Add .h files for samsung exynos 5250

Per a conversation with Stefan, these chip-dependent files are moved
to the src tree, in the manner of other chips (north and southbridge).

Change-Id: I12645ba05eb241eda200ed06cb633541a6a98119
Signed-off-by: Ronald G. Minnich <rminnich@gmail.com>
Signed-off-by: David Hendricks <dhendrix@chromium.org>
Signed-off-by: Stefan Reinauer <stepan@coresystems.de>
Reviewed-on: http://review.coreboot.org/1925
Tested-by: build bot (Jenkins)

1 files changed, 54 insertions, 0 deletions

diff --git a/src/cpu/samsung/exynos5250/exynos-cpufreq.h b/src/cpu/samsung/exynos5250/exynos-cpufreq.h
new file mode 100644
index 0000000000..1c28e77ea4
--- /dev/null
+++ b/src/cpu/samsung/exynos5250/exynos-cpufreq.h
@@ -0,0 +1,54 @@
+/*
+ * Copyright (c) 2012 Samsung Electronics Co., Ltd.
+ *      http://www.samsung.com
+ *
+ * EXYNOS - CPU frequency scaling support
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * 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.
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+/* Define various levels of ARM frequency */
+enum cpufreq_level {
+	CPU_FREQ_L200,		/* 200 MHz */
+	CPU_FREQ_L300,		/* 300 MHz */
+	CPU_FREQ_L400,		/* 400 MHz */
+	CPU_FREQ_L500,		/* 500 MHz */
+	CPU_FREQ_L600,		/* 600 MHz */
+	CPU_FREQ_L700,		/* 700 MHz */
+	CPU_FREQ_L800,		/* 800 MHz */
+	CPU_FREQ_L900,		/* 900 MHz */
+	CPU_FREQ_L1000,		/* 1000 MHz */
+	CPU_FREQ_L1100,		/* 1100 MHz */
+	CPU_FREQ_L1200,		/* 1200 MHz */
+	CPU_FREQ_L1300,		/* 1300 MHz */
+	CPU_FREQ_L1400,		/* 1400 MHz */
+	CPU_FREQ_L1500,		/* 1500 MHz */
+	CPU_FREQ_L1600,		/* 1600 MHz */
+	CPU_FREQ_L1700,		/* 1700 MHz */
+	CPU_FREQ_LCOUNT,
+};
+
+/*
+ * Initialize ARM frequency scaling
+ *
+ * @param blob  FDT blob
+ * @return	int value, 0 for success
+ */
+int exynos5250_cpufreq_init(const void *blob);
+
+/*
+ * Switch ARM frequency to new level
+ *
+ * @param new_freq_level	enum cpufreq_level, states new frequency
+ * @return			int value, 0 for success
+ */
+int exynos5250_set_frequency(enum cpufreq_level new_freq_level);