of: support passing console options with stdout-path
Support specifying console options (like with console=ttyXN,<options>) by appending them to the stdout-path property after a separating ':'. Example: stdout-path = "uart0:115200"; Signed-off-by: Leif Lindholm <leif.lindholm@linaro.org> [grant.likely: minor rework to shorten the diffstat] Signed-off-by: Grant Likely <grant.likely@linaro.org>
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@ -37,6 +37,7 @@ EXPORT_SYMBOL(of_root);
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struct device_node *of_chosen;
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struct device_node *of_aliases;
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struct device_node *of_stdout;
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static const char *of_stdout_options;
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struct kset *of_kset;
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@ -1852,7 +1853,7 @@ void of_alias_scan(void * (*dt_alloc)(u64 size, u64 align))
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if (IS_ENABLED(CONFIG_PPC) && !name)
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name = of_get_property(of_aliases, "stdout", NULL);
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if (name)
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of_stdout = of_find_node_by_path(name);
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of_stdout = of_find_node_opts_by_path(name, &of_stdout_options);
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}
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if (!of_aliases)
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@ -1978,7 +1979,8 @@ bool of_console_check(struct device_node *dn, char *name, int index)
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{
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if (!dn || dn != of_stdout || console_set_on_cmdline)
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return false;
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return !add_preferred_console(name, index, NULL);
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return !add_preferred_console(name, index,
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kstrdup(of_stdout_options, GFP_KERNEL));
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}
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EXPORT_SYMBOL_GPL(of_console_check);
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