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/*
* BK Id: SCCS/s.chrp_setup.c 1.40 12/19/01 09:45:54 trini
*/
/*
* linux/arch/ppc/kernel/setup.c
*
* Copyright (C) 1995 Linus Torvalds
* Adapted from 'alpha' version by Gary Thomas
* Modified by Cort Dougan (cort@cs.nmt.edu)
*/
/*
* bootup setup stuff..
*/
#include <linux/config.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/major.h>
#include <linux/interrupt.h>
#include <linux/reboot.h>
#include <linux/init.h>
#include <linux/blk.h>
#include <linux/ioport.h>
#include <linux/console.h>
#include <linux/pci.h>
#include <linux/version.h>
#include <linux/adb.h>
#include <linux/module.h>
#include <linux/delay.h>
#include <linux/ide.h>
#include <linux/seq_file.h>
#include <asm/mmu.h>
#include <asm/processor.h>
#include <asm/io.h>
#include <asm/pgtable.h>
#include <asm/prom.h>
#include <asm/gg2.h>
#include <asm/pci-bridge.h>
#include <asm/dma.h>
#include <asm/machdep.h>
#include <asm/irq.h>
#include <asm/hydra.h>
#include <asm/keyboard.h>
#include <asm/sections.h>
#include <asm/time.h>
#include <asm/btext.h>
#include "local_irq.h"
#include "i8259.h"
#include "open_pic.h"
#include "xics.h"
unsigned long chrp_get_rtc_time(void);
int chrp_set_rtc_time(unsigned long nowtime);
void chrp_calibrate_decr(void);
long chrp_time_init(void);
void chrp_find_bridges(void);
void chrp_event_scan(void);
void rtas_display_progress(char *, unsigned short);
void rtas_indicator_progress(char *, unsigned short);
void btext_progress(char *, unsigned short);
extern unsigned long pmac_find_end_of_memory(void);
extern int pckbd_setkeycode(unsigned int scancode, unsigned int keycode);
extern int pckbd_getkeycode(unsigned int scancode);
extern int pckbd_translate(unsigned char scancode, unsigned char *keycode,
char raw_mode);
extern char pckbd_unexpected_up(unsigned char keycode);
extern void pckbd_leds(unsigned char leds);
extern void pckbd_init_hw(void);
extern unsigned char pckbd_sysrq_xlate[128];
extern void select_adb_keyboard(void);
extern int of_show_percpuinfo(struct seq_file *, int);
extern kdev_t boot_dev;
extern PTE *Hash, *Hash_end;
extern unsigned long Hash_size, Hash_mask;
extern int probingmem;
extern unsigned long loops_per_jiffy;
static int max_width;
#ifdef CONFIG_SMP
extern struct smp_ops_t chrp_smp_ops;
extern struct smp_ops_t xics_smp_ops;
#endif
static const char *gg2_memtypes[4] = {
"FPM", "SDRAM", "EDO", "BEDO"
};
static const char *gg2_cachesizes[4] = {
"256 KB", "512 KB", "1 MB", "Reserved"
};
static const char *gg2_cachetypes[4] = {
"Asynchronous", "Reserved", "Flow-Through Synchronous",
"Pipelined Synchronous"
};
static const char *gg2_cachemodes[4] = {
"Disabled", "Write-Through", "Copy-Back", "Transparent Mode"
};
int __chrp
chrp_show_cpuinfo(struct seq_file *m)
{
int i, sdramen;
unsigned int t;
struct device_node *root;
const char *model = "";
root = find_path_device("/");
if (root)
model = get_property(root, "model", NULL);
seq_printf(m, "machine\t\t: CHRP %s\n", model);
/* longtrail (goldengate) stuff */
if (!strncmp(model, "IBM,LongTrail", 13)) {
/* VLSI VAS96011/12 `Golden Gate 2' */
/* Memory banks */
sdramen = (in_le32((unsigned *)(GG2_PCI_CONFIG_BASE+
GG2_PCI_DRAM_CTRL))
>>31) & 1;
for (i = 0; i < (sdramen ? 4 : 6); i++) {
t = in_le32((unsigned *)(GG2_PCI_CONFIG_BASE+
GG2_PCI_DRAM_BANK0+
i*4));
if (!(t & 1))
continue;
switch ((t>>8) & 0x1f) {
case 0x1f:
model = "4 MB";
break;
case 0x1e:
model = "8 MB";
break;
case 0x1c:
model = "16 MB";
break;
case 0x18:
model = "32 MB";
break;
case 0x10:
model = "64 MB";
break;
case 0x00:
model = "128 MB";
break;
default:
model = "Reserved";
break;
}
seq_printf(m, "memory bank %d\t: %s %s\n", i, model,
gg2_memtypes[sdramen ? 1 : ((t>>1) & 3)]);
}
/* L2 cache */
t = in_le32((unsigned *)(GG2_PCI_CONFIG_BASE+GG2_PCI_CC_CTRL));
seq_printf(m, "board l2\t: %s %s (%s)\n",
gg2_cachesizes[(t>>7) & 3],
gg2_cachetypes[(t>>2) & 3],
gg2_cachemodes[t & 3]);
}
return 0;
}
/*
* Fixes for the National Semiconductor PC78308VUL SuperI/O
*
* Some versions of Open Firmware incorrectly initialize the IRQ settings
* for keyboard and mouse
*/
static inline void __init sio_write(u8 val, u8 index)
{
outb(index, 0x15c);
outb(val, 0x15d);
}
static inline u8 __init sio_read(u8 index)
{
outb(index, 0x15c);
return inb(0x15d);
}
static void __init sio_fixup_irq(const char *name, u8 device, u8 level,
u8 type)
{
u8 level0, type0, active;
/* select logical device */
sio_write(device, 0x07);
active = sio_read(0x30);
level0 = sio_read(0x70);
type0 = sio_read(0x71);
if (level0 != level || type0 != type || !active) {
printk(KERN_WARNING "sio: %s irq level %d, type %d, %sactive: "
"remapping to level %d, type %d, active\n",
name, level0, type0, !active ? "in" : "", level, type);
sio_write(0x01, 0x30);
sio_write(level, 0x70);
sio_write(type, 0x71);
}
}
static void __init sio_init(void)
{
struct device_node *root;
if ((root = find_path_device("/")) &&
!strncmp(get_property(root, "model", NULL), "IBM,LongTrail", 13)) {
/* logical device 0 (KBC/Keyboard) */
sio_fixup_irq("keyboard", 0, 1, 2);
/* select logical device 1 (KBC/Mouse) */
sio_fixup_irq("mouse", 1, 12, 2);
}
}
void __init
chrp_setup_arch(void)
{
struct device_node *device;
/* init to some ~sane value until calibrate_delay() runs */
loops_per_jiffy = 50000000/HZ;
#ifdef CONFIG_BLK_DEV_INITRD
/* this is fine for chrp */
initrd_below_start_ok = 1;
if (initrd_start)
ROOT_DEV = MKDEV(RAMDISK_MAJOR, 0);
else
#endif
ROOT_DEV = to_kdev_t(0x0802); /* sda2 (sda1 is for the kernel) */
/* Lookup PCI host bridges */
chrp_find_bridges();
#ifndef CONFIG_PPC64BRIDGE
/*
* Temporary fixes for PCI devices.
* -- Geert
*/
hydra_init(); /* Mac I/O */
#endif /* CONFIG_PPC64BRIDGE */
/* Some IBM machines don't have the hydra -- Cort */
if (!OpenPIC_Addr) {
struct device_node *root;
unsigned long *opprop;
int n;
root = find_path_device("/");
opprop = (unsigned long *) get_property
(root, "platform-open-pic", NULL);
n = prom_n_addr_cells(root);
if (opprop != 0) {
printk("OpenPIC addrs: %lx %lx %lx\n",
opprop[n-1], opprop[2*n-1], opprop[3*n-1]);
OpenPIC_Addr = ioremap(opprop[n-1], 0x40000);
}
}
/*
* Fix the Super I/O configuration
*/
sio_init();
/*
* Setup the console operations
*/
#ifdef CONFIG_DUMMY_CONSOLE
conswitchp = &dummy_con;
#endif
/* Get the event scan rate for the rtas so we know how
* often it expects a heartbeat. -- Cort
*/
if ( rtas_data ) {
struct property *p;
device = find_devices("rtas");
for ( p = device->properties;
p && strncmp(p->name, "rtas-event-scan-rate", 20);
p = p->next )
/* nothing */ ;
if ( p && *(unsigned long *)p->value ) {
ppc_md.heartbeat = chrp_event_scan;
ppc_md.heartbeat_reset = (HZ/(*(unsigned long *)p->value)*30)-1;
ppc_md.heartbeat_count = 1;
printk("RTAS Event Scan Rate: %lu (%lu jiffies)\n",
*(unsigned long *)p->value, ppc_md.heartbeat_reset );
}
}
}
void __chrp
chrp_event_scan(void)
{
unsigned char log[1024];
unsigned long ret = 0;
/* XXX: we should loop until the hardware says no more error logs -- Cort */
call_rtas( "event-scan", 4, 1, &ret, 0xffffffff, 0,
__pa(log), 1024 );
ppc_md.heartbeat_count = ppc_md.heartbeat_reset;
}
void __chrp
chrp_restart(char *cmd)
{
printk("RTAS system-reboot returned %d\n",
call_rtas("system-reboot", 0, 1, NULL));
for (;;);
}
void __chrp
chrp_power_off(void)
{
/* allow power on only with power button press */
printk("RTAS power-off returned %d\n",
call_rtas("power-off", 2, 1, NULL,0xffffffff,0xffffffff));
for (;;);
}
void __chrp
chrp_halt(void)
{
chrp_power_off();
}
u_int __chrp
chrp_irq_cannonicalize(u_int irq)
{
if (irq == 2)
return 9;
return irq;
}
void __init chrp_init_IRQ(void)
{
struct device_node *np;
int i;
unsigned int *addrp;
unsigned char* chrp_int_ack_special = 0;
unsigned char init_senses[NR_IRQS - NUM_8259_INTERRUPTS];
int nmi_irq = -1;
#if defined(CONFIG_VT) && defined(CONFIG_ADB_KEYBOARD) && defined(XMON)
struct device_node *kbd;
#endif
if (!(np = find_devices("pci"))
|| !(addrp = (unsigned int *)
get_property(np, "8259-interrupt-acknowledge", NULL)))
printk("Cannot find pci to get ack address\n");
else
chrp_int_ack_special = (unsigned char *)
ioremap(addrp[prom_n_addr_cells(np)-1], 1);
/* hydra still sets OpenPIC_InitSenses to a static set of values */
if (OpenPIC_InitSenses == NULL) {
prom_get_irq_senses(init_senses, NUM_8259_INTERRUPTS, NR_IRQS);
OpenPIC_InitSenses = init_senses;
OpenPIC_NumInitSenses = NR_IRQS - NUM_8259_INTERRUPTS;
}
openpic_init(1, NUM_8259_INTERRUPTS, chrp_int_ack_special, nmi_irq);
for ( i = 0 ; i < NUM_8259_INTERRUPTS ; i++ )
irq_desc[i].handler = &i8259_pic;
i8259_init(NULL);
#if defined(CONFIG_VT) && defined(CONFIG_ADB_KEYBOARD) && defined(XMON)
/* see if there is a keyboard in the device tree
with a parent of type "adb" */
for (kbd = find_devices("keyboard"); kbd; kbd = kbd->next)
if (kbd->parent && kbd->parent->type
&& strcmp(kbd->parent->type, "adb") == 0)
break;
if (kbd)
request_irq( HYDRA_INT_ADB_NMI, xmon_irq, 0, "XMON break", 0);
#endif
}
void __init
chrp_init2(void)
{
#ifdef CONFIG_NVRAM
pmac_nvram_init();
#endif
request_region(0x20,0x20,"pic1");
request_region(0xa0,0x20,"pic2");
request_region(0x00,0x20,"dma1");
request_region(0x40,0x20,"timer");
request_region(0x80,0x10,"dma page reg");
request_region(0xc0,0x20,"dma2");
if (ppc_md.progress)
ppc_md.progress(" Have fun! ", 0x7777);
#if defined(CONFIG_VT) && (defined(CONFIG_ADB_KEYBOARD) || defined(CONFIG_INPUT))
/* see if there is a keyboard in the device tree
with a parent of type "adb" */
{
struct device_node *kbd;
for (kbd = find_devices("keyboard"); kbd; kbd = kbd->next) {
if (kbd->parent && kbd->parent->type
&& strcmp(kbd->parent->type, "adb") == 0) {
select_adb_keyboard();
break;
}
}
}
#endif /* CONFIG_VT && (CONFIG_ADB_KEYBOARD || CONFIG_INPUT) */
}
#if defined(CONFIG_BLK_DEV_IDE) || defined(CONFIG_BLK_DEV_IDE_MODULE)
/*
* IDE stuff.
*/
static int __chrp
chrp_ide_check_region(ide_ioreg_t from, unsigned int extent)
{
return check_region(from, extent);
}
static void __chrp
chrp_ide_request_region(ide_ioreg_t from,
unsigned int extent,
const char *name)
{
request_region(from, extent, name);
}
static void __chrp
chrp_ide_release_region(ide_ioreg_t from,
unsigned int extent)
{
release_region(from, extent);
}
static void __chrp
chrp_ide_init_hwif_ports(hw_regs_t *hw, ide_ioreg_t data_port, ide_ioreg_t ctrl_port, int *irq)
{
ide_ioreg_t reg = data_port;
int i;
for (i = IDE_DATA_OFFSET; i <= IDE_STATUS_OFFSET; i++) {
hw->io_ports[i] = reg;
reg += 1;
}
hw->io_ports[IDE_CONTROL_OFFSET] = ctrl_port;
}
#endif
/*
* One of the main thing these mappings are needed for is so that
* xmon can get to the serial port early on. We probably should
* handle the machines with the mpc106 as well as the python (F50)
* and the GG2 (longtrail). Actually we should look in the device
* tree and do the right thing.
*/
static void __init
chrp_map_io(void)
{
char *name;
/*
* The code below tends to get removed, please don't take it out.
* The F50 needs this mapping and it you take it out I'll track you
* down and slap your hands. If it causes problems please email me.
* -- Cort <cort@fsmlabs.com>
*/
name = get_property(find_path_device("/"), "name", NULL);
if (name && strncmp(name, "IBM-70", 6) == 0
&& strstr(name, "-F50")) {
io_block_mapping(0x80000000, 0x80000000, 0x10000000, _PAGE_IO);
io_block_mapping(0x90000000, 0x90000000, 0x10000000, _PAGE_IO);
return;
} else {
io_block_mapping(0xf8000000, 0xf8000000, 0x04000000, _PAGE_IO);
}
}
void __init
chrp_init(unsigned long r3, unsigned long r4, unsigned long r5,
unsigned long r6, unsigned long r7)
{
#ifdef CONFIG_BLK_DEV_INITRD
/* take care of initrd if we have one */
if ( r6 )
{
initrd_start = r6 + KERNELBASE;
initrd_end = r6 + r7 + KERNELBASE;
}
#endif /* CONFIG_BLK_DEV_INITRD */
ISA_DMA_THRESHOLD = ~0L;
DMA_MODE_READ = 0x44;
DMA_MODE_WRITE = 0x48;
isa_io_base = CHRP_ISA_IO_BASE; /* default value */
ppc_md.setup_arch = chrp_setup_arch;
ppc_md.show_percpuinfo = of_show_percpuinfo;
ppc_md.show_cpuinfo = chrp_show_cpuinfo;
ppc_md.irq_cannonicalize = chrp_irq_cannonicalize;
#ifndef CONFIG_POWER4
ppc_md.init_IRQ = chrp_init_IRQ;
ppc_md.get_irq = openpic_get_irq;
#else
ppc_md.init_IRQ = xics_init_IRQ;
ppc_md.get_irq = xics_get_irq;
#endif /* CONFIG_POWER4 */
ppc_md.init = chrp_init2;
ppc_md.restart = chrp_restart;
ppc_md.power_off = chrp_power_off;
ppc_md.halt = chrp_halt;
ppc_md.time_init = chrp_time_init;
ppc_md.set_rtc_time = chrp_set_rtc_time;
ppc_md.get_rtc_time = chrp_get_rtc_time;
ppc_md.calibrate_decr = chrp_calibrate_decr;
ppc_md.find_end_of_memory = pmac_find_end_of_memory;
ppc_md.setup_io_mappings = chrp_map_io;
#ifdef CONFIG_VT
/* these are adjusted in chrp_init2 if we have an ADB keyboard */
ppc_md.kbd_setkeycode = pckbd_setkeycode;
ppc_md.kbd_getkeycode = pckbd_getkeycode;
ppc_md.kbd_translate = pckbd_translate;
ppc_md.kbd_unexpected_up = pckbd_unexpected_up;
ppc_md.kbd_leds = pckbd_leds;
ppc_md.kbd_init_hw = pckbd_init_hw;
#ifdef CONFIG_MAGIC_SYSRQ
ppc_md.ppc_kbd_sysrq_xlate = pckbd_sysrq_xlate;
SYSRQ_KEY = 0x54;
#endif /* CONFIG_MAGIC_SYSRQ */
#endif /* CONFIG_VT */
if (rtas_data) {
struct device_node *rtas;
unsigned int *p;
rtas = find_devices("rtas");
if (rtas != NULL) {
if (get_property(rtas, "display-character", NULL)) {
ppc_md.progress = rtas_display_progress;
p = (unsigned int *) get_property
(rtas, "ibm,display-line-length", NULL);
if (p)
max_width = *p;
} else if (get_property(rtas, "set-indicator", NULL))
ppc_md.progress = rtas_indicator_progress;
}
}
#ifdef CONFIG_BOOTX_TEXT
if (ppc_md.progress == NULL && boot_text_mapped)
ppc_md.progress = btext_progress;
#endif
#ifdef CONFIG_SMP
#ifndef CONFIG_POWER4
ppc_md.smp_ops = &chrp_smp_ops;
#else
ppc_md.smp_ops = &xics_smp_ops;
#endif /* CONFIG_POWER4 */
#endif /* CONFIG_SMP */
#if defined(CONFIG_BLK_DEV_IDE) || defined(CONFIG_BLK_DEV_IDE_MODULE)
ppc_ide_md.ide_check_region = chrp_ide_check_region;
ppc_ide_md.ide_request_region = chrp_ide_request_region;
ppc_ide_md.ide_release_region = chrp_ide_release_region;
ppc_ide_md.ide_init_hwif = chrp_ide_init_hwif_ports;
#endif
/*
* Print the banner, then scroll down so boot progress
* can be printed. -- Cort
*/
if ( ppc_md.progress ) ppc_md.progress("Linux/PPC "UTS_RELEASE"\n", 0x0);
}
void __chrp
rtas_display_progress(char *s, unsigned short hex)
{
int width;
char *os = s;
if ( call_rtas( "display-character", 1, 1, NULL, '\r' ) )
return;
width = max_width;
while ( *os )
{
if ( (*os == '\n') || (*os == '\r') )
width = max_width;
else
width--;
call_rtas( "display-character", 1, 1, NULL, *os++ );
/* if we overwrite the screen length */
if ( width == 0 )
while ( (*os != 0) && (*os != '\n') && (*os != '\r') )
os++;
}
/*while ( width-- > 0 )*/
call_rtas( "display-character", 1, 1, NULL, ' ' );
}
void __chrp
rtas_indicator_progress(char *s, unsigned short hex)
{
call_rtas("set-indicator", 3, 1, NULL, 6, 0, hex);
}
#ifdef CONFIG_BOOTX_TEXT
void
btext_progress(char *s, unsigned short hex)
{
prom_print(s);
prom_print("\n");
}
#endif /* CONFIG_BOOTX_TEXT */
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