mirror of
https://github.com/brain-hackers/u-boot-brain
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83d290c56f
When U-Boot started using SPDX tags we were among the early adopters and there weren't a lot of other examples to borrow from. So we picked the area of the file that usually had a full license text and replaced it with an appropriate SPDX-License-Identifier: entry. Since then, the Linux Kernel has adopted SPDX tags and they place it as the very first line in a file (except where shebangs are used, then it's second line) and with slightly different comment styles than us. In part due to community overlap, in part due to better tag visibility and in part for other minor reasons, switch over to that style. This commit changes all instances where we have a single declared license in the tag as both the before and after are identical in tag contents. There's also a few places where I found we did not have a tag and have introduced one. Signed-off-by: Tom Rini <trini@konsulko.com>
82 lines
2.3 KiB
C
82 lines
2.3 KiB
C
/* SPDX-License-Identifier: GPL-2.0+ */
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/*
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* (C) Copyright 2008 Stefan Roese <sr@denx.de>, DENX Software Engineering
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*/
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#ifndef __EBI__
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#define __EBI__
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#include <common.h>
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#include <asm/io.h>
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#include "vct.h"
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#define EXT_DEVICE_CHANNEL_3 (0x30000000)
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#define EXT_DEVICE_CHANNEL_2 (0x20000000)
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#define EXT_DEVICE_CHANNEL_1 (0x10000000)
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#define EXT_CPU_ACCESS_ACTIVE (0x00000001)
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#define EXT_DMA_ACCESS_ACTIVE (1 << 14)
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#define EXT_CPU_IORDY_SL (0x00000001)
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#define EBI_CPU_WRITE (1 << 31)
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#define EBI_CPU_ID_SHIFT (28)
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#define EBI_CPU_ADDR_MASK ~(~0UL << EBI_CPU_ID_SHIFT)
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/* position of various bit slices in timing register EBI_DEV[01]_TIM1_RD1 */
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#define ADDR_LATCH_ENABLE 0
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#define ADDR_ACTIVATION 4
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#define CHIP_SELECT_START 8
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#define OUTPUT_ENABLE_START 12
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#define WAIT_TIME 28
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#define READ_DURATION 20
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/* position of various bit slices in timing register EBI_DEV[01]_TIM1_RD2 */
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#define OUTPUT_ENABLE_END 0
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#define CHIP_SELECT_END 4
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#define ADDR_DEACTIVATION 8
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#define RECOVER_TIME 12
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#define ACK_TIME 20
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/* various bits in configuration register EBI_DEV[01]_CONFIG1 */
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#define EBI_EXTERNAL_DATA_8 (1 << 8)
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#define EBI_EXT_ADDR_SHIFT (1 << 22)
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#define EBI_EXTERNAL_DATA_16 EBI_EXT_ADDR_SHIFT
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#define EBI_CHIP_SELECT_1 0x2
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#define EBI_CHIP_SELECT_2 0x4
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#define EBI_BUSY_EN_RD (1 << 12)
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#define DIR_ACCESS_WRITE (1 << 20)
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#define DIR_ACCESS_MASK (1 << 20)
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/* various bits in configuration register EBI_DEV[01]_CONFIG2 */
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#define ADDRESS_INCREMENT_ON 0x0
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#define ADDRESS_INCREMENT_OFF 0x100
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#define QUEUE_LENGTH_1 0x40
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#define QUEUE_LENGTH_2 0x80
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#define QUEUE_LENGTH_3 0xC0
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#define QUEUE_LENGTH_4 0
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#define CPU_TRANSFER_SIZE_32 0
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#define CPU_TRANSFER_SIZE_16 0x10
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#define CPU_TRANSFER_SIZE_8 0x20
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#define READ_ENDIANNESS_ABCD 0
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#define READ_ENDIANNESS_DCBA 0x4
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#define READ_ENDIANNESS_BADC 0x8
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#define READ_ENDIANNESS_CDAB 0xC
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#define WRITE_ENDIANNESS_ABCD 0
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#define WRITE_ENDIANNESS_DCBA 0x1
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#define WRITE_ENDIANNESS_BADC 0x2
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#define WRITE_ENDIANNESS_CDAB 0x3
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/* various bits in configuration register EBI_CTRL_SIG_ACTLV */
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#define IORDY_ACTIVELEVEL_HIGH (1 << 14)
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#define ALE_ACTIVELEVEL_HIGH (1 << 8)
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/* bits in register EBI_SIG_LEVEL */
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#define IORDY_LEVEL_MASK 1
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static inline void ebi_wait(void)
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{
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while (reg_read(EBI_STATUS(EBI_BASE)) & EXT_CPU_ACCESS_ACTIVE)
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; /* wait */
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}
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#endif
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