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| author | Max Filippov <jcmvbkbc@gmail.com> | 2014-10-04 04:45:39 +0400 |
|---|---|---|
| committer | Max Filippov <jcmvbkbc@gmail.com> | 2014-10-21 13:28:59 +0400 |
| commit | 3932b9ca55b0be314a36d3e84faff3e823c081f5 (patch) | |
| tree | 6d36ed996673b5f8ba1b61fadcaac8e20ab77855 /arch/xtensa | |
| parent | 5a0b1d78bfc5ca4079ea03abb0ecc0d61d676e41 (diff) | |
| download | linux-3932b9ca55b0be314a36d3e84faff3e823c081f5.tar.gz linux-3932b9ca55b0be314a36d3e84faff3e823c081f5.tar.bz2 linux-3932b9ca55b0be314a36d3e84faff3e823c081f5.zip | |
xtensa: make PLATFORM_DEFAULT_MEM parameters configurable
This allows using xtfpga platform with both MMU and noMMU cores.
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Diffstat (limited to 'arch/xtensa')
| -rw-r--r-- | arch/xtensa/Kconfig | 36 | ||||
| -rw-r--r-- | arch/xtensa/platforms/xtfpga/include/platform/hardware.h | 4 |
2 files changed, 38 insertions, 2 deletions
diff --git a/arch/xtensa/Kconfig b/arch/xtensa/Kconfig index cb44f6f95968..f860dbe28b5e 100644 --- a/arch/xtensa/Kconfig +++ b/arch/xtensa/Kconfig @@ -319,6 +319,7 @@ config XTENSA_PLATFORM_S6105 config XTENSA_PLATFORM_XTFPGA bool "XTFPGA" select ETHOC if ETHERNET + select PLATFORM_WANT_DEFAULT_MEM select SERIAL_CONSOLE select XTENSA_CALIBRATE_CCOUNT help @@ -405,6 +406,41 @@ source "drivers/pcmcia/Kconfig" source "drivers/pci/hotplug/Kconfig" +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 0x40000000 if !MMU + help + This is a fallback start address of the default memory area, it is + used when no physical memory size is passed through DTB or through + boot parameter from bootloader. + + In noMMU configuration the following parameters are derived from it: + - kernel load address; + - kernel entry point address; + - relocatable vectors base address; + - uBoot load address; + - TASK_SIZE. + + If unsure, leave the default value here. + +config DEFAULT_MEM_SIZE + hex "Maximal size of the default memory area" + depends on PLATFORM_WANT_DEFAULT_MEM + default 0x04000000 + help + This is a fallback size of the default memory area, it is used when + no physical memory size is passed through DTB or through boot + parameter from bootloader. + + It's also used for TASK_SIZE calculation in noMMU configuration. + + If unsure, leave the default value here. + endmenu menu "Executable file formats" diff --git a/arch/xtensa/platforms/xtfpga/include/platform/hardware.h b/arch/xtensa/platforms/xtfpga/include/platform/hardware.h index aeb316b7ff88..6edd20bb4565 100644 --- a/arch/xtensa/platforms/xtfpga/include/platform/hardware.h +++ b/arch/xtensa/platforms/xtfpga/include/platform/hardware.h @@ -17,8 +17,8 @@ /* Memory configuration. */ -#define PLATFORM_DEFAULT_MEM_START 0x00000000 -#define PLATFORM_DEFAULT_MEM_SIZE 0x04000000 +#define PLATFORM_DEFAULT_MEM_START CONFIG_DEFAULT_MEM_START +#define PLATFORM_DEFAULT_MEM_SIZE CONFIG_DEFAULT_MEM_SIZE /* Interrupt configuration. */ |