add debug_protocol.hpp

debug/debug.txt

@@ -0,0 +1,10 @@
+dreamcast | pc
+
+break 1   → [break state]
+          ← ackn 1
+
+regs 2    →
+          ← ackn 2
+
+          ← regs -1
+regs -1   →

debug/debug_protocol.hpp

@@ -0,0 +1,59 @@
+#include <stdint.h>
+#include <stddef.h>
+
+namespace debug_protocol {
+
+consteval uint32_t gen_cmd(const char * s)
+{
+  uint32_t x = 0
+    | s[0] << 0
+    | s[1] << 8
+    | s[2] << 16
+    | s[3] << 24;
+
+  x ^= x << 13;
+  x ^= x >> 17;
+  x ^= x << 5;
+
+  return x;
+}
+
+template <typename T>
+struct frame {
+  uint32_t command;
+  uint32_t sequence;
+  T data;
+  uint32_t crc;
+};
+
+static_assert((sizeof (frame<char[0]>)) == 4 * 3);
+static_assert((offsetof (frame<char[0]>, crc)) == 4 * 2);
+
+struct register_state {
+  uint32_t r[16];
+  uint32_t sr;
+  uint32_t gbr;
+  uint32_t mach;
+  uint32_t macl;
+  uint32_t pr;
+  uint32_t pc;
+};
+
+struct read_u32 {
+  uint32_t start;
+  uint32_t length;
+};
+
+namespace command {
+  constexpr uint32_t _register_state = gen_cmd("REGS");
+  constexpr uint32_t _read_u32 = gen_cmd("RU32");
+}
+
+namespace reply {
+  constexpr uint32_t _register_state = gen_cmd("regs");
+  constexpr uint32_t _read_u32 = gen_cmd("ru32");
+
+  constexpr uint32_t _acknowledge = gen_cmd("ackn");
+}
+
+}

example/example.mk

@@ -643,3 +643,10 @@ SHEIK_VQ_OBJ = \
 
 example/sheik_vq.elf: LDSCRIPT = $(LIB)/main.lds
 example/sheik_vq.elf: $(START_OBJ) $(SHEIK_VQ_OBJ)
+
+VGA_TIMING_OBJ = \
+	example/vga_timing.o \
+	holly/video_output.o
+
+example/vga_timing.elf: LDSCRIPT = $(LIB)/main.lds
+example/vga_timing.elf: $(START_OBJ) $(VGA_TIMING_OBJ)

example/interrupt.cpp

@@ -59,18 +59,28 @@ void dbr()
 
   uint32_t spc;
   uint32_t ssr;
+  uint32_t sgr;
+  uint32_t r15;
   asm volatile ("stc spc,%0" : "=r" (spc) );
   asm volatile ("stc ssr,%0" : "=r" (ssr) );
+  asm volatile ("stc sgr,%0" : "=r" (sgr) );
+  asm volatile ("mov r15,%0" : "=r" (r15) );
   serial::string("spc ");
   serial::integer(spc);
   serial::string("ssr ");
   serial::integer(ssr);
+  serial::string("sgr ");
+  serial::integer(sgr);
+  serial::string("r15 ");
+  serial::integer(r15);
 
   uint32_t sr;
   asm volatile ("stc sr,%0" : "=r" (sr) );
   serial::string("sr ");
   serial::integer(sr);
 
+  while (1);
+
   return;
 }
 
@@ -178,6 +188,10 @@ void main()
   serial::string("brcr ");
   serial::integer(sh7091.UBC.BRCR);
 
+  uint32_t r15;
+  asm volatile ("mov r15,%0" : "=r" (r15) );
+  serial::string("r15 ");
+  serial::integer(r15);
   int res = do_stuff(1, 2);
   (void)res;
 

example/vga_timing.cpp

@@ -0,0 +1,21 @@
+#include "holly/video_output.hpp"
+#include "holly/texture_memory_alloc.hpp"
+#include "holly/holly.hpp"
+#include "memorymap.hpp"
+
+void main()
+{
+  video_output::set_mode_vga();
+
+  uint32_t frame_address = texture_memory_alloc::framebuffer[0].start;
+  volatile uint16_t * framebuffer = reinterpret_cast<volatile uint16_t*>(&texture_memory32[frame_address/4]);
+
+  for (int i = 0; i < 640 * 480; i++) {
+    if (i % 2)
+      framebuffer[i] = 31 << 11;
+    else
+      framebuffer[i] = 0;
+  }
+
+  holly.FB_R_SOF1 = frame_address;
+}

ftdi.conf

@@ -0,0 +1,133 @@
+#see http://developer.intra2net.com/git/?p=libftdi;a=blob;f=src/ftdi.c
+#and http://developer.intra2net.com/git/?p=libftdi;a=blob;f=src/ftdi.h
+#and http://developer.intra2net.com/git/?p=libftdi;a=tree;f=ftdi_eeprom
+#and http://developer.intra2net.com/git/?p=libftdi;a=blob;f=ftdi_eeprom/example.conf
+#and http://developer.intra2net.com/git/?p=libftdi;a=blob;f=ftdi_eeprom/main.c
+
+############
+# Filename #
+############
+filename=eeprom.new 									# Filename of the EE file to be generated. Leave empty to skip file writing
+#flash_raw=false										# Boolean:
+
+## Include another config file?
+#include
+
+############
+#   IDs    #
+############
+# Future Technology Devices International, Ltd FT232H Single HS USB-UART/FIFO IC
+
+vendor_id="0x0403"
+product_id="0x6014"
+
+##############################
+# Device and Serial Strings  #
+##############################
+manufacturer="FTDI"      							# String: Manufacturer. FT245R factory default FTDI
+product="FT232H Single HS USB-UART/FIFO" 							# String: Product. FT245R factory default FT245R USB FIFO
+serial="00-00"
+use_serial=true
+
+############
+# Options  #
+############
+max_power=500   										# Integer: Max. power consumption: value * 2 mA(?). Use 0 if self_powered = true. FT245R factory default 90
+self_powered=false 										# Boolean: Turn this off for bus powered
+remote_wakeup=true 										# Boolean: Turn this on for remote wakeup feature
+
+# Normally you don't have to change one of these flags
+#in_is_isochronous=false								# Boolean: In Endpoint is Isochronous
+#out_is_isochronous=false								# Boolean: Out Endpoint is Isochronous
+#suspend_pull_downs=false								# Boolean: Enable suspend pull downs for lower power
+#change_usb_version=false								# Boolean: Change USB Version
+#usb_version=0x00										# Integer: Only used when change_usb_version is enabled
+
+#default_pid=0x6001										# Integer: Default Pid.
+
+eeprom_type=6											# Integer: Chip Type / EEPROM Type. Corresponds to ftdi_chip_type struct in ftdi.h
+#high_current=false										# Boolean: High Current Drive
+
+##Type_R chips
+# Only used on FT-R chips (when omitted, use chip defaults)
+# Possible values correspond to enum ftdi_cbus_func in ftdi.h and strings are defined in function parse_cbus in ftdi_eeprom/main.c
+# Values in the struct are (see current ftid.h for an up to date list):
+# CBUS_TXDEN = 0, CBUS_PWREN = 1, CBUS_RXLED = 2, CBUS_TXLED = 3, CBUS_TXRXLED = 4, CBUS_SLEEP = 5, CBUS_CLK48 = 6, CBUS_CLK24 = 7, CBUS_CLK12 = 8, CBUS_CLK6 =  9, CBUS_IOMODE = 0xa, CBUS_BB_WR = 0xb, CBUS_BB_RD = 0xc
+# Strings to be used here are:
+# "TXDEN", "PWREN", "RXLED", "TXLED", "TXRXLED", "SLEEP", "CLK48", "CLK24", "CLK12", "CLK6", "IOMODE", "BB_WR", "BB_RD"
+#cbus0=TXLED  											# String parsed to integer: FT245R factory default TXLED
+#cbus1=RXLED  											# String parsed to integer: FT245R factory default RXLED
+#cbus2=TXDEN  											# String parsed to integer: FT245R factory default TXDEN
+#cbus3=PWREN  											# String parsed to integer: FT245R factory default PWREN
+#cbus4=SLEEP  											# String parsed to integer: FT245R factory default SLEEP
+
+## Only used on FT232H chips (when omitted, use chip defaults)
+# Possible values correspond to enum ftdi_cbush_func in ftdi.h and strings are defined in function parse_cbush in ftdi_eeprom/main.c.
+# Values are (see current ftid.h for an up to date list):
+# CBUSH_TRISTATE = 0, CBUSH_TXLED = 1, CBUSH_RXLED = 2, CBUSH_TXRXLED = 3, CBUSH_PWREN = 4, CBUSH_SLEEP = 5, CBUSH_DRIVE_0 = 6, CBUSH_DRIVE1 = 7, CBUSH_IOMODE = 8, CBUSH_TXDEN =  9,     CBUSH_CLK30 = 10, CBUSH_CLK15 = 11, CBUSH_CLK7_5 = 12
+# Strings to be used in this config file are:
+# "TRISTATE", "TXLED", "RXLED", "TXRXLED", "PWREN", "SLEEP", "DRIVE_0", "DRIVE1", "IOMODE", "TXDEN", "CLK30", "CLK15", "CLK7_5"
+##Type_232H Chips
+#cbush0=TRISTATE										# String parsed to integer:
+#cbush1=TRISTATE									# String parsed to integer:
+#cbush2=TRISTATE										# String parsed to integer:
+#cbush3=TRISTATE										# String parsed to integer:
+#cbush4=TRISTATE										# String parsed to integer:
+#cbush5=TRISTATE										# String parsed to integer:
+#cbush6=TRISTATE										# String parsed to integer:
+#cbush7=TRISTATE										# String parsed to integer:
+cbush8=TXLED										# String parsed to integer:
+cbush9=RXLED										# String parsed to integer:
+# Group Drive
+# Strings to be used in this config file are:
+# "4MA", "8MA", "12MA", "16MA"
+#group0_drive											# Integer:
+
+# Only used on FT230X chips (when omitted, use chip defaults)
+# Possible values correspond to enum ftdi_cbusx_func in ftdi.h and strings are defined in function parse_cbusx in ftdi_eeprom/main.c.
+# Values are (see current ftid.h for an up to date list):
+# CBUSX_TRISTATE = 0, CBUSX_TXLED = 1, CBUSX_RXLED = 2, CBUSX_TXRXLED = 3, CBUSX_PWREN = 4, CBUSX_SLEEP = 5, CBUSX_DRIVE_0 = 6, CBUSX_DRIVE1 = 7, CBUSX_IOMODE = 8, CBUSX_TXDEN =  9,     CBUSX_CLK24 = 10, CBUSX_CLK12 = 11, CBUSX_CLK6 = 12, CBUSX_BAT_DETECT = 13, CBUSX_BAT_DETECT_NEG = 14, CBUSX_I2C_TXE = 15, CBUSX_I2C_RXF = 16, CBUSX_VBUS_SENSE = 17, CBUSX_BB_WR = 18, CBUSX_BB_RD = 19, CBUSX_TIME_STAMP = 20, CBUSX_AWAKE = 21
+# Strings to be used in this config file are:
+# "TRISTATE", "TXLED", "RXLED", "TXRXLED", "PWREN", "SLEEP", "DRIVE_0", "DRIVE1", "IOMODE", "TXDEN", "CLK24", "CLK12", "CLK6", "BAT_DETECT", "BAT_DETECT_NEG", "I2C_TXE", "I2C_RXF", "VBUS_SENSE", "BB_WR", "BB_RD", "TIME_STAMP", "AWAKE"
+#cbusx0=TXDEN											# String parsed to integer:
+#cbusx1=RXLED											# String parsed to integer:
+#cbusx2=TXLED											# String parsed to integer:
+#cbusx3=SLEEP											# String parsed to integer:
+
+########
+# Misc #
+########
+
+## Pin Configuration
+#invert_txd												# Boolean: Invert TXD signal
+#invert_rxd												# Boolean: Invert RXD signal
+#invert_rts												# Boolean: Invert RTS signal
+#invert_cts												# Boolean: Invert CTS signal
+#invert_dtr												# Boolean: Invert DTR signal
+#invert_dsr												# Boolean: Invert DSR signal
+#invert_dcd												# Boolean: Invert DCD signal
+#invert_ri												# Boolean: Invert RI signal
+
+## Channel Types and Drivers
+# Possible values are (see current ftid.h (Interface Mode macros) and ftdi.c "channel_mode" for an up to date list). They are parsed in fucntion parse_chtype in ftdi_eeprom/main.c.
+# (from ftid.h): UART= 0x0, FIFO = 0x1, OPTO = 0x2, CPU = 0x4, FT1284 = 0x8, RS485 = 0x10
+# (from ftdi.c): UART = 0x0, FIOF = 0x1, CPU = 0x2, OPTO = 0x3, FT1284 = 0x3
+# Strings to be used in this config file are:
+# "UART", "FIFO", "OPTO", "CPU", "FT1284"
+cha_type=UART
+# String parsed to integer:
+#chb_type
+# String parsed to integer:
+
+cha_vcp=false											# Boolean:
+#chb_vcp=false											# Boolean:
+#chc_vcp=false											# Boolean:
+#chd_vcp=false											# Boolean:
+#cha_rs485												# Boolean:
+#chb_rs485												# Boolean:
+#chc_rs485												# Boolean:
+#chd_rs485												# Boolean:
+
+## Include user defined binary data into the the eeprom at address?
+#user_data_addr											# Integer:
+#user_data_file											# String: Filename of the data file to be used