Tegra2: implement Warmboot code and lp0_vec

arch/arm/include/asm/arch-tegra2/nv_drf_asm.h

+/*
+ * (C) Copyright 2010
+ * NVIDIA Corporation <www.nvidia.com>
+ *
+ * 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 as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * 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
+ */
+
+#ifndef INCLUDED_NVRM_DRF_ASM_H
+#define INCLUDED_NVRM_DRF_ASM_H
+
+/**
+ *  @defgroup nvrm_drf RM DRF Macros
+ *
+ *  @ingroup nvddk_rm
+ *
+ * The following suite of macros are used from assembly language code for
+ * generating values to write into hardware registers, or for extracting
+ * fields from read registers. These macros are less sophistocated than
+ * C counterparts because the assembler does not understand the C ternary
+ * operator. In particular, depending on the version of the assember, there
+ * may not be common C-style aliases to the native assembler operators. To
+ * accomodate the lowest common denominator, only the native assember operators
+ * (e.g., :SHL:, :AND:, etc.) are used.
+ */
+
+/**
+ *  The default implementation of _MK_ENUM_CONST in the spec-generated headers
+ *  appends the C unsigned long suffix operator (UL). This is incompatible with
+ *  the assembler. Force _MK_ENUM_CONST to define just a plain constant.
+ */
+#if defined(_MK_ENUM_CONST)
+#undef  _MK_ENUM_CONST
+#define _MK_ENUM_CONST(_constant_) (_constant_)
+#endif
+
+/*-----------------------------------------------------------------------------
+ * Abstract logical operations because some ARM assemblers don't
+ * understand C operators.
+ *-----------------------------------------------------------------------------

[Tom Warren, 2010/11/12 00:12:40]

Nor should they - write assembler code in assembly!

Please fix this, also. There's no way we should be having any reference to MS C
in U-Boot or ARM code!

[yelin, 2010/11/15 23:21:21]

Done.

+ */
+
+#if !defined(_AND_)
+#if defined(_MSC_VER)       /* Microsoft compiler/assember */
+#define _AND_ :AND:
+#else
+#define _AND_ &
+#endif
+#endif
+
+#if !defined(_OR_)
+#if defined(_MSC_VER)       /* Microsoft compiler/assember */
+#define _OR_ :OR:
+#else
+#define _OR_ |
+#endif
+#endif
+
+#if !defined(_SHL_)
+#if defined(_MSC_VER)       /* Microsoft compiler/assember */
+#define _SHL_ :SHL:
+#else
+#define _SHL_ <<
+#endif
+#endif
+
+
+/** NV_DRF_OFFSET - Get a register offset
+
+    @ingroup nvrm_drf
+
+    @param d register domain (hardware block)
+    @param r register name
+ */
+#define NV_DRF_OFFSET(d,r)  (d##_##r##_0)
+
+/** NV_DRF_SHIFT - Get the shift count of a field
+
+    @ingroup nvrm_drf
+
+    @param d register domain (hardware block)
+    @param r register name
+    @param f register field
+ */
+#define NV_DRF_SHIFT(d,r,f) (d##_##r##_0_##f##_SHIFT)
+
+/** NV_DRF_MASK - Get the mask value of a field
+
+    @ingroup nvrm_drf
+
+    @param d register domain (hardware block)
+    @param r register name
+    @param f register field
+ */
+#define NV_DRF_MASK(d,r,f)  ((d##_##r##_0_##f##_DEFAULT_MASK) _SHL_ (d##_##r##_0_##f##_SHIFT))
+
+/** NV_DRF_DEF - define a new register value.
+
+    @ingroup nvrm_drf
+
+    @param d register domain (hardware block)
+    @param r register name
+    @param f register field
+    @param c defined value for the field
+ */
+#define NV_DRF_DEF(d,r,f,c) \
+    ((d##_##r##_0_##f##_##c) _SHL_ (d##_##r##_0_##f##_SHIFT))
+
+/** NV_DRF_NUM - define a new register value.
+
+    @ingroup nvrm_drf
+
+    @param d register domain (hardware block)
+    @param r register name
+    @param f register field
+    @param n numeric value for the field
+ */
+#define NV_DRF_NUM(d,r,f,n) \
+    ((((n) _AND_ (d##_##r##_0_##f##_DEFAULT_MASK))) _SHL_ \
+        (d##_##r##_0_##f##_SHIFT))
+
+/** NV_RESETVAL - get the reset value for a register.
+
+    @ingroup nvrm_drf
+
+    @param d register domain (hardware block)
+    @param r register name
+ */
+#define NV_RESETVAL(d,r)    (d##_##r##_0_RESET_VAL)
+
+#endif /* INCLUDED_NVRM_DRF_ASM_H */