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ARM: PSCI:Add correct jump point for secondary cores

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Add correct jump point for secondary cores in case
THUMB2 mode of operation is enabled.The jump point allows
HLOS to program the cores to first run in THUMB2 mode.

Change-Id: Iecef92790fa37781f6a800a40d71a6a07d4fa6c5
Signed-off-by: Archit Saxena <archsaxe@codeaurora.org>
Signed-off-by: Avaneesh Kumar Dwivedi <akdwived@codeaurora.org>
This commit is contained in:
Archit Saxena
2019-07-31 17:22:21 +05:30
committed by Gerrit - the friendly Code Review server
parent 32e310dcb8
commit df1b567cdc
2 changed files with 18 additions and 3 deletions
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8
arch/arm/kernel/psci_smp.c
View File

@@ -47,13 +47,19 @@
*
*/
#ifdef CONFIG_THUMB2_KERNEL
#define secondary_start secondary_startup_arm
extern void secondary_startup_arm(void);
#else
#define secondary_start secondary_startup
extern void secondary_startup(void);
#endif
static int psci_boot_secondary(unsigned int cpu, struct task_struct *idle)
{
if (psci_ops.cpu_on)
return psci_ops.cpu_on(cpu_logical_map(cpu),
virt_to_idmap(&secondary_startup));
virt_to_idmap(&secondary_start));
return -ENODEV;
}

13
drivers/firmware/psci.c
View File

@@ -40,6 +40,15 @@
* For such calls PSCI_FN_NATIVE(version, name) will choose the appropriate
* (native-width) function ID.
*/
#ifdef CONFIG_THUMB2_KERNEL
#define cpu_resume_secondary cpu_resume_arm
extern void cpu_resume_arm(void);
#else
#define cpu_resume_secondary cpu_resume
extern void cpu_resume(void);
#endif
#ifdef CONFIG_64BIT
#define PSCI_FN_NATIVE(version, name) PSCI_##version##_FN64_##name
#else
@@ -405,7 +414,7 @@ int psci_cpu_init_idle(unsigned int cpu)
static int psci_suspend_finisher(unsigned long state_id)
{
return psci_ops.cpu_suspend(state_id,
__pa_symbol(cpu_resume));
__pa_symbol(cpu_resume_secondary));
}
int psci_cpu_suspend_enter(unsigned long state_id)
{
@@ -440,7 +449,7 @@ CPUIDLE_METHOD_OF_DECLARE(psci, "psci", &psci_cpuidle_ops);
static int psci_system_suspend(unsigned long unused)
{
return invoke_psci_fn(PSCI_FN_NATIVE(1_0, SYSTEM_SUSPEND),
__pa_symbol(cpu_resume), 0, 0);
__pa_symbol(cpu_resume_secondary), 0, 0);
}
static int psci_system_suspend_enter(suspend_state_t state)