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[POWERPC] Consolidate cuboot initialization code

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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>
This commit is contained in:
David Gibson 2007-06-13 14:53:00 +10:00 committed by Paul Mackerras
parent b2ba34f370
commit 85aecac8d2
6 changed files with 56 additions and 37 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

2
arch/powerpc/boot/Makefile
View file

@ -44,7 +44,7 @@ $(addprefix $(obj)/,$(zlib) gunzip_util.o main.o): \
src-wlib := string.S crt0.S stdio.c main.c flatdevtree.c flatdevtree_misc.c \
ns16550.c serial.c simple_alloc.c div64.S util.S \
gunzip_util.c elf_util.c $(zlib) devtree.c oflib.c ofconsole.c \
44x.c ebony.c mv64x60.c mpsc.c mv64x60_i2c.c
44x.c ebony.c mv64x60.c mpsc.c mv64x60_i2c.c cuboot.c
src-plat := of.c cuboot-83xx.c cuboot-85xx.c holly.c \
cuboot-ebony.c treeboot-ebony.c prpmc2800.c
src-boot := $(src-wlib) $(src-plat) empty.c

13
arch/powerpc/boot/cuboot-83xx.c
View file

@ -12,12 +12,12 @@
#include "ops.h"
#include "stdio.h"
#include "cuboot.h"
#define TARGET_83xx
#include "ppcboot.h"
static bd_t bd;
extern char _end[];
extern char _dtb_start[], _dtb_end[];
static void platform_fixups(void)
@ -52,16 +52,7 @@ static void platform_fixups(void)
void platform_init(unsigned long r3, unsigned long r4, unsigned long r5,
unsigned long r6, unsigned long r7)
{
unsigned long end_of_ram = bd.bi_memstart + bd.bi_memsize;
unsigned long avail_ram = end_of_ram - (unsigned long)_end;
memcpy(&bd, (bd_t *)r3, sizeof(bd));
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);
CUBOOT_INIT();
ft_init(_dtb_start, _dtb_end - _dtb_start, 32);
serial_console_init();
platform_ops.fixups = platform_fixups;

13
arch/powerpc/boot/cuboot-85xx.c
View file

@ -12,12 +12,12 @@
#include "ops.h"
#include "stdio.h"
#include "cuboot.h"
#define TARGET_85xx
#include "ppcboot.h"
static bd_t bd;
extern char _end[];
extern char _dtb_start[], _dtb_end[];
static void platform_fixups(void)
@ -53,16 +53,7 @@ static void platform_fixups(void)
void platform_init(unsigned long r3, unsigned long r4, unsigned long r5,
unsigned long r6, unsigned long r7)
{
unsigned long end_of_ram = bd.bi_memstart + bd.bi_memsize;
unsigned long avail_ram = end_of_ram - (unsigned long)_end;
memcpy(&bd, (bd_t *)r3, sizeof(bd));
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);
CUBOOT_INIT();
ft_init(_dtb_start, _dtb_end - _dtb_start, 32);
serial_console_init();
platform_ops.fixups = platform_fixups;

16
arch/powerpc/boot/cuboot-ebony.c
View file

@ -15,28 +15,16 @@
#include "ops.h"
#include "stdio.h"
#include "44x.h"
#include "cuboot.h"
#define TARGET_44x
#include "ppcboot.h"
static bd_t bd;
extern char _end[];
BSS_STACK(4096);
void platform_init(unsigned long r3, unsigned long r4, unsigned long r5,
unsigned long r6, unsigned long r7)
{
unsigned long end_of_ram = bd.bi_memstart + bd.bi_memsize;
unsigned long avail_ram = end_of_ram - (unsigned long)_end;
memcpy(&bd, (bd_t *)r3, sizeof(bd));
loader_info.initrd_addr = r4;
loader_info.initrd_size = r4 ? r5 : 0;
loader_info.cmdline = (char *)r6;
loader_info.cmdline_len = r7 - r6;
simple_alloc_init(_end, avail_ram, 32, 64);
CUBOOT_INIT();
ebony_init(&bd.bi_enetaddr, &bd.bi_enet1addr);
}

35
arch/powerpc/boot/cuboot.c Normal file
View file

@ -0,0 +1,35 @@
/*
* 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);
}

14
arch/powerpc/boot/cuboot.h Normal file
View file

@ -0,0 +1,14 @@
#ifndef _PPC_BOOT_CUBOOT_H_
#define _PPC_BOOT_CUBOOT_H_
void cuboot_init(unsigned long r4, unsigned long r5,
unsigned long r6, unsigned long r7,
unsigned long end_of_ram);
#define CUBOOT_INIT() \
do { \
memcpy(&bd, (bd_t *)r3, sizeof(bd)); \
cuboot_init(r4, r5, r6, r7, bd.bi_memstart + bd.bi_memsize); \
} while (0)
#endif /* _PPC_BOOT_CUBOOT_H_ */