diff options
Diffstat (limited to 'source/hal/platform/mps3/source/platform_drivers.c')
| -rw-r--r-- | source/hal/platform/mps3/source/platform_drivers.c | 131 |
1 files changed, 131 insertions, 0 deletions
diff --git a/source/hal/platform/mps3/source/platform_drivers.c b/source/hal/platform/mps3/source/platform_drivers.c new file mode 100644 index 0000000..da2b39c --- /dev/null +++ b/source/hal/platform/mps3/source/platform_drivers.c @@ -0,0 +1,131 @@ +/* + * Copyright (c) 2022 Arm Limited. All rights reserved. + * SPDX-License-Identifier: Apache-2.0 + * + * 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. + */ + +#include "platform_drivers.h" + +#include "uart_stdout.h" /* stdout over UART. */ +#include "log_macros.h" /* Logging functions */ +#include "device_mps3.h" /* FPGA level definitions and functions. */ + +#include <string.h> /* For strncpy */ + +/** + * @brief Checks if the platform is valid by checking + * the CPU ID for the FPGA implementation against + * the register from the CPU core. + * @return 0 if successful, 1 otherwise + */ +static int verify_platform(void); + +int platform_init(void) +{ + int err = 0; + + SystemCoreClockUpdate(); /* From start up code */ + + /* UART init - will enable valid use of printf (stdout + * re-directed at this UART (UART0) */ + UartStdOutInit(); + + if (0 != (err = verify_platform())) { + return err; + } + + /** TODO: Add ARM NPU and TA init here */ + return 0; +} + +void platform_release(void) +{ + __disable_irq(); +} + +void platform_name(char* name, size_t size) +{ + strncpy(name, DESIGN_NAME, size); +} + +#define CREATE_MASK(msb, lsb) (int)(((1U << ((msb) - (lsb) + 1)) - 1) << (lsb)) +#define MASK_BITS(arg, msb, lsb) (int)((arg) & CREATE_MASK(msb, lsb)) +#define EXTRACT_BITS(arg, msb, lsb) (int)(MASK_BITS(arg, msb, lsb) >> (lsb)) + +static int verify_platform(void) +{ + uint32_t id = 0; + uint32_t fpgaid = 0; + uint32_t apnote = 0; + uint32_t rev = 0; + uint32_t aid = 0; + uint32_t fpga_clk = 0; + const uint32_t ascii_A = (uint32_t)('A'); + + /* Initialise the LEDs as the switches are */ + MPS3_FPGAIO->LED = MPS3_FPGAIO->SWITCHES & 0xFF; + + info("Processor internal clock: %" PRIu32 "Hz\n", GetMPS3CoreClock()); + + /* Get revision information from various registers */ + rev = MPS3_SCC->CFG_REG4; + fpgaid = MPS3_SCC->SCC_ID; + aid = MPS3_SCC->SCC_AID; + apnote = EXTRACT_BITS(fpgaid, 15, 4); + fpga_clk = GetMPS3CoreClock(); + + info("V2M-MPS3 revision %c\n\n", (char)(rev + ascii_A)); + info("Application Note AN%" PRIx32 ", Revision %c\n", apnote, + (char)(EXTRACT_BITS(aid, 23, 20) + ascii_A)); + info("MPS3 build %d\n", EXTRACT_BITS(aid, 31, 24)); + info("MPS3 core clock has been set to: %" PRIu32 "Hz\n", fpga_clk); + + /* Display CPU ID */ + id = SCB->CPUID; + info("CPU ID: 0x%08" PRIx32 "\n", id); + + if(EXTRACT_BITS(id, 15, 8) == 0xD2) { + if (EXTRACT_BITS(id, 7, 4) == 2) { + info ("CPU: Cortex-M55 r%dp%d\n\n", + EXTRACT_BITS(id, 23, 20),EXTRACT_BITS(id, 3, 0)); +#if defined (CPU_CORTEX_M55) + /* CPU ID should be "0x_41_0f_d2_20" for Cortex-M55 */ + return 0; +#endif /* CPU_CORTEX_M55 */ + } else if (EXTRACT_BITS(id, 7, 4) == 1) { + info ("CPU: Cortex-M33 r%dp%d\n\n", + EXTRACT_BITS(id, 23, 20),EXTRACT_BITS(id, 3, 0)); +#if defined (CPU_CORTEX_M33) + return 0; +#endif /* CPU_CORTEX_M33 */ + } else if (EXTRACT_BITS(id, 7, 4) == 0) { + info ("CPU: Cortex-M23 r%dp%d\n\n", + EXTRACT_BITS(id, 23, 20),EXTRACT_BITS(id, 3, 0)); + } else { + info ("CPU: Cortex-M processor family"); + } + } else if (EXTRACT_BITS(id, 15, 8) == 0xC6) { + info ("CPU: Cortex-M%d+ r%dp%d\n\n", + EXTRACT_BITS(id, 7, 4), EXTRACT_BITS(id, 23, 20), + EXTRACT_BITS(id, 3, 0)); + } else { + info ("CPU: Cortex-M%d r%dp%d\n\n", + EXTRACT_BITS(id, 7, 4), EXTRACT_BITS(id, 23, 20), + EXTRACT_BITS(id, 3, 0)); + } + + /* If the CPU is anything other than M33 or M55, we return 1 */ + printf_err("CPU mismatch!\n"); + return 1; +} |