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ADIv5 header cleanup (+ #defines) 

Update the comments about DP registers and some of the bitfields.
Remove inappropriate (and unused) DP_ZERO declaration.

Add some (currently unused) #defines needed for SWD protocol support,
based on previous patches from Andreas Fritiofson and Simon Qian.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
__archive__
David Brownell 2010-01-21 13:39:22 -08:00
parent 98f7c2127b
commit f06148612b
1 changed files with 27 additions and 7 deletions
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34
src/target/arm_adi_v5.h
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@ -42,22 +42,42 @@
#define JTAG_ACK_OK_FAULT 0x2
#define JTAG_ACK_WAIT 0x1
/* 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 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
/* 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 */
/* Fields of the DP's AP ABORT register */
#define DAPABORT (1 << 0)
#define STKCMPCLR (1 << 1) /* SWD-only */
#define STKERRCLR (1 << 2) /* SWD-only */
#define WDERRCLR (1 << 3) /* SWD-only */
#define ORUNERRCLR (1 << 4) /* SWD-only */
/* 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 SSTICKYCMP (1 << 4)
#define SSTICKYERR (1 << 5)
#define READOK (1 << 6)
#define WDATAERR (1 << 7)
#define READOK (1 << 6) /* SWD-only */
#define WDATAERR (1 << 7) /* SWD-only */
/* 11:8 - mask lanes for pushed compare or verify ops */
/* 21:12 - transaction counter */
#define CDBGRSTREQ (1 << 26)