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powerpc/32s: drop CPU_FTR_USE_RTC feature 

CPU_FTR_USE_RTC feature only applies to powerpc601.

Drop this feature and replace it with tests on CONFIG_PPC_BOOK3S_601.

Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/170411e2360861f4a95c21faad43519a08bc4040.1566834712.git.christophe.leroy@c-s.fr
This commit is contained in:
Christophe Leroy 2019-08-26 15:52:16 +00:00 committed by Michael Ellerman
parent 12c3f1fd87
commit 88fb309409
5 changed files with 7 additions and 30 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
arch/powerpc/include/asm/cputable.h
View File

@ -149,7 +149,6 @@ static inline void cpu_feature_keys_init(void) { }
#define CPU_FTR_SPEC7450 ASM_CONST(0x00004000)
#define CPU_FTR_TAU ASM_CONST(0x00008000)
#define CPU_FTR_CAN_DOZE ASM_CONST(0x00010000)
#define CPU_FTR_USE_RTC ASM_CONST(0x00020000)
#define CPU_FTR_L3CR ASM_CONST(0x00040000)
#define CPU_FTR_L3_DISABLE_NAP ASM_CONST(0x00080000)
#define CPU_FTR_NAP_DISABLE_L2_PR ASM_CONST(0x00100000)
@ -293,7 +292,7 @@ static inline void cpu_feature_keys_init(void) { }
#endif
#define CPU_FTRS_PPC601 (CPU_FTR_COMMON | \
CPU_FTR_COHERENT_ICACHE | CPU_FTR_UNIFIED_ID_CACHE | CPU_FTR_USE_RTC)
CPU_FTR_COHERENT_ICACHE | CPU_FTR_UNIFIED_ID_CACHE)
#define CPU_FTRS_603 (CPU_FTR_COMMON | CPU_FTR_MAYBE_CAN_DOZE | \
CPU_FTR_MAYBE_CAN_NAP | CPU_FTR_PPC_LE | CPU_FTR_NOEXECUTE)
#define CPU_FTRS_604 (CPU_FTR_COMMON | CPU_FTR_PPC_LE)

6
arch/powerpc/include/asm/time.h
View File

@ -41,11 +41,7 @@ struct div_result {
/* Accessor functions for the timebase (RTC on 601) registers. */
/* If one day CONFIG_POWER is added just define __USE_RTC as 1 */
#ifdef CONFIG_PPC_BOOK3S_32
#define __USE_RTC() (cpu_has_feature(CPU_FTR_USE_RTC))
#else
#define __USE_RTC() 0
#endif
#define __USE_RTC() (IS_ENABLED(CONFIG_PPC_BOOK3S_601))
#ifdef CONFIG_PPC64

22
arch/powerpc/kernel/vdso.c
View File

@ -94,28 +94,6 @@ static struct vdso_patch_def vdso_patches[] = {
CPU_FTR_COHERENT_ICACHE, CPU_FTR_COHERENT_ICACHE,
"__kernel_sync_dicache", "__kernel_sync_dicache_p5"
},
#ifdef CONFIG_PPC32
{
CPU_FTR_USE_RTC, CPU_FTR_USE_RTC,
"__kernel_gettimeofday", NULL
},
{
CPU_FTR_USE_RTC, CPU_FTR_USE_RTC,
"__kernel_clock_gettime", NULL
},
{
CPU_FTR_USE_RTC, CPU_FTR_USE_RTC,
"__kernel_clock_getres", NULL
},
{
CPU_FTR_USE_RTC, CPU_FTR_USE_RTC,
"__kernel_get_tbfreq", NULL
},
{
CPU_FTR_USE_RTC, CPU_FTR_USE_RTC,
"__kernel_time", NULL
},
#endif
};
/*

2
arch/powerpc/kernel/vdso32/datapage.S
View File

@ -70,6 +70,7 @@ V_FUNCTION_END(__kernel_get_syscall_map)
*
* returns the timebase frequency in HZ
*/
#ifndef CONFIG_PPC_BOOK3S_601
V_FUNCTION_BEGIN(__kernel_get_tbfreq)
.cfi_startproc
mflr r12
@ -82,3 +83,4 @@ V_FUNCTION_BEGIN(__kernel_get_tbfreq)
blr
.cfi_endproc
V_FUNCTION_END(__kernel_get_tbfreq)
#endif

4
arch/powerpc/kernel/vdso32/vdso32.lds.S
View File

@ -144,10 +144,13 @@ VERSION
__kernel_datapage_offset;
__kernel_get_syscall_map;
#ifndef CONFIG_PPC_BOOK3S_601
__kernel_gettimeofday;
__kernel_clock_gettime;
__kernel_clock_getres;
__kernel_time;
__kernel_get_tbfreq;
#endif
__kernel_sync_dicache;
__kernel_sync_dicache_p5;
__kernel_sigtramp32;
@ -155,7 +158,6 @@ VERSION
#ifdef CONFIG_PPC64
__kernel_getcpu;
#endif
__kernel_time;
local: *;
};