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authorMark A. Greer <mgreer@mvista.com>2009-06-04 05:36:54 +0400
committerKevin Hilman <khilman@deeprootsystems.com>2009-08-26 11:56:59 +0400
commit55c79a40e34566e9d198f6205b0cf06e3d89ac0a (patch)
treedb18d12effb87c61cfe4d14635feb7807dd0be42 /arch/arm/mach-davinci/Kconfig
parentff255c6caa389c90c68f5421f60ebfc40b68ea1b (diff)
downloadlinux-55c79a40e34566e9d198f6205b0cf06e3d89ac0a.tar.xz
davinci: da8xx: Add base DA830/OMAP-L137 SoC support
The da830/omap l137 is a new SoC from TI that is similar to the davinci line. Since its so similar to davinci, put the support for the da830 in the same directory as the davinci code. There are differences, however. Some of those differences prevent support for davinci and da830 platforms to work in the same kernel binary. Those differences are: 1) Different physical address for RAM. This is relevant to Makefile.boot addresses and PHYS_OFFSET. The Makefile.boot issue isn't truly a kernel issue but it means u-boot won't work with a uImage including both architectures. The PHYS_OFFSET issue is addressed by the "Allow for runtime-determined PHYS_OFFSET" patch by Lennert Buytenhek but it hasn't been accepted yet. 2) Different uart addresses. This is only an issue for the 'addruart' assembly macro when CONFIG_DEBUG_LL is enabled. Since the code in that macro is called so early (e.g., by _error_p in kernel/head.S when the processor lookup fails), we can't determine what platform the kernel is running on at runtime to use the correct uart address. These areas have compile errors intentionally inserted to indicate to the builder they're doing something wrong. A new config variable, CONFIG_ARCH_DAVINCI_DMx, is added to distinguish between a true davinci architecture and the da830 architecture. Note that the da830 currently has an issue with writeback data cache so CONFIG_CPU_DCACHE_WRITETHROUGH should be enabled when building a da830 kernel. Additional generalizations for future SoCs in the da8xx family done by Sudhakar Rajashekhara and Sekhar Nori. Signed-off-by: Steve Chen <schen@mvista.com> Signed-off-by: Mikhail Cherkashin <mcherkashin@ru.mvista.com> Signed-off-by: Mark A. Greer <mgreer@mvista.com> Cc: Sudhakar Rajashekhara <sudhakar.raj@ti.com> Cc: Sekhar Nori <nsekhar@ti.com> Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
Diffstat (limited to 'arch/arm/mach-davinci/Kconfig')
-rw-r--r--arch/arm/mach-davinci/Kconfig14
1 files changed, 14 insertions, 0 deletions
diff --git a/arch/arm/mach-davinci/Kconfig b/arch/arm/mach-davinci/Kconfig
index b16f5e31c08a..312228ed8489 100644
--- a/arch/arm/mach-davinci/Kconfig
+++ b/arch/arm/mach-davinci/Kconfig
@@ -6,6 +6,9 @@ config AINTC
config CP_INTC
bool
+config ARCH_DAVINCI_DMx
+ bool
+
menu "TI DaVinci Implementations"
comment "DaVinci Core Type"
@@ -13,14 +16,25 @@ comment "DaVinci Core Type"
config ARCH_DAVINCI_DM644x
bool "DaVinci 644x based system"
select AINTC
+ select ARCH_DAVINCI_DMx
config ARCH_DAVINCI_DM355
bool "DaVinci 355 based system"
select AINTC
+ select ARCH_DAVINCI_DMx
config ARCH_DAVINCI_DM646x
bool "DaVinci 646x based system"
select AINTC
+ select ARCH_DAVINCI_DMx
+
+config ARCH_DAVINCI_DA830
+ bool "DA830/OMAP-L137 based system"
+ select CP_INTC
+ select ARCH_DAVINCI_DA8XX
+
+config ARCH_DAVINCI_DA8XX
+ bool
config ARCH_DAVINCI_DM365
bool "DaVinci 365 based system"