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gerrit.devboardsforandroid.linaro.org / platform / external / u-boot / 9a6598daaf0d0681bd423196364b2e4e3959ebbc / . / board / gdsys / intip / init.S
blob: 1fc2a2f3e871fe4478b82e5228f218aa9210893c [file] [log] [blame]
Dirk Eibachab4c62c2009-07-27 08:49:48 +0200[diff] [blame]1/*
2 * (C) Copyright 2009
3 * Dirk Eibach, Guntermann & Drunck GmbH, eibach@gdsys.de
4 *
5 * Based on board/amcc/canyonlands/init.S
6 * (C) Copyright 2008
7 * Stefan Roese, DENX Software Engineering, sr@denx.de.
8 *
Wolfgang Denk3765b3e2013-10-07 13:07:26 +0200[diff] [blame]9 * SPDX-License-Identifier: GPL-2.0+
Dirk Eibachab4c62c2009-07-27 08:49:48 +0200[diff] [blame]10 */
11
Wolfgang Denk25ddd1f2010-10-26 14:34:52 +0200[diff] [blame]12#include <asm-offsets.h>
Dirk Eibachab4c62c2009-07-27 08:49:48 +0200[diff] [blame]13#include <ppc_asm.tmpl>
14#include <config.h>
Peter Tyser61f2b382010-04-12 22:28:07 -0500[diff] [blame]15#include <asm/mmu.h>
Dirk Eibachab4c62c2009-07-27 08:49:48 +0200[diff] [blame]16
17/**************************************************************************
18 * TLB TABLE
19 *
20 * This table is used by the cpu boot code to setup the initial tlb
21 * entries. Rather than make broad assumptions in the cpu source tree,
22 * this table lets each board set things up however they like.
23 *
24 * Pointer to the table is returned in r1
25 *
26 *************************************************************************/
27 .section .bootpg,"ax"
28 .globl tlbtab
29
30tlbtab:
31 tlbtab_start
32
33 /*
34 * BOOT_CS (FLASH) must be first. Before relocation SA_I can be off to
35 * use the speed up boot process. It is patched after relocation to
36 * enable SA_I
37 */
38 tlbentry(CONFIG_SYS_BOOT_BASE_ADDR, SZ_16M, CONFIG_SYS_BOOT_BASE_ADDR,
Stefan Roesecf6eb6d2010-04-14 13:57:18 +0200[diff] [blame]39 4, AC_RWX | SA_G) /* TLB 0 */
Dirk Eibachab4c62c2009-07-27 08:49:48 +0200[diff] [blame]40
41 /*
42 * TLB entries for SDRAM are not needed on this platform.
43 * They are dynamically generated in the SPD DDR(2) detection
44 * routine.
45 */
46
47#ifdef CONFIG_SYS_INIT_RAM_DCACHE
48 /* TLB-entry for init-ram in dcache (SA_I must be turned off!) */
49 tlbentry(CONFIG_SYS_INIT_RAM_ADDR, SZ_4K, CONFIG_SYS_INIT_RAM_ADDR,
Stefan Roesecf6eb6d2010-04-14 13:57:18 +0200[diff] [blame]50 0, AC_RWX | SA_G)
Dirk Eibachab4c62c2009-07-27 08:49:48 +0200[diff] [blame]51#endif
52
53 tlbentry(CONFIG_SYS_PCI_BASE, SZ_256M, 0x00000000, 0xC,
Stefan Roesecf6eb6d2010-04-14 13:57:18 +0200[diff] [blame]54 AC_RW | SA_IG)
Dirk Eibachab4c62c2009-07-27 08:49:48 +0200[diff] [blame]55 tlbentry(CONFIG_SYS_PCI_MEMBASE, SZ_256M, 0x20000000, 0xC,
Stefan Roesecf6eb6d2010-04-14 13:57:18 +0200[diff] [blame]56 AC_RW | SA_IG)
Dirk Eibachab4c62c2009-07-27 08:49:48 +0200[diff] [blame]57
58 /* TLB-entry for NVRAM */
59 tlbentry(CONFIG_SYS_NVRAM_BASE, SZ_1M, CONFIG_SYS_NVRAM_BASE, 4,
Stefan Roesecf6eb6d2010-04-14 13:57:18 +0200[diff] [blame]60 AC_RW | SA_IG)
Dirk Eibachab4c62c2009-07-27 08:49:48 +0200[diff] [blame]61
62 /* TLB-entry for UART */
63 tlbentry(CONFIG_SYS_UART_BASE, SZ_16K, CONFIG_SYS_UART_BASE, 4,
Stefan Roesecf6eb6d2010-04-14 13:57:18 +0200[diff] [blame]64 AC_RW | SA_IG)
Dirk Eibachab4c62c2009-07-27 08:49:48 +0200[diff] [blame]65
66 /* TLB-entry for IO */
67 tlbentry(CONFIG_SYS_IO_BASE, SZ_16K, CONFIG_SYS_IO_BASE, 4,
Stefan Roesecf6eb6d2010-04-14 13:57:18 +0200[diff] [blame]68 AC_RW | SA_IG)
Dirk Eibachab4c62c2009-07-27 08:49:48 +0200[diff] [blame]69
70 /* TLB-entry for OCM */
71 tlbentry(CONFIG_SYS_OCM_BASE, SZ_1M, 0x00000000, 4,
Stefan Roesecf6eb6d2010-04-14 13:57:18 +0200[diff] [blame]72 AC_RWX | SA_I)
Dirk Eibachab4c62c2009-07-27 08:49:48 +0200[diff] [blame]73
74 /* TLB-entry for Local Configuration registers => peripherals */
75 tlbentry(CONFIG_SYS_LOCAL_CONF_REGS, SZ_16M, CONFIG_SYS_LOCAL_CONF_REGS,
Stefan Roesecf6eb6d2010-04-14 13:57:18 +0200[diff] [blame]76 4, AC_RWX | SA_IG)
Dirk Eibachab4c62c2009-07-27 08:49:48 +0200[diff] [blame]77
78 /* AHB: Internal USB Peripherals (USB, SATA) */
79 tlbentry(CONFIG_SYS_AHB_BASE, SZ_1M, 0xbff00000, 4,
Stefan Roesecf6eb6d2010-04-14 13:57:18 +0200[diff] [blame]80 AC_RWX | SA_IG)
Dirk Eibachab4c62c2009-07-27 08:49:48 +0200[diff] [blame]81
82 tlbtab_end