* You should have received a copy of the GNU General Public License *
* along with this program; if not, write to the *
* Free Software Foundation, Inc., *
- * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. *
***************************************************************************/
+
#ifndef ARM_ADI_V5_H
#define ARM_ADI_V5_H
#define JTAG_DP_APACC 0xB
/* three-bit ACK values for SWD access (sent LSB first) */
-#define SWD_ACK_OK 0x4
-#define SWD_ACK_WAIT 0x2
-#define SWD_ACK_FAULT 0x1
+#define SWD_ACK_OK 0x1
+#define SWD_ACK_WAIT 0x2
+#define SWD_ACK_FAULT 0x4
#define DPAP_WRITE 0
#define DPAP_READ 1
+#define BANK_REG(bank, reg) (((bank) << 4) | (reg))
+
/* A[3:0] for DP registers; A[1:0] are always zero.
* - JTAG accesses all of these via JTAG_DP_DPACC, except for
* IDCODE (JTAG_DP_IDCODE) and ABORT (JTAG_DP_ABORT).
* - SWD accesses these directly, sometimes needing SELECT.CTRLSEL
*/
-#define DP_IDCODE 0 /* SWD: read */
-#define DP_ABORT 0 /* SWD: write */
-#define DP_CTRL_STAT 0x4 /* r/w */
-#define DP_WCR 0x4 /* SWD: r/w (mux CTRLSEL) */
-#define DP_RESEND 0x8 /* SWD: read */
-#define DP_SELECT 0x8 /* JTAG: r/w; SWD: write */
-#define DP_RDBUFF 0xC /* read-only */
+#define DP_IDCODE BANK_REG(0x0, 0x0) /* SWD: read */
+#define DP_ABORT BANK_REG(0x0, 0x0) /* SWD: write */
+#define DP_CTRL_STAT BANK_REG(0x0, 0x4) /* r/w */
+#define DP_RESEND BANK_REG(0x0, 0x8) /* SWD: read */
+#define DP_SELECT BANK_REG(0x0, 0x8) /* JTAG: r/w; SWD: write */
+#define DP_RDBUFF BANK_REG(0x0, 0xC) /* read-only */
+#define DP_WCR BANK_REG(0x1, 0x4) /* SWD: r/w */
+
+#define WCR_TO_TRN(wcr) ((uint32_t)(1 + (3 & ((wcr)) >> 8))) /* 1..4 clocks */
+#define WCR_TO_PRESCALE(wcr) ((uint32_t)(7 & ((wcr)))) /* impl defined */
/* Fields of the DP's AP ABORT register */
#define DAPABORT (1 << 0)
/* 30:24 - implementation-defined! */
#define CSW_HPROT (1 << 25) /* ? */
#define CSW_MASTER_DEBUG (1 << 29) /* ? */
+#define CSW_SPROT (1 << 30)
#define CSW_DBGSWENABLE (1 << 31)
/**
* as part of setting up a debug session (if all the dual-role JTAG/SWD
* signals are available).
*/
-struct adiv5_dap
-{
+struct adiv5_dap {
const struct dap_ops *ops;
struct arm_jtag *jtag_info;
/* Control config */
uint32_t dp_ctrl_stat;
+ uint32_t apcsw[256];
+ uint32_t apsel;
+
/**
* Cache for DP_SELECT bits identifying the current AP. A DAP may
* connect to multiple APs, such as one MEM-AP for general access,
* another reserved for accessing debug modules, and a JTAG-DP.
* "-1" indicates no cached value.
*/
- uint32_t apsel;
+ uint32_t ap_current;
/**
* Cache for DP_SELECT bits identifying the current four-word AP
*/
uint32_t ap_bank_value;
+ /**
+ * Cache for DP_SELECT bits identifying the current four-word DP
+ * register bank. This caches DP register addresss bits 7:4; JTAG
+ * and SWD access primitves pass address bits 3:2; bits 1:0 are zero.
+ */
+ uint32_t dp_bank_value;
+
/**
* Cache for (MEM-AP) AP_REG_CSW register value. This is written to
* configure an access mode, such as autoincrementing AP_REG_TAR during
/* information about current pending SWjDP-AHBAP transaction */
uint8_t ack;
+ /**
+ * Holds the pointer to the destination word for the last queued read,
+ * for use with posted AP read sequence optimization.
+ */
+ uint32_t *last_read;
+
/**
* Configures how many extra tck clocks are added after starting a
* MEM-AP access before we try to read its status (and/or result).
*/
uint32_t memaccess_tck;
+
/* Size of TAR autoincrement block, ARM ADI Specification requires at least 10 bits */
uint32_t tar_autoincr_block;
+
+ /* true if packed transfers are supported by the MEM-AP */
+ bool packed_transfers;
+
+ /* true if unaligned memory access is not supported by the MEM-AP */
+ bool unaligned_access_bad;
+
+ /* The TI TMS470 and TMS570 series processors use a BE-32 memory ordering
+ * despite lack of support in the ARMv7 architecture. Memory access through
+ * the AHB-AP has strange byte ordering these processors, and we need to
+ * swizzle appropriately. */
+ bool ti_be_32_quirks;
};
/**
* both JTAG and SWD transports. All submitted transactions are logically
* queued, until the queue is executed by run(). Some implementations might
* execute transactions as soon as they're submitted, but no status is made
- * availablue until run().
+ * available until run().
*/
struct dap_ops {
/** If the DAP transport isn't SWD, it must be JTAG. Upper level
*/
bool is_swd;
- /** Reads the DAP's IDCODe register. */
- int (*queue_idcode_read)(struct adiv5_dap *dap,
- uint8_t *ack, uint32_t *data);
-
/** DP register read. */
int (*queue_dp_read)(struct adiv5_dap *dap, unsigned reg,
uint32_t *data);
/** AP register write. */
int (*queue_ap_write)(struct adiv5_dap *dap, unsigned reg,
uint32_t data);
+
/** AP operation abort. */
int (*queue_ap_abort)(struct adiv5_dap *dap, uint8_t *ack);
int (*run)(struct adiv5_dap *dap);
};
-/**
- * Queue an IDCODE register read. This is primarily useful for SWD
- * transports, where it is required as part of link initialization.
- * (For JTAG, this register is read as part of scan chain setup.)
- *
- * @param dap The DAP used for reading.
- * @param ack Pointer to where transaction status will be stored.
- * @param data Pointer saying where to store the IDCODE value.
- *
- * @return ERROR_OK for success, else a fault code.
+/*
+ * Access Port types
*/
-static inline int dap_queue_idcode_read(struct adiv5_dap *dap,
- uint8_t *ack, uint32_t *data)
-{
- assert(dap->ops != NULL);
- return dap->ops->queue_idcode_read(dap, ack, data);
-}
+enum ap_type {
+ AP_TYPE_AHB_AP = 0x01, /* AHB Memory-AP */
+ AP_TYPE_APB_AP = 0x02, /* APB Memory-AP */
+ AP_TYPE_JTAG_AP = 0x10 /* JTAG-AP - JTAG master for controlling other JTAG devices */
+};
/**
* Queue a DP register read.
* @param dap The DAP used for reading.
* @param reg The two-bit number of the DP register being read.
* @param data Pointer saying where to store the register's value
- * (in host endianness).
+ * (in host endianness).
*
* @return ERROR_OK for success, else a fault code.
*/
* @param dap The DAP used for reading.
* @param reg The number of the AP register being read.
* @param data Pointer saying where to store the register's value
- * (in host endianness).
+ * (in host endianness).
*
* @return ERROR_OK for success, else a fault code.
*/
return dap->ops->run(dap);
}
+static inline int dap_dp_read_atomic(struct adiv5_dap *dap, unsigned reg,
+ uint32_t *value)
+{
+ int retval;
+
+ retval = dap_queue_dp_read(dap, reg, value);
+ if (retval != ERROR_OK)
+ return retval;
+
+ return dap_run(dap);
+}
+
+static inline int dap_dp_poll_register(struct adiv5_dap *dap, unsigned reg,
+ uint32_t mask, uint32_t value, int timeout)
+{
+ assert(timeout > 0);
+ assert((value & mask) == value);
+
+ int ret;
+ uint32_t regval;
+ LOG_DEBUG("DAP: poll %x, mask 0x08%" PRIx32 ", value 0x%08" PRIx32,
+ reg, mask, value);
+ do {
+ ret = dap_dp_read_atomic(dap, reg, ®val);
+ if (ret != ERROR_OK)
+ return ret;
+
+ if ((regval & mask) == value)
+ break;
+
+ alive_sleep(10);
+ } while (--timeout);
+
+ if (!timeout) {
+ LOG_DEBUG("DAP: poll %x timeout", reg);
+ return ERROR_FAIL;
+ } else {
+ return ERROR_OK;
+ }
+}
+
/** Accessor for currently selected DAP-AP number (0..255) */
static inline uint8_t dap_ap_get_select(struct adiv5_dap *swjdp)
{
- return (uint8_t)(swjdp ->apsel >> 24);
+ return (uint8_t)(swjdp->ap_current >> 24);
}
/* AP selection applies to future AP transactions */
-void dap_ap_select(struct adiv5_dap *dap,uint8_t apsel);
+void dap_ap_select(struct adiv5_dap *dap, uint8_t ap);
/* Queued AP transactions */
int dap_setup_accessport(struct adiv5_dap *swjdp,
int mem_ap_write_atomic_u32(struct adiv5_dap *swjdp,
uint32_t address, uint32_t value);
-/* MEM-AP memory mapped bus block transfers */
-int mem_ap_read_buf_u8(struct adiv5_dap *swjdp,
- uint8_t *buffer, int count, uint32_t address);
-int mem_ap_read_buf_u16(struct adiv5_dap *swjdp,
- uint8_t *buffer, int count, uint32_t address);
-int mem_ap_read_buf_u32(struct adiv5_dap *swjdp,
- uint8_t *buffer, int count, uint32_t address);
-
-int mem_ap_write_buf_u8(struct adiv5_dap *swjdp,
- uint8_t *buffer, int count, uint32_t address);
-int mem_ap_write_buf_u16(struct adiv5_dap *swjdp,
- uint8_t *buffer, int count, uint32_t address);
-int mem_ap_write_buf_u32(struct adiv5_dap *swjdp,
- uint8_t *buffer, int count, uint32_t address);
+/* Queued MEM-AP memory mapped single word transfers with selection of ap */
+int mem_ap_sel_read_u32(struct adiv5_dap *swjdp, uint8_t ap,
+ uint32_t address, uint32_t *value);
+int mem_ap_sel_write_u32(struct adiv5_dap *swjdp, uint8_t ap,
+ uint32_t address, uint32_t value);
+
+/* Synchronous MEM-AP memory mapped single word transfers with selection of ap */
+int mem_ap_sel_read_atomic_u32(struct adiv5_dap *swjdp, uint8_t ap,
+ uint32_t address, uint32_t *value);
+int mem_ap_sel_write_atomic_u32(struct adiv5_dap *swjdp, uint8_t ap,
+ uint32_t address, uint32_t value);
+
+/* Synchronous MEM-AP memory mapped bus block transfers */
+int mem_ap_read(struct adiv5_dap *dap, uint8_t *buffer, uint32_t size,
+ uint32_t count, uint32_t address, bool addrinc);
+int mem_ap_write(struct adiv5_dap *dap, const uint8_t *buffer, uint32_t size,
+ uint32_t count, uint32_t address, bool addrinc);
+
+/* Synchronous MEM-AP memory mapped bus block transfers with selection of ap */
+int mem_ap_sel_read_buf(struct adiv5_dap *swjdp, uint8_t ap,
+ uint8_t *buffer, uint32_t size, uint32_t count, uint32_t address);
+int mem_ap_sel_write_buf(struct adiv5_dap *swjdp, uint8_t ap,
+ const uint8_t *buffer, uint32_t size, uint32_t count, uint32_t address);
+
+/* Synchronous, non-incrementing buffer functions for accessing fifos, with
+ * selection of ap */
+int mem_ap_sel_read_buf_noincr(struct adiv5_dap *swjdp, uint8_t ap,
+ uint8_t *buffer, uint32_t size, uint32_t count, uint32_t address);
+int mem_ap_sel_write_buf_noincr(struct adiv5_dap *swjdp, uint8_t ap,
+ const uint8_t *buffer, uint32_t size, uint32_t count, uint32_t address);
/* Initialisation of the debug system, power domains and registers */
int ahbap_debugport_init(struct adiv5_dap *swjdp);
/* Probe the AP for ROM Table location */
-int dap_get_debugbase(struct adiv5_dap *dap, int apsel,
+int dap_get_debugbase(struct adiv5_dap *dap, int ap,
uint32_t *dbgbase, uint32_t *apid);
+/* Probe Access Ports to find a particular type */
+int dap_find_ap(struct adiv5_dap *dap,
+ enum ap_type type_to_find,
+ uint8_t *ap_num_out);
+
+/* Lookup CoreSight component */
+int dap_lookup_cs_component(struct adiv5_dap *dap, int ap,
+ uint32_t dbgbase, uint8_t type, uint32_t *addr);
+
struct target;
/* Put debug link into SWD mode */
projects / openocd / blobdiff