diff options
| -rw-r--r-- | src/mainboard/siemens/mc_ehl/mainboard.c | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/src/mainboard/siemens/mc_ehl/mainboard.c b/src/mainboard/siemens/mc_ehl/mainboard.c index fc7d31f29d..4cc5490f2a 100644 --- a/src/mainboard/siemens/mc_ehl/mainboard.c +++ b/src/mainboard/siemens/mc_ehl/mainboard.c @@ -1,12 +1,15 @@ /* SPDX-License-Identifier: GPL-2.0-only */ #include <baseboard/variants.h> +#include <bootstate.h> #include <console/console.h> #include <device/device.h> #include <hwilib.h> #include <i210.h> #include <soc/gpio.h> #include <string.h> +#include <timer.h> +#include <timestamp.h> #define MAX_PATH_DEPTH 12 #define MAX_NUM_MAPPINGS 10 @@ -83,6 +86,31 @@ enum cb_err mainboard_get_mac_address(struct device *dev, uint8_t mac[MAC_ADDR_L return CB_ERR; } +static void wait_for_legacy_dev(void *unused) +{ + uint32_t legacy_delay, us_since_boot; + struct stopwatch sw; + + /* Open main hwinfo block. */ + if (hwilib_find_blocks("hwinfo.hex") != CB_SUCCESS) + return; + + /* Get legacy delay parameter from hwinfo. */ + if (hwilib_get_field(LegacyDelay, (uint8_t *) &legacy_delay, + sizeof(legacy_delay)) != sizeof(legacy_delay)) + return; + + us_since_boot = get_us_since_boot(); + /* No need to wait if the time since boot is already long enough.*/ + if (us_since_boot > legacy_delay) + return; + stopwatch_init_msecs_expire(&sw, (legacy_delay - us_since_boot) / 1000); + printk(BIOS_NOTICE, "Wait remaining %d of %d us for legacy devices...", + legacy_delay - us_since_boot, legacy_delay); + stopwatch_wait_until_expired(&sw); + printk(BIOS_NOTICE, "done!\n"); +} + static void mainboard_init(void *chip_info) { const struct pad_config *pads; @@ -95,3 +123,5 @@ static void mainboard_init(void *chip_info) struct chip_operations mainboard_ops = { .init = mainboard_init, }; + +BOOT_STATE_INIT_ENTRY(BS_DEV_ENUMERATE, BS_ON_ENTRY, wait_for_legacy_dev, NULL); |