#include <hw/id.h> #include <hw/gpio.h> #include <stdio.h> #include <stdlib.h> #include <string.h> #include <version.h> #include <timer.h> #include <board.h> static const struct board_desc boards[1] = { { .id = 0x4D31, /* M1 */ .name = "Milkymist One", .ethernet_phyadr = 1 }, }; static const struct board_desc *get_board_desc_id(unsigned short int id) { unsigned int i; for(i=0;i<sizeof(boards)/sizeof(boards[0]);i++) if(boards[i].id == id) return &boards[i]; return NULL; } static const struct board_desc *get_board_desc(void) { return get_board_desc_id((CSR_ID_SYSTEMH << 8) | CSR_ID_SYSTEML); } int get_pcb_revision(void) { /* TODO int r; unsigned int io; r = 0; io = CSR_GPIO_IN; if(io & GPIO_PCBREV0) r |= 0x1; if(io & GPIO_PCBREV1) r |= 0x2; if(io & GPIO_PCBREV2) r |= 0x4; if(io & GPIO_PCBREV3) r |= 0x8; return r;*/ return 0; } void get_soc_version(unsigned int *major, unsigned int *minor, unsigned int *subminor, unsigned int *rc) { unsigned int id; id = CSR_ID_VERSIONH; *major = (id & 0xf0) >> 4; *minor = id & 0x0f; id = CSR_ID_VERSIONL; *subminor = (id & 0xf0) >> 4; *rc = id & 0x0f; } void get_soc_version_formatted(char *version) { unsigned int major, minor, subminor, rc; get_soc_version(&major, &minor, &subminor, &rc); version += sprintf(version, "%u.%u", major, minor); if(subminor != 0) version += sprintf(version, ".%u", subminor); if(rc != 0) sprintf(version, "RC%u", rc); } const struct board_desc *brd_desc; void board_init(void) { int rev; char soc_version[13]; brd_desc = get_board_desc(); if(brd_desc == NULL) { printf("Running on unknown board, startup aborted.\n"); while(1); } rev = get_pcb_revision(); get_soc_version_formatted(soc_version); printf("Detected SoC %s at %dMHz on %s (PCB revision %d)\n", soc_version, get_system_frequency()/1000000, brd_desc->name, rev); if(strcmp(soc_version, VERSION) != 0) printf("SoC and BIOS versions do not match!\n"); if(rev > 2) printf("Unsupported PCB revision, please upgrade!\n"); }