[U-Boot] [PATCH V3] i.MX6Q: mx6qsabrelite: Add keypress support to alter boot flow
Dirk Behme
dirk.behme at googlemail.com
Sat Apr 21 07:46:00 CEST 2012
Dear Eric,
On 16.04.2012 21:33, Eric Nelson wrote:
> Uses the 'magic_keys' idiom as described in doc/README.kbd:
> http://lists.denx.de/pipermail/u-boot/2012-April/122502.html
>
> Signed-off-by: Eric Nelson<eric.nelson at boundarydevices.com>
> ---
> V2 based on suggestion by Wolfgang to follow prior implementations.
> V3 fixes style issues highlighted by Marek Vasut.
>
> board/freescale/mx6qsabrelite/mx6qsabrelite.c | 121 ++++++++++++++++++++++++-
> include/configs/mx6qsabrelite.h | 3 +
> 2 files changed, 122 insertions(+), 2 deletions(-)
>
> diff --git a/board/freescale/mx6qsabrelite/mx6qsabrelite.c b/board/freescale/mx6qsabrelite/mx6qsabrelite.c
> index 1d09a72..3684216 100644
> --- a/board/freescale/mx6qsabrelite/mx6qsabrelite.c
> +++ b/board/freescale/mx6qsabrelite/mx6qsabrelite.c
...
> +#ifdef CONFIG_PREBOOT
> +static char const kbd_magic_prefix[] = "key_magic";
> +static char const kbd_command_prefix[] = "key_cmd";
> +
> +static void preboot_keys(void)
> +{
> + int i, numpressed;
mx6qsabrelite.c: In function 'preboot_keys':
mx6qsabrelite.c:408: warning: unused variable 'i'
> + char keypress[ARRAY_SIZE(buttons)+1];
> + numpressed = read_keys(keypress);
> + if (numpressed) {
> + char *kbd_magic_keys = getenv("magic_keys");
> + char *suffix;
> + /*
> + * loop over all magic keys
> + */
> + for (suffix = kbd_magic_keys; *suffix; ++suffix) {
> + char *keys;
> + char magic[sizeof(kbd_magic_prefix) + 1];
> + sprintf(magic, "%s%c", kbd_magic_prefix, *suffix);
> + keys = getenv(magic);
> + if (keys) {
> + if (!strcmp(keys, keypress))
> + break;
> + }
> + }
> + if (*suffix) {
> + char cmd_name[sizeof(kbd_command_prefix) + 1];
> + char *cmd;
> + sprintf(cmd_name, "%s%c", kbd_command_prefix, *suffix);
> + cmd = getenv(cmd_name);
> + if (cmd) {
> + setenv("preboot", cmd);
> + return;
> + }
> + }
> + }
> +}
> +#endif
> +
> +int misc_init_r(void)
> +{
> +#ifdef CONFIG_PREBOOT
> + preboot_keys();
> +#endif
> +}
mx6qsabrelite.c: In function 'misc_init_r':
mx6qsabrelite.c:446: warning: control reaches end of non-void function
Best regards
Dirk
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