Q: PHYS_OFFSET of 0xf0000000
Hartley Sweeten
HartleyS at visionengravers.com
Fri Nov 7 08:43:19 PST 2014
Hello Russell,
I have an ep93xx user with a board that uses physical address
0xf0000000 as the base address for the SDRAM on their board.
Currently they are using an old 2.6.20 kernel with no problems.
They are trying to use a 3.x kernel and the system does not
boot.
I sent them a patch to use ARM_PATCH_PHYS_VIRT and
AUTO_ZRELADDR instead of the hardcoded PHYS_OFFSET
on the ARCH_EP93XX platform but the 0xf0000000 physical
address still does not work.
The patched kernel (3.17.2) does boot on boards with the SDRAM
located at physical address 0x00000000 and 0xc0000000. These
boards boot with the following information in the boot log:
Memory: 60056K/65536K available (3432K kernel code, 185K rwdata, 976K rodata, 133K init, 107K bss, 5480K reserved)
Virtual kernel memory layout:
vector : 0xffff0000 - 0xffff1000 ( 4 kB)
fixmap : 0xffc00000 - 0xffe00000 (2048 kB)
vmalloc : 0xc6800000 - 0xff000000 ( 904 MB)
lowmem : 0xc0000000 - 0xc6000000 ( 96 MB)
modules : 0xbf000000 - 0xc0000000 ( 16 MB)
.text : 0xc0008000 - 0xc0456274 (4409 kB)
.init : 0xc0457000 - 0xc04785cc ( 134 kB)
.data : 0xc047a000 - 0xc04a8700 ( 186 kB)
.bss : 0xc04a8700 - 0xc04c365c ( 108 kB)
Would the 0xf0000000 physical address be a problem
since it's located in the vmalloc range?
Any ideas on what to do?
Following is a copy of the patch I sent them to test.
Regards,
Hartley
---
>From 4d11e5103003f3e6caa5660c216df2da1aa8f6fd Mon Sep 17 00:00:00 2001
From: H Hartley Sweeten <hsweeten at visionengravers.com>
Date: Mon, 20 Oct 2014 11:34:09 -0700
Subject: [PATCH] arm: ep93xx: remove memory configuration options
The ARM_PATCH_PHYS_VIRT option makes the ep93xx memory configuration
options obsolete.
Signed-off-by: H Hartley Sweeten <hsweeten at visionengravers.com>
---
arch/arm/Kconfig | 8 +++---
arch/arm/mach-ep93xx/Kconfig | 54 --------------------------------------
arch/arm/mach-ep93xx/Makefile.boot | 15 +----------
3 files changed, 4 insertions(+), 73 deletions(-)
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 9d580d0..fbccf49 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -263,7 +263,6 @@ config PHYS_OFFSET
depends on !ARM_PATCH_PHYS_VIRT
default DRAM_BASE if !MMU
default 0x00000000 if ARCH_EBSA110 || \
- EP93XX_SDCE3_SYNC_PHYS_OFFSET || \
ARCH_FOOTBRIDGE || \
ARCH_INTEGRATOR || \
ARCH_IOP13XX || \
@@ -272,10 +271,7 @@ config PHYS_OFFSET
default 0x10000000 if ARCH_OMAP1 || ARCH_RPC
default 0x20000000 if ARCH_S5PV210
default 0x70000000 if REALVIEW_HIGH_PHYS_OFFSET
- default 0xc0000000 if EP93XX_SDCE0_PHYS_OFFSET || ARCH_SA1100
- default 0xd0000000 if EP93XX_SDCE1_PHYS_OFFSET
- default 0xe0000000 if EP93XX_SDCE2_PHYS_OFFSET
- default 0xf0000000 if EP93XX_SDCE3_ASYNC_PHYS_OFFSET
+ default 0xc0000000 if ARCH_SA1100
help
Please provide the physical address corresponding to the
location of main memory in your system.
@@ -424,7 +420,9 @@ config ARCH_EP93XX
select ARCH_REQUIRE_GPIOLIB
select ARCH_USES_GETTIMEOFFSET
select ARM_AMBA
+ select ARM_PATCH_PHYS_VIRT
select ARM_VIC
+ select AUTO_ZRELADDR
select CLKDEV_LOOKUP
select CPU_ARM920T
help
diff --git a/arch/arm/mach-ep93xx/Kconfig b/arch/arm/mach-ep93xx/Kconfig
index bec570a..61a75ca 100644
--- a/arch/arm/mach-ep93xx/Kconfig
+++ b/arch/arm/mach-ep93xx/Kconfig
@@ -15,45 +15,8 @@ config CRUNCH
comment "EP93xx Platforms"
-choice
- prompt "EP93xx first SDRAM bank selection"
- default EP93XX_SDCE3_SYNC_PHYS_OFFSET
-
-config EP93XX_SDCE3_SYNC_PHYS_OFFSET
- bool "0x00000000 - SDCE3/SyncBoot"
- help
- Select this option if you want support for EP93xx boards with the
- first SDRAM bank at 0x00000000.
-
-config EP93XX_SDCE0_PHYS_OFFSET
- bool "0xc0000000 - SDCEO"
- help
- Select this option if you want support for EP93xx boards with the
- first SDRAM bank at 0xc0000000.
-
-config EP93XX_SDCE1_PHYS_OFFSET
- bool "0xd0000000 - SDCE1"
- help
- Select this option if you want support for EP93xx boards with the
- first SDRAM bank at 0xd0000000.
-
-config EP93XX_SDCE2_PHYS_OFFSET
- bool "0xe0000000 - SDCE2"
- help
- Select this option if you want support for EP93xx boards with the
- first SDRAM bank at 0xe0000000.
-
-config EP93XX_SDCE3_ASYNC_PHYS_OFFSET
- bool "0xf0000000 - SDCE3/AsyncBoot"
- help
- Select this option if you want support for EP93xx boards with the
- first SDRAM bank at 0xf0000000.
-
-endchoice
-
config MACH_ADSSPHERE
bool "Support ADS Sphere"
- depends on EP93XX_SDCE3_SYNC_PHYS_OFFSET
help
Say 'Y' here if you want your kernel to support the ADS
Sphere board.
@@ -63,7 +26,6 @@ config MACH_EDB93XX
config MACH_EDB9301
bool "Support Cirrus Logic EDB9301"
- depends on EP93XX_SDCE3_SYNC_PHYS_OFFSET
select MACH_EDB93XX
help
Say 'Y' here if you want your kernel to support the Cirrus
@@ -71,7 +33,6 @@ config MACH_EDB9301
config MACH_EDB9302
bool "Support Cirrus Logic EDB9302"
- depends on EP93XX_SDCE3_SYNC_PHYS_OFFSET
select MACH_EDB93XX
help
Say 'Y' here if you want your kernel to support the Cirrus
@@ -79,7 +40,6 @@ config MACH_EDB9302
config MACH_EDB9302A
bool "Support Cirrus Logic EDB9302A"
- depends on EP93XX_SDCE0_PHYS_OFFSET
select MACH_EDB93XX
help
Say 'Y' here if you want your kernel to support the Cirrus
@@ -87,7 +47,6 @@ config MACH_EDB9302A
config MACH_EDB9307
bool "Support Cirrus Logic EDB9307"
- depends on EP93XX_SDCE3_SYNC_PHYS_OFFSET
select MACH_EDB93XX
help
Say 'Y' here if you want your kernel to support the Cirrus
@@ -95,7 +54,6 @@ config MACH_EDB9307
config MACH_EDB9307A
bool "Support Cirrus Logic EDB9307A"
- depends on EP93XX_SDCE0_PHYS_OFFSET
select MACH_EDB93XX
help
Say 'Y' here if you want your kernel to support the Cirrus
@@ -103,7 +61,6 @@ config MACH_EDB9307A
config MACH_EDB9312
bool "Support Cirrus Logic EDB9312"
- depends on EP93XX_SDCE3_SYNC_PHYS_OFFSET
select MACH_EDB93XX
help
Say 'Y' here if you want your kernel to support the Cirrus
@@ -111,7 +68,6 @@ config MACH_EDB9312
config MACH_EDB9315
bool "Support Cirrus Logic EDB9315"
- depends on EP93XX_SDCE3_SYNC_PHYS_OFFSET
select MACH_EDB93XX
help
Say 'Y' here if you want your kernel to support the Cirrus
@@ -119,14 +75,12 @@ config MACH_EDB9315
config MACH_EDB9315A
bool "Support Cirrus Logic EDB9315A"
- depends on EP93XX_SDCE0_PHYS_OFFSET
select MACH_EDB93XX
help
Say 'Y' here if you want your kernel to support the Cirrus
Logic EDB9315A Evaluation Board.
config MACH_GESBC9312
- depends on EP93XX_SDCE3_SYNC_PHYS_OFFSET
bool "Support Glomation GESBC-9312-sx"
help
Say 'Y' here if you want your kernel to support the Glomation
@@ -137,7 +91,6 @@ config MACH_MICRO9
config MACH_MICRO9H
bool "Support Contec Micro9-High"
- depends on EP93XX_SDCE3_SYNC_PHYS_OFFSET
select MACH_MICRO9
help
Say 'Y' here if you want your kernel to support the
@@ -145,7 +98,6 @@ config MACH_MICRO9H
config MACH_MICRO9M
bool "Support Contec Micro9-Mid"
- depends on EP93XX_SDCE3_ASYNC_PHYS_OFFSET
select MACH_MICRO9
help
Say 'Y' here if you want your kernel to support the
@@ -153,7 +105,6 @@ config MACH_MICRO9M
config MACH_MICRO9L
bool "Support Contec Micro9-Lite"
- depends on EP93XX_SDCE3_SYNC_PHYS_OFFSET
select MACH_MICRO9
help
Say 'Y' here if you want your kernel to support the
@@ -161,7 +112,6 @@ config MACH_MICRO9L
config MACH_MICRO9S
bool "Support Contec Micro9-Slim"
- depends on EP93XX_SDCE3_ASYNC_PHYS_OFFSET
select MACH_MICRO9
help
Say 'Y' here if you want your kernel to support the
@@ -169,28 +119,24 @@ config MACH_MICRO9S
config MACH_SIM_ONE
bool "Support Simplemachines Sim.One board"
- depends on EP93XX_SDCE0_PHYS_OFFSET
help
Say 'Y' here if you want your kernel to support the
Simplemachines Sim.One board.
config MACH_SNAPPER_CL15
bool "Support Bluewater Systems Snapper CL15 Module"
- depends on EP93XX_SDCE0_PHYS_OFFSET
help
Say 'Y' here if you want your kernel to support the Bluewater
Systems Snapper CL15 Module.
config MACH_TS72XX
bool "Support Technologic Systems TS-72xx SBC"
- depends on EP93XX_SDCE3_SYNC_PHYS_OFFSET
help
Say 'Y' here if you want your kernel to support the
Technologic Systems TS-72xx board.
config MACH_VISION_EP9307
bool "Support Vision Engraving Systems EP9307 SoM"
- depends on EP93XX_SDCE0_PHYS_OFFSET
help
Say 'Y' here if you want your kernel to support the
Vision Engraving Systems EP9307 SoM.
diff --git a/arch/arm/mach-ep93xx/Makefile.boot b/arch/arm/mach-ep93xx/Makefile.boot
index d3113a7..ed82ed7 100644
--- a/arch/arm/mach-ep93xx/Makefile.boot
+++ b/arch/arm/mach-ep93xx/Makefile.boot
@@ -1,14 +1 @@
- zreladdr-$(CONFIG_EP93XX_SDCE3_SYNC_PHYS_OFFSET) += 0x00008000
-params_phys-$(CONFIG_EP93XX_SDCE3_SYNC_PHYS_OFFSET) := 0x00000100
-
- zreladdr-$(CONFIG_EP93XX_SDCE0_PHYS_OFFSET) += 0xc0008000
-params_phys-$(CONFIG_EP93XX_SDCE0_PHYS_OFFSET) := 0xc0000100
-
- zreladdr-$(CONFIG_EP93XX_SDCE1_PHYS_OFFSET) += 0xd0008000
-params_phys-$(CONFIG_EP93XX_SDCE1_PHYS_OFFSET) := 0xd0000100
-
- zreladdr-$(CONFIG_EP93XX_SDCE2_PHYS_OFFSET) += 0xe0008000
-params_phys-$(CONFIG_EP93XX_SDCE2_PHYS_OFFSET) := 0xe0000100
-
- zreladdr-$(CONFIG_EP93XX_SDCE3_ASYNC_PHYS_OFFSET) += 0xf0008000
-params_phys-$(CONFIG_EP93XX_SDCE3_ASYNC_PHYS_OFFSET) := 0xf0000100
+# Empty file waiting for deletion once Makefile.boot isn't needed any more.
--
2.0.3
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