zynqmp : pm : Adds new zynqmp-pm api SMC call for register access
This patch adds new zynqmp-pm api to provide read/write access to
CSU or PMU global registers.
Signed-off-by: Kalyani Akula <kalyania@xilinx.com>
Signed-off-by: Rajan Vaja <rajan.vaja@xilinx.com>
Change-Id: I4fd52eb732fc3e6a8bccd96cad7dc090b2161042
diff --git a/plat/xilinx/zynqmp/include/zynqmp_def.h b/plat/xilinx/zynqmp/include/zynqmp_def.h
index 4614395..b492210 100644
--- a/plat/xilinx/zynqmp/include/zynqmp_def.h
+++ b/plat/xilinx/zynqmp/include/zynqmp_def.h
@@ -350,4 +350,10 @@
#define AFIFM6_WRCTRL U(13)
#define FABRIC_WIDTH U(3)
+/* CSUDMA Module Base Address*/
+#define CSUDMA_BASE 0xFFC80000
+
+/* RSA-CORE Module Base Address*/
+#define RSA_CORE_BASE 0xFFCE0000
+
#endif /* ZYNQMP_DEF_H */
diff --git a/plat/xilinx/zynqmp/pm_service/pm_api_sys.c b/plat/xilinx/zynqmp/pm_service/pm_api_sys.c
index 1ec06f9..9a1f1b4 100644
--- a/plat/xilinx/zynqmp/pm_service/pm_api_sys.c
+++ b/plat/xilinx/zynqmp/pm_service/pm_api_sys.c
@@ -1546,3 +1546,48 @@
PM_PACK_PAYLOAD2(payload, PM_PLL_GET_MODE, nid);
return pm_ipi_send_sync(primary_proc, payload, mode, 1);
}
+
+/**
+ * pm_register_access() - PM API for register read/write access data
+ *
+ * @register_access_id Register_access_id which says register read/write
+ *
+ * @address Address of the register to be accessed
+ *
+ * @mask Mask value to be used while writing value
+ *
+ * @value Value to be written to register
+ *
+ * @out Returned output data
+ *
+ * This function returns requested data.
+ *
+ * @return Returns status, either success or error+reason
+ */
+enum pm_ret_status pm_register_access(unsigned int register_access_id,
+ unsigned int address,
+ unsigned int mask,
+ unsigned int value,
+ unsigned int *out)
+{
+ enum pm_ret_status ret;
+
+ if (((ZYNQMP_CSU_BASEADDR & address) != ZYNQMP_CSU_BASEADDR) &&
+ ((CSUDMA_BASE & address) != CSUDMA_BASE) &&
+ ((RSA_CORE_BASE & address) != RSA_CORE_BASE) &&
+ ((PMU_GLOBAL_BASE & address) != PMU_GLOBAL_BASE))
+ return PM_RET_ERROR_ACCESS;
+
+ switch (register_access_id) {
+ case CONFIG_REG_WRITE:
+ ret = pm_mmio_write(address, mask, value);
+ break;
+ case CONFIG_REG_READ:
+ ret = pm_mmio_read(address, out);
+ break;
+ default:
+ ret = PM_RET_ERROR_ARGS;
+ WARN("Unimplemented register_access call\n\r");
+ }
+ return ret;
+}
diff --git a/plat/xilinx/zynqmp/pm_service/pm_api_sys.h b/plat/xilinx/zynqmp/pm_service/pm_api_sys.h
index 930e470..60fc303 100644
--- a/plat/xilinx/zynqmp/pm_service/pm_api_sys.h
+++ b/plat/xilinx/zynqmp/pm_service/pm_api_sys.h
@@ -28,6 +28,11 @@
PM_QID_CLOCK_GET_MAX_DIVISOR,
};
+enum pm_register_access_id {
+ CONFIG_REG_WRITE,
+ CONFIG_REG_READ,
+};
+
/**********************************************************
* System-level API function declarations
**********************************************************/
@@ -175,6 +180,11 @@
enum pm_ret_status pm_aes_engine(uint32_t address_high,
uint32_t address_low,
uint32_t *value);
+enum pm_ret_status pm_register_access(unsigned int register_access_id,
+ unsigned int address,
+ unsigned int mask,
+ unsigned int value,
+ unsigned int *out);
enum pm_ret_status pm_pll_set_parameter(enum pm_node_id nid,
enum pm_pll_param param_id,
diff --git a/plat/xilinx/zynqmp/pm_service/pm_defs.h b/plat/xilinx/zynqmp/pm_service/pm_defs.h
index 4776d42..8b28807 100644
--- a/plat/xilinx/zynqmp/pm_service/pm_defs.h
+++ b/plat/xilinx/zynqmp/pm_service/pm_defs.h
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2013-2018, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2013-2020, ARM Limited and Contributors. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
@@ -97,6 +97,8 @@
PM_PLL_GET_PARAMETER,
PM_PLL_SET_MODE,
PM_PLL_GET_MODE,
+ /* PM Register Access API */
+ PM_REGISTER_ACCESS,
PM_API_MAX
};
diff --git a/plat/xilinx/zynqmp/pm_service/pm_svc_main.c b/plat/xilinx/zynqmp/pm_service/pm_svc_main.c
index 14321ec..bf608db 100644
--- a/plat/xilinx/zynqmp/pm_service/pm_svc_main.c
+++ b/plat/xilinx/zynqmp/pm_service/pm_svc_main.c
@@ -606,6 +606,15 @@
SMC_RET1(handle, (uint64_t)ret | ((uint64_t)mode << 32));
}
+ case PM_REGISTER_ACCESS:
+ {
+ uint32_t value;
+
+ ret = pm_register_access(pm_arg[0], pm_arg[1], pm_arg[2],
+ pm_arg[3], &value);
+ SMC_RET1(handle, (uint64_t)ret | ((uint64_t)value) << 32);
+ }
+
default:
WARN("Unimplemented PM Service Call: 0x%x\n", smc_fid);
SMC_RET1(handle, SMC_UNK);