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-rw-r--r--src/mainboard/siemens/mc_apl1/mainboard.c31
1 files changed, 31 insertions, 0 deletions
diff --git a/src/mainboard/siemens/mc_apl1/mainboard.c b/src/mainboard/siemens/mc_apl1/mainboard.c
index d8374fc2a4..fb849f9872 100644
--- a/src/mainboard/siemens/mc_apl1/mainboard.c
+++ b/src/mainboard/siemens/mc_apl1/mainboard.c
@@ -23,6 +23,9 @@
#include <intelblocks/lpc_lib.h>
#include <soc/pci_devs.h>
#include <string.h>
+#include <bootstate.h>
+#include <timer.h>
+#include <timestamp.h>
#include "brd_gpio.h"
#include "ptn3460.h"
@@ -141,6 +144,34 @@ static void mainboard_final(void *chip_info)
}
}
+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);
+ while (!stopwatch_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 = {
.init = mainboard_init,
.final = mainboard_final,