GK SDK 源码库: XMIPCLinuxV100R005C00SPC030 (kernel/tools/open_source excluded)

2026-09-06 03:52:57 +08:00
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+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * (C) Copyright 2008
+ * Sergei Poselenov, Emcraft Systems, sposelenov@emcraft.com.
+ *
+ * Copyright 2008 Freescale Semiconductor, Inc.
+ *
+ * (C) Copyright 2000
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ */
+
+#include <common.h>
+#include <asm/fsl_law.h>
+#include <asm/mmu.h>
+
+/*
+ * LAW(Local Access Window) configuration:
+ *
+ * 0x0000_0000	   0x2fff_ffff	   DDR			   512M
+ * 0x8000_0000	   0x9fff_ffff	   PCI1 MEM		   512M
+ * 0xc000_0000	   0xc00f_ffff	   FPGA			   1M
+ * 0xc800_0000	   0xcbff_ffff	   LIME			   64M
+ * 0xe000_0000	   0xe00f_ffff	   CCSR			   1M (mapped by CCSRBAR)
+ * 0xe200_0000	   0xe2ff_ffff	   PCI1 IO		   16M
+ * 0xfc00_0000	   0xffff_ffff	   FLASH		   64M
+ *
+ * Notes:
+ *    CCSRBAR and L2-as-SRAM don't need a configured Local Access Window.
+ *    If flash is 8M at default position (last 8M), no LAW needed.
+ */
+
+struct law_entry law_table[] = {
+	SET_LAW(CONFIG_SYS_DDR_SDRAM_BASE, LAW_SIZE_512M, LAW_TRGT_IF_DDR),
+	SET_LAW(CONFIG_SYS_LBC_FLASH_BASE, LAW_SIZE_64M, LAW_TRGT_IF_LBC),
+#if defined(CONFIG_SYS_FPGA_BASE)
+	SET_LAW(CONFIG_SYS_FPGA_BASE, LAW_SIZE_1M, LAW_TRGT_IF_LBC),
+#endif
+	SET_LAW(CONFIG_SYS_LIME_BASE, LAW_SIZE_64M, LAW_TRGT_IF_LBC),
+};
+
+int num_law_entries = ARRAY_SIZE(law_table);