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sram 768 working

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Polprzewodnikowy 2021-08-28 02:37:02 +02:00
parent b297bd3f25
commit 80861989b1
6 changed files with 91 additions and 57 deletions
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86
fw/cpu/controller/process.c
View File

@ -182,49 +182,6 @@ void process_uart (void) {
}
}
void cfg_set_save_type (uint8_t type) {
CFG->SCR &= ~(CFG_SCR_FLASHRAM_EN | CFG_SCR_SRAM_EN);
switch (type) {
case 0: {
break;
}
case 1: {
CFG->SAVE_OFFSET = SDRAM_SIZE - 512;
break;
}
case 2: {
CFG->SAVE_OFFSET = SDRAM_SIZE - 2048;
break;
}
case 3: {
CFG->SAVE_OFFSET = SDRAM_SIZE - (32 * 1024);
CFG->SCR |= CFG_SCR_SRAM_EN;
break;
}
case 4: {
CFG->SAVE_OFFSET = SDRAM_SIZE - (256 * 1024);
CFG->SCR |= CFG_SCR_FLASHRAM_EN;
break;
}
case 5: {
CFG->SAVE_OFFSET = SDRAM_SIZE - (3 * 32 * 1024);
CFG->SCR |= CFG_SCR_SRAM_EN;
break;
}
case 6: {
CFG->SAVE_OFFSET = 0x01618000;
CFG->SCR |= CFG_SCR_FLASHRAM_EN;
break;
}
default: {
return;
}
}
save_type = type;
}
void cfg_update_config (uint32_t *args) {
switch (args[0]) {
case 0: {
@ -265,3 +222,46 @@ void cfg_update_config (uint32_t *args) {
}
}
}
void cfg_set_save_type (uint8_t type) {
CFG->SCR &= ~(CFG_SCR_FLASHRAM_EN | CFG_SCR_SRAM_BANKED | CFG_SCR_SRAM_EN);
switch (type) {
case 0: {
break;
}
case 1: {
CFG->SAVE_OFFSET = SDRAM_SIZE - 512;
break;
}
case 2: {
CFG->SAVE_OFFSET = SDRAM_SIZE - 2048;
break;
}
case 3: {
CFG->SAVE_OFFSET = SDRAM_SIZE - (32 * 1024);
CFG->SCR |= CFG_SCR_SRAM_EN;
break;
}
case 4: {
CFG->SAVE_OFFSET = SDRAM_SIZE - (256 * 1024);
CFG->SCR |= CFG_SCR_FLASHRAM_EN;
break;
}
case 5: {
CFG->SAVE_OFFSET = SDRAM_SIZE - (3 * 32 * 1024);
CFG->SCR |= CFG_SCR_SRAM_BANKED | CFG_SCR_SRAM_EN;
break;
}
case 6: {
CFG->SAVE_OFFSET = 0x01618000;
CFG->SCR |= CFG_SCR_FLASHRAM_EN;
break;
}
default: {
return;
}
}
save_type = type;
}

3
fw/cpu/controller/sys.h
View File

@ -104,7 +104,8 @@ typedef volatile struct cfg_regs {
#define CFG_SCR_SDRAM_WRITABLE (1 << 1)
#define CFG_SCR_DD_EN (1 << 2)
#define CFG_SCR_SRAM_EN (1 << 3)
#define CFG_SCR_FLASHRAM_EN (1 << 4)
#define CFG_SCR_SRAM_BANKED (1 << 4)
#define CFG_SCR_FLASHRAM_EN (1 << 5)
#define CFG_SCR_CPU_BUSY (1 << 30)
#define CFG_SCR_CPU_READY (1 << 31)

7
fw/rtl/cpu/cpu_cfg.sv
View File

@ -27,8 +27,9 @@ module cpu_cfg (
R_SCR: bus.rdata = {
cfg.cpu_ready,
cfg.cpu_busy,
25'd0,
24'd0,
cfg.flashram_enabled,
cfg.sram_banked,
cfg.sram_enabled,
cfg.dd_enabled,
cfg.sdram_writable,
@ -61,6 +62,7 @@ module cpu_cfg (
cfg.sdram_writable <= 1'b0;
cfg.dd_enabled <= 1'b0;
cfg.sram_enabled <= 1'b0;
cfg.sram_banked <= 1'b0;
cfg.flashram_enabled <= 1'b0;
cfg.dd_offset <= 26'h3BE_0000;
cfg.save_offset <= 26'h3FE_0000;
@ -82,11 +84,12 @@ module cpu_cfg (
if (bus.wmask[0]) begin
{
cfg.flashram_enabled,
cfg.sram_banked,
cfg.sram_enabled,
cfg.dd_enabled,
cfg.sdram_writable,
cfg.sdram_switch
} <= bus.wdata[4:0];
} <= bus.wdata[5:0];
end
end

5
fw/rtl/n64/n64_cfg.sv
View File

@ -25,7 +25,7 @@ module n64_cfg (
always_comb begin
bus.rdata = 16'd0;
if (bus.ack) begin
case (bus.address[4:1])
case (bus.address[3:1])
R_SR: bus.rdata = {cfg.cpu_ready, cfg.cpu_busy, 14'd0};
R_COMMAND: bus.rdata = {8'd0, cfg.cmd};
R_DATA_0_H: bus.rdata = cfg.data[0][31:16];
@ -34,7 +34,6 @@ module n64_cfg (
R_DATA_1_L: bus.rdata = cfg.data[1][15:0];
R_VERSION_H: bus.rdata = sc64::SC64_VER[31:16];
R_VERSION_L: bus.rdata = sc64::SC64_VER[15:0];
default: bus.rdata = 16'd0;
endcase
end
end
@ -55,7 +54,7 @@ module n64_cfg (
state <= S_WAIT;
bus.ack <= 1'b1;
if (bus.write) begin
case (bus.address[4:1])
case (bus.address[3:1])
R_COMMAND: begin
cfg.cmd <= bus.wdata[7:0];
cfg.cmd_request <= 1'b1;

44
fw/rtl/n64/n64_pi.sv
View File

@ -169,7 +169,7 @@ module n64_pi (
if (sys.reset || sys.n64_hard_reset) begin
wait_for_read_fifo <= 1'b0;
wait_for_write_fifo <= 1'b0;
end else begin
end else if (n64_pi_address_valid) begin
if (read_op || wait_for_read_fifo) begin
if (read_fifo_empty) begin
wait_for_read_fifo <= 1'b1;
@ -196,12 +196,14 @@ module n64_pi (
sc64::e_n64_id next_id;
logic [31:0] next_offset;
logic sram_selected;
logic cfg_selected;
always_ff @(posedge sys.clk) begin
if (aleh_op) begin
n64_pi_address_valid <= 1'b0;
next_offset <= 32'd0;
sram_selected <= 1'b0;
cfg_selected <= 1'b0;
if (cfg.dd_enabled) begin
if (n64_pi_ad_input == 16'h0500) begin
n64_pi_address_valid <= 1'b1;
@ -213,19 +215,32 @@ module n64_pi (
next_offset <= cfg.dd_offset + 32'h0A00_0000;
end
end
if (n64_pi_ad_input >= 16'h0800 && n64_pi_ad_input < 16'h0802) begin
if (cfg.sram_enabled) begin
n64_pi_address_valid <= 1'b1;
next_id <= sc64::ID_N64_SDRAM;
next_offset <= cfg.save_offset + 32'h0800_0000;
sram_selected <= 1'b1;
end else if (cfg.flashram_enabled) begin
if (cfg.flashram_enabled) begin
if (n64_pi_ad_input >= 16'h0800 && n64_pi_ad_input < 16'h0802) begin
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;
end
end
end else if (cfg.sram_enabled) begin
if (cfg.sram_banked) begin
if (n64_pi_ad_input >= 16'h0800 && n64_pi_ad_input < 16'h0810) begin
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;
sram_selected <= 1'b1;
end
end
end else begin
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;
sram_selected <= 1'b1;
end
end
end
if (n64_pi_ad_input >= 16'h1000 && n64_pi_ad_input < 16'h1400) begin
n64_pi_address_valid <= 1'b1;
@ -234,6 +249,19 @@ module n64_pi (
if (n64_pi_ad_input == 16'h1FFF) begin
n64_pi_address_valid <= 1'b1;
next_id <= sc64::ID_N64_CFG;
cfg_selected <= 1'b1;
end
end
if (alel_op) begin
if (sram_selected) begin
if (n64_pi_ad_input[15]) begin
n64_pi_address_valid <= 1'b0;
end
end
if (cfg_selected) begin
if (|n64_pi_ad_input[15:4]) begin
n64_pi_address_valid <= 1'b0;
end
end
end
end

3
fw/rtl/system/config.sv
View File

@ -11,6 +11,7 @@ interface if_config ();
logic sdram_writable;
logic dd_enabled;
logic sram_enabled;
logic sram_banked;
logic flashram_enabled;
logic flashram_read_mode;
logic [25:0] dd_offset;
@ -21,6 +22,7 @@ interface if_config ();
input sdram_writable,
input dd_enabled,
input sram_enabled,
input sram_banked,
input flashram_enabled,
input flashram_read_mode,
input dd_offset,
@ -53,6 +55,7 @@ interface if_config ();
output sdram_writable,
output dd_enabled,
output sram_enabled,
output sram_banked,
output flashram_enabled,
output dd_offset,
output save_offset