[src/trunk]: src/sys/arch/evbarm/fdt Provide some KVA layout #defines in arm3...

[skrll <skrll%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/07570e974655
branches:  trunk
changeset: 935662:07570e974655
user:      skrll <skrll%NetBSD.org@localhost>
date:      Wed Jul 08 09:50:45 2020 +0000

description:
Provide some KVA layout #defines in arm32/vmparam.h and simplify
fdt/platform.h as a nice side effect

diffstat:

 sys/arch/arm/include/arm32/vmparam.h |  29 ++++++++++++++++++++++++++++-
 sys/arch/evbarm/fdt/platform.h       |  20 ++++----------------
 2 files changed, 32 insertions(+), 17 deletions(-)

diffs (80 lines):

diff -r 44685bfde15d -r 07570e974655 sys/arch/arm/include/arm32/vmparam.h
--- a/sys/arch/arm/include/arm32/vmparam.h      Wed Jul 08 08:20:05 2020 +0000
+++ b/sys/arch/arm/include/arm32/vmparam.h      Wed Jul 08 09:50:45 2020 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: vmparam.h,v 1.48 2020/07/08 07:59:49 skrll Exp $       */
+/*     $NetBSD: vmparam.h,v 1.49 2020/07/08 09:50:45 skrll Exp $       */
 
 /*
  * Copyright (c) 2001, 2002 Wasabi Systems, Inc.
@@ -94,4 +94,31 @@
 #define        VM_MIN_KERNEL_ADDRESS   ((vaddr_t) KERNEL_BASE)
 #define        VM_MAX_KERNEL_ADDRESS   ((vaddr_t) -(PAGE_SIZE+1))
 
+#ifdef ARM_MMU_EXTENDED
+/*
+ * kernel virtual space layout without direct map (common case)
+ *
+ *   0x8000_0000 -  256MB kernel text/data/bss
+ *   0x9000_0000 - 1536MB Kernel VM Space
+ *   0xf000_0000 -  256MB IO
+ *
+ * kernel virtual space layout with direct map (1GB limited)
+ *   0x8000_0000 - 1024MB kernel text/data/bss and direct map start
+ *   0xc000_0000 -  768MB Kernel VM Space
+ *   0xf000_0000 -  256MB IO
+ *
+ */
+#define VM_KERNEL_IO_ADDRESS   0xf0000000
+#define VM_KERNEL_IO_SIZE      (VM_MAX_KERNEL_ADDRESS - VM_KERNEL_IO_ADDRESS)
+
+#ifdef __HAVE_MM_MD_DIRECT_MAPPED_PHYS
+#define KERNEL_VM_BASE         0xc0000000
+#else
+#define KERNEL_VM_BASE         0x90000000
+#endif
+
+#define KERNEL_VM_SIZE         (KERNEL_IO_VBASE - KERNEL_VM_BASE)
+
+#endif
+
 #endif /* _ARM_ARM32_VMPARAM_H_ */
diff -r 44685bfde15d -r 07570e974655 sys/arch/evbarm/fdt/platform.h
--- a/sys/arch/evbarm/fdt/platform.h    Wed Jul 08 08:20:05 2020 +0000
+++ b/sys/arch/evbarm/fdt/platform.h    Wed Jul 08 09:50:45 2020 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: platform.h,v 1.5 2019/01/21 07:49:45 skrll Exp $ */
+/* $NetBSD: platform.h,v 1.6 2020/07/08 09:50:45 skrll Exp $ */
 
 /*-
  * Copyright (c) 2015-2017 Jared McNeill <jmcneill%invisible.ca@localhost>
@@ -33,26 +33,14 @@
 void fdt_add_reserved_memory_range(uint64_t, uint64_t);
 #endif
 
-#ifdef __aarch64__
+#define KERNEL_IO_VBASE                VM_KERNEL_IO_ADDRESS
+#define KERNEL_IO_VSIZE                (KERNEL_IO_VBASE - VM_MAX_KERNEL_ADDRESS)
 
-#define KERNEL_IO_VBASE                VM_KERNEL_IO_ADDRESS
+#ifdef __aarch64__
 
 #define KERNEL_VM_BASE         VM_MIN_KERNEL_ADDRESS
 #define KERNEL_VM_SIZE         (VM_MAX_KERNEL_ADDRESS - VM_MIN_KERNEL_ADDRESS)
 
-#else /* __aarch64__ */
-
-#define KERNEL_IO_VBASE                0xf0000000
-#define KERNEL_IO_VSIZE                (KERNEL_IO_VBASE - VM_MAX_KERNEL_ADDRESS)
-
-#ifdef __HAVE_MM_MD_DIRECT_MAPPED_PHYS
-#define KERNEL_VM_BASE         0xc0000000
-#else
-#define KERNEL_VM_BASE         0x90000000
-#endif
-
-#define KERNEL_VM_SIZE         (KERNEL_IO_VBASE - KERNEL_VM_BASE)
-
 #endif /* !__aarch64 */
 
 #endif /* _EVBARM_FDT_PLATFORM_H */