From e5e36306a9a5bf96ab8cc990d93bbd62030e635f Mon Sep 17 00:00:00 2001 From: Aaron Durbin Date: Thu, 25 Sep 2014 10:05:15 -0500 Subject: 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 Original-Commit-Id: 1a85fbcad778933d13eaef545135abe7e4de46ed Original-Change-Id: Idd26de19eefc91ee3b0ceddfb1bc2152e19fd8ab Original-Signed-off-by: Aaron Durbin Original-Reviewed-on: https://chromium-review.googlesource.com/219719 Original-Reviewed-by: Julius Werner Original-Reviewed-by: Furquan Shaikh Reviewed-on: http://review.coreboot.org/9334 Tested-by: build bot (Jenkins) Reviewed-by: Patrick Georgi --- src/soc/rockchip/rk3288/Kconfig | 1 + src/soc/rockchip/rk3288/timer.c | 27 --------------------------- 2 files changed, 1 insertion(+), 27 deletions(-) (limited to 'src/soc/rockchip/rk3288') diff --git a/src/soc/rockchip/rk3288/Kconfig b/src/soc/rockchip/rk3288/Kconfig index 0865fe8f54..70951a5fa7 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 7162482406..658f4d74f4 100644 --- a/src/soc/rockchip/rk3288/timer.c +++ b/src/soc/rockchip/rk3288/timer.c @@ -23,36 +23,9 @@ #include #include -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(¤t); - end = current; - mono_time_add_usecs(&end, usec); - - if (mono_time_after(¤t, &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(¤t, &end)) - timer_monotonic_get(¤t); -} - -- cgit v1.2.3