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https://github.com/fail0verflow/switch-coreboot.git
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5a90884bd4
This is a potentially good pointer to where someone can take this. While startup was working, BSP now explodes once the AP stops, while BSP is doing startup IPI loop send #2. The code needs to be hardened; I think use of the shared variables would really make it much more solid. This would be a good undergrad student project if someone is looking for one. Signed-off-by: Ronald G. Minnich <rminnich@gmail.com> Acked-by: Stefan Reinauer <stepan@coresystems.de> git-svn-id: svn://coreboot.org/repository/coreboot-v3@1145 f3766cd6-281f-0410-b1cd-43a5c92072e9
61 lines
1.8 KiB
C
61 lines
1.8 KiB
C
/*
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* This file is part of the coreboot project.
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*
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* Copyright (C) 2007 coresystems GmbH
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* (Written by Stefan Reinauer <stepan@coresystems.de> for coresystems GmbH)
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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 as published by
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* the Free Software Foundation; version 2 of the License.
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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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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef LIB_H
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#define LIB_H
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#include <shared.h>
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/**
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* Return the size of a given array, no matter of which data type
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* the individual array elements are.
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*/
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#define ARRAY_SIZE(a) (sizeof(a) / sizeof((a)[0]))
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/* you have to explicity pick logc2 (ceiling) or log2f (floor)
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* it is a no-op if you KNOW that your number is a power of 2.
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* It is important to know what you are doing otherwise.
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* example: log2c(72) is 7, log2f(72) is 6!
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*/
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int log2c(unsigned int n);
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int log2f(unsigned int n);
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void udelay(unsigned int usecs);
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void mdelay(unsigned int msecs);
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void delay(unsigned int secs);
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/* all architectures must implement a 64-bit time counter
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* that is compiled into stage1
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* rdtsc is usually fine.
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*/
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u64 cycles(void);
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void beep_short(void);
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void beep_long(void);
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/* Optional ramtest. */
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int ram_check(unsigned long start, unsigned long stop);
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/* required: a way to tell if this is a:
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* power-on/reset (coldboot) OR
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* coreboot has initiated a reset (warmboot).
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*/
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int is_coldboot(void);
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#endif /* LIB_H */
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