| Message ID | 1415667650-14899-8-git-send-email-sjg@chromium.org |
|---|---|
| State | Superseded |
| Delegated to: | Simon Glass |
| Headers | show |
Reviewed-by: Bin Meng <bmeng.cn@gmail.com> On Tue, Nov 11, 2014 at 9:00 AM, Simon Glass <sjg@chromium.org> wrote: > Add a function to get the stack pointer and another to halt the CPU. > > Signed-off-by: Simon Glass <sjg@chromium.org> > --- > > Changes in v2: > - Remove the cpuid functions since they were already added in another patch > > arch/x86/include/asm/processor.h | 19 +++++++++++++++++++ > 1 file changed, 19 insertions(+) > > diff --git a/arch/x86/include/asm/processor.h b/arch/x86/include/asm/processor.h > index bb3172f..b2854a9 100644 > --- a/arch/x86/include/asm/processor.h > +++ b/arch/x86/include/asm/processor.h > @@ -30,4 +30,23 @@ enum { > > #define X86_GDT_SIZE (X86_GDT_NUM_ENTRIES * X86_GDT_ENTRY_SIZE) > > +#ifndef __ASSEMBLY__ > + > +static inline __attribute__((always_inline)) void cpu_hlt(void) > +{ > + asm("hlt"); > +} > + > +static inline ulong cpu_get_sp(void) > +{ > + ulong result; > + > + asm volatile( > + "mov %%esp, %%eax" > + : "=a" (result)); > + return result; > +} > + > +#endif /* __ASSEMBLY__ */ > + > #endif > -- > 2.1.0.rc2.206.gedb03e5 > > _______________________________________________ > U-Boot mailing list > U-Boot@lists.denx.de > http://lists.denx.de/mailman/listinfo/u-boot
On 11 November 2014 02:32, Bin Meng <bmeng.cn@gmail.com> wrote: > Reviewed-by: Bin Meng <bmeng.cn@gmail.com> > Applied to u-boot-x86.
diff --git a/arch/x86/include/asm/processor.h b/arch/x86/include/asm/processor.h index bb3172f..b2854a9 100644 --- a/arch/x86/include/asm/processor.h +++ b/arch/x86/include/asm/processor.h @@ -30,4 +30,23 @@ enum { #define X86_GDT_SIZE (X86_GDT_NUM_ENTRIES * X86_GDT_ENTRY_SIZE) +#ifndef __ASSEMBLY__ + +static inline __attribute__((always_inline)) void cpu_hlt(void) +{ + asm("hlt"); +} + +static inline ulong cpu_get_sp(void) +{ + ulong result; + + asm volatile( + "mov %%esp, %%eax" + : "=a" (result)); + return result; +} + +#endif /* __ASSEMBLY__ */ + #endif
Add a function to get the stack pointer and another to halt the CPU. Signed-off-by: Simon Glass <sjg@chromium.org> --- Changes in v2: - Remove the cpuid functions since they were already added in another patch arch/x86/include/asm/processor.h | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+)