[PATCH 2/3] Add support for SPARC (maybe).

[Stefan Tauner]

Does (cross-)compile but is not run-tested.

Signed-off-by: Stefan Tauner 
Acked-by: Stefan Tauner 
---
 Makefile   | 2 +-
 hwaccess.h | 8 ++++++++
 platform.h | 5 ++++-
 3 files changed, 13 insertions(+), 2 deletions(-)

diff --git a/Makefile b/Makefile
index b738e73..54ebfe4 100644
--- a/Makefile
+++ b/Makefile
@@ -320,7 +320,7 @@ endif
 # below uses CC itself.
 override ARCH := $(strip $(shell LC_ALL=C $(CC) $(CPPFLAGS) -E archtest.c 2>/dev/null | grep -v '^#' | grep '"' | cut -f 2 -d'"'))

-# PCI port I/O support is unimplemented on PPC/MIPS and unavailable on ARM.
+# PCI port I/O support is unimplemented on PPC/MIPS/SPARC and unavailable on ARM.
 # Right now this means the drivers below only work on x86.
 ifneq ($(ARCH), x86)
 ifeq ($(CONFIG_NIC3COM), yes)
diff --git a/hwaccess.h b/hwaccess.h
index a4fd502..5378361 100644
--- a/hwaccess.h
+++ b/hwaccess.h
@@ -89,6 +89,10 @@
 #define __FLASHROM_LITTLE_ENDIAN__ 1
 #endif

+#elif IS_SPARC
+/* SPARC is big endian in general (but allows to access data in little endian too). */
+#define __FLASHROM_BIG_ENDIAN__ 1
+
 #endif /* IS_? */

#if !defined (__FLASHROM_BIG_ENDIAN__) && !defined (__FLASHROM_LITTLE_ENDIAN__)
@@ -357,6 +361,10 @@ int libpayload_wrmsr(int addr, msr_t msr);

/* PCI port I/O is not yet implemented on MIPS. */

+#elif IS_SPARC
+
+/* PCI port I/O is not yet implemented on SPARC. */
+
 #elif IS_ARM

/* Non memory mapped I/O is not supported on ARM. */
diff --git a/platform.h b/platform.h
index f57fd12..9cde054 100644
--- a/platform.h
+++ b/platform.h
@@ -45,9 +45,12 @@
       defined(__aarch64__)
    #define __FLASHROM_ARCH__ "arm"
    #define IS_ARM 1
+#elif defined (__sparc__) || defined (__sparc)
+	#define __FLASHROM_ARCH__ "sparc"
+	#define IS_SPARC 1
 #endif

-#if !(IS_X86 || IS_MIPS || IS_PPC || IS_ARM)
+#if !(IS_X86 || IS_MIPS || IS_PPC || IS_ARM || IS_SPARC)
 #error Unknown architecture
 #endif