kernel-ark/arch/powerpc/boot/cuboot.c
David Gibson 85aecac8d2 [POWERPC] Consolidate cuboot initialization code
The various cuboot platforms (i.e. pre-device tree aware u-boot for
83xx, 85xx and Ebony) share a certain amount of code for parsing the
boot parameters.  To a certain extent that's inevitable, since they
platforms have different definitions of the bd_t structure.  However,
with some macro work and a helper function, this patch improves the
situation a bit.

In the process, this fixes a bug on Ebony, which was incorrectly
handling the parameters passed form u-boot for the command line (the
bug was copied from 83xx and 85xx which have subsequently been fixed).

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-06-14 22:30:16 +10:00

36 lines
1003 B
C

/*
* Compatibility for old (not device tree aware) U-Boot versions
*
* Author: Scott Wood <scottwood@freescale.com>
* Consolidated using macros by David Gibson <david@gibson.dropbear.id.au>
*
* Copyright 2007 David Gibson, IBM Corporation.
* Copyright (c) 2007 Freescale Semiconductor, Inc.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 as published
* by the Free Software Foundation.
*/
#include "ops.h"
#include "stdio.h"
#include "ppcboot.h"
extern char _end[];
extern char _dtb_start[], _dtb_end[];
void cuboot_init(unsigned long r4, unsigned long r5,
unsigned long r6, unsigned long r7,
unsigned long end_of_ram)
{
unsigned long avail_ram = end_of_ram - (unsigned long)_end;
loader_info.initrd_addr = r4;
loader_info.initrd_size = r4 ? r5 - r4 : 0;
loader_info.cmdline = (char *)r6;
loader_info.cmdline_len = r7 - r6;
simple_alloc_init(_end, avail_ram - 1024*1024, 32, 64);
}