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-rw-r--r--board/ti/beagle/beagle.c56
-rw-r--r--include/configs/omap3_beagle.h7
2 files changed, 62 insertions, 1 deletions
diff --git a/board/ti/beagle/beagle.c b/board/ti/beagle/beagle.c
index a958545..8dc8dfa 100644
--- a/board/ti/beagle/beagle.c
+++ b/board/ti/beagle/beagle.c
@@ -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",
+ ""
+);
diff --git a/include/configs/omap3_beagle.h b/include/configs/omap3_beagle.h
index c67dae2..c879364 100644
--- a/include/configs/omap3_beagle.h
+++ b/include/configs/omap3_beagle.h
@@ -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 " \