Merge branch 'master' of https://gitlab.denx.de/u-boot/custodians/u-boot-spi

[oweals/u-boot.git] / drivers / firmware / firmware-zynqmp.c

diff --git a/drivers/firmware/firmware-zynqmp.c b/drivers/firmware/firmware-zynqmp.c
index d1fff328e8575ccd119b66f0bbda86efa7774a4a..c37642569ddaf27453ab21a63068dd56d78002e9 100644 (file)
--- a/drivers/firmware/firmware-zynqmp.c
+++ b/drivers/firmware/firmware-zynqmp.c
@@ -7,6 +7,7 @@
 
 #include <common.h>
 #include <dm.h>
+#include <zynqmp_firmware.h>
 
 #if defined(CONFIG_ZYNQMP_IPI)
 #include <mailbox.h>
@@ -48,6 +49,14 @@ static int ipi_req(const u32 *req, size_t req_len, u32 *res, size_t res_maxlen)
        return ret;
 }
 
+static int send_req(const u32 *req, size_t req_len, u32 *res, size_t res_maxlen)
+{
+       if (IS_ENABLED(CONFIG_SPL_BUILD) || current_el() == 3)
+               return ipi_req(req, req_len, res, res_maxlen);
+
+       return xilinx_pm_request(req[0], 0, 0, 0, 0, res);
+}
+
 unsigned int zynqmp_firmware_version(void)
 {
        int ret;
@@ -60,16 +69,9 @@ unsigned int zynqmp_firmware_version(void)
         * asking PMUFW again.
         **/
        if (pm_api_version == ZYNQMP_PM_VERSION_INVALID) {
-               if (IS_ENABLED(CONFIG_SPL_BUILD)) {
-                       const u32 request[] = { PM_GET_API_VERSION };
-
-                       ret = ipi_req(request, ARRAY_SIZE(request),
-                                     ret_payload, 2);
-               } else {
-                       ret = invoke_smc(ZYNQMP_SIP_SVC_GET_API_VERSION, 0, 0,
-                                        0, 0, ret_payload);
-               };
+               const u32 request[] = { PM_GET_API_VERSION };
 
+               ret = send_req(request, ARRAY_SIZE(request), ret_payload, 2);
                if (ret)
                        panic("PMUFW is not found - Please load it!\n");
 
@@ -82,21 +84,45 @@ unsigned int zynqmp_firmware_version(void)
        return pm_api_version;
 };
 
+/**
+ * Send a configuration object to the PMU firmware.
+ *
+ * @cfg_obj: Pointer to the configuration object
+ * @size:    Size of @cfg_obj in bytes
+ */
+void zynqmp_pmufw_load_config_object(const void *cfg_obj, size_t size)
+{
+       const u32 request[] = {
+               PM_SET_CONFIGURATION,
+               (u32)((u64)cfg_obj)
+       };
+       u32 response;
+       int err;
+
+       printf("Loading new PMUFW cfg obj (%ld bytes)\n", size);
+
+       err = send_req(request, ARRAY_SIZE(request), &response, 1);
+       if (err)
+               panic("Cannot load PMUFW configuration object (%d)\n", err);
+       if (response != 0)
+               panic("PMUFW returned 0x%08x status!\n", response);
+}
+
 static int zynqmp_power_probe(struct udevice *dev)
 {
-       int ret = 0;
+       int ret;
 
        debug("%s, (dev=%p)\n", __func__, dev);
 
        ret = mbox_get_by_name(dev, "tx", &zynqmp_power.tx_chan);
        if (ret) {
-               debug("%s, cannot tx mailbox\n", __func__);
+               debug("%s: Cannot find tx mailbox\n", __func__);
                return ret;
        }
 
        ret = mbox_get_by_name(dev, "rx", &zynqmp_power.rx_chan);
        if (ret) {
-               debug("%s, cannot rx mailbox\n", __func__);
+               debug("%s: Cannot find rx mailbox\n", __func__);
                return ret;
        }
 
@@ -121,6 +147,37 @@ U_BOOT_DRIVER(zynqmp_power) = {
 };
 #endif
 
+int __maybe_unused xilinx_pm_request(u32 api_id, u32 arg0, u32 arg1, u32 arg2,
+                                    u32 arg3, u32 *ret_payload)
+{
+       /*
+        * Added SIP service call Function Identifier
+        * Make sure to stay in x0 register
+        */
+       struct pt_regs regs;
+
+       if (current_el() == 3) {
+               printf("%s: Can't call SMC from EL3 context\n", __func__);
+               return -EPERM;
+       }
+
+       regs.regs[0] = PM_SIP_SVC | api_id;
+       regs.regs[1] = ((u64)arg1 << 32) | arg0;
+       regs.regs[2] = ((u64)arg3 << 32) | arg2;
+
+       smc_call(&regs);
+
+       if (ret_payload) {
+               ret_payload[0] = (u32)regs.regs[0];
+               ret_payload[1] = upper_32_bits(regs.regs[0]);
+               ret_payload[2] = (u32)regs.regs[1];
+               ret_payload[3] = upper_32_bits(regs.regs[1]);
+               ret_payload[4] = (u32)regs.regs[2];
+       }
+
+       return regs.regs[0];
+}
+
 static const struct udevice_id zynqmp_firmware_ids[] = {
        { .compatible = "xlnx,zynqmp-firmware" },
        { .compatible = "xlnx,versal-firmware"},
@@ -130,6 +187,5 @@ static const struct udevice_id zynqmp_firmware_ids[] = {
 U_BOOT_DRIVER(zynqmp_firmware) = {
        .id = UCLASS_FIRMWARE,
        .name = "zynqmp-firmware",
-       .probe = dm_scan_fdt_dev,
        .of_match = zynqmp_firmware_ids,
 };