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USBDEBUG: buffer up to 8 bytes

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EHCI debug allows to send message with 8 bytes length, but
we're only sending one byte in each transaction. Buffer up
to 8 bytes to speed up debug output.

Change-Id: I9dbb406833c4966c3afbd610e1b13a8fa3d62f39
Signed-off-by: Sven Schnelle <svens@stackframe.org>
Reviewed-on: http://review.coreboot.org/1357
Tested-by: build bot (Jenkins)
Reviewed-by: Nico Huber <nico.huber@secunet.com>
This commit is contained in:
Sven Schnelle
2012-07-26 14:31:40 +02:00
committed by Patrick Georgi
parent 0b7b7b6334
commit 82704c63b9
5 changed files with 45 additions and 14 deletions
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5
src/include/usbdebug.h
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@@ -30,6 +30,8 @@ struct ehci_debug_info {
u32 devnum;
u32 endpoint_out;
u32 endpoint_in;
char buf[8];
u8 bufidx;
};
#ifndef __ROMCC__
@@ -41,7 +43,8 @@ void set_ehci_debug(unsigned ehci_debug);
unsigned get_ehci_debug(void);
void set_debug_port(unsigned port);
int early_usbdebug_init(void);
void usbdebug_tx_byte(unsigned char data);
void usbdebug_tx_byte(struct ehci_debug_info *info, unsigned char data);
void usbdebug_tx_flush(struct ehci_debug_info *info);
int usbdebug_init(unsigned ehci_bar, unsigned offset, struct ehci_debug_info *info);
#endif
#endif