This concept exists on x86. Declare it as a generic function so that the value can be accessed by UPL.
Signed-off-by: Simon Glass sjg@chromium.org ---
(no changes since v1)
arch/x86/include/asm/cpu.h | 9 --------- arch/x86/lib/bdinfo.c | 1 + include/cpu.h | 14 ++++++++++++++ 3 files changed, 15 insertions(+), 9 deletions(-)
diff --git a/arch/x86/include/asm/cpu.h b/arch/x86/include/asm/cpu.h index 8c1ef4c8cc1..fd389d4024c 100644 --- a/arch/x86/include/asm/cpu.h +++ b/arch/x86/include/asm/cpu.h @@ -284,15 +284,6 @@ u32 cpu_get_family_model(void); */ u32 cpu_get_stepping(void);
-/** - * cpu_phys_address_size() - Get the physical address size in bits - * - * This is 32 for older CPUs but newer ones may support 36. - * - * Return: address size (typically 32 or 36) - */ -int cpu_phys_address_size(void); - void board_final_init(void); void board_final_cleanup(void);
diff --git a/arch/x86/lib/bdinfo.c b/arch/x86/lib/bdinfo.c index 2a78f578dee..bd2cf0b9fcb 100644 --- a/arch/x86/lib/bdinfo.c +++ b/arch/x86/lib/bdinfo.c @@ -5,6 +5,7 @@ * Copyright 2021 Google LLC */
+#include <cpu.h> #include <efi.h> #include <init.h> #include <asm/cpu.h> diff --git a/include/cpu.h b/include/cpu.h index 0018910d61f..d0cd104c05a 100644 --- a/include/cpu.h +++ b/include/cpu.h @@ -179,4 +179,18 @@ struct udevice *cpu_get_current_dev(void); * @return 0 if OK, -ve on error */ int cpu_release_core(const struct udevice *dev, phys_addr_t addr); + +/** + * cpu_phys_address_size() - Get the physical-address size for the CPU + * + * x86 CPUs have a setting which indicates how many bits of address space are + * available on the CPU. This is 32 for older CPUs but newer ones may support 36 + * or more. + * + * For non-x86 CPUs the result may simply be 32 for 32-bit CPUS or 64 for 64-bit + * + * Return: address size (typically 32 or 36) + */ +int cpu_phys_address_size(void); + #endif