patch-2.4.23 linux-2.4.23/drivers/char/hcdp_serial.c
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- Lines: 42
- Date:
2003-11-28 10:26:20.000000000 -0800
- Orig file:
linux-2.4.22/drivers/char/hcdp_serial.c
- Orig date:
2002-11-28 15:53:12.000000000 -0800
diff -urN linux-2.4.22/drivers/char/hcdp_serial.c linux-2.4.23/drivers/char/hcdp_serial.c
@@ -219,3 +219,41 @@
printk("Leaving setup_serial_hcdp()\n");
#endif
}
+
+#ifdef CONFIG_IA64_EARLY_PRINTK_UART
+unsigned long hcdp_early_uart(void)
+{
+ efi_system_table_t *systab;
+ efi_config_table_t *config_tables;
+ hcdp_t *hcdp = 0;
+ hcdp_dev_t *dev;
+ int i;
+
+ systab = (efi_system_table_t *) ia64_boot_param->efi_systab;
+ if (!systab)
+ return 0;
+ systab = __va(systab);
+
+ config_tables = (efi_config_table_t *) systab->tables;
+ if (!config_tables)
+ return 0;
+ config_tables = __va(config_tables);
+
+ for (i = 0; i < systab->nr_tables; i++) {
+ if (efi_guidcmp(config_tables[i].guid, HCDP_TABLE_GUID) == 0) {
+ hcdp = (hcdp_t *) config_tables[i].table;
+ break;
+ }
+ }
+ if (!hcdp)
+ return 0;
+ hcdp = __va(hcdp);
+
+ for (i = 0, dev = hcdp->hcdp_dev; i < hcdp->num_entries; i++, dev++) {
+ if (dev->type == HCDP_DEV_CONSOLE)
+ return (u64) dev->base_addr.addrhi << 32
+ | dev->base_addr.addrlo;
+ }
+ return 0;
+}
+#endif
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