Aarch64 support for FDT fixups.

IDE/XilinxSDK/README.md

@@ -237,8 +237,8 @@ Successfully ran Hello World application
 6. Build “boot.bin” image:
     * `bootgen -image boot.bif -arch zynqmp -o i BOOT.BIN -w`
 
-Note: To generate a report of a boot.bin use the `bootgen_utility`:
-`bootgen_utility -arch zynqmp -bin boot.bin -out boot.bin.txt`
+Note: To generate a report of a boot.bin use the `bootgen_utility` or after 2022.1 use `bootgen -read`:
+`bootgen -read -arch zynqmp -bin boot.bin -out boot.bin.txt`
 
 ## Post Quantum
 

hal/zynq.c

@@ -1109,6 +1109,13 @@ void* hal_get_dts_address(void)
 {
     return (void*)WOLFBOOT_DTS_BOOT_ADDRESS;
 }
+
+int hal_dts_fixup(void* dts_addr)
+{
+    /* place FDT fixup specific to ZynqMP here */
+    //fdt_set_boot_cpuid_phys(buf, fdt_boot_cpuid_phys(fdt));
+    return 0;
+}
 #endif
 
 

src/boot_aarch64.c

@@ -67,6 +67,16 @@ void boot_entry_C(void)
     main();
 }
 
+
+#ifdef MMU
+int __attribute((weak))  hal_dts_fixup(void* dts_addr)
+{
+    (void)dts_addr;
+    return 0;
+}
+#endif
+
+
 /* This is the main loop for the bootloader.
  *
  * It performs the following actions:
@@ -80,6 +90,10 @@ void RAMFUNCTION do_boot(const uint32_t *app_offset, const uint32_t* dts_offset)
 void RAMFUNCTION do_boot(const uint32_t *app_offset)
 #endif
 {
+#ifdef MMU
+    hal_dts_fixup((uint32_t*)dts_offset);
+#endif
+
 	/* Set application address via x4 */
 	asm volatile("mov x4, %0" : : "r"(app_offset));