Resurrect Cobalt support for 2.6.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

1 files changed, 71 insertions, 29 deletions

diff --git a/arch/mips/cobalt/setup.c b/arch/mips/cobalt/setup.c
index f8138c1..d358a11 100644
--- a/arch/mips/cobalt/setup.c
+++ b/arch/mips/cobalt/setup.c
@@ -13,6 +13,8 @@
 #include <linux/interrupt.h>
 #include <linux/pci.h>
 #include <linux/init.h>
+#include <linux/serial.h>
+#include <linux/serial_core.h>
 
 #include <asm/bootinfo.h>
 #include <asm/time.h>
@@ -21,6 +23,7 @@
 #include <asm/processor.h>
 #include <asm/reboot.h>
 #include <asm/gt64120.h>
+#include <asm/serial.h>
 
 #include <asm/cobalt/cobalt.h>
 
@@ -30,45 +33,44 @@ extern void cobalt_machine_power_off(void);
 
 int cobalt_board_id;
 
-static char my_cmdline[CL_SIZE] = {
- "console=ttyS0,115200 "
-#ifdef CONFIG_IP_PNP
- "ip=on "
-#endif
-#ifdef CONFIG_ROOT_NFS
- "root=/dev/nfs "
-#else
- "root=/dev/hda1 "
-#endif
- };
-
 const char *get_system_type(void)
 {
+	switch (cobalt_board_id) {
+		case COBALT_BRD_ID_QUBE1:
+			return "Cobalt Qube";
+		case COBALT_BRD_ID_RAQ1:
+			return "Cobalt RaQ";
+		case COBALT_BRD_ID_QUBE2:
+			return "Cobalt Qube2";
+		case COBALT_BRD_ID_RAQ2:
+			return "Cobalt RaQ2";
+	}
 	return "MIPS Cobalt";
 }
 
 static void __init cobalt_timer_setup(struct irqaction *irq)
 {
-	/* Load timer value for 150 Hz */
-	GALILEO_OUTL(500000, GT_TC0_OFS);
+	/* Load timer value for 1KHz (TCLK is 50MHz) */
+	GALILEO_OUTL(50*1000*1000 / 1000, GT_TC0_OFS);
 
-	/* Register our timer interrupt */
-	setup_irq(COBALT_TIMER_IRQ, irq);
+	/* Enable timer */
+	GALILEO_OUTL(GALILEO_ENTC0 | GALILEO_SELTC0, GT_TC_CONTROL_OFS);
 
-	/* Enable timer ints */
-	GALILEO_OUTL((GALILEO_ENTC0 | GALILEO_SELTC0), GT_TC_CONTROL_OFS);
-	/* Unmask timer int */
-	GALILEO_OUTL(0x100, GT_INTRMASK_OFS);
+	/* Register interrupt */
+	setup_irq(COBALT_GALILEO_IRQ, irq);
+
+	/* Enable interrupt */
+	GALILEO_OUTL(GALILEO_INTR_T0EXP | GALILEO_INL(GT_INTRMASK_OFS), GT_INTRMASK_OFS);
 }
 
 extern struct pci_ops gt64111_pci_ops;
 
 static struct resource cobalt_mem_resource = {
-	"GT64111 PCI MEM", GT64111_IO_BASE, 0xffffffffUL, IORESOURCE_MEM
+	"PCI memory", GT64111_MEM_BASE, GT64111_MEM_END, IORESOURCE_MEM
 };
 
 static struct resource cobalt_io_resource = {
-	"GT64111 IO MEM", 0x00001000UL, 0x0fffffffUL, IORESOURCE_IO
+	"PCI I/O", 0x1000, 0xffff, IORESOURCE_IO
 };
 
 static struct resource cobalt_io_resources[] = {
@@ -86,11 +88,12 @@ static struct pci_controller cobalt_pci_controller = {
 	.mem_resource	= &cobalt_mem_resource,
 	.mem_offset	= 0,
 	.io_resource	= &cobalt_io_resource,
-	.io_offset	= 0x00001000UL - GT64111_IO_BASE
+	.io_offset	= 0 - GT64111_IO_BASE
 };
 
 void __init plat_setup(void)
 {
+	static struct uart_port uart;
 	unsigned int devfn = PCI_DEVFN(COBALT_PCICONF_VIA, 0);
 	int i;
 
@@ -100,7 +103,10 @@ void __init plat_setup(void)
 
 	board_timer_setup = cobalt_timer_setup;
 
-        set_io_port_base(KSEG1ADDR(GT64111_IO_BASE));
+        set_io_port_base(CKSEG1ADDR(GT64111_IO_BASE));
+
+	/* I/O port resource must include UART and LCD/buttons */
+	ioport_resource.end = 0x0fffffff;
 
 	/*
 	 * This is a prom style console. We just poke at the
@@ -120,25 +126,61 @@ void __init plat_setup(void)
         cobalt_board_id >>= ((VIA_COBALT_BRD_ID_REG & 3) * 8);
         cobalt_board_id = VIA_COBALT_BRD_REG_to_ID(cobalt_board_id);
 
+	printk("Cobalt board ID: %d\n", cobalt_board_id);
+
 #ifdef CONFIG_PCI
 	register_pci_controller(&cobalt_pci_controller);
 #endif
+
+#ifdef CONFIG_SERIAL_8250
+	if (cobalt_board_id > COBALT_BRD_ID_RAQ1) {
+
+		uart.line	= 0;
+		uart.type	= PORT_UNKNOWN;
+		uart.uartclk	= 18432000;
+		uart.irq	= COBALT_SERIAL_IRQ;
+		uart.flags	= STD_COM_FLAGS;
+		uart.iobase	= 0xc800000;
+		uart.iotype	= UPIO_PORT;
+
+		early_serial_setup(&uart);
+	}
+#endif
 }
 
 /*
  * Prom init. We read our one and only communication with the firmware.
- * Grab the amount of installed memory
+ * Grab the amount of installed memory.
+ * Better boot loaders (CoLo) pass a command line too :-)
  */
 
 void __init prom_init(void)
 {
-	int argc = fw_arg0;
-
-	strcpy(arcs_cmdline, my_cmdline);
+	int narg, indx, posn, nchr;
+	unsigned long memsz;
+	char **argv;
 
 	mips_machgroup = MACH_GROUP_COBALT;
 
-	add_memory_region(0x0, argc & 0x7fffffff, BOOT_MEM_RAM);
+	memsz = fw_arg0 & 0x7fff0000;
+	narg = fw_arg0 & 0x0000ffff;
+
+	if (narg) {
+		arcs_cmdline[0] = '\0';
+		argv = (char **) fw_arg1;
+		posn = 0;
+		for (indx = 1; indx < narg; ++indx) {
+			nchr = strlen(argv[indx]);
+			if (posn + 1 + nchr + 1 > sizeof(arcs_cmdline))
+				break;
+			if (posn)
+				arcs_cmdline[posn++] = ' ';
+			strcpy(arcs_cmdline + posn, argv[indx]);
+			posn += nchr;
+		}
+	}
+
+	add_memory_region(0x0, memsz, BOOT_MEM_RAM);
 }
 
 unsigned long __init prom_free_prom_memory(void)