UML specific code for working with iomem 'devices'. UML is handy for testing. Signed-off-by: Jared Hulbert <jaredeh@xxxxxxxxx> --- diff --git a/fs/axfs/axfs_uml.c b/fs/axfs/axfs_uml.c new file mode 100644 index 0000000..7d479a0 --- /dev/null +++ b/fs/axfs/axfs_uml.c @@ -0,0 +1,47 @@ +/* + * Advanced XIP File System for Linux - AXFS + * Readonly, compressed, and XIP filesystem for Linux systems big and small + * + * Copyright(c) 2008 Numonyx + * + * This program is free software; you can redistribute it and/or modify it + * under the terms and conditions of the GNU General Public License, + * version 2, as published by the Free Software Foundation. + * + * Authors: + * Jared Hulbert <jaredeh@xxxxxxxxx> + * + * Project url: http://axfs.sourceforge.net + * + * axfs_uml.c - + * Allows axfs to a UML kernels find_iomem() interface as an XIP device or + * dummy functions if this is not a UML build. + */ + +#include <linux/axfs.h> +#ifdef CONFIG_UML +#include <mem_user.h> +int axfs_get_uml_address(char *iomem, unsigned long *address, + unsigned long *length) +{ + *address = find_iomem(iomem, length); + if (!(*address)) { + printk(KERN_DEBUG "axfs: find_iomem() failed\n"); + return -EINVAL; + } + + if (*length < PAGE_SIZE) { + printk(KERN_DEBUG + "axfs: iomem() too small, must be at least %li Bytes\n", + PAGE_SIZE); + return -EINVAL; + } + return 0; +} +#else +int axfs_get_uml_address(char *iomem, unsigned long *address, + unsigned long *length) +{ + return 0; +} +#endif /* CONFIG_UML */ -- To unsubscribe from this list: send the line "unsubscribe linux-embedded" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
