From: "pascal@pabr.org" <pascal@pabr.org>
To: linux-mips@linux-mips.org
Subject: [RFC] Support 36-bit iomem on 32-bit Au1x00
Date: Sun, 03 Jan 2010 13:39:12 +0100 [thread overview]
Message-ID: <hhq35v$m1q$1@ger.gmane.org> (raw)
Hi,
I believe these changes are needed on Alchemy SoCs in order to
use iomem above 4G with the usual platform_device machinery:
- Set CONFIG_ARCH_PHYS_ADDR_T_64BIT to make resource_size_t 64-bit.
- Increase IOMEM_RESOURCE_END so that platforms can register resources.
--- linux-2.6.33-rc2/arch/mips/Kconfig.orig 2009-12-30 18:06:02.000000000 +0100
+++ linux-2.6.33-rc2/arch/mips/Kconfig 2009-12-30 22:05:38.000000000 +0100
@@ -1725,6 +1725,9 @@
config 64BIT_PHYS_ADDR
bool
+config ARCH_PHYS_ADDR_T_64BIT
+ def_bool 64BIT_PHYS_ADDR
+
config CPU_HAS_SMARTMIPS
depends on SYS_SUPPORTS_SMARTMIPS
bool "Support for the SmartMIPS ASE"
--- linux-2.6.33-rc2/arch/mips/include/asm/mach-au1x00/au1000.h.orig 2009-12-30 19:45:35.000000000 +0100
+++ linux-2.6.33-rc2/arch/mips/include/asm/mach-au1x00/au1000.h 2010-01-03 13:28:50.000000000 +0100
@@ -1728,7 +1728,7 @@
#define IOPORT_RESOURCE_START 0x10000000
#define IOPORT_RESOURCE_END 0xffffffff
#define IOMEM_RESOURCE_START 0x10000000
-#define IOMEM_RESOURCE_END 0xffffffff
+#define IOMEM_RESOURCE_END 0xfffffffffLL
#define PCI_IO_START 0
#define PCI_IO_END 0
next reply other threads:[~2010-01-03 12:39 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-01-03 12:39 pascal [this message]
2010-01-26 20:46 ` [RFC] Support 36-bit iomem on 32-bit Au1x00 Manuel Lauss
2010-01-26 21:19 ` pascal
2010-01-28 13:18 ` Ralf Baechle
2010-01-28 13:22 ` Manuel Lauss
2010-01-28 13:53 ` Ralf Baechle
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