From 3b6d2ac28afc1c987e480790fff1b652f3ade5cd Mon Sep 17 00:00:00 2001
From: Amaury Pouly <amaury.pouly@gmail.com>
Date: Tue, 10 Sep 2013 23:07:40 +0200
Subject: hwstub: add delay functions, and plain binary/sb file generation

Change-Id: Idbedb9277b355edcd93975ec5a268428c7b89633
---
 utils/hwstub/stub/hwstub.make   |  7 ++++++-
 utils/hwstub/stub/stmp/Makefile | 10 ++++++++--
 utils/hwstub/stub/stmp/target.c | 15 +++++++++++++++
 utils/hwstub/stub/target.h      |  4 ++++
 utils/hwstub/stub/usb_drv_arc.c |  5 ++++-
 5 files changed, 37 insertions(+), 4 deletions(-)

diff --git a/utils/hwstub/stub/hwstub.make b/utils/hwstub/stub/hwstub.make
index b46a2736ef..d40fa87755 100644
--- a/utils/hwstub/stub/hwstub.make
+++ b/utils/hwstub/stub/hwstub.make
@@ -14,9 +14,10 @@ OBJ=$(SRC:.c=.o)
 OBJ:=$(OBJ:.S=.o)
 OBJ_EXCEPT_CRT0=$(filter-out $(BUILD_DIR)/crt0.o,$(OBJ))
 EXEC_ELF=$(BUILD_DIR)/hwstub.elf
+EXEC_BIN=$(BUILD_DIR)/hwstub.bin
 DEPS=$(foreach obj,$(OBJ),$(obj).d)
 
-EXEC=$(EXEC_ELF)
+EXEC+=$(EXEC_ELF) $(EXEC_BIN)
 
 SILENT?=@
 PRINTS=$(SILENT)$(call info,$(1))
@@ -44,6 +45,10 @@ $(TMP_LDS): $(LINKER_FILE)
 $(EXEC_ELF): $(OBJ) $(TMP_LDS)
 	$(call PRINTS,LD $(@F))
 	$(SILENT)$(LD) $(LDFLAGS) -o $@ $(OBJ_EXCEPT_CRT0)
+	
+$(EXEC_BIN): $(EXEC_ELF)
+	$(call PRINTS,OC $(@F))
+	$(SILENT)$(OC) -O binary $< $@
 
 clean:
 	$(SILENT)rm -rf $(OBJ) $(DEPS) $(EXEC) $(TMP_LDS) $(TMP_MAP)
diff --git a/utils/hwstub/stub/stmp/Makefile b/utils/hwstub/stub/stmp/Makefile
index 14e6d0fbba..3ac7e3bbd4 100644
--- a/utils/hwstub/stub/stmp/Makefile
+++ b/utils/hwstub/stub/stmp/Makefile
@@ -5,10 +5,16 @@ CC=arm-elf-eabi-gcc
 LD=arm-elf-eabi-gcc
 AS=arm-elf-eabi-gcc
 OC=arm-elf-eabi-objcopy
+SBTOELF=$(CURDIR)/../../../imxtools/sbtools/elftosb
 DEFINES=
 INCLUDES=-I$(CURDIR)
 GCCOPTS=-mcpu=arm926ej-s
 BUILD_DIR=$(CURDIR)/build/
 ROOT_DIR=$(CURDIR)/..
- 
-include ../hwstub.make
\ No newline at end of file
+EXEC=$(BUILD_DIR)/hwstub.sb
+
+include ../hwstub.make
+
+$(BUILD_DIR)/hwstub.sb: $(EXEC_BIN)
+	$(call PRINTS,SBTOELF $(@F))
+	$(SILENT)$(SBTOELF) -z -c hwstub.db -o $@ $<
\ No newline at end of file
diff --git a/utils/hwstub/stub/stmp/target.c b/utils/hwstub/stub/stmp/target.c
index 390480a71c..9b005063bd 100644
--- a/utils/hwstub/stub/stmp/target.c
+++ b/utils/hwstub/stub/stmp/target.c
@@ -273,3 +273,18 @@ void target_exit(void)
             return;
     }
 }
+
+void target_udelay(int us)
+{
+    uint32_t cur = HW_DIGCTL_MICROSECONDS;
+    uint32_t end = cur + us;
+    if(cur < end)
+        while(HW_DIGCTL_MICROSECONDS < end) {}
+    else
+        while(HW_DIGCTL_MICROSECONDS >= cur) {}
+}
+
+void target_mdelay(int ms)
+{
+    return target_udelay(ms * 1000);
+}
diff --git a/utils/hwstub/stub/target.h b/utils/hwstub/stub/target.h
index 56c960741f..43151e9a34 100644
--- a/utils/hwstub/stub/target.h
+++ b/utils/hwstub/stub/target.h
@@ -31,5 +31,9 @@ void target_exit(void);
 int target_get_info(int info, void **buffer);
 /* set atexit action or return -1 on error */
 int target_atexit(int action);
+/* Wait a very short time (us<=1000) */
+void target_udelay(int us);
+/* Wait for a short time (ms <= 1000) */
+void target_mdelay(int ms);
 
 #endif /* __TARGET_H__ */
diff --git a/utils/hwstub/stub/usb_drv_arc.c b/utils/hwstub/stub/usb_drv_arc.c
index 32275b6adb..ab87be8a4c 100644
--- a/utils/hwstub/stub/usb_drv_arc.c
+++ b/utils/hwstub/stub/usb_drv_arc.c
@@ -23,6 +23,7 @@
 #include "usb_drv.h"
 #include "config.h"
 #include "memory.h"
+#include "target.h"
 
 #define MAX_PKT_SIZE        1024
 #define MAX_PKT_SIZE_EP0    64
@@ -323,9 +324,11 @@ void usb_drv_init(void)
     /* we don't know if USB was connected or not. In USB recovery mode it will
      * but in other cases it might not be. In doubt, disconnect */
     REG_USBCMD &= ~USBCMD_RUN;
+    /* wait a short time for the host to realise */
+    target_mdelay(50);
     /* reset the controller */
     REG_USBCMD |= USBCMD_CTRL_RESET;
-    while (REG_USBCMD & USBCMD_CTRL_RESET);
+    while(REG_USBCMD & USBCMD_CTRL_RESET);
     /* put it in device mode */
     REG_USBMODE = USBMODE_CTRL_MODE_DEVICE;
     /* reset address */
-- 
cgit v1.2.3