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authorMax Filippov <jcmvbkbc@gmail.com>2018-08-14 02:45:54 +0300
committerMax Filippov <jcmvbkbc@gmail.com>2018-08-20 22:28:03 +0300
commitaea731c81f998af5e45654459bac24a1c808fb22 (patch)
tree89988ef2493bf7ca73f27351db51d5a6c7dcea0f /arch
parentf79e4d5f92a129a1159c973735007d4ddc8541f3 (diff)
downloadlinux-aea731c81f998af5e45654459bac24a1c808fb22.tar.xz
xtensa: rework {CONFIG,PLATFORM}_DEFAULT_MEM_START
Drop PLATFORM_DEFAULT_MEM_START from the platform/hardware.h headers. Provide definition of CONFIG_DEFAULT_MEM_START always, allow changing it only in noMMU configurations when PLATFORM_WANT_DEFAULT_MEM is selected. Change prompt and description so that it's clear that it controls PAGE_OFFSET and PHYS_OFFSET. Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Diffstat (limited to 'arch')
-rw-r--r--arch/xtensa/Kconfig15
-rw-r--r--arch/xtensa/include/asm/page.h5
-rw-r--r--arch/xtensa/platforms/iss/include/platform/hardware.h10
-rw-r--r--arch/xtensa/platforms/xt2000/include/platform/hardware.h6
-rw-r--r--arch/xtensa/platforms/xtfpga/include/platform/hardware.h4
5 files changed, 9 insertions, 31 deletions
diff --git a/arch/xtensa/Kconfig b/arch/xtensa/Kconfig
index 787515c6770e..e82ed7216eca 100644
--- a/arch/xtensa/Kconfig
+++ b/arch/xtensa/Kconfig
@@ -530,14 +530,13 @@ config PLATFORM_WANT_DEFAULT_MEM
def_bool n
config DEFAULT_MEM_START
- hex "Physical address of the default memory area start"
- depends on PLATFORM_WANT_DEFAULT_MEM
- default 0x00000000 if MMU
- default 0x60000000 if !MMU
- help
- This is the base address of the default memory area.
- Default memory area has platform-specific meaning, it may be used
- for e.g. early cache initialization.
+ hex
+ prompt "PAGE_OFFSET/PHYS_OFFSET" if !MMU && PLATFORM_WANT_DEFAULT_MEM
+ default 0x60000000 if PLATFORM_WANT_DEFAULT_MEM
+ default 0x00000000
+ help
+ This is the base address used for both PAGE_OFFSET and PHYS_OFFSET
+ in noMMU configurations.
If unsure, leave the default value here.
diff --git a/arch/xtensa/include/asm/page.h b/arch/xtensa/include/asm/page.h
index 5d69c11c01b8..09c56cba442e 100644
--- a/arch/xtensa/include/asm/page.h
+++ b/arch/xtensa/include/asm/page.h
@@ -14,7 +14,6 @@
#include <asm/processor.h>
#include <asm/types.h>
#include <asm/cache.h>
-#include <platform/hardware.h>
#include <asm/kmem_layout.h>
/*
@@ -31,8 +30,8 @@
#define MAX_LOW_PFN (PHYS_PFN(XCHAL_KSEG_PADDR) + \
PHYS_PFN(XCHAL_KSEG_SIZE))
#else
-#define PAGE_OFFSET PLATFORM_DEFAULT_MEM_START
-#define PHYS_OFFSET PLATFORM_DEFAULT_MEM_START
+#define PAGE_OFFSET _AC(CONFIG_DEFAULT_MEM_START, UL)
+#define PHYS_OFFSET _AC(CONFIG_DEFAULT_MEM_START, UL)
#define MAX_LOW_PFN PHYS_PFN(0xfffffffful)
#endif
diff --git a/arch/xtensa/platforms/iss/include/platform/hardware.h b/arch/xtensa/platforms/iss/include/platform/hardware.h
index 9acea2508c05..254906a89a2b 100644
--- a/arch/xtensa/platforms/iss/include/platform/hardware.h
+++ b/arch/xtensa/platforms/iss/include/platform/hardware.h
@@ -15,14 +15,4 @@
#ifndef _XTENSA_PLATFORM_ISS_HARDWARE_H
#define _XTENSA_PLATFORM_ISS_HARDWARE_H
-/*
- * Memory configuration.
- */
-
-#define PLATFORM_DEFAULT_MEM_START 0x00000000
-
-/*
- * Interrupt configuration.
- */
-
#endif /* _XTENSA_PLATFORM_ISS_HARDWARE_H */
diff --git a/arch/xtensa/platforms/xt2000/include/platform/hardware.h b/arch/xtensa/platforms/xt2000/include/platform/hardware.h
index 4ad16bfc63b8..a309ec190777 100644
--- a/arch/xtensa/platforms/xt2000/include/platform/hardware.h
+++ b/arch/xtensa/platforms/xt2000/include/platform/hardware.h
@@ -17,12 +17,6 @@
#include <variant/core.h>
-/*
- * Memory configuration.
- */
-
-#define PLATFORM_DEFAULT_MEM_START 0x00000000
-
/*
* Number of platform IRQs
*/
diff --git a/arch/xtensa/platforms/xtfpga/include/platform/hardware.h b/arch/xtensa/platforms/xtfpga/include/platform/hardware.h
index cbf3cddafeaf..99d9bcbec57e 100644
--- a/arch/xtensa/platforms/xtfpga/include/platform/hardware.h
+++ b/arch/xtensa/platforms/xtfpga/include/platform/hardware.h
@@ -17,10 +17,6 @@
#ifndef __XTENSA_XTAVNET_HARDWARE_H
#define __XTENSA_XTAVNET_HARDWARE_H
-/* Memory configuration. */
-
-#define PLATFORM_DEFAULT_MEM_START __XTENSA_UL(CONFIG_DEFAULT_MEM_START)
-
/* Interrupt configuration. */
#define PLATFORM_NR_IRQS 0