-#ifdef CONFIG_PPC_MULTIPLATFORM
- volatile unsigned char *base;
-
- if (_machine == _MACH_Pmac) {
- struct device_node *np;
- unsigned long addr;
-#ifdef CONFIG_BOOTX_TEXT
- if (!use_screen && !use_serial
- && !machine_is_compatible("iMac")) {
- /* see if there is a keyboard in the device tree
- with a parent of type "adb" */
- for (np = find_devices("keyboard"); np; np = np->next)
- if (np->parent && np->parent->type
- && strcmp(np->parent->type, "adb") == 0)
- break;
-
- /* needs to be hacked if xmon_printk is to be used
- from within find_via_pmu() */
-#ifdef CONFIG_ADB_PMU
- if (np != NULL && boot_text_mapped && find_via_pmu())
- use_screen = 1;
-#endif
-#ifdef CONFIG_ADB_CUDA
- if (np != NULL && boot_text_mapped && find_via_cuda())
- use_screen = 1;
-#endif
- }
- if (!use_screen && (np = find_devices("escc")) != NULL) {
- /*
- * look for the device node for the serial port
- * we're using and see if it says it has a modem
- */
- char *name = xmon_use_sccb? "ch-b": "ch-a";
- char *slots;
- int l;
-
- np = np->child;
- while (np != NULL && strcmp(np->name, name) != 0)
- np = np->sibling;
- if (np != NULL) {
- /* XXX should parse this properly */
- channel_node = np;
- slots = get_property(np, "slot-names", &l);
- if (slots != NULL && l >= 10
- && strcmp(slots+4, "Modem") == 0)
- via_modem = 1;
- }
- }
- btext_drawstring("xmon uses ");
- if (use_screen)
- btext_drawstring("screen and keyboard\n");
- else {
- if (via_modem)
- btext_drawstring("modem on ");
- btext_drawstring(xmon_use_sccb? "printer": "modem");
- btext_drawstring(" port\n");
- }
-
-#endif /* CONFIG_BOOTX_TEXT */
-
-#ifdef CHRP_ESCC
- addr = 0xc1013020;
-#else
- addr = 0xf3013020;
-#endif
- TXRDY = 4;
- RXRDY = 1;
-
- np = find_devices("mac-io");
- if (np && np->n_addrs)
- addr = np->addrs[0].address + 0x13020;
- base = (volatile unsigned char *) ioremap(addr & PAGE_MASK, PAGE_SIZE);
- sccc = base + (addr & ~PAGE_MASK);
- sccd = sccc + 0x10;
-
- } else {
- base = (volatile unsigned char *) isa_io_base;
- if (_machine == _MACH_chrp)
- base = (volatile unsigned char *)
- ioremap(chrp_find_phys_io_base(), 0x1000);
-
- sccc = base + 0x3fd;
- sccd = base + 0x3f8;
- if (xmon_use_sccb) {
- sccc -= 0x100;
- sccd -= 0x100;
- }
- TXRDY = 0x20;
- RXRDY = 1;
- DLAB = 0x80;
- }
-#elif defined(CONFIG_GEMINI)