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/*
* 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.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
* NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 675 Mass Ave, Cambridge, MA 02139, USA.
*
* Copyright 2001 MontaVista Software Inc.
* Author: MontaVista Software, Inc.
* ahennessy@mvista.com
*
* Copyright (C) 2000-2001 Toshiba Corporation
* Copyright (C) 2007 Ralf Baechle (ralf@linux-mips.org)
*/
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/types.h>
#include <linux/ioport.h>
#include <linux/delay.h>
#include <linux/platform_device.h>
#include <linux/gpio.h>
#include <asm/reboot.h>
#include <asm/txx9pio.h>
#include <asm/txx9/generic.h>
#include <asm/txx9/pci.h>
#include <asm/txx9/jmr3927.h>
#include <asm/mipsregs.h>
static void jmr3927_machine_restart(char *command)
{
local_irq_disable();
#if 1 /* Resetting PCI bus */
jmr3927_ioc_reg_out(0, JMR3927_IOC_RESET_ADDR);
jmr3927_ioc_reg_out(JMR3927_IOC_RESET_PCI, JMR3927_IOC_RESET_ADDR);
(void)jmr3927_ioc_reg_in(JMR3927_IOC_RESET_ADDR); /* flush WB */
mdelay(1);
jmr3927_ioc_reg_out(0, JMR3927_IOC_RESET_ADDR);
#endif
jmr3927_ioc_reg_out(JMR3927_IOC_RESET_CPU, JMR3927_IOC_RESET_ADDR);
/* fallback */
(*_machine_halt)();
}
static void __init jmr3927_time_init(void)
{
tx3927_time_init(0, 1);
}
#define DO_WRITE_THROUGH
#define DO_ENABLE_CACHE
static void jmr3927_board_init(void);
static void __init jmr3927_mem_setup(void)
{
char *argptr;
set_io_port_base(JMR3927_PORT_BASE + JMR3927_PCIIO);
_machine_restart = jmr3927_machine_restart;
/* Reboot on panic */
panic_timeout = 180;
/* cache setup */
{
unsigned int conf;
#ifdef DO_ENABLE_CACHE
int mips_ic_disable = 0, mips_dc_disable = 0;
#else
int mips_ic_disable = 1, mips_dc_disable = 1;
#endif
#ifdef DO_WRITE_THROUGH
int mips_config_cwfon = 0;
int mips_config_wbon = 0;
#else
int mips_config_cwfon = 1;
int mips_config_wbon = 1;
#endif
conf = read_c0_conf();
conf &= ~(TX39_CONF_ICE | TX39_CONF_DCE | TX39_CONF_WBON | TX39_CONF_CWFON);
conf |= mips_ic_disable ? 0 : TX39_CONF_ICE;
conf |= mips_dc_disable ? 0 : TX39_CONF_DCE;
conf |= mips_config_wbon ? TX39_CONF_WBON : 0;
conf |= mips_config_cwfon ? TX39_CONF_CWFON : 0;
write_c0_conf(conf);
write_c0_cache(0);
}
/* initialize board */
jmr3927_board_init();
argptr = prom_getcmdline();
if ((argptr = strstr(argptr, "ip=")) == NULL) {
argptr = prom_getcmdline();
strcat(argptr, " ip=bootp");
}
tx3927_setup_serial(1 << 1); /* ch1: noCTS */
#ifdef CONFIG_SERIAL_TXX9_CONSOLE
argptr = prom_getcmdline();
if ((argptr = strstr(argptr, "console=")) == NULL) {
argptr = prom_getcmdline();
strcat(argptr, " console=ttyS1,115200");
}
#endif
}
static void __init jmr3927_pci_setup(void)
{
#ifdef CONFIG_PCI
int extarb = !(tx3927_ccfgptr->ccfg & TX3927_CCFG_PCIXARB);
struct pci_controller *c;
c = txx9_alloc_pci_controller(&txx9_primary_pcic,
JMR3927_PCIMEM, JMR3927_PCIMEM_SIZE,
JMR3927_PCIIO, JMR3927_PCIIO_SIZE);
register_pci_controller(c);
if (!extarb) {
/* Reset PCI Bus */
jmr3927_ioc_reg_out(0, JMR3927_IOC_RESET_ADDR);
udelay(100);
jmr3927_ioc_reg_out(JMR3927_IOC_RESET_PCI,
JMR3927_IOC_RESET_ADDR);
udelay(100);
jmr3927_ioc_reg_out(0, JMR3927_IOC_RESET_ADDR);
}
tx3927_pcic_setup(c, JMR3927_SDRAM_SIZE, extarb);
tx3927_setup_pcierr_irq();
#endif /* CONFIG_PCI */
}
static void __init jmr3927_board_init(void)
{
txx9_cpu_clock = JMR3927_CORECLK;
/* SDRAMC are configured by PROM */
/* ROMC */
tx3927_romcptr->cr[1] = JMR3927_ROMCE1 | 0x00030048;
tx3927_romcptr->cr[2] = JMR3927_ROMCE2 | 0x000064c8;
tx3927_romcptr->cr[3] = JMR3927_ROMCE3 | 0x0003f698;
tx3927_romcptr->cr[5] = JMR3927_ROMCE5 | 0x0000f218;
/* Pin selection */
tx3927_ccfgptr->pcfg &= ~TX3927_PCFG_SELALL;
tx3927_ccfgptr->pcfg |=
TX3927_PCFG_SELSIOC(0) | TX3927_PCFG_SELSIO_ALL |
(TX3927_PCFG_SELDMA_ALL & ~TX3927_PCFG_SELDMA(1));
tx3927_setup();
/* PIO[15:12] connected to LEDs */
__raw_writel(0x0000f000, &tx3927_pioptr->dir);
gpio_request(11, "dipsw1");
gpio_request(10, "dipsw2");
jmr3927_pci_setup();
/* SIO0 DTR on */
jmr3927_ioc_reg_out(0, JMR3927_IOC_DTR_ADDR);
jmr3927_led_set(0);
printk(KERN_INFO
"JMR-TX3927 (Rev %d) --- IOC(Rev %d) DIPSW:%d,%d,%d,%d\n",
jmr3927_ioc_reg_in(JMR3927_IOC_BREV_ADDR) & JMR3927_REV_MASK,
jmr3927_ioc_reg_in(JMR3927_IOC_REV_ADDR) & JMR3927_REV_MASK,
jmr3927_dipsw1(), jmr3927_dipsw2(),
jmr3927_dipsw3(), jmr3927_dipsw4());
}
/* This trick makes rtc-ds1742 driver usable as is. */
static unsigned long jmr3927_swizzle_addr_b(unsigned long port)
{
if ((port & 0xffff0000) != JMR3927_IOC_NVRAMB_ADDR)
return port;
port = (port & 0xffff0000) | (port & 0x7fff << 1);
#ifdef __BIG_ENDIAN
return port;
#else
return port | 1;
#endif
}
static int __init jmr3927_rtc_init(void)
{
static struct resource __initdata res = {
.start = JMR3927_IOC_NVRAMB_ADDR - IO_BASE,
.end = JMR3927_IOC_NVRAMB_ADDR - IO_BASE + 0x800 - 1,
.flags = IORESOURCE_MEM,
};
struct platform_device *dev;
dev = platform_device_register_simple("rtc-ds1742", -1, &res, 1);
return IS_ERR(dev) ? PTR_ERR(dev) : 0;
}
static void __init jmr3927_device_init(void)
{
__swizzle_addr_b = jmr3927_swizzle_addr_b;
jmr3927_rtc_init();
tx3927_wdt_init();
}
struct txx9_board_vec jmr3927_vec __initdata = {
.system = "Toshiba JMR_TX3927",
.prom_init = jmr3927_prom_init,
.mem_setup = jmr3927_mem_setup,
.irq_setup = jmr3927_irq_setup,
.time_init = jmr3927_time_init,
.device_init = jmr3927_device_init,
#ifdef CONFIG_PCI
.pci_map_irq = jmr3927_pci_map_irq,
#endif
};
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