diff options
author | David Gibson <david@gibson.dropbear.id.au> | 2007-06-13 04:53:00 (GMT) |
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committer | Paul Mackerras <paulus@samba.org> | 2007-06-14 12:30:16 (GMT) |
commit | 85aecac8d2893372c618bac373e2de9cf102dfbc (patch) | |
tree | 7684b8b8818bc5ee420f9e30cce164da28b29260 /arch/powerpc/boot/cuboot.c | |
parent | b2ba34f370a66d9ed4bbd440e45296ecf3e267d3 (diff) | |
download | linux-fsl-qoriq-85aecac8d2893372c618bac373e2de9cf102dfbc.tar.xz |
[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>
Diffstat (limited to 'arch/powerpc/boot/cuboot.c')
-rw-r--r-- | arch/powerpc/boot/cuboot.c | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/arch/powerpc/boot/cuboot.c b/arch/powerpc/boot/cuboot.c new file mode 100644 index 0000000..6579546 --- /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 <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); +} |