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authorAlexander Graf <agraf@suse.de>2016-08-16 21:08:49 +0200
committerAlexander Graf <agraf@suse.de>2016-10-19 09:01:50 +0200
commitb6575f34e20ddc40baa391c2db0e1e015e942af2 (patch)
tree1d7a2ba2733ccf263c6950ad767113f2ca4b7f58 /arch/arm/cpu
parent8069821fc2cb55a458efef1c4c614810302b6ab2 (diff)
efi_loader: Add generic PSCI RTS
Now that we have generic PSCI reset and shutdown support in place, we can advertise those as EFI Run Time Services, allowing efi applications and OSs to reset and shut down systems. Signed-off-by: Alexander Graf <agraf@suse.de> Reviewed-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'arch/arm/cpu')
-rw-r--r--arch/arm/cpu/armv8/fwcall.c31
1 files changed, 26 insertions, 5 deletions
diff --git a/arch/arm/cpu/armv8/fwcall.c b/arch/arm/cpu/armv8/fwcall.c
index c57b15f17f..64539f9cc6 100644
--- a/arch/arm/cpu/armv8/fwcall.c
+++ b/arch/arm/cpu/armv8/fwcall.c
@@ -6,6 +6,7 @@
#include <asm-offsets.h>
#include <config.h>
+#include <efi_loader.h>
#include <version.h>
#include <asm/macro.h>
#include <asm/psci.h>
@@ -17,7 +18,7 @@
* x0~x7: input arguments
* x0~x3: output arguments
*/
-static void hvc_call(struct pt_regs *args)
+static void EFI_RUNTIME_TEXT hvc_call(struct pt_regs *args)
{
asm volatile(
"ldr x0, %0\n"
@@ -51,7 +52,7 @@ static void hvc_call(struct pt_regs *args)
* x0~x3: output arguments
*/
-void smc_call(struct pt_regs *args)
+void EFI_RUNTIME_TEXT smc_call(struct pt_regs *args)
{
asm volatile(
"ldr x0, %0\n"
@@ -81,9 +82,9 @@ void smc_call(struct pt_regs *args)
* use PSCI on U-Boot running below a hypervisor, please detect
* this and set the flag accordingly.
*/
-static const bool use_smc_for_psci = true;
+static const EFI_RUNTIME_DATA bool use_smc_for_psci = true;
-void __noreturn psci_system_reset(void)
+void __noreturn EFI_RUNTIME_TEXT psci_system_reset(void)
{
struct pt_regs regs;
@@ -98,7 +99,7 @@ void __noreturn psci_system_reset(void)
;
}
-void __noreturn psci_system_off(void)
+void __noreturn EFI_RUNTIME_TEXT psci_system_off(void)
{
struct pt_regs regs;
@@ -118,4 +119,24 @@ void reset_misc(void)
{
psci_system_reset();
}
+
+#ifdef CONFIG_EFI_LOADER
+void EFI_RUNTIME_TEXT EFIAPI efi_reset_system(
+ enum efi_reset_type reset_type,
+ efi_status_t reset_status,
+ unsigned long data_size, void *reset_data)
+{
+ switch (reset_type) {
+ case EFI_RESET_COLD:
+ case EFI_RESET_WARM:
+ psci_system_reset();
+ break;
+ case EFI_RESET_SHUTDOWN:
+ psci_system_off();
+ break;
+ }
+
+ while (1) { }
+}
+#endif /* CONFIG_EFI_LOADER */
#endif /* CONFIG_PSCI_RESET */