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

2026-09-06 03:52:57 +08:00
commit b1928b41c0
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+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * 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	0x0fff_ffff	DDR			256M
+ * 0x8000_0000	0x9fff_ffff	PCI1 MEM		512M
+ * 0xa000_0000	0xbfff_ffff	PCIe MEM		512M
+ * 0xe000_0000	0xe000_ffff	CCSR			1M
+ * 0xe200_0000	0xe27f_ffff	PCI1 IO			8M
+ * 0xe280_0000	0xe2ff_ffff	PCIe IO			8M
+ * 0xec00_0000	0xefff_ffff	FLASH (2nd bank)	64M
+ * 0xf000_0000	0xf7ff_ffff	SDRAM			128M
+ * 0xf8b0_0000	0xf80f_ffff	EEPROM			1M
+ * 0xff80_0000	0xffff_ffff	FLASH (boot bank)	8M
+ *
+ * If swapped CS0/CS6 via JP12+SW2.8:
+ * 0xef80_0000	0xefff_ffff	FLASH (2nd bank)	8M
+ * 0xfc00_0000	0xffff_ffff	FLASH (boot bank)	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[] = {
+#ifdef CONFIG_SYS_ALT_BOOT
+	SET_LAW(CONFIG_SYS_ALT_FLASH, LAW_SIZE_8M, LAW_TRGT_IF_LBC),
+#else
+	SET_LAW(CONFIG_SYS_ALT_FLASH, LAW_SIZE_64M, LAW_TRGT_IF_LBC),
+#endif
+#ifndef CONFIG_SPD_EEPROM
+	SET_LAW(CONFIG_SYS_DDR_SDRAM_BASE, LAW_SIZE_256M, LAW_TRGT_IF_DDR),
+#endif
+#ifdef CONFIG_SYS_LBC_SDRAM_BASE
+	/* LBC window - maps 256M 0xf0000000 -> 0xffffffff */
+	SET_LAW(CONFIG_SYS_LBC_SDRAM_BASE, LAW_SIZE_256M, LAW_TRGT_IF_LBC),
+#else
+	/* LBC window - maps 128M 0xf8000000 -> 0xffffffff */
+	SET_LAW(CONFIG_SYS_EPLD_BASE, LAW_SIZE_128M, LAW_TRGT_IF_LBC),
+#endif
+};
+
+int num_law_entries = ARRAY_SIZE(law_table);