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storm: supply vboot GPIO settings in coreboot table

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Storm provides three real and two fake gpios. To keep things simple,
define them all as active low and provide appropriate values for the
fake ones.

BUG=chrome-os-partner:30705
TEST=with the appropriate depthcharge change booted proto0, observed
     appropriate behavior following the dev switch setting

Change-Id: Icb7fb55949fa97ead9d19f0da76392ee63bbb5b8
Signed-off-by: Vadim Bendebury <vbendeb@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/210922
This commit is contained in:
Vadim Bendebury 2014-08-01 17:36:45 -07:00 • committed by chrome-internal-fetch
commit d48d1dcc88
2 changed files with 53 additions and 0 deletions
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1
src/mainboard/google/storm/Kconfig
View file

@ -22,6 +22,7 @@ if BOARD_GOOGLE_STORM
config BOARD_SPECIFIC_OPTIONS
def_bool y
select BOARD_ID_SUPPORT
select CHROMEOS
select COMMON_CBFS_SPI_WRAPPER
select MAINBOARD_HAS_BOOTBLOCK_INIT
select SOC_QC_IPQ806X

52
src/mainboard/google/storm/mainboard.c
View file

@ -19,7 +19,11 @@
#include <arch/cache.h>
#include <boot/coreboot_tables.h>
#include <console/console.h>
#include <device/device.h>
#include <delay.h>
#include <string.h>
#include <soc/qualcomm/ipq806x/include/clock.h>
#include <soc/qualcomm/ipq806x/include/gpio.h>
#include <soc/qualcomm/ipq806x/include/usb.h>
@ -93,3 +97,51 @@ void lb_board(struct lb_header *header)
dma->range_start = CONFIG_DRAM_DMA_START;
dma->range_size = CONFIG_DRAM_DMA_SIZE;
}
#define FAKE_GPIO_NUM -1
struct gpio_desc {
gpio_t gpio_num;
const char *gpio_name;
uint32_t fake_value;
};
static const struct gpio_desc descriptors[] = {
{ 15, "developer" },
{ 16, "recovery" },
{ 17, "write protect" },
{ FAKE_GPIO_NUM, "power", 1 }, /* Power never pressed. */
{ FAKE_GPIO_NUM, "lid", 0 } /* Lid always open. */
};
static void fill_lb_gpio(struct lb_gpio *pgpio, const struct gpio_desc *pdesc)
{
gpio_t gpio_num = pdesc->gpio_num;
pgpio->port = gpio_num;
if (gpio_num == FAKE_GPIO_NUM) {
pgpio->value = pdesc->fake_value;
} else {
gpio_tlmm_config_set(gpio_num, GPIO_FUNC_DISABLE,
GPIO_NO_PULL, GPIO_2MA, GPIO_DISABLE);
udelay(10); /* Should be enough to settle. */
pgpio->value = gpio_get_in_value(gpio_num);
}
pgpio->polarity = ACTIVE_LOW;
strncpy((char *)pgpio->name, pdesc->gpio_name, sizeof(pgpio->name));
printk(BIOS_INFO, "%s: %s: port %d value %d\n",
__func__, pgpio->name, pgpio->port, pgpio->value);
}
void fill_lb_gpios(struct lb_gpios *gpios)
{
int i;
for (i = 0; i < ARRAY_SIZE(descriptors); i++)
fill_lb_gpio(gpios->gpios + i, descriptors + i);
gpios->size = sizeof(*gpios) + sizeof(struct lb_gpio) * i;
gpios->count = i;
}