Support XiZi_AIoT

Ubiquitous/XiZi_AIoT/softkernel/memory/kalloc.c

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+/*
+ * Copyright (c) 2020 AIIT XUOS Lab
+ * XiUOS is licensed under Mulan PSL v2.
+ * You can use this software according to the terms and conditions of the Mulan PSL v2.
+ * You may obtain a copy of Mulan PSL v2 at:
+ *        http://license.coscl.org.cn/MulanPSL2
+ * THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
+ * EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
+ * MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
+ * See the Mulan PSL v2 for more details.
+ */
+
+/**
+ * @file:    kalloc.c
+ * @brief:   the general management of system memory
+ * @version: 3.0
+ * @author:  AIIT XUOS Lab
+ * @date:    2023/8/28
+ */
+/*************************************************
+File name: kalloc.c
+Description: the general management of system memory
+Others:
+History:
+1. Date: 2023-08-28
+Author: AIIT XUOS Lab
+Modification:
+1. first version
+*************************************************/
+#include "kalloc.h"
+#include "assert.h"
+
+#include "actracer.h"
+#include "buddy.h"
+
+struct KBuddy user_phy_freemem_buddy;
+struct KBuddy kern_virtmem_buddy;
+
+extern uint32_t kernel_data_end[];
+bool module_phymem_init()
+{
+    LOG_PRINTF("Organizing free memory...\n");
+    uint32_t kern_freemem_start = V2P(&kernel_data_end);
+    uint32_t kern_freemem_end = PHY_USER_FREEMEM_BASE;
+    uint32_t user_freemem_start = PHY_USER_FREEMEM_BASE;
+    uint32_t user_freemem_end = PHY_MEM_STOP;
+    KBuddySysInit(&kern_virtmem_buddy, kern_freemem_start, kern_freemem_end);
+    KBuddySysInit(&user_phy_freemem_buddy, user_freemem_start, user_freemem_end);
+    LOG_PRINTF("Free memory organized done.\n");
+    return true;
+}
+
+char* kalloc(uint32_t size)
+{
+    char* mem_alloc = KBuddyAlloc(&kern_virtmem_buddy, size);
+    if (mem_alloc == NULL) {
+        return NULL;
+    }
+    mem_alloc = P2V(mem_alloc);
+    if ((uintptr_t)mem_alloc < KERN_MEM_BASE) {
+        DEBUG("Error Alloc: %x by size: %d (Caused by double free)\n", mem_alloc, size);
+    }
+    memset(mem_alloc, 0, size);
+    return mem_alloc;
+}
+
+bool kfree(char* vaddr)
+{
+    return KBuddyFree(&kern_virtmem_buddy, V2P_WO(vaddr));
+}
+
+char* raw_alloc(uint32_t size)
+{
+    char* mem_alloc = KBuddyAlloc(&user_phy_freemem_buddy, size);
+    if (mem_alloc == NULL) {
+        return NULL;
+    }
+    return mem_alloc;
+}
+
+bool raw_free(char* paddr)
+{
+    return KBuddyFree(&user_phy_freemem_buddy, paddr);
+}
+
+void show_phymem_info()
+{
+    KFreePagesInfo(&user_phy_freemem_buddy);
+}