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pretend we have 128 MB sdram

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Polprzewodnikowy 2022-02-07 22:24:37 +01:00
parent 8da9359ee1
commit 89e84f10fb
28 changed files with 122 additions and 269 deletions
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12
fw/SummerCart64.qsf
View File

@ -47,10 +47,10 @@ set_global_assignment -name PROJECT_OUTPUT_DIRECTORY output_files
set_global_assignment -name NUM_PARALLEL_PROCESSORS ALL
set_global_assignment -name FLOW_ENABLE_POWER_ANALYZER ON
set_global_assignment -name POST_MODULE_SCRIPT_FILE "quartus_sh:scripts/post_module.tcl"
set_global_assignment -name QSYS_FILE rtl/intel/flash/intel_flash.qsys
set_global_assignment -name QSYS_FILE rtl/vendor/intel/generated/intel_flash.qsys
set_global_assignment -name QIP_FILE rtl/intel/fifo/intel_fifo_8.qip
set_global_assignment -name QIP_FILE rtl/intel/gpio/intel_gpio_ddro.qip
set_global_assignment -name QIP_FILE rtl/intel/pll/intel_pll.qip
set_global_assignment -name QIP_FILE rtl/vendor/intel/generated/intel_gpio_ddro.qip
set_global_assignment -name QIP_FILE rtl/vendor/intel/generated/intel_pll.qip
set_global_assignment -name SDC_FILE SummerCart64.sdc
set_global_assignment -name SYSTEMVERILOG_FILE picorv32/picorv32.v
set_global_assignment -name SYSTEMVERILOG_FILE rtl/cpu/cpu_bus.sv
@ -83,8 +83,8 @@ set_global_assignment -name SYSTEMVERILOG_FILE rtl/system/config.sv
set_global_assignment -name SYSTEMVERILOG_FILE rtl/system/sc64.sv
set_global_assignment -name SYSTEMVERILOG_FILE rtl/system/system.sv
set_global_assignment -name SYSTEMVERILOG_FILE rtl/usb/usb_ft1248.sv
set_global_assignment -name SYSTEMVERILOG_FILE rtl/vendor/vendor_flash.sv
set_global_assignment -name SYSTEMVERILOG_FILE rtl/vendor/vendor_reconfigure.sv
set_global_assignment -name SYSTEMVERILOG_FILE rtl/vendor/intel/vendor_flash.sv
set_global_assignment -name SYSTEMVERILOG_FILE rtl/vendor/intel/vendor_reconfigure.sv
# Pin & Location Assignments
# ==========================
@ -205,7 +205,7 @@ set_global_assignment -name ENABLE_CONFIGURATION_PINS OFF
set_global_assignment -name ENABLE_BOOT_SEL_PIN OFF
set_global_assignment -name INTERNAL_FLASH_UPDATE_MODE "SINGLE COMP IMAGE"
set_global_assignment -name CRC_ERROR_OPEN_DRAIN OFF
set_global_assignment -name STRATIX_DEVICE_IO_STANDARD "3.0-V LVTTL"
set_global_assignment -name STRATIX_DEVICE_IO_STANDARD "3.3-V LVTTL"
# Assembler Assignments
# =====================

55
fw/rtl/cpu/cpu_cfg.sv
View File

@ -5,21 +5,16 @@ module cpu_cfg (
);
logic skip_bootloader;
logic enable_writes_on_reset;
logic trigger_reconfiguration;
logic [15:0] isv_current_rd_ptr;
typedef enum bit [3:0] {
typedef enum bit [2:0] {
R_SCR,
R_DDIPL_OFFSET,
R_SAVE_OFFSET,
R_COMMAND,
R_DATA_0,
R_DATA_1,
R_VERSION,
R_RECONFIGURE,
R_ISV_OFFSET,
R_ISV_RD_PTR,
R_FLASH
R_RECONFIGURE
} e_reg_id;
const logic [31:0] RECONFIGURE_MAGIC = 32'h52535446;
@ -34,7 +29,7 @@ module cpu_cfg (
always_comb begin
bus.rdata = 32'd0;
if (bus.ack) begin
case (bus.address[5:2])
case (bus.address[4:2])
R_SCR: bus.rdata = {
cfg.cpu_ready,
cfg.cpu_busy,
@ -44,7 +39,7 @@ module cpu_cfg (
cfg.flash_erase_busy,
1'd0,
16'd0,
cfg.isv_enabled,
enable_writes_on_reset,
skip_bootloader,
cfg.flashram_enabled,
cfg.sram_banked,
@ -53,15 +48,11 @@ module cpu_cfg (
cfg.sdram_writable,
cfg.sdram_switch
};
R_DDIPL_OFFSET: bus.rdata = {6'd0, cfg.ddipl_offset};
R_SAVE_OFFSET: bus.rdata = {6'd0, cfg.save_offset};
R_COMMAND: bus.rdata = {24'd0, cfg.cmd};
R_DATA_0: bus.rdata = cfg.data[0];
R_DATA_1: bus.rdata = cfg.data[1];
R_VERSION: bus.rdata = sc64::SC64_VER;
R_RECONFIGURE: bus.rdata = RECONFIGURE_MAGIC;
R_ISV_OFFSET: bus.rdata = {6'd0, cfg.isv_offset};
R_ISV_RD_PTR: bus.rdata = {isv_current_rd_ptr, cfg.isv_rd_ptr};
default: bus.rdata = 32'd0;
endcase
end
@ -91,17 +82,13 @@ module cpu_cfg (
cfg.sram_enabled <= 1'b0;
cfg.sram_banked <= 1'b0;
cfg.flashram_enabled <= 1'b0;
cfg.isv_enabled <= 1'b0;
cfg.ddipl_offset <= 26'h3BE_0000;
cfg.save_offset <= 26'h3FE_0000;
cfg.isv_offset <= 26'h3FF_0000;
skip_bootloader <= 1'b0;
enable_writes_on_reset <= 1'b0;
trigger_reconfiguration <= 1'b0;
end else begin
if (sys.n64_soft_reset) begin
cfg.sdram_switch <= skip_bootloader;
cfg.sdram_writable <= 1'b0;
isv_current_rd_ptr <= 16'd0;
cfg.sdram_writable <= enable_writes_on_reset;
end
if (cfg.cmd_request) begin
@ -109,7 +96,7 @@ module cpu_cfg (
end
if (bus.request) begin
case (bus.address[5:2])
case (bus.address[4:2])
R_SCR: begin
if (bus.wmask[3]) begin
{
@ -123,7 +110,7 @@ module cpu_cfg (
end
if (bus.wmask[0]) begin
{
cfg.isv_enabled,
enable_writes_on_reset,
skip_bootloader,
cfg.flashram_enabled,
cfg.sram_banked,
@ -135,35 +122,11 @@ module cpu_cfg (
end
end
R_DDIPL_OFFSET: begin
if (&bus.wmask) begin
cfg.ddipl_offset <= bus.wdata[25:0];
end
end
R_SAVE_OFFSET: begin
if (&bus.wmask) begin
cfg.save_offset <= bus.wdata[25:0];
end
end
R_RECONFIGURE: begin
if (&bus.wmask && bus.wdata == RECONFIGURE_MAGIC) begin
trigger_reconfiguration <= 1'b1;
end
end
R_ISV_OFFSET: begin
if (&bus.wmask) begin
cfg.isv_offset <= bus.wdata[25:0];
end
end
R_ISV_RD_PTR: begin
if (&bus.wmask[3:2]) begin
isv_current_rd_ptr <= bus.wdata[31:16];
end
end
endcase
end
end

12
fw/rtl/cpu/cpu_ram.sv
View File

@ -3,7 +3,7 @@ module cpu_ram (
if_cpu_bus bus
);
logic [3:0][7:0] ram [0:8191];
logic [3:0][7:0] ram [0:4095];
logic [31:0] q;
always_ff @(posedge sys.clk) begin
@ -21,12 +21,12 @@ module cpu_ram (
end
always_ff @(posedge sys.clk) begin
q <= ram[bus.address[14:2]];
q <= ram[bus.address[13:2]];
if (bus.request) begin
if (bus.wmask[0]) ram[bus.address[14:2]][0] <= bus.wdata[7:0];
if (bus.wmask[1]) ram[bus.address[14:2]][1] <= bus.wdata[15:8];
if (bus.wmask[2]) ram[bus.address[14:2]][2] <= bus.wdata[23:16];
if (bus.wmask[3]) ram[bus.address[14:2]][3] <= bus.wdata[31:24];
if (bus.wmask[0]) ram[bus.address[13:2]][0] <= bus.wdata[7:0];
if (bus.wmask[1]) ram[bus.address[13:2]][1] <= bus.wdata[15:8];
if (bus.wmask[2]) ram[bus.address[13:2]][2] <= bus.wdata[23:16];
if (bus.wmask[3]) ram[bus.address[13:2]][3] <= bus.wdata[31:24];
end
end

5
fw/rtl/n64/n64_bus.sv
View File

@ -9,7 +9,6 @@ interface if_n64_bus ();
logic [31:0] address;
logic [15:0] wdata;
logic [15:0] rdata;
logic n64_active;
logic [31:0] real_address;
logic read_op;
logic write_op;
@ -39,7 +38,6 @@ interface if_n64_bus ();
output address,
output wdata,
input rdata,
output n64_active,
output real_address,
output read_op,
output write_op
@ -49,11 +47,9 @@ interface if_n64_bus ();
generate
for (n = 0; n < NUM_DEVICES; n++) begin : at
logic device_request;
logic device_n64_active;
always_comb begin
device_request = request && id == sc64::e_n64_id'(n);
device_n64_active = n64_active && id == sc64::e_n64_id'(n);
end
modport device (
@ -63,7 +59,6 @@ interface if_n64_bus ();
input .address(address),
input .wdata(wdata),
output .rdata(device_rdata[n]),
input .n64_active(device_n64_active),
input .real_address(real_address),
input .read_op(read_op),
input .write_op(write_op)

29
fw/rtl/n64/n64_cfg.sv
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@ -15,12 +15,6 @@ module n64_cfg (
R_VERSION_L
} e_reg_id;
typedef enum bit [3:0] {
R_ISV_ID_H = 4'h0,
R_ISV_ID_L = 4'h1,
R_ISV_RD_PTR = 4'hB
} e_reg_isv_id;
typedef enum bit [0:0] {
S_IDLE,
S_WAIT
@ -28,12 +22,9 @@ module n64_cfg (
e_state state;
logic [31:0] isv_id;
always_comb begin
bus.rdata = 16'd0;
if (bus.ack) begin
if (bus.address[15:14] == 2'b00) begin
case (bus.address[3:1])
R_SR: bus.rdata = {
cfg.cpu_ready,
@ -51,14 +42,6 @@ module n64_cfg (
R_VERSION_L: bus.rdata = sc64::SC64_VER[15:0];
default: bus.rdata = 16'd0;
endcase
end else if (bus.address[15:14] == 2'b11) begin
case (bus.address[4:1])
R_ISV_ID_H: bus.rdata = isv_id[31:16];
R_ISV_ID_L: bus.rdata = isv_id[15:0];
R_ISV_RD_PTR: bus.rdata = cfg.isv_rd_ptr;
default: bus.rdata = 16'd0;
endcase
end
end
end
@ -69,10 +52,6 @@ module n64_cfg (
if (cfg.data_write[0]) cfg.data[0] <= cfg.wdata;
if (cfg.data_write[1]) cfg.data[1] <= cfg.wdata;
if (sys.n64_soft_reset) begin
cfg.isv_rd_ptr <= 16'd0;
end
if (sys.reset) begin
state <= S_IDLE;
end else begin
@ -82,7 +61,6 @@ module n64_cfg (
state <= S_WAIT;
bus.ack <= 1'b1;
if (bus.write) begin
if (bus.address[15:14] == 2'b00) begin
case (bus.address[3:1])
R_COMMAND: begin
cfg.cmd <= bus.wdata[7:0];
@ -93,13 +71,6 @@ module n64_cfg (
R_DATA_1_H: cfg.data[1][31:16] <= bus.wdata;
R_DATA_1_L: cfg.data[1][15:0] <= bus.wdata;
endcase
end else if (bus.address[15:14] == 2'b11) begin
case (bus.address[4:1])
R_ISV_ID_H: isv_id[31:16] <= bus.wdata;
R_ISV_ID_L: isv_id[15:0] <= bus.wdata;
R_ISV_RD_PTR: cfg.isv_rd_ptr <= bus.wdata;
endcase
end
end
end
end

63
fw/rtl/n64/n64_pi.sv
View File

@ -191,7 +191,6 @@ module n64_pi (
end
always_comb begin
bus.n64_active = !pi_reset && pi_mode != PI_MODE_IDLE;
bus.read_op = read_op;
bus.write_op = write_op;
end
@ -211,31 +210,30 @@ module n64_pi (
// Address decoding
logic load_next;
const bit [31:0] DDIPL_OFFSET = 32'h0780_0000;
const bit [31:0] BUFFERS_OFFSET = 32'h07C0_0000;
const bit [31:0] SAVE_OFFSET = 32'h07EE_0000;
sc64::e_n64_id next_id;
logic [31:0] next_offset;
logic sram_selected;
logic isv_selected;
always_ff @(posedge sys.clk) begin
load_next <= 1'b0;
if (aleh_op) begin
n64_pi_address_valid <= 1'b0;
next_id <= sc64::__ID_N64_END;
next_offset <= 32'd0;
sram_selected <= 1'b0;
isv_selected <= 1'b0;
if (cfg.dd_enabled) begin
if (n64_pi_ad_input == 16'h0500) begin
n64_pi_address_valid <= 1'b1;
next_id <= sc64::ID_N64_DD;
next_offset <= cfg.ddipl_offset - 32'h0500_0000;
next_offset <= (-32'h0500_0000);
end
if (n64_pi_ad_input >= 16'h0600 && n64_pi_ad_input < 16'h0640) begin
n64_pi_address_valid <= 1'b1;
next_id <= sc64::ID_N64_SDRAM;
next_offset <= cfg.ddipl_offset - 32'h0600_0000;
next_offset <= (-32'h0600_0000) + DDIPL_OFFSET;
end
end
if (cfg.flashram_enabled) begin
@ -243,7 +241,7 @@ module n64_pi (
n64_pi_address_valid <= 1'b1;
next_id <= sc64::ID_N64_FLASHRAM;
if (cfg.flashram_read_mode) begin
next_offset <= cfg.save_offset - 32'h0800_0000;
next_offset <= (-32'h0800_0000) + SAVE_OFFSET;
end
end
end else if (cfg.sram_enabled) begin
@ -252,7 +250,7 @@ module n64_pi (
if (n64_pi_ad_input[3:2] != 2'b11 && n64_pi_ad_input[1:0] == 2'b00) begin
n64_pi_address_valid <= 1'b1;
next_id <= sc64::ID_N64_SDRAM;
next_offset <= cfg.save_offset - {n64_pi_ad_input[3:2], 18'd0} + {n64_pi_ad_input[3:2], 15'd0} - 32'h0800_0000;
next_offset <= (-32'h0800_0000) - {n64_pi_ad_input[3:2], 18'd0} + {n64_pi_ad_input[3:2], 15'd0} + SAVE_OFFSET;
sram_selected <= 1'b1;
end
end
@ -260,47 +258,26 @@ module n64_pi (
if (n64_pi_ad_input == 16'h0800) begin
n64_pi_address_valid <= 1'b1;
next_id <= sc64::ID_N64_SDRAM;
next_offset <= cfg.save_offset - 32'h0800_0000;
next_offset <= (-32'h0800_0000) + SAVE_OFFSET;
sram_selected <= 1'b1;
end
end
end
if (n64_pi_ad_input >= 16'h1000 && n64_pi_ad_input < 16'h1400) begin
if (n64_pi_ad_input >= 16'h1000 && n64_pi_ad_input < 16'h1800) begin
n64_pi_address_valid <= 1'b1;
next_id <= cfg.sdram_switch ? sc64::ID_N64_SDRAM : sc64::ID_N64_BOOTLOADER;
next_offset <= (-32'h1000_0000);
if (cfg.isv_enabled) begin
if (n64_pi_ad_input == 16'h13FF) begin
end
if (n64_pi_ad_input >= 16'h1F80 && n64_pi_ad_input < 16'h1FC0) begin
n64_pi_address_valid <= 1'b1;
next_id <= sc64::ID_N64_SDRAM;
next_offset <= cfg.isv_offset - 32'h13FF_0000;
isv_selected <= 1'b1;
end
end
next_offset <= (-32'h1F80_0000) + BUFFERS_OFFSET;
end
if (n64_pi_ad_input == 16'h1FFF) begin
n64_pi_address_valid <= 1'b1;
next_id <= sc64::ID_N64_CFG;
end
end
if (alel_op) begin
if (next_id == sc64::ID_N64_DD) begin
if (|n64_pi_ad_input[15:11]) begin
n64_pi_address_valid <= 1'b0;
end
end
if (sram_selected) begin
if (n64_pi_ad_input[15]) begin
n64_pi_address_valid <= 1'b0;
end
end
if (isv_selected) begin
if (n64_pi_ad_input < 16'h0020) begin
next_offset <= (-32'h13FF_0000) + 32'h0000_C000;
next_id <= sc64::ID_N64_CFG;
end
end
load_next <= 1'b1;
end
end
@ -322,13 +299,13 @@ module n64_pi (
read_fifo_flush <= 1'b1;
write_fifo_flush <= 1'b1;
end else begin
write_fifo_flush <= starting_id == sc64::ID_N64_SDRAM && !cfg.sdram_writable && !sram_selected && !isv_selected;
write_fifo_flush <= starting_id == sc64::ID_N64_SDRAM && !cfg.sdram_writable && !sram_selected;
if (aleh_op) begin
starting_address[31:16] <= n64_pi_ad_input;
end
if (load_next) begin
if (alel_op) begin
read_fifo_flush <= 1'b1;
can_read <= 1'b1;
first_write_op <= 1'b1;
@ -352,9 +329,6 @@ module n64_pi (
if (load_starting_address) begin
bus.id <= starting_id;
bus.address <= starting_address + next_offset;
if (starting_id == sc64::ID_N64_FLASHRAM) begin
bus.address <= starting_address;
end
load_starting_address <= 1'b0;
end
bus.wdata <= write_fifo_rdata;
@ -363,11 +337,8 @@ module n64_pi (
bus.request <= 1'b1;
bus.write <= 1'b0;
if (load_starting_address) begin
bus.id <= starting_id;
bus.id <= (starting_id == sc64::ID_N64_FLASHRAM && cfg.flashram_read_mode) ? sc64::ID_N64_SDRAM : starting_id;
bus.address <= starting_address + next_offset;
if (starting_id == sc64::ID_N64_FLASHRAM && cfg.flashram_read_mode) begin
bus.id <= sc64::ID_N64_SDRAM;
end
load_starting_address <= 1'b0;
end
end

19
fw/rtl/system/config.sv
View File

@ -15,11 +15,6 @@ interface if_config ();
logic sram_banked;
logic flashram_enabled;
logic flashram_read_mode;
logic isv_enabled;
logic [25:0] ddipl_offset;
logic [25:0] save_offset;
logic [25:0] isv_offset;
logic [15:0] isv_rd_ptr;
logic flash_erase_start;
logic flash_erase_busy;
logic flash_wp_enable;
@ -32,11 +27,7 @@ interface if_config ();
input sram_enabled,
input sram_banked,
input flashram_enabled,
input flashram_read_mode,
input isv_enabled,
input ddipl_offset,
input save_offset,
input isv_offset
input flashram_read_mode
);
modport flashram (
@ -58,8 +49,7 @@ interface if_config ();
output cmd,
output data,
input data_write,
input wdata,
output isv_rd_ptr
input wdata
);
modport cpu (
@ -77,11 +67,6 @@ interface if_config ();
output sram_enabled,
output sram_banked,
output flashram_enabled,
output isv_enabled,
output ddipl_offset,
output save_offset,
output isv_offset,
input isv_rd_ptr,
output flash_erase_start,
input flash_erase_busy,
output flash_wp_enable,

20
fw/rtl/usb/usb_ft1248.sv
View File

@ -133,8 +133,8 @@ module usb_ft1248 (
end else begin
if (reset_ack) begin
reset_pending <= 1'b0;
write_modem_status_pending <= 1'b1;
reset_reply <= 1'b1;
write_modem_status_pending <= 1'b1;
end
if (write_buffer_flush) begin
@ -152,8 +152,8 @@ module usb_ft1248 (
reset_pending <= 1'b1;
end
if (last_reset_status && !ft_miosi_in[0]) begin
write_modem_status_pending <= 1'b1;
reset_reply <= 1'b0;
write_modem_status_pending <= 1'b1;
end
end
if (cmd == CMD_WRITE_MODEM_STATUS) begin
@ -193,10 +193,10 @@ module usb_ft1248 (
end
if (state == STATE_DATA) begin
ft_cs = 1'b0;
if (phase[0] || phase[1]) begin
ft_clk = 1'b1;
end
ft_cs = 1'b0;
if (cmd == CMD_WRITE) begin
ft_miosi_out = tx_rdata;
ft_oe = 1'b1;
@ -215,12 +215,12 @@ module usb_ft1248 (
rx_wdata = ft_miosi_in;
if (!ft_miso && (state == STATE_DATA) && phase[3]) begin
if (cmd == CMD_WRITE) begin
tx_read = 1'b1;
end
if (cmd == CMD_READ) begin
rx_write = 1'b1;
end
if (cmd == CMD_WRITE) begin
tx_read = 1'b1;
end
end
end
@ -277,14 +277,14 @@ module usb_ft1248 (
if (phase[3]) begin
if (ft_miso) begin
next_state = STATE_DESELECT;
end else if (cmd == CMD_WRITE) begin
if (tx_almost_empty) begin
next_state = STATE_DESELECT;
end
end else if (cmd == CMD_READ) begin
if (rx_almost_full) begin
next_state = STATE_DESELECT;
end
end else if (cmd == CMD_WRITE) begin
if (tx_almost_empty) begin
next_state = STATE_DESELECT;
end
end else begin
next_state = STATE_DESELECT;
end

0
fw/rtl/intel/flash/intel_flash.qsys → fw/rtl/vendor/intel/generated/intel_flash.qsys vendored
View File

0
fw/rtl/intel/gpio/intel_gpio_ddro.qip → fw/rtl/vendor/intel/generated/intel_gpio_ddro.qip vendored
View File

0
fw/rtl/intel/gpio/intel_gpio_ddro.v → fw/rtl/vendor/intel/generated/intel_gpio_ddro.v vendored
View File

0
fw/rtl/intel/gpio/intel_gpio_ddro/altera_gpio_lite.sv → fw/rtl/vendor/intel/generated/intel_gpio_ddro/altera_gpio_lite.sv vendored
View File

0
fw/rtl/intel/pll/intel_pll.ppf → fw/rtl/vendor/intel/generated/intel_pll.ppf vendored
View File

0
fw/rtl/intel/pll/intel_pll.qip → fw/rtl/vendor/intel/generated/intel_pll.qip vendored
View File

0
fw/rtl/intel/pll/intel_pll.v → fw/rtl/vendor/intel/generated/intel_pll.v vendored
View File

0
fw/rtl/vendor/vendor_flash.sv → fw/rtl/vendor/intel/vendor_flash.sv vendored
View File

0
fw/rtl/vendor/vendor_reconfigure.sv → fw/rtl/vendor/intel/vendor_reconfigure.sv vendored
View File

4
sw/pc/sc64.py
View File

@ -835,8 +835,8 @@ if __name__ == "__main__":
if (disk_file):
print(f"Using 64DD disk image file [{disk_file}]")
sc64.set_dd_configuration_for_disk(disk_file)
print(f"Setting 64DD disk state to [Changed]")
sc64.set_dd_disk_state("changed" if disk_file else "ejected")
print(f"Setting 64DD disk state to [Inserted]")
sc64.set_dd_disk_state("inserted" if disk_file else "ejected")
sc64.debug_loop(is_viewer_enabled)
except SC64Exception as e:

2
sw/riscv/SC64.ld
View File

@ -1,6 +1,6 @@
MEMORY {
rom (rx) : org = 0x00010000, len = 26k
ram (rwx) : org = 0x10000000, len = 32k
ram (rwx) : org = 0x10000000, len = 16k
}
ENTRY(reset_handler)

35
sw/riscv/src/cfg.c
View File

@ -8,20 +8,6 @@
#include "usb.h"
#define SAVE_SIZE_EEPROM_4K (512)
#define SAVE_SIZE_EEPROM_16K (2048)
#define SAVE_SIZE_SRAM (32 * 1024)
#define SAVE_SIZE_FLASHRAM (128 * 1024)
#define SAVE_SIZE_SRAM_BANKED (3 * 32 * 1024)
#define ISV_SIZE (64 * 1024)
#define SAVE_OFFSET_PKST2 (0x01608000UL)
#define DEFAULT_SAVE_OFFSET (0x03FD0000UL)
#define DEFAULT_DDIPL_OFFSET (0x03BD0000UL)
enum cfg_id {
CFG_ID_SCR,
CFG_ID_SDRAM_SWITCH,
@ -86,8 +72,6 @@ static void set_usb_drive_not_busy (void) {
}
static void set_save_type (enum save_type save_type) {
uint32_t save_offset = DEFAULT_SAVE_OFFSET;
change_scr_bits(CFG_SCR_FLASHRAM_EN | CFG_SCR_SRAM_BANKED | CFG_SCR_SRAM_EN, false);
joybus_set_eeprom(EEPROM_NONE);
@ -95,37 +79,26 @@ static void set_save_type (enum save_type save_type) {
case SAVE_TYPE_NONE:
break;
case SAVE_TYPE_EEPROM_4K:
save_offset = SDRAM_SIZE - SAVE_SIZE_EEPROM_4K - ISV_SIZE;
joybus_set_eeprom(EEPROM_4K);
break;
case SAVE_TYPE_EEPROM_16K:
save_offset = SDRAM_SIZE - SAVE_SIZE_EEPROM_16K - ISV_SIZE;
joybus_set_eeprom(EEPROM_16K);
break;
case SAVE_TYPE_SRAM:
save_offset = SDRAM_SIZE - SAVE_SIZE_SRAM - ISV_SIZE;
change_scr_bits(CFG_SCR_SRAM_EN, true);
break;
case SAVE_TYPE_FLASHRAM:
save_offset = SDRAM_SIZE - SAVE_SIZE_FLASHRAM - ISV_SIZE;
change_scr_bits(CFG_SCR_FLASHRAM_EN, true);
break;
case SAVE_TYPE_SRAM_BANKED:
save_offset = SDRAM_SIZE - SAVE_SIZE_SRAM_BANKED - ISV_SIZE;
change_scr_bits(CFG_SCR_SRAM_BANKED | CFG_SCR_SRAM_EN, true);
break;
case SAVE_TYPE_FLASHRAM_PKST2:
save_offset = SAVE_OFFSET_PKST2;
change_scr_bits(CFG_SCR_FLASHRAM_EN, true);
break;
default:
save_type = SAVE_TYPE_NONE;
break;
}
p.save_type = save_type;
CFG->SAVE_OFFSET = save_offset;
}
@ -157,10 +130,10 @@ void cfg_query (uint32_t *args) {
args[1] = (uint32_t) (p.tv_type);
break;
case CFG_ID_SAVE_OFFEST:
args[1] = CFG->SAVE_OFFSET;
args[1] = SAVE_OFFSET;
break;
case CFG_ID_DDIPL_OFFEST:
args[1] = CFG->DDIPL_OFFSET;
args[1] = DDIPL_OFFSET;
break;
case CFG_ID_BOOT_MODE:
args[1] = p.boot_mode;
@ -210,10 +183,8 @@ void cfg_update (uint32_t *args) {
p.tv_type = (uint8_t) (args[1] & 0x03);
break;
case CFG_ID_SAVE_OFFEST:
CFG->SAVE_OFFSET = args[1];
break;
case CFG_ID_DDIPL_OFFEST:
CFG->DDIPL_OFFSET = args[1];
break;
case CFG_ID_BOOT_MODE:
p.boot_mode = args[1];
@ -240,7 +211,6 @@ void cfg_update (uint32_t *args) {
dd_set_drive_id((uint16_t) (args[1]));
break;
case CFG_ID_DD_THB_TABLE_OFFSET:
dd_set_thb_table_offset(args[1]);
break;
case CFG_ID_IS_VIEWER_ENABLE:
isv_set_enabled(args[1]);
@ -270,7 +240,6 @@ void cfg_set_time (uint32_t *args) {
void cfg_init (void) {
set_save_type(SAVE_TYPE_NONE);
CFG->DDIPL_OFFSET = DEFAULT_DDIPL_OFFSET;
CFG->SCR = CFG_SCR_CPU_READY;
p.cic_seed = 0xFFFF;

11
sw/riscv/src/dd.c
View File

@ -5,9 +5,10 @@
#define DD_USER_SECTORS_PER_BLOCK (85)
#define DD_BUFFERS_OFFSET (SDRAM_BASE + 0x03BC0000UL)
#define DD_THB_TABLE_OFFSET (DD_BUFFERS_OFFSET + 0x0000)
#define DD_BLOCK_BUFFER_OFFSET (DD_BUFFERS_OFFSET + 0x5000)
#define DD_BUFFERS_OFFSET (SDRAM_BASE + 0x07E5A7F8UL)
#define DD_STORAGE_TABLE_OFFSET (DD_BUFFERS_OFFSET + 0x00000000UL)
#define DD_THB_TABLE_OFFSET (DD_BUFFERS_OFFSET + 0x0007BD90UL)
#define DD_BLOCK_BUFFER_OFFSET (DD_BUFFERS_OFFSET + 0x00080700UL)
#define USB_DEBUG_ID_DD_BLOCK (0xF5)
@ -187,10 +188,6 @@ uint16_t dd_get_drive_id (void) {
return DD->DRIVE_ID;
}
void dd_set_thb_table_offset (uint32_t offset) {
p.thb_table = (io32_t *) (SDRAM_BASE + offset);
}
uint32_t dd_get_thb_table_offset (void) {
return (((uint32_t) (p.thb_table)) & 0x0FFFFFFF);
}

1
sw/riscv/src/dd.h
View File

@ -16,7 +16,6 @@ void dd_set_disk_state (disk_state_t disk_state);
disk_state_t dd_get_disk_state (void);
void dd_set_drive_id (uint16_t id);
uint16_t dd_get_drive_id (void);
void dd_set_thb_table_offset (uint32_t offset);
uint32_t dd_get_thb_table_offset (void);
void dd_init (void);
void process_dd (void);

4
sw/riscv/src/flashram.c
View File

@ -1,4 +1,4 @@
#include "flashram.h"
#include "sys.h"
#define FLASHRAM_SIZE (128 * 1024)
@ -65,7 +65,7 @@ void process_flashram (void) {
p.op = get_operation_type();
if (p.op != OP_NONE) {
uint32_t sdram_address = SDRAM_BASE + CFG->SAVE_OFFSET;
uint32_t sdram_address = SDRAM_BASE + SAVE_OFFSET;
p.save_in_progress = true;
if (p.op != OP_ERASE_ALL) {

3
sw/riscv/src/flashram.h
View File

@ -2,9 +2,6 @@
#define FLASHRAM_H__
#include "sys.h"
void flashram_init (void);
void process_flashram (void);

43
sw/riscv/src/isv.c
View File

@ -2,13 +2,21 @@
#include "usb.h"
#define ISV_REGS_SIZE (0x20)
#define ISV_BUFFER_SIZE ((64 * 1024) - ISV_REGS_SIZE)
#define ISV_DEFAULT_OFFSET (0x03FF0000UL)
typedef struct {
io32_t __padding_1[5];
io32_t RD_PTR;
io32_t __padding_2[2];
io8_t BUFFER[(64 * 1024) - 0x20];
} isv_t;
#define ISV_BASE (SDRAM_BASE + 0x03FF0000UL)
#define ISV ((isv_t *) ISV_BASE)
struct process {
bool enabled;
bool ready;
uint16_t current_read_pointer;
};
static struct process p;
@ -20,35 +28,36 @@ static void isv_set_ready (void) {
void isv_set_enabled (bool enabled) {
if (enabled) {
CFG->SCR |= CFG_SCR_ISV_EN;
CFG->ISV_CURRENT_RD_PTR = CFG->ISV_RD_PTR;
CFG->SCR |= CFG_SCR_WRITES_ON_RESET_EN;
ISV->RD_PTR = SWAP32(0);
p.enabled = true;
p.ready = true;
p.current_read_pointer = 0;
} else {
CFG->SCR &= ~(CFG_SCR_ISV_EN);
CFG->SCR &= ~(CFG_SCR_WRITES_ON_RESET_EN);
p.enabled = false;
}
}
bool isv_get_enabled (void) {
return (CFG->SCR & CFG_SCR_ISV_EN);
return p.enabled;
}
void isv_init (void) {
CFG->ISV_OFFSET = ISV_DEFAULT_OFFSET;
p.ready = true;
p.enabled = false;
}
void process_isv (void) {
if (p.ready && (CFG->SCR & CFG_SCR_ISV_EN)) {
uint16_t read_pointer = CFG->ISV_RD_PTR;
uint16_t current_read_pointer = CFG->ISV_CURRENT_RD_PTR;
if (p.enabled && p.ready) {
uint16_t read_pointer = (uint16_t) (SWAP32(ISV->RD_PTR));
if (read_pointer != current_read_pointer) {
bool wrap = read_pointer < current_read_pointer;
if (read_pointer != p.current_read_pointer) {
bool wrap = read_pointer < p.current_read_pointer;
uint32_t length = ((wrap ? ISV_BUFFER_SIZE : read_pointer) - current_read_pointer);
uint32_t offset = CFG->ISV_OFFSET + ISV_REGS_SIZE + current_read_pointer;
uint32_t length = ((wrap ? sizeof(ISV->BUFFER) : read_pointer) - p.current_read_pointer);
uint32_t offset = (((uint32_t) (&ISV->BUFFER[p.current_read_pointer])) & 0x0FFFFFFF);
usb_event_t event;
event.id = EVENT_ID_IS_VIEWER;
@ -57,7 +66,7 @@ void process_isv (void) {
uint32_t data[2] = { length, offset };
if (usb_put_event(&event, data, sizeof(data))) {
CFG->ISV_CURRENT_RD_PTR = wrap ? 0 : read_pointer;
p.current_read_pointer = wrap ? 0 : read_pointer;
p.ready = false;
}
}

3
sw/riscv/src/joybus.c
View File

@ -1,5 +1,6 @@
#include "joybus.h"
#include "rtc.h"
#include "sys.h"
#define CMD_EEPROM_STATUS (0x00)
@ -83,7 +84,7 @@ void process_joybus (void) {
}
if (p.eeprom_type != EEPROM_NONE) {
save_data = (io32_t *) (SDRAM_BASE + CFG->SAVE_OFFSET + (rx_data[1] * EEPROM_PAGE_SIZE));
save_data = (io32_t *) (SDRAM_BASE + SAVE_OFFSET + (rx_data[1] * EEPROM_PAGE_SIZE));
switch (rx_data[0]) {
case CMD_EEPROM_STATUS:
tx_data[1] = p.eeprom_type == EEPROM_16K ? EEPROM_ID_16K : EEPROM_ID_4K;

3
sw/riscv/src/joybus.h
View File

@ -2,9 +2,6 @@
#define JOYBUS_H__
#include "sys.h"
enum eeprom_type {
EEPROM_NONE,
EEPROM_4K,

11
sw/riscv/src/sys.h
View File

@ -21,6 +21,10 @@ typedef volatile uint16_t io16_t;
typedef volatile uint32_t io32_t;
#define DDIPL_OFFSET (0x07800000UL)
#define SAVE_OFFSET (0x07EE0000UL)
#define FLASH_BASE (0x00000000UL)
#define FLASH_SIZE (0x39800)
#define FLASH (*((io32_t *) FLASH_BASE))
@ -33,16 +37,11 @@ typedef volatile uint32_t io32_t;
typedef volatile struct cfg_regs {
io32_t SCR;
io32_t DDIPL_OFFSET;
io32_t SAVE_OFFSET;
io8_t CMD;
io8_t __padding[3];
io32_t DATA[2];
io32_t VERSION;
io32_t RECONFIGURE;
io32_t ISV_OFFSET;
io16_t ISV_RD_PTR;
io16_t ISV_CURRENT_RD_PTR;
} cfg_regs_t;
#define CFG_BASE (0x20000000UL)
@ -55,7 +54,7 @@ typedef volatile struct cfg_regs {
#define CFG_SCR_SRAM_BANKED (1 << 4)
#define CFG_SCR_FLASHRAM_EN (1 << 5)
#define CFG_SCR_SKIP_BOOTLOADER (1 << 6)
#define CFG_SCR_ISV_EN (1 << 7)
#define CFG_SCR_WRITES_ON_RESET_EN (1 << 7)
#define CFG_SCR_FLASH_ERASE_START (1 << 24)
#define CFG_SCR_FLASH_ERASE_BUSY (1 << 25)
#define CFG_SCR_FLASH_WP_ENABLE (1 << 26)