From c0d1e31617f7aa3a93e394dbd5fe5997a914cb25 Mon Sep 17 00:00:00 2001 From: Werner Zeh Date: Tue, 10 Oct 2017 12:35:10 +0200 Subject: [PATCH] siemens/mc_bdx1: Add delay to wait for legacy devices Like happend in commit efd0eb35af5e5620331d885d3140c734a6fc9098 (siemens/mc_apl1: Add delay to wait for legacy devices) add the feature to mc_bdx1 as it uses the same legacy devices. Change-Id: I355a53ce7aea70098d7bc08f24dc6a4e43d1d618 Signed-off-by: Werner Zeh Reviewed-on: https://review.coreboot.org/21933 Tested-by: build bot (Jenkins) Reviewed-by: Mario Scheithauer --- src/mainboard/siemens/mc_bdx1/mainboard.c | 30 +++++++++++++++++++++++ 1 file changed, 30 insertions(+) diff --git a/src/mainboard/siemens/mc_bdx1/mainboard.c b/src/mainboard/siemens/mc_bdx1/mainboard.c index d4d84b5599..ea525d4a6c 100644 --- a/src/mainboard/siemens/mc_bdx1/mainboard.c +++ b/src/mainboard/siemens/mc_bdx1/mainboard.c @@ -35,6 +35,9 @@ #include #include #include +#include +#include +#include #define MAX_PATH_DEPTH 12 #define MAX_NUM_MAPPINGS 10 @@ -214,6 +217,33 @@ enum cb_err mainboard_get_mac_address(struct device *dev, uint8_t mac[6]) 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"); +} + +BOOT_STATE_INIT_ENTRY(BS_DEV_ENUMERATE, BS_ON_ENTRY, wait_for_legacy_dev, NULL); + struct chip_operations mainboard_ops = { .enable_dev = mainboard_enable, .init = mainboard_init,