[MIPS] TXx9: Add 64-bit support

SYS_SUPPORTS_64BIT_KERNEL is enabled for RBTX4927/RBTX4938, but
actually it was broken for long time (or from the beginning).  Now it
should work.

Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

2 files changed, 31 insertions, 70 deletions

diff --git a/arch/mips/txx9/rbtx4927/irq.c b/arch/mips/txx9/rbtx4927/irq.c
index 70f13211bc2a..cd748a930328 100644
--- a/arch/mips/txx9/rbtx4927/irq.c
+++ b/arch/mips/txx9/rbtx4927/irq.c
@@ -126,14 +126,12 @@ static struct irq_chip toshiba_rbtx4927_irq_ioc_type = {
 	.mask_ack = toshiba_rbtx4927_irq_ioc_disable,
 	.unmask = toshiba_rbtx4927_irq_ioc_enable,
 };
-#define TOSHIBA_RBTX4927_IOC_INTR_ENAB (void __iomem *)0xbc002000UL
-#define TOSHIBA_RBTX4927_IOC_INTR_STAT (void __iomem *)0xbc002006UL
 
 static int toshiba_rbtx4927_irq_nested(int sw_irq)
 {
 	u8 level3;
 
-	level3 = readb(TOSHIBA_RBTX4927_IOC_INTR_STAT) & 0x1f;
+	level3 = readb(rbtx4927_imstat_addr) & 0x1f;
 	if (level3)
 		sw_irq = RBTX4927_IRQ_IOC + fls(level3) - 1;
 	return (sw_irq);
@@ -154,18 +152,18 @@ static void toshiba_rbtx4927_irq_ioc_enable(unsigned int irq)
 {
 	unsigned char v;
 
-	v = readb(TOSHIBA_RBTX4927_IOC_INTR_ENAB);
+	v = readb(rbtx4927_imask_addr);
 	v |= (1 << (irq - RBTX4927_IRQ_IOC));
-	writeb(v, TOSHIBA_RBTX4927_IOC_INTR_ENAB);
+	writeb(v, rbtx4927_imask_addr);
 }
 
 static void toshiba_rbtx4927_irq_ioc_disable(unsigned int irq)
 {
 	unsigned char v;
 
-	v = readb(TOSHIBA_RBTX4927_IOC_INTR_ENAB);
+	v = readb(rbtx4927_imask_addr);
 	v &= ~(1 << (irq - RBTX4927_IRQ_IOC));
-	writeb(v, TOSHIBA_RBTX4927_IOC_INTR_ENAB);
+	writeb(v, rbtx4927_imask_addr);
 	mmiowb();
 }
 
diff --git a/arch/mips/txx9/rbtx4927/setup.c b/arch/mips/txx9/rbtx4927/setup.c
index 1657fd935da8..3da20ea3e55c 100644
--- a/arch/mips/txx9/rbtx4927/setup.c
+++ b/arch/mips/txx9/rbtx4927/setup.c
@@ -53,17 +53,10 @@
 #include <asm/io.h>
 #include <asm/processor.h>
 #include <asm/reboot.h>
-#include <asm/time.h>
-#include <asm/txx9tmr.h>
 #include <asm/txx9/generic.h>
 #include <asm/txx9/pci.h>
 #include <asm/txx9/rbtx4927.h>
 #include <asm/txx9/tx4938.h>	/* for TX4937 */
-#ifdef CONFIG_SERIAL_TXX9
-#include <linux/serial_core.h>
-#endif
-
-static int tx4927_ccfg_toeon = 1;
 
 #ifdef CONFIG_PCI
 static void __init tx4927_pci_setup(void)
@@ -184,14 +177,14 @@ static void toshiba_rbtx4927_restart(char *command)
 	printk(KERN_NOTICE "System Rebooting...\n");
 
 	/* enable the s/w reset register */
-	writeb(RBTX4927_SW_RESET_ENABLE_SET, RBTX4927_SW_RESET_ENABLE);
+	writeb(1, rbtx4927_softresetlock_addr);
 
 	/* wait for enable to be seen */
-	while ((readb(RBTX4927_SW_RESET_ENABLE) &
-		RBTX4927_SW_RESET_ENABLE_SET) == 0x00);
+	while (!(readb(rbtx4927_softresetlock_addr) & 1))
+		;
 
 	/* do a s/w reset */
-	writeb(RBTX4927_SW_RESET_DO_SET, RBTX4927_SW_RESET_DO);
+	writeb(1, rbtx4927_softreset_addr);
 
 	/* do something passive while waiting for reset */
 	local_irq_disable();
@@ -213,9 +206,11 @@ static void toshiba_rbtx4927_power_off(void)
 	/* no return */
 }
 
+static void __init rbtx4927_clock_init(void);
+static void __init rbtx4937_clock_init(void);
+
 static void __init rbtx4927_mem_setup(void)
 {
-	int i;
 	u32 cp0_config;
 	char *argptr;
 
@@ -227,16 +222,18 @@ static void __init rbtx4927_mem_setup(void)
 	cp0_config = cp0_config & ~(TX49_CONF_IC | TX49_CONF_DC);
 	write_c0_config(cp0_config);
 
-	ioport_resource.end = 0xffffffff;
-	iomem_resource.end = 0xffffffff;
+	if (TX4927_REV_PCODE() == 0x4927) {
+		rbtx4927_clock_init();
+		tx4927_setup();
+	} else {
+		rbtx4937_clock_init();
+		tx4938_setup();
+	}
 
 	_machine_restart = toshiba_rbtx4927_restart;
 	_machine_halt = toshiba_rbtx4927_halt;
 	pm_power_off = toshiba_rbtx4927_power_off;
 
-	for (i = 0; i < TX4927_NR_TMR; i++)
-		txx9_tmr_init(TX4927_TMR_REG(0) & 0xfffffffffULL);
-
 #ifdef CONFIG_PCI
 	txx9_alloc_pci_controller(&txx9_primary_pcic,
 				  RBTX4927_PCIMEM, RBTX4927_PCIMEM_SIZE,
@@ -245,36 +242,13 @@ static void __init rbtx4927_mem_setup(void)
 	set_io_port_base(KSEG1 + RBTX4927_ISA_IO_OFFSET);
 #endif
 
-	/* CCFG */
-	/* do reset on watchdog */
-	tx4927_ccfg_set(TX4927_CCFG_WR);
-	/* enable Timeout BusError */
-	if (tx4927_ccfg_toeon)
-		tx4927_ccfg_set(TX4927_CCFG_TOE);
-
-#ifdef CONFIG_SERIAL_TXX9
-	{
-		extern int early_serial_txx9_setup(struct uart_port *port);
-		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 = TXX9_IRQ_BASE + TX4927_IR_SIO(i);
-			req.flags |= UPF_BUGGY_UART /*HAVE_CTS_LINE*/;
-			req.uartclk = 50000000;
-			early_serial_txx9_setup(&req);
-		}
-	}
+	tx4927_setup_serial();
 #ifdef CONFIG_SERIAL_TXX9_CONSOLE
         argptr = prom_getcmdline();
         if (strstr(argptr, "console=") == NULL) {
                 strcat(argptr, " console=ttyS0,38400");
         }
 #endif
-#endif
 
 #ifdef CONFIG_ROOT_NFS
         argptr = prom_getcmdline();
@@ -291,19 +265,7 @@ static void __init rbtx4927_mem_setup(void)
 #endif
 }
 
-static void __init rbtx49x7_common_time_init(void)
-{
-	/* change default value to udelay/mdelay take reasonable time */
-	loops_per_jiffy = txx9_cpu_clock / HZ / 2;
-
-	mips_hpt_frequency = txx9_cpu_clock / 2;
-	if (____raw_readq(&tx4927_ccfgptr->ccfg) & TX4927_CCFG_TINTDIS)
-		txx9_clockevent_init(TX4927_TMR_REG(0) & 0xfffffffffULL,
-				     TXX9_IRQ_BASE + 17,
-				     50000000);
-}
-
-static void __init rbtx4927_time_init(void)
+static void __init rbtx4927_clock_init(void)
 {
 	/*
 	 * ASSUMPTION: PCIDIVMODE is configured for PCI 33MHz or 66MHz.
@@ -325,11 +287,9 @@ static void __init rbtx4927_time_init(void)
 	default:
 		txx9_cpu_clock = 200000000;	/* 200MHz */
 	}
-
-	rbtx49x7_common_time_init();
 }
 
-static void __init rbtx4937_time_init(void)
+static void __init rbtx4937_clock_init(void)
 {
 	/*
 	 * ASSUMPTION: PCIDIVMODE is configured for PCI 33MHz or 66MHz.
@@ -357,15 +317,18 @@ static void __init rbtx4937_time_init(void)
 	default:
 		txx9_cpu_clock = 333333333;	/* 333MHz */
 	}
+}
 
-	rbtx49x7_common_time_init();
+static void __init rbtx4927_time_init(void)
+{
+	tx4927_time_init(0);
 }
 
 static int __init toshiba_rbtx4927_rtc_init(void)
 {
-	static struct resource __initdata res = {
-		.start	= 0x1c010000,
-		.end	= 0x1c010000 + 0x800 - 1,
+	struct resource res = {
+		.start	= RBTX4927_BRAMRTC_BASE - IO_BASE,
+		.end	= RBTX4927_BRAMRTC_BASE - IO_BASE + 0x800 - 1,
 		.flags	= IORESOURCE_MEM,
 	};
 	struct platform_device *dev =
@@ -375,7 +338,7 @@ static int __init toshiba_rbtx4927_rtc_init(void)
 
 static int __init rbtx4927_ne_init(void)
 {
-	static struct resource __initdata res[] = {
+	struct resource res[] = {
 		{
 			.start	= RBTX4927_RTL_8019_BASE,
 			.end	= RBTX4927_RTL_8019_BASE + 0x20 - 1,
@@ -434,7 +397,7 @@ struct txx9_board_vec rbtx4937_vec __initdata = {
 	.prom_init = rbtx4927_prom_init,
 	.mem_setup = rbtx4927_mem_setup,
 	.irq_setup = rbtx4927_irq_setup,
-	.time_init = rbtx4937_time_init,
+	.time_init = rbtx4927_time_init,
 	.device_init = rbtx4927_device_init,
 	.arch_init = rbtx4937_arch_init,
 #ifdef CONFIG_PCI