* Copyright (C) 2005 by Dominic Rath *
* Dominic.Rath@gmx.de *
* *
+ * Copyright (C) 2007,2008 Øyvind Harboe *
+ * oyvind.harboe@zylin.com *
+ * *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
#ifndef XSCALE_H
#define XSCALE_H
-#include "target.h"
-#include "register.h"
#include "armv4_5.h"
#include "armv4_5_mmu.h"
#include "trace.h"
-#include "image.h"
#define XSCALE_COMMON_MAGIC 0x58534341
-typedef struct xscale_jtag_s
-{
- /* position in JTAG scan chain */
- int chain_pos;
-
- /* IR length and instructions */
- int ir_length;
- u32 dbgrx;
- u32 dbgtx;
- u32 ldic;
- u32 dcsr;
-} xscale_jtag_t;
+/* These four JTAG instructions are architecturally defined.
+ * Lengths are core-specific; originally 5 bits, later 7.
+ */
+#define XSCALE_DBGRX 0x02
+#define XSCALE_DBGTX 0x10
+#define XSCALE_LDIC 0x07
+#define XSCALE_SELDCSR 0x09
enum xscale_debug_reason
{
XSCALE_TRACE_ADDRESS = 0x1,
};
-typedef struct xscale_trace_entry_s
+struct xscale_trace_entry
{
- u8 data;
+ uint8_t data;
enum xscale_trace_entry_type type;
-} xscale_trace_entry_t;
+};
-typedef struct xscale_trace_data_s
+struct xscale_trace_data
{
- xscale_trace_entry_t *entries;
+ struct xscale_trace_entry *entries;
int depth;
- u32 chkpt0;
- u32 chkpt1;
- u32 last_instruction;
- struct xscale_trace_data_s *next;
-} xscale_trace_data_t;
+ uint32_t chkpt0;
+ uint32_t chkpt1;
+ uint32_t last_instruction;
+ struct xscale_trace_data *next;
+};
-typedef struct xscale_trace_s
+struct xscale_trace
{
trace_status_t capture_status; /* current state of capture run */
- image_t *image; /* source for target opcodes */
- xscale_trace_data_t *data; /* linked list of collected trace data */
+ struct image_s *image; /* source for target opcodes */
+ struct xscale_trace_data *data; /* linked list of collected trace data */
int buffer_enabled; /* whether trace buffer is enabled */
int buffer_fill; /* maximum number of trace runs to read (-1 for wrap-around) */
int pc_ok;
- u32 current_pc;
+ uint32_t current_pc;
armv4_5_state_t core_state; /* current core state (ARM, Thumb, Jazelle) */
-} xscale_trace_t;
+};
-typedef struct xscale_common_s
+struct xscale_common
{
+ /* armv4/5 common stuff */
+ armv4_5_common_t armv4_5_common;
+
int common_magic;
-
- /* XScale registers (CP15, DBG) */
- reg_cache_t *reg_cache;
- /* pxa250, pxa255, pxa27x, ixp42x, ... */
- char *variant;
+ /* XScale registers (CP15, DBG) */
+ struct reg_cache *reg_cache;
- xscale_jtag_t jtag_info;
-
/* current state of the debug handler */
- int handler_installed;
- int handler_running;
- u32 handler_address;
-
+ uint32_t handler_address;
+
/* target-endian buffers with exception vectors */
- u32 low_vectors[8];
- u32 high_vectors[8];
-
+ uint32_t low_vectors[8];
+ uint32_t high_vectors[8];
+
/* static low vectors */
- u8 static_low_vectors_set; /* bit field with static vectors set by the user */
- u8 static_high_vectors_set; /* bit field with static vectors set by the user */
- u32 static_low_vectors[8];
- u32 static_high_vectors[8];
-
- /* DCache cleaning */
- u32 cache_clean_address;
-
+ uint8_t static_low_vectors_set; /* bit field with static vectors set by the user */
+ uint8_t static_high_vectors_set; /* bit field with static vectors set by the user */
+ uint32_t static_low_vectors[8];
+ uint32_t static_high_vectors[8];
+
+ /* DCache cleaning */
+ uint32_t cache_clean_address;
+
/* whether hold_rst and ext_dbg_break should be set */
int hold_rst;
int external_debug_break;
-
+
/* breakpoint / watchpoint handling */
- int force_hw_bkpts;
int dbr_available;
int dbr0_used;
int dbr1_used;
int ibcr_available;
int ibcr0_used;
int ibcr1_used;
- u32 arm_bkpt;
- u16 thumb_bkpt;
-
- u8 vector_catch;
+ uint32_t arm_bkpt;
+ uint16_t thumb_bkpt;
+
+ uint8_t vector_catch;
+
+ struct xscale_trace trace;
- xscale_trace_t trace;
-
int arch_debug_reason;
-
- /* armv4/5 common stuff */
- armv4_5_common_t armv4_5_common;
-
+
/* MMU/Caches */
- armv4_5_mmu_common_t armv4_5_mmu;
- u32 cp15_control_reg;
-
- /* possible future enhancements that go beyond XScale common stuff */
- void *arch_info;
-} xscale_common_t;
-
-typedef struct xscale_reg_s
+ struct armv4_5_mmu_common armv4_5_mmu;
+ uint32_t cp15_control_reg;
+
+ int fast_memory_access;
+};
+
+static inline struct xscale_common *
+target_to_xscale(struct target_s *target)
+{
+ return container_of(target->arch_info, struct xscale_common,
+ armv4_5_common);
+}
+
+struct xscale_reg
{
int dbg_handler_number;
target_t *target;
-} xscale_reg_t;
+};
enum
{
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