From mboxrd@z Thu Jan 1 00:00:00 1970 From: Heiko Stuebner Date: Fri, 5 Apr 2019 10:30:06 +0200 Subject: [U-Boot] [PATCH 1/8] arm: v7: add read_mpidr function for arm32 In-Reply-To: <20190405083013.5473-1-heiko@sntech.de> References: <20190405083013.5473-1-heiko@sntech.de> Message-ID: <20190405083013.5473-2-heiko@sntech.de> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de Function to get the contents of the mpidr register, similar to its arm64 counterpart. Signed-off-by: Heiko Stuebner --- arch/arm/include/asm/system.h | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/arch/arm/include/asm/system.h b/arch/arm/include/asm/system.h index aed2e3c51e..b5332f4347 100644 --- a/arch/arm/include/asm/system.h +++ b/arch/arm/include/asm/system.h @@ -364,6 +364,15 @@ static inline int is_hyp(void) #endif } +static inline unsigned long read_mpidr(void) +{ + unsigned long val; + + asm volatile ("mrc p15, 0, %0, c0, c0, 5" : "=r" (val)); + + return val; +} + static inline unsigned int get_cr(void) { unsigned int val; -- 2.20.1