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| author | Nico Huber <nico.huber@secunet.com> | 2017-07-25 12:18:49 +0200 |
|---|---|---|
| committer | Nico Huber <nico.h@gmx.de> | 2017-07-27 13:56:53 +0000 |
| commit | 1a4add9e873fb312c21c57ac3208cd758f16033c (patch) | |
| tree | dcb5c4153ce7e8cdc368a452d48c163e1b93597e | |
| parent | a67dd9de7708563df5b7f019b3c32ac005d5db2e (diff) | |
| download | coreboot-1a4add9e873fb312c21c57ac3208cd758f16033c.tar.xz | |
libpayload/storage: Replace 1s AHCI reset delay with a timeout
AHCI spec explicitly states that we may poll.
TEST=Ran FILO on kontron/bsl6 and observed that the controller
always becomes ready during the first delay.
Change-Id: If34694abff14d719d10d89bc6771dbfa12065071
Signed-off-by: Nico Huber <nico.huber@secunet.com>
Reviewed-on: https://review.coreboot.org/20764
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
| -rw-r--r-- | payloads/libpayload/drivers/storage/ahci.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/payloads/libpayload/drivers/storage/ahci.c b/payloads/libpayload/drivers/storage/ahci.c index 3a0b99df42..f3882830d2 100644 --- a/payloads/libpayload/drivers/storage/ahci.c +++ b/payloads/libpayload/drivers/storage/ahci.c @@ -258,7 +258,9 @@ static void ahci_init_pci(pcidev_t dev) /* Reset host controller. */ ctrl->global_ctrl |= HBA_CTRL_RESET; /* Reset has to be finished after 1s. */ - delay(1); + int timeout = 10 * 1000; /* Time out after 10,000 * 100us == 1s. */ + while (ctrl->global_ctrl & HBA_CTRL_RESET && timeout--) + udelay(100); if (ctrl->global_ctrl & HBA_CTRL_RESET) { printf("ahci: ERROR: " "Controller reset didn't finish within 1s.\n"); |