Source of pcdp.c - linux-imx - PHYTEC BitBucket (Stash)

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​x
 
{
    struct pcdp *pcdp;
    struct pcdp_uart *uart;
    struct pcdp_device *dev, *end;
    int i, serial = 0;
    int rc = -ENODEV;
​
    if (efi.hcdp == EFI_INVALID_TABLE_ADDR)
        return -ENODEV;
​
    pcdp = early_ioremap(efi.hcdp, 4096);
    pcdp = early_memremap(efi.hcdp, 4096);
    printk(KERN_INFO "PCDP: v%d at 0x%lx\n", pcdp->rev, efi.hcdp);
​
    if (strstr(cmdline, "console=hcdp")) {
        if (pcdp->rev < 3)
            serial = 1;
    } else if (strstr(cmdline, "console=")) {
        printk(KERN_INFO "Explicit \"console=\"; ignoring PCDP\n");
        goto out;
    }
​
         dev = (struct pcdp_device *) ((u8 *) dev + dev->length)) {
        if (dev->flags & PCDP_PRIMARY_CONSOLE) {
            if (dev->type == PCDP_CONSOLE_VGA) {
                rc = setup_vga_console(dev);
                goto out;
            }
        }
    }
​
out:
    early_iounmap(pcdp, 4096);
    early_memunmap(pcdp, 4096);
    return rc;
}