/*
* arch/mips/ddb5476/setup.c -- NEC DDB Vrc-5476 setup routines
*
* Copyright (C) 2000 Geert Uytterhoeven <geert@sonycom.com>
* Sony Software Development Center Europe (SDCE), Brussels
*/
#include <linux/init.h>
#include <linux/kbd_ll.h>
#include <linux/kernel.h>
#include <linux/kdev_t.h>
#include <linux/types.h>
#include <linux/sched.h>
#include <linux/pci.h>
#include <asm/addrspace.h>
#include <asm/bcache.h>
#include <asm/irq.h>
#include <asm/reboot.h>
#include <asm/gdb-stub.h>
#include <asm/time.h>
#include <asm/debug.h>
#include <asm/traps.h>
#include <asm/ddb5xxx/ddb5xxx.h>
// #define USE_CPU_COUNTER_TIMER /* whether we use cpu counter */
#ifdef USE_CPU_COUNTER_TIMER
#define CPU_COUNTER_FREQUENCY 83000000
#else
/* otherwise we use general purpose timer */
#define TIMER_FREQUENCY 83000000
#define TIMER_BASE DDB_T2CTRL
#define TIMER_IRQ (VRC5476_IRQ_BASE + VRC5476_IRQ_GPT)
#endif
static void (*back_to_prom) (void) = (void (*)(void)) 0xbfc00000;
static void ddb_machine_restart(char *command)
{
u32 t;
/* PCI cold reset */
t = ddb_in32(DDB_PCICTRL + 4);
t |= 0x40000000;
ddb_out32(DDB_PCICTRL + 4, t);
/* CPU cold reset */
t = ddb_in32(DDB_CPUSTAT);
t |= 1;
ddb_out32(DDB_CPUSTAT, t);
/* Call the PROM */
back_to_prom();
}
static void ddb_machine_halt(void)
{
printk(KERN_NOTICE "DDB Vrc-5476 halted.\n");
while (1);
}
static void ddb_machine_power_off(void)
{
printk(KERN_NOTICE "DDB Vrc-5476 halted. Please turn off the power.\n");
while (1);
}
extern void rtc_ds1386_init(unsigned long base);
static void __init ddb_time_init(void)
{
#if defined(USE_CPU_COUNTER_TIMER)
mips_hpt_frequency = CPU_COUNTER_FREQUENCY;
#endif
/* we have ds1396 RTC chip */
rtc_ds1386_init(KSEG1ADDR(DDB_PCI_MEM_BASE));
}
extern int setup_irq(unsigned int irq, struct irqaction *irqaction);
static void __init ddb_timer_setup(struct irqaction *irq)
{
#if defined(USE_CPU_COUNTER_TIMER)
unsigned int count;
/* we are using the cpu counter for timer interrupts */
setup_irq(CPU_IRQ_BASE + 7, irq);
/* to generate the first timer interrupt */
count = read_c0_count();
write_c0_compare(count + 1000);
#else
ddb_out32(TIMER_BASE, TIMER_FREQUENCY/HZ);
ddb_out32(TIMER_BASE+4, 0x1); /* enable timer */
setup_irq(TIMER_IRQ, irq);
#endif
}
static struct {
struct resource dma1;
struct resource timer;
struct resource rtc;
struct resource dma_page_reg;
struct resource dma2;
} ddb5476_ioport = {
{
"dma1", 0x00, 0x1f, IORESOURCE_BUSY}, {
"timer", 0x40, 0x5f, IORESOURCE_BUSY}, {
"rtc", 0x70, 0x7f, IORESOURCE_BUSY}, {
"dma page reg", 0x80, 0x8f, IORESOURCE_BUSY}, {
"dma2", 0xc0, 0xdf, IORESOURCE_BUSY}
};
static struct {
struct resource nile4;
} ddb5476_iomem = {
{ "Nile 4", DDB_BASE, DDB_BASE + DDB_SIZE - 1, IORESOURCE_BUSY}
};
static void ddb5476_board_init(void);
static void __init ddb5476_setup(void)
{
set_io_port_base(KSEG1ADDR(DDB_PCI_IO_BASE));
board_time_init = ddb_time_init;
board_timer_setup = ddb_timer_setup;
_machine_restart = ddb_machine_restart;
_machine_halt = ddb_machine_halt;
_machine_power_off = ddb_machine_power_off;
/* request io port/mem resources */
if (request_resource(&ioport_resource, &ddb5476_ioport.dma1) ||
request_resource(&ioport_resource, &ddb5476_ioport.timer) ||
request_resource(&ioport_resource, &ddb5476_ioport.rtc) ||
request_resource(&ioport_resource,
&ddb5476_ioport.dma_page_reg)
|| request_resource(&ioport_resource, &ddb5476_ioport.dma2)
|| request_resource(&iomem_resource, &ddb5476_iomem.nile4)) {
printk
("ddb_setup - requesting oo port resources failed.\n");
for (;;);
}
/* Reboot on panic */
panic_timeout = 180;
/* [jsun] we need to set BAR0 so that SDRAM 0 appears at 0x0 in PCI */
/* *(long*)0xbfa00218 = 0x8; */
/* board initialization stuff */
ddb5476_board_init();
}
early_initcall(ddb5476_setup);
/*
* We don't trust bios. We essentially does hardware re-initialization
* as complete as possible, as far as we know we can safely do.
*/
static void ddb5476_board_init(void)
{
/* ----------- setup PDARs ------------ */
/* check SDRAM0, whether we are on MEM bus does not matter */
db_assert((ddb_in32(DDB_SDRAM0) & 0xffffffef) ==
ddb_calc_pdar(DDB_SDRAM_BASE, DDB_SDRAM_SIZE, 32, 0, 1));
/* SDRAM1 should be turned off. What is this for anyway ? */
db_assert( (ddb_in32(DDB_SDRAM1) & 0xf) == 0);
/* flash 1&2, DDB status, DDB control */
ddb_set_pdar(DDB_DCS2, DDB_DCS2_BASE, DDB_DCS2_SIZE, 16, 0, 0);
ddb_set_pdar(DDB_DCS3, DDB_DCS3_BASE, DDB_DCS3_SIZE, 16, 0, 0);
ddb_set_pdar(DDB_DCS4, DDB_DCS4_BASE, DDB_DCS4_SIZE, 8, 0, 0);
ddb_set_pdar(DDB_DCS5, DDB_DCS5_BASE, DDB_DCS5_SIZE, 8, 0, 0);
/* shut off other pdar so they don't accidentally get into the way */
ddb_set_pdar(DDB_DCS6, 0xffffffff, 0, 32, 0, 0);
ddb_set_pdar(DDB_DCS7, 0xffffffff, 0, 32, 0, 0);
ddb_set_pdar(DDB_DCS8, 0xffffffff, 0, 32, 0, 0);
/* verify VRC5477 base addr */
/* don't care about some details */
db_assert((ddb_in32(DDB_INTCS) & 0xffffff0f) ==
ddb_calc_pdar(DDB_INTCS_BASE, DDB_INTCS_SIZE, 8, 0, 0));
/* verify BOOT ROM addr */
/* don't care about some details */
db_assert((ddb_in32(DDB_BOOTCS) & 0xffffff0f) ==
ddb_calc_pdar(DDB_BOOTCS_BASE, DDB_BOOTCS_SIZE, 8, 0, 0));
/* setup PCI windows - window1 for MEM/config, window0 for IO */
ddb_set_pdar(DDB_PCIW0, DDB_PCI_IO_BASE, DDB_PCI_IO_SIZE, 32, 0, 1);
ddb_set_pmr(DDB_PCIINIT0, DDB_PCICMD_IO, 0, DDB_PCI_ACCESS_32);
ddb_set_pdar(DDB_PCIW1, DDB_PCI_MEM_BASE, DDB_PCI_MEM_SIZE, 32, 0, 1);
ddb_set_pmr(DDB_PCIINIT1, DDB_PCICMD_MEM, DDB_PCI_MEM_BASE, DDB_PCI_ACCESS_32);
/* ----------- setup PDARs ------------ */
/* this is problematic - it will reset Aladin which cause we loose
* serial port, and we don't know how to set up Aladin chip again.
*/
// ddb_pci_reset_bus();
ddb_out32(DDB_BAR0, 0x00000008);
ddb_out32(DDB_BARC, 0xffffffff);
ddb_out32(DDB_BARB, 0xffffffff);
ddb_out32(DDB_BAR1, 0xffffffff);
ddb_out32(DDB_BAR2, 0xffffffff);
ddb_out32(DDB_BAR3, 0xffffffff);
ddb_out32(DDB_BAR4, 0xffffffff);
ddb_out32(DDB_BAR5, 0xffffffff);
ddb_out32(DDB_BAR6, 0xffffffff);
ddb_out32(DDB_BAR7, 0xffffffff);
ddb_out32(DDB_BAR8, 0xffffffff);
/* ----------- switch PCI1 to PCI CONFIG space ------------ */
ddb_set_pdar(DDB_PCIW1, DDB_PCI_CONFIG_BASE, DDB_PCI_CONFIG_SIZE, 32, 0, 1);
ddb_set_pmr(DDB_PCIINIT1, DDB_PCICMD_CFG, 0x0, DDB_PCI_ACCESS_32);
/* ----- M1543 PCI setup ------ */
/* we know M1543 PCI-ISA controller is at addr:18 */
/* xxxx1010 makes USB at addr:13 and PMU at addr:14 */
*(volatile unsigned char *) 0xa8040072 &= 0xf0;
*(volatile unsigned char *) 0xa8040072 |= 0xa;
/* setup USB interrupt to IRQ 9, (bit 0:3 - 0001)
* no IOCHRDY signal, (bit 7 - 1)
* M1543C & M7101 VID and Subsys Device ID are read-only (bit 6 - 1)
* Make USB Master INTAJ level to edge conversion (bit 4 - 1)
*/
*(unsigned char *) 0xa8040074 = 0xd1;
/* setup PMU(SCI to IRQ 10 (bit 0:3 - 0011)
* SCI routing to IRQ 13 disabled (bit 7 - 1)
* SCI interrupt level to edge conversion bypassed (bit 4 - 0)
*/
*(unsigned char *) 0xa8040076 = 0x83;
/* setup IDE controller
* enable IDE controller (bit 6 - 1)
* IDE IDSEL to be addr:24 (bit 4:5 - 11)
* no IDE ATA Secondary Bus Signal Pad Control (bit 3 - 0)
* no IDE ATA Primary Bus Signal Pad Control (bit 2 - 0)
* primary IRQ is 14, secondary is 15 (bit 1:0 - 01
*/
// *(unsigned char*)0xa8040058 = 0x71;
// *(unsigned char*)0xa8040058 = 0x79;
// *(unsigned char*)0xa8040058 = 0x74; // use SIRQ, primary tri-state
*(unsigned char *) 0xa8040058 = 0x75; // primary tri-state
#if 0
/* this is not necessary if M5229 does not use SIRQ */
*(unsigned char *) 0xa8040044 = 0x0d; // primary to IRQ 14
*(unsigned char *) 0xa8040075 = 0x0d; // secondary to IRQ 14
#endif
/* enable IDE in the M5229 config register 0x50 (bit 0 - 1) */
/* M5229 IDSEL is addr:24; see above setting */
*(unsigned char *) 0xa9000050 |= 0x1;
/* enable bus master (bit 2) and IO decoding (bit 0) */
*(unsigned char *) 0xa9000004 |= 0x5;
/* enable native, copied from arch/ppc/k2boot/head.S */
/* TODO - need volatile, need to be portable */
*(unsigned char *) 0xa9000009 = 0xff;
/* ----- end of M1543 PCI setup ------ */
/* ----- reset on-board ether chip ------ */
*((volatile u32 *) 0xa8020004) |= 1; /* decode I/O */
*((volatile u32 *) 0xa8020010) = 0; /* set BAR address */
/* send reset command */
*((volatile u32 *) 0xa6000000) = 1; /* do a soft reset */
/* disable ether chip */
*((volatile u32 *) 0xa8020004) = 0; /* disable any decoding */
/* put it into sleep */
*((volatile u32 *) 0xa8020040) = 0x80000000;
/* ----- end of reset on-board ether chip ------ */
/* ----------- switch PCI1 back to PCI MEM space ------------ */
ddb_set_pdar(DDB_PCIW1, DDB_PCI_MEM_BASE, DDB_PCI_MEM_SIZE, 32, 0, 1);
ddb_set_pmr(DDB_PCIINIT1, DDB_PCICMD_MEM, DDB_PCI_MEM_BASE, DDB_PCI_ACCESS_32);
}
