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authorHans de Goede <hdegoede@redhat.com>2015-02-20 16:55:12 +0100
committerHans de Goede <hdegoede@redhat.com>2015-02-21 16:53:40 +0100
commitf3133962f469a8b6b9ba237ba670f0ca7c88a02e (patch)
tree97f41fbe24a56294c78af6669c117906357bc607 /include/configs
parentf388a26d1132dae7ffe123cd7bd9adf78d4f7b57 (diff)
sunxi: Set the /chosen/stdout-path fdt property for sunxi boards
While discussing with some people how to get the Linux kernel to do the right thing wrt sending output to both the serial console and the hdmi out / lcd screen when booting on ARM devices, Grant Likely pointed out that there already is a solution for this. All we need to do is set the /chosen/stdout-path fdt property, and if no console= arguments were specified on the kernel commandline the kernel will honor this and add this device as a console (next to the primary video output on hdmi). And u-boot already has support for setting this, all we need to do is define OF_STDOUT_PATH and then everything will just work ootb, without people needing to meddle with adding console= arguments in extlinux.conf . Signed-off-by: Hans de Goede <hdegoede@redhat.com> Acked-by: Ian Campbell <ijc@hellion.org.uk> Reviewed-by: Tom Rini <trini@ti.com>
Diffstat (limited to 'include/configs')
-rw-r--r--include/configs/sunxi-common.h14
1 files changed, 14 insertions, 0 deletions
diff --git a/include/configs/sunxi-common.h b/include/configs/sunxi-common.h
index f5efebbf28..0b4f0a07b7 100644
--- a/include/configs/sunxi-common.h
+++ b/include/configs/sunxi-common.h
@@ -210,6 +210,20 @@ extern int soft_i2c_gpio_scl;
#define CONFIG_CONS_INDEX 1 /* UART0 */
#endif
+#if CONFIG_CONS_INDEX == 1
+#ifdef CONFIG_MACH_SUN9I
+#define OF_STDOUT_PATH "/soc/serial@07000000:115200"
+#else
+#define OF_STDOUT_PATH "/soc@01c00000/serial@01c28000:115200"
+#endif
+#elif CONFIG_CONS_INDEX == 2 && defined(CONFIG_MACH_SUN5I)
+#define OF_STDOUT_PATH "/soc@01c00000/serial@01c28400:115200"
+#elif CONFIG_CONS_INDEX == 5 && defined(CONFIG_MACH_SUN8I)
+#define OF_STDOUT_PATH "/soc@01c00000/serial@01f02800:115200"
+#else
+#error Unsupported console port nr. Please fix stdout-path in sunxi-common.h.
+#endif
+
/* GPIO */
#define CONFIG_SUNXI_GPIO
#define CONFIG_SPL_GPIO_SUPPORT