Allows for the conditional inclusion of EHCI UART driver on the x86 platform
rather than having it always enabled.
The default configuration for the HAS_EHCI option remains 'y' on x86, so the
behavior out of the box remains unchanged. The addition of the option allows
advanced users to enable/disable the inclusion of the EHCI UART driver.
Signed-off-by: Derek Straka <de...@asterius.io>
---
xen/arch/x86/Kconfig | 1 -
xen/drivers/char/Kconfig | 3 ++-
xen/include/xen/serial.h | 12 +++++++++++-
3 files changed, 13 insertions(+), 3 deletions(-)
diff --git a/xen/arch/x86/Kconfig b/xen/arch/x86/Kconfig
index 8a122df..2119c93 100644
--- a/xen/arch/x86/Kconfig
+++ b/xen/arch/x86/Kconfig
@@ -8,7 +8,6 @@ config X86
select COMPAT
select CORE_PARKING
select HAS_CPUFREQ
- select HAS_EHCI
select HAS_GDBSX
select HAS_IOPORTS
select HAS_KEXEC
diff --git a/xen/drivers/char/Kconfig b/xen/drivers/char/Kconfig
index c87e018..08a60e0 100644
--- a/xen/drivers/char/Kconfig
+++ b/xen/drivers/char/Kconfig
@@ -45,7 +45,8 @@ config HAS_SCIF
say Y.
config HAS_EHCI
- bool
+ bool "EHCI UART" if EXPERT = "y"
+ default y if X86
help
This selects the USB based EHCI debug port to be used as a UART. If
you have an x86 based system with USB, say Y.
diff --git a/xen/include/xen/serial.h b/xen/include/xen/serial.h
index 343779c..8f87897 100644
--- a/xen/include/xen/serial.h
+++ b/xen/include/xen/serial.h
@@ -174,11 +174,21 @@ void ns16550_init(int index, struct ns16550_defaults
*defaults);
static inline void ns16550_init(int index, struct ns16550_defaults *defaults)
{}
#endif
+#ifdef CONFIG_HAS_EHCI
void ehci_dbgp_init(void);
-void arm_uart_init(void);
+#else
+static inline void ehci_dbgp_init(void) {}
+#endif
+void arm_uart_init(void);
+
struct physdev_dbgp_op;
+
+#ifdef CONFIG_HAS_EHCI
int dbgp_op(const struct physdev_dbgp_op *);
+#else
+static inline int dbgp_op(const struct physdev_dbgp_op *op) { return 0; }
+#endif
/* Baud rate was pre-configured before invoking the UART driver. */
#define BAUD_AUTO (-1)
--
2.7.4
_______________________________________________
Xen-devel mailing list
Xen-devel@lists.xen.org
https://lists.xen.org/xen-devel
