mirror of
https://git.codelinaro.org/clo/qsdk/oss/boot/u-boot-2016.git
synced 2025-12-10 07:44:53 +01:00
aee2b6dbdd
This change enables the flash driver on u-boot for the AP152 target. Change-Id: I9778adf4a4d347fdcce16fbfede87f765302595c Signed-off-by: Prabhu Jayakumar <pjayak@codeaurora.org>
53 lines
1.5 KiB
C
53 lines
1.5 KiB
C
/*
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* Copyright (c) 2016 The Linux Foundation. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 and
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* only version 2 as published by the Free Software Foundation.
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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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*/
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#ifndef _ATH_FLASH_H
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#define _ATH_FLASH_H
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#define display(_x)
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/*
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* primitives
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*/
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#define ath_be_msb(_val, _i) (((_val) & (1 << (7 - _i))) >> (7 - _i))
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#define ath_spi_bit_banger(_byte) do { \
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int i; \
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for(i = 0; i < 8; i++) { \
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ath_reg_wr_nf(ATH_SPI_WRITE, \
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ATH_SPI_CE_LOW | ath_be_msb(_byte, i)); \
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ath_reg_wr_nf(ATH_SPI_WRITE, \
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ATH_SPI_CE_HIGH | ath_be_msb(_byte, i)); \
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} \
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} while (0)
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#define ath_spi_go() do { \
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ath_reg_wr_nf(ATH_SPI_WRITE, ATH_SPI_CE_LOW); \
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ath_reg_wr_nf(ATH_SPI_WRITE, ATH_SPI_CS_DIS); \
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} while (0)
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#define ath_spi_send_addr(__a) do { \
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ath_spi_bit_banger(((__a & 0xff0000) >> 16)); \
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ath_spi_bit_banger(((__a & 0x00ff00) >> 8)); \
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ath_spi_bit_banger(__a & 0x0000ff); \
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} while (0)
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#define ath_spi_delay_8() ath_spi_bit_banger(0)
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#define ath_spi_done() ath_reg_wr_nf(ATH_SPI_FS, 0)
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extern unsigned long flash_get_geom (flash_info_t *flash_info);
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#endif /* _ATH_FLASH_H */
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