typedef struct {
bool haltreq;
- bool reset;
- bool dmactive;
- enum {
- HARTSTATUS_HALTED,
- HARTSTATUS_RUNNING,
- HARTSTATUS_UNAVAILABLE,
- HARTSTATUS_NOTEXIST
- } hartstatus;
+ bool resumereq;
unsigned hartsel;
+ bool hartreset;
+ bool dmactive;
+ bool ndmreset;
+} dmcontrol_t;
+
+typedef struct {
+ bool impebreak;
+ bool allnonexistant;
+ bool anynonexistant;
+ bool allunavail;
+ bool anyunavail;
+ bool allrunning;
+ bool anyrunning;
+ bool allhalted;
+ bool anyhalted;
+ bool allresumeack;
+ bool anyresumeack;
bool authenticated;
bool authbusy;
- enum {
- AUTHTYPE_NOAUTH,
- AUTHTYPE_PASSWORD,
- AUTHTYPE_CHALLENGE
- } authtype;
+ bool cfgstrvalid;
unsigned version;
-} dmcontrol_t;
+} dmstatus_t;
-typedef struct {
- bool autoexec7;
- bool autoexec6;
- bool autoexec5;
- bool autoexec4;
- bool autoexec3;
- bool autoexec2;
- bool autoexec1;
- bool autoexec0;
- enum {
+typedef enum cmderr {
CMDERR_NONE = 0,
CMDERR_BUSY = 1,
CMDERR_NOTSUP = 2,
CMDERR_EXCEPTION = 3,
CMDERR_HALTRESUME = 4,
- CMDERR_OTHER = 7
- } cmderr;
+ CMDERR_OTHER = 7
+} cmderr_t;
+
+typedef struct {
bool busy;
unsigned datacount;
+ unsigned progbufsize;
+ cmderr_t cmderr;
} abstractcs_t;
-class debug_module_data_t : public abstract_device_t
-{
- public:
- debug_module_data_t();
-
- bool load(reg_t addr, size_t len, uint8_t* bytes);
- bool store(reg_t addr, size_t len, const uint8_t* bytes);
-
- uint32_t read32(reg_t addr) const;
- void write32(reg_t addr, uint32_t value);
+typedef struct {
+ unsigned autoexecprogbuf;
+ unsigned autoexecdata;
+} abstractauto_t;
- uint8_t data[DEBUG_EXCHANGE_SIZE];
-};
+typedef struct {
+ unsigned version;
+ bool readonaddr;
+ unsigned sbaccess;
+ bool autoincrement;
+ bool readondata;
+ unsigned error;
+ unsigned asize;
+ bool access128;
+ bool access64;
+ bool access32;
+ bool access16;
+ bool access8;
+} sbcs_t;
class debug_module_t : public abstract_device_t
{
public:
- debug_module_t(sim_t *sim);
+ /*
+ * If require_authentication is true, then a debugger must authenticate as
+ * follows:
+ * 1. Read a 32-bit value from authdata:
+ * 2. Write the value that was read back, plus one, to authdata.
+ */
+ debug_module_t(sim_t *sim, unsigned progbufsize, unsigned max_bus_master_bits,
+ bool require_authentication);
+ ~debug_module_t();
void add_device(bus_t *bus);
bool load(reg_t addr, size_t len, uint8_t* bytes);
bool store(reg_t addr, size_t len, const uint8_t* bytes);
- void set_interrupt(uint32_t hartid) {
- interrupt.insert(hartid);
- }
- void clear_interrupt(uint32_t hartid) {
- interrupt.erase(hartid);
- }
- bool get_interrupt(uint32_t hartid) const {
- return interrupt.find(hartid) != interrupt.end();
- }
-
- void set_halt_notification(uint32_t hartid) {
- halt_notification.insert(hartid);
- }
- void clear_halt_notification(uint32_t hartid) {
- halt_notification.erase(hartid);
- }
- bool get_halt_notification(uint32_t hartid) const {
- return halt_notification.find(hartid) != halt_notification.end();
- }
-
// Debug Module Interface that the debugger (in our case through JTAG DTM)
// uses to access the DM.
// Return true for success, false for failure.
bool dmi_write(unsigned address, uint32_t value);
private:
+ static const unsigned datasize = 2;
+ // Size of program_buffer in 32-bit words, as exposed to the rest of the
+ // world.
+ unsigned progbufsize;
+ // Actual size of the program buffer, which is 1 word bigger than we let on
+ // to implement the implicit ebreak at the end.
+ unsigned program_buffer_bytes;
+ unsigned max_bus_master_bits;
+ bool require_authentication;
+ static const unsigned debug_data_start = 0x380;
+ unsigned debug_progbuf_start;
+
+ static const unsigned debug_abstract_size = 2;
+ unsigned debug_abstract_start;
+
+ static const unsigned hartsellen = 10;
+
sim_t *sim;
- // Track which interrupts from module to debugger are set.
- std::set<uint32_t> interrupt;
- // Track which halt notifications from debugger to module are set.
- std::set<uint32_t> halt_notification;
- uint8_t debug_rom_entry[DEBUG_ROM_ENTRY_SIZE];
- uint8_t debug_rom_code[DEBUG_ROM_CODE_SIZE];
- uint8_t debug_rom_exception[DEBUG_ROM_EXCEPTION_SIZE];
+
+ uint8_t debug_rom_whereto[4];
+ uint8_t debug_abstract[debug_abstract_size * 4];
+ uint8_t *program_buffer;
+ uint8_t dmdata[datasize * 4];
+
bool halted[1024];
- debug_module_data_t dmdata;
+ bool resumeack[1024];
+ uint8_t debug_rom_flags[1024];
void write32(uint8_t *rom, unsigned int index, uint32_t value);
uint32_t read32(uint8_t *rom, unsigned int index);
- static const unsigned progsize = 8;
+ void sb_autoincrement();
+ void sb_read();
+ void sb_write();
+ unsigned sb_access_bits();
dmcontrol_t dmcontrol;
+ dmstatus_t dmstatus;
abstractcs_t abstractcs;
- uint32_t ibuf[progsize];
+ abstractauto_t abstractauto;
+ uint32_t command;
+
+ sbcs_t sbcs;
+ uint32_t sbaddress[4];
+ uint32_t sbdata[4];
+
+ uint32_t challenge;
+ const uint32_t secret = 1;
processor_t *current_proc() const;
void reset();
- bool perform_abstract_command(uint32_t command);
+ bool perform_abstract_command();
};
#endif