Files
OpenCellular/core/cortex-m0/cpu.h
Alexandru M Stan 2d25b40b75 cortex-m0: NVIC: Fix macro for the priority registers
We actually need to care about x, the PRI register is actually a list of
registers (and we have code that uses some of the later ones).

BUG=None, discovered while chrome-os-partner:33451
TEST=Change priorities of irqs(like UART over GPIO(spi_event)), note how they
actually work and override each other as told
BRANCH=None

Change-Id: I9f5bf7ba9d4211f782ff260fbce17deb7c53a31f
Signed-off-by: Alexandru M Stan <amstan@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/236087
Reviewed-by: Vincent Palatin <vpalatin@chromium.org>
Reviewed-by: Alec Berg <alecaberg@chromium.org>
Reviewed-by: Randall Spangler <rspangler@chromium.org>
2014-12-18 00:46:33 +00:00

39 lines
1.2 KiB
C

/* Copyright (c) 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.
*
* Registers map and definitions for Cortex-M0 processor
*/
#ifndef __CPU_H
#define __CPU_H
#include <stdint.h>
/* Macro to access 32-bit registers */
#define CPUREG(addr) (*(volatile uint32_t*)(addr))
/* Nested Vectored Interrupt Controller */
#define CPU_NVIC_EN(x) CPUREG(0xe000e100)
#define CPU_NVIC_DIS(x) CPUREG(0xe000e180)
#define CPU_NVIC_UNPEND(x) CPUREG(0xe000e280)
#define CPU_NVIC_ISPR(x) CPUREG(0xe000e200)
#define CPU_NVIC_PRI(x) CPUREG(0xe000e400 + 4 * (x))
/* System Control Block */
/* SCB AIRCR : Application interrupt and reset control register */
#define CPU_NVIC_APINT CPUREG(0xe000ed0c)
/* SCB SCR : System Control Register */
#define CPU_SCB_SYSCTRL CPUREG(0xe000ed10)
#define CPU_NVIC_CCR CPUREG(0xe000ed14)
#define CPU_NVIC_SHCSR2 CPUREG(0xe000ed1c)
#define CPU_NVIC_SHCSR3 CPUREG(0xe000ed20)
#define CPU_NVIC_CCR_UNALIGN_TRAP (1 << 3)
/* Set up the cpu to detect faults */
void cpu_init(void);
#endif /* __CPU_H */