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Re: [Minios-devel] [PATCH 33/40] arm64: gic: implement the REG_WRITE32/REG_READ32
Hi Shijie,
On 03/11/17 03:12, Huang Shijie wrote:
Implement the REG_WRITE32/REG_READ32.
This patch refers to Chen Baozi's patch:
"Initial codes for arm64"
Change-Id: I942d68d7e9ed31382951a2bfebd29d87acc84281
Jira: ENTOS-247
Signed-off-by: Huang Shijie <shijie.huang@xxxxxxx>
---
arch/arm/gic.c | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/arch/arm/gic.c b/arch/arm/gic.c
index e72c723..ce7f7c8 100644
--- a/arch/arm/gic.c
+++ b/arch/arm/gic.c
@@ -44,14 +44,22 @@ static struct gic gic;
static inline uint32_t REG_READ32(volatile uint32_t *addr)
This should be implemented in an arch specific header.
{
uint32_t value;
+#if defined(__arm__)
__asm__ __volatile__("ldr %0, [%1]":"=&r"(value):"r"(addr));
+#else
+ __asm__ __volatile__("ldr %w0, [%1]":"=&r"(value):"r"(addr));
+#endif
rmb();
return value;
}
static inline void REG_WRITE32(volatile uint32_t *addr, unsigned int value)
{
+#if defined(__arm__)
__asm__ __volatile__("str %0, [%1]"::"r"(value), "r"(addr));
+#else
+ __asm__ __volatile__("str %w0, [%1]"::"r" (value), "r"(addr));
+#endif
wmb();
}
>
Cheers,
--
Julien Grall
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