mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-22 20:23:57 +08:00
2f1d489932
Most of these were previously used by numerous C files and redeclared in each one. Signed-off-by: Scott Wood <scottwood@freescale.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
84 lines
1.9 KiB
C
84 lines
1.9 KiB
C
/*
|
|
* Copyright (C) Paul Mackerras 1997.
|
|
*
|
|
* 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; either version
|
|
* 2 of the License, or (at your option) any later version.
|
|
*/
|
|
#include <stdarg.h>
|
|
#include <stddef.h>
|
|
#include "types.h"
|
|
#include "elf.h"
|
|
#include "string.h"
|
|
#include "stdio.h"
|
|
#include "page.h"
|
|
#include "ops.h"
|
|
|
|
#include "of.h"
|
|
|
|
/* Value picked to match that used by yaboot */
|
|
#define PROG_START 0x01400000 /* only used on 64-bit systems */
|
|
#define RAM_END (512<<20) /* Fixme: use OF */
|
|
#define ONE_MB 0x100000
|
|
|
|
|
|
|
|
static unsigned long claim_base;
|
|
|
|
static void *of_try_claim(unsigned long size)
|
|
{
|
|
unsigned long addr = 0;
|
|
|
|
if (claim_base == 0)
|
|
claim_base = _ALIGN_UP((unsigned long)_end, ONE_MB);
|
|
|
|
for(; claim_base < RAM_END; claim_base += ONE_MB) {
|
|
#ifdef DEBUG
|
|
printf(" trying: 0x%08lx\n\r", claim_base);
|
|
#endif
|
|
addr = (unsigned long)of_claim(claim_base, size, 0);
|
|
if ((void *)addr != (void *)-1)
|
|
break;
|
|
}
|
|
if (addr == 0)
|
|
return NULL;
|
|
claim_base = PAGE_ALIGN(claim_base + size);
|
|
return (void *)addr;
|
|
}
|
|
|
|
static void of_image_hdr(const void *hdr)
|
|
{
|
|
const Elf64_Ehdr *elf64 = hdr;
|
|
|
|
if (elf64->e_ident[EI_CLASS] == ELFCLASS64) {
|
|
/*
|
|
* Maintain a "magic" minimum address. This keeps some older
|
|
* firmware platforms running.
|
|
*/
|
|
if (claim_base < PROG_START)
|
|
claim_base = PROG_START;
|
|
}
|
|
}
|
|
|
|
void platform_init(unsigned long a1, unsigned long a2, void *promptr)
|
|
{
|
|
platform_ops.image_hdr = of_image_hdr;
|
|
platform_ops.malloc = of_try_claim;
|
|
platform_ops.exit = of_exit;
|
|
platform_ops.vmlinux_alloc = of_vmlinux_alloc;
|
|
|
|
dt_ops.finddevice = of_finddevice;
|
|
dt_ops.getprop = of_getprop;
|
|
dt_ops.setprop = of_setprop;
|
|
|
|
of_console_init();
|
|
|
|
of_init(promptr);
|
|
loader_info.promptr = promptr;
|
|
if (a1 && a2 && a2 != 0xdeadbeef) {
|
|
loader_info.initrd_addr = a1;
|
|
loader_info.initrd_size = a2;
|
|
}
|
|
}
|