static void stm8_enable_watchpoints(struct target *target);
static int stm8_unset_watchpoint(struct target *target,
struct watchpoint *watchpoint);
+static int (*adapter_speed)(int speed);
+extern struct adapter_driver *adapter_driver;
static const struct {
unsigned id;
return retval;
}
+static int stm8_speed(int speed)
+{
+ int retval;
+ uint8_t csr;
+
+ LOG_DEBUG("stm8_speed: %d", speed);
+
+ csr = SAFE_MASK | SWIM_DM;
+ if (speed >= SWIM_FREQ_HIGH)
+ csr |= HS;
+
+ LOG_DEBUG("writing B0 to SWIM_CSR (SAFE_MASK + SWIM_DM + HS:%d)", csr & HS ? 1 : 0);
+ retval = stm8_write_u8(NULL, SWIM_CSR, csr);
+ if (retval != ERROR_OK)
+ return retval;
+ return adapter_speed(speed);
+}
+
static int stm8_init(struct command_context *cmd_ctx, struct target *target)
{
+ /*
+ * FIXME: this is a temporarily hack that needs better implementation.
+ * Being the only overwrite of adapter_driver, it prevents declaring const
+ * the struct adapter_driver.
+ * intercept adapter_driver->speed() calls
+ */
+ adapter_speed = adapter_driver->speed;
+ adapter_driver->speed = stm8_speed;
+
stm8_build_reg_cache(target);
return ERROR_OK;
if (!target_was_examined(target)) {
if (!stm8->swim_configured) {
- /* set SWIM_CSR = 0xa0 (enable mem access & mask reset) */
- LOG_DEBUG("writing A0 to SWIM_CSR (SAFE_MASK + SWIM_DM)");
- retval = stm8_write_u8(target, SWIM_CSR, SAFE_MASK + SWIM_DM);
- if (retval != ERROR_OK)
- return retval;
- /* set high speed */
- LOG_DEBUG("writing B0 to SWIM_CSR (SAFE_MASK + SWIM_DM + HS)");
- retval = stm8_write_u8(target, SWIM_CSR, SAFE_MASK + SWIM_DM + HS);
- if (retval != ERROR_OK)
- return retval;
- jtag_config_khz(SWIM_FREQ_HIGH);
stm8->swim_configured = true;
/*
Now is the time to deassert reset if connect_under_reset.