diff options
author | Jeff Garzik <jgarzik@pobox.com> | 2005-11-09 01:07:12 -0500 |
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committer | Jeff Garzik <jgarzik@pobox.com> | 2005-11-09 01:07:12 -0500 |
commit | a892acacd3a8546ac161526522f13b5174f2c471 (patch) | |
tree | ee6d36f27f1388989ebfcabf90253fb7194112ac /arch/powerpc/kernel/setup-common.c | |
parent | 193515d51ccb363165d6b09e9ba5c21089e34bad (diff) | |
parent | 330d57fb98a916fa8e1363846540dd420e99499a (diff) |
Merge branch 'master'
Diffstat (limited to 'arch/powerpc/kernel/setup-common.c')
-rw-r--r-- | arch/powerpc/kernel/setup-common.c | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/arch/powerpc/kernel/setup-common.c b/arch/powerpc/kernel/setup-common.c index d43fa8c0e5ac..e22856ecb5a0 100644 --- a/arch/powerpc/kernel/setup-common.c +++ b/arch/powerpc/kernel/setup-common.c @@ -405,6 +405,46 @@ static int __init set_preferred_console(void) console_initcall(set_preferred_console); #endif /* CONFIG_PPC_MULTIPLATFORM */ +void __init check_for_initrd(void) +{ +#ifdef CONFIG_BLK_DEV_INITRD + unsigned long *prop; + + DBG(" -> check_for_initrd()\n"); + + if (of_chosen) { + prop = (unsigned long *)get_property(of_chosen, + "linux,initrd-start", NULL); + if (prop != NULL) { + initrd_start = (unsigned long)__va(*prop); + prop = (unsigned long *)get_property(of_chosen, + "linux,initrd-end", NULL); + if (prop != NULL) { + initrd_end = (unsigned long)__va(*prop); + initrd_below_start_ok = 1; + } else + initrd_start = 0; + } + } + + /* If we were passed an initrd, set the ROOT_DEV properly if the values + * look sensible. If not, clear initrd reference. + */ + if (initrd_start >= KERNELBASE && initrd_end >= KERNELBASE && + initrd_end > initrd_start) + ROOT_DEV = Root_RAM0; + else { + printk("Bogus initrd %08lx %08lx\n", initrd_start, initrd_end); + initrd_start = initrd_end = 0; + } + + if (initrd_start) + printk("Found initrd at 0x%lx:0x%lx\n", initrd_start, initrd_end); + + DBG(" <- check_for_initrd()\n"); +#endif /* CONFIG_BLK_DEV_INITRD */ +} + #ifdef CONFIG_SMP /** |