/* uio_usbdebug - Run coreboot's usbdebug driver in userspace */ /* SPDX-License-Identifier: GPL-2.0-only */ #include <stdio.h> #include <sys/stat.h> #include <fcntl.h> #include <unistd.h> #include <sys/mman.h> #include <pci/pci.h> /* coreboot's arch/io.h conflicts with libc's sys/io.h, so declare this here: */ int ioperm(unsigned long from, unsigned long num, int turn_on); #include <arch/io.h> #include <console/usb.h> void *ehci_bar; struct pci_access *pci_access; int main(int argc, char *argv[]) { if (argc != 2) { fprintf(stderr, "Usage: %s <uio-dev>\n", argv[0]); return 1; } const int fd = open(argv[1], O_RDWR); if (fd < 0) { perror("Failed to open uio device"); return 2; } ehci_bar = mmap(NULL, 1 << 8, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0); if (MAP_FAILED == ehci_bar) { perror("Failed to map ehci bar"); close(fd); return 3; } ioperm(0x80, 1, 1); pci_access = pci_alloc(); pci_init(pci_access); usbdebug_init(); pci_cleanup(pci_access); munmap(ehci_bar, 1 << 8); close(fd); return 0; }