mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-07-10 05:06:16 +09:00
5ffa88eca7
For the powerpc processors with SRIO interface, boot location can be configured from SRIO1 or SRIO2 by RCW. The processor booting from SRIO can do without flash for u-boot image. The image can be fetched from another processor's memory space by SRIO link connected between them. The processor boots from SRIO is slave, the processor boots from normal flash memory space and can help slave to boot from its memory space is master. They are different environments and requirements: master: 1. NOR flash for its own u-boot image, ucode and ENV space. 2. Slave's u-boot image in master NOR flash. 3. Normally boot from local NOR flash. 4. Configure SRIO switch system if needed. slave: 1. Just has EEPROM for RCW. No flash for u-boot image, ucode and ENV. 2. Boot location should be set to SRIO1 or SRIO2 by RCW. 3. RCW should configure the SerDes, SRIO interfaces correctly. 4. Slave must be powered on after master's boot. For the master module, need to finish these processes: 1. Initialize the SRIO port and address space. 2. Set inbound SRIO windows covered slave's u-boot image stored in master's NOR flash. 3. Master's u-boot image should be generated specifically by make xxxx_SRIOBOOT_MASTER_config 4. Master must boot first, and then slave can be powered on. Signed-off-by: Liu Gang <Gang.Liu@freescale.com> Signed-off-by: Shaohui Xie <Shaohui.Xie@freescale.com>
62 lines
1.5 KiB
C
62 lines
1.5 KiB
C
/*
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* Copyright 2011-2012 Freescale Semiconductor, Inc.
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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#ifndef _FSL_SRIO_H_
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#define _FSL_SRIO_H_
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enum atmu_size {
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ATMU_SIZE_4K = 0xb,
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ATMU_SIZE_8K,
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ATMU_SIZE_16K,
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ATMU_SIZE_32K,
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ATMU_SIZE_64K,
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ATMU_SIZE_128K,
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ATMU_SIZE_256K,
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ATMU_SIZE_512K,
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ATMU_SIZE_1M,
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ATMU_SIZE_2M,
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ATMU_SIZE_4M,
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ATMU_SIZE_8M,
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ATMU_SIZE_16M,
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ATMU_SIZE_32M,
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ATMU_SIZE_64M,
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ATMU_SIZE_128M,
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ATMU_SIZE_256M,
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ATMU_SIZE_512M,
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ATMU_SIZE_1G,
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ATMU_SIZE_2G,
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ATMU_SIZE_4G,
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ATMU_SIZE_8G,
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ATMU_SIZE_16G,
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ATMU_SIZE_32G,
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ATMU_SIZE_64G,
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};
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#define atmu_size_mask(sz) (__ilog2_u64(sz) - 1)
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#define atmu_size_bytes(x) (1ULL << ((x & 0x3f) + 1))
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extern void srio_init(void);
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#ifdef CONFIG_SRIOBOOT_MASTER
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extern void srio_boot_master(void);
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#endif
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#endif
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