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arm: Use the WEAK assembly entry point consistently

Browse source 
It is a bad idea, and more modern toolchains will fail, if you declare
an assembly function to be global and then weak, instead of declaring it
weak to start with. Update assorted assembly files to use the WEAK macro
directly.

Signed-off-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Pali Rohár <pali@kernel.org>
This commit is contained in:
Tom Rini 2022-11-22 12:31:56 -05:00
parent 583f124aac
commit fc2240046c
5 changed files with 33 additions and 66 deletions
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3
arch/arm/cpu/armv7/nonsec_virt.S
View file

@ -207,7 +207,7 @@ ENDPROC(_nonsec_init)
#ifdef CONFIG_SMP_PEN_ADDR
/* void __weak smp_waitloop(unsigned previous_address); */
ENTRY(smp_waitloop)
WEAK(smp_waitloop)
wfi
ldr r1, =CONFIG_SMP_PEN_ADDR @ load start address
ldr r1, [r1]
@ -219,7 +219,6 @@ ENTRY(smp_waitloop)
mov r0, r1
b _do_nonsec_entry
ENDPROC(smp_waitloop)
.weak smp_waitloop
#endif
.popsection

75
arch/arm/cpu/armv7/psci.S
View file

@ -36,34 +36,32 @@ _psci_vectors:
b default_psci_vector @ irq
b psci_fiq_enter @ fiq
ENTRY(psci_fiq_enter)
WEAK(psci_fiq_enter)
movs pc, lr
ENDPROC(psci_fiq_enter)
.weak psci_fiq_enter
ENTRY(default_psci_vector)
WEAK(default_psci_vector)
movs pc, lr
ENDPROC(default_psci_vector)
.weak default_psci_vector
ENTRY(psci_version)
ENTRY(psci_cpu_suspend)
ENTRY(psci_cpu_off)
ENTRY(psci_cpu_on)
ENTRY(psci_affinity_info)
ENTRY(psci_migrate)
ENTRY(psci_migrate_info_type)
ENTRY(psci_migrate_info_up_cpu)
ENTRY(psci_system_off)
ENTRY(psci_system_reset)
ENTRY(psci_features)
ENTRY(psci_cpu_freeze)
ENTRY(psci_cpu_default_suspend)
ENTRY(psci_node_hw_state)
ENTRY(psci_system_suspend)
ENTRY(psci_set_suspend_mode)
ENTRY(psi_stat_residency)
ENTRY(psci_stat_count)
WEAK(psci_version)
WEAK(psci_cpu_suspend)
WEAK(psci_cpu_off)
WEAK(psci_cpu_on)
WEAK(psci_affinity_info)
WEAK(psci_migrate)
WEAK(psci_migrate_info_type)
WEAK(psci_migrate_info_up_cpu)
WEAK(psci_system_off)
WEAK(psci_system_reset)
WEAK(psci_features)
WEAK(psci_cpu_freeze)
WEAK(psci_cpu_default_suspend)
WEAK(psci_node_hw_state)
WEAK(psci_system_suspend)
WEAK(psci_set_suspend_mode)
WEAK(psi_stat_residency)
WEAK(psci_stat_count)
mov r0, #ARM_PSCI_RET_NI @ Return -1 (Not Implemented)
mov pc, lr
ENDPROC(psci_stat_count)
@ -84,24 +82,6 @@ ENDPROC(psci_cpu_on)
ENDPROC(psci_cpu_off)
ENDPROC(psci_cpu_suspend)
ENDPROC(psci_version)
.weak psci_version
.weak psci_cpu_suspend
.weak psci_cpu_off
.weak psci_cpu_on
.weak psci_affinity_info
.weak psci_migrate
.weak psci_migrate_info_type
.weak psci_migrate_info_up_cpu
.weak psci_system_off
.weak psci_system_reset
.weak psci_features
.weak psci_cpu_freeze
.weak psci_cpu_default_suspend
.weak psci_node_hw_state
.weak psci_system_suspend
.weak psci_set_suspend_mode
.weak psi_stat_residency
.weak psci_stat_count
_psci_table:
.word ARM_PSCI_FN_CPU_SUSPEND
@ -179,12 +159,11 @@ _smc_psci:
movs pc, lr @ Return to the kernel
@ Requires dense and single-cluster CPU ID space
ENTRY(psci_get_cpu_id)
WEAK(psci_get_cpu_id)
mrc p15, 0, r0, c0, c0, 5 /* read MPIDR */
and r0, r0, #0xff /* return CPU ID in cluster */
bx lr
ENDPROC(psci_get_cpu_id)
.weak psci_get_cpu_id
/* Imported from Linux kernel */
ENTRY(psci_v7_flush_dcache_all)
@ -236,7 +215,7 @@ finished:
bx lr
ENDPROC(psci_v7_flush_dcache_all)
ENTRY(psci_disable_smp)
WEAK(psci_disable_smp)
mrc p15, 0, r0, c1, c0, 1 @ ACTLR
bic r0, r0, #(1 << 6) @ Clear SMP bit
mcr p15, 0, r0, c1, c0, 1 @ ACTLR
@ -244,16 +223,14 @@ ENTRY(psci_disable_smp)
dsb
bx lr
ENDPROC(psci_disable_smp)
.weak psci_disable_smp
ENTRY(psci_enable_smp)
WEAK(psci_enable_smp)
mrc p15, 0, r0, c1, c0, 1 @ ACTLR
orr r0, r0, #(1 << 6) @ Set SMP bit
mcr p15, 0, r0, c1, c0, 1 @ ACTLR
isb
bx lr
ENDPROC(psci_enable_smp)
.weak psci_enable_smp
ENTRY(psci_cpu_off_common)
push {lr}
@ -316,15 +293,13 @@ ENTRY(psci_stack_setup)
bx r6
ENDPROC(psci_stack_setup)
ENTRY(psci_arch_init)
WEAK(psci_arch_init)
mov pc, lr
ENDPROC(psci_arch_init)
.weak psci_arch_init
ENTRY(psci_arch_cpu_entry)
WEAK(psci_arch_cpu_entry)
mov pc, lr
ENDPROC(psci_arch_cpu_entry)
.weak psci_arch_cpu_entry
ENTRY(psci_cpu_entry)
bl psci_enable_smp

6
arch/arm/cpu/armv7/start.S
View file

@ -151,16 +151,14 @@ ENDPROC(c_runtime_cpu_setup)
* Don't save anything to stack even if compiled with -O0
*
*************************************************************************/
ENTRY(save_boot_params)
WEAK(save_boot_params)
b save_boot_params_ret @ back to my caller
ENDPROC(save_boot_params)
.weak save_boot_params
#ifdef CONFIG_ARMV7_LPAE
ENTRY(switch_to_hypervisor)
WEAK(switch_to_hypervisor)
b switch_to_hypervisor_ret
ENDPROC(switch_to_hypervisor)
.weak switch_to_hypervisor
#endif
/*************************************************************************

12
arch/arm/cpu/armv8/psci.S
View file

@ -12,11 +12,10 @@
/* Default PSCI function, return -1, Not Implemented */
#define PSCI_DEFAULT(__fn) \
ENTRY(__fn); \
WEAK(__fn); \
mov w0, #ARM_PSCI_RET_NI; \
ret; \
ENDPROC(__fn); \
.weak __fn
/* PSCI function and ID table definition*/
#define PSCI_TABLE(__id, __fn) \
@ -207,7 +206,7 @@ handle_smc64:
* used for the return value, while in this PSCI environment, X0 usually holds
* the SMC function identifier, so X0 should be saved by caller function.
*/
ENTRY(psci_get_cpu_id)
WEAK(psci_get_cpu_id)
#ifdef CONFIG_ARMV8_PSCI_CPUS_PER_CLUSTER
mrs x9, MPIDR_EL1
ubfx x9, x9, #8, #8
@ -221,7 +220,6 @@ ENTRY(psci_get_cpu_id)
add x0, x10, x9
ret
ENDPROC(psci_get_cpu_id)
.weak psci_get_cpu_id
/* CPU ID input in x0, stack top output in x0*/
LENTRY(psci_get_cpu_stack_top)
@ -261,10 +259,9 @@ handle_sync:
* Override this function if custom error handling is
* needed for asynchronous aborts
*/
ENTRY(plat_error_handler)
WEAK(plat_error_handler)
ret
ENDPROC(plat_error_handler)
.weak plat_error_handler
handle_error:
bl psci_get_cpu_id
@ -323,9 +320,8 @@ ENTRY(psci_setup_vectors)
ret
ENDPROC(psci_setup_vectors)
ENTRY(psci_arch_init)
WEAK(psci_arch_init)
ret
ENDPROC(psci_arch_init)
.weak psci_arch_init
.popsection

3
arch/arm/lib/relocate.S
View file

@ -23,9 +23,8 @@
*/
.section .text.relocate_vectors,"ax",%progbits
.weak relocate_vectors
ENTRY(relocate_vectors)
WEAK(relocate_vectors)
#ifdef CONFIG_CPU_V7M
/*