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drivers: marvell: mg_conf_cm3: add basic driver 

Implement function which will allow to start AP FW.

Change-Id: Ie0fc8ad138bf56b10809cdc92d1e5e96a2aaf33f
Signed-off-by: Grzegorz Jaszczyk <jaz@semihalf.com>
This commit is contained in:
Grzegorz Jaszczyk 2019-04-12 16:53:49 +02:00 committed by Manish Pandey
parent 5985a1e426
commit 9b88367323
3 changed files with 43 additions and 1 deletions
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33
drivers/marvell/mg_conf_cm3/mg_conf_cm3.c Normal file
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@ -0,0 +1,33 @@
/*
* Copyright (C) 2019 Marvell International Ltd.
*
* SPDX-License-Identifier: BSD-3-Clause
* https://spdx.org/licenses
*/
#include <a8k_plat_def.h>
#include <common/debug.h>
#include <lib/mmio.h>
#include <mvebu.h>
/* CONFI REGISTERS */
#define MG_CM3_CONFI_BASE(CP) (MVEBU_CP_REGS_BASE(CP) + 0x100000)
#define MG_CM3_CONFI_GLOB_CFG_REG(CP) (MG_CM3_CONFI_BASE(CP) + 0x2B500)
#define CM3_CPU_EN_BIT BIT(28)
#define MG_CM3_MG_INT_MFX_REG(CP) (MG_CM3_CONFI_BASE(CP) + 0x2B054)
#define CM3_SYS_RESET_BIT BIT(0)
void mg_start_ap_fw(int cp_nr)
{
if (mmio_read_32(MG_CM3_CONFI_GLOB_CFG_REG(cp_nr)) & CM3_CPU_EN_BIT) {
VERBOSE("cm3 already running\n");
return; /* cm3 already running */
}
mmio_setbits_32(MG_CM3_CONFI_GLOB_CFG_REG(cp_nr), CM3_CPU_EN_BIT);
mmio_setbits_32(MG_CM3_MG_INT_MFX_REG(cp_nr), CM3_SYS_RESET_BIT);
/* TODO: add some routine for checking if ap process is running, if not
* disable cm3.
*/
}

8
drivers/marvell/mg_conf_cm3/mg_conf_cm3.h Normal file
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@ -0,0 +1,8 @@
/*
* Copyright (C) 2019 Marvell International Ltd.
*
* SPDX-License-Identifier: BSD-3-Clause
* https://spdx.org/licenses
*/
void mg_start_ap_fw(int cp_nr);

3
plat/marvell/armada/a8k/common/a8k_common.mk
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@ -85,7 +85,8 @@ MARVELL_DRV := $(MARVELL_DRV_BASE)/io_win.c \
$(MARVELL_DRV_BASE)/ccu.c \
$(MARVELL_DRV_BASE)/cache_llc.c \
$(MARVELL_DRV_BASE)/comphy/phy-comphy-cp110.c \
$(MARVELL_DRV_BASE)/mc_trustzone/mc_trustzone.c
$(MARVELL_DRV_BASE)/mc_trustzone/mc_trustzone.c \
$(MARVELL_DRV_BASE)/mg_conf_cm3/mg_conf_cm3.c
BL31_PORTING_SOURCES := $(BOARD_DIR)/board/marvell_plat_config.c