mirror of
https://github.com/AsahiLinux/u-boot
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51de94dfe4
At present the debug UART is only set up in SPL, on the assumption that the boot flow will always pass through there. When booting from coreboot, SPL is not used, so the debug UART is not available. Move the code into a common place so that it can be used in U-Boot proper also. Add the required init to start_from_spl.S as well. Signed-off-by: Simon Glass <sjg@chromium.org>
38 lines
1 KiB
C
38 lines
1 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Copyright 2019 Google LLC
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*/
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#ifndef _ASM_ARCH_UART_H
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#define _ASM_ARCH_UART_H
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#include <dt-structs.h>
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#include <ns16550.h>
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/**
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* struct apl_ns16550_plat - platform data for the APL UART
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*
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* Note that when of-platdata is in use, apl_ns16550_of_to_plat() actually
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* copies the ns16550_plat contents to the start of this struct, meaning that
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* dtplat is no-longer valid. This is done so that the ns16550 driver can use
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* dev_get_plat() without any offsets or adjustments.
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*/
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struct apl_ns16550_plat {
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#if CONFIG_IS_ENABLED(OF_PLATDATA)
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struct dtd_intel_apl_ns16550 dtplat;
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#endif
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struct ns16550_plat ns16550;
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};
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/**
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* apl_uart_init() - Set up the APL UART device and clock
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*
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* This enables the PCI device, sets up the MMIO region and turns on the clock
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* using LPSS.
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*
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* The UART won't actually work unless the GPIO settings are correct and the
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* signals actually exit the SoC. See board_debug_uart_init() for that.
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*/
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void apl_uart_init(pci_dev_t bdf, ulong base);
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#endif
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