translation_table.s

自学ZedBoard：使用IP通过ARM PS访问FPGA（源代码）

/* $Id: translation_table.s,v 1.1.4.1 2011/10/24 09:35:19 sadanan Exp $*/
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/**
* @file translation_table.s
*
* This file contains the initialization for the MMU table in RAM
* needed by the Cortex A9 processor
*
* <pre>
* MODIFICATION HISTORY:
*
* Ver   Who  Date     Changes
* ----- ---- -------- ---------------------------------------------------
* 1.00a ecm  10/20/09 Initial version
* 3.04a sdm  01/13/12 Updated MMU table to mark DDR memory as Shareable
* </pre>
*
* @note
*
* None.
*
******************************************************************************/
	.globl  MMUTable

	.section .mmu_tbl,"aS"

MMUTable:
	/* Each table entry occupies one 32-bit word and there are
	 * 4096 entries, so the entire table takes up 16KB.
	 * Each entry covers a 1MB section.
	 */

.set SECT, 0

.rept	0x0400			/* 0x00000000 - 0x3fffffff (DDR Cacheable) */
.word	SECT + 0x15de6		/* S=b1 TEX=b101 AP=b11, Domain=b1111, C=b0, B=b1 */
.set	SECT, SECT+0x100000
.endr

.rept	0x0400			/* 0x40000000 - 0x7fffffff (FPGA slave0) */
.word	SECT + 0xc02		/* S=b0 TEX=b000 AP=b11, Domain=b0, C=b0, B=b0 */
.set	SECT, SECT+0x100000
.endr

.rept	0x0400			/* 0x80000000 - 0xbfffffff (FPGA slave1) */
.word	SECT + 0xc02		/* S=b0 TEX=b000 AP=b11, Domain=b0, C=b0, B=b0 */
.set	SECT, SECT+0x100000
.endr

.rept	0x0200			/* 0xc0000000 - 0xdfffffff (unassigned/reserved).
				 * Generates a translation fault if accessed */
.word	SECT + 0x0		/* S=b0 TEX=b000 AP=b00, Domain=b0, C=b0, B=b0 */
.set	SECT, SECT+0x100000
.endr

.rept	0x0020			/* 0xe0000000 - 0xe1ffffff (Memory mapped devices)
				 * UART/USB/IIC/SPI/CAN/GEM/GPIO/QSPI/SD/NAND */
.word	SECT + 0xc02		/* S=b0 TEX=b000 AP=b11, Domain=b0, C=b0, B=b0 */
.set	SECT, SECT+0x100000
.endr

.rept	0x0020			/* 0xe2000000 - 0xe3ffffff (NOR) */
.word	SECT + 0xc02		/* S=b0 TEX=b000 AP=b11, Domain=b0, C=b0, B=b0 */
.set	SECT, SECT+0x100000
.endr

.rept	0x0020			/* 0xe4000000 - 0xe5ffffff (SRAM) */
.word	SECT + 0xc0e		/* S=b0 TEX=b000 AP=b11, Domain=b0, C=b1, B=b1 */
.set	SECT, SECT+0x100000
.endr

.rept	0x0120			/* 0xe6000000 - 0xf7ffffff (unassigned/reserved).
				 * Generates a translation fault if accessed */
.word	SECT + 0x0		/* S=b0 TEX=b000 AP=b00, Domain=b0, C=b0, B=b0 */
.set	SECT, SECT+0x100000
.endr

.rept	0x0010			/* 0xf8000000 - 0xf8ffffff (AMBA APB Peripherals) */
.word	SECT + 0xc02		/* S=b0 TEX=b010 AP=b11, Domain=b0, C=b0, B=b0 */
.set	SECT, SECT+0x100000
.endr

.rept	0x0030			/* 0xf9000000 - 0xfbffffff (unassigned/reserved).
				 * Generates a translation fault if accessed */
.word	SECT + 0x0		/* S=b0 TEX=b000 AP=b00, Domain=b0, C=b0, B=b0 */
.set	SECT, SECT+0x100000
.endr

.rept	0x003f			/* 0xfc000000 - 0xffefffff (Linear QSPI - XIP) */
.word	SECT + 0xc0a		/* S=b0 TEX=b000 AP=b11, Domain=b0, C=b1, B=b1 */
.set	SECT, SECT+0x100000
.endr

				/* 256K OCM when mapped to high address space
				 * inner-cacheable */
.word	SECT + 0x4c0e		/* S=b0 TEX=b100 AP=b11, Domain=b0, C=b1, B=b1 */
.set	SECT, SECT+0x100000

.end