/*
* arch/ppc/platforms/spruce_setup.c
*
* Board setup routines for IBM Spruce
*
* Authors: Johnnie Peters <jpeters@mvista.com>
* Matt Porter <mporter@mvista.com>
*
* 2001-2002 (c) MontaVista, Software, Inc. This file is licensed under
* the terms of the GNU General Public License version 2. This program
* is licensed "as is" without any warranty of any kind, whether express
* or implied.
*/
#include <linux/config.h>
#include <linux/stddef.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/errno.h>
#include <linux/reboot.h>
#include <linux/pci.h>
#include <linux/kdev_t.h>
#include <linux/types.h>
#include <linux/major.h>
#include <linux/blk.h>
#include <linux/console.h>
#include <linux/delay.h>
#include <linux/seq_file.h>
#include <linux/ide.h>
#include <linux/serial.h>
#include <asm/keyboard.h>
#include <asm/system.h>
#include <asm/pgtable.h>
#include <asm/page.h>
#include <asm/dma.h>
#include <asm/io.h>
#include <asm/machdep.h>
#include <asm/time.h>
#include <platforms/spruce.h>
#include <asm/todc.h>
#include <asm/bootinfo.h>
#include "cpc700.h"
extern void spruce_init_IRQ(void);
extern int spruce_get_irq(struct pt_regs *);
extern void spruce_setup_hose(void);
extern int pckbd_setkeycode(unsigned int, unsigned int);
extern int pckbd_getkeycode(unsigned int);
extern int pckbd_translate(unsigned char, unsigned char *, char);
extern char pckbd_unexpected_up(unsigned char);
extern void pckbd_leds(unsigned char);
extern void pckbd_init_hw(void);
extern unsigned char pckbd_sysrq_xlate[128];
extern char cmd_line[];
extern void gen550_progress(char *, unsigned short);
extern void gen550_init(int, struct serial_struct *);
/*
* CPC700 PIC interrupt programming table
*
* First entry is the sensitivity (level/edge), second is the polarity.
*/
unsigned int cpc700_irq_assigns[32][2] = {
{ 1, 1 }, /* IRQ 0: ECC Correctable Error - rising edge */
{ 1, 1 }, /* IRQ 1: PCI Write Mem Range - rising edge */
{ 0, 1 }, /* IRQ 2: PCI Write Command Reg - active high */
{ 0, 1 }, /* IRQ 3: UART 0 - active high */
{ 0, 1 }, /* IRQ 4: UART 1 - active high */
{ 0, 1 }, /* IRQ 5: ICC 0 - active high */
{ 0, 1 }, /* IRQ 6: ICC 1 - active high */
{ 0, 1 }, /* IRQ 7: GPT Compare 0 - active high */
{ 0, 1 }, /* IRQ 8: GPT Compare 1 - active high */
{ 0, 1 }, /* IRQ 9: GPT Compare 2 - active high */
{ 0, 1 }, /* IRQ 10: GPT Compare 3 - active high */
{ 0, 1 }, /* IRQ 11: GPT Compare 4 - active high */
{ 0, 1 }, /* IRQ 12: GPT Capture 0 - active high */
{ 0, 1 }, /* IRQ 13: GPT Capture 1 - active high */
{ 0, 1 }, /* IRQ 14: GPT Capture 2 - active high */
{ 0, 1 }, /* IRQ 15: GPT Capture 3 - active high */
{ 0, 1 }, /* IRQ 16: GPT Capture 4 - active high */
{ 0, 0 }, /* IRQ 17: Reserved */
{ 0, 0 }, /* IRQ 18: Reserved */
{ 0, 0 }, /* IRQ 19: Reserved */
{ 0, 1 }, /* IRQ 20: FPGA EXT_IRQ0 - active high */
{ 1, 1 }, /* IRQ 21: Mouse - rising edge */
{ 1, 1 }, /* IRQ 22: Keyboard - rising edge */
{ 0, 0 }, /* IRQ 23: PCI Slot 3 - active low */
{ 0, 0 }, /* IRQ 24: PCI Slot 2 - active low */
{ 0, 0 }, /* IRQ 25: PCI Slot 1 - active low */
{ 0, 0 }, /* IRQ 26: PCI Slot 0 - active low */
};
static void __init
spruce_calibrate_decr(void)
{
int freq, divisor = 4;
/* determine processor bus speed */
freq = SPRUCE_BUS_SPEED;
tb_ticks_per_jiffy = freq / HZ / divisor;
tb_to_us = mulhwu_scale_factor(freq/divisor, 1000000);
}
static int
spruce_show_cpuinfo(struct seq_file *m)
{
seq_printf(m, "vendor\t\t: IBM\n");
seq_printf(m, "machine\t\t: Spruce\n");
return 0;
}
#ifdef CONFIG_SERIAL
static void __init
spruce_early_serial_map(void)
{
u32 baud_base;
struct serial_struct serial_req;
if (SPRUCE_UARTCLK_IS_33M(readb(SPRUCE_FPGA_REG_A)))
baud_base = SPRUCE_BAUD_33M;
else
baud_base = SPRUCE_BAUD_30M;
/* Setup serial port access */
memset(&serial_req, 0, sizeof(serial_req));
serial_req.baud_base = baud_base;
serial_req.line = 0;
serial_req.port = 0;
serial_req.irq = 3;
serial_req.flags = ASYNC_BOOT_AUTOCONF;
serial_req.io_type = SERIAL_IO_MEM;
serial_req.iomem_base = (u_char *)UART0_IO_BASE;
serial_req.iomem_reg_shift = 0;
#if defined(CONFIG_SERIAL_TEXT_DEBUG) || defined(CONFIG_KGDB)
gen550_init(0, &serial_req);
#endif
if (early_serial_setup(&serial_req) != 0)
printk("Early serial init of port 0 failed\n");
/* Assume early_serial_setup() doesn't modify serial_req */
serial_req.line = 1;
serial_req.port = 1;
serial_req.irq = 4;
serial_req.iomem_base = (u_char *)UART1_IO_BASE;
#if defined(CONFIG_SERIAL_TEXT_DEBUG) || defined(CONFIG_KGDB)
gen550_init(1, &serial_req);
#endif
if (early_serial_setup(&serial_req) != 0)
printk("Early serial init of port 1 failed\n");
}
#endif
TODC_ALLOC();
static void __init
spruce_setup_arch(void)
{
/* Setup TODC access */
TODC_INIT(TODC_TYPE_DS1643, 0, 0, SPRUCE_RTC_BASE_ADDR, 8);
/* init to some ~sane value until calibrate_delay() runs */
loops_per_jiffy = 50000000 / HZ;
/* Setup PCI host bridge */
spruce_setup_hose();
#ifdef CONFIG_BLK_DEV_INITRD
if (initrd_start)
ROOT_DEV = MKDEV(RAMDISK_MAJOR, 0); /* /dev/ram */
else
#endif
#ifdef CONFIG_ROOT_NFS
ROOT_DEV = to_kdev_t(0x00FF); /* /dev/nfs pseudo device */
#else
ROOT_DEV = to_kdev_t(0x0801); /* /dev/sda1 */
#endif
#ifdef CONFIG_DUMMY_CONSOLE
conswitchp = &dummy_con;
#endif
#ifdef CONFIG_SERIAL
spruce_early_serial_map();
#endif
/* Identify the system */
printk("System Identification: IBM Spruce\n");
printk("IBM Spruce port (C) 2001 MontaVista Software, Inc. (source@mvista.com)\n");
}
static void
spruce_restart(char *cmd)
{
__cli();
/* SRR0 has system reset vector, SRR1 has default MSR value */
/* rfi restores MSR from SRR1 and sets the PC to the SRR0 value */
asm volatile(" lis 3,0xfff0 \n\
ori 3,3,0x0100 \n\
mtspr 26,3 \n\
li 3,0 \n\
mtspr 27,3 \n\
rfi");
for(;;);
}
static void
spruce_power_off(void)
{
for(;;);
}
static void
spruce_halt(void)
{
spruce_restart(NULL);
}
static unsigned long __init
spruce_find_end_of_memory(void)
{
return boot_mem_size;
}
static void __init
spruce_map_io(void)
{
io_block_mapping(SPRUCE_PCI_IO_BASE, SPRUCE_PCI_PHY_IO_BASE,
0x08000000, _PAGE_IO);
}
unsigned char spruce_read_keyb_status(void)
{
unsigned long kbd_status;
__raw_writel(0x00000088, 0xff500008);
eieio();
__raw_writel(0x03000000, 0xff50000c);
eieio();
asm volatile(" lis 7,0xff88 \n\
ori 7,7,0x8 \n\
lswi 6,7,0x8 \n\
mr %0,6"
: "=r" (kbd_status) :: "6", "7");
__raw_writel(0x00000000, 0xff50000c);
eieio();
return (unsigned char)(kbd_status >> 24);
}
unsigned char spruce_read_keyb_data(void)
{
unsigned long kbd_data;
__raw_writel(0x00000088, 0xff500008);
eieio();
__raw_writel(0x03000000, 0xff50000c);
eieio();
asm volatile(" lis 7,0xff88 \n\
lswi 6,7,0x8 \n\
mr %0,6"
: "=r" (kbd_data) :: "6", "7");
__raw_writel(0x00000000, 0xff50000c);
eieio();
return (unsigned char)(kbd_data >> 24);
}
#if defined(CONFIG_SERIAL_TEXT_DEBUG) || defined(CONFIG_KGDB)
/*
* Set BAT 3 to map 0xf8000000 to end of physical memory space 1-to-1.
*/
static __inline__ void
spruce_set_bat(void)
{
unsigned long bat3u, bat3l;
asm volatile(" lis %0,0xf800 \n\
ori %1,%0,0x002a \n\
ori %0,%0,0x0ffe \n\
mtspr 0x21e,%0 \n\
mtspr 0x21f,%1 \n\
isync \n\
sync "
: "=r" (bat3u), "=r" (bat3l));
}
#endif
void __init
platform_init(unsigned long r3, unsigned long r4, unsigned long r5,
unsigned long r6, unsigned long r7)
{
parse_bootinfo(find_bootinfo());
isa_io_base = SPRUCE_ISA_IO_BASE;
pci_dram_offset = SPRUCE_PCI_SYS_MEM_BASE;
ppc_md.setup_arch = spruce_setup_arch;
ppc_md.show_cpuinfo = spruce_show_cpuinfo;
ppc_md.init_IRQ = cpc700_init_IRQ;
ppc_md.get_irq = cpc700_get_irq;
ppc_md.find_end_of_memory = spruce_find_end_of_memory;
ppc_md.setup_io_mappings = spruce_map_io;
ppc_md.restart = spruce_restart;
ppc_md.power_off = spruce_power_off;
ppc_md.halt = spruce_halt;
ppc_md.time_init = todc_time_init;
ppc_md.set_rtc_time = todc_set_rtc_time;
ppc_md.get_rtc_time = todc_get_rtc_time;
ppc_md.calibrate_decr = spruce_calibrate_decr;
ppc_md.nvram_read_val = todc_direct_read_val;
ppc_md.nvram_write_val = todc_direct_write_val;
#if defined(CONFIG_SERIAL) && (defined(CONFIG_SERIAL_TEXT_DEBUG) \
|| defined(CONFIG_KGDB))
spruce_set_bat();
spruce_early_serial_map();
#ifdef CONFIG_SERIAL_TEXT_DEBUG
ppc_md.progress = gen550_progress;
#endif /* CONFIG_SERIAL_TEXT_DEBUG */
ppc_md.early_serial_map = spruce_early_serial_map;
#endif
#ifdef CONFIG_VT
/* Spruce has a PS2 style 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
#endif
}
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