finally move buildroot-ng to trunk

1 files changed, 286 insertions, 0 deletions

diff --git a/target/linux/aruba-2.6/patches/002-irq.patch b/target/linux/aruba-2.6/patches/002-irq.patch
new file mode 100644
index 0000000..f6b9425
--- /dev/null
+++ b/target/linux/aruba-2.6/patches/002-irq.patch
@@ -0,0 +1,286 @@
+diff -Nur linux-2.6.17/arch/mips/aruba/irq.c linux-2.6.17-openwrt/arch/mips/aruba/irq.c
+--- linux-2.6.17/arch/mips/aruba/irq.c	1970-01-01 01:00:00.000000000 +0100
++++ linux-2.6.17-openwrt/arch/mips/aruba/irq.c	2006-10-12 14:32:40.026285000 -0700
+@@ -0,0 +1,282 @@
++#include <linux/errno.h>
++#include <linux/init.h>
++#include <linux/kernel_stat.h>
++#include <linux/module.h>
++#include <linux/signal.h>
++#include <linux/sched.h>
++#include <linux/types.h>
++#include <linux/interrupt.h>
++#include <linux/ioport.h>
++#include <linux/timex.h>
++#include <linux/slab.h>
++#include <linux/random.h>
++#include <linux/delay.h>
++
++#include <asm/bitops.h>
++#include <asm/bootinfo.h>
++#include <asm/io.h>
++#include <asm/mipsregs.h>
++#include <asm/system.h>
++#include <asm/idt-boards/rc32434/rc32434.h>
++#include <asm/idt-boards/rc32434/rc32434_gpio.h>
++
++#include <asm/irq.h>
++
++extern void aruba_timer_interrupt(struct pt_regs *regs);
++
++typedef struct {
++	u32 mask;
++	volatile u32 *base_addr;
++} intr_group_t;
++
++static const intr_group_t intr_group_merlot[NUM_INTR_GROUPS] = {
++	{0x00000000, (u32 *) KSEG1ADDR(IC_GROUP0_PEND + 0)},
++};
++
++#define READ_PEND_MERLOT(base) (*((volatile unsigned long *)(0xbc003010)))
++#define READ_MASK_MERLOT(base) (*((volatile unsigned long *)(0xbc003014)))
++#define WRITE_MASK_MERLOT(base, val) ((*((volatile unsigned long *)(0xbc003014))) = (val), READ_MASK_MERLOT())
++
++static const intr_group_t intr_group_muscat[NUM_INTR_GROUPS] = {
++	{0x0000efff, (u32 *) KSEG1ADDR(IC_GROUP0_PEND + 0 * IC_GROUP_OFFSET)},
++	{0x00001fff, (u32 *) KSEG1ADDR(IC_GROUP0_PEND + 1 * IC_GROUP_OFFSET)},
++	{0x00000007, (u32 *) KSEG1ADDR(IC_GROUP0_PEND + 2 * IC_GROUP_OFFSET)},
++	{0x0003ffff, (u32 *) KSEG1ADDR(IC_GROUP0_PEND + 3 * IC_GROUP_OFFSET)},
++	{0xffffffff, (u32 *) KSEG1ADDR(IC_GROUP0_PEND + 4 * IC_GROUP_OFFSET)}
++};
++
++#define READ_PEND_MUSCAT(base) (*(base))
++#define READ_MASK_MUSCAT(base) (*(base + 2))
++#define WRITE_MASK_MUSCAT(base, val) (*(base + 2) = (val))
++
++static inline int group_to_ip(unsigned int group)
++{
++	switch (mips_machtype) {
++		case MACH_ARUBA_AP70:
++			return group + 2;
++		case MACH_ARUBA_AP65:
++		case MACH_ARUBA_AP60:
++		default:
++			return 6;
++	}
++}
++
++static inline void enable_local_irq(unsigned int irq)
++{
++	clear_c0_cause(0x100 << irq);
++	set_c0_status(0x100 << irq);
++	irq_enable_hazard();
++}
++
++static inline void disable_local_irq(unsigned int irq)
++{
++	clear_c0_status(0x100 << irq);
++	clear_c0_cause(0x100 << irq);
++	irq_disable_hazard();
++}
++
++static inline void aruba_irq_enable(unsigned int irq)
++{
++	unsigned long flags;
++	unsigned int  group, intr_bit;
++	volatile unsigned int  *addr;
++
++	local_irq_save(flags);
++
++	if (irq < GROUP0_IRQ_BASE) {
++		enable_local_irq(irq);
++	} else {
++		int ip = irq - GROUP0_IRQ_BASE;
++		switch (mips_machtype) {
++			case MACH_ARUBA_AP70:
++				// irqs are in groups of 32
++				// ip is set to the remainder
++				group = ip >> 5;
++				ip &= 0x1f;
++
++				// bit -> 0 = unmask
++				intr_bit = 1 << ip;
++				addr = intr_group_muscat[group].base_addr;
++				WRITE_MASK_MUSCAT(addr, READ_MASK_MUSCAT(addr) & ~intr_bit);
++				break;
++
++			case MACH_ARUBA_AP65:
++			case MACH_ARUBA_AP60:
++				group = 0;
++
++				// bit -> 1 = unmasked
++				intr_bit = 1 << ip;
++				addr = intr_group_merlot[group].base_addr;
++				WRITE_MASK_MERLOT(addr, READ_MASK_MERLOT(addr) | intr_bit);
++				break;
++		}
++		enable_local_irq(group_to_ip(group));
++	}
++
++	back_to_back_c0_hazard();
++	local_irq_restore(flags);
++}
++
++static void aruba_irq_disable(unsigned int irq)
++{
++	unsigned long flags;
++	unsigned int  group, intr_bit, mask;
++	volatile unsigned int  *addr;
++
++	local_irq_save(flags);
++
++	if (irq < GROUP0_IRQ_BASE) {
++		disable_local_irq(irq);
++	} else {
++		int ip = irq - GROUP0_IRQ_BASE;
++		switch (mips_machtype) {
++			case MACH_ARUBA_AP70:
++				idt_gpio->gpioistat &= ~(1 << ip);
++
++				// irqs are in groups of 32
++				// ip is set to the remainder
++				group = ip >> 5;
++				ip &= 0x1f;
++
++				// bit -> 1 = mask
++				intr_bit = 1 << ip;
++				addr = intr_group_muscat[group].base_addr;
++
++				mask = READ_MASK_MUSCAT(addr);
++				mask |= intr_bit;
++				WRITE_MASK_MUSCAT(addr, mask);
++
++				if (mask == intr_group_muscat[group].mask) {
++					disable_local_irq(group_to_ip(group));
++				}
++				break;
++
++			case MACH_ARUBA_AP65:
++			case MACH_ARUBA_AP60:
++				group = 0;
++
++				// bit -> 0 = masked
++				intr_bit = 1 << ip;
++				addr = intr_group_merlot[group].base_addr;
++
++				mask = READ_MASK_MERLOT(addr);
++				mask &= ~intr_bit;
++				WRITE_MASK_MERLOT(addr, mask);
++
++				if (mask == intr_group_merlot[group].mask) {
++					disable_local_irq(group_to_ip(group));
++				}
++				break;
++		}
++	}
++
++	back_to_back_c0_hazard();
++	local_irq_restore(flags);
++}
++
++static unsigned int aruba_irq_startup(unsigned int irq)
++{
++	aruba_irq_enable(irq);
++	return 0;
++}
++
++#define aruba_irq_shutdown aruba_irq_disable
++
++static void aruba_irq_ack(unsigned int irq)
++{
++	aruba_irq_disable(irq);
++}
++
++static void aruba_irq_end(unsigned int irq)
++{
++	if (!(irq_desc[irq].status & (IRQ_DISABLED | IRQ_INPROGRESS)))
++		aruba_irq_enable(irq);
++}
++
++static struct hw_interrupt_type aruba_irq_type = {
++	.typename	= "ARUBA",
++	.startup	= aruba_irq_startup,
++	.shutdown	= aruba_irq_shutdown,
++	.enable		= aruba_irq_enable,
++	.disable	= aruba_irq_disable,
++	.ack		= aruba_irq_ack,
++	.end		= aruba_irq_end,
++};
++
++void __init arch_init_irq(void)
++{
++	int i;
++	printk("Initializing IRQ's: %d out of %d\n", RC32434_NR_IRQS, NR_IRQS);
++	memset(irq_desc, 0, sizeof(irq_desc));
++
++	for (i = 0; i < RC32434_NR_IRQS; i++) {
++		irq_desc[i].status = IRQ_DISABLED;
++		irq_desc[i].action = NULL;
++		irq_desc[i].depth = 1;
++		irq_desc[i].handler = &aruba_irq_type;
++		spin_lock_init(&irq_desc[i].lock);
++	}
++}
++
++/* Main Interrupt dispatcher */
++
++void plat_irq_dispatch(struct pt_regs *regs)
++{
++	unsigned int pend, group, ip;
++	volatile unsigned int *addr;
++	unsigned long cp0_cause = read_c0_cause() & read_c0_status() & CAUSEF_IP;
++
++	if (cp0_cause & CAUSEF_IP7)
++		return aruba_timer_interrupt(regs);
++
++	if(cp0_cause == 0) {
++		printk("INTERRUPT(S) FIRED WHILE MASKED\n");
++#ifdef ARUBA_DEBUG
++		// debuging use -- figure out which interrupt(s) fired
++		cp0_cause = read_c0_cause() & CAUSEF_IP;
++		while (cp0_cause) {
++			unsigned long intr_bit;
++			unsigned int irq_nr;
++			intr_bit = (31 - rc32434_clz(cp0_cause));
++			irq_nr = intr_bit - GROUP0_IRQ_BASE;
++			printk(" ---> MASKED IRQ %d\n",irq_nr);
++			cp0_cause &= ~(1 << intr_bit);
++		}
++#endif
++		return;
++	}
++
++	switch (mips_machtype) {
++		case MACH_ARUBA_AP70:
++			if ((ip = (cp0_cause & 0x7c00))) {
++				group = 21 - rc32434_clz(ip);
++		
++				addr = intr_group_muscat[group].base_addr;
++		
++				pend = READ_PEND_MUSCAT(addr);
++				pend &= ~READ_MASK_MUSCAT(addr); // only unmasked interrupts
++				pend = 39 - rc32434_clz(pend);
++				do_IRQ(pend + (group << 5), regs);
++			}
++			break;
++		case MACH_ARUBA_AP65:
++		case MACH_ARUBA_AP60:
++		default:
++			if (cp0_cause & 0x4000) { // 1 << (8 +6) == irq 6
++				// Misc Interrupt
++				group = 0;
++
++				addr = intr_group_merlot[group].base_addr;
++
++				pend = READ_PEND_MERLOT(addr);
++				pend &= READ_MASK_MERLOT(addr);	// only unmasked interrupts
++				pend = 31 - rc32434_clz(pend);
++				do_IRQ(pend + GROUP0_IRQ_BASE, regs);
++			}
++			if ((ip = (cp0_cause & 0x3c00))) { // irq 2-5
++				pend = 31 - rc32434_clz(ip);
++				do_IRQ(pend - GROUP0_IRQ_BASE, regs);
++			}
++			break;
++	}
++}