ASR_BASE
Change-Id: Icf3719cc0afe3eeb3edc7fa80a2eb5199ca9dda1
diff --git a/marvell/linux/arch/sparc/kernel/auxio_32.c b/marvell/linux/arch/sparc/kernel/auxio_32.c
new file mode 100644
index 0000000..a32d588
--- /dev/null
+++ b/marvell/linux/arch/sparc/kernel/auxio_32.c
@@ -0,0 +1,140 @@
+// SPDX-License-Identifier: GPL-2.0
+/* auxio.c: Probing for the Sparc AUXIO register at boot time.
+ *
+ * Copyright (C) 1996 David S. Miller (davem@caip.rutgers.edu)
+ */
+
+#include <linux/stddef.h>
+#include <linux/init.h>
+#include <linux/spinlock.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
+#include <linux/export.h>
+
+#include <asm/oplib.h>
+#include <asm/io.h>
+#include <asm/auxio.h>
+#include <asm/string.h> /* memset(), Linux has no bzero() */
+#include <asm/cpu_type.h>
+
+#include "kernel.h"
+
+/* Probe and map in the Auxiliary I/O register */
+
+/* auxio_register is not static because it is referenced
+ * in entry.S::floppy_tdone
+ */
+void __iomem *auxio_register = NULL;
+static DEFINE_SPINLOCK(auxio_lock);
+
+void __init auxio_probe(void)
+{
+ phandle node, auxio_nd;
+ struct linux_prom_registers auxregs[1];
+ struct resource r;
+
+ switch (sparc_cpu_model) {
+ case sparc_leon:
+ case sun4d:
+ return;
+ default:
+ break;
+ }
+ node = prom_getchild(prom_root_node);
+ auxio_nd = prom_searchsiblings(node, "auxiliary-io");
+ if(!auxio_nd) {
+ node = prom_searchsiblings(node, "obio");
+ node = prom_getchild(node);
+ auxio_nd = prom_searchsiblings(node, "auxio");
+ if(!auxio_nd) {
+#ifdef CONFIG_PCI
+ /* There may be auxio on Ebus */
+ return;
+#else
+ if(prom_searchsiblings(node, "leds")) {
+ /* VME chassis sun4m machine, no auxio exists. */
+ return;
+ }
+ prom_printf("Cannot find auxio node, cannot continue...\n");
+ prom_halt();
+#endif
+ }
+ }
+ if(prom_getproperty(auxio_nd, "reg", (char *) auxregs, sizeof(auxregs)) <= 0)
+ return;
+ prom_apply_obio_ranges(auxregs, 0x1);
+ /* Map the register both read and write */
+ r.flags = auxregs[0].which_io & 0xF;
+ r.start = auxregs[0].phys_addr;
+ r.end = auxregs[0].phys_addr + auxregs[0].reg_size - 1;
+ auxio_register = of_ioremap(&r, 0, auxregs[0].reg_size, "auxio");
+ /* Fix the address on sun4m. */
+ if ((((unsigned long) auxregs[0].phys_addr) & 3) == 3)
+ auxio_register += (3 - ((unsigned long)auxio_register & 3));
+
+ set_auxio(AUXIO_LED, 0);
+}
+
+unsigned char get_auxio(void)
+{
+ if(auxio_register)
+ return sbus_readb(auxio_register);
+ return 0;
+}
+EXPORT_SYMBOL(get_auxio);
+
+void set_auxio(unsigned char bits_on, unsigned char bits_off)
+{
+ unsigned char regval;
+ unsigned long flags;
+ spin_lock_irqsave(&auxio_lock, flags);
+ switch (sparc_cpu_model) {
+ case sun4m:
+ if(!auxio_register)
+ break; /* VME chassis sun4m, no auxio. */
+ regval = sbus_readb(auxio_register);
+ sbus_writeb(((regval | bits_on) & ~bits_off) | AUXIO_ORMEIN4M,
+ auxio_register);
+ break;
+ case sun4d:
+ break;
+ default:
+ panic("Can't set AUXIO register on this machine.");
+ }
+ spin_unlock_irqrestore(&auxio_lock, flags);
+}
+EXPORT_SYMBOL(set_auxio);
+
+/* sun4m power control register (AUXIO2) */
+
+volatile u8 __iomem *auxio_power_register = NULL;
+
+void __init auxio_power_probe(void)
+{
+ struct linux_prom_registers regs;
+ phandle node;
+ struct resource r;
+
+ /* Attempt to find the sun4m power control node. */
+ node = prom_getchild(prom_root_node);
+ node = prom_searchsiblings(node, "obio");
+ node = prom_getchild(node);
+ node = prom_searchsiblings(node, "power");
+ if (node == 0 || (s32)node == -1)
+ return;
+
+ /* Map the power control register. */
+ if (prom_getproperty(node, "reg", (char *)®s, sizeof(regs)) <= 0)
+ return;
+ prom_apply_obio_ranges(®s, 1);
+ memset(&r, 0, sizeof(r));
+ r.flags = regs.which_io & 0xF;
+ r.start = regs.phys_addr;
+ r.end = regs.phys_addr + regs.reg_size - 1;
+ auxio_power_register =
+ (u8 __iomem *)of_ioremap(&r, 0, regs.reg_size, "auxpower");
+
+ /* Display a quick message on the console. */
+ if (auxio_power_register)
+ printk(KERN_INFO "Power off control detected.\n");
+}