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-rw-r--r--arch/mips/mti-sead3/sead3-init.c91
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
+}