Merge pull request #14063 from dustin-crossman/pr/wifi_reserved_region

Support arbitrary storage alongside WiFi firmware in external storage on Cypress targets

Author: 0xc0170

connectivity/drivers/emac/TARGET_Cypress/COMPONENT_WHD/interface/whd_emac.cpp

@@ -27,10 +27,15 @@
 #include "events/mbed_shared_queues.h"
 #include "whd_wlioctl.h"
 #include "whd_buffer_api.h"
+#include "wiced_resource.h"
 #include "cybsp_wifi.h"
 #include "emac_eapol.h"
 #include "cy_result.h"
 
+#if defined(CY_EXT_WIFI_FW_STORAGE) && !MBED_CONF_TARGET_XIP_ENABLE
+#include "cy_ext_wifi_fw_reserved_region_bd.h"
+#endif /* defined(CY_EXT_WIFI_FW_STORAGE) && !MBED_CONF_TARGET_XIP_ENABLE */
+
 #define NULL_MAC(a)  ( ( ( ( (unsigned char *)a )[0] ) == 0 ) && \
                        ( ( ( (unsigned char *)a )[1] ) == 0 ) && \
                        ( ( ( (unsigned char *)a )[2] ) == 0 ) && \
@@ -112,7 +117,17 @@ bool WHD_EMAC::power_up()
             WHD_EMAC &emac_other = WHD_EMAC::get_instance(interface_type == WHD_STA_ROLE ? WHD_AP_ROLE :
                                                           WHD_STA_ROLE);
             if (!emac_other.powered_up) {
+#if defined(CY_EXT_WIFI_FW_STORAGE) && !MBED_CONF_TARGET_XIP_ENABLE
+                CyReservedRegionBlockDevice *reserved_region_bd = cy_get_ext_wifi_fw_reserved_region_bd();
+                reserved_region_bd->init();
+
+                extern whd_resource_source_t cy_ext_wifi_fw_resource_ops;
+                res = cybsp_wifi_init_primary_extended(&ifp /* OUT */, &cy_ext_wifi_fw_resource_ops, NULL, NULL);
+
+                reserved_region_bd->deinit();
+#else
                 res = cybsp_wifi_init_primary(&ifp /* OUT */);
+#endif /* defined(CY_EXT_WIFI_FW_STORAGE) && !MBED_CONF_TARGET_XIP_ENABLE */
             } else {
                 ifp = emac_other.ifp;
             }
@@ -295,4 +310,13 @@ extern "C"
         }
     }
 
+#if defined(CY_EXT_WIFI_FW_STORAGE) && !MBED_CONF_TARGET_XIP_ENABLE
+    resource_result_t platform_read_external_resource(const resource_hnd_t *resource, uint32_t offset, uint32_t maxsize, uint32_t *size, void *buffer)
+    {
+        CyReservedRegionBlockDevice *bd = cy_get_ext_wifi_fw_reserved_region_bd();
+        int status = bd->reserved_read(buffer, (mbed::bd_addr_t) resource->val.external_storage_context + offset, *size);
+        return (status == 0) ? RESOURCE_SUCCESS : RESOURCE_FILE_READ_FAIL;
+    }
+#endif /* defined(CY_EXT_WIFI_FW_STORAGE) && !MBED_CONF_TARGET_XIP_ENABLE */
+
 } // extern "C"

storage/kvstore/kv_config/filesystem/mbed_lib.json

@@ -37,6 +37,9 @@
     "target_overrides": {
         "MCU_PSOC6": {
             "rbp_internal_size": "7168"
+        },
+        "CY_EXTERNAL_WIFI_FW": {
+            "blockdevice": "other"
         }
     }
 }

storage/kvstore/kv_config/filesystem_no_rbp/mbed_lib.json

@@ -25,5 +25,10 @@
             "help": "Path for the working directory where the FileSystemStore stores the data",
             "value": "kvstore"
         }
+    },
+    "target_overrides": {
+        "CY_EXTERNAL_WIFI_FW": {
+            "blockdevice": "other"
+        }
     }
 }

storage/kvstore/kv_config/tdb_external/mbed_lib.json

@@ -25,6 +25,9 @@
     "target_overrides": {
         "MCU_PSOC6": {
             "rbp_internal_size": "7168"
+        },
+        "CY_EXTERNAL_WIFI_FW": {
+            "blockdevice": "other"
         }
     }
 }

storage/kvstore/kv_config/tdb_external_no_rbp/mbed_lib.json

@@ -13,5 +13,10 @@
             "help": "The default will set start address to address 0",
             "value": "0"
         }
+    },
+    "target_overrides": {
+        "CY_EXTERNAL_WIFI_FW": {
+            "blockdevice": "other"
+        }
     }
 }

targets/TARGET_Cypress/TARGET_PSOC6/TARGET_CY8CKIT064B0S2_4343W/device/COMPONENT_CM0P/TOOLCHAIN_ARM/cyb06xxa_cm0plus.sct

@@ -258,7 +258,7 @@ LR_SFLASH_RTOC_2 SFLASH_RTOC_2_START SFLASH_RTOC_2_SIZE
 ; Places the code in the Execute in Place (XIP) section. See the smif driver documentation for details.
 LR_EROM XIP_START XIP_SIZE
 {
-    .cy_xip +0
+    cy_xip +0
     {
         * (.cy_xip)
     }

targets/TARGET_Cypress/TARGET_PSOC6/TARGET_CY8CKIT064B0S2_4343W/device/COMPONENT_CM0P/TOOLCHAIN_GCC_ARM/cyb06xxa_cm0plus.ld

@@ -422,9 +422,11 @@ SECTIONS
     /* Places the code in the Execute in Place (XIP) section. See the smif driver
     *  documentation for details.
     */
-    .cy_xip :
+    cy_xip :
     {
+        __cy_xip_start = .;
         KEEP(*(.cy_xip))
+        __cy_xip_end = .;
     } > xip
 
 

targets/TARGET_Cypress/TARGET_PSOC6/TARGET_CY8CKIT064B0S2_4343W/device/COMPONENT_CM0P/TOOLCHAIN_IAR/cyb06xxa_cm0plus.icf

@@ -199,6 +199,8 @@ define block HEAP       with expanding size, alignment = 8, minimum size = __ICF
 define block HSTACK {block HEAP, block PROC_STACK, last block CSTACK};
 define block RO     {first section .intvec, readonly};
 
+define block cy_xip { section .cy_xip };
+
 /*-Initializations-*/
 initialize by copy { readwrite };
 do not initialize  { section .noinit, section .intvec_ram };
@@ -231,7 +233,7 @@ place at address (__ICFEDIT_region_IROM1_start__ + BOOT_HEADER_SIZE) { block RO
 ".cy_efuse" : place at start of IROM8_region  { section .cy_efuse };
 
 /* Execute in Place (XIP). See the smif driver documentation for details. */
-".cy_xip" : place at start of EROM1_region  { section .cy_xip };
+"cy_xip" : place at start of EROM1_region  { block cy_xip };
 
 /* RAM */
 place at start of IRAM1_region  { readwrite section .intvec_ram};

targets/TARGET_Cypress/TARGET_PSOC6/TARGET_CY8CKIT064B0S2_4343W/device/COMPONENT_CM4/TOOLCHAIN_ARM/cyb06xxa_cm4_dual.sct

@@ -268,7 +268,7 @@ LR_SFLASH_RTOC_2 SFLASH_RTOC_2_START SFLASH_RTOC_2_SIZE
 ; Places the code in the Execute in Place (XIP) section. See the smif driver documentation for details.
 LR_EROM XIP_START XIP_SIZE
 {
-    .cy_xip +0
+    cy_xip +0
     {
         * (.cy_xip)
     }

targets/TARGET_Cypress/TARGET_PSOC6/TARGET_CY8CKIT064B0S2_4343W/device/COMPONENT_CM4/TOOLCHAIN_GCC_ARM/cyb06xxa_cm4_dual.ld

@@ -419,9 +419,11 @@ SECTIONS
     /* Places the code in the Execute in Place (XIP) section. See the smif driver
     *  documentation for details.
     */
-    .cy_xip :
+    cy_xip :
     {
+        __cy_xip_start = .;
         KEEP(*(.cy_xip))
+        __cy_xip_end = .;
     } > xip