||
} else {
|
||||
printk(KERN_EMERG "Maple: Unable to find NVRAM\n");
|
||||
printk(KERN_EMERG "Maple: Manual Power-Down Required\n");
|
||||
return;
|
||||
}
|
||||
|
||||
/* find service processor device */
|
||||
rtcs = find_devices("service-processor");
|
||||
if (!rtcs) {
|
||||
printk(KERN_EMERG "Maple: Unable to find Service Processor\n");
|
||||
printk(KERN_EMERG "Maple: Manual Power-Down Required\n");
|
||||
return;
|
||||
}
|
||||
maple_nvram_offset = *(unsigned int*) get_property(rtcs,
|
||||
"power-off-addr", NULL);
|
||||
maple_nvram_command = *(unsigned int*) get_property(rtcs,
|
||||
"power-off-value", NULL);
|
||||
|
||||
/* send command */
|
||||
outb_p(maple_nvram_command, maple_nvram_base + maple_nvram_offset);
|
||||
for (;;) ;
|
||||
}
|
||||
|
||||
static void maple_halt(void)
|
||||
{
|
||||
maple_power_off();
|
||||
}
|
||||
|
||||
#ifdef CONFIG_SMP
|
||||
struct smp_ops_t maple_smp_ops = {
|
||||
.probe = smp_mpic_probe,
|
||||
.message_pass = smp_mpic_message_pass,
|
||||
.kick_cpu = smp_generic_kick_cpu,
|
||||
.setup_cpu = smp_mpic_setup_cpu,
|
||||
.give_timebase = smp_generic_give_timebase,
|
||||
.take_timebase = smp_generic_take_timebase,
|
||||
};
|
||||
#endif /* CONFIG_SMP */
|
||||
|
||||
void __init maple_setup_arch(void)
|
||||
{
|
||||
/* init to some ~sane value until calibrate_delay() runs */
|
||||
loops_per_jiffy = 50000000;
|
||||
|
||||
/* Setup SMP callback */
|
||||
#ifdef CONFIG_SMP
|
||||
smp_ops = &maple_smp_ops;
|
||||
#endif
|
||||
/* Lookup PCI hosts */
|
||||
maple_pci_init();
|
||||
|
||||
#ifdef CONFIG_DUMMY_CONSOLE
|
||||
conswitchp = &dummy_con;
|
||||
#endif
|
||||
|
||||
printk(KERN_INFO "Using native/NAP idle loop\n");
|
||||
}
|
||||
|
||||
/*
|
||||
* Early initialization.
|
||||
*/
|
||||
static void __init maple_init_early(void)
|
||||
{
|
||||
unsigned int default_speed;
|
||||
u64 physport;
|
||||
|
||||
DBG(" -> maple_init_early\n");
|
||||
|
||||
/* Initialize hash table, from now on, we can take hash faults
|
||||
* and call ioremap
|
||||
*/
|
||||
hpte_init_native();
|
||||
|
||||
/* Find the serial port */
|
||||
generic_find_legacy_serial_ports(&physport, &default_speed);
|
||||
|
||||
DBG("phys port addr: %lx\n", (long)physport);
|
||||
|
||||
if (physport) {
|
||||
void *comport;
|
||||
/* Map the uart for udbg. */
|
||||
comport = (void *)ioremap(physport, 16);
|
||||
udbg_init_uart(comport, default_speed);
|
||||
|
||||
DBG("Hello World !\n");
|
||||
}
|
||||
|
||||
/* Setup interrupt mapping options */
|
||||
ppc64_interrupt_controller = IC_OPEN_PIC;
|
||||
|
||||
iommu_init_early_u3();
|
||||
|
||||
DBG(" <- maple_init_early\n");
|
||||
}
|
||||
|
||||
|
||||
static __init void maple_init_IRQ(void)
|
||||
{
|
||||
struct device_node *root;
|
||||
unsigned int *opprop;
|
||||
unsigned long opic_addr;
|
||||
struct mpic *mpic;
|
||||
unsigned char senses[128];
|
||||
int n;
|
||||
|
||||
DBG(" -> maple_init_IRQ\n");
|
||||
|
||||
/* XXX: Non standard, replace that with a proper openpic/mpic node
|
||||
* in the device-tree. Find the Open PIC if present */
|
||||
root = of_find_node_by_path("/");
|
||||
opprop = (unsigned int *) get_property(root,
|
||||
"platform-open-pic", NULL);
|
||||
if (opprop == 0)
|
||||
panic("OpenPIC not found !\n");
|
||||
|
||||
n = prom_n_addr_cells(root);
|
||||
for (opic_addr = 0; n > 0; --n)
|
||||
opic_addr = (opic_addr << 32) + *opprop++;
|
||||
of_node_put(root);
|
||||
|
||||
/* Obtain sense values from device-tree */
|
||||
prom_get_irq_senses(senses, 0, 128);
|
||||
|
||||
mpic = mpic_alloc(opic_addr,
|
||||
MPIC_PRIMARY | MPIC_BIG_ENDIAN |
|
||||
MPIC_BROKEN_U3 | MPIC_WANTS_RESET,
|
||||
0, 0, 128, 128, senses, 128, "U3-MPIC");
|
||||
BUG_ON(mpic == NULL);
|
||||
mpic_init(mpic);
|
||||
|
||||
DBG(" <- maple_init_IRQ\n");
|
||||
}
|
||||
|
||||
static void __init maple_progress(char *s, unsigned short hex)
|
||||
{
|
||||
printk("*** %04x : %s\n", hex, s ? s : "");
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
* Called very early, MMU is off, device-tree isn't unflattened
|
||||
*/
|
||||
static int __init maple_probe(int platform)
|
||||
{
|
||||
if (platform != PLATFORM_MAPLE)
|
||||
return 0;
|
||||
/*
|
||||
* On U3, the DART (iommu) must be allocated now since it
|
||||
* has an impact on htab_initialize (due to the large page it
|
||||
* occupies having to be broken up so the DART itself is not
|
||||
* part of the cacheable linar mapping
|
||||
*/
|
||||
alloc_u3_dart_table();
|
||||
|
||||
return 1;
|
||||
}
|
||||
|
||||
struct machdep_calls __initdata maple_md = {
|
||||
.probe = maple_probe,
|
||||
.setup_arch = maple_setup_arch,
|
||||
.init_early = maple_init_early,
|
||||
.init_IRQ = maple_init_IRQ,
|
||||
.get_irq = mpic_get_irq,
|
||||
.pcibios_fixup = maple_pcibios_fixup,
|
||||
.pci_get_legacy_ide_irq = maple_pci_get_legacy_ide_irq,
|
||||
.restart = maple_restart,
|
||||
.power_off = maple_power_off,
|
||||
.halt = maple_halt,
|
||||
.get_boot_time = maple_get_boot_time,
|
||||
.set_rtc_time = maple_set_rtc_time,
|
||||
.get_rtc_time = maple_get_rtc_time,
|
||||
.calibrate_decr = generic_calibrate_decr,
|
||||
.progress = maple_progress,
|
||||
.idle_loop = native_idle,
|
||||
};
|
||||
Reference in New Issue
Block a user