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BeagleBoard: Added userbutton command

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Based on commit f1099c7c43caf5bac3bf6a65aa266fade4747072
    Author: Greg Turner <gregturner@ti.com>
    Date:   Tue May 25 09:19:06 2010 -0500

    New u-boot command for status of USER button on BeagleBoard-xM

         Modified bootcmd to check the staus at boot time and set
	 filename of the boot script.

* Moved to a BeagleBoard specific file.
* Removed changes to default boot command from adding userbutton
  command.
* Made to handle pre-xM boards.
* Flipped polarity of the return value to avoid confusion.  Success (0)
  is when the button is pressed.  Failure (1) is when the button is NOT
  pressed.
* Used latest revision getting function.
* Used latest macros for board revision.
* Added xM-C revision definition (optional, since it was default)
* updated default configuration with UserButton functionality
  * Added a separate bootenv variable to load a user defined .txt file
  * Added an example, showing how a different environment file can be loaded with
    the user button pressed

Signed-off-by: Jason Kridner <jkridner@beagleboard.org>
Signed-off-by: Koen Kooi <koen@dominion.thruhere.net>
Signed-off-by: Joel A Fernandes <agnel.joel@gmail.com>
Cc: Greg Turner <gregturner@ti.com>
Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com>
This commit is contained in:
Jason Kridner 2010-07-21 07:41:25 -05:00 committed by Albert ARIBAUD
parent f44047df3b
commit f835ea7158
2 changed files with 62 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

56
board/ti/beagle/beagle.c
View File

@ -50,6 +50,7 @@ extern struct ehci_hccr *hccr;
extern volatile struct ehci_hcor *hcor;
#endif
#include "beagle.h"
#include <command.h>
#define pr_debug(fmt, args...) debug(fmt, ##args)
@ -446,3 +447,58 @@ int ehci_hcd_init(void)
}
#endif /* CONFIG_USB_EHCI */
/*
* This command returns the status of the user button on beagle xM
* Input - none
* Returns - 1 if button is held down
* 0 if button is not held down
*/
int do_userbutton (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
{
int button = 0;
int gpio;
/*
* pass address parameter as argv[0] (aka command name),
* and all remaining args
*/
switch (get_board_revision()) {
case REVISION_AXBX:
case REVISION_CX:
case REVISION_C4:
gpio = 7;
break;
case REVISION_XM_A:
case REVISION_XM_B:
case REVISION_XM_C:
default:
gpio = 4;
break;
}
omap_request_gpio(gpio);
omap_set_gpio_direction(gpio, 1);
printf("The user button is currently ");
if(omap_get_gpio_datain(gpio))
{
button = 1;
printf("PRESSED.\n");
}
else
{
button = 0;
printf("NOT pressed.\n");
}
omap_free_gpio(gpio);
return !button;
}
/* -------------------------------------------------------------------- */
U_BOOT_CMD(
userbutton, CONFIG_SYS_MAXARGS, 1, do_userbutton,
"Return the status of the BeagleBoard USER button",
""
);

7
include/configs/omap3_beagle.h
View File

@ -226,7 +226,8 @@
"omapdss.def_disp=${defaultdisplay} " \
"root=${nandroot} " \
"rootfstype=${nandrootfstype}\0" \
"loadbootenv=fatload mmc ${mmcdev} ${loadaddr} uEnv.txt\0" \
"bootenv=uEnv.txt\0" \
"loadbootenv=fatload mmc ${mmcdev} ${loadaddr} ${bootenv}\0" \
"importbootenv=echo Importing environment from mmc ...; " \
"env import -t $loadaddr $filesize\0" \
"loaduimage=fatload mmc ${mmcdev} ${loadaddr} uImage\0" \
@ -240,8 +241,12 @@
#define CONFIG_BOOTCOMMAND \
"if mmc rescan ${mmcdev}; then " \
"if userbutton; then " \
"setenv bootenv user.txt;" \
"fi;" \
"echo SD/MMC found on device ${mmcdev};" \
"if run loadbootenv; then " \
"echo Loaded environment from ${bootenv};" \
"run importbootenv;" \
"fi;" \
"if test -n $uenvcmd; then " \