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>
41 lines
956 B
C
41 lines
956 B
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (C) 2016 Stefan Roese <sr@denx.de>
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*/
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#include <common.h>
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#include <asm/io.h>
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#include <asm/pnp_def.h>
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#define WINBOND_ENTRY_KEY 0x87
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#define WINBOND_EXIT_KEY 0xaa
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/* Enable configuration: pass entry key '0x87' into index port dev twice */
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static void pnp_enter_conf_state(u16 dev)
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{
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u16 port = dev >> 8;
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outb(WINBOND_ENTRY_KEY, port);
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outb(WINBOND_ENTRY_KEY, port);
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}
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/* Disable configuration: pass exit key '0xAA' into index port dev */
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static void pnp_exit_conf_state(u16 dev)
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{
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u16 port = dev >> 8;
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outb(WINBOND_EXIT_KEY, port);
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}
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/* Bring up early serial debugging output before the RAM is initialized */
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void winbond_enable_serial(uint dev, uint iobase, uint irq)
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{
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pnp_enter_conf_state(dev);
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pnp_set_logical_device(dev);
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pnp_set_enable(dev, 0);
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pnp_set_iobase(dev, PNP_IDX_IO0, iobase);
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pnp_set_irq(dev, PNP_IDX_IRQ0, irq);
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pnp_set_enable(dev, 1);
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pnp_exit_conf_state(dev);
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}
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