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authorNava kishore Manne <nava.manne@xilinx.com>2019-04-15 09:17:46 +0200
committerMichal Simek <michal.simek@xilinx.com>2019-04-15 10:22:51 +0200
commite840decc1954521ff73bbc87b5b3ea36af1704d2 (patch)
treea85729774fe134ab737b88a9d66a40f3bcd2a081 /drivers/firmware
parentdrivers: Defer probe if firmware is not ready (diff)
downloadlinux-e840decc1954521ff73bbc87b5b3ea36af1704d2.tar.xz
linux-e840decc1954521ff73bbc87b5b3ea36af1704d2.zip
firmware: xilinx: Add fpga API's
This Patch Adds fpga API's to support the Bitstream loading by using firmware interface. Signed-off-by: Nava kishore Manne <nava.manne@xilinx.com> Reviewed-by: Moritz Fischer <mdf@kernel.org> Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Diffstat (limited to 'drivers/firmware')
-rw-r--r--drivers/firmware/xilinx/zynqmp.c45
1 files changed, 45 insertions, 0 deletions
diff --git a/drivers/firmware/xilinx/zynqmp.c b/drivers/firmware/xilinx/zynqmp.c
index 87a1d636c0dc..fd3d83745208 100644
--- a/drivers/firmware/xilinx/zynqmp.c
+++ b/drivers/firmware/xilinx/zynqmp.c
@@ -540,6 +540,49 @@ static int zynqmp_pm_reset_get_status(const enum zynqmp_pm_reset reset,
}
/**
+ * zynqmp_pm_fpga_load - Perform the fpga load
+ * @address: Address to write to
+ * @size: pl bitstream size
+ * @flags: Bitstream type
+ * -XILINX_ZYNQMP_PM_FPGA_FULL: FPGA full reconfiguration
+ * -XILINX_ZYNQMP_PM_FPGA_PARTIAL: FPGA partial reconfiguration
+ *
+ * This function provides access to pmufw. To transfer
+ * the required bitstream into PL.
+ *
+ * Return: Returns status, either success or error+reason
+ */
+static int zynqmp_pm_fpga_load(const u64 address, const u32 size,
+ const u32 flags)
+{
+ return zynqmp_pm_invoke_fn(PM_FPGA_LOAD, lower_32_bits(address),
+ upper_32_bits(address), size, flags, NULL);
+}
+
+/**
+ * zynqmp_pm_fpga_get_status - Read value from PCAP status register
+ * @value: Value to read
+ *
+ * This function provides access to the pmufw to get the PCAP
+ * status
+ *
+ * Return: Returns status, either success or error+reason
+ */
+static int zynqmp_pm_fpga_get_status(u32 *value)
+{
+ u32 ret_payload[PAYLOAD_ARG_CNT];
+ int ret;
+
+ if (!value)
+ return -EINVAL;
+
+ ret = zynqmp_pm_invoke_fn(PM_FPGA_GET_STATUS, 0, 0, 0, 0, ret_payload);
+ *value = ret_payload[1];
+
+ return ret;
+}
+
+/**
* zynqmp_pm_init_finalize() - PM call to inform firmware that the caller
* master has initialized its own power management
*
@@ -642,6 +685,8 @@ static const struct zynqmp_eemi_ops eemi_ops = {
.request_node = zynqmp_pm_request_node,
.release_node = zynqmp_pm_release_node,
.set_requirement = zynqmp_pm_set_requirement,
+ .fpga_load = zynqmp_pm_fpga_load,
+ .fpga_get_status = zynqmp_pm_fpga_get_status,
};
/**