1 files changed, 0 insertions, 293 deletions
diff --git a/board/zinger/runtime.c b/board/zinger/runtime.c
deleted file mode 100644
index 5d17bfda04..0000000000
--- a/board/zinger/runtime.c
+++ /dev/null
@@ -1,293 +0,0 @@
-/* Copyright 2014 The Chromium OS Authors. All rights reserved.
- * Use of this source code is governed by a BSD-style license that can be
- * found in the LICENSE file.
- */
-/* tiny substitute of the runtime layer */
-
-#include "chip/stm32/clock-f.h"
-#include "clock.h"
-#include "common.h"
-#include "cpu.h"
-#include "debug_printf.h"
-#include "registers.h"
-#include "system.h"
-#include "task.h"
-#include "timer.h"
-#include "util.h"
-
-volatile uint32_t last_event;
-uint32_t sleep_mask;
-
-/* High word of the 64-bit timestamp counter  */
-static volatile uint32_t clksrc_high;
-
-timestamp_t get_time(void)
-{
-	timestamp_t t;
-
-	t.le.lo = STM32_TIM32_CNT(2);
-	t.le.hi = clksrc_high;
-	return t;
-}
-
-void force_time(timestamp_t ts)
-{
-	STM32_TIM32_CNT(2) = ts.le.lo;
-}
-
-void udelay(unsigned us)
-{
-	unsigned t0 = STM32_TIM32_CNT(2);
-	while ((STM32_TIM32_CNT(2) - t0) < us)
-		;
-}
-
-void task_enable_irq(int irq)
-{
-	CPU_NVIC_EN(0) = 1 << irq;
-}
-
-void task_disable_irq(int irq)
-{
-	CPU_NVIC_DIS(0) = 1 << irq;
-}
-
-void task_clear_pending_irq(int irq)
-{
-	CPU_NVIC_UNPEND(0) = 1 << irq;
-}
-
-void interrupt_disable(void)
-{
-	asm("cpsid i");
-}
-
-void interrupt_enable(void)
-{
-	asm("cpsie i");
-}
-
-uint32_t task_set_event(task_id_t tskid, uint32_t event)
-{
-	last_event = event;
-
-	return 0;
-}
-
-void tim2_interrupt(void)
-{
-	uint32_t stat = STM32_TIM_SR(2);
-
-	if (stat & 2) { /* Event match */
-		/* disable match interrupt but keep update interrupt */
-		STM32_TIM_DIER(2) = 1;
-		last_event = TASK_EVENT_TIMER;
-	}
-	if (stat & 1) /* Counter overflow */
-		clksrc_high++;
-
-	STM32_TIM_SR(2) = ~stat & 3; /* clear interrupt flags */
-	task_clear_pending_irq(STM32_IRQ_TIM2);
-}
-DECLARE_IRQ(STM32_IRQ_TIM2, tim2_interrupt, 1);
-
-static void zinger_config_hispeed_clock(void)
-{
-	/* Ensure that HSI8 is ON */
-	if (!(STM32_RCC_CR & BIT(1))) {
-		/* Enable HSI */
-		STM32_RCC_CR |= BIT(0);
-		/* Wait for HSI to be ready */
-		while (!(STM32_RCC_CR & BIT(1)))
-			;
-	}
-	/* PLLSRC = HSI, PLLMUL = x12 (x HSI/2) = 48Mhz */
-	STM32_RCC_CFGR = 0x00288000;
-	/* Enable PLL */
-	STM32_RCC_CR |= BIT(24);
-	/* Wait for PLL to be ready */
-	while (!(STM32_RCC_CR & BIT(25)))
-			;
-
-	/* switch SYSCLK to PLL */
-	STM32_RCC_CFGR = 0x00288002;
-	/* wait until the PLL is the clock source */
-	while ((STM32_RCC_CFGR & 0xc) != 0x8)
-		;
-}
-
-void runtime_init(void)
-{
-	/*
-	 * put 1 Wait-State for flash access to ensure proper reads at 48Mhz
-	 * and enable prefetch buffer.
-	 */
-	STM32_FLASH_ACR = STM32_FLASH_ACR_LATENCY | STM32_FLASH_ACR_PRFTEN;
-
-	config_hispeed_clock();
-
-	rtc_init();
-}
-
-/*
- * minimum delay to enter stop mode
- * STOP_MODE_LATENCY: max time to wake up from STOP mode with regulator in low
- * power mode is 5 us + PLL locking time is 200us.
- * SET_RTC_MATCH_DELAY: max time to set RTC match alarm. if we set the alarm
- * in the past, it will never wake up and cause a watchdog.
- */
-#define STOP_MODE_LATENCY 300   /* us */
-#define SET_RTC_MATCH_DELAY 200 /* us */
-#define MAX_LATENCY (STOP_MODE_LATENCY + SET_RTC_MATCH_DELAY)
-
-uint32_t task_wait_event(int timeout_us)
-{
-	uint32_t evt;
-	timestamp_t t0, t1;
-	struct rtc_time_reg rtc0, rtc1;
-
-	t1.val = get_time().val + timeout_us;
-
-	asm volatile("cpsid i");
-	/* the event already happened */
-	if (last_event || !timeout_us) {
-		evt = last_event;
-		last_event = 0;
-
-		asm volatile("cpsie i ; isb");
-		return evt;
-	}
-
-	/* loop until an event is triggered */
-	while (1) {
-		/* set timeout on timer */
-		if (timeout_us < 0) {
-			asm volatile ("wfi");
-		} else if (timeout_us <= MAX_LATENCY ||
-			  t1.le.lo - timeout_us > t1.le.lo + MAX_LATENCY ||
-			  !DEEP_SLEEP_ALLOWED) {
-			STM32_TIM32_CCR1(2) = STM32_TIM32_CNT(2) + timeout_us;
-			STM32_TIM_DIER(2) = 3; /*  match interrupt and UIE */
-
-			asm volatile("wfi");
-
-			STM32_TIM_DIER(2) = 1; /* disable match, keep UIE */
-		} else {
-			t0 = get_time();
-
-			/* set deep sleep bit */
-			CPU_SCB_SYSCTRL |= 0x4;
-
-			set_rtc_alarm(0, timeout_us - STOP_MODE_LATENCY,
-				      &rtc0, 0);
-
-			asm volatile("wfi");
-
-			CPU_SCB_SYSCTRL &= ~0x4;
-
-			zinger_config_hispeed_clock();
-
-			/* fast forward timer according to RTC counter */
-			reset_rtc_alarm(&rtc1);
-			t0.val += get_rtc_diff(&rtc0, &rtc1);
-			force_time(t0);
-		}
-
-		asm volatile("cpsie i ; isb");
-		/* note: interrupt that woke us up will run here */
-		asm volatile("cpsid i");
-
-		t0 = get_time();
-		/* check for timeout if timeout was set */
-		if (timeout_us >= 0 && t0.val >= t1.val)
-			last_event = TASK_EVENT_TIMER;
-		/* break from loop when event has triggered */
-		if (last_event)
-			break;
-		/* recalculate timeout if timeout was set */
-		if (timeout_us >= 0)
-			timeout_us = t1.val - t0.val;
-	}
-
-	evt = last_event;
-	last_event = 0;
-	asm volatile("cpsie i ; isb");
-	return evt;
-}
-
-uint32_t task_wait_event_mask(uint32_t event_mask, int timeout_us)
-{
-	uint32_t evt = 0;
-
-	/* Add the timer event to the mask so we can indicate a timeout */
-	event_mask |= TASK_EVENT_TIMER;
-
-	/* Wait until an event matching event_mask */
-	do {
-		evt |= task_wait_event(timeout_us);
-	} while (!(evt & event_mask));
-
-	/* Restore any pending events not in the event_mask */
-	if (evt & ~event_mask)
-		task_set_event(0, evt & ~event_mask);
-
-	return evt & event_mask;
-}
-
-noreturn
-void __keep cpu_reset(void)
-{
-	/* Disable interrupts */
-	asm volatile("cpsid i");
-	/* reboot the CPU */
-	CPU_NVIC_APINT = 0x05fa0004;
-	/* Spin and wait for reboot; should never return */
-	while (1)
-		;
-}
-
-void system_reset(int flags)
-{
-	cpu_reset();
-}
-/**
- * Default exception handler, which reports a panic.
- *
- * Declare this as a naked call so we can extract the real LR and SP.
- */
-void exception_panic(void) __attribute__((naked));
-void exception_panic(void)
-{
-#ifdef CONFIG_DEBUG_PRINTF
-	asm volatile(
-		"mov r0, %0\n"
-		/* TODO: Should this be SP_process instead of SP_main? */
-		"mov r3, sp\n"
-		"ldr r1, [r3, #6*4]\n" /* retrieve exception PC */
-		"ldr r2, [r3, #5*4]\n" /* retrieve exception LR */
-		"bl debug_printf\n"
-	: : "r"("PANIC PC=%08x LR=%08x\n\n"));
-#endif
-	cpu_reset();
-}
-
-void panic_reboot(void)
-{ /* for div / 0 */
-	debug_printf("DIV0 PANIC\n\n");
-	cpu_reset();
-}
-
-enum ec_image system_get_image_copy(void)
-{
-	if (is_ro_mode())
-		return EC_IMAGE_RO;
-	else
-		return EC_IMAGE_RW;
-}
-
-/* --- stubs --- */
-void __hw_timer_enable_clock(int n, int enable)
-{ /* Done in hardware init */ }
-
-void usleep(unsigned us)
-{ /* Used only as a workaround */ }