On Wed, May 16, 2018 at 01:18:26PM -0700, Andrey Smirnov wrote:
> Pass barebox-detected bootsource to Linux to make it availible to
> Linux userspace. That information is passed as full path to the node
> corresponding to the bootsource and is placed under /chosen/bootsource
> and it can be read under Linux in
>
> /sys/firmware/devicetree/base/chosen/bootsource
>
> Signed-off-by: Andrey Smirnov <andrew.smirnov@xxxxxxxxx>
> ---
> common/oftree.c | 46 +++++++++++++++++++++++++++++++++++++++++++++-
> 1 file changed, 45 insertions(+), 1 deletion(-)
>
> diff --git a/common/oftree.c b/common/oftree.c
> index 8a2ede4c6..5ab6bf089 100644
> --- a/common/oftree.c
> +++ b/common/oftree.c
> @@ -11,6 +11,7 @@
> #include <getopt.h>
> #include <init.h>
> #include <boot.h>
> +#include <bootsource.h>
> #include <i2c/i2c.h>
>
> #define MAX_LEVEL 32 /* how deeply nested we will go */
> @@ -114,6 +115,47 @@ void of_print_cmdline(struct device_node *root)
> printf("commandline: %s\n", cmdline);
> }
>
> +static int of_fixup_bootargs_bootsource(struct device_node *root,
> + struct device_node *chosen)
> +{
> + char *alias_name = bootsource_get_alias_name();
> + struct device_node *bootsource;
> + struct device_node *aliasnp;
> + struct property *p;
> + int ret;
> +
> + if (!alias_name)
> + return 0;
> +
> + bootsource = of_find_node_by_alias(root, alias_name);
> + /*
> + * If kerenel DTB doesn't have the appropriate alias set up,
> + * give up and exit early. No error is reported.
> + */
s/kerenel/kernel/
> + if (!bootsource) {
> + ret = 0;
> + goto exit;
> + }
> +
> + aliasnp = of_find_node_by_path_from(root, "/aliases");
> + if (!aliasnp) {
> + ret = -ENOENT;
> + goto exit;
> + }
> +
> + p = of_find_property(aliasnp, alias_name, NULL);
> + if (!p) {
> + ret = -ENOENT;
> + goto exit;
> + }
This seems unnecessary. Pass bootsource->full_name to of_set_property
below.
Sascha
--
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