87 lines
2.6 KiB
C
87 lines
2.6 KiB
C
/*
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* Copyright (c) 2023-2024 Digi International Inc.
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, you can obtain one at http://mozilla.org/MPL/2.0/.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#include <stdio.h>
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#include <string.h>
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#include "file_utils.h"
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#include "platform_utils.h"
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#define DT_COMPATIBLE_NODE "/proc/device-tree/compatible"
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char* platform_names[] = {
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[PLATFORM_CC6QP] = "ccimx6qp",
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[PLATFORM_CC6SBC] = "ccimx6sbc",
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[PLATFORM_CC6UL] = "ccimx6ul",
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[PLATFORM_CC8MM] = "ccimx8mm",
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[PLATFORM_CC8MN] = "ccimx8mn",
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[PLATFORM_CC8X] = "ccimx8x",
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[PLATFORM_CC91] = "ccimx91",
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[PLATFORM_CC93] = "ccimx93",
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[PLATFORM_CCMP13] = "ccmp13",
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[PLATFORM_CCMP15] = "ccmp15",
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[PLATFORM_CCMP25] = "ccmp25",
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[PLATFORM_UNKNOWN] = "unknown"
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};
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/**
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* @brief Checks if the running platform matches the given platform name.
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*
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* The running platform is determined by reading the corresponding entry from
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* the device tree.
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*
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* @param platform_name The name of the platform to check.
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*
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* @return true if the given platform name matches the running one, false otherwise.
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*/
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platform_t get_platform() {
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FILE *fd;
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char buffer[100];
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int bytes_read = 0;
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platform_t platform = PLATFORM_UNKNOWN;
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fd = fopen(DT_COMPATIBLE_NODE, "r");
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if (fd == NULL) {
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fprintf(stderr, "No DT node " DT_COMPATIBLE_NODE "\n");
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return platform;
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}
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/* The 'compatible' node specifies multiple strings null-deliniated. The fread() will read
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* the full file, however, strstr() will consider data up to the first null byte. The strings
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* comparison must continue until bytes_read number is reached.
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*/
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while (feof(fd) == 0 && ferror(fd) == 0 && platform == PLATFORM_UNKNOWN) {
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if ((bytes_read = fread(buffer, 1, sizeof(buffer)-1, fd)) > 0 ) {
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buffer[bytes_read] = 0; // null-terminate the full string
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char *ptr = buffer;
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while (ptr < buffer + bytes_read) {
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platform = 0;
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while (platform < PLATFORM_UNKNOWN) {
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if (strstr(ptr, platform_names[platform]) != NULL) {
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goto end;
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}
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platform += 1;
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}
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ptr += strlen(ptr) + 1;
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}
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}
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}
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end:
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fclose(fd);
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return platform;
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}
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