Mapping RAM Disk

lupyuen2 · Jul 20, 2023 · 70a7d02 · 70a7d02
1 parent 98e713f
commit 70a7d02
Showing 1 changed file with 9 additions and 0 deletions.
diff --git a/arch/risc-v/src/qemu-rv/qemu_rv_mm_init.c b/arch/risc-v/src/qemu-rv/qemu_rv_mm_init.c
@@ -269,6 +269,15 @@ void qemu_rv_kernel_mappings(void)
   binfo("map kernel data\n");
   map_region(KSRAM_START, KSRAM_START, KSRAM_SIZE, MMU_KDATA_FLAGS);
 
+  /* Added RAM Disk */
+  //// From nuttx/boards/risc-v/litex/arty_a7/include/board_memorymap.h
+  /* ramdisk (RW) */
+  extern uint8_t          __ramdisk_start[];
+  extern uint8_t          __ramdisk_size[];
+  _info("map RAM Disk\n");
+  map_region((uintptr_t)__ramdisk_start, (uintptr_t)__ramdisk_start, (uintptr_t)__ramdisk_size, MMU_KDATA_FLAGS);
+  _info("map RAM Disk done\n");
+
 #ifdef CONFIG_ARCH_MMU_TYPE_SV39
 
   /* Connect the L1 and L2 page tables for the kernel text and data */