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From: Penny Zheng <Penny.Zheng@arm.com>
To: xen-devel@lists.xenproject.org
Cc: wei.chen@arm.com, Stefano Stabellini <sstabellini@kernel.org>,
	Julien Grall <julien@xen.org>,
	Bertrand Marquis <bertrand.marquis@arm.com>,
	Volodymyr Babchuk <Volodymyr_Babchuk@epam.com>
Subject: [PATCH v2 10/40] xen/arm: split MMU and MPU config files from config.h
Date: Fri, 13 Jan 2023 13:28:43 +0800	[thread overview]
Message-ID: <20230113052914.3845596-11-Penny.Zheng@arm.com> (raw)
In-Reply-To: <20230113052914.3845596-1-Penny.Zheng@arm.com>

From: Wei Chen <wei.chen@arm.com>

Xen defines some global configuration macros for Arm in
config.h. We still want to use it for Armv8-R systems, but
there are some address related macros that are defined for
MMU systems. These macros will not be used by MPU systems,
Adding ifdefery with CONFIG_HAS_MPU to gate these macros
will result in a messy and hard-to-read/maintain code.

So we keep some common definitions still in config.h, but
move virtual address related definitions to a new file -
config_mmu.h. And use a new file config_mpu.h to store
definitions for MPU systems. To avoid spreading #ifdef
everywhere, we keep the same definition names for MPU
systems, like XEN_VIRT_START and HYPERVISOR_VIRT_START,
but the definition contents are MPU specific.

Signed-off-by: Wei Chen <wei.chen@arm.com>
---
v1 -> v2:
1. Remove duplicated FIXMAP definitions from config_mmu.h
---
 xen/arch/arm/include/asm/config.h     | 103 +++--------------------
 xen/arch/arm/include/asm/config_mmu.h | 112 ++++++++++++++++++++++++++
 xen/arch/arm/include/asm/config_mpu.h |  25 ++++++
 3 files changed, 147 insertions(+), 93 deletions(-)
 create mode 100644 xen/arch/arm/include/asm/config_mmu.h
 create mode 100644 xen/arch/arm/include/asm/config_mpu.h

diff --git a/xen/arch/arm/include/asm/config.h b/xen/arch/arm/include/asm/config.h
index 25a625ff08..86d8142959 100644
--- a/xen/arch/arm/include/asm/config.h
+++ b/xen/arch/arm/include/asm/config.h
@@ -48,6 +48,12 @@
 
 #define INVALID_VCPU_ID MAX_VIRT_CPUS
 
+/* Used for calculating PDX */
+#ifdef CONFIG_ARM_64
+#define FRAMETABLE_SIZE        GB(32)
+#define FRAMETABLE_NR          (FRAMETABLE_SIZE / sizeof(*frame_table))
+#endif
+
 #define __LINUX_ARM_ARCH__ 7
 #define CONFIG_AEABI
 
@@ -71,99 +77,10 @@
 #include <xen/const.h>
 #include <xen/page-size.h>
 
-/*
- * Common ARM32 and ARM64 layout:
- *   0  -   2M   Unmapped
- *   2M -   4M   Xen text, data, bss
- *   4M -   6M   Fixmap: special-purpose 4K mapping slots
- *   6M -  10M   Early boot mapping of FDT
- *   10M - 12M   Livepatch vmap (if compiled in)
- *
- * ARM32 layout:
- *   0  -  12M   <COMMON>
- *
- *  32M - 128M   Frametable: 24 bytes per page for 16GB of RAM
- * 256M -   1G   VMAP: ioremap and early_ioremap use this virtual address
- *                    space
- *
- *   1G -   2G   Xenheap: always-mapped memory
- *   2G -   4G   Domheap: on-demand-mapped
- *
- * ARM64 layout:
- * 0x0000000000000000 - 0x0000007fffffffff (512GB, L0 slot [0])
- *   0  -  12M   <COMMON>
- *
- *   1G -   2G   VMAP: ioremap and early_ioremap
- *
- *  32G -  64G   Frametable: 24 bytes per page for 5.3TB of RAM
- *
- * 0x0000008000000000 - 0x00007fffffffffff (127.5TB, L0 slots [1..255])
- *  Unused
- *
- * 0x0000800000000000 - 0x000084ffffffffff (5TB, L0 slots [256..265])
- *  1:1 mapping of RAM
- *
- * 0x0000850000000000 - 0x0000ffffffffffff (123TB, L0 slots [266..511])
- *  Unused
- */
-
-#define XEN_VIRT_START         _AT(vaddr_t,0x00200000)
-#define FIXMAP_ADDR(n)        (_AT(vaddr_t,0x00400000) + (n) * PAGE_SIZE)
-
-#define BOOT_FDT_VIRT_START    _AT(vaddr_t,0x00600000)
-#define BOOT_FDT_VIRT_SIZE     _AT(vaddr_t, MB(4))
-
-#ifdef CONFIG_LIVEPATCH
-#define LIVEPATCH_VMAP_START   _AT(vaddr_t,0x00a00000)
-#define LIVEPATCH_VMAP_SIZE    _AT(vaddr_t, MB(2))
-#endif
-
-#define HYPERVISOR_VIRT_START  XEN_VIRT_START
-
-#ifdef CONFIG_ARM_32
-
-#define CONFIG_SEPARATE_XENHEAP 1
-
-#define FRAMETABLE_VIRT_START  _AT(vaddr_t,0x02000000)
-#define FRAMETABLE_SIZE        MB(128-32)
-#define FRAMETABLE_NR          (FRAMETABLE_SIZE / sizeof(*frame_table))
-#define FRAMETABLE_VIRT_END    (FRAMETABLE_VIRT_START + FRAMETABLE_SIZE - 1)
-
-#define VMAP_VIRT_START        _AT(vaddr_t,0x10000000)
-#define VMAP_VIRT_SIZE         _AT(vaddr_t, GB(1) - MB(256))
-
-#define XENHEAP_VIRT_START     _AT(vaddr_t,0x40000000)
-#define XENHEAP_VIRT_SIZE      _AT(vaddr_t, GB(1))
-
-#define DOMHEAP_VIRT_START     _AT(vaddr_t,0x80000000)
-#define DOMHEAP_VIRT_SIZE      _AT(vaddr_t, GB(2))
-
-#define DOMHEAP_ENTRIES        1024  /* 1024 2MB mapping slots */
-
-/* Number of domheap pagetable pages required at the second level (2MB mappings) */
-#define DOMHEAP_SECOND_PAGES (DOMHEAP_VIRT_SIZE >> FIRST_SHIFT)
-
-#else /* ARM_64 */
-
-#define SLOT0_ENTRY_BITS  39
-#define SLOT0(slot) (_AT(vaddr_t,slot) << SLOT0_ENTRY_BITS)
-#define SLOT0_ENTRY_SIZE  SLOT0(1)
-
-#define VMAP_VIRT_START  GB(1)
-#define VMAP_VIRT_SIZE   GB(1)
-
-#define FRAMETABLE_VIRT_START  GB(32)
-#define FRAMETABLE_SIZE        GB(32)
-#define FRAMETABLE_NR          (FRAMETABLE_SIZE / sizeof(*frame_table))
-
-#define DIRECTMAP_VIRT_START   SLOT0(256)
-#define DIRECTMAP_SIZE         (SLOT0_ENTRY_SIZE * (265-256))
-#define DIRECTMAP_VIRT_END     (DIRECTMAP_VIRT_START + DIRECTMAP_SIZE - 1)
-
-#define XENHEAP_VIRT_START     directmap_virt_start
-
-#define HYPERVISOR_VIRT_END    DIRECTMAP_VIRT_END
-
+#ifdef CONFIG_HAS_MPU
+#include <asm/config_mpu.h>
+#else
+#include <asm/config_mmu.h>
 #endif
 
 #define NR_hypercalls 64
diff --git a/xen/arch/arm/include/asm/config_mmu.h b/xen/arch/arm/include/asm/config_mmu.h
new file mode 100644
index 0000000000..c12ff25cf4
--- /dev/null
+++ b/xen/arch/arm/include/asm/config_mmu.h
@@ -0,0 +1,112 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/******************************************************************************
+ * config_mmu.h
+ *
+ * A Linux-style configuration list, only can be included by config.h
+ */
+
+#ifndef __ARM_CONFIG_MMU_H__
+#define __ARM_CONFIG_MMU_H__
+
+/*
+ * Common ARM32 and ARM64 layout:
+ *   0  -   2M   Unmapped
+ *   2M -   4M   Xen text, data, bss
+ *   4M -   6M   Fixmap: special-purpose 4K mapping slots
+ *   6M -  10M   Early boot mapping of FDT
+ *   10M - 12M   Livepatch vmap (if compiled in)
+ *
+ * ARM32 layout:
+ *   0  -  12M   <COMMON>
+ *
+ *  32M - 128M   Frametable: 24 bytes per page for 16GB of RAM
+ * 256M -   1G   VMAP: ioremap and early_ioremap use this virtual address
+ *                    space
+ *
+ *   1G -   2G   Xenheap: always-mapped memory
+ *   2G -   4G   Domheap: on-demand-mapped
+ *
+ * ARM64 layout:
+ * 0x0000000000000000 - 0x0000007fffffffff (512GB, L0 slot [0])
+ *   0  -  12M   <COMMON>
+ *
+ *   1G -   2G   VMAP: ioremap and early_ioremap
+ *
+ *  32G -  64G   Frametable: 24 bytes per page for 5.3TB of RAM
+ *
+ * 0x0000008000000000 - 0x00007fffffffffff (127.5TB, L0 slots [1..255])
+ *  Unused
+ *
+ * 0x0000800000000000 - 0x000084ffffffffff (5TB, L0 slots [256..265])
+ *  1:1 mapping of RAM
+ *
+ * 0x0000850000000000 - 0x0000ffffffffffff (123TB, L0 slots [266..511])
+ *  Unused
+ */
+
+#define XEN_VIRT_START         _AT(vaddr_t,0x00200000)
+#define FIXMAP_ADDR(n)        (_AT(vaddr_t,0x00400000) + (n) * PAGE_SIZE)
+
+#define BOOT_FDT_VIRT_START    _AT(vaddr_t,0x00600000)
+#define BOOT_FDT_VIRT_SIZE     _AT(vaddr_t, MB(4))
+
+#ifdef CONFIG_LIVEPATCH
+#define LIVEPATCH_VMAP_START   _AT(vaddr_t,0x00a00000)
+#define LIVEPATCH_VMAP_SIZE    _AT(vaddr_t, MB(2))
+#endif
+
+#define HYPERVISOR_VIRT_START  XEN_VIRT_START
+
+#ifdef CONFIG_ARM_32
+
+#define CONFIG_SEPARATE_XENHEAP 1
+
+#define FRAMETABLE_VIRT_START  _AT(vaddr_t,0x02000000)
+#define FRAMETABLE_SIZE        MB(128-32)
+#define FRAMETABLE_NR          (FRAMETABLE_SIZE / sizeof(*frame_table))
+#define FRAMETABLE_VIRT_END    (FRAMETABLE_VIRT_START + FRAMETABLE_SIZE - 1)
+
+#define VMAP_VIRT_START        _AT(vaddr_t,0x10000000)
+#define VMAP_VIRT_SIZE         _AT(vaddr_t, GB(1) - MB(256))
+
+#define XENHEAP_VIRT_START     _AT(vaddr_t,0x40000000)
+#define XENHEAP_VIRT_SIZE      _AT(vaddr_t, GB(1))
+
+#define DOMHEAP_VIRT_START     _AT(vaddr_t,0x80000000)
+#define DOMHEAP_VIRT_SIZE      _AT(vaddr_t, GB(2))
+
+#define DOMHEAP_ENTRIES        1024  /* 1024 2MB mapping slots */
+
+/* Number of domheap pagetable pages required at the second level (2MB mappings) */
+#define DOMHEAP_SECOND_PAGES (DOMHEAP_VIRT_SIZE >> FIRST_SHIFT)
+
+#else /* ARM_64 */
+
+#define SLOT0_ENTRY_BITS  39
+#define SLOT0(slot) (_AT(vaddr_t,slot) << SLOT0_ENTRY_BITS)
+#define SLOT0_ENTRY_SIZE  SLOT0(1)
+
+#define VMAP_VIRT_START  GB(1)
+#define VMAP_VIRT_SIZE   GB(1)
+
+#define FRAMETABLE_VIRT_START  GB(32)
+
+#define DIRECTMAP_VIRT_START   SLOT0(256)
+#define DIRECTMAP_SIZE         (SLOT0_ENTRY_SIZE * (265-256))
+#define DIRECTMAP_VIRT_END     (DIRECTMAP_VIRT_START + DIRECTMAP_SIZE - 1)
+
+#define XENHEAP_VIRT_START     directmap_virt_start
+
+#define HYPERVISOR_VIRT_END    DIRECTMAP_VIRT_END
+
+#endif
+
+#endif /* __ARM_CONFIG_MMU_H__ */
+/*
+ * Local variables:
+ * mode: C
+ * c-file-style: "BSD"
+ * c-basic-offset: 4
+ * indent-tabs-mode: nil
+ * End:
+ */
diff --git a/xen/arch/arm/include/asm/config_mpu.h b/xen/arch/arm/include/asm/config_mpu.h
new file mode 100644
index 0000000000..6b52b11ef7
--- /dev/null
+++ b/xen/arch/arm/include/asm/config_mpu.h
@@ -0,0 +1,25 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * config_mpu.h: A Linux-style configuration list for Arm MPU systems,
+ *               only can be included by config.h
+ */
+
+#ifndef __ARM_CONFIG_MPU_H__
+#define __ARM_CONFIG_MPU_H__
+
+#define XEN_START_ADDRESS CONFIG_XEN_START_ADDRESS
+
+/*
+ * All MPU platforms need to provide a XEN_START_ADDRESS for linker. This
+ * address indicates where Xen image will be loaded and run from. This
+ * address must be aligned to a PAGE_SIZE.
+ */
+#if (XEN_START_ADDRESS % PAGE_SIZE) != 0
+#error "XEN_START_ADDRESS must be aligned to PAGE_SIZE"
+#endif
+
+#define XEN_VIRT_START         _AT(paddr_t, XEN_START_ADDRESS)
+
+#define HYPERVISOR_VIRT_START  XEN_VIRT_START
+
+#endif /* __ARM_CONFIG_MPU_H__ */
-- 
2.25.1



  parent reply	other threads:[~2023-01-13  5:35 UTC|newest]

Thread overview: 122+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-01-13  5:28 [PATCH v2 00/41] xen/arm: Add Armv8-R64 MPU support to Xen - Part#1 Penny Zheng
2023-01-13  5:28 ` [PATCH v2 01/40] xen/arm: remove xen_phys_start and xenheap_phys_end from config.h Penny Zheng
2023-01-13 10:06   ` Julien Grall
2023-01-13 10:39     ` Penny Zheng
2023-01-13  5:28 ` [PATCH v2 02/40] xen/arm: make ARM_EFI selectable for Arm64 Penny Zheng
2023-01-17 23:09   ` Julien Grall
2023-01-18  2:19     ` Wei Chen
2023-01-13  5:28 ` [PATCH v2 03/40] xen/arm: adjust Xen TLB helpers for Armv8-R64 PMSA Penny Zheng
2023-01-17 23:16   ` Julien Grall
2023-01-18  2:32     ` Wei Chen
2023-01-13  5:28 ` [PATCH v2 04/40] xen/arm: add an option to define Xen start address for Armv8-R Penny Zheng
2023-01-17 23:24   ` Julien Grall
2023-01-18  3:00     ` Wei Chen
2023-01-18  9:44       ` Julien Grall
2023-01-18 10:22         ` Wei Chen
2023-01-18 10:59           ` Julien Grall
2023-01-18 11:27             ` Wei Chen
2023-01-13  5:28 ` [PATCH v2 05/40] xen/arm64: prepare for moving MMU related code from head.S Penny Zheng
2023-01-17 23:37   ` Julien Grall
2023-01-18  3:09     ` Wei Chen
2023-01-18  9:50       ` Julien Grall
2023-01-18 10:24         ` Wei Chen
2023-01-13  5:28 ` [PATCH v2 06/40] xen/arm64: move MMU related code from head.S to head_mmu.S Penny Zheng
2023-01-13  5:28 ` [PATCH v2 07/40] xen/arm64: add .text.idmap for Xen identity map sections Penny Zheng
2023-01-17 23:46   ` Julien Grall
2023-01-18  2:18     ` Wei Chen
2023-01-18 10:55       ` Julien Grall
2023-01-18 11:40         ` Wei Chen
2023-01-13  5:28 ` [PATCH v2 08/40] xen/arm: use PA == VA for EARLY_UART_VIRTUAL_ADDRESS on Armv-8R Penny Zheng
2023-01-17 23:49   ` Julien Grall
2023-01-18  1:43     ` Wei Chen
2023-01-13  5:28 ` [PATCH v2 09/40] xen/arm: decouple copy_from_paddr with FIXMAP Penny Zheng
2023-01-13  5:28 ` Penny Zheng [this message]
2023-01-19 14:20   ` [PATCH v2 10/40] xen/arm: split MMU and MPU config files from config.h Julien Grall
2023-06-05  5:20     ` Penny Zheng
2023-01-13  5:28 ` [PATCH v2 11/40] xen/mpu: build up start-of-day Xen MPU memory region map Penny Zheng
2023-01-19 10:18   ` Ayan Kumar Halder
2023-01-29  6:47     ` Penny Zheng
2023-01-19 15:04   ` Julien Grall
2023-01-29  5:39     ` Penny Zheng
2023-01-29  7:37       ` Julien Grall
2023-01-30  5:45         ` Penny Zheng
2023-01-30  9:39           ` Julien Grall
2023-01-31  4:11             ` Penny Zheng
2023-01-31  9:27               ` Julien Grall
2023-02-01  5:39                 ` Penny Zheng
2023-02-01 18:56                   ` Julien Grall
2023-02-02 10:53                     ` Penny Zheng
2023-02-02 10:58                       ` Julien Grall
2023-02-02 11:30                         ` Penny Zheng
2023-01-13  5:28 ` [PATCH v2 12/40] xen/mpu: introduce helpers for MPU enablement Penny Zheng
2023-01-23 17:07   ` Ayan Kumar Halder
2023-01-24 18:54   ` Julien Grall
2023-01-13  5:28 ` [PATCH v2 13/40] xen/mpu: introduce unified function setup_early_uart to map early UART Penny Zheng
2023-01-24 19:09   ` Julien Grall
2023-01-29  6:17     ` Penny Zheng
2023-01-29  7:43       ` Julien Grall
2023-01-30  6:24         ` Penny Zheng
2023-01-30 10:00           ` Julien Grall
2023-01-31  5:38             ` Penny Zheng
2023-01-31  9:41               ` Julien Grall
2023-02-01  5:36                 ` Penny Zheng
2023-02-01 19:26                   ` Julien Grall
2023-02-02  8:05                     ` Penny Zheng
2023-02-02 11:11                       ` Julien Grall
2023-01-13  5:28 ` [PATCH v2 14/40] xen/arm64: head: Jump to the runtime mapping in enable_mm() Penny Zheng
2023-02-05 21:13   ` Julien Grall
2023-01-13  5:28 ` [PATCH v2 15/40] xen/arm: move MMU-specific memory management code to mm_mmu.c/mm_mmu.h Penny Zheng
2023-02-05 21:30   ` Julien Grall
2023-02-07  3:59     ` Penny Zheng
2023-02-07  8:41       ` Julien Grall
2023-01-13  5:28 ` [PATCH v2 16/40] xen/arm: introduce setup_mm_mappings Penny Zheng
2023-02-05 21:32   ` Julien Grall
2023-02-07  4:40     ` Penny Zheng
2023-01-13  5:28 ` [PATCH v2 17/40] xen/mpu: plump virt/maddr/mfn convertion in MPU system Penny Zheng
2023-02-05 21:36   ` Julien Grall
2023-01-13  5:28 ` [PATCH v2 18/40] xen/mpu: introduce helper access_protection_region Penny Zheng
2023-01-24 19:20   ` Julien Grall
2023-01-13  5:28 ` [PATCH v2 19/40] xen/mpu: populate a new region in Xen MPU mapping table Penny Zheng
2023-02-05 21:45   ` Julien Grall
2023-02-07  5:07     ` Penny Zheng
2023-01-13  5:28 ` [PATCH v2 20/40] xen/mpu: plump early_fdt_map in MPU systems Penny Zheng
2023-02-05 21:52   ` Julien Grall
2023-02-06 10:11   ` Julien Grall
2023-02-07  6:30     ` Penny Zheng
2023-02-07  8:47       ` Julien Grall
2023-01-13  5:28 ` [PATCH v2 21/40] xen/arm: move MMU-specific setup_mm to setup_mmu.c Penny Zheng
2023-01-13  5:28 ` [PATCH v2 22/40] xen/mpu: implement MPU version of setup_mm in setup_mpu.c Penny Zheng
2023-01-13  5:28 ` [PATCH v2 23/40] xen/mpu: initialize frametable in MPU system Penny Zheng
2023-02-05 22:07   ` Julien Grall
2023-01-13  5:28 ` [PATCH v2 24/40] xen/mpu: introduce "mpu,xxx-memory-section" Penny Zheng
2023-01-13  5:28 ` [PATCH v2 25/40] xen/mpu: map MPU guest memory section before static memory initialization Penny Zheng
2023-02-09 10:51   ` Julien Grall
2023-01-13  5:28 ` [PATCH v2 26/40] xen/mpu: destroy an existing entry in Xen MPU memory mapping table Penny Zheng
2023-02-09 10:57   ` Julien Grall
2023-01-13  5:29 ` [PATCH v2 27/40] xen/mpu: map device memory resource in MPU system Penny Zheng
2023-01-13  5:29 ` [PATCH v2 28/40] xen/mpu: map boot module section " Penny Zheng
2023-01-13  5:29 ` [PATCH v2 29/40] xen/mpu: introduce mpu_memory_section_contains for address range check Penny Zheng
2023-01-13  5:29 ` [PATCH v2 30/40] xen/mpu: disable VMAP sub-system for MPU systems Penny Zheng
2023-01-13  9:39   ` Jan Beulich
2023-01-13  5:29 ` [PATCH v2 31/40] xen/mpu: disable FIXMAP in MPU system Penny Zheng
2023-01-13  9:42   ` Jan Beulich
2023-01-13 10:10   ` Jan Beulich
2023-02-09 11:01     ` Julien Grall
2023-01-13  5:29 ` [PATCH v2 32/40] xen/mpu: implement MPU version of ioremap_xxx Penny Zheng
2023-01-13  9:49   ` Jan Beulich
2023-02-09 11:14   ` Julien Grall
2023-01-13  5:29 ` [PATCH v2 33/40] xen/arm: check mapping status and attributes for MPU copy_from_paddr Penny Zheng
2023-01-13  5:29 ` [PATCH v2 34/40] xen/mpu: free init memory in MPU system Penny Zheng
2023-02-09 11:27   ` Julien Grall
2023-01-13  5:29 ` [PATCH v2 35/40] xen/mpu: destroy boot modules and early FDT mapping " Penny Zheng
2023-01-13  5:29 ` [PATCH v2 36/40] xen/mpu: Use secure hypervisor timer for AArch64v8R Penny Zheng
2023-02-05 22:26   ` Julien Grall
2023-01-13  5:29 ` [PATCH v2 37/40] xen/mpu: move MMU specific P2M code to p2m_mmu.c Penny Zheng
2023-01-13  5:29 ` [PATCH v2 38/40] xen/mpu: implement setup_virt_paging for MPU system Penny Zheng
2023-01-13  5:29 ` [PATCH v2 39/40] xen/mpu: re-order xen_mpumap in arch_init_finialize Penny Zheng
2023-01-13  5:29 ` [PATCH v2 40/40] xen/mpu: add Kconfig option to enable Armv8-R AArch64 support Penny Zheng
2023-01-13  5:29 ` [PATCH] xen/mpu: make Xen boot to idle on MPU systems(DNM) Penny Zheng
2023-01-13  8:54 ` [PATCH v2 00/41] xen/arm: Add Armv8-R64 MPU support to Xen - Part#1 Jan Beulich
2023-01-13  9:16   ` Julien Grall
2023-01-13  9:28     ` Jan Beulich
2023-01-24 19:31 ` Ayan Kumar Halder

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