[ARM] 3590/1: AT91RM9200 Platform devices support
Patch from Andrew Victor
This patch includes the structures and exported functions required for
the platform-device support (added in patch 3585/1).
Also adds the arch_identify() function for run-time detection of which
AT91 processor the code is running on. [Original patch from Ivan
Kokshaysky]
Signed-off-by: Andrew Victor <andrew@sanpeople.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
diff --git a/include/asm-arm/arch-at91rm9200/system.h b/include/asm-arm/arch-at91rm9200/system.h
index 29c4265..945e665 100644
--- a/include/asm-arm/arch-at91rm9200/system.h
+++ b/include/asm-arm/arch-at91rm9200/system.h
@@ -48,4 +48,12 @@
at91_sys_write(AT91_ST_CR, AT91_ST_WDRST);
}
+#define ARCH_ID_AT91RM9200 0x09200080
+#define ARCH_ID_AT91SAM9261 0x019000a0
+
+static inline unsigned long arch_identify(void)
+{
+ return at91_sys_read(AT91_DBGU_CIDR) & (AT91_CIDR_EPROC | AT91_CIDR_ARCH);
+}
+
#endif