patch-2.4.10 linux/arch/mips/gt64120/momenco_ocelot/prom.c

• Lines: 71
• Date: Sun Sep 9 10:43:01 2001
• Orig file: v2.4.9/linux/arch/mips/gt64120/momenco_ocelot/prom.c
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.4.9/linux/arch/mips/gt64120/momenco_ocelot/prom.c linux/arch/mips/gt64120/momenco_ocelot/prom.c
@@ -0,0 +1,70 @@
+/*
+ * Copyright 2001 MontaVista Software Inc.
+ * Author: jsun@mvista.com or jsun@junsun.net
+ *
+ * This program is free software; you can redistribute  it and/or modify it
+ * under  the terms of  the GNU General  Public License as published by the
+ * Free Software Foundation;  either version 2 of the  License, or (at your
+ * option) any later version.
+ */
+#include <linux/init.h>
+#include <linux/mm.h>
+#include <linux/sched.h>
+#include <linux/bootmem.h>
+
+#include <asm/addrspace.h>
+#include <asm/bootinfo.h>
+
+#define PLD_BASE	0xbc000000
+
+#define REV             0x0     /* Board Assembly Revision */
+#define PLD1ID          0x1     /* PLD 1 ID */
+#define PLD2ID          0x2     /* PLD 2 ID */
+#define RESET_STAT      0x3     /* Reset Status Register */
+#define BOARD_STAT      0x4     /* Board Status Register */
+#define CPCI_ID         0x5     /* Compact PCI ID Register */
+#define CONTROL         0x8     /* Control Register */
+#define CPU_EEPROM      0x9     /* CPU Configuration EEPROM Register */
+#define INTMASK         0xA     /* Interrupt Mask Register */
+#define INTSTAT         0xB     /* Interrupt Status Register */
+#define INTSET          0xC     /* Interrupt Set Register */
+#define INTCLR          0xD     /* Interrupt Clear Register */
+
+#define PLD_REG(x)	((uint8_t*)(PLD_BASE+(x)))
+
+char arcs_cmdline[COMMAND_LINE_SIZE];
+
+/* [jsun@junsun.net] PMON passes arguments in C main() style */
+void __init prom_init(int argc, const char **arg)
+{
+	int i;
+
+	/* arg[0] is "g", the rest is boot parameters */
+	arcs_cmdline[0] = '\0';
+	for (i = 1; i < argc; i++) {
+		if (strlen(arcs_cmdline) + strlen(arg[i] + 1)
+		    >= sizeof(arcs_cmdline))
+			break;
+		strcat(arcs_cmdline, arg[i]);
+		strcat(arcs_cmdline, " ");
+	}
+
+	mips_machgroup = MACH_GROUP_MOMENCO;
+	mips_machtype = MACH_MOMENCO_OCELOT;
+
+	/* turn off the Bit Error LED, which comes on automatically
+	 * at power-up reset */
+	*PLD_REG(INTCLR) = 0x80;
+
+	/* All the boards have at least 64MiB. If there's more, we
+	   detect and register it later */
+	add_memory_region(0, 64 << 20, BOOT_MEM_RAM);
+}
+
+void __init prom_free_prom_memory(void)
+{
+}
+
+void __init prom_fixup_mem_map(unsigned long start, unsigned long end)
+{
+}