zy1000: add support for Linux host

used /dev/mem and mmem() to memory map JTAG registers
into user space and used new configure options to exclude
eCos specific code.

Signed-off-by: Øyvind Harboe <oyvind.harboe@zylin.com>

2 files changed, 45 insertions, 6 deletions

diff --git a/src/jtag/zy1000/jtag_minidriver.h b/src/jtag/zy1000/jtag_minidriver.h
index 4e99d3cb..543fd9bb 100644
--- a/src/jtag/zy1000/jtag_minidriver.h
+++ b/src/jtag/zy1000/jtag_minidriver.h
@@ -21,12 +21,19 @@
 #define TEST_MANUAL() 0
 #define VERBOSE(a)
 
-#if BUILD_ECOSBOARD
+#if BUILD_ZY1000_MASTER
 
+#if BUILD_ECOSBOARD
 #include <cyg/hal/hal_io.h>             // low level i/o
 #include <cyg/hal/hal_intr.h>             // low level i/o
 #define ZY1000_PEEK(a, b) HAL_READ_UINT32(a, b)
 #define ZY1000_POKE(a, b) HAL_WRITE_UINT32(a, b)
+#else
+#define ZY1000_PEEK(a, b) do {b = *( ( volatile uint32_t *)(a) );} while (0)
+#define ZY1000_POKE(a, b) do {*( ( volatile uint32_t *)(a) ) = b;} while (0)
+extern volatile void *zy1000_jtag_master;
+#define ZY1000_JTAG_BASE ((unsigned long)zy1000_jtag_master)
+#endif
 
 #else
 
@@ -41,7 +48,7 @@ extern uint32_t zy1000_tcpin(uint32_t address);
 
 
 
-#if BUILD_ECOSBOARD
+#if BUILD_ZY1000_MASTER
 // FIFO empty?
 static __inline__ void waitIdle(void)
 {
@@ -228,7 +235,7 @@ static __inline__ void interface_jtag_add_dr_out(struct jtag_tap *target_tap,
 	}
 }
 
-#if BUILD_ECOSBOARD
+#if BUILD_ZY1000_MASTER
 #define interface_jtag_add_callback(callback, in) callback(in)
 #define interface_jtag_add_callback4(callback, in, data1, data2, data3) jtag_set_error(callback(in, data1, data2, data3))
 #else
diff --git a/src/jtag/zy1000/zy1000.c b/src/jtag/zy1000/zy1000.c
index 3ecd0f9b..c939d7f2 100644
--- a/src/jtag/zy1000/zy1000.c
+++ b/src/jtag/zy1000/zy1000.c
@@ -321,7 +321,7 @@ COMMAND_HANDLER(handle_power_command)
 	return ERROR_OK;
 }
 
-#if !BUILD_ECOSBOARD
+#if !BUILD_ZY1000_MASTER
 static char *tcp_server = "notspecified";
 static int jim_zy1000_server(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
 {
@@ -1002,6 +1002,7 @@ static const struct command_registration zy1000_commands[] = {
 			"With no arguments, prints status.",
 		.usage = "('on'|'off)",
 	},
+#if BUILD_ZY1000_MASTER
 #if BUILD_ECOSBOARD
 	{
 		.name = "zy1000_version",
@@ -1010,6 +1011,7 @@ static const struct command_registration zy1000_commands[] = {
 		.help = "Print version info for zy1000.",
 		.usage = "['openocd'|'zy1000'|'date'|'time'|'pcb'|'fpga']",
 	},
+#endif
 #else
 	{
 		.name = "zy1000_server",
@@ -1038,6 +1040,7 @@ static const struct command_registration zy1000_commands[] = {
 };
 
 
+#if !BUILD_ZY1000_MASTER || BUILD_ECOSBOARD
 static int tcp_ip = -1;
 
 /* Write large packets if we can */
@@ -1106,6 +1109,7 @@ static bool readLong(uint32_t *out_data)
 	*out_data = data;
 	return true;
 }
+#endif
 
 enum ZY1000_CMD
 {
@@ -1116,7 +1120,7 @@ enum ZY1000_CMD
 };
 
 
-#if !BUILD_ECOSBOARD
+#if !BUILD_ZY1000_MASTER
 
 #include <sys/socket.h> /* for socket(), connect(), send(), and recv() */
 #include <arpa/inet.h>  /* for sockaddr_in and inet_addr() */
@@ -1566,21 +1570,49 @@ static void watchdog_server(cyg_addrword_t data)
 }
 #endif
 
+#endif
+
+#if BUILD_ZY1000_MASTER
 int interface_jtag_add_sleep(uint32_t us)
 {
 	jtag_sleep(us);
 	return ERROR_OK;
 }
-
 #endif
 
+#if BUILD_ZY1000_MASTER && !BUILD_ECOSBOARD
+volatile void *zy1000_jtag_master;
+#include <sys/mman.h>
+#endif
 
 int zy1000_init(void)
 {
 #if BUILD_ECOSBOARD
 	LOG_USER("%s", ZYLIN_OPENOCD_VERSION);
+#else
+	int fd;
+ 	if((fd = open("/dev/mem", O_RDWR | O_SYNC)) == -1)
+ 	{
+ 		LOG_ERROR("No access to /dev/mem");
+ 		return ERROR_FAIL;
+ 	}
+#ifndef REGISTERS_BASE
+#define REGISTERS_BASE 0x9002000
+#define REGISTERS_SPAN 128
+#endif
+    
+    zy1000_jtag_master = mmap(0, REGISTERS_SPAN, PROT_READ | PROT_WRITE, MAP_SHARED, fd, REGISTERS_BASE);
+    
+    if(zy1000_jtag_master == (void *) -1) 
+    {
+	    close(fd);
+ 		LOG_ERROR("No access to /dev/mem");
+ 		return ERROR_FAIL;
+    } 
 #endif
 
+
+
 	ZY1000_POKE(ZY1000_JTAG_BASE + 0x10, 0x30); // Turn on LED1 & LED2
 
 	setPower(true); // on by default