[Minios-devel] [UNIKRAFT PATCHv4 18/43] plat/include: Define address offsets of boot stack and pagetable

[Wei Chen <Wei.Chen@xxxxxxx>]

If we place the boot stack and pagetable in BSS section. These
areas are not easy to be reused after changing to newstack. So
in Arm64, we want to place the pagetable and boot stack behind
the end of image.
In this case, once we change to newstack or we have new pagetable,
these two areas can be reclaimed very easy.

Signed-off-by: Wei Chen <Wei.Chen@xxxxxxx>
---
 plat/common/include/arm/arm64/cpu_defs.h | 90 ++++++++++++++++++++++++
 plat/common/include/arm/cpu_defs.h       | 47 +++++++++++++
 2 files changed, 137 insertions(+)
 create mode 100644 plat/common/include/arm/arm64/cpu_defs.h
 create mode 100644 plat/common/include/arm/cpu_defs.h

diff --git a/plat/common/include/arm/arm64/cpu_defs.h 
b/plat/common/include/arm/arm64/cpu_defs.h
new file mode 100644
index 0000000..b7eba93
--- /dev/null
+++ b/plat/common/include/arm/arm64/cpu_defs.h
@@ -0,0 +1,90 @@
+/* SPDX-License-Identifier: BSD-3-Clause */
+/*
+ * Authors: Wei Chen <wei.chen@xxxxxxx>
+ *
+ * Copyright (c) 2018, Arm Ltd. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the copyright holder nor the names of its
+ *    contributors may be used to endorse or promote products derived from
+ *    this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ * THIS HEADER MAY NOT BE EXTRACTED OR MODIFIED IN ANY WAY.
+ */
+
+#ifndef __CPU_ARM_64_DEFS_H__
+#define __CPU_ARM_64_DEFS_H__
+
+#ifndef _BITUL
+
+#ifdef __ASSEMBLY__
+
+/* Linkage for ARM */
+#define __ALIGN .align 2
+#define __ALIGN_STR ".align 2"
+
+#define ALIGN __ALIGN
+#define ALIGN_STR __ALIGN_STR
+
+#define ENTRY(name)    \
+.globl name;           \
+ALIGN;                 \
+name:
+
+#define GLOBAL(name)   \
+.globl name;           \
+name:
+
+#define END(name)      \
+.size name, .-name
+
+#define ENDPROC(name)  \
+.type name, %function; \
+END(name)
+
+#define _AC(X,Y)    X
+#define _AT(T,X)    X
+
+#else
+#define __AC(X,Y)   (X##Y)
+#define _AC(X,Y)    __AC(X,Y)
+#define _AT(T,X)    ((T)(X))
+#endif
+
+#define _BITUL(x)   (_AC(1,UL) << (x))
+#define _BITULL(x)  (_AC(1,ULL) << (x))
+
+#endif
+
+/* Define the address offset of boot stack and pagetable */
+#define PAGE_SIZE      __PAGE_SIZE
+#define PAGE_SHIFT     __PAGE_SHIFT
+#define STACK_SIZE     __STACK_SIZE
+#define PGD_PAGE_OFFSET         0
+#define PUD_PAGE_OFFSET         (PGD_PAGE_OFFSET + PAGE_SIZE)
+#define PMD_PAGE_OFFSET         (PUD_PAGE_OFFSET + PAGE_SIZE * 2)
+#define PTE_PAGE_OFFSET         (PMD_PAGE_OFFSET + PAGE_SIZE)
+#define PAGE_TABLE_SIZE         (PAGE_SIZE * 5)
+#define STACK_TOP_OFFSET (PAGE_TABLE_SIZE + STACK_SIZE)
+
+#endif /* __CPU_ARM_64_DEFS_H__ */
diff --git a/plat/common/include/arm/cpu_defs.h 
b/plat/common/include/arm/cpu_defs.h
new file mode 100644
index 0000000..cd5a436
--- /dev/null
+++ b/plat/common/include/arm/cpu_defs.h
@@ -0,0 +1,47 @@
+/* SPDX-License-Identifier: BSD-3-Clause */
+/*
+ * Authors: Wei Chen <wei.chen@xxxxxxx>
+ *
+ * Copyright (c) 2018, Arm Ltd. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the copyright holder nor the names of its
+ *    contributors may be used to endorse or promote products derived from
+ *    this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ * THIS HEADER MAY NOT BE EXTRACTED OR MODIFIED IN ANY WAY.
+ */
+
+#ifndef __PLAT_CMN_ARM_CPU_DEFS_H__
+#define __PLAT_CMN_ARM_CPU_DEFS_H__
+
+#if defined(__ARM_32__)
+#include "arm/cpu_defs.h"
+#elif defined(__ARM_64__)
+#include "arm64/cpu_defs.h"
+#else
+#error "Add cpu_defs.h for current architecture."
+#endif
+
+
+#endif /* __PLAT_CMN_ARM_CPU_DEFS_H__ */
-- 
2.17.1


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