[libcpu-riscv]: [surpport SMP]: Fix issues with non-standard formatting

Fix issues with non-standard formatting.
The page size defined by RT_HW_PAGE_END has been changed from 256MB to 128MB,
as the default physical memory size when QEMU starts is only 128MB.

Signed-off-by: Mengchen Teng <teng_mengchen@163.com>

Author: Tm-C-mT

bsp/qemu-virt64-riscv/driver/board.h

@@ -15,17 +15,17 @@
 
 extern unsigned int __bss_start;
 extern unsigned int __bss_end;
-extern unsigned int _end;
+
 #ifndef RT_USING_SMART
 #define KERNEL_VADDR_START 0x0
 #endif
 
 #define VIRT64_SBI_MEMSZ (0x200000)
 
-#define RT_HW_HEAP_BEGIN ((void *)&_end)
+#define RT_HW_HEAP_BEGIN ((void *)&__bss_end)
 #define RT_HW_HEAP_END   ((void *)(RT_HW_HEAP_BEGIN + 64 * 1024 * 1024))
 #define RT_HW_PAGE_START RT_HW_HEAP_END
-#define RT_HW_PAGE_END   ((void *)(KERNEL_VADDR_START + (256 * 1024 * 1024 - VIRT64_SBI_MEMSZ)))
+#define RT_HW_PAGE_END   ((void *)(KERNEL_VADDR_START + (128 * 1024 * 1024 - VIRT64_SBI_MEMSZ)))
 
 void rt_hw_board_init(void);
 void rt_init_user_mem(struct rt_thread *thread, const char *name,

bsp/qemu-virt64-riscv/link.lds

@@ -136,32 +136,32 @@ SECTIONS
         *(.scommon)
     } > SRAM
 
-    .bss :
-    {
-        *(.bss)
-        *(.bss.*)
-        *(.dynbss)
-        *(COMMON)
-    __bss_end = .;
-    } > SRAM
-
     .percpu (NOLOAD) :
     {
         /* Align for MMU early map */
-        . = ALIGN(1<<(12+9));
+        . = ALIGN(0x200000);
         PROVIDE(__percpu_start = .);
 
         *(.percpu)
 
         /* Align for MMU early map */
-       . = ALIGN(1<<(12+9));
+       . = ALIGN(0x200000);
 
         PROVIDE(__percpu_end = .);
 
         /* Clone the area */
         . = __percpu_end + (__percpu_end - __percpu_start) * (RT_CPUS_NR - 1);
         PROVIDE(__percpu_real_end = .);
     } > SRAM
+    
+    .bss :
+    {
+        *(.bss)
+        *(.bss.*)
+        *(.dynbss)
+        *(COMMON)
+    __bss_end = .;
+    } > SRAM
 
     _end = .;
 

bsp/qemu-virt64-riscv/link_smart.lds

@@ -137,25 +137,16 @@ SECTIONS
         *(.scommon)
     } > SRAM
 
-    .bss :
-    {
-        *(.bss)
-        *(.bss.*)
-        *(.dynbss)
-        *(COMMON)
-    __bss_end = .;
-    } > SRAM
-    
-         .percpu (NOLOAD) :
+    .percpu (NOLOAD) :
     {
         /* Align for MMU early map */
-        . = ALIGN(1<<(12+9));
+        . = ALIGN(0x200000);
         PROVIDE(__percpu_start = .);
 
         *(.percpu)
 
         /* Align for MMU early map */
-        . = ALIGN(1<<(12+9));
+        . = ALIGN(0x200000);
 
         PROVIDE(__percpu_end = .);
 
@@ -164,6 +155,15 @@ SECTIONS
         PROVIDE(__percpu_real_end = .);
     } > SRAM
 
+    .bss :
+    {
+        *(.bss)
+        *(.bss.*)
+        *(.dynbss)
+        *(COMMON)
+    __bss_end = .;
+    } > SRAM
+
     _end = .;
 
     /* Stabs debugging sections.  */

libcpu/risc-v/common64/mmu.c

@@ -860,10 +860,6 @@ void rt_hw_mmu_setup(rt_aspace_t aspace, struct mem_desc *mdesc, int desc_nr)
 
 #define SATP_BASE ((rt_ubase_t)SATP_MODE << SATP_MODE_OFFSET)
 
-extern unsigned int __bss_end;
-#if defined(RT_USING_SMP) && defined(ARCH_MM_MMU)
-extern unsigned int __percpu_real_end;
-#endif
 /**
  * @brief Early memory setup function for hardware initialization.
  *