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x86: flatten hierarchy

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It never made sense to have bootblock_* in init, but
pirq_routing.c in boot, and some ld scripts on the main
level while others live in subdirectories.

This patch flattens the directory hierarchy and makes
x86 more similar to the other architectures.

Change-Id: I4056038fe7813e4d3d3042c441e7ab6076a36384
Signed-off-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Reviewed-on: http://review.coreboot.org/10901
Tested-by: build bot (Jenkins)
Tested-by: Raptor Engineering Automated Test Stand <noreply@raptorengineeringinc.com>
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
This commit is contained in:
Stefan Reinauer
2015-07-13 09:39:15 +02:00
parent 9693885ad8
commit 6cb3a59fd5
48 changed files with 77 additions and 94 deletions
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65
src/arch/x86/thread.c Normal file
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@ -0,0 +1,65 @@
/*
* This file is part of the coreboot project.
*
* Copyright (C) 2013 Google, Inc.
*
* 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.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc.
*/
#include <thread.h>
/* The stack frame looks like the following after a pushad instruction. */
struct pushad_regs {
uint32_t edi; /* Offset 0x00 */
uint32_t esi; /* Offset 0x04 */
uint32_t ebp; /* Offset 0x08 */
uint32_t esp; /* Offset 0x0c */
uint32_t ebx; /* Offset 0x10 */
uint32_t edx; /* Offset 0x14 */
uint32_t ecx; /* Offset 0x18 */
uint32_t eax; /* Offset 0x1c */
};
static inline uintptr_t push_stack(uintptr_t cur_stack, uintptr_t value)
{
uintptr_t *addr;
cur_stack -= sizeof(value);
addr = (uintptr_t *)cur_stack;
*addr = value;
return cur_stack;
}
void arch_prepare_thread(struct thread *t,
void asmlinkage (*thread_entry)(void *), void *arg)
{
uintptr_t stack = t->stack_current;
/* Imitate thread_entry(t) with return address of 0. thread_entry()
* is assumed to never return. */
stack = push_stack(stack, (uintptr_t)arg);
stack = push_stack(stack, (uintptr_t)0);
stack = push_stack(stack, (uintptr_t)thread_entry);
/* Make room for the registers. Ignore intial values. */
stack -= sizeof(struct pushad_regs);
t->stack_current = stack;
}
void *arch_get_thread_stackbase(void)
{
/* defined in c_start.S */
extern u8 thread_stacks[];
return &thread_stacks[0];
}