forked from Minki/linux
309257484c
The udbg_16550 code, which we use for our early consoles and debug backends was fairly messy. Especially for the debug consoles, it would re-implement the "high level" getc/putc/poll functions for each access method. It also had code to configure the UART but only for the straight MMIO method. This changes it to instead abstract at the register accessor level, and have the various functions and configuration routines use these. The result is simpler and slightly smaller code, and free support for non-MMIO mapped PIO UARTs, which such as the ones that can be present on a POWER 8 LPC bus. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
64 lines
2.2 KiB
C
64 lines
2.2 KiB
C
/*
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* (c) 2001, 2006 IBM Corporation.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*/
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#ifndef _ASM_POWERPC_UDBG_H
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#define _ASM_POWERPC_UDBG_H
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#ifdef __KERNEL__
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#include <linux/compiler.h>
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#include <linux/init.h>
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extern void (*udbg_putc)(char c);
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extern void (*udbg_flush)(void);
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extern int (*udbg_getc)(void);
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extern int (*udbg_getc_poll)(void);
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extern void udbg_puts(const char *s);
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extern int udbg_write(const char *s, int n);
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extern void register_early_udbg_console(void);
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extern void udbg_printf(const char *fmt, ...)
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__attribute__ ((format (printf, 1, 2)));
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extern void udbg_progress(char *s, unsigned short hex);
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extern void udbg_uart_init_mmio(void __iomem *addr, unsigned int stride);
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extern void udbg_uart_init_pio(unsigned long port, unsigned int stride);
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extern void udbg_uart_setup(unsigned int speed, unsigned int clock);
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extern unsigned int udbg_probe_uart_speed(unsigned int clock);
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struct device_node;
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extern void udbg_scc_init(int force_scc);
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extern int udbg_adb_init(int force_btext);
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extern void udbg_adb_init_early(void);
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extern void __init udbg_early_init(void);
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extern void __init udbg_init_debug_lpar(void);
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extern void __init udbg_init_debug_lpar_hvsi(void);
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extern void __init udbg_init_pmac_realmode(void);
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extern void __init udbg_init_maple_realmode(void);
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extern void __init udbg_init_pas_realmode(void);
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extern void __init udbg_init_rtas_panel(void);
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extern void __init udbg_init_rtas_console(void);
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extern void __init udbg_init_debug_beat(void);
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extern void __init udbg_init_btext(void);
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extern void __init udbg_init_44x_as1(void);
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extern void __init udbg_init_40x_realmode(void);
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extern void __init udbg_init_cpm(void);
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extern void __init udbg_init_usbgecko(void);
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extern void __init udbg_init_wsp(void);
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extern void __init udbg_init_memcons(void);
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extern void __init udbg_init_ehv_bc(void);
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extern void __init udbg_init_ps3gelic(void);
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extern void __init udbg_init_debug_opal_raw(void);
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extern void __init udbg_init_debug_opal_hvsi(void);
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#endif /* __KERNEL__ */
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#endif /* _ASM_POWERPC_UDBG_H */
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