Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / arch / xtensa / include / asm / vectors.h

diff --git a/kernel/arch/xtensa/include/asm/vectors.h b/kernel/arch/xtensa/include/asm/vectors.h
new file mode 100644 (file)
index 0000000..a46c53f
--- /dev/null
+++ b/kernel/arch/xtensa/include/asm/vectors.h
@@ -0,0 +1,131 @@
+/*
+ * arch/xtensa/include/asm/xchal_vaddr_remap.h
+ *
+ * Xtensa macros for MMU V3 Support. Deals with re-mapping the Virtual
+ * Memory Addresses from "Virtual == Physical" to their prevvious V2 MMU
+ * mappings (KSEG at 0xD0000000 and KIO at 0XF0000000).
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2008 - 2012 Tensilica Inc.
+ *
+ * Pete Delaney <piet@tensilica.com>
+ * Marc Gauthier <marc@tensilica.com
+ */
+
+#ifndef _XTENSA_VECTORS_H
+#define _XTENSA_VECTORS_H
+
+#include <variant/core.h>
+#include <platform/hardware.h>
+
+#define XCHAL_KIO_CACHED_VADDR         0xe0000000
+#define XCHAL_KIO_BYPASS_VADDR         0xf0000000
+#define XCHAL_KIO_DEFAULT_PADDR                0xf0000000
+#define XCHAL_KIO_SIZE                 0x10000000
+
+#if XCHAL_HAVE_PTP_MMU && XCHAL_HAVE_SPANNING_WAY && defined(CONFIG_OF)
+#define XCHAL_KIO_PADDR                        xtensa_get_kio_paddr()
+#else
+#define XCHAL_KIO_PADDR                        XCHAL_KIO_DEFAULT_PADDR
+#endif
+
+#if defined(CONFIG_MMU)
+
+/* Will Become VECBASE */
+#define VIRTUAL_MEMORY_ADDRESS         0xD0000000
+
+/* Image Virtual Start Address */
+#define KERNELOFFSET                   0xD0003000
+
+#if defined(XCHAL_HAVE_PTP_MMU) && XCHAL_HAVE_PTP_MMU && XCHAL_HAVE_SPANNING_WAY
+  /* MMU v3  - XCHAL_HAVE_PTP_MMU  == 1 */
+  #define LOAD_MEMORY_ADDRESS          0x00003000
+#else
+  /* MMU V2 -  XCHAL_HAVE_PTP_MMU  == 0 */
+  #define LOAD_MEMORY_ADDRESS          0xD0003000
+#endif
+
+#else /* !defined(CONFIG_MMU) */
+  /* MMU Not being used - Virtual == Physical */
+
+  /* VECBASE */
+  #define VIRTUAL_MEMORY_ADDRESS       (PLATFORM_DEFAULT_MEM_START + 0x2000)
+
+  /* Location of the start of the kernel text, _start */
+  #define KERNELOFFSET                 (PLATFORM_DEFAULT_MEM_START + 0x3000)
+
+  /* Loaded just above possibly live vectors */
+  #define LOAD_MEMORY_ADDRESS          (PLATFORM_DEFAULT_MEM_START + 0x3000)
+
+#endif /* CONFIG_MMU */
+
+#define XC_VADDR(offset)               (VIRTUAL_MEMORY_ADDRESS  + offset)
+
+/* Used to set VECBASE register */
+#define VECBASE_RESET_VADDR            VIRTUAL_MEMORY_ADDRESS
+
+#define RESET_VECTOR_VECOFS            (XCHAL_RESET_VECTOR_VADDR - \
+                                               VECBASE_RESET_VADDR)
+#define RESET_VECTOR_VADDR             XC_VADDR(RESET_VECTOR_VECOFS)
+
+#define RESET_VECTOR1_VECOFS           (XCHAL_RESET_VECTOR1_VADDR - \
+                                               VECBASE_RESET_VADDR)
+#define RESET_VECTOR1_VADDR            XC_VADDR(RESET_VECTOR1_VECOFS)
+
+#if defined(XCHAL_HAVE_VECBASE) && XCHAL_HAVE_VECBASE
+
+#define USER_VECTOR_VADDR              XC_VADDR(XCHAL_USER_VECOFS)
+#define KERNEL_VECTOR_VADDR            XC_VADDR(XCHAL_KERNEL_VECOFS)
+#define DOUBLEEXC_VECTOR_VADDR         XC_VADDR(XCHAL_DOUBLEEXC_VECOFS)
+#define WINDOW_VECTORS_VADDR           XC_VADDR(XCHAL_WINDOW_OF4_VECOFS)
+#define INTLEVEL2_VECTOR_VADDR         XC_VADDR(XCHAL_INTLEVEL2_VECOFS)
+#define INTLEVEL3_VECTOR_VADDR         XC_VADDR(XCHAL_INTLEVEL3_VECOFS)
+#define INTLEVEL4_VECTOR_VADDR         XC_VADDR(XCHAL_INTLEVEL4_VECOFS)
+#define INTLEVEL5_VECTOR_VADDR         XC_VADDR(XCHAL_INTLEVEL5_VECOFS)
+#define INTLEVEL6_VECTOR_VADDR         XC_VADDR(XCHAL_INTLEVEL6_VECOFS)
+
+#define DEBUG_VECTOR_VADDR             XC_VADDR(XCHAL_DEBUG_VECOFS)
+
+#define NMI_VECTOR_VADDR               XC_VADDR(XCHAL_NMI_VECOFS)
+
+#define INTLEVEL7_VECTOR_VADDR         XC_VADDR(XCHAL_INTLEVEL7_VECOFS)
+
+/*
+ * These XCHAL_* #defines from varian/core.h
+ * are not valid to use with V3 MMU. Non-XCHAL
+ * constants are defined above and should be used.
+ */
+#undef  XCHAL_VECBASE_RESET_VADDR
+#undef  XCHAL_RESET_VECTOR0_VADDR
+#undef  XCHAL_USER_VECTOR_VADDR
+#undef  XCHAL_KERNEL_VECTOR_VADDR
+#undef  XCHAL_DOUBLEEXC_VECTOR_VADDR
+#undef  XCHAL_WINDOW_VECTORS_VADDR
+#undef  XCHAL_INTLEVEL2_VECTOR_VADDR
+#undef  XCHAL_INTLEVEL3_VECTOR_VADDR
+#undef  XCHAL_INTLEVEL4_VECTOR_VADDR
+#undef  XCHAL_INTLEVEL5_VECTOR_VADDR
+#undef  XCHAL_INTLEVEL6_VECTOR_VADDR
+#undef  XCHAL_DEBUG_VECTOR_VADDR
+#undef  XCHAL_NMI_VECTOR_VADDR
+#undef  XCHAL_INTLEVEL7_VECTOR_VADDR
+
+#else
+
+#define USER_VECTOR_VADDR              XCHAL_USER_VECTOR_VADDR
+#define KERNEL_VECTOR_VADDR            XCHAL_KERNEL_VECTOR_VADDR
+#define DOUBLEEXC_VECTOR_VADDR         XCHAL_DOUBLEEXC_VECTOR_VADDR
+#define WINDOW_VECTORS_VADDR           XCHAL_WINDOW_VECTORS_VADDR
+#define INTLEVEL2_VECTOR_VADDR         XCHAL_INTLEVEL2_VECTOR_VADDR
+#define INTLEVEL3_VECTOR_VADDR         XCHAL_INTLEVEL3_VECTOR_VADDR
+#define INTLEVEL4_VECTOR_VADDR         XCHAL_INTLEVEL4_VECTOR_VADDR
+#define INTLEVEL5_VECTOR_VADDR         XCHAL_INTLEVEL5_VECTOR_VADDR
+#define INTLEVEL6_VECTOR_VADDR         XCHAL_INTLEVEL6_VECTOR_VADDR
+#define DEBUG_VECTOR_VADDR             XCHAL_DEBUG_VECTOR_VADDR
+
+#endif
+
+#endif /* _XTENSA_VECTORS_H */