diff options
| author | Linus Walleij <linus.walleij@linaro.org> | 2024-03-25 08:28:50 +0100 |
|---|---|---|
| committer | Russell King (Oracle) <rmk+kernel@armlinux.org.uk> | 2024-04-18 12:10:44 +0100 |
| commit | 66abdd3b5d4e53bc17c524493b404266e0af114e (patch) | |
| tree | 58681beb24581b76b3f1da9ed64c705cb217a9a0 /arch/arm/include/asm/proc-fns.h | |
| parent | a8f15b31a6479d077b851c86a2cc47391bccafb5 (diff) | |
ARM: 9356/2: Move asm statements accessing TTBCR into C functions
This patch implements cpu_get_ttbcr() and cpu_set_ttbcr() and replaces
the corresponding asm statements.
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
Tested-by: Florian Fainelli <florian.fainelli@broadcom.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Diffstat (limited to 'arch/arm/include/asm/proc-fns.h')
| -rw-r--r-- | arch/arm/include/asm/proc-fns.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/arch/arm/include/asm/proc-fns.h b/arch/arm/include/asm/proc-fns.h index 280396483f5d..9b3105a2a5e0 100644 --- a/arch/arm/include/asm/proc-fns.h +++ b/arch/arm/include/asm/proc-fns.h @@ -178,6 +178,18 @@ extern void cpu_resume(void); }) #endif +static inline unsigned int cpu_get_ttbcr(void) +{ + unsigned int ttbcr; + asm("mrc p15, 0, %0, c2, c0, 2" : "=r" (ttbcr)); + return ttbcr; +} + +static inline void cpu_set_ttbcr(unsigned int ttbcr) +{ + asm("mcr p15, 0, %0, c2, c0, 2" : : "r" (ttbcr)); +} + #else /*!CONFIG_MMU */ #define cpu_switch_mm(pgd,mm) { } |