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GTA02: use POWER button to append debug parameters to the kernel command line

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This commit is contained in:
Paul Fertser 2009-01-19 01:37:09 +00:00 committed by Andy Green
parent 6940235ae6
commit 7c8892dfa1
1 changed files with 15 additions and 10 deletions
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25
qiboot/src/cpu/s3c2442/gta02.c
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@ -378,31 +378,35 @@ static void close_gta02(void)
} }
/* Here we will care only about AUX button as polling for PWR button
* through i2c slows down the boot */
static u8 get_ui_keys_gta02(void) static u8 get_ui_keys_gta02(void)
{ {
u8 keys; u8 keys;
u8 ret; u8 ret = 0;
static u8 old_keys = 0; /* previous state for debounce */ static u8 old_keys = 0; /* previous state for debounce */
static u8 old_ret = 0; /* previous debounced output for edge detect */ static u8 older_keys = 0; /* previous debounced output for edge detect */
/* GPF6 is AUX on GTA02, map to UI_ACTION_ADD_DEBUG, down = 1 */ /* GPF6 is AUX on GTA02, map to UI_ACTION_SKIPKERNEL, down = 1 */
keys = !!(rGPFDAT & (1 << 6)); keys = !!(rGPFDAT & (1 << 6));
if (keys == old_keys)
ret = keys;
else
ret = old_keys;
/* edge action */ /* edge action */
if ((ret & 1) && !(old_ret & 1)) if ((old_keys & 1) && !(older_keys & 1))
ret |= UI_ACTION_SKIPKERNEL; ret |= UI_ACTION_SKIPKERNEL;
older_keys = old_keys;
old_keys = keys; old_keys = keys;
old_ret = ret;
return ret; return ret;
} }
static u8 get_ui_debug_gta02(void)
{
/* PWR button state can be seen in OOCSTAT b0, down = 0, map to UI_ACTION_ADD_DEBUG */
return !(i2c_read_sync(&bb_s3c24xx, PCF50633_I2C_ADS, PCF50633_REG_OOCSTAT) & 1);
}
static void set_ui_indication_gta02(enum ui_indication ui_indication) static void set_ui_indication_gta02(enum ui_indication ui_indication)
{ {
@ -456,6 +460,7 @@ const struct board_api board_api_gta02 = {
.putc = putc_gta02, .putc = putc_gta02,
.close = close_gta02, .close = close_gta02,
.get_ui_keys = get_ui_keys_gta02, .get_ui_keys = get_ui_keys_gta02,
.get_ui_debug = get_ui_debug_gta02,
.set_ui_indication = set_ui_indication_gta02, .set_ui_indication = set_ui_indication_gta02,
.commandline_board = "mtdparts=physmap-flash:-(nor);" \ .commandline_board = "mtdparts=physmap-flash:-(nor);" \
"neo1973-nand:" \ "neo1973-nand:" \