Eduard Shishkin 4f1c73d592 zipl: add environment interpretation by stage3 of boot ...

Before starting the kernel:

1. parse environment block (if any) and create a hash table
   of all found pairs (NAME, VALUE);
2. scan the command line, which already contains extra-parameters
   (if any), and for each found ${NAME} replace it with VALUE, as
   found in the hash table by NAME.

Reviewed-by: Stefan Haberland <sth@linux.ibm.com>
Reviewed-by: Peter Oberparleiter <oberpar@linux.ibm.com>
Signed-off-by: Eduard Shishkin <edward6@linux.ibm.com>
Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>

2021-10-01 14:59:56 +02:00

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