upstream u-boot with additional patches for our devices/boards: https://lists.denx.de/pipermail/u-boot/2017-March/282789.html (AXP crashes) ; Gbit ethernet patch for some LIME2 revisions ; with SPI flash support
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u-boot/arch/arm/include/asm/arch-spear/spr_emi.h

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/*
* (C) Copyright 2009
* Ryan CHEN, ST Micoelectronics, ryan.chen@st.com
*
* 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 __SPEAR_EMI_H__
#define __SPEAR_EMI_H__
#ifdef CONFIG_SPEAR_EMI
struct emi_bank_regs {
u32 tap;
u32 tsdp;
u32 tdpw;
u32 tdpr;
u32 tdcs;
u32 control;
};
struct emi_regs {
struct emi_bank_regs bank_regs[CONFIG_SYS_MAX_FLASH_BANKS];
u32 tout;
u32 ack;
u32 irq;
};
#define EMI_ACKMSK 0x40
/* control register definitions */
#define EMI_CNTL_ENBBYTEW (1 << 2)
#define EMI_CNTL_ENBBYTER (1 << 3)
#define EMI_CNTL_ENBBYTERW (EMI_CNTL_ENBBYTER | EMI_CNTL_ENBBYTEW)
#endif
#endif