summaryrefslogtreecommitdiff
path: root/board/amcc/bluestone/init.S
blob: a1bf16804c8d1acdb7de1382484e0190c82a59cb (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
/*
 * Copyright (c) 2010, Applied Micro Circuits Corporation
 * Author: Tirumala R Marri <tmarri@apm.com>
 *
 * SPDX-License-Identifier:	GPL-2.0+ 
 */

#include <asm-offsets.h>
#include <ppc_asm.tmpl>
#include <config.h>
#include <asm/mmu.h>
#include <asm/ppc4xx.h>

/**************************************************************************
 * TLB TABLE
 *
 * This table is used by the cpu boot code to setup the initial tlb
 * entries. Rather than make broad assumptions in the cpu source tree,
 * this table lets each board set things up however they like.
 *
 *  Pointer to the table is returned in r1
 *
 *************************************************************************/
	.section .bootpg,"ax"
	.globl tlbtab

tlbtab:
	tlbtab_start

	/* TLB 0 */
	tlbentry(CONFIG_SYS_BOOT_BASE_ADDR, SZ_16M, CONFIG_SYS_BOOT_BASE_ADDR,
	4, AC_RWX | SA_G)

	/* TLB-entry for init-ram in dcache (SA_I must be turned off!) */
	tlbentry(CONFIG_SYS_INIT_RAM_ADDR, SZ_4K, CONFIG_SYS_INIT_RAM_ADDR,
			0, AC_RWX | SA_G)

	/* TLB-entry for OCM */
	tlbentry(CONFIG_SYS_OCM_BASE, SZ_64K, 0x00040000, 4,
			AC_RWX | SA_I)

	/* TLB-entry for Local Configuration registers => peripherals */
	tlbentry(CONFIG_SYS_PERIPHERAL_BASE, SZ_16K,
			CONFIG_SYS_PERIPHERAL_BASE, 4, AC_RWX | SA_IG)
	tlbtab_end