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>
diff --git a/drivers/marvell/mg_conf_cm3/mg_conf_cm3.c b/drivers/marvell/mg_conf_cm3/mg_conf_cm3.c
new file mode 100644
index 0000000..e249b5b
--- /dev/null
+++ b/drivers/marvell/mg_conf_cm3/mg_conf_cm3.c
@@ -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.
+ */
+}
diff --git a/drivers/marvell/mg_conf_cm3/mg_conf_cm3.h b/drivers/marvell/mg_conf_cm3/mg_conf_cm3.h
new file mode 100644
index 0000000..44c7b69
--- /dev/null
+++ b/drivers/marvell/mg_conf_cm3/mg_conf_cm3.h
@@ -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);