ASR_BASE
Change-Id: Icf3719cc0afe3eeb3edc7fa80a2eb5199ca9dda1
diff --git a/marvell/uboot/arch/x86/lib/interrupts.c b/marvell/uboot/arch/x86/lib/interrupts.c
new file mode 100644
index 0000000..6bb22d2
--- /dev/null
+++ b/marvell/uboot/arch/x86/lib/interrupts.c
@@ -0,0 +1,145 @@
+/*
+ * (C) Copyright 2009
+ * Graeme Russ, <graeme.russ@gmail.com>
+ *
+ * (C) Copyright 2007
+ * Daniel Hellstrom, Gaisler Research, <daniel@gaisler.com>
+ *
+ * (C) Copyright 2006
+ * Detlev Zundel, DENX Software Engineering, <dzu@denx.de>
+ *
+ * (C) Copyright -2003
+ * Wolfgang Denk, DENX Software Engineering, <wd@denx.de>
+ *
+ * (C) Copyright 2002
+ * Daniel Engström, Omicron Ceti AB, <daniel@omicron.se>
+ *
+ * (C) Copyright 2001
+ * Josh Huber, Mission Critical Linux, Inc, <huber@mclx.com>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+/*
+ * This file contains the high-level API for the interrupt sub-system
+ * of the x86 port of U-Boot. Most of the functionality has been
+ * shamelessly stolen from the leon2 / leon3 ports of U-Boot.
+ * Daniel Hellstrom, Detlev Zundel, Wolfgang Denk and Josh Huber are
+ * credited for the corresponding work on those ports. The original
+ * interrupt handling routines for the x86 port were written by
+ * Daniel Engström
+ */
+
+#include <common.h>
+#include <asm/interrupt.h>
+
+struct irq_action {
+ interrupt_handler_t *handler;
+ void *arg;
+ unsigned int count;
+};
+
+static struct irq_action irq_handlers[CONFIG_SYS_NUM_IRQS] = { {0} };
+static int spurious_irq_cnt;
+static int spurious_irq;
+
+void irq_install_handler(int irq, interrupt_handler_t *handler, void *arg)
+{
+ int status;
+
+ if (irq < 0 || irq >= CONFIG_SYS_NUM_IRQS) {
+ printf("irq_install_handler: bad irq number %d\n", irq);
+ return;
+ }
+
+ if (irq_handlers[irq].handler != NULL)
+ printf("irq_install_handler: 0x%08lx replacing 0x%08lx\n",
+ (ulong) handler,
+ (ulong) irq_handlers[irq].handler);
+
+ status = disable_interrupts();
+
+ irq_handlers[irq].handler = handler;
+ irq_handlers[irq].arg = arg;
+ irq_handlers[irq].count = 0;
+
+ unmask_irq(irq);
+
+ if (status)
+ enable_interrupts();
+
+ return;
+}
+
+void irq_free_handler(int irq)
+{
+ int status;
+
+ if (irq < 0 || irq >= CONFIG_SYS_NUM_IRQS) {
+ printf("irq_free_handler: bad irq number %d\n", irq);
+ return;
+ }
+
+ status = disable_interrupts();
+
+ mask_irq(irq);
+
+ irq_handlers[irq].handler = NULL;
+ irq_handlers[irq].arg = NULL;
+
+ if (status)
+ enable_interrupts();
+
+ return;
+}
+
+void do_irq(int hw_irq)
+{
+ int irq = hw_irq - 0x20;
+
+ if (irq < 0 || irq >= CONFIG_SYS_NUM_IRQS) {
+ printf("do_irq: bad irq number %d\n", irq);
+ return;
+ }
+
+ if (irq_handlers[irq].handler) {
+ mask_irq(irq);
+
+ irq_handlers[irq].handler(irq_handlers[irq].arg);
+ irq_handlers[irq].count++;
+
+ unmask_irq(irq);
+ specific_eoi(irq);
+
+ } else {
+ if ((irq & 7) != 7) {
+ spurious_irq_cnt++;
+ spurious_irq = irq;
+ }
+ }
+}
+
+#if defined(CONFIG_CMD_IRQ)
+int do_irqinfo(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
+{
+ int irq;
+
+ printf("Spurious IRQ: %u, last unknown IRQ: %d\n",
+ spurious_irq_cnt, spurious_irq);
+
+ printf("Interrupt-Information:\n");
+ printf("Nr Routine Arg Count\n");
+
+ for (irq = 0; irq <= CONFIG_SYS_NUM_IRQS; irq++) {
+ if (irq_handlers[irq].handler != NULL) {
+ printf("%02d %08lx %08lx %d\n",
+ irq,
+ (ulong)irq_handlers[irq].handler,
+ (ulong)irq_handlers[irq].arg,
+ irq_handlers[irq].count);
+ }
+ }
+
+ return 0;
+}
+#endif