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GTA01: use POWER button to append debug parameters to the kernel command line

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This patch is based on the one tested on GTA02, it compiles but i could not
verify if it works.
This commit is contained in:
Paul Fertser 2009-01-19 01:37:09 +00:00 committed by Andy Green
parent 7c8892dfa1
commit bdaef4fd50
1 changed files with 16 additions and 12 deletions
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28
qiboot/src/cpu/s3c2410/gta01.c
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@ -209,31 +209,34 @@ static void close_gta01(void)
(bb_s3c24xx.close)(); (bb_s3c24xx.close)();
} }
static u8 get_ui_keys_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_gta01(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 GTA01, map to UI_ACTION_ADD_DEBUG, down = 1 */ /* GPF6 is AUX on GTA01, map to UI_ACTION_SKIPKERNEL, down = 0 */
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_gta01(void)
{
/* PWR button state can be seen in OOCS b0, down = 0, map to UI_ACTION_ADD_DEBUG */
return !(i2c_read_sync(&bb_s3c24xx, PCF50606_I2C_ADS, PCF50606_REG_OOCS) & 1);
}
/* /*
* API for bootloader on this machine * API for bootloader on this machine
@ -250,7 +253,8 @@ const struct board_api board_api_gta01 = {
.port_init = port_init_gta01, .port_init = port_init_gta01,
.putc = putc_gta01, .putc = putc_gta01,
.close = close_gta01, .close = close_gta01,
.get_ui_keys = get_ui_keys_gta02, .get_ui_keys = get_ui_keys_gta01,
.get_ui_debug = get_ui_debug_gta01,
.commandline_board = "mtdparts=" \ .commandline_board = "mtdparts=" \
"neo1973-nand:" \ "neo1973-nand:" \