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timer: Add generic udelay() implementation

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Add GENERIC_UDELAY Kconfig option so that a generic
udelay() implementation is provided utilizing the
monotonic timer. That way each board/chipset doesn't
need to duplicate the same udelay(). Additionally,
assume that GENERIC_UDELAY implies init_timer()
is not required.

BUG=None
BRANCH=None
TEST=Built nyan, ryu, and rambi. May need help testing.

Change-Id: I7f511a2324b5aa5d1b2959f4519be85a6a7360e8
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Original-Commit-Id: 1a85fbcad778933d13eaef545135abe7e4de46ed
Original-Change-Id: Idd26de19eefc91ee3b0ceddfb1bc2152e19fd8ab
Original-Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Original-Reviewed-on: https://chromium-review.googlesource.com/219719
Original-Reviewed-by: Julius Werner <jwerner@chromium.org>
Original-Reviewed-by: Furquan Shaikh <furquan@chromium.org>
Reviewed-on: http://review.coreboot.org/9334
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
This commit is contained in:
Aaron Durbin
2014-09-25 10:05:15 -05:00
committed by Patrick Georgi
parent 23b4e4c4e8
commit e5e36306a9
19 changed files with 24 additions and 240 deletions
Download Patch File Download Diff File Expand all files Collapse all files

3
src/arch/mips/Makefile.inc
View File

@@ -38,7 +38,6 @@ bootblock-y += boot.c
bootblock-y += bootblock.S
bootblock-y += bootblock_simple.c
bootblock-y += stages.c
bootblock-y += timer.c
bootblock-y += ../../lib/memcpy.c
bootblock-y += ../../lib/memmove.c
bootblock-y += ../../lib/memset.c
@@ -64,7 +63,6 @@ ifeq ($(CONFIG_ARCH_ROMSTAGE_MIPS),y)
romstage-y += boot.c
romstage-$(CONFIG_EARLY_CONSOLE) += early_console.c
romstage-y += stages.c
romstage-y += timer.c
romstage-y += ../../lib/memcpy.c
romstage-y += ../../lib/memmove.c
romstage-y += ../../lib/memset.c
@@ -85,7 +83,6 @@ ramstage-y += ashldi3.c
ramstage-y += boot.c
ramstage-y += stages.c
ramstage-y += tables.c
ramstage-y += timer.c
ramstage-y += ../../lib/memcpy.c
ramstage-y += ../../lib/memmove.c
ramstage-y += ../../lib/memset.c

31
src/arch/mips/timer.c
View File

@@ -1,31 +0,0 @@
/*
* This file is part of the coreboot project.
*
* Copyright (C) 2014 Imagination Technologies
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <delay.h>
#include <timer.h>
void init_timer(void)
{
/* TODO */
}
void udelay(unsigned usec)
{
/* TODO */
}