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Diffstat (limited to 'arch/mips/lantiq/xway/prom-xway.c')
-rw-r--r--arch/mips/lantiq/xway/prom-xway.c54
1 files changed, 54 insertions, 0 deletions
diff --git a/arch/mips/lantiq/xway/prom-xway.c b/arch/mips/lantiq/xway/prom-xway.c
new file mode 100644
index 000000000000..1686692ac24d
--- /dev/null
+++ b/arch/mips/lantiq/xway/prom-xway.c
@@ -0,0 +1,54 @@
+/*
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published
+ * by the Free Software Foundation.
+ *
+ * Copyright (C) 2010 John Crispin <blogic@openwrt.org>
+ */
+
+#include <linux/module.h>
+#include <linux/clk.h>
+#include <asm/bootinfo.h>
+#include <asm/time.h>
+
+#include <lantiq_soc.h>
+
+#include "../prom.h"
+
+#define SOC_DANUBE "Danube"
+#define SOC_TWINPASS "Twinpass"
+#define SOC_AR9 "AR9"
+
+#define PART_SHIFT 12
+#define PART_MASK 0x0FFFFFFF
+#define REV_SHIFT 28
+#define REV_MASK 0xF0000000
+
+void __init ltq_soc_detect(struct ltq_soc_info *i)
+{
+ i->partnum = (ltq_r32(LTQ_MPS_CHIPID) & PART_MASK) >> PART_SHIFT;
+ i->rev = (ltq_r32(LTQ_MPS_CHIPID) & REV_MASK) >> REV_SHIFT;
+ switch (i->partnum) {
+ case SOC_ID_DANUBE1:
+ case SOC_ID_DANUBE2:
+ i->name = SOC_DANUBE;
+ i->type = SOC_TYPE_DANUBE;
+ break;
+
+ case SOC_ID_TWINPASS:
+ i->name = SOC_TWINPASS;
+ i->type = SOC_TYPE_DANUBE;
+ break;
+
+ case SOC_ID_ARX188:
+ case SOC_ID_ARX168:
+ case SOC_ID_ARX182:
+ i->name = SOC_AR9;
+ i->type = SOC_TYPE_AR9;
+ break;
+
+ default:
+ unreachable();
+ break;
+ }
+}