i.MX: Add an i.MX25 specific CCM class/instance

With this CCM, i.MX25 timer is accurate with "real world time".

Signed-off-by: Jean-Christophe Dubois <jcd@tribudubois.net>
Message-id: 2c0cf90be767bfc8520661eca891ab22c61f18fe.1449528242.git.jcd@tribudubois.net
Reviewed-by Peter Crosthwaite <crosthwaite.peter@gmail.com>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

include/hw/misc/imx25_ccm.h

@@ -0,0 +1,79 @@
+/*
+ * IMX25 Clock Control Module
+ *
+ * Copyright (C) 2012 NICTA
+ * Updated by Jean-Christophe Dubois <jcd@tribudubois.net>
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or later.
+ * See the COPYING file in the top-level directory.
+ */
+
+#ifndef IMX25_CCM_H
+#define IMX25_CCM_H
+
+#include "hw/misc/imx_ccm.h"
+
+#define IMX25_CCM_MPCTL_REG  0
+#define IMX25_CCM_UPCTL_REG  1
+#define IMX25_CCM_CCTL_REG   2
+#define IMX25_CCM_CGCR0_REG  3
+#define IMX25_CCM_CGCR1_REG  4
+#define IMX25_CCM_CGCR2_REG  5
+#define IMX25_CCM_PCDR0_REG  6
+#define IMX25_CCM_PCDR1_REG  7
+#define IMX25_CCM_PCDR2_REG  8
+#define IMX25_CCM_PCDR3_REG  9
+#define IMX25_CCM_RCSR_REG   10
+#define IMX25_CCM_CRDR_REG   11
+#define IMX25_CCM_DCVR0_REG  12
+#define IMX25_CCM_DCVR1_REG  13
+#define IMX25_CCM_DCVR2_REG  14
+#define IMX25_CCM_DCVR3_REG  15
+#define IMX25_CCM_LTR0_REG   16
+#define IMX25_CCM_LTR1_REG   17
+#define IMX25_CCM_LTR2_REG   18
+#define IMX25_CCM_LTR3_REG   19
+#define IMX25_CCM_LTBR0_REG  20
+#define IMX25_CCM_LTBR1_REG  21
+#define IMX25_CCM_PMCR0_REG  22
+#define IMX25_CCM_PMCR1_REG  23
+#define IMX25_CCM_PMCR2_REG  24
+#define IMX25_CCM_MCR_REG    25
+#define IMX25_CCM_LPIMR0_REG 26
+#define IMX25_CCM_LPIMR1_REG 27
+#define IMX25_CCM_MAX_REG    28
+
+/* CCTL */
+#define CCTL_ARM_CLK_DIV_SHIFT (30)
+#define CCTL_ARM_CLK_DIV_MASK  (0x3)
+#define CCTL_AHB_CLK_DIV_SHIFT (28)
+#define CCTL_AHB_CLK_DIV_MASK  (0x3)
+#define CCTL_MPLL_BYPASS_SHIFT (22)
+#define CCTL_MPLL_BYPASS_MASK  (0x1)
+#define CCTL_USB_DIV_SHIFT     (16)
+#define CCTL_USB_DIV_MASK      (0x3F)
+#define CCTL_ARM_SRC_SHIFT     (13)
+#define CCTL_ARM_SRC_MASK      (0x1)
+#define CCTL_UPLL_DIS_SHIFT    (23)
+#define CCTL_UPLL_DIS_MASK     (0x1)
+
+#define EXTRACT(value, name) (((value) >> CCTL_##name##_SHIFT) \
+                              & CCTL_##name##_MASK)
+#define INSERT(value, name) (((value) & CCTL_##name##_MASK) << \
+                             CCTL_##name##_SHIFT)
+
+#define TYPE_IMX25_CCM "imx25.ccm"
+#define IMX25_CCM(obj) OBJECT_CHECK(IMX25CCMState, (obj), TYPE_IMX25_CCM)
+
+typedef struct IMX25CCMState {
+    /* <private> */
+    IMXCCMState parent_obj;
+
+    /* <public> */
+    MemoryRegion iomem;
+
+    uint32_t reg[IMX25_CCM_MAX_REG];
+
+} IMX25CCMState;
+
+#endif /* IMX25_CCM_H */