From 85aecac8d2893372c618bac373e2de9cf102dfbc Mon Sep 17 00:00:00 2001 From: David Gibson Date: Wed, 13 Jun 2007 14:53:00 +1000 Subject: [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 Signed-off-by: Paul Mackerras --- arch/powerpc/boot/cuboot.c | 35 +++++++++++++++++++++++++++++++++++ 1 file changed, 35 insertions(+) create mode 100644 arch/powerpc/boot/cuboot.c (limited to 'arch/powerpc/boot/cuboot.c') diff --git a/arch/powerpc/boot/cuboot.c b/arch/powerpc/boot/cuboot.c new file mode 100644 index 000000000000..65795468ad6f --- /dev/null +++ b/arch/powerpc/boot/cuboot.c @@ -0,0 +1,35 @@ +/* + * Compatibility for old (not device tree aware) U-Boot versions + * + * Author: Scott Wood + * Consolidated using macros by David Gibson + * + * 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); +} -- cgit