From 6b44cdcf0c7042fda944f6bb44fbb8dd7e165931 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Markus=20Fr=C3=B6schle?= <mfro@mubf.de>
Date: Sun, 23 Oct 2016 14:25:39 +0000
Subject: [PATCH] clear PCI memory

---
 BaS_gcc/tos/pci_test/Makefile           |  5 +++--
 BaS_gcc/tos/pci_test/sources/pci_test.c | 14 ++++++++++----
 2 files changed, 13 insertions(+), 6 deletions(-)

diff --git a/BaS_gcc/tos/pci_test/Makefile b/BaS_gcc/tos/pci_test/Makefile
index cb281ad..fb8b857 100755
--- a/BaS_gcc/tos/pci_test/Makefile
+++ b/BaS_gcc/tos/pci_test/Makefile
@@ -35,7 +35,8 @@ APP=pci_test.prg
 TEST_APP=$(APP)
 
 CFLAGS=\
-	-O0\
+	-O2\
+	-fomit-frame-pointer \
 	-g\
 	-Wl,-Map,mapfile\
 	-Wl,--defsym -Wl,__MBAR=0xff000000\
@@ -84,7 +85,7 @@ $(1)_OBJS=$(patsubst %,$(1)/objs/%,$(OBJS))
 $(1)/$(APP): $$($(1)_OBJS)
 	@echo CC $$@
 	@$(CC) $$(CFLAGS) -o $$@ $(LIBCMINI)/$(1)/startup.o $$($(1)_OBJS) -L$(LIBCMINI)/$(1) $(LIBS)
-	@$(STRIP) $$@
+	#@$(STRIP) $$@
 endef
 $(foreach DIR,$(TRGTDIRS),$(eval $(call CC_TEMPLATE,$(DIR))))
 
diff --git a/BaS_gcc/tos/pci_test/sources/pci_test.c b/BaS_gcc/tos/pci_test/sources/pci_test.c
index f0d2fd9..8be6826 100644
--- a/BaS_gcc/tos/pci_test/sources/pci_test.c
+++ b/BaS_gcc/tos/pci_test/sources/pci_test.c
@@ -12,6 +12,9 @@
 
 #define SYSCLK 132000
 
+#define KB  1024UL
+#define MB  (KB * KB)
+
 volatile int32_t time, start, end;
 int i;
 
@@ -166,14 +169,17 @@ void do_tests(struct pci_native_driver_interface *pci)
                                               "", "");
             printf("\r\n");
 
-            if (rd->start != 0L)
+            if (rd->start != 0L && rd->start == 0x80000000)
             {
-                hexdump((uint8_t *) rd->start + rd->offset, 128);
+                hexdump((uint8_t *) rd->start + rd->offset, 64);
 
-                memset((uint8_t *) rd-> start + rd->offset, 0, 128);
+                memset((uint8_t *) rd-> start + rd->offset, 0, 128 * MB);
 
                 printf("memory cleared\r\n");
-                hexdump((uint8_t *) rd->start + rd->offset, 128);
+                hexdump((uint8_t *) rd->start + rd->offset, 64);
+
+                memset((uint8_t *) rd->start + rd->offset, 0xaa, 128 * MB);
+                hexdump((uint8_t *) rd->start + rd->offset, 64);
             }
 
             rd = (struct pci_rd *) (((uintptr_t) rd) + (uintptr_t) rd->next);