xtensa: nommu support

Add support for !CONFIG_MMU setups.

Signed-off-by: Johannes Weiner <jw@emlix.com>
Signed-off-by: Chris Zankel <chris@zankel.net>

1 files changed, 6 insertions, 0 deletions

diff --git a/arch/xtensa/include/asm/processor.h b/arch/xtensa/include/asm/processor.h
index fba8b7e44a2..0ea4937c0b6 100644
--- a/arch/xtensa/include/asm/processor.h
+++ b/arch/xtensa/include/asm/processor.h
@@ -13,6 +13,7 @@
 
 #include <variant/core.h>
 #include <asm/coprocessor.h>
+#include <platform/hardware.h>
 
 #include <linux/compiler.h>
 #include <asm/ptrace.h>
@@ -35,7 +36,12 @@
  * the 1 GB requirement applies to the stack as well.
  */
 
+#ifdef CONFIG_MMU
 #define TASK_SIZE       __XTENSA_UL_CONST(0x40000000)
+#else
+#define TASK_SIZE       (PLATFORM_DEFAULT_MEM_START + PLATFORM_DEFAULT_MEM_SIZE)
+#endif
+
 #define STACK_TOP       TASK_SIZE
 #define STACK_TOP_MAX   STACK_TOP