1 files changed, 91 insertions, 0 deletions
diff --git a/arch/mips/mti-sead3/sead3-init.c b/arch/mips/mti-sead3/sead3-init.c
new file mode 100644
index 000000000000..a958cad6fff6
--- /dev/null
+++ b/arch/mips/mti-sead3/sead3-init.c
@@ -0,0 +1,91 @@
+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2012 MIPS Technologies, Inc.  All rights reserved.
+ */
+#include <linux/init.h>
+#include <linux/io.h>
+
+#include <asm/bootinfo.h>
+#include <asm/cacheflush.h>
+#include <asm/traps.h>
+#include <asm/mips-boards/generic.h>
+#include <asm/mips-boards/prom.h>
+
+extern void prom_init_early_console(char port);
+
+extern char except_vec_nmi;
+extern char except_vec_ejtag_debug;
+
+int prom_argc;
+int *_prom_argv, *_prom_envp;
+
+#define prom_envp(index) ((char *)(long)_prom_envp[(index)])
+
+char *prom_getenv(char *envname)
+{
+	/*
+	 * Return a pointer to the given environment variable.
+	 * In 64-bit mode: we're using 64-bit pointers, but all pointers
+	 * in the PROM structures are only 32-bit, so we need some
+	 * workarounds, if we are running in 64-bit mode.
+	 */
+	int i, index = 0;
+
+	i = strlen(envname);
+
+	while (prom_envp(index)) {
+		if (strncmp(envname, prom_envp(index), i) == 0)
+			return prom_envp(index+1);
+		index += 2;
+	}
+
+	return NULL;
+}
+
+static void __init mips_nmi_setup(void)
+{
+	void *base;
+
+	base = cpu_has_veic ?
+		(void *)(CAC_BASE + 0xa80) :
+		(void *)(CAC_BASE + 0x380);
+	memcpy(base, &except_vec_nmi, 0x80);
+	flush_icache_range((unsigned long)base, (unsigned long)base + 0x80);
+}
+
+static void __init mips_ejtag_setup(void)
+{
+	void *base;
+
+	base = cpu_has_veic ?
+		(void *)(CAC_BASE + 0xa00) :
+		(void *)(CAC_BASE + 0x300);
+	memcpy(base, &except_vec_ejtag_debug, 0x80);
+	flush_icache_range((unsigned long)base, (unsigned long)base + 0x80);
+}
+
+void __init prom_init(void)
+{
+	prom_argc = fw_arg0;
+	_prom_argv = (int *) fw_arg1;
+	_prom_envp = (int *) fw_arg2;
+
+	board_nmi_handler_setup = mips_nmi_setup;
+	board_ejtag_handler_setup = mips_ejtag_setup;
+
+	prom_init_cmdline();
+	prom_meminit();
+#ifdef CONFIG_EARLY_PRINTK
+	if ((strstr(prom_getcmdline(), "console=ttyS0")) != NULL)
+		prom_init_early_console(0);
+	else if ((strstr(prom_getcmdline(), "console=ttyS1")) != NULL)
+		prom_init_early_console(1);
+#endif
+#ifdef CONFIG_SERIAL_8250_CONSOLE
+	if ((strstr(prom_getcmdline(), "console=")) == NULL)
+		strcat(prom_getcmdline(), " console=ttyS0,38400n8r");
+#endif
+}