[coreboot-gerrit] Patch set updated for coreboot: 3f510b8 libpayload (EHCI): correctly align PORTSC

Stefan Reinauer (stefan.reinauer@coreboot.org) gerrit at coreboot.org
Wed Nov 20 01:51:32 CET 2013

Stefan Reinauer (stefan.reinauer at coreboot.org) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/4174


commit 3f510b8e27b08b2d584d7f6dd85671f64cb75b66
Author: Stefan Reinauer <reinauer at chromium.org>
Date:   Fri May 17 11:56:09 2013 -0700

    libpayload (EHCI): correctly align PORTSC
    Two structures in the USB EHCI stack were pointing
    to hardware but not marked attribute((packed)) hence
    leaving it to GCC to correctly align the data structures.
    Next, the number of reserved bytes in hc_op_t was wrong
    (but implicitly aligned to the correct values on x86)
    It seems this worked fine on x86, but on ARM it was doing
    the wrong thing.
    Signed-off-by: Stefan Reinauer <reinauer at google.com>
    Change-Id: I94bed4850ded7d3f7bbc7ff3079c103c6054c22d
    Reviewed-on: https://gerrit.chromium.org/gerrit/55555
    Commit-Queue: Stefan Reinauer <reinauer at google.com>
    Reviewed-by: Stefan Reinauer <reinauer at google.com>
    Tested-by: Stefan Reinauer <reinauer at google.com>
 payloads/libpayload/drivers/usb/ehci_private.h | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/payloads/libpayload/drivers/usb/ehci_private.h b/payloads/libpayload/drivers/usb/ehci_private.h
index 3b9faf6..3365be1 100644
--- a/payloads/libpayload/drivers/usb/ehci_private.h
+++ b/payloads/libpayload/drivers/usb/ehci_private.h
@@ -78,10 +78,10 @@ typedef volatile struct {
 	u32 ctrldssegment;
 	u32 periodiclistbase;
 	u32 asynclistaddr;
-	u8 res1[0x3f-0x1c];
+	u8 res1[0x40-0x1c];
 	u32 configflag;
 	portsc_t portsc[0];
-} hc_op_t;
+} __attribute__ ((packed)) hc_op_t;
 typedef volatile struct {
 #define QTD_TERMINATE 1
@@ -130,7 +130,7 @@ typedef volatile struct {
 	volatile u32 current_td_ptr;
 	volatile qtd_t td;
-} ehci_qh_t;
+} __attribute__ ((packed)) ehci_qh_t;
 typedef struct ehci {
 	hc_cap_t *capabilities;

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