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linux/arch/mips/txx9/rbtx4938/setup.c

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/*
* Setup pointers to hardware-dependent routines.
* Copyright (C) 2000-2001 Toshiba Corporation
*
* 2003-2005 (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.
*
* Support for TX4938 in 2.6 - Manish Lachwani (mlachwani@mvista.com)
*/
#include <linux/init.h>
#include <linux/types.h>
#include <linux/ioport.h>
#include <linux/delay.h>
#include <linux/interrupt.h>
#include <linux/console.h>
#include <linux/pci.h>
#include <linux/pm.h>
#include <linux/platform_device.h>
#include <linux/clk.h>
#include <linux/gpio.h>
#include <asm/reboot.h>
#include <asm/time.h>
#include <asm/txx9tmr.h>
#include <asm/io.h>
#include <asm/bootinfo.h>
#include <asm/txx9/rbtx4938.h>
#ifdef CONFIG_SERIAL_TXX9
#include <linux/serial_core.h>
#endif
#include <linux/spi/spi.h>
#include <asm/txx9/spi.h>
#include <asm/txx9pio.h>
extern char * __init prom_getcmdline(void);
static inline void tx4938_report_pcic_status1(struct tx4938_pcic_reg *pcicptr);
/* These functions are used for rebooting or halting the machine*/
extern void rbtx4938_machine_restart(char *command);
extern void rbtx4938_machine_halt(void);
extern void rbtx4938_machine_power_off(void);
/* clocks */
unsigned int txx9_master_clock;
unsigned int txx9_cpu_clock;
unsigned int txx9_gbus_clock;
unsigned long rbtx4938_ce_base[8];
unsigned long rbtx4938_ce_size[8];
int txboard_pci66_mode;
static int tx4938_pcic_trdyto; /* default: disabled */
static int tx4938_pcic_retryto; /* default: disabled */
static int tx4938_ccfg_toeon = 1;
struct tx4938_pcic_reg *pcicptrs[4] = {
tx4938_pcicptr /* default setting for TX4938 */
};
static struct {
unsigned long base;
unsigned long size;
} phys_regions[16] __initdata;
static int num_phys_regions __initdata;
#define PHYS_REGION_MINSIZE 0x10000
void rbtx4938_machine_halt(void)
{
printk(KERN_NOTICE "System Halted\n");
local_irq_disable();
while (1)
__asm__(".set\tmips3\n\t"
"wait\n\t"
".set\tmips0");
}
void rbtx4938_machine_power_off(void)
{
rbtx4938_machine_halt();
/* no return */
}
void rbtx4938_machine_restart(char *command)
{
local_irq_disable();
printk("Rebooting...");
writeb(1, rbtx4938_softresetlock_addr);
writeb(1, rbtx4938_sfvol_addr);
writeb(1, rbtx4938_softreset_addr);
while(1)
;
}
void __init
txboard_add_phys_region(unsigned long base, unsigned long size)
{
if (num_phys_regions >= ARRAY_SIZE(phys_regions)) {
printk("phys_region overflow\n");
return;
}
phys_regions[num_phys_regions].base = base;
phys_regions[num_phys_regions].size = size;
num_phys_regions++;
}
unsigned long __init
txboard_find_free_phys_region(unsigned long begin, unsigned long end,
unsigned long size)
{
unsigned long base;
int i;
for (base = begin / size * size; base < end; base += size) {
for (i = 0; i < num_phys_regions; i++) {
if (phys_regions[i].size &&
base <= phys_regions[i].base + (phys_regions[i].size - 1) &&
base + (size - 1) >= phys_regions[i].base)
break;
}
if (i == num_phys_regions)
return base;
}
return 0;
}
unsigned long __init
txboard_find_free_phys_region_shrink(unsigned long begin, unsigned long end,
unsigned long *size)
{
unsigned long sz, base;
for (sz = *size; sz >= PHYS_REGION_MINSIZE; sz /= 2) {
base = txboard_find_free_phys_region(begin, end, sz);
if (base) {
*size = sz;
return base;
}
}
return 0;
}
unsigned long __init
txboard_request_phys_region_range(unsigned long begin, unsigned long end,
unsigned long size)
{
unsigned long base;
base = txboard_find_free_phys_region(begin, end, size);
if (base)
txboard_add_phys_region(base, size);
return base;
}
unsigned long __init
txboard_request_phys_region(unsigned long size)
{
unsigned long base;
unsigned long begin = 0, end = 0x20000000; /* search low 512MB */
base = txboard_find_free_phys_region(begin, end, size);
if (base)
txboard_add_phys_region(base, size);
return base;
}
unsigned long __init
txboard_request_phys_region_shrink(unsigned long *size)
{
unsigned long base;
unsigned long begin = 0, end = 0x20000000; /* search low 512MB */
base = txboard_find_free_phys_region_shrink(begin, end, size);
if (base)
txboard_add_phys_region(base, *size);
return base;
}
#ifdef CONFIG_PCI
void __init
tx4938_pcic_setup(struct tx4938_pcic_reg *pcicptr,
struct pci_controller *channel,
unsigned long pci_io_base,
int extarb)
{
int i;
/* Disable All Initiator Space */
pcicptr->pciccfg &= ~(TX4938_PCIC_PCICCFG_G2PMEN(0)|
TX4938_PCIC_PCICCFG_G2PMEN(1)|
TX4938_PCIC_PCICCFG_G2PMEN(2)|
TX4938_PCIC_PCICCFG_G2PIOEN);
/* GB->PCI mappings */
pcicptr->g2piomask = (channel->io_resource->end - channel->io_resource->start) >> 4;
pcicptr->g2piogbase = pci_io_base |
#ifdef __BIG_ENDIAN
TX4938_PCIC_G2PIOGBASE_ECHG
#else
TX4938_PCIC_G2PIOGBASE_BSDIS
#endif
;
pcicptr->g2piopbase = 0;
for (i = 0; i < 3; i++) {
pcicptr->g2pmmask[i] = 0;
pcicptr->g2pmgbase[i] = 0;
pcicptr->g2pmpbase[i] = 0;
}
if (channel->mem_resource->end) {
pcicptr->g2pmmask[0] = (channel->mem_resource->end - channel->mem_resource->start) >> 4;
pcicptr->g2pmgbase[0] = channel->mem_resource->start |
#ifdef __BIG_ENDIAN
TX4938_PCIC_G2PMnGBASE_ECHG
#else
TX4938_PCIC_G2PMnGBASE_BSDIS
#endif
;
pcicptr->g2pmpbase[0] = channel->mem_resource->start;
}
/* PCI->GB mappings (I/O 256B) */
pcicptr->p2giopbase = 0; /* 256B */
pcicptr->p2giogbase = 0;
/* PCI->GB mappings (MEM 512MB (64MB on R1.x)) */
pcicptr->p2gm0plbase = 0;
pcicptr->p2gm0pubase = 0;
pcicptr->p2gmgbase[0] = 0 |
TX4938_PCIC_P2GMnGBASE_TMEMEN |
#ifdef __BIG_ENDIAN
TX4938_PCIC_P2GMnGBASE_TECHG
#else
TX4938_PCIC_P2GMnGBASE_TBSDIS
#endif
;
/* PCI->GB mappings (MEM 16MB) */
pcicptr->p2gm1plbase = 0xffffffff;
pcicptr->p2gm1pubase = 0xffffffff;
pcicptr->p2gmgbase[1] = 0;
/* PCI->GB mappings (MEM 1MB) */
pcicptr->p2gm2pbase = 0xffffffff; /* 1MB */
pcicptr->p2gmgbase[2] = 0;
pcicptr->pciccfg &= TX4938_PCIC_PCICCFG_GBWC_MASK;
/* Enable Initiator Memory Space */
if (channel->mem_resource->end)
pcicptr->pciccfg |= TX4938_PCIC_PCICCFG_G2PMEN(0);
/* Enable Initiator I/O Space */
if (channel->io_resource->end)
pcicptr->pciccfg |= TX4938_PCIC_PCICCFG_G2PIOEN;
/* Enable Initiator Config */
pcicptr->pciccfg |=
TX4938_PCIC_PCICCFG_ICAEN |
TX4938_PCIC_PCICCFG_TCAR;
/* Do not use MEMMUL, MEMINF: YMFPCI card causes M_ABORT. */
pcicptr->pcicfg1 = 0;
pcicptr->g2ptocnt &= ~0xffff;
if (tx4938_pcic_trdyto >= 0) {
pcicptr->g2ptocnt &= ~0xff;
pcicptr->g2ptocnt |= (tx4938_pcic_trdyto & 0xff);
}
if (tx4938_pcic_retryto >= 0) {
pcicptr->g2ptocnt &= ~0xff00;
pcicptr->g2ptocnt |= ((tx4938_pcic_retryto<<8) & 0xff00);
}
/* Clear All Local Bus Status */
pcicptr->pcicstatus = TX4938_PCIC_PCICSTATUS_ALL;
/* Enable All Local Bus Interrupts */
pcicptr->pcicmask = TX4938_PCIC_PCICSTATUS_ALL;
/* Clear All Initiator Status */
pcicptr->g2pstatus = TX4938_PCIC_G2PSTATUS_ALL;
/* Enable All Initiator Interrupts */
pcicptr->g2pmask = TX4938_PCIC_G2PSTATUS_ALL;
/* Clear All PCI Status Error */
pcicptr->pcistatus =
(pcicptr->pcistatus & 0x0000ffff) |
(TX4938_PCIC_PCISTATUS_ALL << 16);
/* Enable All PCI Status Error Interrupts */
pcicptr->pcimask = TX4938_PCIC_PCISTATUS_ALL;
if (!extarb) {
/* Reset Bus Arbiter */
pcicptr->pbacfg = TX4938_PCIC_PBACFG_RPBA;
pcicptr->pbabm = 0;
/* Enable Bus Arbiter */
pcicptr->pbacfg = TX4938_PCIC_PBACFG_PBAEN;
}
/* PCIC Int => IRC IRQ16 */
pcicptr->pcicfg2 =
(pcicptr->pcicfg2 & 0xffffff00) | TX4938_IR_PCIC;
pcicptr->pcistatus = PCI_COMMAND_MASTER |
PCI_COMMAND_MEMORY |
PCI_COMMAND_PARITY | PCI_COMMAND_SERR;
}
int __init
tx4938_report_pciclk(void)
{
unsigned long pcode = TX4938_REV_PCODE();
int pciclk = 0;
printk("TX%lx PCIC --%s PCICLK:",
pcode,
(tx4938_ccfgptr->ccfg & TX4938_CCFG_PCI66) ? " PCI66" : "");
if (tx4938_ccfgptr->pcfg & TX4938_PCFG_PCICLKEN_ALL) {
switch ((unsigned long)tx4938_ccfgptr->ccfg & TX4938_CCFG_PCIDIVMODE_MASK) {
case TX4938_CCFG_PCIDIVMODE_4:
pciclk = txx9_cpu_clock / 4; break;
case TX4938_CCFG_PCIDIVMODE_4_5:
pciclk = txx9_cpu_clock * 2 / 9; break;
case TX4938_CCFG_PCIDIVMODE_5:
pciclk = txx9_cpu_clock / 5; break;
case TX4938_CCFG_PCIDIVMODE_5_5:
pciclk = txx9_cpu_clock * 2 / 11; break;
case TX4938_CCFG_PCIDIVMODE_8:
pciclk = txx9_cpu_clock / 8; break;
case TX4938_CCFG_PCIDIVMODE_9:
pciclk = txx9_cpu_clock / 9; break;
case TX4938_CCFG_PCIDIVMODE_10:
pciclk = txx9_cpu_clock / 10; break;
case TX4938_CCFG_PCIDIVMODE_11:
pciclk = txx9_cpu_clock / 11; break;
}
printk("Internal(%dMHz)", pciclk / 1000000);
} else {
printk("External");
pciclk = -1;
}
printk("\n");
return pciclk;
}
void __init set_tx4938_pcicptr(int ch, struct tx4938_pcic_reg *pcicptr)
{
pcicptrs[ch] = pcicptr;
}
struct tx4938_pcic_reg *get_tx4938_pcicptr(int ch)
{
return pcicptrs[ch];
}
static struct pci_dev *fake_pci_dev(struct pci_controller *hose,
int top_bus, int busnr, int devfn)
{
static struct pci_dev dev;
static struct pci_bus bus;
dev.sysdata = bus.sysdata = hose;
dev.devfn = devfn;
bus.number = busnr;
bus.ops = hose->pci_ops;
bus.parent = NULL;
dev.bus = &bus;
return &dev;
}
#define EARLY_PCI_OP(rw, size, type) \
static int early_##rw##_config_##size(struct pci_controller *hose, \
int top_bus, int bus, int devfn, int offset, type value) \
{ \
return pci_##rw##_config_##size( \
fake_pci_dev(hose, top_bus, bus, devfn), \
offset, value); \
}
EARLY_PCI_OP(read, word, u16 *)
int txboard_pci66_check(struct pci_controller *hose, int top_bus, int current_bus)
{
u32 pci_devfn;
unsigned short vid;
int devfn_start = 0;
int devfn_stop = 0xff;
int cap66 = -1;
u16 stat;
printk("PCI: Checking 66MHz capabilities...\n");
for (pci_devfn=devfn_start; pci_devfn<devfn_stop; pci_devfn++) {
if (early_read_config_word(hose, top_bus, current_bus,
pci_devfn, PCI_VENDOR_ID,
&vid) != PCIBIOS_SUCCESSFUL)
continue;
if (vid == 0xffff) continue;
/* check 66MHz capability */
if (cap66 < 0)
cap66 = 1;
if (cap66) {
early_read_config_word(hose, top_bus, current_bus, pci_devfn,
PCI_STATUS, &stat);
if (!(stat & PCI_STATUS_66MHZ)) {
printk(KERN_DEBUG "PCI: %02x:%02x not 66MHz capable.\n",
current_bus, pci_devfn);
cap66 = 0;
break;
}
}
}
return cap66 > 0;
}
int __init
tx4938_pciclk66_setup(void)
{
int pciclk;
/* Assert M66EN */
tx4938_ccfgptr->ccfg |= TX4938_CCFG_PCI66;
/* Double PCICLK (if possible) */
if (tx4938_ccfgptr->pcfg & TX4938_PCFG_PCICLKEN_ALL) {
unsigned int pcidivmode =
tx4938_ccfgptr->ccfg & TX4938_CCFG_PCIDIVMODE_MASK;
switch (pcidivmode) {
case TX4938_CCFG_PCIDIVMODE_8:
case TX4938_CCFG_PCIDIVMODE_4:
pcidivmode = TX4938_CCFG_PCIDIVMODE_4;
pciclk = txx9_cpu_clock / 4;
break;
case TX4938_CCFG_PCIDIVMODE_9:
case TX4938_CCFG_PCIDIVMODE_4_5:
pcidivmode = TX4938_CCFG_PCIDIVMODE_4_5;
pciclk = txx9_cpu_clock * 2 / 9;
break;
case TX4938_CCFG_PCIDIVMODE_10:
case TX4938_CCFG_PCIDIVMODE_5:
pcidivmode = TX4938_CCFG_PCIDIVMODE_5;
pciclk = txx9_cpu_clock / 5;
break;
case TX4938_CCFG_PCIDIVMODE_11:
case TX4938_CCFG_PCIDIVMODE_5_5:
default:
pcidivmode = TX4938_CCFG_PCIDIVMODE_5_5;
pciclk = txx9_cpu_clock * 2 / 11;
break;
}
tx4938_ccfgptr->ccfg =
(tx4938_ccfgptr->ccfg & ~TX4938_CCFG_PCIDIVMODE_MASK)
| pcidivmode;
printk(KERN_DEBUG "PCICLK: ccfg:%08lx\n",
(unsigned long)tx4938_ccfgptr->ccfg);
} else {
pciclk = -1;
}
return pciclk;
}
extern struct pci_controller tx4938_pci_controller[];
static int __init tx4938_pcibios_init(void)
{
unsigned long mem_base[2];
unsigned long mem_size[2] = {TX4938_PCIMEM_SIZE_0, TX4938_PCIMEM_SIZE_1}; /* MAX 128M,64K */
unsigned long io_base[2];
unsigned long io_size[2] = {TX4938_PCIIO_SIZE_0, TX4938_PCIIO_SIZE_1}; /* MAX 16M,64K */
/* TX4938 PCIC1: 64K MEM/IO is enough for ETH0,ETH1 */
int extarb = !(tx4938_ccfgptr->ccfg & TX4938_CCFG_PCIXARB);
PCIBIOS_MIN_IO = 0x00001000UL;
mem_base[0] = txboard_request_phys_region_shrink(&mem_size[0]);
io_base[0] = txboard_request_phys_region_shrink(&io_size[0]);
printk("TX4938 PCIC -- DID:%04x VID:%04x RID:%02x Arbiter:%s\n",
(unsigned short)(tx4938_pcicptr->pciid >> 16),
(unsigned short)(tx4938_pcicptr->pciid & 0xffff),
(unsigned short)(tx4938_pcicptr->pciccrev & 0xff),
extarb ? "External" : "Internal");
/* setup PCI area */
tx4938_pci_controller[0].io_resource->start = io_base[0];
tx4938_pci_controller[0].io_resource->end = (io_base[0] + io_size[0]) - 1;
tx4938_pci_controller[0].mem_resource->start = mem_base[0];
tx4938_pci_controller[0].mem_resource->end = mem_base[0] + mem_size[0] - 1;
set_tx4938_pcicptr(0, tx4938_pcicptr);
register_pci_controller(&tx4938_pci_controller[0]);
if (tx4938_ccfgptr->ccfg & TX4938_CCFG_PCI66) {
printk("TX4938_CCFG_PCI66 already configured\n");
txboard_pci66_mode = -1; /* already configured */
}
/* Reset PCI Bus */
writeb(0, rbtx4938_pcireset_addr);
/* Reset PCIC */
tx4938_ccfgptr->clkctr |= TX4938_CLKCTR_PCIRST;
if (txboard_pci66_mode > 0)
tx4938_pciclk66_setup();
mdelay(10);
/* clear PCIC reset */
tx4938_ccfgptr->clkctr &= ~TX4938_CLKCTR_PCIRST;
writeb(1, rbtx4938_pcireset_addr);
mmiowb();
tx4938_report_pcic_status1(tx4938_pcicptr);
tx4938_report_pciclk();
tx4938_pcic_setup(tx4938_pcicptr, &tx4938_pci_controller[0], io_base[0], extarb);
if (txboard_pci66_mode == 0 &&
txboard_pci66_check(&tx4938_pci_controller[0], 0, 0)) {
/* Reset PCI Bus */
writeb(0, rbtx4938_pcireset_addr);
/* Reset PCIC */
tx4938_ccfgptr->clkctr |= TX4938_CLKCTR_PCIRST;
tx4938_pciclk66_setup();
mdelay(10);
/* clear PCIC reset */
tx4938_ccfgptr->clkctr &= ~TX4938_CLKCTR_PCIRST;
writeb(1, rbtx4938_pcireset_addr);
mmiowb();
/* Reinitialize PCIC */
tx4938_report_pciclk();
tx4938_pcic_setup(tx4938_pcicptr, &tx4938_pci_controller[0], io_base[0], extarb);
}
mem_base[1] = txboard_request_phys_region_shrink(&mem_size[1]);
io_base[1] = txboard_request_phys_region_shrink(&io_size[1]);
/* Reset PCIC1 */
tx4938_ccfgptr->clkctr |= TX4938_CLKCTR_PCIC1RST;
/* PCI1DMD==0 => PCI1CLK==GBUSCLK/2 => PCI66 */
if (!(tx4938_ccfgptr->ccfg & TX4938_CCFG_PCI1DMD))
tx4938_ccfgptr->ccfg |= TX4938_CCFG_PCI1_66;
else
tx4938_ccfgptr->ccfg &= ~TX4938_CCFG_PCI1_66;
mdelay(10);
/* clear PCIC1 reset */
tx4938_ccfgptr->clkctr &= ~TX4938_CLKCTR_PCIC1RST;
tx4938_report_pcic_status1(tx4938_pcic1ptr);
printk("TX4938 PCIC1 -- DID:%04x VID:%04x RID:%02x",
(unsigned short)(tx4938_pcic1ptr->pciid >> 16),
(unsigned short)(tx4938_pcic1ptr->pciid & 0xffff),
(unsigned short)(tx4938_pcic1ptr->pciccrev & 0xff));
printk("%s PCICLK:%dMHz\n",
(tx4938_ccfgptr->ccfg & TX4938_CCFG_PCI1_66) ? " PCI66" : "",
txx9_gbus_clock /
((tx4938_ccfgptr->ccfg & TX4938_CCFG_PCI1DMD) ? 4 : 2) /
1000000);
/* assumption: CPHYSADDR(mips_io_port_base) == io_base[0] */
tx4938_pci_controller[1].io_resource->start =
io_base[1] - io_base[0];
tx4938_pci_controller[1].io_resource->end =
io_base[1] - io_base[0] + io_size[1] - 1;
tx4938_pci_controller[1].mem_resource->start = mem_base[1];
tx4938_pci_controller[1].mem_resource->end =
mem_base[1] + mem_size[1] - 1;
set_tx4938_pcicptr(1, tx4938_pcic1ptr);
register_pci_controller(&tx4938_pci_controller[1]);
tx4938_pcic_setup(tx4938_pcic1ptr, &tx4938_pci_controller[1], io_base[1], extarb);
/* map ioport 0 to PCI I/O space address 0 */
set_io_port_base(KSEG1 + io_base[0]);
return 0;
}
arch_initcall(tx4938_pcibios_init);
#endif /* CONFIG_PCI */
/* SPI support */
/* chip select for SPI devices */
#define SEEPROM1_CS 7 /* PIO7 */
#define SEEPROM2_CS 0 /* IOC */
#define SEEPROM3_CS 1 /* IOC */
#define SRTC_CS 2 /* IOC */
#ifdef CONFIG_PCI
static int __init rbtx4938_ethaddr_init(void)
{
unsigned char dat[17];
unsigned char sum;
int i;
/* 0-3: "MAC\0", 4-9:eth0, 10-15:eth1, 16:sum */
if (spi_eeprom_read(SEEPROM1_CS, 0, dat, sizeof(dat))) {
printk(KERN_ERR "seeprom: read error.\n");
return -ENODEV;
} else {
if (strcmp(dat, "MAC") != 0)
printk(KERN_WARNING "seeprom: bad signature.\n");
for (i = 0, sum = 0; i < sizeof(dat); i++)
sum += dat[i];
if (sum)
printk(KERN_WARNING "seeprom: bad checksum.\n");
}
for (i = 0; i < 2; i++) {
unsigned int id =
TXX9_IRQ_BASE + (i ? TX4938_IR_ETH1 : TX4938_IR_ETH0);
struct platform_device *pdev;
if (!(tx4938_ccfgptr->pcfg &
(i ? TX4938_PCFG_ETH1_SEL : TX4938_PCFG_ETH0_SEL)))
continue;
pdev = platform_device_alloc("tc35815-mac", id);
if (!pdev ||
platform_device_add_data(pdev, &dat[4 + 6 * i], 6) ||
platform_device_add(pdev))
platform_device_put(pdev);
}
return 0;
}
device_initcall(rbtx4938_ethaddr_init);
#endif /* CONFIG_PCI */
static void __init rbtx4938_spi_setup(void)
{
/* set SPI_SEL */
tx4938_ccfgptr->pcfg |= TX4938_PCFG_SPI_SEL;
}
static struct resource rbtx4938_fpga_resource;
static char pcode_str[8];
static struct resource tx4938_reg_resource = {
.start = TX4938_REG_BASE,
.end = TX4938_REG_BASE + TX4938_REG_SIZE,
.name = pcode_str,
.flags = IORESOURCE_MEM
};
void __init tx4938_board_setup(void)
{
int i;
unsigned long divmode;
int cpuclk = 0;
unsigned long pcode = TX4938_REV_PCODE();
ioport_resource.start = 0x1000;
ioport_resource.end = 0xffffffff;
iomem_resource.start = 0x1000;
iomem_resource.end = 0xffffffff; /* expand to 4GB */
sprintf(pcode_str, "TX%lx", pcode);
/* SDRAMC,EBUSC are configured by PROM */
for (i = 0; i < 8; i++) {
if (!(tx4938_ebuscptr->cr[i] & 0x8))
continue; /* disabled */
rbtx4938_ce_base[i] = (unsigned long)TX4938_EBUSC_BA(i);
txboard_add_phys_region(rbtx4938_ce_base[i], TX4938_EBUSC_SIZE(i));
}
/* clocks */
if (txx9_master_clock) {
/* calculate gbus_clock and cpu_clock_freq from master_clock */
divmode = (unsigned long)tx4938_ccfgptr->ccfg & TX4938_CCFG_DIVMODE_MASK;
switch (divmode) {
case TX4938_CCFG_DIVMODE_8:
case TX4938_CCFG_DIVMODE_10:
case TX4938_CCFG_DIVMODE_12:
case TX4938_CCFG_DIVMODE_16:
case TX4938_CCFG_DIVMODE_18:
txx9_gbus_clock = txx9_master_clock * 4; break;
default:
txx9_gbus_clock = txx9_master_clock;
}
switch (divmode) {
case TX4938_CCFG_DIVMODE_2:
case TX4938_CCFG_DIVMODE_8:
cpuclk = txx9_gbus_clock * 2; break;
case TX4938_CCFG_DIVMODE_2_5:
case TX4938_CCFG_DIVMODE_10:
cpuclk = txx9_gbus_clock * 5 / 2; break;
case TX4938_CCFG_DIVMODE_3:
case TX4938_CCFG_DIVMODE_12:
cpuclk = txx9_gbus_clock * 3; break;
case TX4938_CCFG_DIVMODE_4:
case TX4938_CCFG_DIVMODE_16:
cpuclk = txx9_gbus_clock * 4; break;
case TX4938_CCFG_DIVMODE_4_5:
case TX4938_CCFG_DIVMODE_18:
cpuclk = txx9_gbus_clock * 9 / 2; break;
}
txx9_cpu_clock = cpuclk;
} else {
if (txx9_cpu_clock == 0) {
txx9_cpu_clock = 300000000; /* 300MHz */
}
/* calculate gbus_clock and master_clock from cpu_clock_freq */
cpuclk = txx9_cpu_clock;
divmode = (unsigned long)tx4938_ccfgptr->ccfg & TX4938_CCFG_DIVMODE_MASK;
switch (divmode) {
case TX4938_CCFG_DIVMODE_2:
case TX4938_CCFG_DIVMODE_8:
txx9_gbus_clock = cpuclk / 2; break;
case TX4938_CCFG_DIVMODE_2_5:
case TX4938_CCFG_DIVMODE_10:
txx9_gbus_clock = cpuclk * 2 / 5; break;
case TX4938_CCFG_DIVMODE_3:
case TX4938_CCFG_DIVMODE_12:
txx9_gbus_clock = cpuclk / 3; break;
case TX4938_CCFG_DIVMODE_4:
case TX4938_CCFG_DIVMODE_16:
txx9_gbus_clock = cpuclk / 4; break;
case TX4938_CCFG_DIVMODE_4_5:
case TX4938_CCFG_DIVMODE_18:
txx9_gbus_clock = cpuclk * 2 / 9; break;
}
switch (divmode) {
case TX4938_CCFG_DIVMODE_8:
case TX4938_CCFG_DIVMODE_10:
case TX4938_CCFG_DIVMODE_12:
case TX4938_CCFG_DIVMODE_16:
case TX4938_CCFG_DIVMODE_18:
txx9_master_clock = txx9_gbus_clock / 4; break;
default:
txx9_master_clock = txx9_gbus_clock;
}
}
/* change default value to udelay/mdelay take reasonable time */
loops_per_jiffy = txx9_cpu_clock / HZ / 2;
/* CCFG */
/* clear WatchDogReset,BusErrorOnWrite flag (W1C) */
tx4938_ccfgptr->ccfg |= TX4938_CCFG_WDRST | TX4938_CCFG_BEOW;
/* do reset on watchdog */
tx4938_ccfgptr->ccfg |= TX4938_CCFG_WR;
/* clear PCIC1 reset */
if (tx4938_ccfgptr->clkctr & TX4938_CLKCTR_PCIC1RST)
tx4938_ccfgptr->clkctr &= ~TX4938_CLKCTR_PCIC1RST;
/* enable Timeout BusError */
if (tx4938_ccfg_toeon)
tx4938_ccfgptr->ccfg |= TX4938_CCFG_TOE;
/* DMA selection */
tx4938_ccfgptr->pcfg &= ~TX4938_PCFG_DMASEL_ALL;
/* Use external clock for external arbiter */
if (!(tx4938_ccfgptr->ccfg & TX4938_CCFG_PCIXARB))
tx4938_ccfgptr->pcfg &= ~TX4938_PCFG_PCICLKEN_ALL;
printk("%s -- %dMHz(M%dMHz) CRIR:%08lx CCFG:%Lx PCFG:%Lx\n",
pcode_str,
cpuclk / 1000000, txx9_master_clock / 1000000,
(unsigned long)tx4938_ccfgptr->crir,
tx4938_ccfgptr->ccfg,
tx4938_ccfgptr->pcfg);
printk("%s SDRAMC --", pcode_str);
for (i = 0; i < 4; i++) {
unsigned long long cr = tx4938_sdramcptr->cr[i];
unsigned long ram_base, ram_size;
if (!((unsigned long)cr & 0x00000400))
continue; /* disabled */
ram_base = (unsigned long)(cr >> 49) << 21;
ram_size = ((unsigned long)(cr >> 33) + 1) << 21;
if (ram_base >= 0x20000000)
continue; /* high memory (ignore) */
printk(" CR%d:%016Lx", i, cr);
txboard_add_phys_region(ram_base, ram_size);
}
printk(" TR:%09Lx\n", tx4938_sdramcptr->tr);
/* SRAM */
if (pcode == 0x4938 && tx4938_sramcptr->cr & 1) {
unsigned int size = 0x800;
unsigned long base =
(tx4938_sramcptr->cr >> (39-11)) & ~(size - 1);
txboard_add_phys_region(base, size);
}
/* TMR */
for (i = 0; i < TX4938_NR_TMR; i++)
txx9_tmr_init(TX4938_TMR_REG(i) & 0xfffffffffULL);
/* enable DMA */
for (i = 0; i < 2; i++)
____raw_writeq(TX4938_DMA_MCR_MSTEN,
(void __iomem *)(TX4938_DMA_REG(i) + 0x50));
/* PIO */
__raw_writel(0, &tx4938_pioptr->maskcpu);
__raw_writel(0, &tx4938_pioptr->maskext);
/* TX4938 internal registers */
if (request_resource(&iomem_resource, &tx4938_reg_resource))
printk("request resource for internal registers failed\n");
}
#ifdef CONFIG_PCI
static inline void tx4938_report_pcic_status1(struct tx4938_pcic_reg *pcicptr)
{
unsigned short pcistatus = (unsigned short)(pcicptr->pcistatus >> 16);
unsigned long g2pstatus = pcicptr->g2pstatus;
unsigned long pcicstatus = pcicptr->pcicstatus;
static struct {
unsigned long flag;
const char *str;
} pcistat_tbl[] = {
{ PCI_STATUS_DETECTED_PARITY, "DetectedParityError" },
{ PCI_STATUS_SIG_SYSTEM_ERROR, "SignaledSystemError" },
{ PCI_STATUS_REC_MASTER_ABORT, "ReceivedMasterAbort" },
{ PCI_STATUS_REC_TARGET_ABORT, "ReceivedTargetAbort" },
{ PCI_STATUS_SIG_TARGET_ABORT, "SignaledTargetAbort" },
{ PCI_STATUS_PARITY, "MasterParityError" },
}, g2pstat_tbl[] = {
{ TX4938_PCIC_G2PSTATUS_TTOE, "TIOE" },
{ TX4938_PCIC_G2PSTATUS_RTOE, "RTOE" },
}, pcicstat_tbl[] = {
{ TX4938_PCIC_PCICSTATUS_PME, "PME" },
{ TX4938_PCIC_PCICSTATUS_TLB, "TLB" },
{ TX4938_PCIC_PCICSTATUS_NIB, "NIB" },
{ TX4938_PCIC_PCICSTATUS_ZIB, "ZIB" },
{ TX4938_PCIC_PCICSTATUS_PERR, "PERR" },
{ TX4938_PCIC_PCICSTATUS_SERR, "SERR" },
{ TX4938_PCIC_PCICSTATUS_GBE, "GBE" },
{ TX4938_PCIC_PCICSTATUS_IWB, "IWB" },
};
int i;
printk("pcistat:%04x(", pcistatus);
for (i = 0; i < ARRAY_SIZE(pcistat_tbl); i++)
if (pcistatus & pcistat_tbl[i].flag)
printk("%s ", pcistat_tbl[i].str);
printk("), g2pstatus:%08lx(", g2pstatus);
for (i = 0; i < ARRAY_SIZE(g2pstat_tbl); i++)
if (g2pstatus & g2pstat_tbl[i].flag)
printk("%s ", g2pstat_tbl[i].str);
printk("), pcicstatus:%08lx(", pcicstatus);
for (i = 0; i < ARRAY_SIZE(pcicstat_tbl); i++)
if (pcicstatus & pcicstat_tbl[i].flag)
printk("%s ", pcicstat_tbl[i].str);
printk(")\n");
}
void tx4938_report_pcic_status(void)
{
int i;
struct tx4938_pcic_reg *pcicptr;
for (i = 0; (pcicptr = get_tx4938_pcicptr(i)) != NULL; i++)
tx4938_report_pcic_status1(pcicptr);
}
#endif /* CONFIG_PCI */
void __init plat_time_init(void)
{
mips_hpt_frequency = txx9_cpu_clock / 2;
if (tx4938_ccfgptr->ccfg & TX4938_CCFG_TINTDIS)
txx9_clockevent_init(TX4938_TMR_REG(0) & 0xfffffffffULL,
TXX9_IRQ_BASE + TX4938_IR_TMR(0),
txx9_gbus_clock / 2);
}
void __init plat_mem_setup(void)
{
unsigned long long pcfg;
char *argptr;
iomem_resource.end = 0xffffffff; /* 4GB */
if (txx9_master_clock == 0)
txx9_master_clock = 25000000; /* 25MHz */
tx4938_board_setup();
#ifndef CONFIG_PCI
set_io_port_base(RBTX4938_ETHER_BASE);
#endif
#ifdef CONFIG_SERIAL_TXX9
{
extern int early_serial_txx9_setup(struct uart_port *port);
int i;
struct uart_port req;
for(i = 0; i < 2; i++) {
memset(&req, 0, sizeof(req));
req.line = i;
req.iotype = UPIO_MEM;
req.membase = (char *)(0xff1ff300 + i * 0x100);
req.mapbase = 0xff1ff300 + i * 0x100;
req.irq = RBTX4938_IRQ_IRC_SIO(i);
req.flags |= UPF_BUGGY_UART /*HAVE_CTS_LINE*/;
req.uartclk = 50000000;
early_serial_txx9_setup(&req);
}
}
#ifdef CONFIG_SERIAL_TXX9_CONSOLE
argptr = prom_getcmdline();
if (strstr(argptr, "console=") == NULL) {
strcat(argptr, " console=ttyS0,38400");
}
#endif
#endif
#ifdef CONFIG_TOSHIBA_RBTX4938_MPLEX_PIO58_61
printk("PIOSEL: disabling both ata and nand selection\n");
local_irq_disable();
tx4938_ccfgptr->pcfg &= ~(TX4938_PCFG_NDF_SEL | TX4938_PCFG_ATA_SEL);
#endif
#ifdef CONFIG_TOSHIBA_RBTX4938_MPLEX_NAND
printk("PIOSEL: enabling nand selection\n");
tx4938_ccfgptr->pcfg |= TX4938_PCFG_NDF_SEL;
tx4938_ccfgptr->pcfg &= ~TX4938_PCFG_ATA_SEL;
#endif
#ifdef CONFIG_TOSHIBA_RBTX4938_MPLEX_ATA
printk("PIOSEL: enabling ata selection\n");
tx4938_ccfgptr->pcfg |= TX4938_PCFG_ATA_SEL;
tx4938_ccfgptr->pcfg &= ~TX4938_PCFG_NDF_SEL;
#endif
#ifdef CONFIG_IP_PNP
argptr = prom_getcmdline();
if (strstr(argptr, "ip=") == NULL) {
strcat(argptr, " ip=any");
}
#endif
#ifdef CONFIG_FB
{
conswitchp = &dummy_con;
}
#endif
rbtx4938_spi_setup();
pcfg = tx4938_ccfgptr->pcfg; /* updated */
/* fixup piosel */
if ((pcfg & (TX4938_PCFG_ATA_SEL | TX4938_PCFG_NDF_SEL)) ==
TX4938_PCFG_ATA_SEL)
writeb((readb(rbtx4938_piosel_addr) & 0x03) | 0x04,
rbtx4938_piosel_addr);
else if ((pcfg & (TX4938_PCFG_ATA_SEL | TX4938_PCFG_NDF_SEL)) ==
TX4938_PCFG_NDF_SEL)
writeb((readb(rbtx4938_piosel_addr) & 0x03) | 0x08,
rbtx4938_piosel_addr);
else
writeb(readb(rbtx4938_piosel_addr) & ~(0x08 | 0x04),
rbtx4938_piosel_addr);
rbtx4938_fpga_resource.name = "FPGA Registers";
rbtx4938_fpga_resource.start = CPHYSADDR(RBTX4938_FPGA_REG_ADDR);
rbtx4938_fpga_resource.end = CPHYSADDR(RBTX4938_FPGA_REG_ADDR) + 0xffff;
rbtx4938_fpga_resource.flags = IORESOURCE_MEM | IORESOURCE_BUSY;
if (request_resource(&iomem_resource, &rbtx4938_fpga_resource))
printk("request resource for fpga failed\n");
_machine_restart = rbtx4938_machine_restart;
_machine_halt = rbtx4938_machine_halt;
pm_power_off = rbtx4938_machine_power_off;
writeb(0xff, rbtx4938_led_addr);
printk(KERN_INFO "RBTX4938 --- FPGA(Rev %02x) DIPSW:%02x,%02x\n",
readb(rbtx4938_fpga_rev_addr),
readb(rbtx4938_dipsw_addr), readb(rbtx4938_bdipsw_addr));
}
static int __init rbtx4938_ne_init(void)
{
struct resource res[] = {
{
.start = RBTX4938_RTL_8019_BASE,
.end = RBTX4938_RTL_8019_BASE + 0x20 - 1,
.flags = IORESOURCE_IO,
}, {
.start = RBTX4938_RTL_8019_IRQ,
.flags = IORESOURCE_IRQ,
}
};
struct platform_device *dev =
platform_device_register_simple("ne", -1,
res, ARRAY_SIZE(res));
return IS_ERR(dev) ? PTR_ERR(dev) : 0;
}
device_initcall(rbtx4938_ne_init);
/* GPIO support */
int gpio_to_irq(unsigned gpio)
{
return -EINVAL;
}
int irq_to_gpio(unsigned irq)
{
return -EINVAL;
}
static DEFINE_SPINLOCK(rbtx4938_spi_gpio_lock);
static void rbtx4938_spi_gpio_set(struct gpio_chip *chip, unsigned int offset,
int value)
{
u8 val;
unsigned long flags;
spin_lock_irqsave(&rbtx4938_spi_gpio_lock, flags);
val = readb(rbtx4938_spics_addr);
if (value)
val |= 1 << offset;
else
val &= ~(1 << offset);
writeb(val, rbtx4938_spics_addr);
mmiowb();
spin_unlock_irqrestore(&rbtx4938_spi_gpio_lock, flags);
}
static int rbtx4938_spi_gpio_dir_out(struct gpio_chip *chip,
unsigned int offset, int value)
{
rbtx4938_spi_gpio_set(chip, offset, value);
return 0;
}
static struct gpio_chip rbtx4938_spi_gpio_chip = {
.set = rbtx4938_spi_gpio_set,
.direction_output = rbtx4938_spi_gpio_dir_out,
.label = "RBTX4938-SPICS",
.base = 16,
.ngpio = 3,
};
/* SPI support */
static void __init txx9_spi_init(unsigned long base, int irq)
{
struct resource res[] = {
{
.start = base,
.end = base + 0x20 - 1,
.flags = IORESOURCE_MEM,
}, {
.start = irq,
.flags = IORESOURCE_IRQ,
},
};
platform_device_register_simple("spi_txx9", 0,
res, ARRAY_SIZE(res));
}
static int __init rbtx4938_spi_init(void)
{
struct spi_board_info srtc_info = {
.modalias = "rtc-rs5c348",
.max_speed_hz = 1000000, /* 1.0Mbps @ Vdd 2.0V */
.bus_num = 0,
.chip_select = 16 + SRTC_CS,
/* Mode 1 (High-Active, Shift-Then-Sample), High Avtive CS */
.mode = SPI_MODE_1 | SPI_CS_HIGH,
};
spi_register_board_info(&srtc_info, 1);
spi_eeprom_register(SEEPROM1_CS);
spi_eeprom_register(16 + SEEPROM2_CS);
spi_eeprom_register(16 + SEEPROM3_CS);
gpio_request(16 + SRTC_CS, "rtc-rs5c348");
gpio_direction_output(16 + SRTC_CS, 0);
gpio_request(SEEPROM1_CS, "seeprom1");
gpio_direction_output(SEEPROM1_CS, 1);
gpio_request(16 + SEEPROM2_CS, "seeprom2");
gpio_direction_output(16 + SEEPROM2_CS, 1);
gpio_request(16 + SEEPROM3_CS, "seeprom3");
gpio_direction_output(16 + SEEPROM3_CS, 1);
txx9_spi_init(TX4938_SPI_REG & 0xfffffffffULL, RBTX4938_IRQ_IRC_SPI);
return 0;
}
static int __init rbtx4938_arch_init(void)
{
txx9_gpio_init(TX4938_PIO_REG & 0xfffffffffULL, 0, 16);
gpiochip_add(&rbtx4938_spi_gpio_chip);
return rbtx4938_spi_init();
}
arch_initcall(rbtx4938_arch_init);
/* Watchdog support */
static int __init txx9_wdt_init(unsigned long base)
{
struct resource res = {
.start = base,
.end = base + 0x100 - 1,
.flags = IORESOURCE_MEM,
};
struct platform_device *dev =
platform_device_register_simple("txx9wdt", -1, &res, 1);
return IS_ERR(dev) ? PTR_ERR(dev) : 0;
}
static int __init rbtx4938_wdt_init(void)
{
return txx9_wdt_init(TX4938_TMR_REG(2) & 0xfffffffffULL);
}
device_initcall(rbtx4938_wdt_init);
/* Minimum CLK support */
struct clk *clk_get(struct device *dev, const char *id)
{
if (!strcmp(id, "spi-baseclk"))
return (struct clk *)(txx9_gbus_clock / 2 / 4);
if (!strcmp(id, "imbus_clk"))
return (struct clk *)(txx9_gbus_clock / 2);
return ERR_PTR(-ENOENT);
}
EXPORT_SYMBOL(clk_get);
int clk_enable(struct clk *clk)
{
return 0;
}
EXPORT_SYMBOL(clk_enable);
void clk_disable(struct clk *clk)
{
}
EXPORT_SYMBOL(clk_disable);
unsigned long clk_get_rate(struct clk *clk)
{
return (unsigned long)clk;
}
EXPORT_SYMBOL(clk_get_rate);
void clk_put(struct clk *clk)
{
}
EXPORT_SYMBOL(clk_put);
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