Commit 8c11ebfc authored by Luka Kovacic's avatar Luka Kovacic
Browse files

a8k: Implement platform specific power off



Implements a way to add platform specific power off code to a
Marvell Armada 8K platform.

Marvell Armada 8K boards can now add a board/system_power.c file
that contains a system_power_off() function.
This function can now send a command to a power management MCU or
other board periferals before shutting the board down.

Signed-off-by: default avatarLuka Kovacic <luka.kovacic@sartura.hr>
Cc: Luka Perkov <luka.perkov@sartura.hr>
Change-Id: Iaba20bc2f603195679c54ad12c0c18962dd8e3db
---
I am working on a device that will be ported later, which has a
custom power management MCU that handles LEDs, board power and fans
and requires this separation.
parent 743600b2
......@@ -124,5 +124,6 @@ int marvell_get_iob_memory_map(struct addr_map_win **win,
uint32_t *size, uintptr_t base);
int marvell_get_ccu_memory_map(int ap_idx, struct addr_map_win **win,
uint32_t *size);
int system_power_off(void);
#endif /* ARMADA_COMMON_H */
......@@ -37,6 +37,13 @@ DOIMAGETOOL ?= ${DOIMAGEPATH}/doimage
ROM_BIN_EXT ?= $(BUILD_PLAT)/ble.bin
DOIMAGE_FLAGS += -b $(ROM_BIN_EXT) $(NAND_DOIMAGE_FLAGS) $(DOIMAGE_SEC_FLAGS)
# Check whether to build system_power.c for the platform
ifneq ("$(wildcard $(PLAT_FAMILY_BASE)/$(PLAT)/board/system_power.c)","")
SYSTEM_POWER_SUPPORT = 1
else
SYSTEM_POWER_SUPPORT = 0
endif
# This define specifies DDR type for BLE
$(eval $(call add_define,CONFIG_DDR4))
......@@ -82,6 +89,10 @@ MARVELL_DRV := $(MARVELL_DRV_BASE)/io_win.c \
BL31_PORTING_SOURCES := $(PLAT_FAMILY_BASE)/$(PLAT)/board/marvell_plat_config.c
ifeq ($(SYSTEM_POWER_SUPPORT),1)
BL31_PORTING_SOURCES += $(PLAT_FAMILY_BASE)/$(PLAT)/board/system_power.c
endif
BL31_SOURCES += lib/cpus/aarch64/cortex_a72.S \
$(PLAT_COMMON_BASE)/aarch64/plat_helpers.S \
$(PLAT_COMMON_BASE)/aarch64/plat_arch_config.c \
......
......@@ -792,8 +792,20 @@ __dead2 a8k_pwr_domain_pwr_down_wfi(const psci_power_state_t *target_state)
* A8K handlers to shutdown/reboot the system
*****************************************************************************
*/
/* Set a weak stub for platforms that don't configure system power off */
#pragma weak system_power_off
int system_power_off(void)
{
return 0;
}
static void __dead2 a8k_system_off(void)
{
/* Call the platform specific system power off function */
system_power_off();
/* board doesn't have a system off implementation */
ERROR("%s: needs to be implemented\n", __func__);
panic();
}
......
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