fpga/mor1kx-bemicrocv
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Bootrom, icache, bugfixes, ...

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This commit is contained in:
Markus Koch 2017-03-02 22:22:43 +01:00
parent af2cad643b
commit 34d5aadf0c
5 changed files with 63 additions and 51 deletions
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18
cores/flashrom-wb/flashrom_wb.vhd
View File

@ -17,6 +17,7 @@ entity flashrom_wb is
-- Wishbone
wb_in : in wishbone_v3_slave_in;
wb_out : out wishbone_v3_slave_out;
dbg_allow_write : in std_logic;
-- SPI Flash Hardware Signals
spi_si : out std_logic; -- spi serial in
@ -58,7 +59,7 @@ architecture rtl of flashrom_wb is
signal cache_dOut : std_logic_vector(31 downto 0);
signal cache_dIn : std_logic_vector(31 downto 0);
signal data_in_shift : std_logic_vector(31 downto 0);
signal delay_cycle : std_logic;
signal delay_cycle : integer range 0 to 1;
begin
flashrom_controller_inst : entity work.flashrom_controller
port map(
@ -91,7 +92,6 @@ begin
sync_stb <= '0';
wb_out.ACK <= '0';
cache_we <= '0';
delay_cycle <= '0';
end procedure default_state;
procedure reset_state is
@ -101,6 +101,7 @@ begin
bootup_complete <= '0';
dirty <= '0';
cache_control_addr <= (others => '0');
delay_cycle <= 1;
end procedure reset_state;
begin
if rst = '1' then
@ -116,8 +117,11 @@ begin
state <= IDLE;
end if;
when IDLE =>
if ready = '1' and delay_cycle = '0' and bootup_complete = '1' then
if wb_in.CYC = '1' and wb_in.STB = '1' then
if (delay_cycle /= 0) then
delay_cycle <= delay_cycle - 1;
end if;
if ready = '1' and delay_cycle = 0 and bootup_complete = '1' then
if wb_in.CYC = '1' and wb_in.STB = '1' and wb_out.ACK <= '0' then -- wb_out.ACK ensures empty period between accesses
if (requested_page /= current_page) then -- Page swap required
if (dirty = '0') then
state <= LOADPAGE;
@ -133,7 +137,7 @@ begin
else -- Same page
wb_out.ACK <= '1';
if wb_in.WE = '1' then
dirty <= '1';
dirty <= dbg_allow_write; -- TODO: SWITCH BACK TO '1' TO ALLOW WRITES!
cache_dIn <= wb_in.DAT;
cache_we <= '1';
cache_control_addr <= unsigned(wb_in.ADR(7 downto 0));
@ -156,7 +160,7 @@ begin
cache_we <= '1';
if cache_control_addr = 254 then
state <= IDLE;
delay_cycle <= '1';
delay_cycle <= 1;
end if;
end if;
when WRITEPAGE =>
@ -174,7 +178,7 @@ begin
if cache_control_addr = 0 then
state <= IDLE;
dirty <= '0';
delay_cycle <= '1';
delay_cycle <= 1; -- TODO: 1 should be enough
end if;
end if;
end case;

2
cores/uart/uart_wb.vhd
View File

@ -113,7 +113,7 @@ begin
SR(i)(1) <= tx_busy(i); -- TXActive
-- WB
if slave_i.CYC = '1' and slave_i.STB = '1' then
if slave_i.CYC = '1' and slave_i.STB = '1' and slave_o.ACK <= '0' then
if unsigned(slave_i.ADR) = to_unsigned((registersPerCore * i), slave_i.ADR'length) then -- CRx
slave_o.DAT <= CR(i);
if slave_i.we = '1' then

24
design/top.vhd
View File

@ -152,12 +152,12 @@ begin
-- wb_out => intercon_slave_o(INTERCON_ID_SRAM)
-- );
-- CPU
-- CPU (boots to 0x000 instead of 0x100)
interrupt <= (others => '0');
mor1kx_vhdl_inst : entity ip.mor1kx_vhdl
port map(
clk => clk,
rst => mor1kx_rst,
rst => mor1kx_rst or GPIOA(10),
data_o => intercon_master_o(1),
data_i => intercon_master_i(1),
inst_o => intercon_master_o(0),
@ -285,7 +285,16 @@ begin
avl_write_req_0 <= (intercon_slave_i(INTERCON_ID_DDR3).STB and intercon_slave_i(INTERCON_ID_DDR3).WE) and avl_reqEn;
avl_size_0 <= "001";
intercon_slave_o(INTERCON_ID_DDR3).DAT <= avl_rdata_0;
--intercon_slave_o(INTERCON_ID_DDR3).DAT <= avl_rdata_0;
-- DDR3 first words include boot rom code
ddr3_mem_data : with intercon_slave_i(INTERCON_ID_DDR3).ADR select intercon_slave_o(INTERCON_ID_DDR3).DAT <=
x"18604000" when x"00000000",
--x"18600200" when x"00000000",
x"a8630100" when x"00000004",
x"44001800" when x"00000008",
x"15000000" when x"0000000c",
avl_rdata_0 when others; -- nop
intercon_slave_o(INTERCON_ID_DDR3).ERR <= '0';
intercon_slave_o(INTERCON_ID_DDR3).RTY <= '0';
intercon_slave_o(INTERCON_ID_DDR3).ACK <= (readAck or writeAck) and intercon_slave_i(INTERCON_ID_DDR3).STB;
@ -309,6 +318,7 @@ begin
-- Non Volatile Memory
flashrom_wb_inst : entity work.flashrom_wb
port map(
dbg_allow_write => not GPIOA(11),
clk => clk,
rst => rst,
clr => '0',
@ -363,16 +373,14 @@ begin
master_i => intercon_slave_o,
master_o => intercon_slave_i,
address => (
--INTERCON_ID_SRAM => x"00000000",
INTERCON_ID_DDR3 => x"00000000",
INTERCON_ID_FLASH => x"40000000",
INTERCON_ID_GPIO => x"80000000",
INTERCON_ID_UART => x"80000100"
INTERCON_ID_GPIO => x"C0000000",
INTERCON_ID_UART => x"C0000100"
),
mask => (
--INTERCON_ID_SRAM => x"ffffff00", -- TODO: Match size of SRAM (or remove)
INTERCON_ID_DDR3 => x"f0000000",
INTERCON_ID_FLASH => x"fffff000", -- TODO: Correct size
INTERCON_ID_FLASH => x"ffc00000",
INTERCON_ID_GPIO => x"fffffff0",
INTERCON_ID_UART => x"ffffffc0"
)

2
ip/mor1kx-mor1kx_v4/rtl/verilog/mor1kx-defines.v
View File

@ -234,7 +234,7 @@
`include "mor1kx-sprs.v"
/* Exception addresses */
`define OR1K_RESET_VECTOR 5'h01
`define OR1K_RESET_VECTOR 5'h00
`define OR1K_BERR_VECTOR 5'h02
`define OR1K_DPF_VECTOR 5'h03
`define OR1K_IPF_VECTOR 5'h04

2
ip/mor1kx-mor1kx_v4/rtl/vhdl/mor1kx_pkg.vhd
View File

@ -20,7 +20,7 @@ package mor1kx_pkg is
constant FEATURE_DMMU_HW_TLB_RELOAD : string := "NONE";
constant OPTION_DMMU_SET_WIDTH : integer := 6;
constant OPTION_DMMU_WAYS : integer := 1;
constant FEATURE_INSTRUCTIONCACHE : string := "NONE";
constant FEATURE_INSTRUCTIONCACHE : string := "ENABLED";
constant OPTION_ICACHE_BLOCK_WIDTH : integer := 5;
constant OPTION_ICACHE_SET_WIDTH : integer := 9;
constant OPTION_ICACHE_WAYS : integer := 2;