diff options
| author | Olaf Hering <olaf@aepfle.de> | 2007-03-31 17:08:23 +0200 |
|---|---|---|
| committer | Paul Mackerras <paulus@samba.org> | 2007-04-13 03:55:17 +1000 |
| commit | 9414715a7bbb45450015e9bc2676d85d919d08d4 (patch) | |
| tree | 084dfaa3a591f17aa1debb0e3b33a31ed10b13ec | |
| parent | 02cc51149f99e3c6c106e1e16dcc2e016b1bc3b5 (diff) | |
[POWERPC] Autodetect serial console on efika
Efika boards have to be booted with console=ttyPSC0 unless there is a
graphics card plugged in. Detect if the firmware stdout is the serial
connector.
Signed-off-by: Olaf Hering <olaf@aepfle.de>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Paul Mackerras <paulus@samba.org>
| -rw-r--r-- | arch/powerpc/platforms/52xx/efika.c | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/arch/powerpc/platforms/52xx/efika.c b/arch/powerpc/platforms/52xx/efika.c index 8de03411668..31a2a8ca1de 100644 --- a/arch/powerpc/platforms/52xx/efika.c +++ b/arch/powerpc/platforms/52xx/efika.c @@ -21,6 +21,7 @@ #include <linux/initrd.h> #include <linux/timer.h> #include <linux/pci.h> +#include <linux/console.h> #include <asm/io.h> #include <asm/irq.h> @@ -221,12 +222,37 @@ static int __init efika_probe(void) return 1; } +static void __init efika_init_early(void) +{ +#ifdef CONFIG_SERIAL_MPC52xx + struct device_node *stdout_node; + const char *device_type; + + if (strstr(cmd_line, "console=")) + return; + /* find the boot console from /chosen/stdout */ + if (!of_chosen) + return; + device_type = get_property(of_chosen, "linux,stdout-path", NULL); + if (!device_type) + return; + stdout_node = of_find_node_by_path(device_type); + if (stdout_node) { + device_type = get_property(stdout_node, "device_type", NULL); + if (device_type && strcmp(device_type, "serial") == 0) + add_preferred_console("ttyPSC", 0, NULL); + of_node_put(stdout_node); + } +#endif +} + define_machine(efika) { .name = EFIKA_PLATFORM_NAME, .probe = efika_probe, .setup_arch = efika_setup_arch, .init = mpc52xx_declare_of_platform_devices, + .init_early = efika_init_early, .show_cpuinfo = efika_show_cpuinfo, .init_IRQ = mpc52xx_init_irq, .get_irq = mpc52xx_get_irq, |