mirror of
https://github.com/smaeul/u-boot.git
synced 2025-11-04 05:50:17 +00:00
7065b7d466
Pre u-boot Flow:
1. User loads the u-boot image in flash
2. PBL/Configuration word is used to create LAW for Flash at 0xc0000000
(Please note that ISBC expects all these addresses, images to be
validated, entry point etc within 0 - 3.5G range)
3. ISBC validates the u-boot image, and passes control to u-boot
at 0xcffffffc.
Changes in u-boot:
1. Temporarily map CONFIG_SYS_MONITOR_BASE to the 1M
CONFIG_SYS_PBI_FLASH_WINDOW in AS=1.
(The CONFIG_SYS_PBI_FLASH_WINDOW is the address map for the flash
created by PBL/configuration word within 0 - 3.5G memory range. The
u-boot image at this address has been validated by ISBC code)
2. Remove TLB entries for 0 - 3.5G created by ISBC code
3. Remove the LAW entry for the CONFIG_SYS_PBI_FLASH_WINDOW created by
PBL/configuration word after switch to AS = 1
Signed-off-by: Ruchika Gupta <ruchika.gupta@freescale.com>
Signed-off-by: Kuldip Giroh <kuldip.giroh@freescale.com>
Acked-by: Wood Scott-B07421 <B07421@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
44 lines
1.3 KiB
C
44 lines
1.3 KiB
C
/*
|
|
* Copyright 2010-2011 Freescale Semiconductor, Inc.
|
|
*
|
|
* See file CREDITS for list of people who contributed to this
|
|
* project.
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License as
|
|
* published by the Free Software Foundation; either version 2 of
|
|
* the License, or (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
|
|
* MA 02111-1307 USA
|
|
*/
|
|
|
|
#ifndef __FSL_SECURE_BOOT_H
|
|
#define __FSL_SECURE_BOOT_H
|
|
|
|
/* Starting TLB number for the TLB entried for 3.5 G space created by ISBC */
|
|
#if defined(CONFIG_FSL_CORENET)
|
|
#define CONFIG_SYS_ISBC_START_TLB 3
|
|
#else
|
|
#define CONFIG_SYS_ISBC_START_TLB 0
|
|
#endif
|
|
|
|
/* Number fo TLB's created by ISBC */
|
|
#define CONFIG_SYS_ISBC_NUM_TLBS 5
|
|
|
|
#if defined(CONFIG_FSL_CORENET)
|
|
#define CONFIG_SYS_PBI_FLASH_BASE 0xc0000000
|
|
#else
|
|
#define CONFIG_SYS_PBI_FLASH_BASE 0xce000000
|
|
#endif
|
|
#define CONFIG_SYS_PBI_FLASH_WINDOW 0xcff80000
|
|
|
|
#endif
|