mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-13 09:36:51 +07:00
4d033556f1
Intel Medfield platform has a high speed UART device, which could act as a early console. To enable early printk of HSU console, simply add "earlyprintk=hsu" in kernel command line. Currently we put the code in the early_printk_mrst.c as it is also for Intel MID platforms like the mrst early console Signed-off-by: Feng Tang <feng.tang@intel.com> Acked-by: Alan Cox <alan@linux.intel.com> Cc: greg@kroah.com LKML-Reference: <1284361736-23011-5-git-send-email-feng.tang@intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
54 lines
1.4 KiB
C
54 lines
1.4 KiB
C
/*
|
|
* mrst.h: Intel Moorestown platform specific setup code
|
|
*
|
|
* (C) Copyright 2009 Intel Corporation
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License
|
|
* as published by the Free Software Foundation; version 2
|
|
* of the License.
|
|
*/
|
|
#ifndef _ASM_X86_MRST_H
|
|
#define _ASM_X86_MRST_H
|
|
|
|
#include <linux/sfi.h>
|
|
|
|
extern int pci_mrst_init(void);
|
|
int __init sfi_parse_mrtc(struct sfi_table_header *table);
|
|
|
|
/*
|
|
* Medfield is the follow-up of Moorestown, it combines two chip solution into
|
|
* one. Other than that it also added always-on and constant tsc and lapic
|
|
* timers. Medfield is the platform name, and the chip name is called Penwell
|
|
* we treat Medfield/Penwell as a variant of Moorestown. Penwell can be
|
|
* identified via MSRs.
|
|
*/
|
|
enum mrst_cpu_type {
|
|
MRST_CPU_CHIP_LINCROFT = 1,
|
|
MRST_CPU_CHIP_PENWELL,
|
|
};
|
|
|
|
extern enum mrst_cpu_type __mrst_cpu_chip;
|
|
static inline enum mrst_cpu_type mrst_identify_cpu(void)
|
|
{
|
|
return __mrst_cpu_chip;
|
|
}
|
|
|
|
enum mrst_timer_options {
|
|
MRST_TIMER_DEFAULT,
|
|
MRST_TIMER_APBT_ONLY,
|
|
MRST_TIMER_LAPIC_APBT,
|
|
};
|
|
|
|
extern enum mrst_timer_options mrst_timer_options;
|
|
|
|
#define SFI_MTMR_MAX_NUM 8
|
|
#define SFI_MRTC_MAX 8
|
|
|
|
extern struct console early_mrst_console;
|
|
extern void mrst_early_console_init(void);
|
|
|
|
extern struct console early_hsu_console;
|
|
extern void hsu_early_console_init(void);
|
|
#endif /* _ASM_X86_MRST_H */
|