diff options
Diffstat (limited to 'src/target/arm_adi_v5.h')
| -rw-r--r-- | src/target/arm_adi_v5.h | 48 |
1 files changed, 37 insertions, 11 deletions
diff --git a/src/target/arm_adi_v5.h b/src/target/arm_adi_v5.h index a78193c..2a09684 100644 --- a/src/target/arm_adi_v5.h +++ b/src/target/arm_adi_v5.h @@ -23,6 +23,13 @@ #ifndef ARM_ADI_V5_H #define ARM_ADI_V5_H +/** + * @file + * This defines formats and data structures used to talk to ADIv5 entities. + * Those include a DAP, different types of Debug Port (DP), and memory mapped + * resources accessed through a MEM-AP. + */ + #include "arm_jtag.h" #define DAP_IR_DPACC 0xA @@ -30,14 +37,22 @@ #define DPAP_WRITE 0 #define DPAP_READ 1 + +/* A[3:0] for DP registers (for JTAG, stored in DPACC) */ #define DP_ZERO 0 #define DP_CTRL_STAT 0x4 #define DP_SELECT 0x8 #define DP_RDBUFF 0xC +/* Fields of the DP's CTRL/STAT register */ #define CORUNDETECT (1 << 0) #define SSTICKYORUN (1 << 1) +/* 3:2 - transaction mode (e.g. pushed compare) */ #define SSTICKYERR (1 << 5) +#define READOK (1 << 6) +#define WDATAERR (1 << 7) +/* 11:8 - mask lanes for pushed compare or verify ops */ +/* 21:12 - transaction counter */ #define CDBGRSTREQ (1 << 26) #define CDBGRSTACK (1 << 27) #define CDBGPWRUPREQ (1 << 28) @@ -45,26 +60,35 @@ #define CSYSPWRUPREQ (1 << 30) #define CSYSPWRUPACK (1 << 31) -#define AP_REG_CSW 0x00 +/* MEM-AP register addresses */ +/* TODO: rename as MEM_AP_REG_* */ +#define AP_REG_CSW 0x00 #define AP_REG_TAR 0x04 #define AP_REG_DRW 0x0C #define AP_REG_BD0 0x10 #define AP_REG_BD1 0x14 #define AP_REG_BD2 0x18 #define AP_REG_BD3 0x1C -#define AP_REG_DBGROMA 0xF8 +#define AP_REG_CFG 0xF4 /* big endian? */ +#define AP_REG_BASE 0xF8 + +/* Generic AP register address */ #define AP_REG_IDR 0xFC +/* Fields of the MEM-AP's CSW register */ #define CSW_8BIT 0 #define CSW_16BIT 1 #define CSW_32BIT 2 - #define CSW_ADDRINC_MASK (3 << 4) #define CSW_ADDRINC_OFF 0 #define CSW_ADDRINC_SINGLE (1 << 4) #define CSW_ADDRINC_PACKED (2 << 4) -#define CSW_HPROT (1 << 25) -#define CSW_MASTER_DEBUG (1 << 29) +#define CSW_DEVICE_EN (1 << 6) +#define CSW_TRIN_PROG (1 << 7) +#define CSW_SPIDEN (1 << 23) +/* 30:24 - implementation-defined! */ +#define CSW_HPROT (1 << 25) /* ? */ +#define CSW_MASTER_DEBUG (1 << 29) /* ? */ #define CSW_DBGSWENABLE (1 << 31) /* transaction mode */ @@ -74,12 +98,14 @@ /* Freerunning transactions with delays and overrun checking */ #define TRANS_MODE_COMPOSITE 2 -struct swjdp_reg -{ - int addr; - struct arm_jtag *jtag_info; -}; - +/** + * This represents an ARM Debug Interface (v5) Debug Access Port (DAP). + * A DAP has two types of component: one Debug Port (DP), which is a + * transport agent; and at least one Access Port (AP), controlling + * resource access. Most common is a MEM-AP, for memory access. + * + * @todo Rename "swjdp_common" as "dap". Use of SWJ-DP is optional! + */ struct swjdp_common { struct arm_jtag *jtag_info; |