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head/sys/dev/uart/uart_cpu_fdt.c
| Show First 20 Lines • Show All 128 Lines • ▼ Show 20 Lines | |||||
| { | { | ||||
| const char *propnames[] = {"stdout-path", "linux,stdout-path", "stdout", | const char *propnames[] = {"stdout-path", "linux,stdout-path", "stdout", | ||||
| "stdin-path", "stdin", NULL}; | "stdin-path", "stdin", NULL}; | ||||
| const char **name; | const char **name; | ||||
| struct uart_class *class; | struct uart_class *class; | ||||
| phandle_t node, chosen; | phandle_t node, chosen; | ||||
| pcell_t shift, br, rclk; | pcell_t shift, br, rclk; | ||||
| u_long start, size, pbase, psize; | u_long start, size, pbase, psize; | ||||
| char *cp; | |||||
| int err; | int err; | ||||
| uart_bus_space_mem = fdtbus_bs_tag; | uart_bus_space_mem = fdtbus_bs_tag; | ||||
| uart_bus_space_io = NULL; | uart_bus_space_io = NULL; | ||||
| /* Allow overriding the FDT using the environment. */ | /* Allow overriding the FDT using the environment. */ | ||||
| class = &uart_ns8250_class; | class = &uart_ns8250_class; | ||||
| err = uart_getenv(devtype, di, class); | err = uart_getenv(devtype, di, class); | ||||
| if (!err) | if (!err) | ||||
| return (0); | return (0); | ||||
| if (devtype != UART_DEV_CONSOLE) | if (devtype != UART_DEV_CONSOLE) | ||||
| return (ENXIO); | return (ENXIO); | ||||
| /* Has the user forced a specific device node? */ | |||||
| cp = kern_getenv("hw.fdt.console"); | |||||
| if (cp == NULL) { | |||||
| /* | /* | ||||
| * Retrieve /chosen/std{in,out}. | * Retrieve /chosen/std{in,out}. | ||||
| */ | */ | ||||
| node = -1; | node = -1; | ||||
| if ((chosen = OF_finddevice("/chosen")) != -1) { | if ((chosen = OF_finddevice("/chosen")) != -1) { | ||||
| for (name = propnames; *name != NULL; name++) { | for (name = propnames; *name != NULL; name++) { | ||||
| if (phandle_chosen_propdev(chosen, *name, &node) == 0) | if (phandle_chosen_propdev(chosen, *name, | ||||
| &node) == 0) | |||||
| break; | break; | ||||
| } | } | ||||
| } | } | ||||
| if (chosen == -1 || *name == NULL) | if (chosen == -1 || *name == NULL) | ||||
| node = OF_finddevice("serial0"); /* Last ditch */ | node = OF_finddevice("serial0"); /* Last ditch */ | ||||
| } else { | |||||
| node = OF_finddevice(cp); | |||||
| } | |||||
| if (node == -1) /* Can't find anything */ | if (node == -1) /* Can't find anything */ | ||||
| return (ENXIO); | return (ENXIO); | ||||
| /* | /* | ||||
| * Check old style of UART definition first. Unfortunately, the common | * Check old style of UART definition first. Unfortunately, the common | ||||
| * FDT processing is not possible if we have clock, power domains and | * FDT processing is not possible if we have clock, power domains and | ||||
| * pinmux stuff. | * pinmux stuff. | ||||
| ▲ Show 20 Lines • Show All 49 Lines • Show Last 20 Lines | |||||