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authorAaron Durbin <adurbin@chromium.org>2014-09-25 10:05:15 -0500
committerPatrick Georgi <pgeorgi@google.com>2015-04-08 18:35:01 +0200
commite5e36306a9a5bf96ab8cc990d93bbd62030e635f (patch)
tree9ecc2fb162f97fa1e918f0830f2a49b183340280 /src/soc/rockchip
parent23b4e4c4e80c0acd17c088c6bdde8c3bfccce898 (diff)
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timer: Add generic udelay() implementation
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>
Diffstat (limited to 'src/soc/rockchip')
-rw-r--r--src/soc/rockchip/rk3288/Kconfig1
-rw-r--r--src/soc/rockchip/rk3288/timer.c27
2 files changed, 1 insertions, 27 deletions
diff --git a/src/soc/rockchip/rk3288/Kconfig b/src/soc/rockchip/rk3288/Kconfig
index 0865fe8f5..70951a5fa 100644
--- a/src/soc/rockchip/rk3288/Kconfig
+++ b/src/soc/rockchip/rk3288/Kconfig
@@ -26,6 +26,7 @@ config SOC_ROCKCHIP_RK3288
select ARCH_RAMSTAGE_ARMV7
select CPU_HAS_BOOTBLOCK_INIT
select HAVE_MONOTONIC_TIMER
+ select GENERIC_UDELAY
select HAVE_UART_MEMORY_MAPPED
select HAVE_UART_SPECIAL
select BOOTBLOCK_CONSOLE
diff --git a/src/soc/rockchip/rk3288/timer.c b/src/soc/rockchip/rk3288/timer.c
index 716248240..658f4d74f 100644
--- a/src/soc/rockchip/rk3288/timer.c
+++ b/src/soc/rockchip/rk3288/timer.c
@@ -23,36 +23,9 @@
#include <soc/timer.h>
#include <timer.h>
-void init_timer(void)
-{
-}
-
void rk3288_init_timer(void)
{
write32(TIMER_LOAD_VAL, &timer7_ptr->timer_load_count0);
write32(TIMER_LOAD_VAL, &timer7_ptr->timer_load_count1);
write32(1, &timer7_ptr->timer_ctrl_reg);
}
-
-/* delay x useconds */
-void udelay(unsigned usec)
-{
- struct mono_time current, end;
-
- timer_monotonic_get(&current);
- end = current;
- mono_time_add_usecs(&end, usec);
-
- if (mono_time_after(&current, &end)) {
- printk(BIOS_EMERG, "udelay: 0x%08x is impossibly large\n",
- usec);
- /* There's not much we can do if usec is too big. Use a long,
- * paranoid delay value and hope for the best... */
- end = current;
- mono_time_add_usecs(&end, USECS_PER_SEC);
- }
-
- while (mono_time_before(&current, &end))
- timer_monotonic_get(&current);
-}
-