| /* |
| * SPDX-FileCopyrightText: 2020 Efabless Corporation |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| * SPDX-License-Identifier: Apache-2.0 |
| */ |
| |
| // This include is relative to $CARAVEL_PATH (see Makefile) |
| #include "verilog/dv/caravel/defs.h" |
| #include "verilog/dv/caravel/stub.c" |
| |
| // Caravel allows user project to use 0x30xx_xxxx address space on Wishbone bus |
| // 0x3000_0000 till 3000_03ff -> 256 Words of OpenRAM (1024 Bytes) |
| #define OPENRAM_BASE_ADDRESS 0x30000000 |
| #define OPENRAM_SIZE_DWORDS 256ul |
| #define OPENRAM_SIZE_BYTES (4ul * OPENRAM_SIZE_DWORDS) |
| #define OPENRAM_ADDRESS_MASK (OPENRAM_SIZE_BYTES - 1) |
| #define OPENRAM_MEM(offset) (*(volatile uint32_t*)(OPENRAM_BASE_ADDRESS + (offset & OPENRAM_ADDRESS_MASK))) |
| |
| // Generates 32bits wide value out of address, not random |
| unsigned long generate_value(unsigned long address) |
| { |
| return ((address & OPENRAM_ADDRESS_MASK) << 19) | |
| ((~address & OPENRAM_ADDRESS_MASK) << 1); |
| } |
| |
| void main() |
| { |
| unsigned int address, err_cnt = 0; |
| |
| /* |
| IO Control Registers |
| | DM | VTRIP | SLOW | AN_POL | AN_SEL | AN_EN | MOD_SEL | INP_DIS | HOLDH | OEB_N | MGMT_EN | |
| | 3-bits | 1-bit | 1-bit | 1-bit | 1-bit | 1-bit | 1-bit | 1-bit | 1-bit | 1-bit | 1-bit | |
| |
| Output: 0000_0110_0000_1110 (0x1808) = GPIO_MODE_USER_STD_OUTPUT |
| | DM | VTRIP | SLOW | AN_POL | AN_SEL | AN_EN | MOD_SEL | INP_DIS | HOLDH | OEB_N | MGMT_EN | |
| | 110 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | |
| |
| |
| Input: 0000_0001_0000_1111 (0x0402) = GPIO_MODE_USER_STD_INPUT_NOPULL |
| | DM | VTRIP | SLOW | AN_POL | AN_SEL | AN_EN | MOD_SEL | INP_DIS | HOLDH | OEB_N | MGMT_EN | |
| | 001 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | |
| |
| */ |
| |
| /* Set up the housekeeping SPI to be connected internally so */ |
| /* that external pin changes don't affect it. */ |
| |
| reg_spimaster_config = 0xa002; // Enable, prescaler = 2, |
| // connect to housekeeping SPI |
| |
| // Connect the housekeeping SPI to the SPI master |
| // so that the CSB line is not left floating. This allows |
| // all of the GPIO pins to be used for user functions. |
| |
| |
| // All GPIO pins are configured to be output |
| // Used to flad the start/end of a test |
| |
| reg_mprj_io_31 = GPIO_MODE_MGMT_STD_OUTPUT; |
| reg_mprj_io_30 = GPIO_MODE_MGMT_STD_OUTPUT; |
| reg_mprj_io_29 = GPIO_MODE_MGMT_STD_OUTPUT; |
| reg_mprj_io_28 = GPIO_MODE_MGMT_STD_OUTPUT; |
| reg_mprj_io_27 = GPIO_MODE_MGMT_STD_OUTPUT; |
| reg_mprj_io_26 = GPIO_MODE_MGMT_STD_OUTPUT; |
| reg_mprj_io_25 = GPIO_MODE_MGMT_STD_OUTPUT; |
| reg_mprj_io_24 = GPIO_MODE_MGMT_STD_OUTPUT; |
| reg_mprj_io_23 = GPIO_MODE_MGMT_STD_OUTPUT; |
| reg_mprj_io_22 = GPIO_MODE_MGMT_STD_OUTPUT; |
| reg_mprj_io_21 = GPIO_MODE_MGMT_STD_OUTPUT; |
| reg_mprj_io_20 = GPIO_MODE_MGMT_STD_OUTPUT; |
| reg_mprj_io_19 = GPIO_MODE_MGMT_STD_OUTPUT; |
| reg_mprj_io_18 = GPIO_MODE_MGMT_STD_OUTPUT; |
| reg_mprj_io_17 = GPIO_MODE_MGMT_STD_OUTPUT; |
| reg_mprj_io_16 = GPIO_MODE_MGMT_STD_OUTPUT; |
| |
| /* Apply configuration */ |
| reg_mprj_xfer = 1; |
| while (reg_mprj_xfer == 1); |
| |
| // Flag start of the test |
| reg_mprj_datal = 0xAB600000; |
| |
| // Fill memory |
| for (address = 0; address < OPENRAM_SIZE_DWORDS; address += 4) |
| { |
| // generate some dword based on address |
| OPENRAM_MEM(address) = generate_value(address); |
| } |
| |
| // Check memory |
| for (address = 0; address < OPENRAM_SIZE_DWORDS; address += 4) |
| { |
| // check dword based on address |
| if (OPENRAM_MEM(address) != generate_value(address)) |
| { |
| reg_mprj_datal = 0xAB61dead; |
| return; // instant fail |
| } |
| } |
| |
| reg_mprj_datal = 0xAB610000; // pass |
| } |
| |