From 618d179bfefba32e1672a58f2ee9b969cb313130 Mon Sep 17 00:00:00 2001 From: Kyösti Mälkki Date: Mon, 27 Oct 2014 08:01:55 +0200 Subject: usbdebug: Fix migration to ramstage MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit On entry to ramstage CBMEM is looked for a copy of an already initialized EHCI debug dongle state. If a copy is found, it contained the state before CAR migration and the USB protocol data toggle can be out of sync. It's an even/odd kind of a parity check, so roughly every other build would show the problem as invalid first line: 'ug found in CBMEM.' After CAR migration, re-direct the state changes to correct CBMEM table. Change-Id: I7c54e76ce29af5c8ee5e9ce6fd3dc6bdf700dcf1 Signed-off-by: Kyösti Mälkki Reviewed-on: http://review.coreboot.org/7206 Reviewed-by: Edward O'Callaghan Tested-by: build bot (Jenkins) --- src/drivers/usb/ehci_debug.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) (limited to 'src/drivers') diff --git a/src/drivers/usb/ehci_debug.c b/src/drivers/usb/ehci_debug.c index c60fbaaaad..5a62999dc3 100644 --- a/src/drivers/usb/ehci_debug.c +++ b/src/drivers/usb/ehci_debug.c @@ -96,10 +96,14 @@ static int dbgp_enabled(void); #define DBGP_MAX_PACKET 8 static struct ehci_debug_info glob_dbg_info CAR_GLOBAL; +static struct ehci_debug_info * glob_dbg_info_p CAR_GLOBAL; static inline struct ehci_debug_info *dbgp_ehci_info(void) { - return car_get_var_ptr(&glob_dbg_info); + if (car_get_var(glob_dbg_info_p) == NULL) + car_set_var(glob_dbg_info_p, &glob_dbg_info); + + return car_get_var(glob_dbg_info_p); } static int dbgp_wait_until_complete(struct ehci_dbg_port *ehci_debug) @@ -905,6 +909,7 @@ static void migrate_ehci_debug(void) return; memcpy(dbg_info_cbmem, dbg_info, sizeof(*dbg_info)); + car_set_var(glob_dbg_info_p, dbg_info_cbmem); } CAR_MIGRATE(migrate_ehci_debug); #endif -- cgit v1.2.3